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revision 1.7 by adcroft, Mon Jun 22 16:24:50 1998 UTC revision 1.416 by jmc, Fri Dec 17 00:52:42 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
7      this is based directly on what the model compute, so that the content of
8      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
9    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
10    o clean up build options files for SunOS, in particular
11      - remove -traditional from xmakedepend
12      - change -xarch=v9 to -xarch=native for f77
13      - restore use of make (not gmake)
14      - add CC=gcc if using g77
15    o changes per discussion of AM, JMC, & EH3 today:
16      - move redundant "grid" variables out of "state" -- in preparation of
17        creating proper CF-style coordinate variables and in recognition
18        that any/all grid variables can be easily copied (eg. w/NCO) from
19        the grid files into any of the other NetCDF files
20      - *always* output grid variables with MDSIO (this will eventually be
21        changed)
22      - output MNC grid file if useMNC is true
23    o every instance of _END_MASTER() has been found and replaced with
24      _END_MASTER( myThid ) in order to satisfy certain picky Sun
25      preprocessors
26    o re-arrange diagnostics pkg initialisation:
27     - allow each package to extend the available diagnostics list
28     - add some checking and fix small problems (multi-threaded, ...)
29     - new S/R diagnostics_fill (replace fill_diagnostics):
30       look through the short list of active diag. (instead of the long list)
31       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
32    
33    checkpoint57a_post
34    o this set of changes restores TAMC compatibility
35      tested for global_ocean.90x40x15 adjoint on trough
36      (what a pain)
37    
38    checkpoint57a_pre
39    o some modifs in tools/build_options for sunos
40    o call ctrl_pack for ctrl at end for optimcycle=0
41    
42    checkpoint57
43    o add horizontal bi-harmonic viscosity for vertical velocity
44      - new parameter viscA4W (defaults to viscA4)
45      - affects only non-hydrostatic code
46      - to be done: no-slip lateral boundary conditions
47    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
48    o implement Implicit Vertical advection for pTracers
49    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
50      (implemented also for implicit vertical diffusion & advection)
51    o OBCS: extend application of tracer open boundary conditions
52      to a strip beyond the boundary of width Olx/Oly
53    o add call monitor to TAF set of required calls (flow directives)
54      and include in natl_box_adjoint
55    o untangle a few ifdefs related to cost, ctrl, autodiff
56      untangel a few ALLOW_ECCO_OPTIMIZATION
57    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
58      (theta2, salt2 in ecco_cost_weights)
59    
60    checkpoint56c_post
61    o OBCS as control variables
62      - update ctrl_ad_diff.list, obcs_ad_diff.list
63      - remove balance of obcs controls from default
64      - fix index bug nobcs in ctrl_init
65      - fix dummy fields filen in ctrl_pack
66      - add dummy weights for obcs
67    o lsopt: comment out fort.94 output
68    o optim:
69      - remove unnecessary header files
70      - adjusted namelists
71      - add xerbla.F to Makefile
72    o exf:
73      - multiple modifications of exf_check_range
74      - unit change in exf_init_runoff from [m/year] to [m/s]
75    o mdsio:
76      - i/o-vector change debugLevel from debLevA to debLevB
77    
78    checkpoint56b_post
79    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
80      is called from DO_THE_MODEL_IO
81      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
82      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
83      - clean up PTRACERS_WRITE_TIMEAVE a little
84    o add another verification experiment that tests both the cfc-pkg and
85      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
86      reactive tendencies treated inline with regular timestepping
87    o testreport previously did a lousy job of comparing small numbers, so
88      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
89      implemented in the little c-progam tmp_cmpnum.c which is embedded in
90      testreport.
91    o ptracers_monitor: bug fix for MPI
92    
93    checkpoint56a_post
94    o GCHEM: finish reorganizating the package
95      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
96        (introduces another 3D-array for each passive tracer, but only if
97        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
98        gchemTendency is not needed because the timestep is done separately)
99      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
100      - GCHEM is now---more or less cleanly---separate from PTRACERS
101      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
102        so clear to me how that should be done in a general way.
103    o CFC: improve formatting of output in CFC_ATMOS
104    o PTRACERS:
105      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
106        that ALL experiments with ptracers enable can be checked. This makes
107        GCHEM_MONITOR obsolete.
108      - include a runtime parameter PTRACERS_monitorFreq that defaults to
109        monitorFreq
110      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
111    o add PTRACERS (PTR0[1-5]) to testreport output
112    o exf_check_range:
113      * default changed to .TRUE.
114      * will check values for niter0 if debLevA, every timestep if debLevB
115      * STOP in exf_check_range if 'out of range'
116      * range chosen generous to allow for potential extema
117      TBD: a version with stricter range
118           permitted range would be runtime parameters
119    o GMredi:
120      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
121      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
122      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
123    o GCHEM:
124      - move call to GCHEM_FORCING_SEP, so that it is now called before
125        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
126      - introduced a useGCHEM runtime flag and applied it everywhere.
127      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
128        this flag is now only visible within GCHEM-pkg routines.
129      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
130        be replaced by a 3D array that is computed before thermodynamics; for
131        this, the tracer ID iTracer had to be included into the parameter list
132        of ptracers_forcing
133      - set up forward_step to call gchem_forcing, that will replace
134        gchem_forcing_int in ptracers_forcing
135      - cleaning up
136    o small cleaning of exch2: remove files that are also in eesupp/src
137    
138    checkpoint56
139    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
140    o mnc: cleanup "full" files--fixes out-of-memory problem
141    o ECCO-GODAE
142      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
143      * fully merged and updated from SIO code
144        windstress sign change affects
145        - exf_inscal_[u/v]stress
146        - sign of xx_tau[u/v] adjustments
147        - signs in cost_scat
148      * ctrl_get_gen: avoid update of tau[u/v] for first few days
149      * natl_box_adjoint updated and compressed
150      * 2-level checkpoint switch added
151        (tested in EXP. 1 of natl_box_adjoint)
152      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
153    o SVD
154      * first complete, non-hacked version for SVD calculations
155      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
156        performed via direct access files admtlm_vector.it????
157        (via ctrl_[un]pack)
158      * optimcycle is used for ARPACK iteration counter
159        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
160      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
161        and add linear transforms where necessary
162      * controls are initial/final SST, SSS (can be extended; need to check
163        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
164    o mdsio: filename info to both stderr, stdout
165    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
166      from sign change
167    
168    checkpoint55j_post
169    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
170      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
171    o add consistent build directories and .cvsignore files to verification
172    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
173    o make all subroutines 30 or less characters in length for certain older
174      compilers to work (a thorough search only turns up two routines in
175      pkg/ptracers)
176    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
177      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
178    
179    checkpoint55i_post
180    o change arrays for total vertical diffusivity (2.D if explicit,
181      3.D if implicit) ; each ptracer uses its own background value.
182    o added mnc/NetCDF output capability to ocn_compon_interf
183      - added bits to verification/cpl_aim+ocn so that it can run on
184        ITRDA and other clusters without the mpirun "-wd" option
185    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
186      configuration
187    o give MNC the ability to create additional files rather than
188      exceeding a specified file size limit "MNC_MAX_FILESIZE"
189      - the default is just less than 2GB which is a practical limit
190        on many systems
191    o Compute the non-local term using either KPP vertical diffusivity (=default)
192       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
193    
194    checkpoint55h_post
195    o add verification test "vermix"
196    o remove all the *_ioinc flags and replace with the single global
197      outputTypesInclusive flag
198    o allow to set a vertical profile of vertical diffusivity for T & S
199    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
200    o useMNC moved from data.mnc to data.pkg
201    
202    checkpoint55g_post
203    o Renaming carbon AD experiments to comply with testreport conventions
204    o Updating adjoint of Held-Suarez hs94.1x64x5
205    o Fixing directives for non-ECCO forward_step, after ECCO directives
206      have been fixed to avoid recomp. of do_oceanic_phys
207      Works well for global_ocean.90x40x15,
208      but recomp. issue remains for carbon
209    o Updating adjoint output for natl_box_adjoint after
210      pkg/ecco has been modified (see taga c55d_post)
211    
212    checkpoint55f_post
213    o rename to timeave_init_fixed
214    
215    checkpoint55e_post
216    o some delicate re-shuffle of store directives to avoid one
217      extra call of do_oceanic_physics
218      affects ecco_the_main_loop.F, do_oceanic_physics.F
219      checkpoint_lev1_directives.h
220    o NB: this may break global_ocean adjoint temporarily,
221      but it is clear how to fix it. Will do later, need this now.
222    
223    checkpoint55d_post
224    o ECCO specific cost function terms (up-to-date with 1x1 runs)
225    o ecco_cost_weights is modified to 1x1 runs
226    o modifs to allow observations to be read in as
227      single file or yearly files
228    o enable to read exf forcing fields as either
229      single file or yearly files (flag useExfYearlyFields)
230    checkpoint55d_pre
231    
232    o switch between 2-level and 3-level checkpointing
233    o add ability of MNC to write local and "partial" (eg. 2D slices where
234      the full 3D field is never actually stored) arrays to NetCDF files
235      with the correct (that is, the complete multi-dimensional) set of
236      array indicies
237      - used in mom_vecinv() to write the diagFreq output
238      - tested (demonstrated) in verification/aim.5l_cs
239    o further mnc-ification
240      - add verification/lab_sea to the list with mnc setups
241      - fix undefined mnc v-names in cd_code
242      - add kpp to mnc output (both snapshot and timeave)
243    o non-hydrostatic code
244      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
245        in calc_gw.F
246      - defaults to viscAh
247      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
248        friction or Leith) in non-hydrostatic mode, as long as there is
249        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
250    o pkg/cost
251      extend simple cost functions to treat time mean quantities
252      (T,U,V) via cost_accumulate_state from cost_tile
253    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
254        be 2 times larger than the minimum size the advection scheme requires.
255        now get a perfect conservation of salt in advect_cs test-exp (updated)
256    o GGL90 (Gaspar's TKE mixed layer)
257      - add horizontal diffusion of TKE, requires exchanges in
258        do_fields_blocking_exchanges, horizontal diffusivity is zero by
259        default. In OPA there is no horizontal diffusion of TKE but the
260        mixing coefficients are computed from a horizontal average of TKE of
261        6 points or so. I think that diffusion has a little more physical
262        justification.
263      - clean up ggl90_calc in the hope of reducing memory usage (this hope
264        was in vain)
265      - mask tke-variable in ggl90_init
266    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
267    o fix biharmonic diffusion on CS-grid.
