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revision 1.38 by heimbach, Tue Apr 10 22:35:24 2001 UTC revision 1.415 by mlosch, Thu Dec 16 14:27:40 2004 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o clean up build options files for SunOS, in particular
7      - remove -traditional from xmakedepend
8      - change -xarch=v9 to -xarch=native for f77
9      - restore use of make (not gmake)
10      - add CC=gcc if using g77
11    o changes per discussion of AM, JMC, & EH3 today:
12      - move redundant "grid" variables out of "state" -- in preparation of
13        creating proper CF-style coordinate variables and in recognition
14        that any/all grid variables can be easily copied (eg. w/NCO) from
15        the grid files into any of the other NetCDF files
16      - *always* output grid variables with MDSIO (this will eventually be
17        changed)
18      - output MNC grid file if useMNC is true
19    o every instance of _END_MASTER() has been found and replaced with
20      _END_MASTER( myThid ) in order to satisfy certain picky Sun
21      preprocessors
22    o re-arrange diagnostics pkg initialisation:
23     - allow each package to extend the available diagnostics list
24     - add some checking and fix small problems (multi-threaded, ...)
25     - new S/R diagnostics_fill (replace fill_diagnostics):
26       look through the short list of active diag. (instead of the long list)
27       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
28    
29    checkpoint57a_post
30    o this set of changes restores TAMC compatibility
31      tested for global_ocean.90x40x15 adjoint on trough
32      (what a pain)
33    
34    checkpoint57a_pre
35    o some modifs in tools/build_options for sunos
36    o call ctrl_pack for ctrl at end for optimcycle=0
37    
38    checkpoint57
39    o add horizontal bi-harmonic viscosity for vertical velocity
40      - new parameter viscA4W (defaults to viscA4)
41      - affects only non-hydrostatic code
42      - to be done: no-slip lateral boundary conditions
43    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
44    o implement Implicit Vertical advection for pTracers
45    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
46      (implemented also for implicit vertical diffusion & advection)
47    o OBCS: extend application of tracer open boundary conditions
48      to a strip beyond the boundary of width Olx/Oly
49    o add call monitor to TAF set of required calls (flow directives)
50      and include in natl_box_adjoint
51    o untangle a few ifdefs related to cost, ctrl, autodiff
52      untangel a few ALLOW_ECCO_OPTIMIZATION
53    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
54      (theta2, salt2 in ecco_cost_weights)
55    
56    checkpoint56c_post
57    o OBCS as control variables
58      - update ctrl_ad_diff.list, obcs_ad_diff.list
59      - remove balance of obcs controls from default
60      - fix index bug nobcs in ctrl_init
61      - fix dummy fields filen in ctrl_pack
62      - add dummy weights for obcs
63    o lsopt: comment out fort.94 output
64    o optim:
65      - remove unnecessary header files
66      - adjusted namelists
67      - add xerbla.F to Makefile
68    o exf:
69      - multiple modifications of exf_check_range
70      - unit change in exf_init_runoff from [m/year] to [m/s]
71    o mdsio:
72      - i/o-vector change debugLevel from debLevA to debLevB
73    
74    checkpoint56b_post
75    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
76      is called from DO_THE_MODEL_IO
77      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
78      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
79      - clean up PTRACERS_WRITE_TIMEAVE a little
80    o add another verification experiment that tests both the cfc-pkg and
81      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
82      reactive tendencies treated inline with regular timestepping
83    o testreport previously did a lousy job of comparing small numbers, so
84      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
85      implemented in the little c-progam tmp_cmpnum.c which is embedded in
86      testreport.
87    o ptracers_monitor: bug fix for MPI
88    
89    checkpoint56a_post
90    o GCHEM: finish reorganizating the package
91      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
92        (introduces another 3D-array for each passive tracer, but only if
93        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
94        gchemTendency is not needed because the timestep is done separately)
95      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
96      - GCHEM is now---more or less cleanly---separate from PTRACERS
97      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
98        so clear to me how that should be done in a general way.
99    o CFC: improve formatting of output in CFC_ATMOS
100    o PTRACERS:
101      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
102        that ALL experiments with ptracers enable can be checked. This makes
103        GCHEM_MONITOR obsolete.
104      - include a runtime parameter PTRACERS_monitorFreq that defaults to
105        monitorFreq
106      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
107    o add PTRACERS (PTR0[1-5]) to testreport output
108    o exf_check_range:
109      * default changed to .TRUE.
110      * will check values for niter0 if debLevA, every timestep if debLevB
111      * STOP in exf_check_range if 'out of range'
112      * range chosen generous to allow for potential extema
113      TBD: a version with stricter range
114           permitted range would be runtime parameters
115    o GMredi:
116      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
117      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
118      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
119    o GCHEM:
120      - move call to GCHEM_FORCING_SEP, so that it is now called before
121        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
122      - introduced a useGCHEM runtime flag and applied it everywhere.
123      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
124        this flag is now only visible within GCHEM-pkg routines.
125      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
126        be replaced by a 3D array that is computed before thermodynamics; for
127        this, the tracer ID iTracer had to be included into the parameter list
128        of ptracers_forcing
129      - set up forward_step to call gchem_forcing, that will replace
130        gchem_forcing_int in ptracers_forcing
131      - cleaning up
132    o small cleaning of exch2: remove files that are also in eesupp/src
133    
134    checkpoint56
135    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
136    o mnc: cleanup "full" files--fixes out-of-memory problem
137    o ECCO-GODAE
138      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
139      * fully merged and updated from SIO code
140        windstress sign change affects
141        - exf_inscal_[u/v]stress
142        - sign of xx_tau[u/v] adjustments
143        - signs in cost_scat
144      * ctrl_get_gen: avoid update of tau[u/v] for first few days
145      * natl_box_adjoint updated and compressed
146      * 2-level checkpoint switch added
147        (tested in EXP. 1 of natl_box_adjoint)
148      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
149    o SVD
150      * first complete, non-hacked version for SVD calculations
151      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
152        performed via direct access files admtlm_vector.it????
153        (via ctrl_[un]pack)
154      * optimcycle is used for ARPACK iteration counter
155        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
156      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
157        and add linear transforms where necessary
158      * controls are initial/final SST, SSS (can be extended; need to check
159        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
160    o mdsio: filename info to both stderr, stdout
161    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
162      from sign change
163    
164    checkpoint55j_post
165    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
166      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
167    o add consistent build directories and .cvsignore files to verification
168    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
169    o make all subroutines 30 or less characters in length for certain older
170      compilers to work (a thorough search only turns up two routines in
171      pkg/ptracers)
172    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
173      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
174    
175    checkpoint55i_post
176    o change arrays for total vertical diffusivity (2.D if explicit,
177      3.D if implicit) ; each ptracer uses its own background value.
178    o added mnc/NetCDF output capability to ocn_compon_interf
179      - added bits to verification/cpl_aim+ocn so that it can run on
180        ITRDA and other clusters without the mpirun "-wd" option
181    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
182      configuration
183    o give MNC the ability to create additional files rather than
184      exceeding a specified file size limit "MNC_MAX_FILESIZE"
185      - the default is just less than 2GB which is a practical limit
186        on many systems
187    o Compute the non-local term using either KPP vertical diffusivity (=default)
188       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
189    
190    checkpoint55h_post
191    o add verification test "vermix"
192    o remove all the *_ioinc flags and replace with the single global
193      outputTypesInclusive flag
194    o allow to set a vertical profile of vertical diffusivity for T & S
195    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
196    o useMNC moved from data.mnc to data.pkg
197    
198    checkpoint55g_post
199    o Renaming carbon AD experiments to comply with testreport conventions
200    o Updating adjoint of Held-Suarez hs94.1x64x5
201    o Fixing directives for non-ECCO forward_step, after ECCO directives
202      have been fixed to avoid recomp. of do_oceanic_phys
203      Works well for global_ocean.90x40x15,
204      but recomp. issue remains for carbon
205    o Updating adjoint output for natl_box_adjoint after
206      pkg/ecco has been modified (see taga c55d_post)
207    
208    checkpoint55f_post
209    o rename to timeave_init_fixed
210    
211    checkpoint55e_post
212    o some delicate re-shuffle of store directives to avoid one
213      extra call of do_oceanic_physics
214      affects ecco_the_main_loop.F, do_oceanic_physics.F
215      checkpoint_lev1_directives.h
216    o NB: this may break global_ocean adjoint temporarily,
217      but it is clear how to fix it. Will do later, need this now.
218    
219    checkpoint55d_post
220    o ECCO specific cost function terms (up-to-date with 1x1 runs)
221    o ecco_cost_weights is modified to 1x1 runs
222    o modifs to allow observations to be read in as
223      single file or yearly files
224    o enable to read exf forcing fields as either
225      single file or yearly files (flag useExfYearlyFields)
226    checkpoint55d_pre
227    
228    o switch between 2-level and 3-level checkpointing
229    o add ability of MNC to write local and "partial" (eg. 2D slices where
230      the full 3D field is never actually stored) arrays to NetCDF files
231      with the correct (that is, the complete multi-dimensional) set of
232      array indicies
233      - used in mom_vecinv() to write the diagFreq output
234      - tested (demonstrated) in verification/aim.5l_cs
235    o further mnc-ification
236      - add verification/lab_sea to the list with mnc setups
237      - fix undefined mnc v-names in cd_code
238      - add kpp to mnc output (both snapshot and timeave)
239    o non-hydrostatic code
240      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
241        in calc_gw.F
242      - defaults to viscAh
243      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
244        friction or Leith) in non-hydrostatic mode, as long as there is
245        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
246    o pkg/cost
247      extend simple cost functions to treat time mean quantities
248      (T,U,V) via cost_accumulate_state from cost_tile
249    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
250        be 2 times larger than the minimum size the advection scheme requires.
