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revision 1.123 by jmc, Fri Jan 24 17:55:25 2003 UTC revision 1.393 by edhill, Tue Nov 23 21:25:24 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o add PTRACERS (PTR0[1-5]) to testreport output
7    o exf_check_range:
8      * default changed to .TRUE.
9      * will check values for niter0 if debLevA, every timestep if debLevB
10      * STOP in exf_check_range if 'out of range'
11      * range chosen generous to allow for potential extema
12      TBD: a version with stricter range
13           permitted range would be runtime parameters
14    o GMredi:
15      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
16      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
17      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
18    o GCHEM:
19      - move call to GCHEM_FORCING_SEP, so that it is now called before
20        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
21      - introduced a useGCHEM runtime flag and applied it everywhere.
22      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
23        this flag is now only visible within GCHEM-pkg routines.
24      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
25        be replaced by a 3D array that is computed before thermodynamics; for
26        this, the tracer ID iTracer had to be included into the parameter list
27        of ptracers_forcing
28      - set up forward_step for a call to gchem_forcing, that will replace
29        gchem_forcing_int in ptracers_forcing
30      - cleaning up
31    o small cleaning of exch2: remove files that are also in eesupp/src
32    
33    checkpoint56
34    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
35    o mnc: cleanup "full" files--fixes out-of-memory problem
36    o ECCO-GODAE
37      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
38      * fully merged and updated from SIO code
39        windstress sign change affects
40        - exf_inscal_[u/v]stress
41        - sign of xx_tau[u/v] adjustments
42        - signs in cost_scat
43      * ctrl_get_gen: avoid update of tau[u/v] for first few days
44      * natl_box_adjoint updated and compressed
45      * 2-level checkpoint switch added
46        (tested in EXP. 1 of natl_box_adjoint)
47      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
48    o SVD
49      * first complete, non-hacked version for SVD calculations
50      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
51        performed via direct access files admtlm_vector.it????
52        (via ctrl_[un]pack)
53      * optimcycle is used for ARPACK iteration counter
54        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
55      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
56        and add linear transforms where necessary
57      * controls are initial/final SST, SSS (can be extended; need to check
58        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
59    o mdsio: filename info to both stderr, stdout
60    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
61      from sign change
62    
63    checkpoint55j_post
64    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
65      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
66    o add consistent build directories and .cvsignore files to verification
67    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
68    o make all subroutines 30 or less characters in length for certain older
69      compilers to work (a thorough search only turns up two routines in
70      pkg/ptracers)
71    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
72      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
73    
74    checkpoint55i_post
75    o change arrays for total vertical diffusivity (2.D if explicit,
76      3.D if implicit) ; each ptracer uses its own background value.
77    o added mnc/NetCDF output capability to ocn_compon_interf
78      - added bits to verification/cpl_aim+ocn so that it can run on
79        ITRDA and other clusters without the mpirun "-wd" option
80    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
81      configuration
82    o give MNC the ability to create additional files rather than
83      exceeding a specified file size limit "MNC_MAX_FILESIZE"
84      - the default is just less than 2GB which is a practical limit
85        on many systems
86    o Compute the non-local term using either KPP vertical diffusivity (=default)
87       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
88    
89    checkpoint55h_post
90    o add verification test "vermix"
91    o remove all the *_ioinc flags and replace with the single global
92      outputTypesInclusive flag
93    o allow to set a vertical profile of vertical diffusivity for T & S
94    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
95    o useMNC moved from data.mnc to data.pkg
96    
97    checkpoint55g_post
98    o Renaming carbon AD experiments to comply with testreport conventions
99    o Updating adjoint of Held-Suarez hs94.1x64x5
100    o Fixing directives for non-ECCO forward_step, after ECCO directives
101      have been fixed to avoid recomp. of do_oceanic_phys
102      Works well for global_ocean.90x40x15,
103      but recomp. issue remains for carbon
104    o Updating adjoint output for natl_box_adjoint after
105      pkg/ecco has been modified (see taga c55d_post)
106    
107    checkpoint55f_post
108    o rename to timeave_init_fixed
109    
110    checkpoint55e_post
111    o some delicate re-shuffle of store directives to avoid one
112      extra call of do_oceanic_physics
113      affects ecco_the_main_loop.F, do_oceanic_physics.F
114      checkpoint_lev1_directives.h
115    o NB: this may break global_ocean adjoint temporarily,
116      but it is clear how to fix it. Will do later, need this now.