268    o more obcs stuff
269      - added obcs_external_fields_load as an alternative to the EXF-pkg option
270        for reading boundary values. This routine is called from
271        obcs_prescribe_read
272      - updated obcs_check
273      - changed sponge layer relaxation parameter units for days to seconds
274      - turned off sponge layer by default
275      - changed argument list of OBCS_CALC to myTime+deltaTclock
276      - fixed about 35 bugs in obcs_external_fields_load
277    
278    checkpoint55c_post
279    o obcs stuff
280      - new runtime flags useOBCSprescribe, useOBCSbalance
281      - re-arranged obcs_calc
282      - moved exf_getobcs to obcs_prescibe_read
283        obcs_prescibe_read is called after ORLANSKI stuff
284        and independent of it (executable can contain all).
285      - updated obcs_check
286      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
287        These may be necessary only if tangential velocities are
288        prescribed at OB, not sure, needs testing.
289    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
290      which simplifies the calls and passes the ifc check-bounds test
291    
292    checkpoint55b_post
293    o add a 2D scalar, Z location, exchange_2 routine.
294    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
295      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
296      affects advect_cs results (for the wrong reason): update output.txt
297    o use a more standard discretization for biharmonic viscosity ;
298     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
299      affects results of dome set-up: update output.txt
300    o fix gad_advection.F (CubedSphere part), back to version 1.23
301    o fix bug in mom_vi_del2uv.F (CubedSphere part).
302    
303    checkpoint55a_post
304    o merged code to
305      * prescribe/read time-dependent open boundaries
306        (works in conjunction with exf, cal)
307      * sponge layer code for open boundaries
308      * each boundary N/S/E/W now has its own CPP option
309        (healthy for the adjoint)
310    
311    checkpoint55
312    o up-to-date adjoint of previous breaks
313      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
314      - global_ocean_ebm: adjoint still needs fix (TLM ok)
315      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
316      - carbon: * remove tr1-related adjoint verification
317                * add ptracer as control variable
318    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
319      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
320    
321    checkpoint54f_post
322    o in verification/carbin/ remove experiment related to
323      ALLOW_PASSIVE_TRACER (array tr1 etc)
324      code_ad/ input_ad/ results_ad
325    
326    o add two new packages
327      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
328        + subject to optimization (memory)
329      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
330        + subject to reordering (many GOTOs in the original code)
331        + so far opps is called for every (i,j) point, and then operates in
332          the vertical; one may want to reorder the scheme in order operate in
333          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
334          fields)
335    o overhaul of IO so that we now have flags for MDSIO and/or MNC
336      - all verification tests compile and run with linux_ia32_g77
337      - defaults are compatible with current input files--nothing
338        should change if you were not previously using MNC
339      - MNC output has been added in numerous places (eg. timeave)
340        but there are still a few writes not yet do-able with MNC
341        (this is in progress)
342      - flags now allow for either/or/both use of MDSIO and MNC and
343        documentation will soon follow
344      - numerous small formatting cleanups for ProTeX
345    o add version info (via BUILD_INFO.h) to MNC and stdout
346    
347    checkpoint54e_post
348    o add two new packages
349      - pp81 (Packanowski and Philander, 1981), Richardson number and
350        stratification dependent mixing
351      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
352      - these scheme operate in a similar manner as KPP (without ghat, of
353        course), however there is only one diffusivity that is used for both
354        temperature and salinity (and passive tracers)ç
355    o add offline package
356    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
357      provided by Stephanie Dutkiewicz
358    o genmake2: add ability to search for C compilers and cleanup test output
359      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
360    
361    checkpoint54d_post
362    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
363    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
364      leading to additional shift by 5 days each year of integration
365       (i.e. leading to considerable offset over the years)
366    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
367    o start with no AB and no initial filtering (staggerTimeStep):
368      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
369    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
370      (external loading & cpl import/export stay in forward_step.F)
371    o update coupling interface to work with new staggerTimeStep
372    o change MDSIO ptracers_pickup.
373    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
374    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
375    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
376    
377    checkpoint54c_post
378    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
379      this affects (truncation error) output.txt of test-exp:
380       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
381    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
382    o change Qnet to always be the net heat flux, (+upward).
383      affects (truncation error) output of natl_box exp.: updated
384    o define the max number of passive tracers in PTRACERS_SIZE.h
385    o start to test mnc routinely in exp0
386    o add sea-ice loading (sIceLoad) as a new forcing field.
387    
388    checkpoint54b_post
389    o add testreport "-j JOBS" option for parallel builds (tested and pretty
390       impressive on Altix and Opteron systems)
391    o diagnostics can now write NetCDF files through the mnc package
392    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
393    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
394    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
395      affects (truncation error) output of lab_sea & natl_box exp.: updated
396    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
397    
398    checkpoint54a_post
399    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
400    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
401    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
402    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
403      + internal_wave (shift in writing cg2d_ini_res)
404    checkpoint54a_pre
405    
406    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
407      - modified verification/lab_sea and natl_box_adjoint accordingly
408    
409    checkpoint54
410    checkpoint53g_post
411    o prepare splitting of thermodynamics: store convect.counter in common block
412    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
413      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
414    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
415    o new parameter "nShapS": allow to treat differently S from T (nShapT)
416    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
417    o restore adjointability
418    
419    checkpoint53f_post
420    o modifications that affect AIM experiment results (update output.txt):
421      - no advection of S at top interface Nr (pkg/generic_advdiff)
422      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
423    o AIM pkg:
424      - include stability function into surf.Flux derivative relative to Tsurf
425      - calculate clear-sky radiation & surface temp. change (for diagnostics)
426    
427    checkpoint53e_post
428    o merged cylindrical coord configuration
429    o added rotating_tank experiment
430    checkpoint53e_pre
431    
432    checkpoint53d_post
433    o faulks upgraded: re-generate output.txt that have changed:
434       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
435    o Added Bryan and Lewis, 1979, vertical diffusivity profile
436    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
437    o added Sadourny discretization of Coriolis
438      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
439      - re-enabled use of omega3 (useAbsVorticity)
440    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
441      vector-invariant equations
442      - note: does *NOT* yet use same variable visc. for no-slip BC's.
443    o recoded the lateral boundary conditions for non-hydrostatic w, this time
444      hopefully without new bugs
445      - still to do: biharmonic friction for non-hydrostatic w
446    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
447    o regenerated output for global_ocean_ebm (using -ieee)
448    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
449      of mom_common/
450      - simple re-arrangement of instructions within computing loop
451    checkpoint53d_pre
452    
453    checkpoint53c_post
454    o new version of coupler for AIM+thSIce and Ocean models
455     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
456     - land: change Evaporation of snow
457     - aim with thSIce: fix bug in snow-precip.
458    o changes to calc_gw.F
459     - bug fix for w^2 term near the bottom boundary
460     - (hopefully) improve the lateral slip boundary condtions for use with
461        partial/looped cells
462      - because the bug fix changes two verification experiments anyway (exp5
463        and plume on slope), change the lateral boundary condition from half slip
464        to the value of no_slip_sides
465    o ebm package wasnt quite up to the parallel task. Fixed that.
466    o Adjoint of EBM package + verification
467      * TLM OK
468      * ADM not sufficient accuracy yet (needs further testing)
469    
470    checkpoint53b_post
471    o Commiting new energy balance model to repository
472      * package is pkg/ebm
473      * verif. is verification/global_ocean_ebm
474      * references are in ebm_driver.F
475    C      * X. Wang, P. Stone and J. Marotzke, 1999:
476    C        Global thermohaline circulation. Part I:
477    C        Sensitivity to atmospheric moisture transport.
478    C        J. Climate 12(1), 71-82
479    C      * X. Wang, P. Stone and J. Marotzke, 1999:
480    C        Global thermohaline circulation. Part II:
481    C        Sensitivity with interactive transport.
482    C        J. Climate 12(1), 83-91
483    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
484    C        Destabilization of the thermohaline circulation
485    C        by atmospheric eddy transports.
486    C        J. Climate 7(12), 1870-1882
487    o Will need long integration testing.
488    checkpoint53b_pre
489    
490    o created pkg/mom_common in preparation for variable viscosity code
491    o renamed and split ini_mnc_io
492    o pkg/land: only liquid water can diffuse or run-off
493    o AIM using land: soil wetness availability account for snow
494    o added printMapIncludesZeros to EEPARMS namelist
495    
496    checkpoint53a_post
497    o restore TAMC compatiility for exf_constants.h
498      (no usage of _d in .h)
499    o Additional storing in KPP in an attempt to fix
500      TAMC problem with adjoint of KPP code.
501      (no success...)
502      Identical code works fine with TAF.
503    o Fixed verification/natl_box_adjoint experiments.
504      Initial conditions for Experiments 4 and 5 are now
505      set to "SEAICE_initialHEFF=0", which is more reasonable,
506      and hence gives results closer to that of Experiment 2.
507      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
508    
509    checkpoint53
510    o stable checkpoint with up to date adjoint
511      TLM tests only run for 1st grdchk at the moment. Its unclear if
512      this is a code problem or a problem with resetting code for g_
513      variables that is being autogenerated wrong.
514      Otherwise:
515       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
516       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
517         are both still in chaos following their security messes.
518    
519    checkpoint52n_post
520    o various build (mostly genmake2) changes including:
521      - ability to build/run more easily within Cygwin and MacOS X
522      - more complicated Makefiles with a stronger dependence on Gnu Make
523    o pkg/seaice modifications
524      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
525        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
526        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
527      - changed proxy for geostrophic velocity and updated
528        verification/lab_sea/results/* accordingly
529      - removed ADI dynamic solver from pkg/seaice
530      - replaced all occurrences of 1/CSTICE or 1/CSUICE
531        they caused a segmentation fault under certain circumstances
532      - removed unused field WATR
533    o bug fix in exf-package:
534      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
535         now reflect that.
536    o small fixes in the cal-package:
537      - set reference date to first of January for the 'model'-calendar
538      - failing of cal_CheckDate in cal_FullDate now actually results in a
539        warning
540    o small modifications in exf-package to increase flexibility:
541      - change climtempfreeze from a constant to a runtime parameter that
542        is specified in data.exf_clim (default = -1.9)
543      - introduce runtime parameter windstressmax (default = 2.0) that is
544        specified in data.exf
545    o fix in pkg/thsice:
546      - update Evap (Tsf changes) to be consistent with Latent heat flux
547      - maintain snow precipitation unchanged (even if Tsf >=0).