251        now get a perfect conservation of salt in advect_cs test-exp (updated)
252    o GGL90 (Gaspar's TKE mixed layer)
253      - add horizontal diffusion of TKE, requires exchanges in
254        do_fields_blocking_exchanges, horizontal diffusivity is zero by
255        default. In OPA there is no horizontal diffusion of TKE but the
256        mixing coefficients are computed from a horizontal average of TKE of
257        6 points or so. I think that diffusion has a little more physical
258        justification.
259      - clean up ggl90_calc in the hope of reducing memory usage (this hope
260        was in vain)
261      - mask tke-variable in ggl90_init
262    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
263    o fix biharmonic diffusion on CS-grid.
264    o more obcs stuff
265      - added obcs_external_fields_load as an alternative to the EXF-pkg option
266        for reading boundary values. This routine is called from
267        obcs_prescribe_read
268      - updated obcs_check
269      - changed sponge layer relaxation parameter units for days to seconds
270      - turned off sponge layer by default
271      - changed argument list of OBCS_CALC to myTime+deltaTclock
272      - fixed about 35 bugs in obcs_external_fields_load
273    
274    checkpoint55c_post
275    o obcs stuff
276      - new runtime flags useOBCSprescribe, useOBCSbalance
277      - re-arranged obcs_calc
278      - moved exf_getobcs to obcs_prescibe_read
279        obcs_prescibe_read is called after ORLANSKI stuff
280        and independent of it (executable can contain all).
281      - updated obcs_check
282      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
283        These may be necessary only if tangential velocities are
284        prescribed at OB, not sure, needs testing.
285    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
286      which simplifies the calls and passes the ifc check-bounds test
287    
288    checkpoint55b_post
289    o add a 2D scalar, Z location, exchange_2 routine.
290    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
291      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
292      affects advect_cs results (for the wrong reason): update output.txt
293    o use a more standard discretization for biharmonic viscosity ;
294     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
295      affects results of dome set-up: update output.txt
296    o fix gad_advection.F (CubedSphere part), back to version 1.23
297    o fix bug in mom_vi_del2uv.F (CubedSphere part).
298    
299    checkpoint55a_post
300    o merged code to
301      * prescribe/read time-dependent open boundaries
302        (works in conjunction with exf, cal)
303      * sponge layer code for open boundaries
304      * each boundary N/S/E/W now has its own CPP option
305        (healthy for the adjoint)
306    
307    checkpoint55
308    o up-to-date adjoint of previous breaks
309      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
310      - global_ocean_ebm: adjoint still needs fix (TLM ok)
311      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
312      - carbon: * remove tr1-related adjoint verification
313                * add ptracer as control variable
314    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
315      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
316    
317    checkpoint54f_post
318    o in verification/carbin/ remove experiment related to
319      ALLOW_PASSIVE_TRACER (array tr1 etc)
320      code_ad/ input_ad/ results_ad
321    
322    o add two new packages
323      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
324        + subject to optimization (memory)
325      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
326        + subject to reordering (many GOTOs in the original code)
327        + so far opps is called for every (i,j) point, and then operates in
328          the vertical; one may want to reorder the scheme in order operate in
329          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
330          fields)
331    o overhaul of IO so that we now have flags for MDSIO and/or MNC
332      - all verification tests compile and run with linux_ia32_g77
333      - defaults are compatible with current input files--nothing
334        should change if you were not previously using MNC
335      - MNC output has been added in numerous places (eg. timeave)
336        but there are still a few writes not yet do-able with MNC
337        (this is in progress)
338      - flags now allow for either/or/both use of MDSIO and MNC and
339        documentation will soon follow
340      - numerous small formatting cleanups for ProTeX
341    o add version info (via BUILD_INFO.h) to MNC and stdout
342    
343    checkpoint54e_post
344    o add two new packages
345      - pp81 (Packanowski and Philander, 1981), Richardson number and
346        stratification dependent mixing
347      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
348      - these scheme operate in a similar manner as KPP (without ghat, of
349        course), however there is only one diffusivity that is used for both
350        temperature and salinity (and passive tracers)ç
351    o add offline package
352    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
353      provided by Stephanie Dutkiewicz
354    o genmake2: add ability to search for C compilers and cleanup test output
355      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
356    
357    checkpoint54d_post
358    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
359    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
360      leading to additional shift by 5 days each year of integration
361       (i.e. leading to considerable offset over the years)
362    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
363    o start with no AB and no initial filtering (staggerTimeStep):
364      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
365    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
366      (external loading & cpl import/export stay in forward_step.F)
367    o update coupling interface to work with new staggerTimeStep
368    o change MDSIO ptracers_pickup.
369    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
370    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
371    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
372    
373    checkpoint54c_post
374    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
375      this affects (truncation error) output.txt of test-exp:
376       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
377    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
378    o change Qnet to always be the net heat flux, (+upward).
379      affects (truncation error) output of natl_box exp.: updated
380    o define the max number of passive tracers in PTRACERS_SIZE.h
381    o start to test mnc routinely in exp0
382    o add sea-ice loading (sIceLoad) as a new forcing field.
383    
384    checkpoint54b_post
385    o add testreport "-j JOBS" option for parallel builds (tested and pretty
386       impressive on Altix and Opteron systems)
387    o diagnostics can now write NetCDF files through the mnc package
388    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
389    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
390    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
391      affects (truncation error) output of lab_sea & natl_box exp.: updated
392    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
393    
394    checkpoint54a_post
395    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
396    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
397    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
398    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
399      + internal_wave (shift in writing cg2d_ini_res)
400    checkpoint54a_pre
401    
402    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
403      - modified verification/lab_sea and natl_box_adjoint accordingly
404    
405    checkpoint54
406    checkpoint53g_post
407    o prepare splitting of thermodynamics: store convect.counter in common block
408    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
409      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
410    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
411    o new parameter "nShapS": allow to treat differently S from T (nShapT)
412    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
413    o restore adjointability
414    
415    checkpoint53f_post
416    o modifications that affect AIM experiment results (update output.txt):
417      - no advection of S at top interface Nr (pkg/generic_advdiff)
418      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
419    o AIM pkg:
420      - include stability function into surf.Flux derivative relative to Tsurf
421      - calculate clear-sky radiation & surface temp. change (for diagnostics)
422    
423    checkpoint53e_post
424    o merged cylindrical coord configuration
425    o added rotating_tank experiment
426    checkpoint53e_pre
427    
428    checkpoint53d_post
429    o faulks upgraded: re-generate output.txt that have changed:
430       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
431    o Added Bryan and Lewis, 1979, vertical diffusivity profile
432    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
433    o added Sadourny discretization of Coriolis
434      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
435      - re-enabled use of omega3 (useAbsVorticity)
436    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
437      vector-invariant equations
438      - note: does *NOT* yet use same variable visc. for no-slip BC's.
439    o recoded the lateral boundary conditions for non-hydrostatic w, this time
440      hopefully without new bugs
441      - still to do: biharmonic friction for non-hydrostatic w
442    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
443    o regenerated output for global_ocean_ebm (using -ieee)
444    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
445      of mom_common/
446      - simple re-arrangement of instructions within computing loop
447    checkpoint53d_pre
448    
449    checkpoint53c_post
450    o new version of coupler for AIM+thSIce and Ocean models
451     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
452     - land: change Evaporation of snow
453     - aim with thSIce: fix bug in snow-precip.
454    o changes to calc_gw.F
455     - bug fix for w^2 term near the bottom boundary
456     - (hopefully) improve the lateral slip boundary condtions for use with
457        partial/looped cells
458      - because the bug fix changes two verification experiments anyway (exp5
459        and plume on slope), change the lateral boundary condition from half slip
460        to the value of no_slip_sides
461    o ebm package wasnt quite up to the parallel task. Fixed that.
462    o Adjoint of EBM package + verification
463      * TLM OK
464      * ADM not sufficient accuracy yet (needs further testing)
465    
466    checkpoint53b_post
467    o Commiting new energy balance model to repository
468      * package is pkg/ebm
469      * verif. is verification/global_ocean_ebm
470      * references are in ebm_driver.F
471    C      * X. Wang, P. Stone and J. Marotzke, 1999:
472    C        Global thermohaline circulation. Part I:
473    C        Sensitivity to atmospheric moisture transport.
474    C        J. Climate 12(1), 71-82
475    C      * X. Wang, P. Stone and J. Marotzke, 1999:
476    C        Global thermohaline circulation. Part II:
477    C        Sensitivity with interactive transport.
478    C        J. Climate 12(1), 83-91
479    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
480    C        Destabilization of the thermohaline circulation
481    C        by atmospheric eddy transports.
482    C        J. Climate 7(12), 1870-1882
483    o Will need long integration testing.
