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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.423 by edhill, Mon Dec 20 17:10:27 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o fix MNC coordinate variables so that they now contain per-face index
7      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
8      general, EXCH2 grids are only aligned to a "local" coordinate system
9    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
10    o Implement instantaneous output within pkg diagnostics:
11      setting a negative frequency in data.diagnostics produces
12     "snap-shot" output (as opposed to time-average if freq > 0)
13    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
14      NOTE: change ptracer diagnostics name: use 2 characters to work with
15            more than 9 tracers. Add also diagnostics of advect & diffus flux.
16    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
17      becomes the coordinate variable for the 'T' dimension
18    o add CF-style coordinate variables to MNC
19      - just a first cut:  numbers are meaningless on the cubesphere and
20        missing along the T axis but otherwise it works!
21    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
22    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
23    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
24      this is based directly on what the model compute, so that the content of
25      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
26    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
27    o clean up build options files for SunOS, in particular
28      - remove -traditional from xmakedepend
29      - change -xarch=v9 to -xarch=native for f77
30      - restore use of make (not gmake)
31      - add CC=gcc if using g77
32    o changes per discussion of AM, JMC, & EH3 today:
33      - move redundant "grid" variables out of "state" -- in preparation of
34        creating proper CF-style coordinate variables and in recognition
35        that any/all grid variables can be easily copied (eg. w/NCO) from
36        the grid files into any of the other NetCDF files
37      - *always* output grid variables with MDSIO (this will eventually be
38        changed)
39      - output MNC grid file if useMNC is true
40    o every instance of _END_MASTER() has been found and replaced with
41      _END_MASTER( myThid ) in order to satisfy certain picky Sun
42      preprocessors
43    o re-arrange diagnostics pkg initialisation:
44     - allow each package to extend the available diagnostics list
45     - add some checking and fix small problems (multi-threaded, ...)
46     - new S/R diagnostics_fill (replace fill_diagnostics):
47       look through the short list of active diag. (instead of the long list)
48       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
49    
50    checkpoint57a_post
51    o this set of changes restores TAMC compatibility
52      tested for global_ocean.90x40x15 adjoint on trough
53      (what a pain)
54    
55    checkpoint57a_pre
56    o some modifs in tools/build_options for sunos
57    o call ctrl_pack for ctrl at end for optimcycle=0
58    
59    checkpoint57
60    o add horizontal bi-harmonic viscosity for vertical velocity
61      - new parameter viscA4W (defaults to viscA4)
62      - affects only non-hydrostatic code
63      - to be done: no-slip lateral boundary conditions
64    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
65    o implement Implicit Vertical advection for pTracers
66    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
67      (implemented also for implicit vertical diffusion & advection)
68    o OBCS: extend application of tracer open boundary conditions
69      to a strip beyond the boundary of width Olx/Oly
70    o add call monitor to TAF set of required calls (flow directives)
71      and include in natl_box_adjoint
72    o untangle a few ifdefs related to cost, ctrl, autodiff
73      untangel a few ALLOW_ECCO_OPTIMIZATION
74    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
75      (theta2, salt2 in ecco_cost_weights)
76    
77    checkpoint56c_post
78    o OBCS as control variables
79      - update ctrl_ad_diff.list, obcs_ad_diff.list
80      - remove balance of obcs controls from default
81      - fix index bug nobcs in ctrl_init
82      - fix dummy fields filen in ctrl_pack
83      - add dummy weights for obcs
84    o lsopt: comment out fort.94 output
85    o optim:
86      - remove unnecessary header files
87      - adjusted namelists
88      - add xerbla.F to Makefile
89    o exf:
90      - multiple modifications of exf_check_range
91      - unit change in exf_init_runoff from [m/year] to [m/s]
92    o mdsio:
93      - i/o-vector change debugLevel from debLevA to debLevB
94    
95    checkpoint56b_post
96    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
97      is called from DO_THE_MODEL_IO
98      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
99      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
100      - clean up PTRACERS_WRITE_TIMEAVE a little
101    o add another verification experiment that tests both the cfc-pkg and
102      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
103      reactive tendencies treated inline with regular timestepping
104    o testreport previously did a lousy job of comparing small numbers, so
105      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
106      implemented in the little c-progam tmp_cmpnum.c which is embedded in
107      testreport.
108    o ptracers_monitor: bug fix for MPI
109    
110    checkpoint56a_post
111    o GCHEM: finish reorganizating the package
112      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
113        (introduces another 3D-array for each passive tracer, but only if
114        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
115        gchemTendency is not needed because the timestep is done separately)
116      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
117      - GCHEM is now---more or less cleanly---separate from PTRACERS
118      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
119        so clear to me how that should be done in a general way.
120    o CFC: improve formatting of output in CFC_ATMOS
121    o PTRACERS:
122      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
123        that ALL experiments with ptracers enable can be checked. This makes
124        GCHEM_MONITOR obsolete.
125      - include a runtime parameter PTRACERS_monitorFreq that defaults to
126        monitorFreq
127      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
128    o add PTRACERS (PTR0[1-5]) to testreport output
129    o exf_check_range:
130      * default changed to .TRUE.
131      * will check values for niter0 if debLevA, every timestep if debLevB
132      * STOP in exf_check_range if 'out of range'
133      * range chosen generous to allow for potential extema
134      TBD: a version with stricter range
135           permitted range would be runtime parameters
136    o GMredi:
137      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
138      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
139      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
140    o GCHEM:
141      - move call to GCHEM_FORCING_SEP, so that it is now called before
142        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
143      - introduced a useGCHEM runtime flag and applied it everywhere.
144      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
145        this flag is now only visible within GCHEM-pkg routines.
146      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
147        be replaced by a 3D array that is computed before thermodynamics; for
148        this, the tracer ID iTracer had to be included into the parameter list
149        of ptracers_forcing
150      - set up forward_step to call gchem_forcing, that will replace
151        gchem_forcing_int in ptracers_forcing
152      - cleaning up
153    o small cleaning of exch2: remove files that are also in eesupp/src
154    
155    checkpoint56
156    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
157    o mnc: cleanup "full" files--fixes out-of-memory problem
158    o ECCO-GODAE
159      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
160      * fully merged and updated from SIO code
161        windstress sign change affects
162        - exf_inscal_[u/v]stress
163        - sign of xx_tau[u/v] adjustments
164        - signs in cost_scat
165      * ctrl_get_gen: avoid update of tau[u/v] for first few days
166      * natl_box_adjoint updated and compressed
167      * 2-level checkpoint switch added
168        (tested in EXP. 1 of natl_box_adjoint)
169      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
170    o SVD
171      * first complete, non-hacked version for SVD calculations
172      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
173        performed via direct access files admtlm_vector.it????
174        (via ctrl_[un]pack)
175      * optimcycle is used for ARPACK iteration counter
176        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
177      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
178        and add linear transforms where necessary
179      * controls are initial/final SST, SSS (can be extended; need to check
180        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
181    o mdsio: filename info to both stderr, stdout
182    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
183      from sign change
184    
185    checkpoint55j_post
186    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
187      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
188    o add consistent build directories and .cvsignore files to verification
189    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
190    o make all subroutines 30 or less characters in length for certain older
191      compilers to work (a thorough search only turns up two routines in
192      pkg/ptracers)
193    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
194      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
195    
196    checkpoint55i_post
197    o change arrays for total vertical diffusivity (2.D if explicit,
198      3.D if implicit) ; each ptracer uses its own background value.
199    o added mnc/NetCDF output capability to ocn_compon_interf
200      - added bits to verification/cpl_aim+ocn so that it can run on
201        ITRDA and other clusters without the mpirun "-wd" option
202    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
203      configuration
204    o give MNC the ability to create additional files rather than
205      exceeding a specified file size limit "MNC_MAX_FILESIZE"
206      - the default is just less than 2GB which is a practical limit
207        on many systems
208    o Compute the non-local term using either KPP vertical diffusivity (=default)
209       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
210    
211    checkpoint55h_post
212    o add verification test "vermix"
213    o remove all the *_ioinc flags and replace with the single global
214      outputTypesInclusive flag
215    o allow to set a vertical profile of vertical diffusivity for T & S
216    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
217    o useMNC moved from data.mnc to data.pkg
218    
219    checkpoint55g_post
220    o Renaming carbon AD experiments to comply with testreport conventions
221    o Updating adjoint of Held-Suarez hs94.1x64x5
222    o Fixing directives for non-ECCO forward_step, after ECCO directives
223      have been fixed to avoid recomp. of do_oceanic_phys
224      Works well for global_ocean.90x40x15,
225      but recomp. issue remains for carbon
226    o Updating adjoint output for natl_box_adjoint after
227      pkg/ecco has been modified (see taga c55d_post)
228    
229    checkpoint55f_post
230    o rename to timeave_init_fixed
231    
232    checkpoint55e_post
233    o some delicate re-shuffle of store directives to avoid one
234      extra call of do_oceanic_physics
235      affects ecco_the_main_loop.F, do_oceanic_physics.F
236      checkpoint_lev1_directives.h
237    o NB: this may break global_ocean adjoint temporarily,
238      but it is clear how to fix it. Will do later, need this now.
239    
240    checkpoint55d_post
241    o ECCO specific cost function terms (up-to-date with 1x1 runs)
242    o ecco_cost_weights is modified to 1x1 runs
243    o modifs to allow observations to be read in as
244      single file or yearly files
245    o enable to read exf forcing fields as either
246      single file or yearly files (flag useExfYearlyFields)
247    checkpoint55d_pre
248    
249    o switch between 2-level and 3-level checkpointing
250    o add ability of MNC to write local and "partial" (eg. 2D slices where
251      the full 3D field is never actually stored) arrays to NetCDF files
252      with the correct (that is, the complete multi-dimensional) set of
253      array indicies
254      - used in mom_vecinv() to write the diagFreq output
255      - tested (demonstrated) in verification/aim.5l_cs
256    o further mnc-ification
257      - add verification/lab_sea to the list with mnc setups
258      - fix undefined mnc v-names in cd_code
259      - add kpp to mnc output (both snapshot and timeave)
260    o non-hydrostatic code
261      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
262        in calc_gw.F
263      - defaults to viscAh
264      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
265        friction or Leith) in non-hydrostatic mode, as long as there is
266        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
267    o pkg/cost
268      extend simple cost functions to treat time mean quantities
269      (T,U,V) via cost_accumulate_state from cost_tile
270    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
271        be 2 times larger than the minimum size the advection scheme requires.