548     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
549    
550    checkpoint52m_post
551    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
552      this does not change any of the results, because myIter=0 in swfrac always
553      lead to jwtype=2 (the default anyway), but the call makes little sense
554      as a default
555    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
556    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
557      atmospheric model (AIM) to use it ; add a "slab ocean" component.
558    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
559    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
560    o extending useSingleCpuIO option to work with new exch2 I/O format
561      - old-style, missing-tile I/O is still accessible by defining CPP
562        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
563    o monitor package can write to NetCDF files and/or STDOUT
564    o fix re-definition bug in MNC_GRID_INIT_ALL()
565    o doc/api_reference added
566      - a framework for building an API Reference Manual using all
567        the "protex" comments embedded in the code
568      - see pkg/generic_advdiff, pkg/mnc for examples
569    o MNC:
570      - make myThid the last argument for all subroutines
571      - new default for the grid files: NO halos
572      - add useMNC and other run-time flags
573      - separate per-file-group handling of the unlimited dimension
574      - early initialization of MNC w/ flags read at the eeboot stage
575        and lookup tables set in initialize_fixed
576      - write all MNC output to a freshly-created directory
577    o thermodynamics sea-ice (thsice) is now tested with testreport.
578    o test exp. advect_cs: use the standard cs32 grid ; update output.
579    o Added functionality to grdchk:
580      pick global i,j,k position (or nearest wet) where to perform check.
581    
582    checkpoint52l_post
583    o new land formulation:
584      a) use ground enthalpy as prognostic variable to ensure exact
585         energy conservation.
586      b) account for water temperature and for latent heat of freezing
587         in all processes (rain, run-off, ground storage)
588      c) compute surface and ground temperature implicitly.
589    o aim_v23 modification for new land model:
590      a) Treat separately land / ocean / sea-ice surface fluxes
591         to allow implicit computation of land & sea-ice surface temp.
592      b) add snow precipitation.
593    checkpoint52l_pre
594    
595    o fix problem (when 1 tile is empty) in min/max monitor.
596    o fix bug in timeAve (u,vZetatave in common block)
597    o no restoring terms under ice for pkg/seaice
598    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
599    o bug fix for pkg/seaice pickups
600    o change MNC call locations and add coordinate attributes
601    o mask vorticity at the corner ; affects global_ocean.cs output
602    o fix ini_curvilinear_grid ; test CS experiments with mpi
603    o aim.5l_cs: modify sea-ice fraction input file ; update output
604    o exf: Adding simple range check routine for exf fields after read
605    
606    checkpoint52k_post
607    o removed top-level directory "diags"
608      - we migrated these functions to pkg/timeave a long time ago
609    o fixed bug introduced in pkg/monitor
610    o accuracy ctrlprec = 32 insuffient for gradient checks using
611      averaged fields (I/O via cost_averages)
612      -> use ctrl.h in active_file*.F to control I/O precision.
613    o paramter list of CALL ADTHE_MAIN_LOOP
614    o added initial do_the_model_io to ecco
615    o set all ...Freq to zero after cost_final
616      taveFreq, dumpFreq, pChkptFreq
617    o MAIN and ECCO differentiability restored
618    
619    checkpoint52j_post
620    o fix nchklev in tamc.h for global_ocean...
621    o Bringing flow and store directives up-to-date
622    o Really weird thing!
623      call do_the_model_io from the_main_loop with parameters
624      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
625      TAF places a faulty re-call of initialise_varia
626      after cost_final call which should not be there!
627    checkpoint52j_pre
628    
629    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
630      error messages
631    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
632    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
633      debug output
634    o modfied mdsio_writefield.F to handle non-global files under exch2
635    o update AIM Cubed-Sphere exp (aim.5l_cs):
636      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
637    o update AIM Equatorial Channel exp:
638      use standard aim_v23 pkg and change the SST fields to be more realistic.
639    o globalFile now works with exch2
640    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
641      mon_vort3.F to make exch2 friendly with >1 tile per cube face
642    o limit timeave output for hi-res integrations
643    
644    checkpoint52i_post
645    o removed CPP_EEOPTIONS.h from verification/*/code
646    o updated the tiling for global_ocean_pressure
647    checkpoint52i_pre
648    
649    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
650      the old pkg/aim).
651    
652    checkpoint52h_pre
653    o shortened offending lines in exch2_send_rx?.template
654    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
655    o genmake2: add build & execute test for NetCDF code
656    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
657      old grid files, moved CPP_EEMACROS.h to pkg/exch2
658    o added useSingleCPUIO flag to monitor.F and mon_out.F
659    o added temporary hack for sea-ice dynamics on the cube:
660      metric terms are ignored and it is assumed that
661      there is no sea-ice on cube faces 1, 2, 4, and 5.
662    
663    checkpoint52f_post
664    o added exch2 cube routines to pkg/exch2
665    o modified hs94.cs-32x32x5 to use it
666    o added new grid files to hs94.cs-32x32x5
667    checkpoint52f_pre
668    
669    checkpoint52e_post
670    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
671      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
672    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
673      to work with implicit vertical advection and AB ;
674    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
675    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
676     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
677    checkpoint52e_pre
678    
679    o fix bug in impldiff when Nr=1 or Nr=2.
680    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
681    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
682    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
683      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
684    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
685    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
686    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
687    
688    checkpoint52d_post
689    o re-tiled many expts to allow comparison in multi-processor mode
690      - updated output accordingly
691      - changed hs94.128x64x5 to use intial T from file rather than use the
692        random number generator
693    o add infrastructure in model routines for fizhi and gridalt packages
694    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
695    o changes to permit hi-res, cubed-sphere, configuration
696      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
697      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
698      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
699        of surface winds for the cube
700      (A verification experiment, based on global_ocean.cs32x15, but with
701       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
702       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
703       complete with example surface forcing files and matlab scripts to look
704       at the output and compare it with that of global_ocean.cs32x15.)
705    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
706       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
707       to conform to the common rule.
708    o check-in the first version of the coupler + interfaces for multi-components
709       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
710       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
711       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
712       - ocean and atmos. share the same horizontal grid (no interpolation).
713       - exchanges between component and coupler is done in forward_step
714    o new verification experiment, cpl_aim+ocn:
715       coupled ocean - AIM atmosphere on cs32 grid.
716    
717    checkpoint52d_pre
718    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
719    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
720    
721    checkpoint52c_post
722    o Fixing OPTIONS files for use of exf:
723      - ALLOW_ECCO not needed
724      - ECCO_CPPOPTIONS.h should not be included from
725        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
726        as has been the case in the past
727      - All cal/exf related options are currently set in
728        single header file. Should remain so until we
729        agree on a consistent new policy.
730    o Removed all CPP options for cal package.
731      cal has no more CPP options.
732    o modified STOREs in GAD_ADVECTION
733    o corrected key comp. for passkey
734    
735    checkpoint52b_post
736    o new version: "thsice" of thermodynamic sea-ice pkg:
737     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
738     - modify fluxes but do not change theta directly;
739     - light cleaning of bulk_force pkg (still needed with thsice).
740     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
741       + output_thsice.txt to test thsice & bulk_force pkgs.
742    o put back grid & coriolis monitor output.
743    checkpoint52b_pre
744    
745    o call "do_the_model_io" at the beginning (=> dump initial state)
746    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
747    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
748      (need info on NUMBER_OF_PTRACERS)
749    o missing PTRACERS headers in some routines
750    o default tamc.h in pkg/autodiff supposed to crash
751      to ensure proper customization
752    
753    checkpoint52a_post
754    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
755      - moved surfaceTendencyTice from pkg/seaice to main code
756      - subroutine FREEZE_SURFACE now limits only surface temperature
757        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
758        => new output.txt for global_ocean.cs32x15 & global_with_exf
759      - keep the old version of FREEZE for backward compatibility;
760        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
761      - corresponding modifs for TAF directives
762    o added surface flux output variables to TIMEAVE_STATVARS
763    o time-averaged output for pkg/ptracers
764    o fix problem with ECCO-related divided adjoint
765      snapshot file was missing some ad-variables,
766      but no warning issued by TAF
767    
768    checkpoint52a_pre
769    o some bug fixes for #undef REAL4_IS_SLOW
770    
771    checkpoint52 = ecco_c52_e35
772    o after testing adjoints of checkpoint51u_post
773    
774    checkpoint51u_post
775    o this is the post-merge tag of the ecco-branch
776      (needs another clean checkout and re-testing)
777    o various natl_box_adjoint configs and results
778      but no input fields
779    o obcs adjoint not yet merged!
780    o adding ECCO global 1x1 and 2x2 degree configs
781    o updated/extended some store directives for seaice
782    o pkg/ecco now containes ecco-specific part of cost function
783    o top level routines the_main_loop, forward_step
784      supersede those in model/src/
785      previous input data.cost now in data.ecco
786      (new namelist ecco_cost_nml)
787    o in ctrl/ cleaned some cross-dependencies and updated CPP options
788    
789    checkpoint51t_post
790    o this is the pre-merge tag of the ecco-branch
791    
792    checkpoint51s_post
793    o cleanup: removed various obsolete #define-s
794    o pkg/grdchk
795      - renamed 'ph-grd 3' to 'grad-res'
796      - merged from ecco-branch
797        (remaining bug fixes for obcs gradient checks)
798      - additional high-precision output for testreport
799        (grep for 'precision_grdchk_result')
800    
801    checkpoint51r_post
802    o cleaned up or removed CPP_OPTIONS.h files
803    o updated results for some of the tests to reflect the new
804      optfiles (-ieee: -O0 instead of -O3)
805    
806    checkpoint51q_post
807    o cd_code:
808      - moved cd_scheme.F -> cd_code_scheme.F
809      - separate read_checkpoint from cd_code_ini_vars.F
810      - separated cd_code part from write_checkpoint
811      - updated AD_SOURCE, generated .flow
812      - added CD_CODE_VARS.h to the_main_loop
813      - Moving cd_code specific store dir.s to pkg/cd_code
814    o ctrl package totally restructured
815      - pack/unpack now optional and decoupled from
816        xx_/adxx_ I/O
817      - ctrl_pack/unpack cleaned
818        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
819      - confined inclusion of AD_CONFIG.h to where necessary.
820    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
821    
822    checkpoint51p_post
823    o create initial cd_code package
824      - WARNING: the initialization of fields within packages
825        is broken because INI_FIELDS (where READ_CHECKPOINT is
826        called) is called *before* PACKAGES_INIT_VARIABLES.