484    checkpoint53b_pre
485    
486    o created pkg/mom_common in preparation for variable viscosity code
487    o renamed and split ini_mnc_io
488    o pkg/land: only liquid water can diffuse or run-off
489    o AIM using land: soil wetness availability account for snow
490    o added printMapIncludesZeros to EEPARMS namelist
491    
492    checkpoint53a_post
493    o restore TAMC compatiility for exf_constants.h
494      (no usage of _d in .h)
495    o Additional storing in KPP in an attempt to fix
496      TAMC problem with adjoint of KPP code.
497      (no success...)
498      Identical code works fine with TAF.
499    o Fixed verification/natl_box_adjoint experiments.
500      Initial conditions for Experiments 4 and 5 are now
501      set to "SEAICE_initialHEFF=0", which is more reasonable,
502      and hence gives results closer to that of Experiment 2.
503      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
504    
505    checkpoint53
506    o stable checkpoint with up to date adjoint
507      TLM tests only run for 1st grdchk at the moment. Its unclear if
508      this is a code problem or a problem with resetting code for g_
509      variables that is being autogenerated wrong.
510      Otherwise:
511       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
512       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
513         are both still in chaos following their security messes.
514    
515    checkpoint52n_post
516    o various build (mostly genmake2) changes including:
517      - ability to build/run more easily within Cygwin and MacOS X
518      - more complicated Makefiles with a stronger dependence on Gnu Make
519    o pkg/seaice modifications
520      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
521        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
522        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
523      - changed proxy for geostrophic velocity and updated
524        verification/lab_sea/results/* accordingly
525      - removed ADI dynamic solver from pkg/seaice
526      - replaced all occurrences of 1/CSTICE or 1/CSUICE
527        they caused a segmentation fault under certain circumstances
528      - removed unused field WATR
529    o bug fix in exf-package:
530      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
531         now reflect that.
532    o small fixes in the cal-package:
533      - set reference date to first of January for the 'model'-calendar
534      - failing of cal_CheckDate in cal_FullDate now actually results in a
535        warning
536    o small modifications in exf-package to increase flexibility:
537      - change climtempfreeze from a constant to a runtime parameter that
538        is specified in data.exf_clim (default = -1.9)
539      - introduce runtime parameter windstressmax (default = 2.0) that is
540        specified in data.exf
541    o fix in pkg/thsice:
542      - update Evap (Tsf changes) to be consistent with Latent heat flux
543      - maintain snow precipitation unchanged (even if Tsf >=0).
544     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
545    
546    checkpoint52m_post
547    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
548      this does not change any of the results, because myIter=0 in swfrac always
549      lead to jwtype=2 (the default anyway), but the call makes little sense
550      as a default
551    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
552    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
553      atmospheric model (AIM) to use it ; add a "slab ocean" component.
554    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
555    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
556    o extending useSingleCpuIO option to work with new exch2 I/O format
557      - old-style, missing-tile I/O is still accessible by defining CPP
558        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
559    o monitor package can write to NetCDF files and/or STDOUT
560    o fix re-definition bug in MNC_GRID_INIT_ALL()
561    o doc/api_reference added
562      - a framework for building an API Reference Manual using all
563        the "protex" comments embedded in the code
564      - see pkg/generic_advdiff, pkg/mnc for examples
565    o MNC:
566      - make myThid the last argument for all subroutines
567      - new default for the grid files: NO halos
568      - add useMNC and other run-time flags
569      - separate per-file-group handling of the unlimited dimension
570      - early initialization of MNC w/ flags read at the eeboot stage
571        and lookup tables set in initialize_fixed
572      - write all MNC output to a freshly-created directory
573    o thermodynamics sea-ice (thsice) is now tested with testreport.
574    o test exp. advect_cs: use the standard cs32 grid ; update output.
575    o Added functionality to grdchk:
576      pick global i,j,k position (or nearest wet) where to perform check.
577    
578    checkpoint52l_post
579    o new land formulation:
580      a) use ground enthalpy as prognostic variable to ensure exact
581         energy conservation.
582      b) account for water temperature and for latent heat of freezing
583         in all processes (rain, run-off, ground storage)
584      c) compute surface and ground temperature implicitly.
585    o aim_v23 modification for new land model:
586      a) Treat separately land / ocean / sea-ice surface fluxes
587         to allow implicit computation of land & sea-ice surface temp.
588      b) add snow precipitation.
589    checkpoint52l_pre
590    
591    o fix problem (when 1 tile is empty) in min/max monitor.
592    o fix bug in timeAve (u,vZetatave in common block)
593    o no restoring terms under ice for pkg/seaice
594    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
595    o bug fix for pkg/seaice pickups
596    o change MNC call locations and add coordinate attributes
597    o mask vorticity at the corner ; affects global_ocean.cs output
598    o fix ini_curvilinear_grid ; test CS experiments with mpi
599    o aim.5l_cs: modify sea-ice fraction input file ; update output
600    o exf: Adding simple range check routine for exf fields after read
601    
602    checkpoint52k_post
603    o removed top-level directory "diags"
604      - we migrated these functions to pkg/timeave a long time ago
605    o fixed bug introduced in pkg/monitor
606    o accuracy ctrlprec = 32 insuffient for gradient checks using
607      averaged fields (I/O via cost_averages)
608      -> use ctrl.h in active_file*.F to control I/O precision.
609    o paramter list of CALL ADTHE_MAIN_LOOP
610    o added initial do_the_model_io to ecco
611    o set all ...Freq to zero after cost_final
612      taveFreq, dumpFreq, pChkptFreq
613    o MAIN and ECCO differentiability restored
614    
615    checkpoint52j_post
616    o fix nchklev in tamc.h for global_ocean...
617    o Bringing flow and store directives up-to-date
618    o Really weird thing!
619      call do_the_model_io from the_main_loop with parameters
620      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
621      TAF places a faulty re-call of initialise_varia
622      after cost_final call which should not be there!
623    checkpoint52j_pre
624    
625    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
626      error messages
627    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
628    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
629      debug output
630    o modfied mdsio_writefield.F to handle non-global files under exch2
631    o update AIM Cubed-Sphere exp (aim.5l_cs):
632      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
633    o update AIM Equatorial Channel exp:
634      use standard aim_v23 pkg and change the SST fields to be more realistic.
635    o globalFile now works with exch2
636    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
637      mon_vort3.F to make exch2 friendly with >1 tile per cube face
638    o limit timeave output for hi-res integrations
639    
640    checkpoint52i_post
641    o removed CPP_EEOPTIONS.h from verification/*/code
642    o updated the tiling for global_ocean_pressure
643    checkpoint52i_pre
644    
645    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
646      the old pkg/aim).
647    
648    checkpoint52h_pre
649    o shortened offending lines in exch2_send_rx?.template
650    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
651    o genmake2: add build & execute test for NetCDF code
652    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
653      old grid files, moved CPP_EEMACROS.h to pkg/exch2
654    o added useSingleCPUIO flag to monitor.F and mon_out.F
655    o added temporary hack for sea-ice dynamics on the cube:
656      metric terms are ignored and it is assumed that
657      there is no sea-ice on cube faces 1, 2, 4, and 5.
658    
659    checkpoint52f_post
660    o added exch2 cube routines to pkg/exch2
661    o modified hs94.cs-32x32x5 to use it
662    o added new grid files to hs94.cs-32x32x5
663    checkpoint52f_pre
664    
665    checkpoint52e_post
666    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
667      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
668    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
669      to work with implicit vertical advection and AB ;
670    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
671    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
672     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
673    checkpoint52e_pre
674    
675    o fix bug in impldiff when Nr=1 or Nr=2.
676    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
677    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
678    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
679      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
680    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
681    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
682    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
683    
684    checkpoint52d_post
685    o re-tiled many expts to allow comparison in multi-processor mode
686      - updated output accordingly
687      - changed hs94.128x64x5 to use intial T from file rather than use the
688        random number generator
689    o add infrastructure in model routines for fizhi and gridalt packages
690    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
691    o changes to permit hi-res, cubed-sphere, configuration
692      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
693      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
694      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
695        of surface winds for the cube
696      (A verification experiment, based on global_ocean.cs32x15, but with
697       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
698       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
699       complete with example surface forcing files and matlab scripts to look
700       at the output and compare it with that of global_ocean.cs32x15.)
701    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
702       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
703       to conform to the common rule.
704    o check-in the first version of the coupler + interfaces for multi-components
705       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
706       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
707       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
708       - ocean and atmos. share the same horizontal grid (no interpolation).
709       - exchanges between component and coupler is done in forward_step
710    o new verification experiment, cpl_aim+ocn:
711       coupled ocean - AIM atmosphere on cs32 grid.
712    
713    checkpoint52d_pre
714    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
715    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
716    
717    checkpoint52c_post
718    o Fixing OPTIONS files for use of exf:
719      - ALLOW_ECCO not needed
720      - ECCO_CPPOPTIONS.h should not be included from
721        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
722        as has been the case in the past
723      - All cal/exf related options are currently set in
724        single header file. Should remain so until we
725        agree on a consistent new policy.
726    o Removed all CPP options for cal package.
727      cal has no more CPP options.
