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revision 1.107 by cheisey, Mon Dec 2 13:28:30 2002 UTC revision 1.408 by jmc, Thu Dec 9 17:41:09 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint57
7    o add horizontal bi-harmonic viscosity for vertical velocity
8      - new parameter viscA4W (defaults to viscA4)
9      - affects only non-hydrostatic code
10      - to be done: no-slip lateral boundary conditions
11    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
12    o implement Implicit Vertical advection for pTracers
13    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
14      (implemented also for implicit vertical diffusion & advection)
15    o OBCS: extend application of tracer open boundary conditions
16      to a strip beyond the boundary of width Olx/Oly
17    o add call monitor to TAF set of required calls (flow directives)
18      and include in natl_box_adjoint
19    o untangle a few ifdefs related to cost, ctrl, autodiff
20      untangel a few ALLOW_ECCO_OPTIMIZATION
21    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
22      (theta2, salt2 in ecco_cost_weights)
23    
24    checkpoint56c_post
25    o OBCS as control variables
26      - update ctrl_ad_diff.list, obcs_ad_diff.list
27      - remove balance of obcs controls from default
28      - fix index bug nobcs in ctrl_init
29      - fix dummy fields filen in ctrl_pack
30      - add dummy weights for obcs
31    o lsopt: comment out fort.94 output
32    o optim:
33      - remove unnecessary header files
34      - adjusted namelists
35      - add xerbla.F to Makefile
36    o exf:
37      - multiple modifications of exf_check_range
38      - unit change in exf_init_runoff from [m/year] to [m/s]
39    o mdsio:
40      - i/o-vector change debugLevel from debLevA to debLevB
41    
42    checkpoint56b_post
43    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
44      is called from DO_THE_MODEL_IO
45      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
46      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
47      - clean up PTRACERS_WRITE_TIMEAVE a little
48    o add another verification experiment that tests both the cfc-pkg and
49      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
50      reactive tendencies treated inline with regular timestepping
51    o testreport previously did a lousy job of comparing small numbers, so
52      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
53      implemented in the little c-progam tmp_cmpnum.c which is embedded in
54      testreport.
55    o ptracers_monitor: bug fix for MPI
56    
57    checkpoint56a_post
58    o GCHEM: finish reorganizating the package
59      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
60        (introduces another 3D-array for each passive tracer, but only if
61        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
62        gchemTendency is not needed because the timestep is done separately)
63      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
64      - GCHEM is now---more or less cleanly---separate from PTRACERS
65      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
66        so clear to me how that should be done in a general way.
67    o CFC: improve formatting of output in CFC_ATMOS
68    o PTRACERS:
69      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
70        that ALL experiments with ptracers enable can be checked. This makes
71        GCHEM_MONITOR obsolete.
72      - include a runtime parameter PTRACERS_monitorFreq that defaults to
73        monitorFreq
74      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
75    o add PTRACERS (PTR0[1-5]) to testreport output
76    o exf_check_range:
77      * default changed to .TRUE.
78      * will check values for niter0 if debLevA, every timestep if debLevB
79      * STOP in exf_check_range if 'out of range'
80      * range chosen generous to allow for potential extema
81      TBD: a version with stricter range
82           permitted range would be runtime parameters
83    o GMredi:
84      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
85      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
86      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
87    o GCHEM:
88      - move call to GCHEM_FORCING_SEP, so that it is now called before
89        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
90      - introduced a useGCHEM runtime flag and applied it everywhere.
91      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
92        this flag is now only visible within GCHEM-pkg routines.
93      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
94        be replaced by a 3D array that is computed before thermodynamics; for
95        this, the tracer ID iTracer had to be included into the parameter list
96        of ptracers_forcing
97      - set up forward_step to call gchem_forcing, that will replace
98        gchem_forcing_int in ptracers_forcing
99      - cleaning up
100    o small cleaning of exch2: remove files that are also in eesupp/src
101    
102    checkpoint56
103    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
104    o mnc: cleanup "full" files--fixes out-of-memory problem
105    o ECCO-GODAE
106      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
107      * fully merged and updated from SIO code
108        windstress sign change affects
109        - exf_inscal_[u/v]stress
110        - sign of xx_tau[u/v] adjustments
111        - signs in cost_scat
112      * ctrl_get_gen: avoid update of tau[u/v] for first few days
113      * natl_box_adjoint updated and compressed
114      * 2-level checkpoint switch added
115        (tested in EXP. 1 of natl_box_adjoint)
116      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
117    o SVD
118      * first complete, non-hacked version for SVD calculations
119      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
120        performed via direct access files admtlm_vector.it????
121        (via ctrl_[un]pack)
122      * optimcycle is used for ARPACK iteration counter
123        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
124      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
125        and add linear transforms where necessary
126      * controls are initial/final SST, SSS (can be extended; need to check
127        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
128    o mdsio: filename info to both stderr, stdout
129    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
130      from sign change
131    
132    checkpoint55j_post
133    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
134      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
135    o add consistent build directories and .cvsignore files to verification
136    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
137    o make all subroutines 30 or less characters in length for certain older
138      compilers to work (a thorough search only turns up two routines in
139      pkg/ptracers)
140    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
141      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
142    
143    checkpoint55i_post
144    o change arrays for total vertical diffusivity (2.D if explicit,
145      3.D if implicit) ; each ptracer uses its own background value.
146    o added mnc/NetCDF output capability to ocn_compon_interf
147      - added bits to verification/cpl_aim+ocn so that it can run on
148        ITRDA and other clusters without the mpirun "-wd" option
149    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
150      configuration
151    o give MNC the ability to create additional files rather than
152      exceeding a specified file size limit "MNC_MAX_FILESIZE"
153      - the default is just less than 2GB which is a practical limit
154        on many systems
155    o Compute the non-local term using either KPP vertical diffusivity (=default)
156       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
157    
158    checkpoint55h_post
159    o add verification test "vermix"
160    o remove all the *_ioinc flags and replace with the single global
161      outputTypesInclusive flag
162    o allow to set a vertical profile of vertical diffusivity for T & S
163    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
164    o useMNC moved from data.mnc to data.pkg
165    
166    checkpoint55g_post
167    o Renaming carbon AD experiments to comply with testreport conventions
168    o Updating adjoint of Held-Suarez hs94.1x64x5
169    o Fixing directives for non-ECCO forward_step, after ECCO directives
170      have been fixed to avoid recomp. of do_oceanic_phys
171      Works well for global_ocean.90x40x15,
172      but recomp. issue remains for carbon
173    o Updating adjoint output for natl_box_adjoint after
174      pkg/ecco has been modified (see taga c55d_post)
175    
176    checkpoint55f_post
177    o rename to timeave_init_fixed
178    
179    checkpoint55e_post
180    o some delicate re-shuffle of store directives to avoid one
181      extra call of do_oceanic_physics
182      affects ecco_the_main_loop.F, do_oceanic_physics.F
183      checkpoint_lev1_directives.h
184    o NB: this may break global_ocean adjoint temporarily,
185      but it is clear how to fix it. Will do later, need this now.