272        now get a perfect conservation of salt in advect_cs test-exp (updated)
273    o GGL90 (Gaspar's TKE mixed layer)
274      - add horizontal diffusion of TKE, requires exchanges in
275        do_fields_blocking_exchanges, horizontal diffusivity is zero by
276        default. In OPA there is no horizontal diffusion of TKE but the
277        mixing coefficients are computed from a horizontal average of TKE of
278        6 points or so. I think that diffusion has a little more physical
279        justification.
280      - clean up ggl90_calc in the hope of reducing memory usage (this hope
281        was in vain)
282      - mask tke-variable in ggl90_init
283    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
284    o fix biharmonic diffusion on CS-grid.
285    o more obcs stuff
286      - added obcs_external_fields_load as an alternative to the EXF-pkg option
287        for reading boundary values. This routine is called from
288        obcs_prescribe_read
289      - updated obcs_check
290      - changed sponge layer relaxation parameter units for days to seconds
291      - turned off sponge layer by default
292      - changed argument list of OBCS_CALC to myTime+deltaTclock
293      - fixed about 35 bugs in obcs_external_fields_load
294    
295    checkpoint55c_post
296    o obcs stuff
297      - new runtime flags useOBCSprescribe, useOBCSbalance
298      - re-arranged obcs_calc
299      - moved exf_getobcs to obcs_prescibe_read
300        obcs_prescibe_read is called after ORLANSKI stuff
301        and independent of it (executable can contain all).
302      - updated obcs_check
303      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
304        These may be necessary only if tangential velocities are
305        prescribed at OB, not sure, needs testing.
306    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
307      which simplifies the calls and passes the ifc check-bounds test
308    
309    checkpoint55b_post
310    o add a 2D scalar, Z location, exchange_2 routine.
311    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
312      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
313      affects advect_cs results (for the wrong reason): update output.txt
314    o use a more standard discretization for biharmonic viscosity ;
315     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
316      affects results of dome set-up: update output.txt
317    o fix gad_advection.F (CubedSphere part), back to version 1.23
318    o fix bug in mom_vi_del2uv.F (CubedSphere part).
319    
320    checkpoint55a_post
321    o merged code to
322      * prescribe/read time-dependent open boundaries
323        (works in conjunction with exf, cal)
324      * sponge layer code for open boundaries
325      * each boundary N/S/E/W now has its own CPP option
326        (healthy for the adjoint)
327    
328    checkpoint55
329    o up-to-date adjoint of previous breaks
330      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
331      - global_ocean_ebm: adjoint still needs fix (TLM ok)
332      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
333      - carbon: * remove tr1-related adjoint verification
334                * add ptracer as control variable
335    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
336      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
337    
338    checkpoint54f_post
339    o in verification/carbin/ remove experiment related to
340      ALLOW_PASSIVE_TRACER (array tr1 etc)
341      code_ad/ input_ad/ results_ad
342    
343    o add two new packages
344      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
345        + subject to optimization (memory)
346      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
347        + subject to reordering (many GOTOs in the original code)
348        + so far opps is called for every (i,j) point, and then operates in
349          the vertical; one may want to reorder the scheme in order operate in
350          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
351          fields)
352    o overhaul of IO so that we now have flags for MDSIO and/or MNC
353      - all verification tests compile and run with linux_ia32_g77
354      - defaults are compatible with current input files--nothing
355        should change if you were not previously using MNC
356      - MNC output has been added in numerous places (eg. timeave)
357        but there are still a few writes not yet do-able with MNC
358        (this is in progress)
359      - flags now allow for either/or/both use of MDSIO and MNC and
360        documentation will soon follow
361      - numerous small formatting cleanups for ProTeX
362    o add version info (via BUILD_INFO.h) to MNC and stdout
363    
364    checkpoint54e_post
365    o add two new packages
366      - pp81 (Packanowski and Philander, 1981), Richardson number and
367        stratification dependent mixing
368      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
369      - these scheme operate in a similar manner as KPP (without ghat, of
370        course), however there is only one diffusivity that is used for both
371        temperature and salinity (and passive tracers)ç
372    o add offline package
373    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
374      provided by Stephanie Dutkiewicz
375    o genmake2: add ability to search for C compilers and cleanup test output
376      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
377    
378    checkpoint54d_post
379    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
380    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
381      leading to additional shift by 5 days each year of integration
382       (i.e. leading to considerable offset over the years)
383    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
384    o start with no AB and no initial filtering (staggerTimeStep):
385      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
386    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
387      (external loading & cpl import/export stay in forward_step.F)
388    o update coupling interface to work with new staggerTimeStep
389    o change MDSIO ptracers_pickup.
390    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
391    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
392    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
393    
394    checkpoint54c_post
395    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
396      this affects (truncation error) output.txt of test-exp:
397       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
398    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
399    o change Qnet to always be the net heat flux, (+upward).
400      affects (truncation error) output of natl_box exp.: updated
401    o define the max number of passive tracers in PTRACERS_SIZE.h
402    o start to test mnc routinely in exp0
403    o add sea-ice loading (sIceLoad) as a new forcing field.
404    
405    checkpoint54b_post
406    o add testreport "-j JOBS" option for parallel builds (tested and pretty
407       impressive on Altix and Opteron systems)
408    o diagnostics can now write NetCDF files through the mnc package
409    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
410    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
411    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
412      affects (truncation error) output of lab_sea & natl_box exp.: updated
413    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
414    
415    checkpoint54a_post
416    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
417    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
418    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
419    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
420      + internal_wave (shift in writing cg2d_ini_res)
421    checkpoint54a_pre
422    
423    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
424      - modified verification/lab_sea and natl_box_adjoint accordingly
425    
426    checkpoint54
427    checkpoint53g_post
428    o prepare splitting of thermodynamics: store convect.counter in common block
429    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
430      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
431    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
432    o new parameter "nShapS": allow to treat differently S from T (nShapT)
433    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
434    o restore adjointability
435    
436    checkpoint53f_post
437    o modifications that affect AIM experiment results (update output.txt):
438      - no advection of S at top interface Nr (pkg/generic_advdiff)
439      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
440    o AIM pkg:
441      - include stability function into surf.Flux derivative relative to Tsurf
442      - calculate clear-sky radiation & surface temp. change (for diagnostics)
443    
444    checkpoint53e_post
445    o merged cylindrical coord configuration
446    o added rotating_tank experiment
447    checkpoint53e_pre
448    
449    checkpoint53d_post
450    o faulks upgraded: re-generate output.txt that have changed:
451       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
452    o Added Bryan and Lewis, 1979, vertical diffusivity profile
453    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
454    o added Sadourny discretization of Coriolis
455      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
456      - re-enabled use of omega3 (useAbsVorticity)
457    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
458      vector-invariant equations
459      - note: does *NOT* yet use same variable visc. for no-slip BC's.
460    o recoded the lateral boundary conditions for non-hydrostatic w, this time
461      hopefully without new bugs
462      - still to do: biharmonic friction for non-hydrostatic w
463    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
464    o regenerated output for global_ocean_ebm (using -ieee)
465    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
466      of mom_common/
467      - simple re-arrangement of instructions within computing loop
468    checkpoint53d_pre
469    
470    checkpoint53c_post
471    o new version of coupler for AIM+thSIce and Ocean models
472     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
473     - land: change Evaporation of snow
474     - aim with thSIce: fix bug in snow-precip.
475    o changes to calc_gw.F
476     - bug fix for w^2 term near the bottom boundary
477     - (hopefully) improve the lateral slip boundary condtions for use with
478        partial/looped cells
479      - because the bug fix changes two verification experiments anyway (exp5
480        and plume on slope), change the lateral boundary condition from half slip
481        to the value of no_slip_sides
482    o ebm package wasnt quite up to the parallel task. Fixed that.
483    o Adjoint of EBM package + verification
484      * TLM OK
485      * ADM not sufficient accuracy yet (needs further testing)
486    
487    checkpoint53b_post
488    o Commiting new energy balance model to repository
489      * package is pkg/ebm
490      * verif. is verification/global_ocean_ebm
491      * references are in ebm_driver.F
492    C      * X. Wang, P. Stone and J. Marotzke, 1999:
493    C        Global thermohaline circulation. Part I:
494    C        Sensitivity to atmospheric moisture transport.
495    C        J. Climate 12(1), 71-82
496    C      * X. Wang, P. Stone and J. Marotzke, 1999:
497    C        Global thermohaline circulation. Part II:
498    C        Sensitivity with interactive transport.
499    C        J. Climate 12(1), 83-91
500    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
501    C        Destabilization of the thermohaline circulation
502    C        by atmospheric eddy transports.
503    C        J. Climate 7(12), 1870-1882
504    o Will need long integration testing.
505    checkpoint53b_pre
506    
507    o created pkg/mom_common in preparation for variable viscosity code
508    o renamed and split ini_mnc_io
509    o pkg/land: only liquid water can diffuse or run-off
510    o AIM using land: soil wetness availability account for snow
511    o added printMapIncludesZeros to EEPARMS namelist
512    
513    checkpoint53a_post
514    o restore TAMC compatiility for exf_constants.h
515      (no usage of _d in .h)
516    o Additional storing in KPP in an attempt to fix
517      TAMC problem with adjoint of KPP code.
518      (no success...)
519      Identical code works fine with TAF.
520    o Fixed verification/natl_box_adjoint experiments.
521      Initial conditions for Experiments 4 and 5 are now
522      set to "SEAICE_initialHEFF=0", which is more reasonable,
523      and hence gives results closer to that of Experiment 2.
524      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
525    
526    checkpoint53
527    o stable checkpoint with up to date adjoint
528      TLM tests only run for 1st grdchk at the moment. Its unclear if
529      this is a code problem or a problem with resetting code for g_
530      variables that is being autogenerated wrong.
531      Otherwise:
532       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
533       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
534         are both still in chaos following their security messes.
535    
536    checkpoint52n_post
537    o various build (mostly genmake2) changes including:
538      - ability to build/run more easily within Cygwin and MacOS X
539      - more complicated Makefiles with a stronger dependence on Gnu Make
540    o pkg/seaice modifications
541      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
542        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
543        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
544      - changed proxy for geostrophic velocity and updated
545        verification/lab_sea/results/* accordingly
546      - removed ADI dynamic solver from pkg/seaice
547      - replaced all occurrences of 1/CSTICE or 1/CSUICE
548        they caused a segmentation fault under certain circumstances
549      - removed unused field WATR
550    o bug fix in exf-package:
551      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
552         now reflect that.