728    o modified STOREs in GAD_ADVECTION
729    o corrected key comp. for passkey
730    
731    checkpoint52b_post
732    o new version: "thsice" of thermodynamic sea-ice pkg:
733     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
734     - modify fluxes but do not change theta directly;
735     - light cleaning of bulk_force pkg (still needed with thsice).
736     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
737       + output_thsice.txt to test thsice & bulk_force pkgs.
738    o put back grid & coriolis monitor output.
739    checkpoint52b_pre
740    
741    o call "do_the_model_io" at the beginning (=> dump initial state)
742    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
743    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
744      (need info on NUMBER_OF_PTRACERS)
745    o missing PTRACERS headers in some routines
746    o default tamc.h in pkg/autodiff supposed to crash
747      to ensure proper customization
748    
749    checkpoint52a_post
750    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
751      - moved surfaceTendencyTice from pkg/seaice to main code
752      - subroutine FREEZE_SURFACE now limits only surface temperature
753        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
754        => new output.txt for global_ocean.cs32x15 & global_with_exf
755      - keep the old version of FREEZE for backward compatibility;
756        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
757      - corresponding modifs for TAF directives
758    o added surface flux output variables to TIMEAVE_STATVARS
759    o time-averaged output for pkg/ptracers
760    o fix problem with ECCO-related divided adjoint
761      snapshot file was missing some ad-variables,
762      but no warning issued by TAF
763    
764    checkpoint52a_pre
765    o some bug fixes for #undef REAL4_IS_SLOW
766    
767    checkpoint52 = ecco_c52_e35
768    o after testing adjoints of checkpoint51u_post
769    
770    checkpoint51u_post
771    o this is the post-merge tag of the ecco-branch
772      (needs another clean checkout and re-testing)
773    o various natl_box_adjoint configs and results
774      but no input fields
775    o obcs adjoint not yet merged!
776    o adding ECCO global 1x1 and 2x2 degree configs
777    o updated/extended some store directives for seaice
778    o pkg/ecco now containes ecco-specific part of cost function
779    o top level routines the_main_loop, forward_step
780      supersede those in model/src/
781      previous input data.cost now in data.ecco
782      (new namelist ecco_cost_nml)
783    o in ctrl/ cleaned some cross-dependencies and updated CPP options
784    
785    checkpoint51t_post
786    o this is the pre-merge tag of the ecco-branch
787    
788    checkpoint51s_post
789    o cleanup: removed various obsolete #define-s
790    o pkg/grdchk
791      - renamed 'ph-grd 3' to 'grad-res'
792      - merged from ecco-branch
793        (remaining bug fixes for obcs gradient checks)
794      - additional high-precision output for testreport
795        (grep for 'precision_grdchk_result')
796    
797    checkpoint51r_post
798    o cleaned up or removed CPP_OPTIONS.h files
799    o updated results for some of the tests to reflect the new
800      optfiles (-ieee: -O0 instead of -O3)
801    
802    checkpoint51q_post
803    o cd_code:
804      - moved cd_scheme.F -> cd_code_scheme.F
805      - separate read_checkpoint from cd_code_ini_vars.F
806      - separated cd_code part from write_checkpoint
807      - updated AD_SOURCE, generated .flow
808      - added CD_CODE_VARS.h to the_main_loop
809      - Moving cd_code specific store dir.s to pkg/cd_code
810    o ctrl package totally restructured
811      - pack/unpack now optional and decoupled from
812        xx_/adxx_ I/O
813      - ctrl_pack/unpack cleaned
814        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
815      - confined inclusion of AD_CONFIG.h to where necessary.
816    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
817    
818    checkpoint51p_post
819    o create initial cd_code package
820      - WARNING: the initialization of fields within packages
821        is broken because INI_FIELDS (where READ_CHECKPOINT is
822        called) is called *before* PACKAGES_INIT_VARIABLES.
823        This seems to be backwards since
824        1) its important to initially zero the entire field including
825           the "halo" region
826        2) zeroing needs to be done *before* reading pickup info
827           and the pickup call might or might not happen in any
828           particular run
829      - this needs an overhaul for R2
830    o cleanup verification/*/code/GMREDI_OPTIONS.h
831    o cleanup testreport
832    
833    checkpoint51o_post
834    o bringing AD-related verif's up to date with genmake2
835      - carbon/
836      - global_ocean.90x40x15/
837      - hs.94.1x64x5/
838      - (front_relax/ )
839    o (more) consistent directory structure for AD-related verif.'s
840    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
841    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
842    o bug fix in find_alpha.F for MDJWF:
843      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
844        change rho -> rho-rhoConst
845      - replace call find_rho to find_rhonum
846    o initialisation of rFlx extended to full array (required by TAF)
847      and shifted to thermodynamics
848    o removed PTRACERS.h in ptracers routine
849    o added surfacetendencyPtr to S/R parameter list pracers_forcing
850    o Correcting initialisations for fVerU, fVerV.
851    o helping TAF to recognize dependency on kUp for
852      fVerU, fVerV
853    o Replacing delZ by delR in pkg/ctrl/
854    checkpoint51o_pre
855    
856    o undid all of cp51 pending some cleanups and discussion
857    o added the [#include "AD_CONFIG.h"] statement to all files that need
858       it for adjoint/tl #defines
859     o re-worked the build logic in genmake2 to support AD_CONFIG.h
860     o removed tools/genmake since it no longer works
861    
862    checkpoint51n_post
863    o modifications to make FREEZE flux visible to pkg/kpp
864      - moved surfaceTendencyTice from pkg/seaice to main code
865      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
866      - subroutine FREEZE now limits only surface temperature
867        (this means new output.txt for global_ocean.90x40x15,
868         global_ocean.cs32x15, and global_with_exf)
869    o added surface flux output variables to TIMEAVE_STATVARS
870    
871    checkpoint51n_pre
872    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
873    o added [#include "AD_CONFIG.h"] to all files that use the following
874      defines:
875      - ALLOW_ADJOINT_RUN
876      - ALLOW_TANGENTLINEAR_RUN
877      - ALLOW_ECCO_OPTIMIZATION
878    
879    checkpoint51m_post
880    o incorporating changes to get TAMC/TAF working in genmake2
881      - added new TAMC/TAF targets to the Makefile
882      - various cleanups related to package handling
883      - these changes should have no impact on the forward model
884    
885    checkpoint51l_post
886    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
887     - faster algorithm for cal_addtime.F
888     - higher precision arithmetic, where needed
889     - pkg/exf *startdate variables changed from calendar date to
890       model integration time
891    
892    checkpoint51l_pre
893    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
894    o enable to apply restoring on S & T only in a latitude band.
895    o update output (external_forcing_surf modif. change truncation errors)
896       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
897    
898    checkpoint51k_post
899    o change default to: useNHMTerms=.FALSE.
900     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
901       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
902     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
903        exp1, ideal_2D_oce
904     - change data file of oceanic exp (leave the results unchanged for now)
905       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
906    o set gravitySign automatically according to the vertical coordinate used
907      (and change sign: back to "logical" value: +1 when R increases downward)
908    o added an include barrier to the default CPP_OPTIONS.h and
909      removed the #include "PACKAGES_CONFIG.h" from it
910    o fix a bug in mom_fluxform (from chk51j_post)
911    
912    checkpoint51j_post
913    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
914    o adjusted some flow directives (dynamics, thermodynamics)
915    o added cubed-sphere case to test cost function
916    o heckpoint_lev?_directives.h now include
917      pkg-specific directives, whenever those are enabled.
918    o Moving pkg-specific flow directives to corresponding pkg
919      Moving pkg-specific differentiation list to corresponding pkg
920      Moving pkg-specific checkpoint-lev storing to corresponding pkg
921      ---> conventions are
922           - pkg_ad.flow
923           - pkg_ad_diff.list
924           - pkg_ad_check_lev?_dir.h
925    
926    checkpoint51i_post
927    o merge of the branch-genmake2
928      - knowingly breaks the older genmake
929      - automatic generation of all ALLOW_${PKG_NAME} defines
930      - new testreport supersedes older testscript
931    o large number of package inclusion and header cleanups
932    checkpoint51i_pre
933    
934    o new output for adjoin of global ocean vector invariant
935    o fix for checkpoint of thermodynamic seaice and bulk_force
936    o Steph gchem various cleanups
937    
938    checkpoint 51h_pre
939    o fixed some single quotes
940    o modify gchem pkg to be more versatile
941    o modifications to clean up dic pkg
942    o add pkg/cfc
943    
944    checkpoint51g_post
945    o provide links for ARPACK and ADM*TLM
946    o start removing verification/vero/
947    o update AD-related stuff
948      (in particular some IF-statements in model/src/ routines)
949    o adding to verification/global_ocean.90x40x15/ adjoint of
950      vector invariant setup
951    
952    checkpoint51f_post
953    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
954    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
955      of tracer Green's fucntions for ocean inversion project.
956    
957    checkpoint51f_pre
958    o Added on-the-fly spatial interpolation capability
959        "USE_EXF_INTERPOLATION" to pkg/exf.
960      - This is a temporary Cartesian-grid hack until
961        the super-duper ESMF coupler becomes available.
962      - See verification/global_with_exf/README for usage example.
963      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
964        flags and modified pkg/seaice accordingly.
965    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
966        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
967        non-local transport term.