117    
118    checkpoint55d_post
119    o ECCO specific cost function terms (up-to-date with 1x1 runs)
120    o ecco_cost_weights is modified to 1x1 runs
121    o modifs to allow observations to be read in as
122      single file or yearly files
123    o enable to read exf forcing fields as either
124      single file or yearly files (flag useExfYearlyFields)
125    checkpoint55d_pre
126    
127    o switch between 2-level and 3-level checkpointing
128    o add ability of MNC to write local and "partial" (eg. 2D slices where
129      the full 3D field is never actually stored) arrays to NetCDF files
130      with the correct (that is, the complete multi-dimensional) set of
131      array indicies
132      - used in mom_vecinv() to write the diagFreq output
133      - tested (demonstrated) in verification/aim.5l_cs
134    o further mnc-ification
135      - add verification/lab_sea to the list with mnc setups
136      - fix undefined mnc v-names in cd_code
137      - add kpp to mnc output (both snapshot and timeave)
138    o non-hydrostatic code
139      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
140        in calc_gw.F
141      - defaults to viscAh
142      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
143        friction or Leith) in non-hydrostatic mode, as long as there is
144        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
145    o pkg/cost
146      extend simple cost functions to treat time mean quantities
147      (T,U,V) via cost_accumulate_state from cost_tile
148    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
149        be 2 times larger than the minimum size the advection scheme requires.
150        now get a perfect conservation of salt in advect_cs test-exp (updated)
151    o GGL90 (Gaspar's TKE mixed layer)
152      - add horizontal diffusion of TKE, requires exchanges in
153        do_fields_blocking_exchanges, horizontal diffusivity is zero by
154        default. In OPA there is no horizontal diffusion of TKE but the
155        mixing coefficients are computed from a horizontal average of TKE of
156        6 points or so. I think that diffusion has a little more physical
157        justification.
158      - clean up ggl90_calc in the hope of reducing memory usage (this hope
159        was in vain)
160      - mask tke-variable in ggl90_init
161    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
162    o fix biharmonic diffusion on CS-grid.
163    o more obcs stuff
164      - added obcs_external_fields_load as an alternative to the EXF-pkg option
165        for reading boundary values. This routine is called from
166        obcs_prescribe_read
167      - updated obcs_check
168      - changed sponge layer relaxation parameter units for days to seconds
169      - turned off sponge layer by default
170      - changed argument list of OBCS_CALC to myTime+deltaTclock
171      - fixed about 35 bugs in obcs_external_fields_load
172    
173    checkpoint55c_post
174    o obcs stuff
175      - new runtime flags useOBCSprescribe, useOBCSbalance
176      - re-arranged obcs_calc
177      - moved exf_getobcs to obcs_prescibe_read
178        obcs_prescibe_read is called after ORLANSKI stuff
179        and independent of it (executable can contain all).
180      - updated obcs_check
181      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
182        These may be necessary only if tangential velocities are
183        prescribed at OB, not sure, needs testing.
184    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
185      which simplifies the calls and passes the ifc check-bounds test
186    
187    checkpoint55b_post
188    o add a 2D scalar, Z location, exchange_2 routine.
189    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
190      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
191      affects advect_cs results (for the wrong reason): update output.txt
192    o use a more standard discretization for biharmonic viscosity ;
193     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
194      affects results of dome set-up: update output.txt
195    o fix gad_advection.F (CubedSphere part), back to version 1.23
196    o fix bug in mom_vi_del2uv.F (CubedSphere part).