827        This seems to be backwards since
828        1) its important to initially zero the entire field including
829           the "halo" region
830        2) zeroing needs to be done *before* reading pickup info
831           and the pickup call might or might not happen in any
832           particular run
833      - this needs an overhaul for R2
834    o cleanup verification/*/code/GMREDI_OPTIONS.h
835    o cleanup testreport
836    
837    checkpoint51o_post
838    o bringing AD-related verif's up to date with genmake2
839      - carbon/
840      - global_ocean.90x40x15/
841      - hs.94.1x64x5/
842      - (front_relax/ )
843    o (more) consistent directory structure for AD-related verif.'s
844    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
845    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
846    o bug fix in find_alpha.F for MDJWF:
847      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
848        change rho -> rho-rhoConst
849      - replace call find_rho to find_rhonum
850    o initialisation of rFlx extended to full array (required by TAF)
851      and shifted to thermodynamics
852    o removed PTRACERS.h in ptracers routine
853    o added surfacetendencyPtr to S/R parameter list pracers_forcing
854    o Correcting initialisations for fVerU, fVerV.
855    o helping TAF to recognize dependency on kUp for
856      fVerU, fVerV
857    o Replacing delZ by delR in pkg/ctrl/
858    checkpoint51o_pre
859    
860    o undid all of cp51 pending some cleanups and discussion
861    o added the [#include "AD_CONFIG.h"] statement to all files that need
862       it for adjoint/tl #defines
863     o re-worked the build logic in genmake2 to support AD_CONFIG.h
864     o removed tools/genmake since it no longer works
865    
866    checkpoint51n_post
867    o modifications to make FREEZE flux visible to pkg/kpp
868      - moved surfaceTendencyTice from pkg/seaice to main code
869      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
870      - subroutine FREEZE now limits only surface temperature
871        (this means new output.txt for global_ocean.90x40x15,
872         global_ocean.cs32x15, and global_with_exf)
873    o added surface flux output variables to TIMEAVE_STATVARS
874    
875    checkpoint51n_pre
876    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
877    o added [#include "AD_CONFIG.h"] to all files that use the following
878      defines:
879      - ALLOW_ADJOINT_RUN
880      - ALLOW_TANGENTLINEAR_RUN
881      - ALLOW_ECCO_OPTIMIZATION
882    
883    checkpoint51m_post
884    o incorporating changes to get TAMC/TAF working in genmake2
885      - added new TAMC/TAF targets to the Makefile
886      - various cleanups related to package handling
887      - these changes should have no impact on the forward model
888    
889    checkpoint51l_post
890    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
891     - faster algorithm for cal_addtime.F
892     - higher precision arithmetic, where needed
893     - pkg/exf *startdate variables changed from calendar date to
894       model integration time
895    
896    checkpoint51l_pre
897    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
898    o enable to apply restoring on S & T only in a latitude band.
899    o update output (external_forcing_surf modif. change truncation errors)
900       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
901    
902    checkpoint51k_post
903    o change default to: useNHMTerms=.FALSE.
904     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
905       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
906     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
907        exp1, ideal_2D_oce
908     - change data file of oceanic exp (leave the results unchanged for now)
909       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
910    o set gravitySign automatically according to the vertical coordinate used
911      (and change sign: back to "logical" value: +1 when R increases downward)
912    o added an include barrier to the default CPP_OPTIONS.h and
913      removed the #include "PACKAGES_CONFIG.h" from it
914    o fix a bug in mom_fluxform (from chk51j_post)
915    
916    checkpoint51j_post
917    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
918    o adjusted some flow directives (dynamics, thermodynamics)
919    o added cubed-sphere case to test cost function
920    o heckpoint_lev?_directives.h now include
921      pkg-specific directives, whenever those are enabled.
922    o Moving pkg-specific flow directives to corresponding pkg
923      Moving pkg-specific differentiation list to corresponding pkg
924      Moving pkg-specific checkpoint-lev storing to corresponding pkg
925      ---> conventions are
926           - pkg_ad.flow
927           - pkg_ad_diff.list
928           - pkg_ad_check_lev?_dir.h
929    
930    checkpoint51i_post
931    o merge of the branch-genmake2
932      - knowingly breaks the older genmake
933      - automatic generation of all ALLOW_${PKG_NAME} defines
934      - new testreport supersedes older testscript
935    o large number of package inclusion and header cleanups
936    checkpoint51i_pre
937    
938    o new output for adjoin of global ocean vector invariant
939    o fix for checkpoint of thermodynamic seaice and bulk_force
940    o Steph gchem various cleanups
941    
942    checkpoint 51h_pre
943    o fixed some single quotes
944    o modify gchem pkg to be more versatile
945    o modifications to clean up dic pkg
946    o add pkg/cfc
947    
948    checkpoint51g_post
949    o provide links for ARPACK and ADM*TLM
950    o start removing verification/vero/
951    o update AD-related stuff
952      (in particular some IF-statements in model/src/ routines)
953    o adding to verification/global_ocean.90x40x15/ adjoint of
954      vector invariant setup
955    
956    checkpoint51f_post
957    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
958    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
959      of tracer Green's fucntions for ocean inversion project.
960    
961    checkpoint51f_pre
962    o Added on-the-fly spatial interpolation capability
963        "USE_EXF_INTERPOLATION" to pkg/exf.
964      - This is a temporary Cartesian-grid hack until
965        the super-duper ESMF coupler becomes available.
966      - See verification/global_with_exf/README for usage example.
967      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
968        flags and modified pkg/seaice accordingly.
969    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
970        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
971        non-local transport term.
972    
973    checkpoint51e_post
974    o pkg/mom_vecinv:
975      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
976      - add time-ave diagnostic of vorticity advection.
977    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
978    o atmospheric geopotential: - include water vapor effect;
979                                - use p^kappa in p* scaling.
980    o land pkg: read initial state from files.
981    o AIM : add stratospheric drag in the upper level
982    
983    checkpoint51d_post
984    o change function ILNBLNK (=> last non-blank char.) to return zero
985      (instead of the string length) when the string. char is empty
986    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
987    o modif's to restore TAMC compatibility
988      - avoid "_d" constructs in PARAMETER declarations
989      - avoid interrupting lines by comment lines
990    o Use cluster local disks for purely local I/O
991      vs. globally visible disks needed for ctrl stuff
992      (merged from ecco-branch)
993      - new active_file_loc... and mdsio_..._loc routines
994      - affected packages: autodiff, ctrl, grdchk, mdsio
995    
996    checkpoint51c_post
997    o introducing integer flag debugLevel
998      - debLevZero: suppress all output
999      - debLevA: standard
1000      - debLevB: equivalent to current debugMode=.TRUE.
1001    o introducing pathname variable mdsioLocalDir for mdsio
1002      that can be specified at runtime
1003      (relevant for cluster I/O to local disk)
1004    `
1005    >>>checkpoint51b_post
1006    adjoint of ptracers
1007    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1008    o extended state in checkpoint_lev?, etc.
1009    o alternative ctrl/cost with tr1 or ptracer
1010    o new comlev1_bibj_ptracers
1011    o new ptracers.flow
1012    o made ptracers_forcing same as external_forcing_s
1013    o added verification for adjoint with ptracers
1014      - adm. grdchk fail so far
1015      - tlm. grdchk OK
1016      - checked tapelev/comlev recomputations: OK
1017    <<<checkpoint51b_pre
1018    
1019    checkpoint51a_post
1020    o added code for biogeochemistry package
1021      - new pkgs: dic, gchem
1022      - new subroutine in ptracers
1023    o modify code for biogeo packages
1024      - in model/src and pkg/ptracers
1025    
1026    checkpoint51
1027    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1028      - autodiff, ctrl, exf, grdchk, seaice
1029      kept separate packages
1030      - cost, ecco, obcs
1031    o updating verification/internal_wave, verification/lab_sea
1032      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1033    
1034    checkpoint50i_post
1035    o Preparing next differentiable checkpoint and sync
1036      of MAIN vs. ecco-branch
1037      - 1st step: this one is differentiable
1038      - 2nd step: next(! not this) checkpoint will have updated packages
1039                  from ecco-branch)
1040    
1041    checkpoint50h_post
1042    o new package "land": provide surface BC for AIM.
1043    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1044    o AIM: use true log-P extrapolation for near surface temp (= as in
1045        F.Molteni paper) ; update aim.5l_cs output.
1046    o New variable in PARM03 for more flexible pickups
1047    o somewhat cleaned package initialisation sequence for
1048      ctrl/ cost/ ecco/ in packages_... routines
1049    
1050    checkpoint50g_post
1051    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1052      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1053      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1054        made the default because of faster convergence than ADI
1055    
1056    checkpoint50f_post
1057    o exf totally restructured
1058      - replaced all exf_set_ routines by one generic exf_set_gen.F
1059        and made sure it's still differentiable
1060      - split exf_getffields.F into new exf_bulkformulae.F
1061      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1062      - updated adjoint/makefile and relevant verif. accordingly
1063    
1064    checkpoint50f_pre
1065     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1066          + change Evap over land. (update aim.5l_cs output)
1067     o added missing .cvsignores and made uniform across expts
1068     o changed configuration of tidal_basin_2d expt
1069     o added pkg/debug functions for tracing code in fatal crashes
1070     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1071     o new fn in pkg/monitor to stop model if solution grows too big
1072     o removed lots of single quotes from comments
1073    
1074    checkpoint50e_post
1075    o make KPP work with PTRACERS
1076     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1077       nearly a copy of kpp_transport_s
1078     - there is no analogue to SurfaceTendencyS, so I have to use
1079       gPtr(of the surface layer) instead
1080    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1081    checkpoint50e_pre
1082    
1083    checkpoint50d_post
1084    o change kpp output from multiple-record state files to single-record state
1085      files analogous to write_state.F
1086    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1087      analogous to the cg2d-related output.
1088    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1089      so that writing to internal file fn (with length 512) fails.
1090    checkpoint50d_pre
1091    
1092    checkpoint50c_post
1093    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1094    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1095    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1096    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1097    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1098    
1099    checkpoint50c_pre
1100    Merging from release1_p13:
1101    o bug fix for pkg/seaice dynamic solver
1102    o Added SEAICE_initialHEFF to pkg/seaice
1103    
1104    checkpoint50b_post
1105    o store u*,v* in gU,V instead of in guNm1,gvNm1
1106    o in order to put the momForcing out of the Adams-Bashforth:
1107      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1108      to timestep.F
1109    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1110    o re-generate output for highly sensitive test-exp:
1111       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1112    
1113    checkpoint50b_pre
1114    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1115    o corrected CPP option mismatch in exf_Bulk... functions for case
1116      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1117    
1118    checkpoint50a_post
1119    o Bug fix for merging between c50 and KPP.