968    
969    checkpoint51e_post
970    o pkg/mom_vecinv:
971      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
972      - add time-ave diagnostic of vorticity advection.
973    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
974    o atmospheric geopotential: - include water vapor effect;
975                                - use p^kappa in p* scaling.
976    o land pkg: read initial state from files.
977    o AIM : add stratospheric drag in the upper level
978    
979    checkpoint51d_post
980    o change function ILNBLNK (=> last non-blank char.) to return zero
981      (instead of the string length) when the string. char is empty
982    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
983    o modif's to restore TAMC compatibility
984      - avoid "_d" constructs in PARAMETER declarations
985      - avoid interrupting lines by comment lines
986    o Use cluster local disks for purely local I/O
987      vs. globally visible disks needed for ctrl stuff
988      (merged from ecco-branch)
989      - new active_file_loc... and mdsio_..._loc routines
990      - affected packages: autodiff, ctrl, grdchk, mdsio
991    
992    checkpoint51c_post
993    o introducing integer flag debugLevel
994      - debLevZero: suppress all output
995      - debLevA: standard
996      - debLevB: equivalent to current debugMode=.TRUE.
997    o introducing pathname variable mdsioLocalDir for mdsio
998      that can be specified at runtime
999      (relevant for cluster I/O to local disk)
1000    `
1001    >>>checkpoint51b_post
1002    adjoint of ptracers
1003    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1004    o extended state in checkpoint_lev?, etc.
1005    o alternative ctrl/cost with tr1 or ptracer
1006    o new comlev1_bibj_ptracers
1007    o new ptracers.flow
1008    o made ptracers_forcing same as external_forcing_s
1009    o added verification for adjoint with ptracers
1010      - adm. grdchk fail so far
1011      - tlm. grdchk OK
1012      - checked tapelev/comlev recomputations: OK
1013    <<<checkpoint51b_pre
1014    
1015    checkpoint51a_post
1016    o added code for biogeochemistry package
1017      - new pkgs: dic, gchem
1018      - new subroutine in ptracers
1019    o modify code for biogeo packages
1020      - in model/src and pkg/ptracers
1021    
1022    checkpoint51
1023    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1024      - autodiff, ctrl, exf, grdchk, seaice
1025      kept separate packages
1026      - cost, ecco, obcs
1027    o updating verification/internal_wave, verification/lab_sea
1028      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1029    
1030    checkpoint50i_post
1031    o Preparing next differentiable checkpoint and sync
1032      of MAIN vs. ecco-branch
1033      - 1st step: this one is differentiable
1034      - 2nd step: next(! not this) checkpoint will have updated packages
1035                  from ecco-branch)
1036    
1037    checkpoint50h_post
1038    o new package "land": provide surface BC for AIM.
1039    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1040    o AIM: use true log-P extrapolation for near surface temp (= as in
1041        F.Molteni paper) ; update aim.5l_cs output.
1042    o New variable in PARM03 for more flexible pickups
1043    o somewhat cleaned package initialisation sequence for
1044      ctrl/ cost/ ecco/ in packages_... routines
1045    
1046    checkpoint50g_post
1047    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1048      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1049      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1050        made the default because of faster convergence than ADI
1051    
1052    checkpoint50f_post
1053    o exf totally restructured
1054      - replaced all exf_set_ routines by one generic exf_set_gen.F
1055        and made sure it's still differentiable
1056      - split exf_getffields.F into new exf_bulkformulae.F
1057      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1058      - updated adjoint/makefile and relevant verif. accordingly
1059    
1060    checkpoint50f_pre
1061     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1062          + change Evap over land. (update aim.5l_cs output)
1063     o added missing .cvsignores and made uniform across expts
1064     o changed configuration of tidal_basin_2d expt
1065     o added pkg/debug functions for tracing code in fatal crashes
1066     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1067     o new fn in pkg/monitor to stop model if solution grows too big
1068     o removed lots of single quotes from comments
1069    
1070    checkpoint50e_post
1071    o make KPP work with PTRACERS
1072     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1073       nearly a copy of kpp_transport_s
1074     - there is no analogue to SurfaceTendencyS, so I have to use
1075       gPtr(of the surface layer) instead
1076    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1077    checkpoint50e_pre
1078    
1079    checkpoint50d_post
1080    o change kpp output from multiple-record state files to single-record state
1081      files analogous to write_state.F
1082    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1083      analogous to the cg2d-related output.
1084    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1085      so that writing to internal file fn (with length 512) fails.
1086    checkpoint50d_pre
1087    
1088    checkpoint50c_post
1089    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1090    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1091    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1092    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1093    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1094    
1095    checkpoint50c_pre
1096    Merging from release1_p13:
1097    o bug fix for pkg/seaice dynamic solver
1098    o Added SEAICE_initialHEFF to pkg/seaice
1099    
1100    checkpoint50b_post
1101    o store u*,v* in gU,V instead of in guNm1,gvNm1
1102    o in order to put the momForcing out of the Adams-Bashforth:
1103      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1104      to timestep.F
1105    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1106    o re-generate output for highly sensitive test-exp:
1107       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1108    
1109    checkpoint50b_pre
1110    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1111    o corrected CPP option mismatch in exf_Bulk... functions for case
1112      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1113    
1114    checkpoint50a_post
1115    o Bug fix for merging between c50 and KPP.
1116      ikey was passed from thermodynamics to kpp_calc via
1117      common block rather than being recomputed in kpp_calc,
1118      in contradiction with new key itdkey.
1119      New key ikppkey created, and tamc.h headers updated.
1120    
1121    checkpoint50
1122    - 2nd step of merge with ecco-branch:
1123      merge changes in ecco-branch back into main trunk
1124    - bug fix in find_alpha
1125    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1126    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1127    - merged some sliced AD support routines
1128    
1129    checkpoint49
1130    merged from ecco-branch:
1131    o exf:
1132      - Enable initialisation of forcing fields to constant
1133        (runtime) values.
1134      - in exf_getffields.F
1135        Reduce i-/j-loop to interior domain, discarding overlaps.
1136        That also fixes wrong TAF-key computations for key_1, key_2
1137        with bulf formulae.
1138      - exf_init.F modify #ifdef for exf_init_evap
1139      - exf_getffieldrec.F, ctrl_getrec.F
1140        The following INT-usages are not safe:
1141          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1142          fldcount = int(fldsecs/fldperiod) + 1
1143        and were modified.
1144    o autodiff: checkpoint_lev...
1145      - updated storing for bulk formulae (some arrays were missing)
1146      - added state for seaice package
1147      - synchronized with main branch
1148    o DIVA:
1149      Modif.s in
1150      - the_main_loop.F
1151      - the_model_main.F
1152      and added cost_final_restore.F cost_final_store.F
1153      o With these changes, it is possible to fully separate
1154        the first forward run to compute the cost function (mdthe_main_loop)
1155        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1156        into separate model executions.
1157        This enables better tuning of DIVA to given queue sizes.
1158      o Loss of cost function value in consecutive DIVA runs is
1159        fixed by storing to 'costfinal' file.
1160      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1161        beginning/end of adjoint integration is accounted for.
1162      The current changes apply to TAF-1.4.26.
1163      TAF has one remaining bug, requiring one manual change
1164      (see MITgcm manual).
1165    o cal: synchronized between MAIN and ecco-branch
1166    
1167    checkpoint48i_post
1168    o Changes to restore differentiability of code w.r.t. previous tag
1169      (mostly adding new routines to make list and replacing
1170      pressure by totPhiHyd).
1171    o Updated and merged grdchk package
1172      - has both ADM and TLM checks
1173      - works for single- and multi-proc.
1174      - output cleaned
1175      - worked successfully for parallel DIVA
1176    o genmake:
1177      - Adding -platform=SP4
1178      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1179    o Modif. for DIVA:
1180      ctrl_unpack should not be called in intermediate DIVA interval.
1181      (similar thing would apply for active files such as
1182      tbar, sbar, psbar, which should not be reinitialised;
1183      only relevant for ecco-branch)
1184    
1185    checkpoint48h_post
1186    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1187    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1188    o Added SEAICE_initialHEFF to pkg/seaice
1189    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1190    
1191    checkpoint48g_post
1192    --- EOS:
1193    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1194      store total Potential in totPhyHyd for diagnostics & EOS.
1195    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1196    --- Pressure/geopotential gradient:
1197    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1198    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1199      ( changes results of global_ocean_pressure )
1200    o NLFS + z-coord.: add eta*Rho' contribution.
1201    o accurate phiHyd when using interface-W at the middle between 2 centers
1202     ( changes results of ideal_2D_oce )
1203    o includes r* 2nd term in potential gradient.
1204    
1205    checkpoint48f_post
1206    Merging from release1_p12:
1207    o Modifications for using pkg/exf with pkg/seaice
1208      - improved description of the various forcing configurations
1209      - added basic radiation bulk formulae to pkg/exf
1210      - units/sign fix for evap computation in exf_getffields.F
1211      - updated verification/global_with_exf/results/output.txt
1212    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1213      (SBO) core products, including oceanic mass, center-of-mass,
1214      angular, and bottom pressure (see pkg/sbo/README.sbo).
1215    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1216      to avoid negative values in shallow regions.
1217      - updated verification/natl_box/results/output.txt
1218      - updated verification/lab_sea/results/output.txt
1219    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1220    o Added useSingleCpuIO option (see PARAMS.h).