197    
198    checkpoint55a_post
199    o merged code to
200      * prescribe/read time-dependent open boundaries
201        (works in conjunction with exf, cal)
202      * sponge layer code for open boundaries
203      * each boundary N/S/E/W now has its own CPP option
204        (healthy for the adjoint)
205    
206    checkpoint55
207    o up-to-date adjoint of previous breaks
208      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
209      - global_ocean_ebm: adjoint still needs fix (TLM ok)
210      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
211      - carbon: * remove tr1-related adjoint verification
212                * add ptracer as control variable
213    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
214      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
215    
216    checkpoint54f_post
217    o in verification/carbin/ remove experiment related to
218      ALLOW_PASSIVE_TRACER (array tr1 etc)
219      code_ad/ input_ad/ results_ad
220    
221    o add two new packages
222      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
223        + subject to optimization (memory)
224      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
225        + subject to reordering (many GOTOs in the original code)
226        + so far opps is called for every (i,j) point, and then operates in
227          the vertical; one may want to reorder the scheme in order operate in
228          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
229          fields)
230    o overhaul of IO so that we now have flags for MDSIO and/or MNC
231      - all verification tests compile and run with linux_ia32_g77
232      - defaults are compatible with current input files--nothing
233        should change if you were not previously using MNC
234      - MNC output has been added in numerous places (eg. timeave)
235        but there are still a few writes not yet do-able with MNC
236        (this is in progress)
237      - flags now allow for either/or/both use of MDSIO and MNC and
238        documentation will soon follow
239      - numerous small formatting cleanups for ProTeX
240    o add version info (via BUILD_INFO.h) to MNC and stdout
241    
242    checkpoint54e_post
243    o add two new packages
244      - pp81 (Packanowski and Philander, 1981), Richardson number and
245        stratification dependent mixing
246      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
247      - these scheme operate in a similar manner as KPP (without ghat, of
248        course), however there is only one diffusivity that is used for both
249        temperature and salinity (and passive tracers)ç
250    o add offline package
251    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
252      provided by Stephanie Dutkiewicz
253    o genmake2: add ability to search for C compilers and cleanup test output
254      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
255    
256    checkpoint54d_post
257    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
258    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
259      leading to additional shift by 5 days each year of integration
260       (i.e. leading to considerable offset over the years)
261    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
262    o start with no AB and no initial filtering (staggerTimeStep):
263      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
264    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
265      (external loading & cpl import/export stay in forward_step.F)
266    o update coupling interface to work with new staggerTimeStep
267    o change MDSIO ptracers_pickup.
268    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
269    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
270    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
271    
272    checkpoint54c_post
273    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
274      this affects (truncation error) output.txt of test-exp:
275       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
276    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
277    o change Qnet to always be the net heat flux, (+upward).
278      affects (truncation error) output of natl_box exp.: updated
279    o define the max number of passive tracers in PTRACERS_SIZE.h
280    o start to test mnc routinely in exp0
281    o add sea-ice loading (sIceLoad) as a new forcing field.
282    
283    checkpoint54b_post
284    o add testreport "-j JOBS" option for parallel builds (tested and pretty
285       impressive on Altix and Opteron systems)
286    o diagnostics can now write NetCDF files through the mnc package
287    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
288    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
289    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
290      affects (truncation error) output of lab_sea & natl_box exp.: updated
291    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
292    
293    checkpoint54a_post
294    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
295    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
296    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
297    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
298      + internal_wave (shift in writing cg2d_ini_res)
299    checkpoint54a_pre
300    
301    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
302      - modified verification/lab_sea and natl_box_adjoint accordingly
303    
304    checkpoint54
305    checkpoint53g_post
306    o prepare splitting of thermodynamics: store convect.counter in common block
307    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
308      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
309    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
310    o new parameter "nShapS": allow to treat differently S from T (nShapT)
311    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
312    o restore adjointability
313    
314    checkpoint53f_post
315    o modifications that affect AIM experiment results (update output.txt):
316      - no advection of S at top interface Nr (pkg/generic_advdiff)
317      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
318    o AIM pkg:
319      - include stability function into surf.Flux derivative relative to Tsurf
320      - calculate clear-sky radiation & surface temp. change (for diagnostics)
321    
322    checkpoint53e_post
323    o merged cylindrical coord configuration
324    o added rotating_tank experiment
325    checkpoint53e_pre
326    
327    checkpoint53d_post
328    o faulks upgraded: re-generate output.txt that have changed:
329       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
330    o Added Bryan and Lewis, 1979, vertical diffusivity profile
331    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
332    o added Sadourny discretization of Coriolis
333      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
334      - re-enabled use of omega3 (useAbsVorticity)
335    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
336      vector-invariant equations
337      - note: does *NOT* yet use same variable visc. for no-slip BC's.