186    
187    checkpoint55d_post
188    o ECCO specific cost function terms (up-to-date with 1x1 runs)
189    o ecco_cost_weights is modified to 1x1 runs
190    o modifs to allow observations to be read in as
191      single file or yearly files
192    o enable to read exf forcing fields as either
193      single file or yearly files (flag useExfYearlyFields)
194    checkpoint55d_pre
195    
196    o switch between 2-level and 3-level checkpointing
197    o add ability of MNC to write local and "partial" (eg. 2D slices where
198      the full 3D field is never actually stored) arrays to NetCDF files
199      with the correct (that is, the complete multi-dimensional) set of
200      array indicies
201      - used in mom_vecinv() to write the diagFreq output
202      - tested (demonstrated) in verification/aim.5l_cs
203    o further mnc-ification
204      - add verification/lab_sea to the list with mnc setups
205      - fix undefined mnc v-names in cd_code
206      - add kpp to mnc output (both snapshot and timeave)
207    o non-hydrostatic code
208      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
209        in calc_gw.F
210      - defaults to viscAh
211      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
212        friction or Leith) in non-hydrostatic mode, as long as there is
213        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
214    o pkg/cost
215      extend simple cost functions to treat time mean quantities
216      (T,U,V) via cost_accumulate_state from cost_tile
217    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
218        be 2 times larger than the minimum size the advection scheme requires.
219        now get a perfect conservation of salt in advect_cs test-exp (updated)
220    o GGL90 (Gaspar's TKE mixed layer)
221      - add horizontal diffusion of TKE, requires exchanges in
222        do_fields_blocking_exchanges, horizontal diffusivity is zero by
223        default. In OPA there is no horizontal diffusion of TKE but the
224        mixing coefficients are computed from a horizontal average of TKE of
225        6 points or so. I think that diffusion has a little more physical
226        justification.
227      - clean up ggl90_calc in the hope of reducing memory usage (this hope
228        was in vain)
229      - mask tke-variable in ggl90_init
230    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
231    o fix biharmonic diffusion on CS-grid.
232    o more obcs stuff
233      - added obcs_external_fields_load as an alternative to the EXF-pkg option
234        for reading boundary values. This routine is called from
235        obcs_prescribe_read
236      - updated obcs_check
237      - changed sponge layer relaxation parameter units for days to seconds
238      - turned off sponge layer by default
239      - changed argument list of OBCS_CALC to myTime+deltaTclock
240      - fixed about 35 bugs in obcs_external_fields_load
241    
242    checkpoint55c_post
243    o obcs stuff
244      - new runtime flags useOBCSprescribe, useOBCSbalance
245      - re-arranged obcs_calc
246      - moved exf_getobcs to obcs_prescibe_read
247        obcs_prescibe_read is called after ORLANSKI stuff
248        and independent of it (executable can contain all).
249      - updated obcs_check
250      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
251        These may be necessary only if tangential velocities are
252        prescribed at OB, not sure, needs testing.
253    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
254      which simplifies the calls and passes the ifc check-bounds test
255    
256    checkpoint55b_post
257    o add a 2D scalar, Z location, exchange_2 routine.
258    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
259      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
260      affects advect_cs results (for the wrong reason): update output.txt
261    o use a more standard discretization for biharmonic viscosity ;
262     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
263      affects results of dome set-up: update output.txt
264    o fix gad_advection.F (CubedSphere part), back to version 1.23
265    o fix bug in mom_vi_del2uv.F (CubedSphere part).
266    
267    checkpoint55a_post
268    o merged code to
269      * prescribe/read time-dependent open boundaries
270        (works in conjunction with exf, cal)
271      * sponge layer code for open boundaries
272      * each boundary N/S/E/W now has its own CPP option
273        (healthy for the adjoint)
274    
275    checkpoint55
276    o up-to-date adjoint of previous breaks
277      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
278      - global_ocean_ebm: adjoint still needs fix (TLM ok)
279      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
280      - carbon: * remove tr1-related adjoint verification
281                * add ptracer as control variable
282    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
283      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
284    
285    checkpoint54f_post
286    o in verification/carbin/ remove experiment related to
287      ALLOW_PASSIVE_TRACER (array tr1 etc)
288      code_ad/ input_ad/ results_ad
289    
290    o add two new packages
291      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
292        + subject to optimization (memory)
293      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
294        + subject to reordering (many GOTOs in the original code)
295        + so far opps is called for every (i,j) point, and then operates in
296          the vertical; one may want to reorder the scheme in order operate in
297          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
298          fields)
299    o overhaul of IO so that we now have flags for MDSIO and/or MNC
300      - all verification tests compile and run with linux_ia32_g77
301      - defaults are compatible with current input files--nothing
302        should change if you were not previously using MNC
303      - MNC output has been added in numerous places (eg. timeave)
304        but there are still a few writes not yet do-able with MNC
305        (this is in progress)
306      - flags now allow for either/or/both use of MDSIO and MNC and
307        documentation will soon follow
308      - numerous small formatting cleanups for ProTeX
309    o add version info (via BUILD_INFO.h) to MNC and stdout
310    
311    checkpoint54e_post
312    o add two new packages
313      - pp81 (Packanowski and Philander, 1981), Richardson number and
314        stratification dependent mixing
315      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
316      - these scheme operate in a similar manner as KPP (without ghat, of
317        course), however there is only one diffusivity that is used for both
318        temperature and salinity (and passive tracers)ç
319    o add offline package
320    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
321      provided by Stephanie Dutkiewicz
322    o genmake2: add ability to search for C compilers and cleanup test output
323      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
324    
325    checkpoint54d_post
326    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
327    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
328      leading to additional shift by 5 days each year of integration
329       (i.e. leading to considerable offset over the years)
330    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
331    o start with no AB and no initial filtering (staggerTimeStep):
332      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
333    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
334      (external loading & cpl import/export stay in forward_step.F)
335    o update coupling interface to work with new staggerTimeStep
336    o change MDSIO ptracers_pickup.