553    o small fixes in the cal-package:
554      - set reference date to first of January for the 'model'-calendar
555      - failing of cal_CheckDate in cal_FullDate now actually results in a
556        warning
557    o small modifications in exf-package to increase flexibility:
558      - change climtempfreeze from a constant to a runtime parameter that
559        is specified in data.exf_clim (default = -1.9)
560      - introduce runtime parameter windstressmax (default = 2.0) that is
561        specified in data.exf
562    o fix in pkg/thsice:
563      - update Evap (Tsf changes) to be consistent with Latent heat flux
564      - maintain snow precipitation unchanged (even if Tsf >=0).
565     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
566    
567    checkpoint52m_post
568    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
569      this does not change any of the results, because myIter=0 in swfrac always
570      lead to jwtype=2 (the default anyway), but the call makes little sense
571      as a default
572    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
573    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
574      atmospheric model (AIM) to use it ; add a "slab ocean" component.
575    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
576    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
577    o extending useSingleCpuIO option to work with new exch2 I/O format
578      - old-style, missing-tile I/O is still accessible by defining CPP
579        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
580    o monitor package can write to NetCDF files and/or STDOUT
581    o fix re-definition bug in MNC_GRID_INIT_ALL()
582    o doc/api_reference added
583      - a framework for building an API Reference Manual using all
584        the "protex" comments embedded in the code
585      - see pkg/generic_advdiff, pkg/mnc for examples
586    o MNC:
587      - make myThid the last argument for all subroutines
588      - new default for the grid files: NO halos
589      - add useMNC and other run-time flags
590      - separate per-file-group handling of the unlimited dimension
591      - early initialization of MNC w/ flags read at the eeboot stage
592        and lookup tables set in initialize_fixed
593      - write all MNC output to a freshly-created directory
594    o thermodynamics sea-ice (thsice) is now tested with testreport.
595    o test exp. advect_cs: use the standard cs32 grid ; update output.
596    o Added functionality to grdchk:
597      pick global i,j,k position (or nearest wet) where to perform check.
598    
599    checkpoint52l_post
600    o new land formulation:
601      a) use ground enthalpy as prognostic variable to ensure exact
602         energy conservation.
603      b) account for water temperature and for latent heat of freezing
604         in all processes (rain, run-off, ground storage)
605      c) compute surface and ground temperature implicitly.
606    o aim_v23 modification for new land model:
607      a) Treat separately land / ocean / sea-ice surface fluxes
608         to allow implicit computation of land & sea-ice surface temp.
609      b) add snow precipitation.
610    checkpoint52l_pre
611    
612    o fix problem (when 1 tile is empty) in min/max monitor.
613    o fix bug in timeAve (u,vZetatave in common block)
614    o no restoring terms under ice for pkg/seaice
615    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
616    o bug fix for pkg/seaice pickups
617    o change MNC call locations and add coordinate attributes
618    o mask vorticity at the corner ; affects global_ocean.cs output
619    o fix ini_curvilinear_grid ; test CS experiments with mpi
620    o aim.5l_cs: modify sea-ice fraction input file ; update output
621    o exf: Adding simple range check routine for exf fields after read
622    
623    checkpoint52k_post
624    o removed top-level directory "diags"
625      - we migrated these functions to pkg/timeave a long time ago
626    o fixed bug introduced in pkg/monitor
627    o accuracy ctrlprec = 32 insuffient for gradient checks using
628      averaged fields (I/O via cost_averages)
629      -> use ctrl.h in active_file*.F to control I/O precision.
630    o paramter list of CALL ADTHE_MAIN_LOOP
631    o added initial do_the_model_io to ecco
632    o set all ...Freq to zero after cost_final
633      taveFreq, dumpFreq, pChkptFreq
634    o MAIN and ECCO differentiability restored
635    
636    checkpoint52j_post
637    o fix nchklev in tamc.h for global_ocean...
638    o Bringing flow and store directives up-to-date
639    o Really weird thing!
640      call do_the_model_io from the_main_loop with parameters
641      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
642      TAF places a faulty re-call of initialise_varia
643      after cost_final call which should not be there!
644    checkpoint52j_pre
645    
646    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
647      error messages
648    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
649    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
650      debug output
651    o modfied mdsio_writefield.F to handle non-global files under exch2
652    o update AIM Cubed-Sphere exp (aim.5l_cs):
653      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
654    o update AIM Equatorial Channel exp:
655      use standard aim_v23 pkg and change the SST fields to be more realistic.
656    o globalFile now works with exch2
657    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
658      mon_vort3.F to make exch2 friendly with >1 tile per cube face
659    o limit timeave output for hi-res integrations
660    
661    checkpoint52i_post
662    o removed CPP_EEOPTIONS.h from verification/*/code
663    o updated the tiling for global_ocean_pressure
664    checkpoint52i_pre
665    
666    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
667      the old pkg/aim).
668    
669    checkpoint52h_pre
670    o shortened offending lines in exch2_send_rx?.template
671    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
672    o genmake2: add build & execute test for NetCDF code
673    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
674      old grid files, moved CPP_EEMACROS.h to pkg/exch2
675    o added useSingleCPUIO flag to monitor.F and mon_out.F
676    o added temporary hack for sea-ice dynamics on the cube:
677      metric terms are ignored and it is assumed that
678      there is no sea-ice on cube faces 1, 2, 4, and 5.
679    
680    checkpoint52f_post
681    o added exch2 cube routines to pkg/exch2
682    o modified hs94.cs-32x32x5 to use it
683    o added new grid files to hs94.cs-32x32x5
684    checkpoint52f_pre
685    
686    checkpoint52e_post
687    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
688      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
689    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
690      to work with implicit vertical advection and AB ;
691    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
692    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
693     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
694    checkpoint52e_pre
695    
696    o fix bug in impldiff when Nr=1 or Nr=2.
697    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
698    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
699    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
700      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
701    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
702    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
703    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
704    
705    checkpoint52d_post
706    o re-tiled many expts to allow comparison in multi-processor mode
707      - updated output accordingly
708      - changed hs94.128x64x5 to use intial T from file rather than use the
709        random number generator
710    o add infrastructure in model routines for fizhi and gridalt packages
711    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
712    o changes to permit hi-res, cubed-sphere, configuration
713      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
714      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
715      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
716        of surface winds for the cube
717      (A verification experiment, based on global_ocean.cs32x15, but with
718       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
719       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
720       complete with example surface forcing files and matlab scripts to look
721       at the output and compare it with that of global_ocean.cs32x15.)
722    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
723       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
724       to conform to the common rule.
725    o check-in the first version of the coupler + interfaces for multi-components
726       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
727       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
728       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
729       - ocean and atmos. share the same horizontal grid (no interpolation).
730       - exchanges between component and coupler is done in forward_step
731    o new verification experiment, cpl_aim+ocn:
732       coupled ocean - AIM atmosphere on cs32 grid.
733    
734    checkpoint52d_pre
735    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
736    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
737    
738    checkpoint52c_post
739    o Fixing OPTIONS files for use of exf:
740      - ALLOW_ECCO not needed
741      - ECCO_CPPOPTIONS.h should not be included from
742        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
743        as has been the case in the past
744      - All cal/exf related options are currently set in
745        single header file. Should remain so until we
746        agree on a consistent new policy.
747    o Removed all CPP options for cal package.
748      cal has no more CPP options.
749    o modified STOREs in GAD_ADVECTION
750    o corrected key comp. for passkey
751    
752    checkpoint52b_post
753    o new version: "thsice" of thermodynamic sea-ice pkg:
754     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
755     - modify fluxes but do not change theta directly;
756     - light cleaning of bulk_force pkg (still needed with thsice).
757     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
758       + output_thsice.txt to test thsice & bulk_force pkgs.
759    o put back grid & coriolis monitor output.
760    checkpoint52b_pre
761    
762    o call "do_the_model_io" at the beginning (=> dump initial state)
763    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
764    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
765      (need info on NUMBER_OF_PTRACERS)
766    o missing PTRACERS headers in some routines
767    o default tamc.h in pkg/autodiff supposed to crash
768      to ensure proper customization
769    
770    checkpoint52a_post
771    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
772      - moved surfaceTendencyTice from pkg/seaice to main code
773      - subroutine FREEZE_SURFACE now limits only surface temperature
774        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
775        => new output.txt for global_ocean.cs32x15 & global_with_exf
776      - keep the old version of FREEZE for backward compatibility;
777        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
778      - corresponding modifs for TAF directives
779    o added surface flux output variables to TIMEAVE_STATVARS
780    o time-averaged output for pkg/ptracers
781    o fix problem with ECCO-related divided adjoint
782      snapshot file was missing some ad-variables,
783      but no warning issued by TAF
784    
785    checkpoint52a_pre
786    o some bug fixes for #undef REAL4_IS_SLOW
787    
788    checkpoint52 = ecco_c52_e35
789    o after testing adjoints of checkpoint51u_post
790    
791    checkpoint51u_post
792    o this is the post-merge tag of the ecco-branch
793      (needs another clean checkout and re-testing)
794    o various natl_box_adjoint configs and results
795      but no input fields
796    o obcs adjoint not yet merged!
797    o adding ECCO global 1x1 and 2x2 degree configs
798    o updated/extended some store directives for seaice
799    o pkg/ecco now containes ecco-specific part of cost function
800    o top level routines the_main_loop, forward_step
801      supersede those in model/src/
802      previous input data.cost now in data.ecco
803      (new namelist ecco_cost_nml)
804    o in ctrl/ cleaned some cross-dependencies and updated CPP options
805    
806    checkpoint51t_post
807    o this is the pre-merge tag of the ecco-branch
808    
809    checkpoint51s_post
810    o cleanup: removed various obsolete #define-s
811    o pkg/grdchk
812      - renamed 'ph-grd 3' to 'grad-res'
813      - merged from ecco-branch
814        (remaining bug fixes for obcs gradient checks)
815      - additional high-precision output for testreport
816        (grep for 'precision_grdchk_result')
817    
818    checkpoint51r_post
819    o cleaned up or removed CPP_OPTIONS.h files
820    o updated results for some of the tests to reflect the new
821      optfiles (-ieee: -O0 instead of -O3)
822    
823    checkpoint51q_post
824    o cd_code:
825      - moved cd_scheme.F -> cd_code_scheme.F
826      - separate read_checkpoint from cd_code_ini_vars.F
827      - separated cd_code part from write_checkpoint
828      - updated AD_SOURCE, generated .flow
829      - added CD_CODE_VARS.h to the_main_loop
830      - Moving cd_code specific store dir.s to pkg/cd_code
831    o ctrl package totally restructured
832      - pack/unpack now optional and decoupled from
833        xx_/adxx_ I/O
834      - ctrl_pack/unpack cleaned
835        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
836      - confined inclusion of AD_CONFIG.h to where necessary.