338    o recoded the lateral boundary conditions for non-hydrostatic w, this time
339      hopefully without new bugs
340      - still to do: biharmonic friction for non-hydrostatic w
341    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
342    o regenerated output for global_ocean_ebm (using -ieee)
343    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
344      of mom_common/
345      - simple re-arrangement of instructions within computing loop
346    checkpoint53d_pre
347    
348    checkpoint53c_post
349    o new version of coupler for AIM+thSIce and Ocean models
350     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
351     - land: change Evaporation of snow
352     - aim with thSIce: fix bug in snow-precip.
353    o changes to calc_gw.F
354     - bug fix for w^2 term near the bottom boundary
355     - (hopefully) improve the lateral slip boundary condtions for use with
356        partial/looped cells
357      - because the bug fix changes two verification experiments anyway (exp5
358        and plume on slope), change the lateral boundary condition from half slip
359        to the value of no_slip_sides
360    o ebm package wasnt quite up to the parallel task. Fixed that.
361    o Adjoint of EBM package + verification
362      * TLM OK
363      * ADM not sufficient accuracy yet (needs further testing)
364    
365    checkpoint53b_post
366    o Commiting new energy balance model to repository
367      * package is pkg/ebm
368      * verif. is verification/global_ocean_ebm
369      * references are in ebm_driver.F
370    C      * X. Wang, P. Stone and J. Marotzke, 1999:
371    C        Global thermohaline circulation. Part I:
372    C        Sensitivity to atmospheric moisture transport.
373    C        J. Climate 12(1), 71-82
374    C      * X. Wang, P. Stone and J. Marotzke, 1999:
375    C        Global thermohaline circulation. Part II:
376    C        Sensitivity with interactive transport.
377    C        J. Climate 12(1), 83-91
378    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
379    C        Destabilization of the thermohaline circulation
380    C        by atmospheric eddy transports.
381    C        J. Climate 7(12), 1870-1882
382    o Will need long integration testing.
383    checkpoint53b_pre
384    
385    o created pkg/mom_common in preparation for variable viscosity code
386    o renamed and split ini_mnc_io
387    o pkg/land: only liquid water can diffuse or run-off
388    o AIM using land: soil wetness availability account for snow
389    o added printMapIncludesZeros to EEPARMS namelist
390    
391    checkpoint53a_post
392    o restore TAMC compatiility for exf_constants.h
393      (no usage of _d in .h)
394    o Additional storing in KPP in an attempt to fix
395      TAMC problem with adjoint of KPP code.
396      (no success...)
397      Identical code works fine with TAF.
398    o Fixed verification/natl_box_adjoint experiments.
399      Initial conditions for Experiments 4 and 5 are now
400      set to "SEAICE_initialHEFF=0", which is more reasonable,
401      and hence gives results closer to that of Experiment 2.
402      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
403    
404    checkpoint53
405    o stable checkpoint with up to date adjoint
406      TLM tests only run for 1st grdchk at the moment. Its unclear if
407      this is a code problem or a problem with resetting code for g_
408      variables that is being autogenerated wrong.
409      Otherwise:
410       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
411       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
412         are both still in chaos following their security messes.
413    
414    checkpoint52n_post
415    o various build (mostly genmake2) changes including:
416      - ability to build/run more easily within Cygwin and MacOS X
417      - more complicated Makefiles with a stronger dependence on Gnu Make
418    o pkg/seaice modifications
419      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
420        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
421        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
422      - changed proxy for geostrophic velocity and updated
423        verification/lab_sea/results/* accordingly
424      - removed ADI dynamic solver from pkg/seaice
425      - replaced all occurrences of 1/CSTICE or 1/CSUICE
426        they caused a segmentation fault under certain circumstances
427      - removed unused field WATR
428    o bug fix in exf-package:
429      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
430         now reflect that.
431    o small fixes in the cal-package:
432      - set reference date to first of January for the 'model'-calendar
433      - failing of cal_CheckDate in cal_FullDate now actually results in a
434        warning
435    o small modifications in exf-package to increase flexibility:
436      - change climtempfreeze from a constant to a runtime parameter that
437        is specified in data.exf_clim (default = -1.9)
438      - introduce runtime parameter windstressmax (default = 2.0) that is
439        specified in data.exf
440    o fix in pkg/thsice:
441      - update Evap (Tsf changes) to be consistent with Latent heat flux
442      - maintain snow precipitation unchanged (even if Tsf >=0).