337    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
338    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
339    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
340    
341    checkpoint54c_post
342    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
343      this affects (truncation error) output.txt of test-exp:
344       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
345    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
346    o change Qnet to always be the net heat flux, (+upward).
347      affects (truncation error) output of natl_box exp.: updated
348    o define the max number of passive tracers in PTRACERS_SIZE.h
349    o start to test mnc routinely in exp0
350    o add sea-ice loading (sIceLoad) as a new forcing field.
351    
352    checkpoint54b_post
353    o add testreport "-j JOBS" option for parallel builds (tested and pretty
354       impressive on Altix and Opteron systems)
355    o diagnostics can now write NetCDF files through the mnc package
356    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
357    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
358    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
359      affects (truncation error) output of lab_sea & natl_box exp.: updated
360    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
361    
362    checkpoint54a_post
363    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
364    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
365    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
366    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
367      + internal_wave (shift in writing cg2d_ini_res)
368    checkpoint54a_pre
369    
370    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
371      - modified verification/lab_sea and natl_box_adjoint accordingly
372    
373    checkpoint54
374    checkpoint53g_post
375    o prepare splitting of thermodynamics: store convect.counter in common block
376    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
377      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
378    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
379    o new parameter "nShapS": allow to treat differently S from T (nShapT)
380    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
381    o restore adjointability
382    
383    checkpoint53f_post
384    o modifications that affect AIM experiment results (update output.txt):
385      - no advection of S at top interface Nr (pkg/generic_advdiff)
386      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
387    o AIM pkg:
388      - include stability function into surf.Flux derivative relative to Tsurf
389      - calculate clear-sky radiation & surface temp. change (for diagnostics)
390    
391    checkpoint53e_post
392    o merged cylindrical coord configuration
393    o added rotating_tank experiment
394    checkpoint53e_pre
395    
396    checkpoint53d_post
397    o faulks upgraded: re-generate output.txt that have changed:
398       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
399    o Added Bryan and Lewis, 1979, vertical diffusivity profile
400    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
401    o added Sadourny discretization of Coriolis
402      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
403      - re-enabled use of omega3 (useAbsVorticity)
404    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
405      vector-invariant equations
406      - note: does *NOT* yet use same variable visc. for no-slip BC's.
407    o recoded the lateral boundary conditions for non-hydrostatic w, this time
408      hopefully without new bugs
409      - still to do: biharmonic friction for non-hydrostatic w
410    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
411    o regenerated output for global_ocean_ebm (using -ieee)
412    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
413      of mom_common/
414      - simple re-arrangement of instructions within computing loop
415    checkpoint53d_pre
416    
417    checkpoint53c_post
418    o new version of coupler for AIM+thSIce and Ocean models
419     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
420     - land: change Evaporation of snow
421     - aim with thSIce: fix bug in snow-precip.
422    o changes to calc_gw.F
423     - bug fix for w^2 term near the bottom boundary
424     - (hopefully) improve the lateral slip boundary condtions for use with
425        partial/looped cells
426      - because the bug fix changes two verification experiments anyway (exp5
427        and plume on slope), change the lateral boundary condition from half slip
428        to the value of no_slip_sides
429    o ebm package wasnt quite up to the parallel task. Fixed that.
430    o Adjoint of EBM package + verification
431      * TLM OK
432      * ADM not sufficient accuracy yet (needs further testing)
433    
434    checkpoint53b_post
435    o Commiting new energy balance model to repository
436      * package is pkg/ebm
437      * verif. is verification/global_ocean_ebm
438      * references are in ebm_driver.F
439    C      * X. Wang, P. Stone and J. Marotzke, 1999:
440    C        Global thermohaline circulation. Part I:
441    C        Sensitivity to atmospheric moisture transport.
442    C        J. Climate 12(1), 71-82
443    C      * X. Wang, P. Stone and J. Marotzke, 1999:
444    C        Global thermohaline circulation. Part II:
445    C        Sensitivity with interactive transport.
446    C        J. Climate 12(1), 83-91
447    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
448    C        Destabilization of the thermohaline circulation
449    C        by atmospheric eddy transports.
450    C        J. Climate 7(12), 1870-1882
451    o Will need long integration testing.
452    checkpoint53b_pre
453    
454    o created pkg/mom_common in preparation for variable viscosity code
455    o renamed and split ini_mnc_io
456    o pkg/land: only liquid water can diffuse or run-off
457    o AIM using land: soil wetness availability account for snow
458    o added printMapIncludesZeros to EEPARMS namelist
459    
460    checkpoint53a_post
461    o restore TAMC compatiility for exf_constants.h
462      (no usage of _d in .h)
463    o Additional storing in KPP in an attempt to fix
464      TAMC problem with adjoint of KPP code.
465      (no success...)
466      Identical code works fine with TAF.
467    o Fixed verification/natl_box_adjoint experiments.
468      Initial conditions for Experiments 4 and 5 are now
469      set to "SEAICE_initialHEFF=0", which is more reasonable,
470      and hence gives results closer to that of Experiment 2.
471      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
472    
473    checkpoint53
474    o stable checkpoint with up to date adjoint
475      TLM tests only run for 1st grdchk at the moment. Its unclear if
476      this is a code problem or a problem with resetting code for g_
477      variables that is being autogenerated wrong.
478      Otherwise:
479       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
480       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
481         are both still in chaos following their security messes.
482    
483    checkpoint52n_post
484    o various build (mostly genmake2) changes including:
485      - ability to build/run more easily within Cygwin and MacOS X
486      - more complicated Makefiles with a stronger dependence on Gnu Make
487    o pkg/seaice modifications
488      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
489        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
490        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
491      - changed proxy for geostrophic velocity and updated
492        verification/lab_sea/results/* accordingly
493      - removed ADI dynamic solver from pkg/seaice
494      - replaced all occurrences of 1/CSTICE or 1/CSUICE
495        they caused a segmentation fault under certain circumstances
496      - removed unused field WATR
497    o bug fix in exf-package:
498      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
499         now reflect that.
500    o small fixes in the cal-package:
501      - set reference date to first of January for the 'model'-calendar
502      - failing of cal_CheckDate in cal_FullDate now actually results in a
503        warning
504    o small modifications in exf-package to increase flexibility:
505      - change climtempfreeze from a constant to a runtime parameter that
506        is specified in data.exf_clim (default = -1.9)
507      - introduce runtime parameter windstressmax (default = 2.0) that is
508        specified in data.exf
509    o fix in pkg/thsice:
510      - update Evap (Tsf changes) to be consistent with Latent heat flux
511      - maintain snow precipitation unchanged (even if Tsf >=0).