837    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
838    
839    checkpoint51p_post
840    o create initial cd_code package
841      - WARNING: the initialization of fields within packages
842        is broken because INI_FIELDS (where READ_CHECKPOINT is
843        called) is called *before* PACKAGES_INIT_VARIABLES.
844        This seems to be backwards since
845        1) its important to initially zero the entire field including
846           the "halo" region
847        2) zeroing needs to be done *before* reading pickup info
848           and the pickup call might or might not happen in any
849           particular run
850      - this needs an overhaul for R2
851    o cleanup verification/*/code/GMREDI_OPTIONS.h
852    o cleanup testreport
853    
854    checkpoint51o_post
855    o bringing AD-related verif's up to date with genmake2
856      - carbon/
857      - global_ocean.90x40x15/
858      - hs.94.1x64x5/
859      - (front_relax/ )
860    o (more) consistent directory structure for AD-related verif.'s
861    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
862    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
863    o bug fix in find_alpha.F for MDJWF:
864      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
865        change rho -> rho-rhoConst
866      - replace call find_rho to find_rhonum
867    o initialisation of rFlx extended to full array (required by TAF)
868      and shifted to thermodynamics
869    o removed PTRACERS.h in ptracers routine
870    o added surfacetendencyPtr to S/R parameter list pracers_forcing
871    o Correcting initialisations for fVerU, fVerV.
872    o helping TAF to recognize dependency on kUp for
873      fVerU, fVerV
874    o Replacing delZ by delR in pkg/ctrl/
875    checkpoint51o_pre
876    
877    o undid all of cp51 pending some cleanups and discussion
878    o added the [#include "AD_CONFIG.h"] statement to all files that need
879       it for adjoint/tl #defines
880     o re-worked the build logic in genmake2 to support AD_CONFIG.h
881     o removed tools/genmake since it no longer works
882    
883    checkpoint51n_post
884    o modifications to make FREEZE flux visible to pkg/kpp
885      - moved surfaceTendencyTice from pkg/seaice to main code
886      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
887      - subroutine FREEZE now limits only surface temperature
888        (this means new output.txt for global_ocean.90x40x15,
889         global_ocean.cs32x15, and global_with_exf)
890    o added surface flux output variables to TIMEAVE_STATVARS
891    
892    checkpoint51n_pre
893    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
894    o added [#include "AD_CONFIG.h"] to all files that use the following
895      defines:
896      - ALLOW_ADJOINT_RUN
897      - ALLOW_TANGENTLINEAR_RUN
898      - ALLOW_ECCO_OPTIMIZATION
899    
900    checkpoint51m_post
901    o incorporating changes to get TAMC/TAF working in genmake2
902      - added new TAMC/TAF targets to the Makefile
903      - various cleanups related to package handling
904      - these changes should have no impact on the forward model
905    
906    checkpoint51l_post
907    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
908     - faster algorithm for cal_addtime.F
909     - higher precision arithmetic, where needed
910     - pkg/exf *startdate variables changed from calendar date to
911       model integration time
912    
913    checkpoint51l_pre
914    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
915    o enable to apply restoring on S & T only in a latitude band.
916    o update output (external_forcing_surf modif. change truncation errors)
917       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
918    
919    checkpoint51k_post
920    o change default to: useNHMTerms=.FALSE.
921     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
922       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
923     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
924        exp1, ideal_2D_oce
925     - change data file of oceanic exp (leave the results unchanged for now)
926       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
927    o set gravitySign automatically according to the vertical coordinate used
928      (and change sign: back to "logical" value: +1 when R increases downward)
929    o added an include barrier to the default CPP_OPTIONS.h and
930      removed the #include "PACKAGES_CONFIG.h" from it
931    o fix a bug in mom_fluxform (from chk51j_post)
932    
933    checkpoint51j_post
934    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
935    o adjusted some flow directives (dynamics, thermodynamics)
936    o added cubed-sphere case to test cost function
937    o heckpoint_lev?_directives.h now include
938      pkg-specific directives, whenever those are enabled.
939    o Moving pkg-specific flow directives to corresponding pkg
940      Moving pkg-specific differentiation list to corresponding pkg
941      Moving pkg-specific checkpoint-lev storing to corresponding pkg
942      ---> conventions are
943           - pkg_ad.flow
944           - pkg_ad_diff.list
945           - pkg_ad_check_lev?_dir.h
946    
947    checkpoint51i_post
948    o merge of the branch-genmake2
949      - knowingly breaks the older genmake
950      - automatic generation of all ALLOW_${PKG_NAME} defines
951      - new testreport supersedes older testscript
952    o large number of package inclusion and header cleanups
953    checkpoint51i_pre
954    
955    o new output for adjoin of global ocean vector invariant
956    o fix for checkpoint of thermodynamic seaice and bulk_force
957    o Steph gchem various cleanups
958    
959    checkpoint 51h_pre
960    o fixed some single quotes
961    o modify gchem pkg to be more versatile
962    o modifications to clean up dic pkg
963    o add pkg/cfc
964    
965    checkpoint51g_post
966    o provide links for ARPACK and ADM*TLM
967    o start removing verification/vero/
968    o update AD-related stuff
969      (in particular some IF-statements in model/src/ routines)
970    o adding to verification/global_ocean.90x40x15/ adjoint of
971      vector invariant setup
972    
973    checkpoint51f_post
974    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
975    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
976      of tracer Green's fucntions for ocean inversion project.
977    
978    checkpoint51f_pre
979    o Added on-the-fly spatial interpolation capability
980        "USE_EXF_INTERPOLATION" to pkg/exf.
981      - This is a temporary Cartesian-grid hack until
982        the super-duper ESMF coupler becomes available.
983      - See verification/global_with_exf/README for usage example.
984      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
985        flags and modified pkg/seaice accordingly.
986    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
987        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
988        non-local transport term.
989    
990    checkpoint51e_post
991    o pkg/mom_vecinv:
992      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
993      - add time-ave diagnostic of vorticity advection.
994    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
995    o atmospheric geopotential: - include water vapor effect;
996                                - use p^kappa in p* scaling.
997    o land pkg: read initial state from files.
998    o AIM : add stratospheric drag in the upper level
999    
1000    checkpoint51d_post
1001    o change function ILNBLNK (=> last non-blank char.) to return zero
1002      (instead of the string length) when the string. char is empty
1003    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1004    o modif's to restore TAMC compatibility
1005      - avoid "_d" constructs in PARAMETER declarations
1006      - avoid interrupting lines by comment lines
1007    o Use cluster local disks for purely local I/O
1008      vs. globally visible disks needed for ctrl stuff
1009      (merged from ecco-branch)
1010      - new active_file_loc... and mdsio_..._loc routines
1011      - affected packages: autodiff, ctrl, grdchk, mdsio
1012    
1013    checkpoint51c_post
1014    o introducing integer flag debugLevel
1015      - debLevZero: suppress all output
1016      - debLevA: standard
1017      - debLevB: equivalent to current debugMode=.TRUE.
1018    o introducing pathname variable mdsioLocalDir for mdsio
1019      that can be specified at runtime
1020      (relevant for cluster I/O to local disk)
1021    `
1022    >>>checkpoint51b_post
1023    adjoint of ptracers
1024    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1025    o extended state in checkpoint_lev?, etc.
1026    o alternative ctrl/cost with tr1 or ptracer
1027    o new comlev1_bibj_ptracers
1028    o new ptracers.flow
1029    o made ptracers_forcing same as external_forcing_s
1030    o added verification for adjoint with ptracers
1031      - adm. grdchk fail so far
1032      - tlm. grdchk OK
1033      - checked tapelev/comlev recomputations: OK
1034    <<<checkpoint51b_pre
1035    
1036    checkpoint51a_post
1037    o added code for biogeochemistry package
1038      - new pkgs: dic, gchem
1039      - new subroutine in ptracers
1040    o modify code for biogeo packages
1041      - in model/src and pkg/ptracers
1042    
1043    checkpoint51
1044    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1045      - autodiff, ctrl, exf, grdchk, seaice
1046      kept separate packages
1047      - cost, ecco, obcs
1048    o updating verification/internal_wave, verification/lab_sea
1049      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1050    
1051    checkpoint50i_post
1052    o Preparing next differentiable checkpoint and sync
1053      of MAIN vs. ecco-branch
1054      - 1st step: this one is differentiable
1055      - 2nd step: next(! not this) checkpoint will have updated packages
1056                  from ecco-branch)
1057    
1058    checkpoint50h_post
1059    o new package "land": provide surface BC for AIM.
1060    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1061    o AIM: use true log-P extrapolation for near surface temp (= as in
1062        F.Molteni paper) ; update aim.5l_cs output.
1063    o New variable in PARM03 for more flexible pickups
1064    o somewhat cleaned package initialisation sequence for
1065      ctrl/ cost/ ecco/ in packages_... routines
1066    
1067    checkpoint50g_post
1068    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1069      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1070      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1071        made the default because of faster convergence than ADI
1072    
1073    checkpoint50f_post
1074    o exf totally restructured
1075      - replaced all exf_set_ routines by one generic exf_set_gen.F
1076        and made sure it's still differentiable
1077      - split exf_getffields.F into new exf_bulkformulae.F
1078      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1079      - updated adjoint/makefile and relevant verif. accordingly
1080    
1081    checkpoint50f_pre
1082     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1083          + change Evap over land. (update aim.5l_cs output)
1084     o added missing .cvsignores and made uniform across expts
1085     o changed configuration of tidal_basin_2d expt
1086     o added pkg/debug functions for tracing code in fatal crashes
1087     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1088     o new fn in pkg/monitor to stop model if solution grows too big
1089     o removed lots of single quotes from comments
1090    
1091    checkpoint50e_post
1092    o make KPP work with PTRACERS
1093     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1094       nearly a copy of kpp_transport_s
1095     - there is no analogue to SurfaceTendencyS, so I have to use
1096       gPtr(of the surface layer) instead
1097    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1098    checkpoint50e_pre
1099    
1100    checkpoint50d_post
1101    o change kpp output from multiple-record state files to single-record state
1102      files analogous to write_state.F
1103    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1104      analogous to the cg2d-related output.