443     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
444    
445    checkpoint52m_post
446    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
447      this does not change any of the results, because myIter=0 in swfrac always
448      lead to jwtype=2 (the default anyway), but the call makes little sense
449      as a default
450    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
451    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
452      atmospheric model (AIM) to use it ; add a "slab ocean" component.
453    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
454    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
455    o extending useSingleCpuIO option to work with new exch2 I/O format
456      - old-style, missing-tile I/O is still accessible by defining CPP
457        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
458    o monitor package can write to NetCDF files and/or STDOUT
459    o fix re-definition bug in MNC_GRID_INIT_ALL()
460    o doc/api_reference added
461      - a framework for building an API Reference Manual using all
462        the "protex" comments embedded in the code
463      - see pkg/generic_advdiff, pkg/mnc for examples
464    o MNC:
465      - make myThid the last argument for all subroutines
466      - new default for the grid files: NO halos
467      - add useMNC and other run-time flags
468      - separate per-file-group handling of the unlimited dimension
469      - early initialization of MNC w/ flags read at the eeboot stage
470        and lookup tables set in initialize_fixed
471      - write all MNC output to a freshly-created directory
472    o thermodynamics sea-ice (thsice) is now tested with testreport.
473    o test exp. advect_cs: use the standard cs32 grid ; update output.
474    o Added functionality to grdchk:
475      pick global i,j,k position (or nearest wet) where to perform check.
476    
477    checkpoint52l_post
478    o new land formulation:
479      a) use ground enthalpy as prognostic variable to ensure exact
480         energy conservation.
481      b) account for water temperature and for latent heat of freezing
482         in all processes (rain, run-off, ground storage)
483      c) compute surface and ground temperature implicitly.
484    o aim_v23 modification for new land model:
485      a) Treat separately land / ocean / sea-ice surface fluxes
486         to allow implicit computation of land & sea-ice surface temp.
487      b) add snow precipitation.
488    checkpoint52l_pre
489    
490    o fix problem (when 1 tile is empty) in min/max monitor.
491    o fix bug in timeAve (u,vZetatave in common block)
492    o no restoring terms under ice for pkg/seaice
493    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
494    o bug fix for pkg/seaice pickups
495    o change MNC call locations and add coordinate attributes
496    o mask vorticity at the corner ; affects global_ocean.cs output
497    o fix ini_curvilinear_grid ; test CS experiments with mpi
498    o aim.5l_cs: modify sea-ice fraction input file ; update output
499    o exf: Adding simple range check routine for exf fields after read
500    
501    checkpoint52k_post
502    o removed top-level directory "diags"
503      - we migrated these functions to pkg/timeave a long time ago
504    o fixed bug introduced in pkg/monitor
505    o accuracy ctrlprec = 32 insuffient for gradient checks using
506      averaged fields (I/O via cost_averages)
507      -> use ctrl.h in active_file*.F to control I/O precision.
508    o paramter list of CALL ADTHE_MAIN_LOOP
509    o added initial do_the_model_io to ecco
510    o set all ...Freq to zero after cost_final
511      taveFreq, dumpFreq, pChkptFreq
512    o MAIN and ECCO differentiability restored
513    
514    checkpoint52j_post
515    o fix nchklev in tamc.h for global_ocean...
516    o Bringing flow and store directives up-to-date
517    o Really weird thing!
518      call do_the_model_io from the_main_loop with parameters
519      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
520      TAF places a faulty re-call of initialise_varia
521      after cost_final call which should not be there!
522    checkpoint52j_pre
523    
524    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
525      error messages
526    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
527    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
528      debug output
529    o modfied mdsio_writefield.F to handle non-global files under exch2
530    o update AIM Cubed-Sphere exp (aim.5l_cs):
531      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
532    o update AIM Equatorial Channel exp:
533      use standard aim_v23 pkg and change the SST fields to be more realistic.
534    o globalFile now works with exch2
535    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
536      mon_vort3.F to make exch2 friendly with >1 tile per cube face
537    o limit timeave output for hi-res integrations
538    
539    checkpoint52i_post
540    o removed CPP_EEOPTIONS.h from verification/*/code
541    o updated the tiling for global_ocean_pressure
542    checkpoint52i_pre
543    
544    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
545      the old pkg/aim).