512     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
513    
514    checkpoint52m_post
515    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
516      this does not change any of the results, because myIter=0 in swfrac always
517      lead to jwtype=2 (the default anyway), but the call makes little sense
518      as a default
519    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
520    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
521      atmospheric model (AIM) to use it ; add a "slab ocean" component.
522    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
523    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
524    o extending useSingleCpuIO option to work with new exch2 I/O format
525      - old-style, missing-tile I/O is still accessible by defining CPP
526        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
527    o monitor package can write to NetCDF files and/or STDOUT
528    o fix re-definition bug in MNC_GRID_INIT_ALL()
529    o doc/api_reference added
530      - a framework for building an API Reference Manual using all
531        the "protex" comments embedded in the code
532      - see pkg/generic_advdiff, pkg/mnc for examples
533    o MNC:
534      - make myThid the last argument for all subroutines
535      - new default for the grid files: NO halos
536      - add useMNC and other run-time flags
537      - separate per-file-group handling of the unlimited dimension
538      - early initialization of MNC w/ flags read at the eeboot stage
539        and lookup tables set in initialize_fixed
540      - write all MNC output to a freshly-created directory
541    o thermodynamics sea-ice (thsice) is now tested with testreport.
542    o test exp. advect_cs: use the standard cs32 grid ; update output.
543    o Added functionality to grdchk:
544      pick global i,j,k position (or nearest wet) where to perform check.
545    
546    checkpoint52l_post
547    o new land formulation:
548      a) use ground enthalpy as prognostic variable to ensure exact
549         energy conservation.
550      b) account for water temperature and for latent heat of freezing
551         in all processes (rain, run-off, ground storage)
552      c) compute surface and ground temperature implicitly.
553    o aim_v23 modification for new land model:
554      a) Treat separately land / ocean / sea-ice surface fluxes
555         to allow implicit computation of land & sea-ice surface temp.
556      b) add snow precipitation.
557    checkpoint52l_pre
558    
559    o fix problem (when 1 tile is empty) in min/max monitor.
560    o fix bug in timeAve (u,vZetatave in common block)
561    o no restoring terms under ice for pkg/seaice
562    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
563    o bug fix for pkg/seaice pickups
564    o change MNC call locations and add coordinate attributes
565    o mask vorticity at the corner ; affects global_ocean.cs output
566    o fix ini_curvilinear_grid ; test CS experiments with mpi
567    o aim.5l_cs: modify sea-ice fraction input file ; update output
568    o exf: Adding simple range check routine for exf fields after read
569    
570    checkpoint52k_post
571    o removed top-level directory "diags"
572      - we migrated these functions to pkg/timeave a long time ago
573    o fixed bug introduced in pkg/monitor
574    o accuracy ctrlprec = 32 insuffient for gradient checks using
575      averaged fields (I/O via cost_averages)
576      -> use ctrl.h in active_file*.F to control I/O precision.
577    o paramter list of CALL ADTHE_MAIN_LOOP
578    o added initial do_the_model_io to ecco
579    o set all ...Freq to zero after cost_final
580      taveFreq, dumpFreq, pChkptFreq
581    o MAIN and ECCO differentiability restored
582    
583    checkpoint52j_post
584    o fix nchklev in tamc.h for global_ocean...
585    o Bringing flow and store directives up-to-date
586    o Really weird thing!
587      call do_the_model_io from the_main_loop with parameters
588      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
589      TAF places a faulty re-call of initialise_varia
590      after cost_final call which should not be there!
591    checkpoint52j_pre
592    
593    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
594      error messages
595    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
596    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
597      debug output
598    o modfied mdsio_writefield.F to handle non-global files under exch2
599    o update AIM Cubed-Sphere exp (aim.5l_cs):
600      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
601    o update AIM Equatorial Channel exp:
602      use standard aim_v23 pkg and change the SST fields to be more realistic.
603    o globalFile now works with exch2
604    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
605      mon_vort3.F to make exch2 friendly with >1 tile per cube face
606    o limit timeave output for hi-res integrations
607    
608    checkpoint52i_post
609    o removed CPP_EEOPTIONS.h from verification/*/code
610    o updated the tiling for global_ocean_pressure
611    checkpoint52i_pre
612    
613    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
614      the old pkg/aim).
615    
616    checkpoint52h_pre
617    o shortened offending lines in exch2_send_rx?.template
618    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
619    o genmake2: add build & execute test for NetCDF code
620    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
621      old grid files, moved CPP_EEMACROS.h to pkg/exch2
622    o added useSingleCPUIO flag to monitor.F and mon_out.F
623    o added temporary hack for sea-ice dynamics on the cube:
624      metric terms are ignored and it is assumed that
625      there is no sea-ice on cube faces 1, 2, 4, and 5.
626    
627    checkpoint52f_post
628    o added exch2 cube routines to pkg/exch2
629    o modified hs94.cs-32x32x5 to use it
630    o added new grid files to hs94.cs-32x32x5
631    checkpoint52f_pre
632    
633    checkpoint52e_post
634    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
635      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
636    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
637      to work with implicit vertical advection and AB ;
638    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
639    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
640     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
641    checkpoint52e_pre
642    
643    o fix bug in impldiff when Nr=1 or Nr=2.
644    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
645    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
646    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
647      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
648    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
649    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
650    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
651    
652    checkpoint52d_post
653    o re-tiled many expts to allow comparison in multi-processor mode
654      - updated output accordingly
655      - changed hs94.128x64x5 to use intial T from file rather than use the
656        random number generator
657    o add infrastructure in model routines for fizhi and gridalt packages
658    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
659    o changes to permit hi-res, cubed-sphere, configuration
660      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
661      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
662      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
663        of surface winds for the cube
664      (A verification experiment, based on global_ocean.cs32x15, but with
665       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
666       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
667       complete with example surface forcing files and matlab scripts to look
668       at the output and compare it with that of global_ocean.cs32x15.)
669    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
670       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
671       to conform to the common rule.
672    o check-in the first version of the coupler + interfaces for multi-components
673       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
674       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
675       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
676       - ocean and atmos. share the same horizontal grid (no interpolation).