1105    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1106      so that writing to internal file fn (with length 512) fails.
1107    checkpoint50d_pre
1108    
1109    checkpoint50c_post
1110    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1111    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1112    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1113    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1114    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1115    
1116    checkpoint50c_pre
1117    Merging from release1_p13:
1118    o bug fix for pkg/seaice dynamic solver
1119    o Added SEAICE_initialHEFF to pkg/seaice
1120    
1121    checkpoint50b_post
1122    o store u*,v* in gU,V instead of in guNm1,gvNm1
1123    o in order to put the momForcing out of the Adams-Bashforth:
1124      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1125      to timestep.F
1126    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1127    o re-generate output for highly sensitive test-exp:
1128       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1129    
1130    checkpoint50b_pre
1131    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1132    o corrected CPP option mismatch in exf_Bulk... functions for case
1133      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1134    
1135    checkpoint50a_post
1136    o Bug fix for merging between c50 and KPP.
1137      ikey was passed from thermodynamics to kpp_calc via
1138      common block rather than being recomputed in kpp_calc,
1139      in contradiction with new key itdkey.
1140      New key ikppkey created, and tamc.h headers updated.
1141    
1142    checkpoint50
1143    - 2nd step of merge with ecco-branch:
1144      merge changes in ecco-branch back into main trunk
1145    - bug fix in find_alpha
1146    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1147    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1148    - merged some sliced AD support routines
1149    
1150    checkpoint49
1151    merged from ecco-branch:
1152    o exf:
1153      - Enable initialisation of forcing fields to constant
1154        (runtime) values.
1155      - in exf_getffields.F
1156        Reduce i-/j-loop to interior domain, discarding overlaps.
1157        That also fixes wrong TAF-key computations for key_1, key_2
1158        with bulf formulae.
1159      - exf_init.F modify #ifdef for exf_init_evap
1160      - exf_getffieldrec.F, ctrl_getrec.F
1161        The following INT-usages are not safe:
1162          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1163          fldcount = int(fldsecs/fldperiod) + 1
1164        and were modified.
1165    o autodiff: checkpoint_lev...
1166      - updated storing for bulk formulae (some arrays were missing)
1167      - added state for seaice package
1168      - synchronized with main branch
1169    o DIVA:
1170      Modif.s in
1171      - the_main_loop.F
1172      - the_model_main.F
1173      and added cost_final_restore.F cost_final_store.F
1174      o With these changes, it is possible to fully separate
1175        the first forward run to compute the cost function (mdthe_main_loop)
1176        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1177        into separate model executions.
1178        This enables better tuning of DIVA to given queue sizes.
1179      o Loss of cost function value in consecutive DIVA runs is
1180        fixed by storing to 'costfinal' file.
1181      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1182        beginning/end of adjoint integration is accounted for.
1183      The current changes apply to TAF-1.4.26.
1184      TAF has one remaining bug, requiring one manual change
1185      (see MITgcm manual).
1186    o cal: synchronized between MAIN and ecco-branch
1187    
1188    checkpoint48i_post
1189    o Changes to restore differentiability of code w.r.t. previous tag
1190      (mostly adding new routines to make list and replacing
1191      pressure by totPhiHyd).
1192    o Updated and merged grdchk package
1193      - has both ADM and TLM checks
1194      - works for single- and multi-proc.
1195      - output cleaned
1196      - worked successfully for parallel DIVA
1197    o genmake:
1198      - Adding -platform=SP4
1199      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1200    o Modif. for DIVA:
1201      ctrl_unpack should not be called in intermediate DIVA interval.
1202      (similar thing would apply for active files such as
1203      tbar, sbar, psbar, which should not be reinitialised;
1204      only relevant for ecco-branch)
1205    
1206    checkpoint48h_post
1207    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1208    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1209    o Added SEAICE_initialHEFF to pkg/seaice
1210    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1211    
1212    checkpoint48g_post
1213    --- EOS:
1214    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1215      store total Potential in totPhyHyd for diagnostics & EOS.
1216    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1217    --- Pressure/geopotential gradient:
1218    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1219    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1220      ( changes results of global_ocean_pressure )
1221    o NLFS + z-coord.: add eta*Rho' contribution.
1222    o accurate phiHyd when using interface-W at the middle between 2 centers
1223     ( changes results of ideal_2D_oce )
1224    o includes r* 2nd term in potential gradient.
1225    
1226    checkpoint48f_post
1227    Merging from release1_p12:
1228    o Modifications for using pkg/exf with pkg/seaice
1229      - improved description of the various forcing configurations
1230      - added basic radiation bulk formulae to pkg/exf
1231      - units/sign fix for evap computation in exf_getffields.F
1232      - updated verification/global_with_exf/results/output.txt
1233    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1234      (SBO) core products, including oceanic mass, center-of-mass,
1235      angular, and bottom pressure (see pkg/sbo/README.sbo).
1236    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1237      to avoid negative values in shallow regions.
1238      - updated verification/natl_box/results/output.txt
1239      - updated verification/lab_sea/results/output.txt
1240    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1241    o Added useSingleCpuIO option (see PARAMS.h).
1242    o Updated useSingleCpuIO option in mdsio_writefield.F to
1243      work with multi-field files, e.g., for single-file pickup.
1244    o pkg/seaice:
1245      - bug fix in growth.F: QNET for no shortwave case
1246      - added HeffFile for specifying initial sea-ice thickness
1247      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1248    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1249      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1250    o pkg/seaice:
1251      - adjoint-friendly modifications
1252      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1253    
1254    checkpoint48e_post
1255    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1256    o dynamics: change definition of computational domain & adapt mom_fluxform
1257      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1258    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1259        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1260        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1261        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1262        inverted_barometer solid-body.cs-32x32x1
1263      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1264    
1265    checkpoint48d_post
1266    o in preparation for r*:
1267     a) use pre-computed gradient of hydrostatic potential:
1268        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1269     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1270        => affects results of glob_oce_pressure (different truncation error)  
1271      update output.txt of ideal_2D_oce & global_ocean_pressure
1272    
1273    checkpoint48d_pre
1274    o in preparation for r*:
1275      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1276      pass the 2 comp. of the grad. as arguments to momentum S/R.
1277      but for the moment, only used if it does not change the results.
1278    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1279    
1280    checkpoint48c_post
1281    Modifications in treatment of initial flux forcing controls
1282    to avoid extra storing of flux fields.
1283    
1284    checkpoint48c_pre
1285    o Added tidal_basin_2d experiment (currently 1D!)
1286    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1287    
1288    checkpoint48b_post
1289    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1290     (modification to pressure gradient not yet implemented)
1291    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1292      (for U & V) that are used for vertical advection of momentum.
1293    
1294    checkpoint48a_post
1295    o In preparation for r*, use temp. array to compute vertical transport
1296       in flux-form momentum pkg. => change results of few test-exp.
1297      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1298                        lab_sea, natl_box & plume_on_slope
1299    
1300    checkpoint48
1301    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1302    
1303    checkpoint47j_post
1304    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1305    o moved adexch from forward_step to addummy_in_stepping
1306    o added exch in ctrl_map_...
1307    o aveFreq.=0. at end of cost_final to avoid overwrite in
1308      reverse checkpointing loop
1309    o Yet more changes in gmredi:
1310      * adgmredi_calc_tensor
1311        avoiding all recomputation of gmredi_slope_limit
1312      * adgmredi_x/y/rtransport
1313        added flag for excessive storing to avoid recomp. of
1314        u/v/rtans, dTdx/y/z
1315        -> this is not really necessary and very memory-consuming
1316      * adgmredi_slope_psi:
1317        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1318      * gmredi_slope_limit
1319        re-activated full calculation of taperfct for case 'ac02'
1320    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1321    
1322    checkpoint47i_post
1323    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1324    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1325      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1326    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1327    o gmredi: fix few bugs.
1328    
1329    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1330    This will be a good checkpoint to plug into the ecco-branch.
1331    o few modif.'s to get latest version adjointed
1332      (mainly kick out code in ini_linear_phisurf)
1333    o modif's to run adjoint with exactConserv
1334    o case GM_BOLUS_ADVEC should be cleaned
1335      S/R gmredi_slope_psi should be cleaned
1336    o verification/carbon now has exactConserv=.TRUE.
1337    
1338    checkpoint47g_post
1339    o time-average AIM output: becomes independent from statvars time-average
1340      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1341    o After TAF bug fix:
1342      Tested adjoint of gmredi package.
1343      Tests were done with checkpoint47 rather than with latest
1344      checkpoint47f_post since the latter is broken for the adjoint
1345      verification/carbon/ contains both ADM and TLM gradient checks.
1346    Here they are, before they get changed/lost/stolen.
1347    Mostly modif.'s to fix numerical sensitivities.
1348    Gradient checks OK for
1349    - GM_taper_scheme:
1350      * clipping
1351      * ac02
1352      * linear
1353      * glw91
1354      * dm95
1355      * ldd97
1356    - GMREDI_OPTIONS:
1357      * GM_VISBECK_VARIABLE_K
1358      * GM_NON_UNITY_DIAGONAL
1359      * GM_EXTRA_DIAGONAL
1360      * GM_BOLUS_ADVEC
1361    in conjunction with data.gmredi parameters to be checked in
1362    in a few minutes under verification/carbon/code/
1363    
1364    checkpoint47f_post
1365    Merging from release1_p10:
1366    o modifications for using pkg/exf with pkg/seaice
1367      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1368        and SEAICE_EXTERNAL_FLUXES
1369      - pkg/exf CPP options EXF_READ_EVAP and
1370        EXF_NO_BULK_COMPUTATIONS
1371      - usage examples are Experiments 8 and 9 in
1372        verification/lab_sea/README
1373      - verification/lab_sea default experiment now uses
1374        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1375    
1376    checkpoint47e_post
1377    o created a tag prior to creating a branch
1378    
1379    checkpoint47d_post
1380    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1381      at the bottom boundary had an erroneous half slip boundary condition
1382    o added bottom drag and no slip boundary condition capabilities to
1383      oceanic pressure coordinates code
1384    o added new verification experiment global_ocean_pressure, this experiment is
1385      also described in the tutorial section of the manual
1386    checkpoint47d_pre
1387    
1388    checkpoint47c_post
1389    o Added a verification experiment for a global cubed-sphere ocean run
1390      -  verification/global_ocean.cubed32x32x30
1391      -  uses pkg/therm_seaice and pkg/bulk_forcing
1392    
1393    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1394    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1395      when using P-coordinate; only implemented for atmospheric config.