1221    o Updated useSingleCpuIO option in mdsio_writefield.F to
1222      work with multi-field files, e.g., for single-file pickup.
1223    o pkg/seaice:
1224      - bug fix in growth.F: QNET for no shortwave case
1225      - added HeffFile for specifying initial sea-ice thickness
1226      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1227    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1228      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1229    o pkg/seaice:
1230      - adjoint-friendly modifications
1231      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1232    
1233    checkpoint48e_post
1234    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1235    o dynamics: change definition of computational domain & adapt mom_fluxform
1236      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1237    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1238        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1239        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1240        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1241        inverted_barometer solid-body.cs-32x32x1
1242      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1243    
1244    checkpoint48d_post
1245    o in preparation for r*:
1246     a) use pre-computed gradient of hydrostatic potential:
1247        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1248     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1249        => affects results of glob_oce_pressure (different truncation error)  
1250      update output.txt of ideal_2D_oce & global_ocean_pressure
1251    
1252    checkpoint48d_pre
1253    o in preparation for r*:
1254      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1255      pass the 2 comp. of the grad. as arguments to momentum S/R.
1256      but for the moment, only used if it does not change the results.
1257    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1258    
1259    checkpoint48c_post
1260    Modifications in treatment of initial flux forcing controls
1261    to avoid extra storing of flux fields.
1262    
1263    checkpoint48c_pre
1264    o Added tidal_basin_2d experiment (currently 1D!)
1265    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1266    
1267    checkpoint48b_post
1268    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1269     (modification to pressure gradient not yet implemented)
1270    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1271      (for U & V) that are used for vertical advection of momentum.
1272    
1273    checkpoint48a_post
1274    o In preparation for r*, use temp. array to compute vertical transport
1275       in flux-form momentum pkg. => change results of few test-exp.
1276      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1277                        lab_sea, natl_box & plume_on_slope
1278    
1279    checkpoint48
1280    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1281    
1282    checkpoint47j_post
1283    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1284    o moved adexch from forward_step to addummy_in_stepping
1285    o added exch in ctrl_map_...
1286    o aveFreq.=0. at end of cost_final to avoid overwrite in
1287      reverse checkpointing loop
1288    o Yet more changes in gmredi:
1289      * adgmredi_calc_tensor
1290        avoiding all recomputation of gmredi_slope_limit
1291      * adgmredi_x/y/rtransport
1292        added flag for excessive storing to avoid recomp. of
1293        u/v/rtans, dTdx/y/z
1294        -> this is not really necessary and very memory-consuming
1295      * adgmredi_slope_psi:
1296        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1297      * gmredi_slope_limit
1298        re-activated full calculation of taperfct for case 'ac02'
1299    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1300    
1301    checkpoint47i_post
1302    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1303    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1304      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1305    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1306    o gmredi: fix few bugs.
1307    
1308    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1309    This will be a good checkpoint to plug into the ecco-branch.
1310    o few modif.'s to get latest version adjointed
1311      (mainly kick out code in ini_linear_phisurf)
1312    o modif's to run adjoint with exactConserv
1313    o case GM_BOLUS_ADVEC should be cleaned
1314      S/R gmredi_slope_psi should be cleaned
1315    o verification/carbon now has exactConserv=.TRUE.
1316    
1317    checkpoint47g_post
1318    o time-average AIM output: becomes independent from statvars time-average
1319      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1320    o After TAF bug fix:
1321      Tested adjoint of gmredi package.
1322      Tests were done with checkpoint47 rather than with latest
1323      checkpoint47f_post since the latter is broken for the adjoint
1324      verification/carbon/ contains both ADM and TLM gradient checks.
1325    Here they are, before they get changed/lost/stolen.
1326    Mostly modif.'s to fix numerical sensitivities.
1327    Gradient checks OK for
1328    - GM_taper_scheme:
1329      * clipping
1330      * ac02
1331      * linear
1332      * glw91
1333      * dm95
1334      * ldd97
1335    - GMREDI_OPTIONS:
1336      * GM_VISBECK_VARIABLE_K
1337      * GM_NON_UNITY_DIAGONAL
1338      * GM_EXTRA_DIAGONAL
1339      * GM_BOLUS_ADVEC
1340    in conjunction with data.gmredi parameters to be checked in
1341    in a few minutes under verification/carbon/code/
1342    
1343    checkpoint47f_post
1344    Merging from release1_p10:
1345    o modifications for using pkg/exf with pkg/seaice
1346      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1347        and SEAICE_EXTERNAL_FLUXES
1348      - pkg/exf CPP options EXF_READ_EVAP and
1349        EXF_NO_BULK_COMPUTATIONS
1350      - usage examples are Experiments 8 and 9 in
1351        verification/lab_sea/README
1352      - verification/lab_sea default experiment now uses
1353        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1354    
1355    checkpoint47e_post
1356    o created a tag prior to creating a branch
1357    
1358    checkpoint47d_post
1359    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1360      at the bottom boundary had an erroneous half slip boundary condition
1361    o added bottom drag and no slip boundary condition capabilities to
1362      oceanic pressure coordinates code
1363    o added new verification experiment global_ocean_pressure, this experiment is
1364      also described in the tutorial section of the manual
1365    checkpoint47d_pre
1366    
1367    checkpoint47c_post
1368    o Added a verification experiment for a global cubed-sphere ocean run
1369      -  verification/global_ocean.cubed32x32x30
1370      -  uses pkg/therm_seaice and pkg/bulk_forcing
1371    
1372    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1373    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1374      when using P-coordinate; only implemented for atmospheric config.
1375    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1376      NOTES: requires option NONLIN_FRSURF to be "#define".
1377    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1378    
1379    checkpoint47b_post
1380    Merging from release1_p9:
1381    o pkg/seaice
1382      - removed GOTO's and added taf directives
1383      - double precision constants to reduce the g77 (Linux)
1384        to F77 (SGI) differences reported in release1_p8
1385    o tools/genmake
1386      - added SGI options
1387    o verification/testscript
1388      - updated to that of checkpoint47a_post
1389    o verification/global_ocean.90x40x15/input/eedata
1390      - modified for SGI f77 compatibility
1391    o verification/lab_sea
1392      - added description of sea-ice model
1393      - added missing matlab routines
1394      - added test of thermodynamics parallelization
1395    
1396    checkpoint47a_post
1397    o new pkg: aim_v23
1398     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1399       for now, keep the same surface forcing as before.
1400     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1401     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1402     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1403    o add diagnostic of surface correction term in monitor output
1404    
1405    o bulk_force and therm_seaice
1406    - Two packages:  bulk_force (Bulk forcing)
1407      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1408    - Earlier integration from Stephaine Dutkiewicz
1409      and Patrick Heimbach.
1410    - Two ifdef statements for compile time,
1411       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1412    
1413    checkpoint47
1414    differentiable version of checkpoint46n_post
1415    o bug fix in quasihydrostaticterms
1416    o * "clean" adjoint code (in terms of extensive recomputations)
1417        can now be obtained for all GMREDI options (i.e. for
1418        - GM_VISBECK_VARIABLE_K
1419        - GM_NON_UNITY_DIAGONAL
1420        - GM_EXTRA_DIAGONAL
1421        - GM_BOLUS_ADVEC )
1422      * However, wrong gradient check problem remains unsolved.
1423      * New CPP options have been introduced for different
1424        tapering schemes
1425    o external_fields_load now part of differentiation list
1426    o pressure needs multiple storing;
1427      would be nice to have store_pressure at beginning or
1428      end of forward_step, e.g. by having phiHyd global (5-dim.)
1429      (NB: pressure is needed for certain cases in find_rho,
1430      which is also invoked through convective_adjustment).
1431    o recomputations in find_rho for cases
1432     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1433    o #define ATMOSPHERIC_LOADING should be differentiable
1434    o ini_forcing shifted to begining of initialise_varia
1435    o Incorporating QNVS line search routines into MITgcm
1436      (this is separate code, and therefore not under pkg)
1437      lsopt/, optim/
1438    o Updated verification/carbon/
1439      - #define GM_VISBECK_VARIABLE_K
1440      - GM_taper_scheme    = 'ldd97'    
1441    
1442    checkpoint46n_post
1443    Merging from release1_p8:
1444    o verification/natl_box:
1445      updating new external_fields_load routine
1446    o New package: pkg/seaice
1447      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1448      The sea-ice code is based on Hibler (1979-1980).
1449      Two sea-ice dynamic solvers, ADI and LSR, are included.
1450      In addition to computing prognostic sea-ice variables and diagnosing
1451      the forcing/external data fields that drive the ocean model,
1452      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1453      The implied surface heat flux is then stored in variable
1454      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1455      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1456      non-local transport term.  Because this call precedes model
1457      thermodynamics, temperature under sea-ice may not be "exactly" at
1458      the freezing point by the time theta is dumped or time-averaged.