1120      ikey was passed from thermodynamics to kpp_calc via
1121      common block rather than being recomputed in kpp_calc,
1122      in contradiction with new key itdkey.
1123      New key ikppkey created, and tamc.h headers updated.
1124    
1125    checkpoint50
1126    - 2nd step of merge with ecco-branch:
1127      merge changes in ecco-branch back into main trunk
1128    - bug fix in find_alpha
1129    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1130    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1131    - merged some sliced AD support routines
1132    
1133    checkpoint49
1134    merged from ecco-branch:
1135    o exf:
1136      - Enable initialisation of forcing fields to constant
1137        (runtime) values.
1138      - in exf_getffields.F
1139        Reduce i-/j-loop to interior domain, discarding overlaps.
1140        That also fixes wrong TAF-key computations for key_1, key_2
1141        with bulf formulae.
1142      - exf_init.F modify #ifdef for exf_init_evap
1143      - exf_getffieldrec.F, ctrl_getrec.F
1144        The following INT-usages are not safe:
1145          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1146          fldcount = int(fldsecs/fldperiod) + 1
1147        and were modified.
1148    o autodiff: checkpoint_lev...
1149      - updated storing for bulk formulae (some arrays were missing)
1150      - added state for seaice package
1151      - synchronized with main branch
1152    o DIVA:
1153      Modif.s in
1154      - the_main_loop.F
1155      - the_model_main.F
1156      and added cost_final_restore.F cost_final_store.F
1157      o With these changes, it is possible to fully separate
1158        the first forward run to compute the cost function (mdthe_main_loop)
1159        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1160        into separate model executions.
1161        This enables better tuning of DIVA to given queue sizes.
1162      o Loss of cost function value in consecutive DIVA runs is
1163        fixed by storing to 'costfinal' file.
1164      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1165        beginning/end of adjoint integration is accounted for.
1166      The current changes apply to TAF-1.4.26.
1167      TAF has one remaining bug, requiring one manual change
1168      (see MITgcm manual).
1169    o cal: synchronized between MAIN and ecco-branch
1170    
1171    checkpoint48i_post
1172    o Changes to restore differentiability of code w.r.t. previous tag
1173      (mostly adding new routines to make list and replacing
1174      pressure by totPhiHyd).
1175    o Updated and merged grdchk package
1176      - has both ADM and TLM checks
1177      - works for single- and multi-proc.
1178      - output cleaned
1179      - worked successfully for parallel DIVA
1180    o genmake:
1181      - Adding -platform=SP4
1182      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1183    o Modif. for DIVA:
1184      ctrl_unpack should not be called in intermediate DIVA interval.
1185      (similar thing would apply for active files such as
1186      tbar, sbar, psbar, which should not be reinitialised;
1187      only relevant for ecco-branch)
1188    
1189    checkpoint48h_post
1190    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1191    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1192    o Added SEAICE_initialHEFF to pkg/seaice
1193    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1194    
1195    checkpoint48g_post
1196    --- EOS:
1197    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1198      store total Potential in totPhyHyd for diagnostics & EOS.
1199    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1200    --- Pressure/geopotential gradient:
1201    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1202    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1203      ( changes results of global_ocean_pressure )
1204    o NLFS + z-coord.: add eta*Rho' contribution.
1205    o accurate phiHyd when using interface-W at the middle between 2 centers
1206     ( changes results of ideal_2D_oce )
1207    o includes r* 2nd term in potential gradient.
1208    
1209    checkpoint48f_post
1210    Merging from release1_p12:
1211    o Modifications for using pkg/exf with pkg/seaice
1212      - improved description of the various forcing configurations
1213      - added basic radiation bulk formulae to pkg/exf
1214      - units/sign fix for evap computation in exf_getffields.F
1215      - updated verification/global_with_exf/results/output.txt
1216    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1217      (SBO) core products, including oceanic mass, center-of-mass,
1218      angular, and bottom pressure (see pkg/sbo/README.sbo).
1219    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1220      to avoid negative values in shallow regions.
1221      - updated verification/natl_box/results/output.txt
1222      - updated verification/lab_sea/results/output.txt
1223    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1224    o Added useSingleCpuIO option (see PARAMS.h).
1225    o Updated useSingleCpuIO option in mdsio_writefield.F to
1226      work with multi-field files, e.g., for single-file pickup.
1227    o pkg/seaice:
1228      - bug fix in growth.F: QNET for no shortwave case
1229      - added HeffFile for specifying initial sea-ice thickness
1230      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1231    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1232      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1233    o pkg/seaice:
1234      - adjoint-friendly modifications
1235      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1236    
1237    checkpoint48e_post
1238    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1239    o dynamics: change definition of computational domain & adapt mom_fluxform
1240      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1241    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1242        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1243        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1244        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1245        inverted_barometer solid-body.cs-32x32x1
1246      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1247    
1248    checkpoint48d_post
1249    o in preparation for r*:
1250     a) use pre-computed gradient of hydrostatic potential:
1251        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1252     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1253        => affects results of glob_oce_pressure (different truncation error)  
1254      update output.txt of ideal_2D_oce & global_ocean_pressure
1255    
1256    checkpoint48d_pre
1257    o in preparation for r*:
1258      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1259      pass the 2 comp. of the grad. as arguments to momentum S/R.
1260      but for the moment, only used if it does not change the results.
1261    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1262    
1263    checkpoint48c_post
1264    Modifications in treatment of initial flux forcing controls
1265    to avoid extra storing of flux fields.
1266    
1267    checkpoint48c_pre
1268    o Added tidal_basin_2d experiment (currently 1D!)
1269    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1270    
1271    checkpoint48b_post
1272    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1273     (modification to pressure gradient not yet implemented)
1274    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1275      (for U & V) that are used for vertical advection of momentum.
1276    
1277    checkpoint48a_post
1278    o In preparation for r*, use temp. array to compute vertical transport
1279       in flux-form momentum pkg. => change results of few test-exp.
1280      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1281                        lab_sea, natl_box & plume_on_slope
1282    
1283    checkpoint48
1284    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1285    
1286    checkpoint47j_post
1287    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1288    o moved adexch from forward_step to addummy_in_stepping
1289    o added exch in ctrl_map_...
1290    o aveFreq.=0. at end of cost_final to avoid overwrite in
1291      reverse checkpointing loop
1292    o Yet more changes in gmredi:
1293      * adgmredi_calc_tensor
1294        avoiding all recomputation of gmredi_slope_limit
1295      * adgmredi_x/y/rtransport
1296        added flag for excessive storing to avoid recomp. of
1297        u/v/rtans, dTdx/y/z
1298        -> this is not really necessary and very memory-consuming
1299      * adgmredi_slope_psi:
1300        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1301      * gmredi_slope_limit
1302        re-activated full calculation of taperfct for case 'ac02'
1303    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1304    
1305    checkpoint47i_post
1306    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1307    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1308      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1309    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1310    o gmredi: fix few bugs.
1311    
1312    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1313    This will be a good checkpoint to plug into the ecco-branch.
1314    o few modif.'s to get latest version adjointed
1315      (mainly kick out code in ini_linear_phisurf)
1316    o modif's to run adjoint with exactConserv
1317    o case GM_BOLUS_ADVEC should be cleaned
1318      S/R gmredi_slope_psi should be cleaned
1319    o verification/carbon now has exactConserv=.TRUE.
1320    
1321    checkpoint47g_post
1322    o time-average AIM output: becomes independent from statvars time-average
1323      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1324    o After TAF bug fix:
1325      Tested adjoint of gmredi package.
1326      Tests were done with checkpoint47 rather than with latest
1327      checkpoint47f_post since the latter is broken for the adjoint
1328      verification/carbon/ contains both ADM and TLM gradient checks.
1329    Here they are, before they get changed/lost/stolen.
1330    Mostly modif.'s to fix numerical sensitivities.
1331    Gradient checks OK for
1332    - GM_taper_scheme:
1333      * clipping
1334      * ac02
1335      * linear
1336      * glw91
1337      * dm95
1338      * ldd97
1339    - GMREDI_OPTIONS:
1340      * GM_VISBECK_VARIABLE_K
1341      * GM_NON_UNITY_DIAGONAL
1342      * GM_EXTRA_DIAGONAL
1343      * GM_BOLUS_ADVEC
1344    in conjunction with data.gmredi parameters to be checked in
1345    in a few minutes under verification/carbon/code/
1346    
1347    checkpoint47f_post
1348    Merging from release1_p10:
1349    o modifications for using pkg/exf with pkg/seaice
1350      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1351        and SEAICE_EXTERNAL_FLUXES
1352      - pkg/exf CPP options EXF_READ_EVAP and
1353        EXF_NO_BULK_COMPUTATIONS
1354      - usage examples are Experiments 8 and 9 in
1355        verification/lab_sea/README
1356      - verification/lab_sea default experiment now uses
1357        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1358    
1359    checkpoint47e_post
1360    o created a tag prior to creating a branch
1361    
1362    checkpoint47d_post
1363    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1364      at the bottom boundary had an erroneous half slip boundary condition
1365    o added bottom drag and no slip boundary condition capabilities to
1366      oceanic pressure coordinates code
1367    o added new verification experiment global_ocean_pressure, this experiment is
1368      also described in the tutorial section of the manual
1369    checkpoint47d_pre
1370    
1371    checkpoint47c_post
1372    o Added a verification experiment for a global cubed-sphere ocean run
1373      -  verification/global_ocean.cubed32x32x30
1374      -  uses pkg/therm_seaice and pkg/bulk_forcing
1375    
1376    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1377    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1378      when using P-coordinate; only implemented for atmospheric config.
1379    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1380      NOTES: requires option NONLIN_FRSURF to be "#define".