1396    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1397      NOTES: requires option NONLIN_FRSURF to be "#define".
1398    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1399    
1400    checkpoint47b_post
1401    Merging from release1_p9:
1402    o pkg/seaice
1403      - removed GOTO's and added taf directives
1404      - double precision constants to reduce the g77 (Linux)
1405        to F77 (SGI) differences reported in release1_p8
1406    o tools/genmake
1407      - added SGI options
1408    o verification/testscript
1409      - updated to that of checkpoint47a_post
1410    o verification/global_ocean.90x40x15/input/eedata
1411      - modified for SGI f77 compatibility
1412    o verification/lab_sea
1413      - added description of sea-ice model
1414      - added missing matlab routines
1415      - added test of thermodynamics parallelization
1416    
1417    checkpoint47a_post
1418    o new pkg: aim_v23
1419     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1420       for now, keep the same surface forcing as before.
1421     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1422     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1423     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1424    o add diagnostic of surface correction term in monitor output
1425    
1426    o bulk_force and therm_seaice
1427    - Two packages:  bulk_force (Bulk forcing)
1428      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1429    - Earlier integration from Stephaine Dutkiewicz
1430      and Patrick Heimbach.
1431    - Two ifdef statements for compile time,
1432       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1433    
1434    checkpoint47
1435    differentiable version of checkpoint46n_post
1436    o bug fix in quasihydrostaticterms
1437    o * "clean" adjoint code (in terms of extensive recomputations)
1438        can now be obtained for all GMREDI options (i.e. for
1439        - GM_VISBECK_VARIABLE_K
1440        - GM_NON_UNITY_DIAGONAL
1441        - GM_EXTRA_DIAGONAL
1442        - GM_BOLUS_ADVEC )
1443      * However, wrong gradient check problem remains unsolved.
1444      * New CPP options have been introduced for different
1445        tapering schemes
1446    o external_fields_load now part of differentiation list
1447    o pressure needs multiple storing;
1448      would be nice to have store_pressure at beginning or
1449      end of forward_step, e.g. by having phiHyd global (5-dim.)
1450      (NB: pressure is needed for certain cases in find_rho,
1451      which is also invoked through convective_adjustment).
1452    o recomputations in find_rho for cases
1453     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1454    o #define ATMOSPHERIC_LOADING should be differentiable
1455    o ini_forcing shifted to begining of initialise_varia
1456    o Incorporating QNVS line search routines into MITgcm
1457      (this is separate code, and therefore not under pkg)
1458      lsopt/, optim/
1459    o Updated verification/carbon/
1460      - #define GM_VISBECK_VARIABLE_K
1461      - GM_taper_scheme    = 'ldd97'    
1462    
1463    checkpoint46n_post
1464    Merging from release1_p8:
1465    o verification/natl_box:
1466      updating new external_fields_load routine
1467    o New package: pkg/seaice
1468      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1469      The sea-ice code is based on Hibler (1979-1980).
1470      Two sea-ice dynamic solvers, ADI and LSR, are included.
1471      In addition to computing prognostic sea-ice variables and diagnosing
1472      the forcing/external data fields that drive the ocean model,
1473      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1474      The implied surface heat flux is then stored in variable
1475      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1476      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1477      non-local transport term.  Because this call precedes model
1478      thermodynamics, temperature under sea-ice may not be "exactly" at
1479      the freezing point by the time theta is dumped or time-averaged.
1480      N.B.: fairly large differences in accuracy occur across
1481            different platforms/compilers; comparison between
1482            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1483            generated output gives:
1484       T           S           U           V
1485      C D M    c        m  s        m  s        m  s        m  s
1486      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1487      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1488      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1489    
1490      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1491    o GAD:
1492      - generated new common blocks to account for call of
1493        same gad routines with differing traceridentities
1494        (needed to modify tracerIdentity indices in GAD.h)
1495      - generated separate common blocks for case useCubedSphereExchange
1496        (Department of Futurology)
1497      - parameter lists to gmredi_?transport: added tracerIdentity
1498      - added new key indices to tamc.h
1499    o external_fields_load:
1500      - added this routine to TAF list
1501      - needed to make some common blocks global and additional storing
1502        along the same lines as exf package (checkpoint_lev?_directives.h)
1503    o exf:
1504      updated external forcing package
1505      - bug fixes carried over from ecco-branch
1506        (missing OBCS_OPTIONS.h in two routines)
1507      - enable easy to use "no forcing".
1508      - added exf I/O for atmospheric loading
1509      - added exf I/O for runoff data
1510      - transfered scaling between exf <-> MITgcm to exf namelist
1511    o Adding new verification experiment global_with_exf.
1512      This verification experiment is almost identical to the
1513      global_ocean.90x40x15 experiment, except that it uses
1514      the exf (and cal) package instead of the
1515      external_fields_load routine (cf README file).
1516    
1517    checkpoint46m_post
1518    o modified testscript to return -- when there are no lines of "%MON" output
1519    o added new flag "quasiHydrostatic" for QH mode
1520      and new routine quasihydrostaticterms()
1521    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1522      New routine: mom_u_coriolis_nh()
1523    o fixed sign of non-hydrostatic metric terms in u and v equations.
1524      Depend on correct sign of gravitySign.
1525    o added work.pc* to .cvsignore in aim directories using ifc
1526    o introduced flag for controllin non-hydrostatic metric terms
1527    o removed gravitySign from PARM04
1528    o switched to g77/ifc from pgf77 in aim experiments
1529    
1530    checkpoint46l_post
1531    o made convective adjustment work with pressure coordinates:
1532     - changed the direction of k-loop in convective_adjustment.F for the
1533       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1534     - adjusted the reference pressure k-index in convective_adjustment.F
1535     - adjusted the convection condition in convect.F (in analogy to
1536       calc_ivdc.F)
1537     - convective_adjustment no longer computes anything on the halos
1538     - removed the warnings about negative salinity from find_rho.F and
1539       find_alpha.F; instead the new routine look_for_neg_salinity, called
1540       at the beginning of find_rho, find_alpha, and find_beta, does a
1541       check of the entire slice, if CPP-option
1542       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1543    checkpoint46l_pre
1544    
1545    checkpoint46k_post
1546    o fixed the verification/global_ocean.90x40x15 experiment:
1547     - new bathymetry (the world according to A., JMC, and M.)
1548     - new initial fields and forcing fields (*.bin files)
1549     - new POLY3.COEFFS (for the next release one should switch to a full
1550       equation of state: JMD95P or MDJWF)
1551     - fixed several errors and redundancies in the data file
1552     - experiment uses looped cells
1553     - added matlab directory with diagnostic scripts for plotting of output
1554    
1555    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1556     - read AIM physics parameters from a file (data.aimphys)
1557     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1558    
1559    checkpoint46j_post
1560    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1561    o move wVel computation at the end of the time step, in S/R integr_continuity
1562    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1563    o update timeave pkg for wVel diagnostic.
1564    checkpoint46j_pre
1565    
1566    checkpoint46i_post
1567    o Clean up AIM package (and keep the results unchanged):
1568      include CPP_OPTION and use IMPLICT NONE in all routines ;
1569      declare all the variables _RL ; use _d 0 for all numerical constants.
1570      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1571    
1572    checkpoint46h_post
1573    o cleaned up the use of rhoNil and rhoConst.
1574      - rhoNil should only appear in the LINEAR equation of state, everywhere
1575        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1576        and the dynamical equations are all divided by rhoConst
1577    o introduced new parameter rhoConstFresh, a reference density of fresh
1578      water, to remove the fresh water flux's dependence on rhoNil. The default
1579      value is 999.8 kg/m^3
1580    o cleanup up external_forcing.F and external_forcing_surf.F
1581      - can now be used by both OCEANIC and OCEANICP
1582    checkpoint46h_pre
1583    
1584     Added code to convert surface volume flux (fresh water) into
1585     a mass flux when using P coordinates in the ocean (OCEANICP).
1586     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1587    
1588    checkpoint46g_post
1589    o Include a new diagnostic variable phiHydLow for the ocean model
1590      - in z-coordinates, it is the bottom pressure anomaly
1591      - in p-coordinates, it is the sea surface elevation
1592      - in both cases, these variable have global drift, reflecting the mass
1593        drift in z-coordinates and the volume drift in p-coordinates
1594      - included time averaging for phiHydLow, be aware of the drift!
1595    o depth-dependent computation of Bo_surf for pressure coordinates
1596      in the ocean (buoyancyRelation='OCEANICP')
1597      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1598        Theta, Salinity, and Pressure in the parameter list. This routine is
1599        presently contained in find_rho.F. This routine does not give the
1600        correct density for 'POLY3', which would be a z-dependent reference
1601        density.
1602    o cleaned up find_rho
1603      - removed obsolete 'eqn' from the parameter list.
1604    o added two new verification experiments: gop and goz
1605      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1606    checkpoint46g_pre
1607    
1608    checkpoint46f_post
1609    o Enable tangent linear (forward mode) gradient checks:
1610      - extended active file handling to g_... files
1611      - added TANGENT_SIMULATION to theSimulationMode
1612      - extended grdchk package accordingly
1613    o added tangent linear setup in verification/carbon/code_ftl
1614    o added adjoint setup in verification/front_relax/code_ad
1615    
1616    checkpoint46e_post
1617    o Added new equation of state -> MDJWF
1618      - EOS of McDougall et al., 2002, JAOT, submitted
1619      - caveat: the equation of state is only valid for a smaller (more
1620        realistic?) range of values than JMD95P/Z and UNESCO
1621      - added masks to the calculation of pressure in store_pressure
1622      - added more check values for density in check_eos (ini_eos.F), some of
1623        the old check values are out of the range of the MDJWF-eos, so don't
1624        expect perfect matches for those
1625    checkpoint46e_pre
1626    
1627    checkpoint46d_post
1628    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1629      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1630      case of pressure coordinates. eosType='JMD95Z' in
1631      combination with buoyancyRelation='OCEANICP' now causes an error.
1632    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1633      in find_alpha/beta.
1634    checkpoint46d_pre
1635    
1636    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1637      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1638    
1639    checkpoint46c_post
1640    o Changes necessary for ocean in p-coordinates
1641     -  Added new buoyancy relation = 'OCEANICP'
1642     -  Added new parameters = gravitySign (this used to be contained inside
1643        the factor dRdZ which I added when we first switched to R coordinates).