677       - exchanges between component and coupler is done in forward_step
678    o new verification experiment, cpl_aim+ocn:
679       coupled ocean - AIM atmosphere on cs32 grid.
680    
681    checkpoint52d_pre
682    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
683    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
684    
685    checkpoint52c_post
686    o Fixing OPTIONS files for use of exf:
687      - ALLOW_ECCO not needed
688      - ECCO_CPPOPTIONS.h should not be included from
689        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
690        as has been the case in the past
691      - All cal/exf related options are currently set in
692        single header file. Should remain so until we
693        agree on a consistent new policy.
694    o Removed all CPP options for cal package.
695      cal has no more CPP options.
696    o modified STOREs in GAD_ADVECTION
697    o corrected key comp. for passkey
698    
699    checkpoint52b_post
700    o new version: "thsice" of thermodynamic sea-ice pkg:
701     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
702     - modify fluxes but do not change theta directly;
703     - light cleaning of bulk_force pkg (still needed with thsice).
704     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
705       + output_thsice.txt to test thsice & bulk_force pkgs.
706    o put back grid & coriolis monitor output.
707    checkpoint52b_pre
708    
709    o call "do_the_model_io" at the beginning (=> dump initial state)
710    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
711    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
712      (need info on NUMBER_OF_PTRACERS)
713    o missing PTRACERS headers in some routines
714    o default tamc.h in pkg/autodiff supposed to crash
715      to ensure proper customization
716    
717    checkpoint52a_post
718    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
719      - moved surfaceTendencyTice from pkg/seaice to main code
720      - subroutine FREEZE_SURFACE now limits only surface temperature
721        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
722        => new output.txt for global_ocean.cs32x15 & global_with_exf
723      - keep the old version of FREEZE for backward compatibility;
724        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
725      - corresponding modifs for TAF directives
726    o added surface flux output variables to TIMEAVE_STATVARS
727    o time-averaged output for pkg/ptracers
728    o fix problem with ECCO-related divided adjoint
729      snapshot file was missing some ad-variables,
730      but no warning issued by TAF
731    
732    checkpoint52a_pre
733    o some bug fixes for #undef REAL4_IS_SLOW
734    
735    checkpoint52 = ecco_c52_e35
736    o after testing adjoints of checkpoint51u_post
737    
738    checkpoint51u_post
739    o this is the post-merge tag of the ecco-branch
740      (needs another clean checkout and re-testing)
741    o various natl_box_adjoint configs and results
742      but no input fields
743    o obcs adjoint not yet merged!
744    o adding ECCO global 1x1 and 2x2 degree configs
745    o updated/extended some store directives for seaice
746    o pkg/ecco now containes ecco-specific part of cost function
747    o top level routines the_main_loop, forward_step
748      supersede those in model/src/
749      previous input data.cost now in data.ecco
750      (new namelist ecco_cost_nml)
751    o in ctrl/ cleaned some cross-dependencies and updated CPP options
752    
753    checkpoint51t_post
754    o this is the pre-merge tag of the ecco-branch
755    
756    checkpoint51s_post
757    o cleanup: removed various obsolete #define-s
758    o pkg/grdchk
759      - renamed 'ph-grd 3' to 'grad-res'
760      - merged from ecco-branch
761        (remaining bug fixes for obcs gradient checks)
762      - additional high-precision output for testreport
763        (grep for 'precision_grdchk_result')
764    
765    checkpoint51r_post
766    o cleaned up or removed CPP_OPTIONS.h files
767    o updated results for some of the tests to reflect the new
768      optfiles (-ieee: -O0 instead of -O3)
769    
770    checkpoint51q_post
771    o cd_code:
772      - moved cd_scheme.F -> cd_code_scheme.F
773      - separate read_checkpoint from cd_code_ini_vars.F
774      - separated cd_code part from write_checkpoint
775      - updated AD_SOURCE, generated .flow
776      - added CD_CODE_VARS.h to the_main_loop
777      - Moving cd_code specific store dir.s to pkg/cd_code
778    o ctrl package totally restructured
779      - pack/unpack now optional and decoupled from
780        xx_/adxx_ I/O
781      - ctrl_pack/unpack cleaned
782        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
783      - confined inclusion of AD_CONFIG.h to where necessary.
784    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
785    
786    checkpoint51p_post
787    o create initial cd_code package
788      - WARNING: the initialization of fields within packages
789        is broken because INI_FIELDS (where READ_CHECKPOINT is
790        called) is called *before* PACKAGES_INIT_VARIABLES.
791        This seems to be backwards since
792        1) its important to initially zero the entire field including
793           the "halo" region
794        2) zeroing needs to be done *before* reading pickup info
795           and the pickup call might or might not happen in any
796           particular run
797      - this needs an overhaul for R2
798    o cleanup verification/*/code/GMREDI_OPTIONS.h
799    o cleanup testreport
800    
801    checkpoint51o_post
802    o bringing AD-related verif's up to date with genmake2
803      - carbon/
804      - global_ocean.90x40x15/
805      - hs.94.1x64x5/
806      - (front_relax/ )
807    o (more) consistent directory structure for AD-related verif.'s
808    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
809    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
810    o bug fix in find_alpha.F for MDJWF:
811      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
812        change rho -> rho-rhoConst
813      - replace call find_rho to find_rhonum
814    o initialisation of rFlx extended to full array (required by TAF)
815      and shifted to thermodynamics
816    o removed PTRACERS.h in ptracers routine
817    o added surfacetendencyPtr to S/R parameter list pracers_forcing
818    o Correcting initialisations for fVerU, fVerV.
819    o helping TAF to recognize dependency on kUp for
820      fVerU, fVerV
821    o Replacing delZ by delR in pkg/ctrl/
822    checkpoint51o_pre
823    
824    o undid all of cp51 pending some cleanups and discussion
825    o added the [#include "AD_CONFIG.h"] statement to all files that need
826       it for adjoint/tl #defines
827     o re-worked the build logic in genmake2 to support AD_CONFIG.h
828     o removed tools/genmake since it no longer works
829    
830    checkpoint51n_post
831    o modifications to make FREEZE flux visible to pkg/kpp
832      - moved surfaceTendencyTice from pkg/seaice to main code
833      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
834      - subroutine FREEZE now limits only surface temperature
835        (this means new output.txt for global_ocean.90x40x15,
836         global_ocean.cs32x15, and global_with_exf)
837    o added surface flux output variables to TIMEAVE_STATVARS
838    
839    checkpoint51n_pre
840    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
841    o added [#include "AD_CONFIG.h"] to all files that use the following
842      defines:
843      - ALLOW_ADJOINT_RUN
844      - ALLOW_TANGENTLINEAR_RUN
845      - ALLOW_ECCO_OPTIMIZATION
846    
847    checkpoint51m_post
848    o incorporating changes to get TAMC/TAF working in genmake2
849      - added new TAMC/TAF targets to the Makefile
850      - various cleanups related to package handling
851      - these changes should have no impact on the forward model
852    
853    checkpoint51l_post
854    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
855     - faster algorithm for cal_addtime.F
856     - higher precision arithmetic, where needed
857     - pkg/exf *startdate variables changed from calendar date to
858       model integration time
859    
860    checkpoint51l_pre
861    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
862    o enable to apply restoring on S & T only in a latitude band.