1459      N.B.: fairly large differences in accuracy occur across
1460            different platforms/compilers; comparison between
1461            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1462            generated output gives:
1463       T           S           U           V
1464      C D M    c        m  s        m  s        m  s        m  s
1465      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1466      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1467      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1468    
1469      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1470    o GAD:
1471      - generated new common blocks to account for call of
1472        same gad routines with differing traceridentities
1473        (needed to modify tracerIdentity indices in GAD.h)
1474      - generated separate common blocks for case useCubedSphereExchange
1475        (Department of Futurology)
1476      - parameter lists to gmredi_?transport: added tracerIdentity
1477      - added new key indices to tamc.h
1478    o external_fields_load:
1479      - added this routine to TAF list
1480      - needed to make some common blocks global and additional storing
1481        along the same lines as exf package (checkpoint_lev?_directives.h)
1482    o exf:
1483      updated external forcing package
1484      - bug fixes carried over from ecco-branch
1485        (missing OBCS_OPTIONS.h in two routines)
1486      - enable easy to use "no forcing".
1487      - added exf I/O for atmospheric loading
1488      - added exf I/O for runoff data
1489      - transfered scaling between exf <-> MITgcm to exf namelist
1490    o Adding new verification experiment global_with_exf.
1491      This verification experiment is almost identical to the
1492      global_ocean.90x40x15 experiment, except that it uses
1493      the exf (and cal) package instead of the
1494      external_fields_load routine (cf README file).
1495    
1496    checkpoint46m_post
1497    o modified testscript to return -- when there are no lines of "%MON" output
1498    o added new flag "quasiHydrostatic" for QH mode
1499      and new routine quasihydrostaticterms()
1500    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1501      New routine: mom_u_coriolis_nh()
1502    o fixed sign of non-hydrostatic metric terms in u and v equations.
1503      Depend on correct sign of gravitySign.
1504    o added work.pc* to .cvsignore in aim directories using ifc
1505    o introduced flag for controllin non-hydrostatic metric terms
1506    o removed gravitySign from PARM04
1507    o switched to g77/ifc from pgf77 in aim experiments
1508    
1509    checkpoint46l_post
1510    o made convective adjustment work with pressure coordinates:
1511     - changed the direction of k-loop in convective_adjustment.F for the
1512       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1513     - adjusted the reference pressure k-index in convective_adjustment.F
1514     - adjusted the convection condition in convect.F (in analogy to
1515       calc_ivdc.F)
1516     - convective_adjustment no longer computes anything on the halos
1517     - removed the warnings about negative salinity from find_rho.F and
1518       find_alpha.F; instead the new routine look_for_neg_salinity, called
1519       at the beginning of find_rho, find_alpha, and find_beta, does a
1520       check of the entire slice, if CPP-option
1521       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1522    checkpoint46l_pre
1523    
1524    checkpoint46k_post
1525    o fixed the verification/global_ocean.90x40x15 experiment:
1526     - new bathymetry (the world according to A., JMC, and M.)
1527     - new initial fields and forcing fields (*.bin files)
1528     - new POLY3.COEFFS (for the next release one should switch to a full
1529       equation of state: JMD95P or MDJWF)
1530     - fixed several errors and redundancies in the data file
1531     - experiment uses looped cells
1532     - added matlab directory with diagnostic scripts for plotting of output
1533    
1534    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1535     - read AIM physics parameters from a file (data.aimphys)
1536     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1537    
1538    checkpoint46j_post
1539    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1540    o move wVel computation at the end of the time step, in S/R integr_continuity
1541    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1542    o update timeave pkg for wVel diagnostic.
1543    checkpoint46j_pre
1544    
1545    checkpoint46i_post
1546    o Clean up AIM package (and keep the results unchanged):
1547      include CPP_OPTION and use IMPLICT NONE in all routines ;
1548      declare all the variables _RL ; use _d 0 for all numerical constants.
1549      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1550    
1551    checkpoint46h_post
1552    o cleaned up the use of rhoNil and rhoConst.
1553      - rhoNil should only appear in the LINEAR equation of state, everywhere
1554        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1555        and the dynamical equations are all divided by rhoConst
1556    o introduced new parameter rhoConstFresh, a reference density of fresh
1557      water, to remove the fresh water flux's dependence on rhoNil. The default
1558      value is 999.8 kg/m^3
1559    o cleanup up external_forcing.F and external_forcing_surf.F
1560      - can now be used by both OCEANIC and OCEANICP
1561    checkpoint46h_pre
1562    
1563     Added code to convert surface volume flux (fresh water) into
1564     a mass flux when using P coordinates in the ocean (OCEANICP).
1565     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1566    
1567    checkpoint46g_post
1568    o Include a new diagnostic variable phiHydLow for the ocean model
1569      - in z-coordinates, it is the bottom pressure anomaly
1570      - in p-coordinates, it is the sea surface elevation
1571      - in both cases, these variable have global drift, reflecting the mass
1572        drift in z-coordinates and the volume drift in p-coordinates
1573      - included time averaging for phiHydLow, be aware of the drift!
1574    o depth-dependent computation of Bo_surf for pressure coordinates
1575      in the ocean (buoyancyRelation='OCEANICP')
1576      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1577        Theta, Salinity, and Pressure in the parameter list. This routine is
1578        presently contained in find_rho.F. This routine does not give the
1579        correct density for 'POLY3', which would be a z-dependent reference
1580        density.
1581    o cleaned up find_rho
1582      - removed obsolete 'eqn' from the parameter list.
1583    o added two new verification experiments: gop and goz
1584      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1585    checkpoint46g_pre
1586    
1587    checkpoint46f_post
1588    o Enable tangent linear (forward mode) gradient checks:
1589      - extended active file handling to g_... files
1590      - added TANGENT_SIMULATION to theSimulationMode
1591      - extended grdchk package accordingly
1592    o added tangent linear setup in verification/carbon/code_ftl
1593    o added adjoint setup in verification/front_relax/code_ad
1594    
1595    checkpoint46e_post
1596    o Added new equation of state -> MDJWF
1597      - EOS of McDougall et al., 2002, JAOT, submitted
1598      - caveat: the equation of state is only valid for a smaller (more
1599        realistic?) range of values than JMD95P/Z and UNESCO
1600      - added masks to the calculation of pressure in store_pressure
1601      - added more check values for density in check_eos (ini_eos.F), some of
1602        the old check values are out of the range of the MDJWF-eos, so don't
1603        expect perfect matches for those
1604    checkpoint46e_pre
1605    
1606    checkpoint46d_post
1607    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1608      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1609      case of pressure coordinates. eosType='JMD95Z' in
1610      combination with buoyancyRelation='OCEANICP' now causes an error.
1611    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1612      in find_alpha/beta.
1613    checkpoint46d_pre
1614    
1615    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1616      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1617    
1618    checkpoint46c_post
1619    o Changes necessary for ocean in p-coordinates
1620     -  Added new buoyancy relation = 'OCEANICP'
1621     -  Added new parameters = gravitySign (this used to be contained inside
1622        the factor dRdZ which I added when we first switched to R coordinates).
1623     X GM/Redi is not compatible (yet)
1624     X bottom drag and no-slip need to be debugged.
1625    checkpoint46c_pre
1626    
1627    checkpoint46b_post
1628    o Added new equation of state -> JMD95Z and JMD95P
1629      - EOS of Jackett and McDougall, 1995, JAOT
1630      - moved all EOS parameters into EOS.h
1631      - new routines ini_eos.F, store_pressure.F
1632    o Added UNESCO EOS, but not recommended because it requires
1633      in-situ temperature (see JMD95)
1634    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1635      unesco.f to be used with POLY3
1636    checkpoint46b_pre
1637    
1638    checkpoint46a_post
1639    o Added (atmospheric) pressure loading
1640      - new field in FFIELDS.h, etc...
1641      - new cpp flag ATMOSPHERIC_LOADING
1642    o Changed hFacC to _hFacC in calc_phi_hyd.F
1643    o Added SHORTWAVE_HEATING to some files for consistency
1644    checkpoint46a_pre
1645    
1646    checkpoint46
1647    further merges from release1_p5
1648    o new ctrl package
1649      - adopted from ECCO environment to enable optimization
1650      - added Eliassen Palm fluxes to controls
1651    o added Eliassen Palm flux controls to gradient check package
1652    o cost package
1653      - Compatible with new ctrl package
1654      - added Eliassen Palm cost hooks
1655      - modif's of existing cost functions
1656    o Adjoint-related bug fixes in kpp:
1657      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1658      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1659    o autodiff package
1660      - flow directives:
1661        + new for S/R do_the_model_io
1662        + enhanced for S/R checkpoint
1663        + new gmredi.flow
1664      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1665        disable adcommon.h/g_common.h by default.
1666      - fixed problem for adjoint of global_max
1667    o modified verification/carbon/
1668    o New setup for adjoint of global_ocean
1669    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1670    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1671    o incorporated hooks for sponge layer code (external_forcing.F)
1672    
1673    checkpoint45d_post
1674    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1675    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1676      (affects plume_on_slope "cg2d" output)
1677    o add new parameter deltaTfreesurf for free-surface time stepping
1678    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1679    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1680    o change phiMin in exp1 (to agree with documentation)
1681    o add new flags:
1682     - T,S forcing inside/outside Adams-Bashforth
1683     - turn off temp,salt advection and/or forcing
1684     - for each tracer, define internal flag for multiDimAdvection & A-B
1685    o monitor: change definition of KE to check conservation of Energy
1686    
1687    checkpoint45c_post
1688    o Removed f90 comments ("!")