1381    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1382    
1383    checkpoint47b_post
1384    Merging from release1_p9:
1385    o pkg/seaice
1386      - removed GOTO's and added taf directives
1387      - double precision constants to reduce the g77 (Linux)
1388        to F77 (SGI) differences reported in release1_p8
1389    o tools/genmake
1390      - added SGI options
1391    o verification/testscript
1392      - updated to that of checkpoint47a_post
1393    o verification/global_ocean.90x40x15/input/eedata
1394      - modified for SGI f77 compatibility
1395    o verification/lab_sea
1396      - added description of sea-ice model
1397      - added missing matlab routines
1398      - added test of thermodynamics parallelization
1399    
1400    checkpoint47a_post
1401    o new pkg: aim_v23
1402     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1403       for now, keep the same surface forcing as before.
1404     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1405     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1406     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1407    o add diagnostic of surface correction term in monitor output
1408    
1409    o bulk_force and therm_seaice
1410    - Two packages:  bulk_force (Bulk forcing)
1411      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1412    - Earlier integration from Stephaine Dutkiewicz
1413      and Patrick Heimbach.
1414    - Two ifdef statements for compile time,
1415       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1416    
1417    checkpoint47
1418    differentiable version of checkpoint46n_post
1419    o bug fix in quasihydrostaticterms
1420    o * "clean" adjoint code (in terms of extensive recomputations)
1421        can now be obtained for all GMREDI options (i.e. for
1422        - GM_VISBECK_VARIABLE_K
1423        - GM_NON_UNITY_DIAGONAL
1424        - GM_EXTRA_DIAGONAL
1425        - GM_BOLUS_ADVEC )
1426      * However, wrong gradient check problem remains unsolved.
1427      * New CPP options have been introduced for different
1428        tapering schemes
1429    o external_fields_load now part of differentiation list
1430    o pressure needs multiple storing;
1431      would be nice to have store_pressure at beginning or
1432      end of forward_step, e.g. by having phiHyd global (5-dim.)
1433      (NB: pressure is needed for certain cases in find_rho,
1434      which is also invoked through convective_adjustment).
1435    o recomputations in find_rho for cases
1436     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1437    o #define ATMOSPHERIC_LOADING should be differentiable
1438    o ini_forcing shifted to begining of initialise_varia
1439    o Incorporating QNVS line search routines into MITgcm
1440      (this is separate code, and therefore not under pkg)
1441      lsopt/, optim/
1442    o Updated verification/carbon/
1443      - #define GM_VISBECK_VARIABLE_K
1444      - GM_taper_scheme    = 'ldd97'    
1445    
1446    checkpoint46n_post
1447    Merging from release1_p8:
1448    o verification/natl_box:
1449      updating new external_fields_load routine
1450    o New package: pkg/seaice
1451      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1452      The sea-ice code is based on Hibler (1979-1980).
1453      Two sea-ice dynamic solvers, ADI and LSR, are included.
1454      In addition to computing prognostic sea-ice variables and diagnosing
1455      the forcing/external data fields that drive the ocean model,
1456      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1457      The implied surface heat flux is then stored in variable
1458      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1459      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1460      non-local transport term.  Because this call precedes model
1461      thermodynamics, temperature under sea-ice may not be "exactly" at
1462      the freezing point by the time theta is dumped or time-averaged.
1463      N.B.: fairly large differences in accuracy occur across
1464            different platforms/compilers; comparison between
1465            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1466            generated output gives:
1467       T           S           U           V
1468      C D M    c        m  s        m  s        m  s        m  s
1469      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1470      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1471      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1472    
1473      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1474    o GAD:
1475      - generated new common blocks to account for call of
1476        same gad routines with differing traceridentities
1477        (needed to modify tracerIdentity indices in GAD.h)
1478      - generated separate common blocks for case useCubedSphereExchange
1479        (Department of Futurology)
1480      - parameter lists to gmredi_?transport: added tracerIdentity
1481      - added new key indices to tamc.h
1482    o external_fields_load:
1483      - added this routine to TAF list
1484      - needed to make some common blocks global and additional storing
1485        along the same lines as exf package (checkpoint_lev?_directives.h)
1486    o exf:
1487      updated external forcing package
1488      - bug fixes carried over from ecco-branch
1489        (missing OBCS_OPTIONS.h in two routines)
1490      - enable easy to use "no forcing".
1491      - added exf I/O for atmospheric loading
1492      - added exf I/O for runoff data
1493      - transfered scaling between exf <-> MITgcm to exf namelist
1494    o Adding new verification experiment global_with_exf.
1495      This verification experiment is almost identical to the
1496      global_ocean.90x40x15 experiment, except that it uses
1497      the exf (and cal) package instead of the
1498      external_fields_load routine (cf README file).
1499    
1500    checkpoint46m_post
1501    o modified testscript to return -- when there are no lines of "%MON" output
1502    o added new flag "quasiHydrostatic" for QH mode
1503      and new routine quasihydrostaticterms()
1504    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1505      New routine: mom_u_coriolis_nh()
1506    o fixed sign of non-hydrostatic metric terms in u and v equations.
1507      Depend on correct sign of gravitySign.
1508    o added work.pc* to .cvsignore in aim directories using ifc
1509    o introduced flag for controllin non-hydrostatic metric terms
1510    o removed gravitySign from PARM04
1511    o switched to g77/ifc from pgf77 in aim experiments
1512    
1513    checkpoint46l_post
1514    o made convective adjustment work with pressure coordinates:
1515     - changed the direction of k-loop in convective_adjustment.F for the
1516       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1517     - adjusted the reference pressure k-index in convective_adjustment.F
1518     - adjusted the convection condition in convect.F (in analogy to
1519       calc_ivdc.F)
1520     - convective_adjustment no longer computes anything on the halos
1521     - removed the warnings about negative salinity from find_rho.F and
1522       find_alpha.F; instead the new routine look_for_neg_salinity, called
1523       at the beginning of find_rho, find_alpha, and find_beta, does a
1524       check of the entire slice, if CPP-option
1525       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1526    checkpoint46l_pre
1527    
1528    checkpoint46k_post
1529    o fixed the verification/global_ocean.90x40x15 experiment:
1530     - new bathymetry (the world according to A., JMC, and M.)
1531     - new initial fields and forcing fields (*.bin files)
1532     - new POLY3.COEFFS (for the next release one should switch to a full
1533       equation of state: JMD95P or MDJWF)
1534     - fixed several errors and redundancies in the data file
1535     - experiment uses looped cells
1536     - added matlab directory with diagnostic scripts for plotting of output
1537    
1538    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1539     - read AIM physics parameters from a file (data.aimphys)
1540     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1541    
1542    checkpoint46j_post
1543    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1544    o move wVel computation at the end of the time step, in S/R integr_continuity
1545    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1546    o update timeave pkg for wVel diagnostic.
1547    checkpoint46j_pre
1548    
1549    checkpoint46i_post
1550    o Clean up AIM package (and keep the results unchanged):
1551      include CPP_OPTION and use IMPLICT NONE in all routines ;
1552      declare all the variables _RL ; use _d 0 for all numerical constants.
1553      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1554    
1555    checkpoint46h_post
1556    o cleaned up the use of rhoNil and rhoConst.
1557      - rhoNil should only appear in the LINEAR equation of state, everywhere
1558        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1559        and the dynamical equations are all divided by rhoConst
1560    o introduced new parameter rhoConstFresh, a reference density of fresh
1561      water, to remove the fresh water flux's dependence on rhoNil. The default
1562      value is 999.8 kg/m^3
1563    o cleanup up external_forcing.F and external_forcing_surf.F
1564      - can now be used by both OCEANIC and OCEANICP
1565    checkpoint46h_pre
1566    
1567     Added code to convert surface volume flux (fresh water) into
1568     a mass flux when using P coordinates in the ocean (OCEANICP).
1569     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1570    
1571    checkpoint46g_post
1572    o Include a new diagnostic variable phiHydLow for the ocean model
1573      - in z-coordinates, it is the bottom pressure anomaly
1574      - in p-coordinates, it is the sea surface elevation
1575      - in both cases, these variable have global drift, reflecting the mass
1576        drift in z-coordinates and the volume drift in p-coordinates
1577      - included time averaging for phiHydLow, be aware of the drift!
1578    o depth-dependent computation of Bo_surf for pressure coordinates
1579      in the ocean (buoyancyRelation='OCEANICP')
1580      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1581        Theta, Salinity, and Pressure in the parameter list. This routine is
1582        presently contained in find_rho.F. This routine does not give the
1583        correct density for 'POLY3', which would be a z-dependent reference
1584        density.
1585    o cleaned up find_rho
1586      - removed obsolete 'eqn' from the parameter list.
1587    o added two new verification experiments: gop and goz
1588      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1589    checkpoint46g_pre
1590    
1591    checkpoint46f_post
1592    o Enable tangent linear (forward mode) gradient checks:
1593      - extended active file handling to g_... files
1594      - added TANGENT_SIMULATION to theSimulationMode
1595      - extended grdchk package accordingly
1596    o added tangent linear setup in verification/carbon/code_ftl
1597    o added adjoint setup in verification/front_relax/code_ad
1598    
1599    checkpoint46e_post
1600    o Added new equation of state -> MDJWF
1601      - EOS of McDougall et al., 2002, JAOT, submitted
1602      - caveat: the equation of state is only valid for a smaller (more
1603        realistic?) range of values than JMD95P/Z and UNESCO
1604      - added masks to the calculation of pressure in store_pressure
1605      - added more check values for density in check_eos (ini_eos.F), some of
1606        the old check values are out of the range of the MDJWF-eos, so don't
1607        expect perfect matches for those
1608    checkpoint46e_pre
1609    
1610    checkpoint46d_post
1611    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1612      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1613      case of pressure coordinates. eosType='JMD95Z' in
1614      combination with buoyancyRelation='OCEANICP' now causes an error.
1615    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1616      in find_alpha/beta.
1617    checkpoint46d_pre
1618    
1619    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1620      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1621    
1622    checkpoint46c_post
1623    o Changes necessary for ocean in p-coordinates
1624     -  Added new buoyancy relation = 'OCEANICP'
1625     -  Added new parameters = gravitySign (this used to be contained inside
1626        the factor dRdZ which I added when we first switched to R coordinates).
1627     X GM/Redi is not compatible (yet)
1628     X bottom drag and no-slip need to be debugged.
1629    checkpoint46c_pre
1630    
1631    checkpoint46b_post
1632    o Added new equation of state -> JMD95Z and JMD95P
1633      - EOS of Jackett and McDougall, 1995, JAOT
1634      - moved all EOS parameters into EOS.h
1635      - new routines ini_eos.F, store_pressure.F
1636    o Added UNESCO EOS, but not recommended because it requires
1637      in-situ temperature (see JMD95)
1638    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1639      unesco.f to be used with POLY3
1640    checkpoint46b_pre
1641    
1642    checkpoint46a_post
1643    o Added (atmospheric) pressure loading
1644      - new field in FFIELDS.h, etc...