863    o update output (external_forcing_surf modif. change truncation errors)
864       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
865    
866    checkpoint51k_post
867    o change default to: useNHMTerms=.FALSE.
868     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
869       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
870     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
871        exp1, ideal_2D_oce
872     - change data file of oceanic exp (leave the results unchanged for now)
873       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
874    o set gravitySign automatically according to the vertical coordinate used
875      (and change sign: back to "logical" value: +1 when R increases downward)
876    o added an include barrier to the default CPP_OPTIONS.h and
877      removed the #include "PACKAGES_CONFIG.h" from it
878    o fix a bug in mom_fluxform (from chk51j_post)
879    
880    checkpoint51j_post
881    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
882    o adjusted some flow directives (dynamics, thermodynamics)
883    o added cubed-sphere case to test cost function
884    o heckpoint_lev?_directives.h now include
885      pkg-specific directives, whenever those are enabled.
886    o Moving pkg-specific flow directives to corresponding pkg
887      Moving pkg-specific differentiation list to corresponding pkg
888      Moving pkg-specific checkpoint-lev storing to corresponding pkg
889      ---> conventions are
890           - pkg_ad.flow
891           - pkg_ad_diff.list
892           - pkg_ad_check_lev?_dir.h
893    
894    checkpoint51i_post
895    o merge of the branch-genmake2
896      - knowingly breaks the older genmake
897      - automatic generation of all ALLOW_${PKG_NAME} defines
898      - new testreport supersedes older testscript
899    o large number of package inclusion and header cleanups
900    checkpoint51i_pre
901    
902    o new output for adjoin of global ocean vector invariant
903    o fix for checkpoint of thermodynamic seaice and bulk_force
904    o Steph gchem various cleanups
905    
906    checkpoint 51h_pre
907    o fixed some single quotes
908    o modify gchem pkg to be more versatile
909    o modifications to clean up dic pkg
910    o add pkg/cfc
911    
912    checkpoint51g_post
913    o provide links for ARPACK and ADM*TLM
914    o start removing verification/vero/
915    o update AD-related stuff
916      (in particular some IF-statements in model/src/ routines)
917    o adding to verification/global_ocean.90x40x15/ adjoint of
918      vector invariant setup
919    
920    checkpoint51f_post
921    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
922    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
923      of tracer Green's fucntions for ocean inversion project.
924    
925    checkpoint51f_pre
926    o Added on-the-fly spatial interpolation capability
927        "USE_EXF_INTERPOLATION" to pkg/exf.
928      - This is a temporary Cartesian-grid hack until
929        the super-duper ESMF coupler becomes available.
930      - See verification/global_with_exf/README for usage example.
931      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
932        flags and modified pkg/seaice accordingly.
933    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
934        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
935        non-local transport term.
936    
937    checkpoint51e_post
938    o pkg/mom_vecinv:
939      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
940      - add time-ave diagnostic of vorticity advection.
941    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
942    o atmospheric geopotential: - include water vapor effect;
943                                - use p^kappa in p* scaling.
944    o land pkg: read initial state from files.
945    o AIM : add stratospheric drag in the upper level
946    
947    checkpoint51d_post
948    o change function ILNBLNK (=> last non-blank char.) to return zero
949      (instead of the string length) when the string. char is empty
950    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
951    o modif's to restore TAMC compatibility
952      - avoid "_d" constructs in PARAMETER declarations
953      - avoid interrupting lines by comment lines
954    o Use cluster local disks for purely local I/O
955      vs. globally visible disks needed for ctrl stuff
956      (merged from ecco-branch)
957      - new active_file_loc... and mdsio_..._loc routines
958      - affected packages: autodiff, ctrl, grdchk, mdsio
959    
960    checkpoint51c_post
961    o introducing integer flag debugLevel
962      - debLevZero: suppress all output
963      - debLevA: standard
964      - debLevB: equivalent to current debugMode=.TRUE.
965    o introducing pathname variable mdsioLocalDir for mdsio
966      that can be specified at runtime
967      (relevant for cluster I/O to local disk)
968    `
969    >>>checkpoint51b_post
970    adjoint of ptracers
971    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
972    o extended state in checkpoint_lev?, etc.
973    o alternative ctrl/cost with tr1 or ptracer
974    o new comlev1_bibj_ptracers
975    o new ptracers.flow
976    o made ptracers_forcing same as external_forcing_s
977    o added verification for adjoint with ptracers
978      - adm. grdchk fail so far
979      - tlm. grdchk OK
980      - checked tapelev/comlev recomputations: OK
981    <<<checkpoint51b_pre
982    
983    checkpoint51a_post
984    o added code for biogeochemistry package
985      - new pkgs: dic, gchem
986      - new subroutine in ptracers
987    o modify code for biogeo packages
988      - in model/src and pkg/ptracers
989    
990    checkpoint51
991    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
992      - autodiff, ctrl, exf, grdchk, seaice
993      kept separate packages
994      - cost, ecco, obcs
995    o updating verification/internal_wave, verification/lab_sea
996      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
997    
998    checkpoint50i_post
999    o Preparing next differentiable checkpoint and sync
1000      of MAIN vs. ecco-branch
1001      - 1st step: this one is differentiable
1002      - 2nd step: next(! not this) checkpoint will have updated packages
1003                  from ecco-branch)
1004    
1005    checkpoint50h_post
1006    o new package "land": provide surface BC for AIM.