1689    o Modified initialisations to enable exf package for MITgcm
1690      (without invoking ECCO_PACKAGE).
1691    o modifications to gradient check package (Martin Losch)
1692      - enable centered differences
1693      - modified format of standard output
1694    
1695    checkpoint45b_post
1696    o cleaned exchange calls in cg2d
1697    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1698    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1699      to configure barotropic setup (Martin Losch)
1700    o moved some initialisations within bi,bj loop in dynamics
1701      (TAF flow dependency)
1702    o in initialise_varia, moved call packages_init_variables
1703      before convective_adjustment_init
1704      (corresponding adjustment of TAF tape initialisation).
1705    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1706    
1707    checkpoint45a_post
1708    o compute Rho over the whole domain (extend iMin,jMin indices)
1709    o specific exchange for X-slice domain (case Ny=1)
1710    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1711    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1712    
1713    checkpoint44h_post = checkpoint45
1714    o Fix to restore differentiability:
1715      place at which packages_init_variables is called in
1716      initialise_varia is crucial for reverse control flow.
1717    o modifications in GMRedi to enable stable adjoint
1718      (corresponding modif's in thermodynamics, dynamics)
1719    o added missing hook for sponge layer code in external_forcing
1720    o modified test cost functions
1721    o storing in gad_advection (plus removal of write(0,*)!
1722    o missing headers TR1.h added in convective_adjustment routines
1723    o errorMessageUnit set non-equal zero in eeboot
1724      (conflict on some platforms, e.g. IBM SP3)
1725    o modified carbon verif.
1726    
1727    checkpoint44h_pre
1728    o vertical grid option: allow to put the Interface at the middle between
1729      2 cell-centers ; replace delZ in pkg/kpp by drF.
1730    o GM Advective form: Tracers are advected using the residual transport (=
1731      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1732    
1733    checkpoint44g_post
1734    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1735      results) ; ifdef missing in thermodynamics.F
1736    
1737    checkpoint44f_pre,checkpoint44f_post
1738    o added PTRACERS package
1739      This allows an arbitrary number of passive tracers to be integrated
1740      forward simultaneously with the dynamicaly model.
1741      + Implemented so far:
1742        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1743        - I/O and checkpointing
1744        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1745      + Not implemented so far:
1746        - KPP
1747        - OBCS
1748      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1749        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1750        line in data.pkg.
1751      + This package is disabled by default since it increases storage.
1752    
1753    
1754    o testscript: added -cleanup option
1755    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1756                 b) enable to filter 2D fields.
1757    
1758    checkpoint44e_pre,post
1759    o re-wrote convective adjustment to use pre-calculated weights
1760      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1761      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1762      Original calls to convect() still in place.
1763    
1764    chkpt44d_pre,post
1765    o added missing EXCLUDE_MONITOR flags
1766    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1767      (incompatible typ in MIN/MAX expressions caused problems
1768      on IBM SP3)
1769    o in genmake added variable MAKEDEPEND
1770      plus resetting for case SunOS
1771    o added timer_stats.c routine for IBM SP3
1772    o removed variables in dynamics
1773    !!! I forgot to create tag chkpt44d_pre !!!
1774    !!! But chkpt44d_pre = chkpt44c_post    !!!
1775    
1776    o real fresh water flux implemented with non-linear free-surface.
1777    
1778    chkpt44c_pre,post
1779    o few fix (mask in shap_s2, EmPmR in external_field_load,
1780      USE_NATURAL_BCS in solve_for_P);
1781    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1782    
1783    checkpoint44b_pre/_post
1784    o merge of relevant stuff from the ecco-branch:
1785      - genmake: removed $S64 overwrite for case SunOS
1786      - pkg/exf: update and corrections for field swapping and obcs
1787      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1788                  harmonized between ECCO and MITgcm
1789      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1790                      updated checkpointing_lev... lists for obcs
1791      - model/src: minor changes in forward_step, plot_field
1792                   added directive for divided adjoint in the_main_loop
1793      - pkg/mdsio: added mdsio_gl_slice
1794    
1795    o check parameters & config (chkpt44a_pre,post)
1796    o OBC and NonLin_FrSurf.
1797    
1798    checkpoint44
1799    o fix bug in mom_vi_del2uv
1800    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1801    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1802    o update AIM experiments (NCEP input files)
1803    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1804    o added some stuff for AD
1805    
1806    checkpoint43
1807    o added two new advection tests
1808    o added global 4x4 degree ocean test
1809    o added test of H&S94 with free surface on cube
1810    o some final mods for gradient check, adjoint,...
1811    
1812    checkpoint42
1813      Fixed AD-related problems:
1814    o Store directives up-to-date with re-arranged Adams-Bashforth
1815      (mainly thermodynamics.F)
1816    o New store directives for multi-dim. advection schemes
1817      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1818      * new common block and key passkey
1819      (mainly gad_advection.F)
1820    o Modified store directives for split of dynamics/thermodynamics
1821      for the case ALLOW_KPP
1822    o Cleaned argument list for timestep_tracer.F
1823    
1824    checkpoint41
1825    o re-formatted/added comments in prologues of key subroutines
1826      to work with protex
1827    
1828    checkpoint40
1829    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1830    o added FLT (floats) package from Arne along with demo. experiment
1831    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1832      implementation of forward-in-time forcing terms
1833    o more mods for non-linear free-surface including new variable
1834    o modified multi-dim method to work on cube
1835    o bug fix in KPP (from DM)
1836    
1837    checkpoint40pre9
1838    o added DST advection schemes
1839    o fix MPI bug on SGI's
1840    o modifications for non-linear free-surface
1841    o fixed conditionals for fixed flow/passive tracer only mode
1842    o added tension/strain form of stress tensor
1843    o changes to commenting of arguments for TAF/TAMC
1844    o added/updated many matlab scripts
1845    o added multi-dimensional advection method for tracers
1846      
1847    checkpoint40pre8
1848    o new package rw/
1849      Added method for dumping intermediate local arrays:
1850      mdsio_writetile - same as mdsio_writefield except works from inside
1851                        bi,bj loop
1852      mdsio_writelocal - same as mdsio_writetile except works for local
1853                         arrays
1854      write_local_r? - higher-level wrapper for mdsio_writelocal
1855      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1856      Example given at end of mom_vecinv.F that dumps some local arrays.
1857    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1858      control flux-form versus vector invariant code.
1859      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1860      or genmake -DISABLE ...
1861    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1862      (additional storing is now needed for case vecinv;
1863      currently nothing implemented to switch this storing off
1864      in case fluxform is used since no CPP flag available).
1865    
1866    checkpoint40pre7
1867    o bug fix in dynamics.F
1868      calc_viscosity called before k=1,Nr loop.
1869    o added some #ifdef's ALLOW_PASSIVE_TRACER
1870    o cleaned initialisations in ctrl_map_ini
1871      related to TAF
1872    
1873    checkpoint40pre6
1874    o split dynamics into thermodynamics & dynamics
1875    o corresponding split of calc_diffusivity into
1876      calc_diffusivity, calc_viscosity
1877      (kpp_calc_diff, kpp_calc_visc).
1878    o Added diffkr, kapgm to control variables
1879    o bug fix in gmredi_slope_limit for ldd97
1880    
1881    checkpoint40pre5
1882    o proper initialization of Adams-Bashforth time stepping
1883      + uses forward step for very first step of model (iter=0)
1884    o re-generated *all* output since almost all output is modified by this
1885      change (sorry but we've been putting this one off for about 2 years)
1886      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1887        *not* regenerated since they are already out of date and I don't
1888        want to create the impression that they are suddenly working.
1889    o removed KAP stuff for DEC's
1890    o modified/added many .cvsignore files in */code and */input
1891    o added new expt "solid-body.cs-32x32x1"
1892      + this uses an alternative form of ini_curvilinear_grid.F which
1893        is not necessarily any better than the current one...
1894    
1895    checkpoint40pre4
1896    o added re-initialisations of utrans,vtrans,rtrans in
1897      calc_common_factors which are crucial for TAF.
1898    o extended iMin,jMin range for calc_common_factors,
1899      calc_diffusivity
1900    o added option ALLOW_PASSIVE_TRACER
1901    o a few minor updates and fixes
1902    
1903    checkpoint40pre3
1904    o created calc_gtr1.F for gad package
1905    o split the_main_loop and re-introduced forward_step
1906    o some recomputations of nIter0 for TAMC
1907    
1908    checkpoint40pre2
1909    o Updated to latest branch of AJA, JMC
1910    o Added gradient check package
1911    o Added routines for passive tracer handling
1912    o Added carbon sequestration sensitivity experiment
1913    
1914    checkpoint39
1915     o Modifications and fixes to support TAMC
1916       (mainly missing or wrong directives)
1917     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1918       in addummy_in_stepping
1919     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1920     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1921     o Included following packages:
1922       cal: calendar
1923       exf: external forcing
1924       ecco: essential routines to control use of cal, exf
1925             (NB: this is not the full ECCO environment)
1926     o disabled some packages by default in genmake
1927    
1928  checkpoint38  checkpoint38
1929   o see notes_c37_adj.txt   o see notes_c37_adj.txt
1930   o corrected wrong layer index in external_forcing_t   o corrected wrong layer index in external_forcing_t

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