1645      - new cpp flag ATMOSPHERIC_LOADING
1646    o Changed hFacC to _hFacC in calc_phi_hyd.F
1647    o Added SHORTWAVE_HEATING to some files for consistency
1648    checkpoint46a_pre
1649    
1650    checkpoint46
1651    further merges from release1_p5
1652    o new ctrl package
1653      - adopted from ECCO environment to enable optimization
1654      - added Eliassen Palm fluxes to controls
1655    o added Eliassen Palm flux controls to gradient check package
1656    o cost package
1657      - Compatible with new ctrl package
1658      - added Eliassen Palm cost hooks
1659      - modif's of existing cost functions
1660    o Adjoint-related bug fixes in kpp:
1661      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1662      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1663    o autodiff package
1664      - flow directives:
1665        + new for S/R do_the_model_io
1666        + enhanced for S/R checkpoint
1667        + new gmredi.flow
1668      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1669        disable adcommon.h/g_common.h by default.
1670      - fixed problem for adjoint of global_max
1671    o modified verification/carbon/
1672    o New setup for adjoint of global_ocean
1673    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1674    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1675    o incorporated hooks for sponge layer code (external_forcing.F)
1676    
1677    checkpoint45d_post
1678    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1679    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1680      (affects plume_on_slope "cg2d" output)
1681    o add new parameter deltaTfreesurf for free-surface time stepping
1682    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1683    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1684    o change phiMin in exp1 (to agree with documentation)
1685    o add new flags:
1686     - T,S forcing inside/outside Adams-Bashforth
1687     - turn off temp,salt advection and/or forcing
1688     - for each tracer, define internal flag for multiDimAdvection & A-B
1689    o monitor: change definition of KE to check conservation of Energy
1690    
1691    checkpoint45c_post
1692    o Removed f90 comments ("!")
1693    o Modified initialisations to enable exf package for MITgcm
1694      (without invoking ECCO_PACKAGE).
1695    o modifications to gradient check package (Martin Losch)
1696      - enable centered differences
1697      - modified format of standard output
1698    
1699    checkpoint45b_post
1700    o cleaned exchange calls in cg2d
1701    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1702    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1703      to configure barotropic setup (Martin Losch)
1704    o moved some initialisations within bi,bj loop in dynamics
1705      (TAF flow dependency)
1706    o in initialise_varia, moved call packages_init_variables
1707      before convective_adjustment_init
1708      (corresponding adjustment of TAF tape initialisation).
1709    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1710    
1711    checkpoint45a_post
1712    o compute Rho over the whole domain (extend iMin,jMin indices)
1713    o specific exchange for X-slice domain (case Ny=1)
1714    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1715    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1716    
1717    checkpoint44h_post = checkpoint45
1718    o Fix to restore differentiability:
1719      place at which packages_init_variables is called in
1720      initialise_varia is crucial for reverse control flow.
1721    o modifications in GMRedi to enable stable adjoint
1722      (corresponding modif's in thermodynamics, dynamics)
1723    o added missing hook for sponge layer code in external_forcing
1724    o modified test cost functions
1725    o storing in gad_advection (plus removal of write(0,*)!
1726    o missing headers TR1.h added in convective_adjustment routines
1727    o errorMessageUnit set non-equal zero in eeboot
1728      (conflict on some platforms, e.g. IBM SP3)
1729    o modified carbon verif.
1730    
1731    checkpoint44h_pre
1732    o vertical grid option: allow to put the Interface at the middle between
1733      2 cell-centers ; replace delZ in pkg/kpp by drF.
1734    o GM Advective form: Tracers are advected using the residual transport (=
1735      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1736    
1737    checkpoint44g_post
1738    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1739      results) ; ifdef missing in thermodynamics.F
1740    
1741    checkpoint44f_pre,checkpoint44f_post
1742    o added PTRACERS package
1743      This allows an arbitrary number of passive tracers to be integrated
1744      forward simultaneously with the dynamicaly model.
1745      + Implemented so far:
1746        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1747        - I/O and checkpointing
1748        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1749      + Not implemented so far:
1750        - KPP
1751        - OBCS
1752      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1753        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1754        line in data.pkg.
1755      + This package is disabled by default since it increases storage.
1756    
1757    
1758    o testscript: added -cleanup option
1759    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1760                 b) enable to filter 2D fields.
1761    
1762    checkpoint44e_pre,post
1763    o re-wrote convective adjustment to use pre-calculated weights
1764      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1765      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1766      Original calls to convect() still in place.
1767    
1768    chkpt44d_pre,post
1769    o added missing EXCLUDE_MONITOR flags
1770    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1771      (incompatible typ in MIN/MAX expressions caused problems
1772      on IBM SP3)
1773    o in genmake added variable MAKEDEPEND
1774      plus resetting for case SunOS
1775    o added timer_stats.c routine for IBM SP3
1776    o removed variables in dynamics
1777    !!! I forgot to create tag chkpt44d_pre !!!
1778    !!! But chkpt44d_pre = chkpt44c_post    !!!
1779    
1780    o real fresh water flux implemented with non-linear free-surface.
1781    
1782    chkpt44c_pre,post
1783    o few fix (mask in shap_s2, EmPmR in external_field_load,
1784      USE_NATURAL_BCS in solve_for_P);
1785    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1786    
1787    checkpoint44b_pre/_post
1788    o merge of relevant stuff from the ecco-branch:
1789      - genmake: removed $S64 overwrite for case SunOS
1790      - pkg/exf: update and corrections for field swapping and obcs
1791      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1792                  harmonized between ECCO and MITgcm
1793      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1794                      updated checkpointing_lev... lists for obcs
1795      - model/src: minor changes in forward_step, plot_field
1796                   added directive for divided adjoint in the_main_loop
1797      - pkg/mdsio: added mdsio_gl_slice
1798    
1799    o check parameters & config (chkpt44a_pre,post)
1800    o OBC and NonLin_FrSurf.
1801    
1802    checkpoint44
1803    o fix bug in mom_vi_del2uv
1804    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1805    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1806    o update AIM experiments (NCEP input files)
1807    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1808    o added some stuff for AD
1809    
1810    checkpoint43
1811    o added two new advection tests
1812    o added global 4x4 degree ocean test
1813    o added test of H&S94 with free surface on cube
1814    o some final mods for gradient check, adjoint,...
1815    
1816    checkpoint42
1817      Fixed AD-related problems:
1818    o Store directives up-to-date with re-arranged Adams-Bashforth
1819      (mainly thermodynamics.F)
1820    o New store directives for multi-dim. advection schemes
1821      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1822      * new common block and key passkey
1823      (mainly gad_advection.F)
1824    o Modified store directives for split of dynamics/thermodynamics
1825      for the case ALLOW_KPP
1826    o Cleaned argument list for timestep_tracer.F
1827    
1828    checkpoint41
1829    o re-formatted/added comments in prologues of key subroutines
1830      to work with protex
1831    
1832    checkpoint40
1833    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1834    o added FLT (floats) package from Arne along with demo. experiment
1835    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1836      implementation of forward-in-time forcing terms
1837    o more mods for non-linear free-surface including new variable
1838    o modified multi-dim method to work on cube
1839    o bug fix in KPP (from DM)
1840    
1841    checkpoint40pre9
1842    o added DST advection schemes
1843    o fix MPI bug on SGI's
1844    o modifications for non-linear free-surface
1845    o fixed conditionals for fixed flow/passive tracer only mode
1846    o added tension/strain form of stress tensor
1847    o changes to commenting of arguments for TAF/TAMC
1848    o added/updated many matlab scripts
1849    o added multi-dimensional advection method for tracers
1850      
1851    checkpoint40pre8
1852    o new package rw/
1853      Added method for dumping intermediate local arrays:
1854      mdsio_writetile - same as mdsio_writefield except works from inside
1855                        bi,bj loop
1856      mdsio_writelocal - same as mdsio_writetile except works for local
1857                         arrays
1858      write_local_r? - higher-level wrapper for mdsio_writelocal
1859      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1860      Example given at end of mom_vecinv.F that dumps some local arrays.
1861    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1862      control flux-form versus vector invariant code.
1863      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1864      or genmake -DISABLE ...
1865    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1866      (additional storing is now needed for case vecinv;
1867      currently nothing implemented to switch this storing off
1868      in case fluxform is used since no CPP flag available).
1869    
1870    checkpoint40pre7
1871    o bug fix in dynamics.F
1872      calc_viscosity called before k=1,Nr loop.
1873    o added some #ifdef's ALLOW_PASSIVE_TRACER
1874    o cleaned initialisations in ctrl_map_ini
1875      related to TAF
1876    
1877    checkpoint40pre6
1878    o split dynamics into thermodynamics & dynamics
1879    o corresponding split of calc_diffusivity into
1880      calc_diffusivity, calc_viscosity
1881      (kpp_calc_diff, kpp_calc_visc).
1882    o Added diffkr, kapgm to control variables
1883    o bug fix in gmredi_slope_limit for ldd97
1884    
1885    checkpoint40pre5
1886    o proper initialization of Adams-Bashforth time stepping
1887      + uses forward step for very first step of model (iter=0)
1888    o re-generated *all* output since almost all output is modified by this
1889      change (sorry but we've been putting this one off for about 2 years)
1890      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1891        *not* regenerated since they are already out of date and I don't
1892        want to create the impression that they are suddenly working.
1893    o removed KAP stuff for DEC's
1894    o modified/added many .cvsignore files in */code and */input
1895    o added new expt "solid-body.cs-32x32x1"
1896      + this uses an alternative form of ini_curvilinear_grid.F which
1897        is not necessarily any better than the current one...
1898    
1899    checkpoint40pre4
1900    o added re-initialisations of utrans,vtrans,rtrans in
1901      calc_common_factors which are crucial for TAF.