1007    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1008    o AIM: use true log-P extrapolation for near surface temp (= as in
1009        F.Molteni paper) ; update aim.5l_cs output.
1010    o New variable in PARM03 for more flexible pickups
1011    o somewhat cleaned package initialisation sequence for
1012      ctrl/ cost/ ecco/ in packages_... routines
1013    
1014    checkpoint50g_post
1015    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1016      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1017      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1018        made the default because of faster convergence than ADI
1019    
1020    checkpoint50f_post
1021    o exf totally restructured
1022      - replaced all exf_set_ routines by one generic exf_set_gen.F
1023        and made sure it's still differentiable
1024      - split exf_getffields.F into new exf_bulkformulae.F
1025      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1026      - updated adjoint/makefile and relevant verif. accordingly
1027    
1028    checkpoint50f_pre
1029     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1030          + change Evap over land. (update aim.5l_cs output)
1031     o added missing .cvsignores and made uniform across expts
1032     o changed configuration of tidal_basin_2d expt
1033     o added pkg/debug functions for tracing code in fatal crashes
1034     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1035     o new fn in pkg/monitor to stop model if solution grows too big
1036     o removed lots of single quotes from comments
1037    
1038    checkpoint50e_post
1039    o make KPP work with PTRACERS
1040     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1041       nearly a copy of kpp_transport_s
1042     - there is no analogue to SurfaceTendencyS, so I have to use
1043       gPtr(of the surface layer) instead
1044    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1045    checkpoint50e_pre
1046    
1047    checkpoint50d_post
1048    o change kpp output from multiple-record state files to single-record state
1049      files analogous to write_state.F
1050    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1051      analogous to the cg2d-related output.
1052    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1053      so that writing to internal file fn (with length 512) fails.
1054    checkpoint50d_pre
1055    
1056    checkpoint50c_post
1057    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1058    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1059    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1060    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1061    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1062    
1063    checkpoint50c_pre
1064    Merging from release1_p13:
1065    o bug fix for pkg/seaice dynamic solver
1066    o Added SEAICE_initialHEFF to pkg/seaice
1067    
1068    checkpoint50b_post
1069    o store u*,v* in gU,V instead of in guNm1,gvNm1
1070    o in order to put the momForcing out of the Adams-Bashforth:
1071      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1072      to timestep.F
1073    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1074    o re-generate output for highly sensitive test-exp:
1075       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1076    
1077    checkpoint50b_pre
1078    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1079    o corrected CPP option mismatch in exf_Bulk... functions for case
1080      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1081    
1082    checkpoint50a_post
1083    o Bug fix for merging between c50 and KPP.
1084      ikey was passed from thermodynamics to kpp_calc via
1085      common block rather than being recomputed in kpp_calc,
1086      in contradiction with new key itdkey.
1087      New key ikppkey created, and tamc.h headers updated.
1088    
1089    checkpoint50
1090    - 2nd step of merge with ecco-branch:
1091      merge changes in ecco-branch back into main trunk
1092    - bug fix in find_alpha
1093    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1094    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1095    - merged some sliced AD support routines
1096    
1097    checkpoint49
1098    merged from ecco-branch:
1099    o exf:
1100      - Enable initialisation of forcing fields to constant
1101        (runtime) values.
1102      - in exf_getffields.F
1103        Reduce i-/j-loop to interior domain, discarding overlaps.
1104        That also fixes wrong TAF-key computations for key_1, key_2
1105        with bulf formulae.
1106      - exf_init.F modify #ifdef for exf_init_evap
1107      - exf_getffieldrec.F, ctrl_getrec.F
1108        The following INT-usages are not safe:
1109          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1110          fldcount = int(fldsecs/fldperiod) + 1
1111        and were modified.
1112    o autodiff: checkpoint_lev...
1113      - updated storing for bulk formulae (some arrays were missing)
1114      - added state for seaice package
1115      - synchronized with main branch
1116    o DIVA:
1117      Modif.s in
1118      - the_main_loop.F
1119      - the_model_main.F
1120      and added cost_final_restore.F cost_final_store.F
1121      o With these changes, it is possible to fully separate
1122        the first forward run to compute the cost function (mdthe_main_loop)
1123        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1124        into separate model executions.
1125        This enables better tuning of DIVA to given queue sizes.
1126      o Loss of cost function value in consecutive DIVA runs is
1127        fixed by storing to 'costfinal' file.
1128      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1129        beginning/end of adjoint integration is accounted for.
1130      The current changes apply to TAF-1.4.26.
1131      TAF has one remaining bug, requiring one manual change
1132      (see MITgcm manual).
1133    o cal: synchronized between MAIN and ecco-branch
1134    
1135    checkpoint48i_post
1136    o Changes to restore differentiability of code w.r.t. previous tag
1137      (mostly adding new routines to make list and replacing
1138      pressure by totPhiHyd).
1139    o Updated and merged grdchk package
1140      - has both ADM and TLM checks
1141      - works for single- and multi-proc.
1142      - output cleaned
1143      - worked successfully for parallel DIVA
1144    o genmake:
1145      - Adding -platform=SP4
1146      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1147    o Modif. for DIVA:
1148      ctrl_unpack should not be called in intermediate DIVA interval.
1149      (similar thing would apply for active files such as
1150      tbar, sbar, psbar, which should not be reinitialised;
1151      only relevant for ecco-branch)
1152    
1153    checkpoint48h_post
1154    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1155    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1156    o Added SEAICE_initialHEFF to pkg/seaice
1157    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1158    
1159    checkpoint48g_post
1160    --- EOS:
1161    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1162      store total Potential in totPhyHyd for diagnostics & EOS.
1163    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1164    --- Pressure/geopotential gradient:
1165    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1166    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1167      ( changes results of global_ocean_pressure )
1168    o NLFS + z-coord.: add eta*Rho' contribution.
1169    o accurate phiHyd when using interface-W at the middle between 2 centers
1170     ( changes results of ideal_2D_oce )
1171    o includes r* 2nd term in potential gradient.
1172    
1173    checkpoint48f_post
1174    Merging from release1_p12:
1175    o Modifications for using pkg/exf with pkg/seaice
1176      - improved description of the various forcing configurations
1177      - added basic radiation bulk formulae to pkg/exf
1178      - units/sign fix for evap computation in exf_getffields.F
1179      - updated verification/global_with_exf/results/output.txt
1180    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1181      (SBO) core products, including oceanic mass, center-of-mass,
1182      angular, and bottom pressure (see pkg/sbo/README.sbo).
1183    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1184      to avoid negative values in shallow regions.
1185      - updated verification/natl_box/results/output.txt
1186      - updated verification/lab_sea/results/output.txt
1187    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1188    o Added useSingleCpuIO option (see PARAMS.h).