546    
547    checkpoint52h_pre
548    o shortened offending lines in exch2_send_rx?.template
549    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
550    o genmake2: add build & execute test for NetCDF code
551    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
552      old grid files, moved CPP_EEMACROS.h to pkg/exch2
553    o added useSingleCPUIO flag to monitor.F and mon_out.F
554    o added temporary hack for sea-ice dynamics on the cube:
555      metric terms are ignored and it is assumed that
556      there is no sea-ice on cube faces 1, 2, 4, and 5.
557    
558    checkpoint52f_post
559    o added exch2 cube routines to pkg/exch2
560    o modified hs94.cs-32x32x5 to use it
561    o added new grid files to hs94.cs-32x32x5
562    checkpoint52f_pre
563    
564    checkpoint52e_post
565    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
566      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
567    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
568      to work with implicit vertical advection and AB ;
569    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
570    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
571     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
572    checkpoint52e_pre
573    
574    o fix bug in impldiff when Nr=1 or Nr=2.
575    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
576    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
577    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
578      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
579    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
580    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
581    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
582    
583    checkpoint52d_post
584    o re-tiled many expts to allow comparison in multi-processor mode
585      - updated output accordingly
586      - changed hs94.128x64x5 to use intial T from file rather than use the
587        random number generator
588    o add infrastructure in model routines for fizhi and gridalt packages
589    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
590    o changes to permit hi-res, cubed-sphere, configuration
591      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
592      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
593      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
594        of surface winds for the cube
595      (A verification experiment, based on global_ocean.cs32x15, but with
596       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
597       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
598       complete with example surface forcing files and matlab scripts to look
599       at the output and compare it with that of global_ocean.cs32x15.)
600    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
601       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
602       to conform to the common rule.
603    o check-in the first version of the coupler + interfaces for multi-components
604       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
605       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
606       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
607       - ocean and atmos. share the same horizontal grid (no interpolation).
608       - exchanges between component and coupler is done in forward_step
609    o new verification experiment, cpl_aim+ocn:
610       coupled ocean - AIM atmosphere on cs32 grid.
611    
612    checkpoint52d_pre
613    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
614    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
615    
616    checkpoint52c_post
617    o Fixing OPTIONS files for use of exf:
618      - ALLOW_ECCO not needed
619      - ECCO_CPPOPTIONS.h should not be included from
620        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
621        as has been the case in the past
622      - All cal/exf related options are currently set in
623        single header file. Should remain so until we
624        agree on a consistent new policy.
625    o Removed all CPP options for cal package.
626      cal has no more CPP options.
627    o modified STOREs in GAD_ADVECTION
628    o corrected key comp. for passkey
629    
630    checkpoint52b_post
631    o new version: "thsice" of thermodynamic sea-ice pkg:
632     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
633     - modify fluxes but do not change theta directly;
634     - light cleaning of bulk_force pkg (still needed with thsice).
635     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
636       + output_thsice.txt to test thsice & bulk_force pkgs.
637    o put back grid & coriolis monitor output.
638    checkpoint52b_pre
639    
640    o call "do_the_model_io" at the beginning (=> dump initial state)
641    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
642    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
643      (need info on NUMBER_OF_PTRACERS)
644    o missing PTRACERS headers in some routines
645    o default tamc.h in pkg/autodiff supposed to crash
646      to ensure proper customization
647    
648    checkpoint52a_post
649    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
650      - moved surfaceTendencyTice from pkg/seaice to main code
651      - subroutine FREEZE_SURFACE now limits only surface temperature
652        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
653        => new output.txt for global_ocean.cs32x15 & global_with_exf
654      - keep the old version of FREEZE for backward compatibility;
655        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
656      - corresponding modifs for TAF directives
657    o added surface flux output variables to TIMEAVE_STATVARS
658    o time-averaged output for pkg/ptracers
659    o fix problem with ECCO-related divided adjoint
660      snapshot file was missing some ad-variables,
661      but no warning issued by TAF
662    
663    checkpoint52a_pre
664    o some bug fixes for #undef REAL4_IS_SLOW
665    
666    checkpoint52 = ecco_c52_e35
667    o after testing adjoints of checkpoint51u_post
668    
669    checkpoint51u_post
670    o this is the post-merge tag of the ecco-branch
671      (needs another clean checkout and re-testing)
672    o various natl_box_adjoint configs and results
673      but no input fields
674    o obcs adjoint not yet merged!