1644     X GM/Redi is not compatible (yet)
1645     X bottom drag and no-slip need to be debugged.
1646    checkpoint46c_pre
1647    
1648    checkpoint46b_post
1649    o Added new equation of state -> JMD95Z and JMD95P
1650      - EOS of Jackett and McDougall, 1995, JAOT
1651      - moved all EOS parameters into EOS.h
1652      - new routines ini_eos.F, store_pressure.F
1653    o Added UNESCO EOS, but not recommended because it requires
1654      in-situ temperature (see JMD95)
1655    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1656      unesco.f to be used with POLY3
1657    checkpoint46b_pre
1658    
1659    checkpoint46a_post
1660    o Added (atmospheric) pressure loading
1661      - new field in FFIELDS.h, etc...
1662      - new cpp flag ATMOSPHERIC_LOADING
1663    o Changed hFacC to _hFacC in calc_phi_hyd.F
1664    o Added SHORTWAVE_HEATING to some files for consistency
1665    checkpoint46a_pre
1666    
1667    checkpoint46
1668    further merges from release1_p5
1669    o new ctrl package
1670      - adopted from ECCO environment to enable optimization
1671      - added Eliassen Palm fluxes to controls
1672    o added Eliassen Palm flux controls to gradient check package
1673    o cost package
1674      - Compatible with new ctrl package
1675      - added Eliassen Palm cost hooks
1676      - modif's of existing cost functions
1677    o Adjoint-related bug fixes in kpp:
1678      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1679      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1680    o autodiff package
1681      - flow directives:
1682        + new for S/R do_the_model_io
1683        + enhanced for S/R checkpoint
1684        + new gmredi.flow
1685      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1686        disable adcommon.h/g_common.h by default.
1687      - fixed problem for adjoint of global_max
1688    o modified verification/carbon/
1689    o New setup for adjoint of global_ocean
1690    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1691    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1692    o incorporated hooks for sponge layer code (external_forcing.F)
1693    
1694    checkpoint45d_post
1695    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1696    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1697      (affects plume_on_slope "cg2d" output)
1698    o add new parameter deltaTfreesurf for free-surface time stepping
1699    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1700    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1701    o change phiMin in exp1 (to agree with documentation)
1702    o add new flags:
1703     - T,S forcing inside/outside Adams-Bashforth
1704     - turn off temp,salt advection and/or forcing
1705     - for each tracer, define internal flag for multiDimAdvection & A-B
1706    o monitor: change definition of KE to check conservation of Energy
1707    
1708    checkpoint45c_post
1709    o Removed f90 comments ("!")
1710    o Modified initialisations to enable exf package for MITgcm
1711      (without invoking ECCO_PACKAGE).
1712    o modifications to gradient check package (Martin Losch)
1713      - enable centered differences
1714      - modified format of standard output
1715    
1716    checkpoint45b_post
1717    o cleaned exchange calls in cg2d
1718    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1719    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1720      to configure barotropic setup (Martin Losch)
1721    o moved some initialisations within bi,bj loop in dynamics
1722      (TAF flow dependency)
1723    o in initialise_varia, moved call packages_init_variables
1724      before convective_adjustment_init
1725      (corresponding adjustment of TAF tape initialisation).
1726    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1727    
1728    checkpoint45a_post
1729    o compute Rho over the whole domain (extend iMin,jMin indices)
1730    o specific exchange for X-slice domain (case Ny=1)
1731    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1732    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1733    
1734    checkpoint44h_post = checkpoint45
1735    o Fix to restore differentiability:
1736      place at which packages_init_variables is called in
1737      initialise_varia is crucial for reverse control flow.
1738    o modifications in GMRedi to enable stable adjoint
1739      (corresponding modif's in thermodynamics, dynamics)
1740    o added missing hook for sponge layer code in external_forcing
1741    o modified test cost functions
1742    o storing in gad_advection (plus removal of write(0,*)!
1743    o missing headers TR1.h added in convective_adjustment routines
1744    o errorMessageUnit set non-equal zero in eeboot
1745      (conflict on some platforms, e.g. IBM SP3)
1746    o modified carbon verif.
1747    
1748    checkpoint44h_pre
1749    o vertical grid option: allow to put the Interface at the middle between
1750      2 cell-centers ; replace delZ in pkg/kpp by drF.
1751    o GM Advective form: Tracers are advected using the residual transport (=
1752      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1753    
1754    checkpoint44g_post
1755    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1756      results) ; ifdef missing in thermodynamics.F
1757    
1758    checkpoint44f_pre,checkpoint44f_post
1759    o added PTRACERS package
1760      This allows an arbitrary number of passive tracers to be integrated
1761      forward simultaneously with the dynamicaly model.
1762      + Implemented so far:
1763        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1764        - I/O and checkpointing
1765        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1766      + Not implemented so far:
1767        - KPP
1768        - OBCS
1769      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1770        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1771        line in data.pkg.
1772      + This package is disabled by default since it increases storage.
1773    
1774    
1775    o testscript: added -cleanup option
1776    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1777                 b) enable to filter 2D fields.
1778    
1779    checkpoint44e_pre,post
1780    o re-wrote convective adjustment to use pre-calculated weights
1781      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1782      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1783      Original calls to convect() still in place.
1784    
1785    chkpt44d_pre,post
1786    o added missing EXCLUDE_MONITOR flags
1787    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1788      (incompatible typ in MIN/MAX expressions caused problems
1789      on IBM SP3)
1790    o in genmake added variable MAKEDEPEND
1791      plus resetting for case SunOS
1792    o added timer_stats.c routine for IBM SP3
1793    o removed variables in dynamics
1794    !!! I forgot to create tag chkpt44d_pre !!!
1795    !!! But chkpt44d_pre = chkpt44c_post    !!!
1796    
1797    o real fresh water flux implemented with non-linear free-surface.
1798    
1799    chkpt44c_pre,post
1800    o few fix (mask in shap_s2, EmPmR in external_field_load,
1801      USE_NATURAL_BCS in solve_for_P);
1802    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1803    
1804    checkpoint44b_pre/_post
1805    o merge of relevant stuff from the ecco-branch:
1806      - genmake: removed $S64 overwrite for case SunOS
1807      - pkg/exf: update and corrections for field swapping and obcs
1808      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1809                  harmonized between ECCO and MITgcm
1810      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1811                      updated checkpointing_lev... lists for obcs
1812      - model/src: minor changes in forward_step, plot_field
1813                   added directive for divided adjoint in the_main_loop
1814      - pkg/mdsio: added mdsio_gl_slice
1815    
1816    o check parameters & config (chkpt44a_pre,post)
1817    o OBC and NonLin_FrSurf.
1818    
1819    checkpoint44
1820    o fix bug in mom_vi_del2uv
1821    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1822    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1823    o update AIM experiments (NCEP input files)
1824    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1825    o added some stuff for AD
1826    
1827    checkpoint43
1828    o added two new advection tests
1829    o added global 4x4 degree ocean test
1830    o added test of H&S94 with free surface on cube
1831    o some final mods for gradient check, adjoint,...
1832    
1833    checkpoint42
1834      Fixed AD-related problems:
1835    o Store directives up-to-date with re-arranged Adams-Bashforth
1836      (mainly thermodynamics.F)
1837    o New store directives for multi-dim. advection schemes
1838      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1839      * new common block and key passkey
1840      (mainly gad_advection.F)
1841    o Modified store directives for split of dynamics/thermodynamics
1842      for the case ALLOW_KPP
1843    o Cleaned argument list for timestep_tracer.F
1844    
1845    checkpoint41
1846    o re-formatted/added comments in prologues of key subroutines
1847      to work with protex
1848    
1849    checkpoint40
1850    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1851    o added FLT (floats) package from Arne along with demo. experiment
1852    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1853      implementation of forward-in-time forcing terms
1854    o more mods for non-linear free-surface including new variable
1855    o modified multi-dim method to work on cube
1856    o bug fix in KPP (from DM)
1857    
1858    checkpoint40pre9
1859    o added DST advection schemes
1860    o fix MPI bug on SGI's
1861    o modifications for non-linear free-surface
1862    o fixed conditionals for fixed flow/passive tracer only mode
1863    o added tension/strain form of stress tensor
1864    o changes to commenting of arguments for TAF/TAMC
1865    o added/updated many matlab scripts
1866    o added multi-dimensional advection method for tracers
1867      
1868    checkpoint40pre8
1869    o new package rw/
1870      Added method for dumping intermediate local arrays:
1871      mdsio_writetile - same as mdsio_writefield except works from inside
1872                        bi,bj loop
1873      mdsio_writelocal - same as mdsio_writetile except works for local
1874                         arrays
1875      write_local_r? - higher-level wrapper for mdsio_writelocal
1876      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1877      Example given at end of mom_vecinv.F that dumps some local arrays.
1878    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1879      control flux-form versus vector invariant code.
1880      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1881      or genmake -DISABLE ...
1882    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1883      (additional storing is now needed for case vecinv;
1884      currently nothing implemented to switch this storing off
1885      in case fluxform is used since no CPP flag available).
1886    
1887    checkpoint40pre7
1888    o bug fix in dynamics.F
1889      calc_viscosity called before k=1,Nr loop.
1890    o added some #ifdef's ALLOW_PASSIVE_TRACER
1891    o cleaned initialisations in ctrl_map_ini
1892      related to TAF
1893    
1894    checkpoint40pre6
1895    o split dynamics into thermodynamics & dynamics
1896    o corresponding split of calc_diffusivity into
1897      calc_diffusivity, calc_viscosity
1898      (kpp_calc_diff, kpp_calc_visc).
1899    o Added diffkr, kapgm to control variables
1900    o bug fix in gmredi_slope_limit for ldd97
1901    
1902    checkpoint40pre5
1903    o proper initialization of Adams-Bashforth time stepping
1904      + uses forward step for very first step of model (iter=0)
1905    o re-generated *all* output since almost all output is modified by this
1906      change (sorry but we've been putting this one off for about 2 years)
1907      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1908        *not* regenerated since they are already out of date and I don't
1909        want to create the impression that they are suddenly working.
1910    o removed KAP stuff for DEC's
1911    o modified/added many .cvsignore files in */code and */input
1912    o added new expt "solid-body.cs-32x32x1"
1913      + this uses an alternative form of ini_curvilinear_grid.F which
1914        is not necessarily any better than the current one...
1915    
1916    checkpoint40pre4
1917    o added re-initialisations of utrans,vtrans,rtrans in
1918      calc_common_factors which are crucial for TAF.