1189    o Updated useSingleCpuIO option in mdsio_writefield.F to
1190      work with multi-field files, e.g., for single-file pickup.
1191    o pkg/seaice:
1192      - bug fix in growth.F: QNET for no shortwave case
1193      - added HeffFile for specifying initial sea-ice thickness
1194      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1195    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1196      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1197    o pkg/seaice:
1198      - adjoint-friendly modifications
1199      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1200    
1201    checkpoint48e_post
1202    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1203    o dynamics: change definition of computational domain & adapt mom_fluxform
1204      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1205    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1206        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1207        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1208        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1209        inverted_barometer solid-body.cs-32x32x1
1210      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1211    
1212    checkpoint48d_post
1213    o in preparation for r*:
1214     a) use pre-computed gradient of hydrostatic potential:
1215        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1216     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1217        => affects results of glob_oce_pressure (different truncation error)  
1218      update output.txt of ideal_2D_oce & global_ocean_pressure
1219    
1220    checkpoint48d_pre
1221    o in preparation for r*:
1222      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1223      pass the 2 comp. of the grad. as arguments to momentum S/R.
1224      but for the moment, only used if it does not change the results.
1225    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1226    
1227    checkpoint48c_post
1228    Modifications in treatment of initial flux forcing controls
1229    to avoid extra storing of flux fields.
1230    
1231    checkpoint48c_pre
1232    o Added tidal_basin_2d experiment (currently 1D!)
1233    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1234    
1235    checkpoint48b_post
1236    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1237     (modification to pressure gradient not yet implemented)
1238    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1239      (for U & V) that are used for vertical advection of momentum.
1240    
1241    checkpoint48a_post
1242    o In preparation for r*, use temp. array to compute vertical transport
1243       in flux-form momentum pkg. => change results of few test-exp.
1244      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1245                        lab_sea, natl_box & plume_on_slope
1246    
1247    checkpoint48
1248    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1249    
1250    checkpoint47j_post
1251    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1252    o moved adexch from forward_step to addummy_in_stepping
1253    o added exch in ctrl_map_...
1254    o aveFreq.=0. at end of cost_final to avoid overwrite in
1255      reverse checkpointing loop
1256    o Yet more changes in gmredi:
1257      * adgmredi_calc_tensor
1258        avoiding all recomputation of gmredi_slope_limit
1259      * adgmredi_x/y/rtransport
1260        added flag for excessive storing to avoid recomp. of
1261        u/v/rtans, dTdx/y/z
1262        -> this is not really necessary and very memory-consuming
1263      * adgmredi_slope_psi:
1264        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1265      * gmredi_slope_limit
1266        re-activated full calculation of taperfct for case 'ac02'
1267    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1268    
1269    checkpoint47i_post
1270    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1271    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1272      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1273    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1274    o gmredi: fix few bugs.
1275    
1276    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1277    This will be a good checkpoint to plug into the ecco-branch.
1278    o few modif.'s to get latest version adjointed
1279      (mainly kick out code in ini_linear_phisurf)
1280    o modif's to run adjoint with exactConserv
1281    o case GM_BOLUS_ADVEC should be cleaned
1282      S/R gmredi_slope_psi should be cleaned
1283    o verification/carbon now has exactConserv=.TRUE.
1284    
1285    checkpoint47g_post
1286    o time-average AIM output: becomes independent from statvars time-average
1287      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1288    o After TAF bug fix:
1289      Tested adjoint of gmredi package.
1290      Tests were done with checkpoint47 rather than with latest
1291      checkpoint47f_post since the latter is broken for the adjoint
1292      verification/carbon/ contains both ADM and TLM gradient checks.
1293    Here they are, before they get changed/lost/stolen.
1294    Mostly modif.'s to fix numerical sensitivities.
1295    Gradient checks OK for
1296    - GM_taper_scheme:
1297      * clipping
1298      * ac02
1299      * linear
1300      * glw91
1301      * dm95
1302      * ldd97
1303    - GMREDI_OPTIONS:
1304      * GM_VISBECK_VARIABLE_K
1305      * GM_NON_UNITY_DIAGONAL
1306      * GM_EXTRA_DIAGONAL
1307      * GM_BOLUS_ADVEC
1308    in conjunction with data.gmredi parameters to be checked in
1309    in a few minutes under verification/carbon/code/
1310    
1311    checkpoint47f_post
1312    Merging from release1_p10:
1313    o modifications for using pkg/exf with pkg/seaice
1314      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1315        and SEAICE_EXTERNAL_FLUXES
1316      - pkg/exf CPP options EXF_READ_EVAP and
1317        EXF_NO_BULK_COMPUTATIONS
1318      - usage examples are Experiments 8 and 9 in
1319        verification/lab_sea/README
1320      - verification/lab_sea default experiment now uses
1321        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1322    
1323    checkpoint47e_post
1324    o created a tag prior to creating a branch
1325    
1326    checkpoint47d_post
1327    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1328      at the bottom boundary had an erroneous half slip boundary condition
1329    o added bottom drag and no slip boundary condition capabilities to
1330      oceanic pressure coordinates code
1331    o added new verification experiment global_ocean_pressure, this experiment is
1332      also described in the tutorial section of the manual
1333    checkpoint47d_pre
1334    
1335    checkpoint47c_post
1336    o Added a verification experiment for a global cubed-sphere ocean run
1337      -  verification/global_ocean.cubed32x32x30
1338      -  uses pkg/therm_seaice and pkg/bulk_forcing
1339    
1340    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1341    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1342      when using P-coordinate; only implemented for atmospheric config.
1343    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1344      NOTES: requires option NONLIN_FRSURF to be "#define".
1345    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1346    
1347    checkpoint47b_post
1348    Merging from release1_p9:
1349    o pkg/seaice
1350      - removed GOTO's and added taf directives
1351      - double precision constants to reduce the g77 (Linux)
1352        to F77 (SGI) differences reported in release1_p8
1353    o tools/genmake
1354      - added SGI options
1355    o verification/testscript
1356      - updated to that of checkpoint47a_post
1357    o verification/global_ocean.90x40x15/input/eedata
1358      - modified for SGI f77 compatibility
1359    o verification/lab_sea
1360      - added description of sea-ice model
1361      - added missing matlab routines
1362      - added test of thermodynamics parallelization
1363    
1364  checkpoint47a_post  checkpoint47a_post
1365  o new pkg: aim_v23  o new pkg: aim_v23
1366   = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.   = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.

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