675    o adding ECCO global 1x1 and 2x2 degree configs
676    o updated/extended some store directives for seaice
677    o pkg/ecco now containes ecco-specific part of cost function
678    o top level routines the_main_loop, forward_step
679      supersede those in model/src/
680      previous input data.cost now in data.ecco
681      (new namelist ecco_cost_nml)
682    o in ctrl/ cleaned some cross-dependencies and updated CPP options
683    
684    checkpoint51t_post
685    o this is the pre-merge tag of the ecco-branch
686    
687    checkpoint51s_post
688    o cleanup: removed various obsolete #define-s
689    o pkg/grdchk
690      - renamed 'ph-grd 3' to 'grad-res'
691      - merged from ecco-branch
692        (remaining bug fixes for obcs gradient checks)
693      - additional high-precision output for testreport
694        (grep for 'precision_grdchk_result')
695    
696    checkpoint51r_post
697    o cleaned up or removed CPP_OPTIONS.h files
698    o updated results for some of the tests to reflect the new
699      optfiles (-ieee: -O0 instead of -O3)
700    
701    checkpoint51q_post
702    o cd_code:
703      - moved cd_scheme.F -> cd_code_scheme.F
704      - separate read_checkpoint from cd_code_ini_vars.F
705      - separated cd_code part from write_checkpoint
706      - updated AD_SOURCE, generated .flow
707      - added CD_CODE_VARS.h to the_main_loop
708      - Moving cd_code specific store dir.s to pkg/cd_code
709    o ctrl package totally restructured
710      - pack/unpack now optional and decoupled from
711        xx_/adxx_ I/O
712      - ctrl_pack/unpack cleaned
713        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
714      - confined inclusion of AD_CONFIG.h to where necessary.
715    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
716    
717    checkpoint51p_post
718    o create initial cd_code package
719      - WARNING: the initialization of fields within packages
720        is broken because INI_FIELDS (where READ_CHECKPOINT is
721        called) is called *before* PACKAGES_INIT_VARIABLES.
722        This seems to be backwards since
723        1) its important to initially zero the entire field including
724           the "halo" region
725        2) zeroing needs to be done *before* reading pickup info
726           and the pickup call might or might not happen in any
727           particular run
728      - this needs an overhaul for R2
729    o cleanup verification/*/code/GMREDI_OPTIONS.h
730    o cleanup testreport
731    
732    checkpoint51o_post
733    o bringing AD-related verif's up to date with genmake2
734      - carbon/
735      - global_ocean.90x40x15/
736      - hs.94.1x64x5/
737      - (front_relax/ )
738    o (more) consistent directory structure for AD-related verif.'s
739    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
740    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
741    o bug fix in find_alpha.F for MDJWF:
742      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
743        change rho -> rho-rhoConst
744      - replace call find_rho to find_rhonum
745    o initialisation of rFlx extended to full array (required by TAF)
746      and shifted to thermodynamics
747    o removed PTRACERS.h in ptracers routine
748    o added surfacetendencyPtr to S/R parameter list pracers_forcing
749    o Correcting initialisations for fVerU, fVerV.