1902    o extended iMin,jMin range for calc_common_factors,
1903      calc_diffusivity
1904    o added option ALLOW_PASSIVE_TRACER
1905    o a few minor updates and fixes
1906    
1907    checkpoint40pre3
1908    o created calc_gtr1.F for gad package
1909    o split the_main_loop and re-introduced forward_step
1910    o some recomputations of nIter0 for TAMC
1911    
1912    checkpoint40pre2
1913    o Updated to latest branch of AJA, JMC
1914    o Added gradient check package
1915    o Added routines for passive tracer handling
1916    o Added carbon sequestration sensitivity experiment
1917    
1918    checkpoint39
1919     o Modifications and fixes to support TAMC
1920       (mainly missing or wrong directives)
1921     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1922       in addummy_in_stepping
1923     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1924     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1925     o Included following packages:
1926       cal: calendar
1927       exf: external forcing
1928       ecco: essential routines to control use of cal, exf
1929             (NB: this is not the full ECCO environment)
1930     o disabled some packages by default in genmake
1931    
1932    checkpoint38
1933     o see notes_c37_adj.txt
1934     o corrected wrong layer index in external_forcing_t
1935     o replaced the_main_loop/forward_step by the_main_loop
1936     o removed forceoutput from write_state
1937       (replaced criteria for initial/final state)
1938     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1939    
1940    checkpoint37
1941     o mdsio.F routine split and packaged in pkg/mdsio
1942       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1943        used unless genmake -disable=mdsio)
1944     o allow a more precise surface-geopotential gradient for the atmosphere
1945       taking into account the change in space of Alpha (=1/rho) at the surface.
1946     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1947       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1948     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1949       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1950       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1951     o Time-Average diagnostics defined as a pseudo package "timeave".
1952     o pickup files : old pickup (before c35) did not work with new code (c35
1953       and after) unless activating 2 commented lines in initialise-varia.
1954     o Non-Hydrostatic pickup file Pb fixed.
1955     o bug with Rigid-lid version (since c35) fixed.  
1956    
1957    checkpoint36
1958     o implement Crank-Nickelson barotropic time-stepping
1959     o recover Time-Average diagnostics
1960     o fix Pb in checkpoint (PR#19)
1961     o AIM become a standard package ; clean unused CPP_kees
1962    
1963    checkpoint35
1964     o subtantial rewrite of dynamics.f
1965     o allows staggered time-stepping
1966     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1967     o added bottom drag (linear + quadratic)
1968    
1969    checkpoint34
1970     o Modified exchange routines for correct reverse simulation.
1971     o Added verification output to comply with bug fix in impldiff.F
1972       as of c33 (exp2, natl_box).
1973     o Corrected store directives in dynamics.F
1974     o Corrected array boundaries in impldiff.F
1975     o Corrected array dimensions in gmredi.
1976       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1977     o Added routine GLOBAL_SUM_INT to global_sum.F
1978     o Added mdsio_gl.F for ECCO purposes.
1979    
1980    checkpoint33
1981     o Fixed bug in lower BC in impldiff.F
1982     o Fixed confusion about units of forcing arrays in FFIELDS.h
1983       namely Fu,Fv,Qnet,Qsw,EmPmR:
1984       - Removed verification/natl_box/code/external_fields_scale.F
1985         (did not differ from that in model/src)
1986       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1987         (see FFIELDS.h for description)
1988       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1989         kpp_calc.F and kpp_transport_t.F
1990       - Removed model/src/external_fields_scale.F and calls to it
1991       - verification/natl_box uses flux data with "atmospheric" sign so
1992         a special version of external_fields_load.F is used to
1993         change the data as it's read in. This way, the arrays
1994         have the right units and signs at all times tha a user could
1995         possibly use them.
1996     o Corrected genmake to delete a temporary file during configuration
1997    
1998    checkpoint32
1999     o Scaling of forcing fields moved from external_forcing.F to
2000       external_fields_scale.F, called directly after loading fields.
2001     o Surface relaxation terms added to surface tendency fields in
2002       extra subroutine.
2003     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2004       fields.
2005     o Changes in GMRedi to comply with packaging structure.
2006     o Modifications and bug fixes in KPP package.
2007     o Verification experiment for KPP added (verification/nat_box/)
2008    
2009    checkpoint31
2010     o Packages interface brought in line with defined standard
2011       -> new routines packages_...F
2012       -> changes in initialise_fixed.F, initialise_varia.F
2013       -> enables initialisation interface for ECCO package
2014     o Rescaling of external forcing fields immediately after read
2015       (removed from external_forcing.F)
2016       -> new: surface_fields_scale.F
2017       -> affects ini_foorcing.F, external_fields_load.F
2018     o Computation of surface tendencies before tendency updates.
2019       -> new: external_forcing_surf.F
2020     o Change of variable names useGMRedi, useKPP, useECCO
2021     o Further changes in dynamics.F, impldiff.F for TAMC
2022     o Tested for experiments 0, 2, 4.
2023       - not yet tested for GMRedi.
2024       - not yet tested for KPP.
2025    
2026    checkpoint30
2027     o Updates for OBCs
2028     o New experiment for test OBCs (internal_wave)
2029     o New output.txt in verification/exp4/results/
2030     o Updates for KPP: calculation of viscosity corrected, new variables
2031       kpp_dumpFreq and kpp_taveFreq
2032     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2033       and entry for T90 in genmake
2034    
2035    checkpoint29
2036     o packaged KPP and GM/Redi
2037    
2038    checkpoint28
2039     o Corrected initialization of hFacMin for difference vertical coordinates
2040     o Modified calculation of partial cell thickness to more robust algorithm
2041     o config_summary.F: replaced write_1D_... by write_0D_...
2042       read_write.F: added subroutines write_0D_...
2043     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2044       included some initialisations required for TAMC.
2045     o routine calc_isoslopes: modified sqrt computation to make it
2046       differentiable for zero argument.
2047     o routines dynamics, impldiff:
2048       included store directives and tape key computations required for TAMC.
2049     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2050    
2051    checkpoint27
2052     o fixed calc_isoslopes() to so that cancellation of terms in tensor
2053       formulation works properly with variable resolution.
2054     o restructured the calling tree between the_model_main() and dynamics()
2055     o split initialise() into initialise_fixed() and initialise_varia()
2056     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
2057       in new routine ini_psurf()
2058    
2059    checkpoint26
2060     o moved some #ifdef in optional routines to encompass everything
2061       except the argument declarations. This was using up some memory.
2062     o fixed macros like _ADT to work with both versions of Linux cpp
2063     o cleaned up some unused and uninitialized variables
2064       (helps when debugging with strict compile options)
2065     o split up CPP_EEOPTIONS.h into options and macros
2066       (macros are now in eesupp/inc/CPP_EEMACROS.h)
2067     o patch for 2 processor JAM mode
2068    
2069    checkpoint25
2070     o updates for OBCs and NH
2071     o dramatically reduced memory usage
2072     o added "JAM" routines for use on Artic network
2073     o parameterization of convection by implicit vertical diffusion
2074     o added a diagnostic of convective index
2075     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
2076       (this is was partly for OBCs and NH but also in anticipation of
2077        an explicit free-surface option)
2078     o initial state input files for U and V
2079    
2080    checkpoint24
2081     o Removed some spurious "REAL"s
2082     o Updated KPP to latest version from JPL
2083     o Added a COS(latitude) in horizontal viscosity
2084    
2085    checkpoint23
2086     o Added del^4 diffusion for salt and temperature
2087     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
2088    
2089    checkpoint22
2090     o Made many small changes: implicit none, format(i5), etc...
2091     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
2092    
2093    checkpoint21
2094     o Introduced new I/O package that supports direct-access records (mdsio.F)
2095     o Split-up mid-level I/O routines
2096     o Updated input data for experiments 0,1,2,4 and 5
2097     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
2098    
2099    checkpoint20
2100     o Tidied up open-boundaries some more
2101     o Added non-hydrostatic code
2102     o Fixed some input data
2103     o Modified MPI start-up to work in "coupled" context.
2104    
2105    checkpoint19
2106     o Tidied up directory structure for verification experiments.
2107     o Added new code for open boundaries.
2108     o Corrected advective terms near boundaries.
2109     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
2110     o Implemented free-slip/no-slip BCs and del^4 dissipation.
2111     o Split default parameters out of ini_parms.F into set_defaults.F.
2112    
2113    checkpoint18
2114     o Further changes for optional code generation with
2115       CPP - ugh!
2116    
2117    checkpoint17
2118     o Beginning to incorporating modularity
2119       for supporting atmos. and ocean configs.
2120     o Small changes for TAMC complinace
2121     o New ultra simple test case. Barotropic box
2122       configuration "exp0".
2123    
2124    checkpoint16
2125     o Minor changes to exchange routines to support
2126       accumulation in reverse mode. Adjoint of an
2127       assignment is an addition.
2128     o Changes to support compilation by TAMC (LR(1)
2129       syntax) and by g77 under Linux ( 72 character
2130       limit ).
2131    
2132    checkpoint15
2133     Rewrote exchange routines to allow
2134     o General tile <-> tile connectivity.
2135     o TAMC reverse mode flag ( is this really needed? )
2136     o Variable width overlap and exchange region widths.
2137     o Hooks for sharing data via DMA, Arctic, Memory Channel,
2138       shmput/shmget, VIA, SYSV shmem and every other cool
2139       communication method.
2140    
2141    checkpoint14
2142     Consistent isomorphism chages made. These allow dynamical core
2143     to support both pressure and meters as a vertical coordinate.
2144    
2145    checkpoint13
2146     Release which corrects global_max problem and a couple
2147     of KGM time-averaging diagnostic errors. Also contains
2148     a double-gyre experiment setup as well as the baseline
2149     4 degree global template. The double gyre template is
2150     organised to allow it to be applied automatically to
2151     the baseline configuration.
2152    
2153    branch-point-rdot
2154     A few tidy-ups have been made bt the real point of this
2155     check-point (excuse the pun) is to allow a branch to be
2156     made for the purposes of adding the rDot alterations.
2157     I don't want to commit the rDot to the main-trunk until
2158     we've actually tested it...
2159    
2160    checkpoint12
2161     Tidy up and added generic genmake script (formerly
2162     configure script).
2163     Released to testers.
2164    
2165    checkpoint11
2166     Re-arranged initialise() and introduced ini_vertical_grid()
2167     and ini_masks_etc().
2168    
2169    checkpoint10
2170     Introduced the configure script.
2171     Separated out the diags package.
2172     Added template for writing time-averages of tile/intermediate quantities.
2173     Updated SIZE.h in exp2 and made the data big-endian.
2174    
2175  checkpoint9  checkpoint9
2176   MPI fix. Filename changes (meta/data). salbin*y stuff.   MPI fix. Filename changes (meta/data). salbin*y stuff.
2177   General tidy-up.   General tidy-up.

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