1919    o extended iMin,jMin range for calc_common_factors,
1920      calc_diffusivity
1921    o added option ALLOW_PASSIVE_TRACER
1922    o a few minor updates and fixes
1923    
1924    checkpoint40pre3
1925    o created calc_gtr1.F for gad package
1926    o split the_main_loop and re-introduced forward_step
1927    o some recomputations of nIter0 for TAMC
1928    
1929    checkpoint40pre2
1930    o Updated to latest branch of AJA, JMC
1931    o Added gradient check package
1932    o Added routines for passive tracer handling
1933    o Added carbon sequestration sensitivity experiment
1934    
1935    checkpoint39
1936     o Modifications and fixes to support TAMC
1937       (mainly missing or wrong directives)
1938     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1939       in addummy_in_stepping
1940     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1941     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1942     o Included following packages:
1943       cal: calendar
1944       exf: external forcing
1945       ecco: essential routines to control use of cal, exf
1946             (NB: this is not the full ECCO environment)
1947     o disabled some packages by default in genmake
1948    
1949    checkpoint38
1950     o see notes_c37_adj.txt
1951     o corrected wrong layer index in external_forcing_t
1952     o replaced the_main_loop/forward_step by the_main_loop
1953     o removed forceoutput from write_state
1954       (replaced criteria for initial/final state)
1955     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1956    
1957    checkpoint37
1958     o mdsio.F routine split and packaged in pkg/mdsio
1959       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1960        used unless genmake -disable=mdsio)
1961     o allow a more precise surface-geopotential gradient for the atmosphere
1962       taking into account the change in space of Alpha (=1/rho) at the surface.
1963     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1964       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1965     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1966       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1967       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1968     o Time-Average diagnostics defined as a pseudo package "timeave".
1969     o pickup files : old pickup (before c35) did not work with new code (c35
1970       and after) unless activating 2 commented lines in initialise-varia.
1971     o Non-Hydrostatic pickup file Pb fixed.
1972     o bug with Rigid-lid version (since c35) fixed.  
1973    
1974    checkpoint36
1975     o implement Crank-Nickelson barotropic time-stepping
1976     o recover Time-Average diagnostics
1977     o fix Pb in checkpoint (PR#19)
1978     o AIM become a standard package ; clean unused CPP_kees
1979    
1980    checkpoint35
1981     o subtantial rewrite of dynamics.f
1982     o allows staggered time-stepping
1983     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1984     o added bottom drag (linear + quadratic)
1985    
1986    checkpoint34
1987     o Modified exchange routines for correct reverse simulation.
1988     o Added verification output to comply with bug fix in impldiff.F
1989       as of c33 (exp2, natl_box).
1990     o Corrected store directives in dynamics.F
1991     o Corrected array boundaries in impldiff.F
1992     o Corrected array dimensions in gmredi.
1993       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1994     o Added routine GLOBAL_SUM_INT to global_sum.F
1995     o Added mdsio_gl.F for ECCO purposes.
1996    
1997    checkpoint33
1998     o Fixed bug in lower BC in impldiff.F
1999     o Fixed confusion about units of forcing arrays in FFIELDS.h
2000       namely Fu,Fv,Qnet,Qsw,EmPmR:
2001       - Removed verification/natl_box/code/external_fields_scale.F
2002         (did not differ from that in model/src)
2003       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2004         (see FFIELDS.h for description)
2005       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2006         kpp_calc.F and kpp_transport_t.F
2007       - Removed model/src/external_fields_scale.F and calls to it
2008       - verification/natl_box uses flux data with "atmospheric" sign so
2009         a special version of external_fields_load.F is used to
2010         change the data as it's read in. This way, the arrays
2011         have the right units and signs at all times tha a user could
2012         possibly use them.
2013     o Corrected genmake to delete a temporary file during configuration
2014    
2015    checkpoint32
2016     o Scaling of forcing fields moved from external_forcing.F to
2017       external_fields_scale.F, called directly after loading fields.
2018     o Surface relaxation terms added to surface tendency fields in
2019       extra subroutine.
2020     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2021       fields.
2022     o Changes in GMRedi to comply with packaging structure.
2023     o Modifications and bug fixes in KPP package.
2024     o Verification experiment for KPP added (verification/nat_box/)
2025    
2026    checkpoint31
2027     o Packages interface brought in line with defined standard
2028       -> new routines packages_...F
2029       -> changes in initialise_fixed.F, initialise_varia.F
2030       -> enables initialisation interface for ECCO package
2031     o Rescaling of external forcing fields immediately after read
2032       (removed from external_forcing.F)
2033       -> new: surface_fields_scale.F
2034       -> affects ini_foorcing.F, external_fields_load.F
2035     o Computation of surface tendencies before tendency updates.
2036       -> new: external_forcing_surf.F
2037     o Change of variable names useGMRedi, useKPP, useECCO
2038     o Further changes in dynamics.F, impldiff.F for TAMC
2039     o Tested for experiments 0, 2, 4.
2040       - not yet tested for GMRedi.
2041       - not yet tested for KPP.
2042    
2043    checkpoint30
2044     o Updates for OBCs
2045     o New experiment for test OBCs (internal_wave)
2046     o New output.txt in verification/exp4/results/
2047     o Updates for KPP: calculation of viscosity corrected, new variables
2048       kpp_dumpFreq and kpp_taveFreq
2049     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2050       and entry for T90 in genmake
2051    
2052    checkpoint29
2053     o packaged KPP and GM/Redi
2054    
2055    checkpoint28
2056     o Corrected initialization of hFacMin for difference vertical coordinates
2057     o Modified calculation of partial cell thickness to more robust algorithm
2058     o config_summary.F: replaced write_1D_... by write_0D_...
2059       read_write.F: added subroutines write_0D_...
2060     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2061       included some initialisations required for TAMC.
2062     o routine calc_isoslopes: modified sqrt computation to make it
2063       differentiable for zero argument.
2064     o routines dynamics, impldiff:
2065       included store directives and tape key computations required for TAMC.
2066     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2067    
2068    checkpoint27
2069     o fixed calc_isoslopes() to so that cancellation of terms in tensor
2070       formulation works properly with variable resolution.
2071     o restructured the calling tree between the_model_main() and dynamics()
2072     o split initialise() into initialise_fixed() and initialise_varia()
2073     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
2074       in new routine ini_psurf()
2075    
2076    checkpoint26
2077     o moved some #ifdef in optional routines to encompass everything
2078       except the argument declarations. This was using up some memory.
2079     o fixed macros like _ADT to work with both versions of Linux cpp
2080     o cleaned up some unused and uninitialized variables
2081       (helps when debugging with strict compile options)
2082     o split up CPP_EEOPTIONS.h into options and macros
2083       (macros are now in eesupp/inc/CPP_EEMACROS.h)
2084     o patch for 2 processor JAM mode
2085    
2086    checkpoint25
2087     o updates for OBCs and NH
2088     o dramatically reduced memory usage
2089     o added "JAM" routines for use on Artic network
2090     o parameterization of convection by implicit vertical diffusion
2091     o added a diagnostic of convective index
2092     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
2093       (this is was partly for OBCs and NH but also in anticipation of
2094        an explicit free-surface option)
2095     o initial state input files for U and V
2096    
2097    checkpoint24
2098     o Removed some spurious "REAL"s
2099     o Updated KPP to latest version from JPL
2100     o Added a COS(latitude) in horizontal viscosity
2101    
2102    checkpoint23
2103     o Added del^4 diffusion for salt and temperature
2104     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
2105    
2106    checkpoint22
2107     o Made many small changes: implicit none, format(i5), etc...
2108     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
2109    
2110    checkpoint21
2111     o Introduced new I/O package that supports direct-access records (mdsio.F)
2112     o Split-up mid-level I/O routines
2113     o Updated input data for experiments 0,1,2,4 and 5
2114     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
2115    
2116    checkpoint20
2117     o Tidied up open-boundaries some more
2118     o Added non-hydrostatic code
2119     o Fixed some input data
2120     o Modified MPI start-up to work in "coupled" context.
2121    
2122    checkpoint19
2123     o Tidied up directory structure for verification experiments.
2124     o Added new code for open boundaries.
2125     o Corrected advective terms near boundaries.
2126     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
2127     o Implemented free-slip/no-slip BCs and del^4 dissipation.
2128     o Split default parameters out of ini_parms.F into set_defaults.F.
2129    
2130    checkpoint18
2131     o Further changes for optional code generation with
2132       CPP - ugh!
2133    
2134    checkpoint17
2135     o Beginning to incorporating modularity
2136       for supporting atmos. and ocean configs.
2137     o Small changes for TAMC complinace
2138     o New ultra simple test case. Barotropic box
2139       configuration "exp0".
2140    
2141    checkpoint16
2142     o Minor changes to exchange routines to support
2143       accumulation in reverse mode. Adjoint of an
2144       assignment is an addition.
2145     o Changes to support compilation by TAMC (LR(1)
2146       syntax) and by g77 under Linux ( 72 character
2147       limit ).
2148    
2149    checkpoint15
2150     Rewrote exchange routines to allow
2151     o General tile <-> tile connectivity.
2152     o TAMC reverse mode flag ( is this really needed? )
2153     o Variable width overlap and exchange region widths.
2154     o Hooks for sharing data via DMA, Arctic, Memory Channel,
2155       shmput/shmget, VIA, SYSV shmem and every other cool
2156       communication method.
2157    
2158    checkpoint14
2159     Consistent isomorphism chages made. These allow dynamical core
2160     to support both pressure and meters as a vertical coordinate.
2161    
2162    checkpoint13
2163     Release which corrects global_max problem and a couple
2164     of KGM time-averaging diagnostic errors. Also contains
2165     a double-gyre experiment setup as well as the baseline
2166     4 degree global template. The double gyre template is
2167     organised to allow it to be applied automatically to
2168     the baseline configuration.
2169    
2170    branch-point-rdot
2171     A few tidy-ups have been made bt the real point of this
2172     check-point (excuse the pun) is to allow a branch to be
2173     made for the purposes of adding the rDot alterations.
2174     I don't want to commit the rDot to the main-trunk until
2175     we've actually tested it...
2176    
2177    checkpoint12
2178     Tidy up and added generic genmake script (formerly
2179     configure script).
2180     Released to testers.
2181    
2182    checkpoint11
2183     Re-arranged initialise() and introduced ini_vertical_grid()
2184     and ini_masks_etc().
2185    
2186  checkpoint10  checkpoint10
2187   Introduced the configure script.   Introduced the configure script.
2188   Separated out the diags package.   Separated out the diags package.

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