750    o helping TAF to recognize dependency on kUp for
751      fVerU, fVerV
752    o Replacing delZ by delR in pkg/ctrl/
753    checkpoint51o_pre
754    
755    o undid all of cp51 pending some cleanups and discussion
756    o added the [#include "AD_CONFIG.h"] statement to all files that need
757       it for adjoint/tl #defines
758     o re-worked the build logic in genmake2 to support AD_CONFIG.h
759     o removed tools/genmake since it no longer works
760    
761    checkpoint51n_post
762    o modifications to make FREEZE flux visible to pkg/kpp
763      - moved surfaceTendencyTice from pkg/seaice to main code
764      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
765      - subroutine FREEZE now limits only surface temperature
766        (this means new output.txt for global_ocean.90x40x15,
767         global_ocean.cs32x15, and global_with_exf)
768    o added surface flux output variables to TIMEAVE_STATVARS
769    
770    checkpoint51n_pre
771    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
772    o added [#include "AD_CONFIG.h"] to all files that use the following
773      defines:
774      - ALLOW_ADJOINT_RUN
775      - ALLOW_TANGENTLINEAR_RUN
776      - ALLOW_ECCO_OPTIMIZATION
777    
778    checkpoint51m_post
779    o incorporating changes to get TAMC/TAF working in genmake2
780      - added new TAMC/TAF targets to the Makefile
781      - various cleanups related to package handling
782      - these changes should have no impact on the forward model
783    
784    checkpoint51l_post
785    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
786     - faster algorithm for cal_addtime.F
787     - higher precision arithmetic, where needed
788     - pkg/exf *startdate variables changed from calendar date to
789       model integration time
790    
791    checkpoint51l_pre
792    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
793    o enable to apply restoring on S & T only in a latitude band.
794    o update output (external_forcing_surf modif. change truncation errors)
795       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
796    
797    checkpoint51k_post
798    o change default to: useNHMTerms=.FALSE.
799     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
800       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
801     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
802        exp1, ideal_2D_oce
803     - change data file of oceanic exp (leave the results unchanged for now)
804       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
805    o set gravitySign automatically according to the vertical coordinate used
806      (and change sign: back to "logical" value: +1 when R increases downward)
807    o added an include barrier to the default CPP_OPTIONS.h and
808      removed the #include "PACKAGES_CONFIG.h" from it
809    o fix a bug in mom_fluxform (from chk51j_post)
810    
811    checkpoint51j_post
812    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
813    o adjusted some flow directives (dynamics, thermodynamics)
814    o added cubed-sphere case to test cost function
815    o heckpoint_lev?_directives.h now include
816      pkg-specific directives, whenever those are enabled.
817    o Moving pkg-specific flow directives to corresponding pkg
818      Moving pkg-specific differentiation list to corresponding pkg
819      Moving pkg-specific checkpoint-lev storing to corresponding pkg
820      ---> conventions are
821           - pkg_ad.flow
822           - pkg_ad_diff.list
823           - pkg_ad_check_lev?_dir.h
824    
825    checkpoint51i_post
826    o merge of the branch-genmake2
827      - knowingly breaks the older genmake
828      - automatic generation of all ALLOW_${PKG_NAME} defines
829      - new testreport supersedes older testscript
830    o large number of package inclusion and header cleanups
831    checkpoint51i_pre
832    
833    o new output for adjoin of global ocean vector invariant
834    o fix for checkpoint of thermodynamic seaice and bulk_force
835    o Steph gchem various cleanups
836    
837    checkpoint 51h_pre
838    o fixed some single quotes
839    o modify gchem pkg to be more versatile
840    o modifications to clean up dic pkg
841    o add pkg/cfc
842    
843    checkpoint51g_post
844    o provide links for ARPACK and ADM*TLM
845    o start removing verification/vero/
846    o update AD-related stuff
847      (in particular some IF-statements in model/src/ routines)
848    o adding to verification/global_ocean.90x40x15/ adjoint of
849      vector invariant setup
850    
851    checkpoint51f_post
852    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
853    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
854      of tracer Green's fucntions for ocean inversion project.
855    
856    checkpoint51f_pre
857    o Added on-the-fly spatial interpolation capability
858        "USE_EXF_INTERPOLATION" to pkg/exf.
859      - This is a temporary Cartesian-grid hack until
860        the super-duper ESMF coupler becomes available.
861      - See verification/global_with_exf/README for usage example.
862      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
863        flags and modified pkg/seaice accordingly.
864    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
865        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
866        non-local transport term.
867    
868    checkpoint51e_post
869    o pkg/mom_vecinv:
870      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
871      - add time-ave diagnostic of vorticity advection.
872    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
873    o atmospheric geopotential: - include water vapor effect;
874                                - use p^kappa in p* scaling.
875    o land pkg: read initial state from files.
876    o AIM : add stratospheric drag in the upper level
877    
878    checkpoint51d_post
879    o change function ILNBLNK (=> last non-blank char.) to return zero
880      (instead of the string length) when the string. char is empty
881    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
882    o modif's to restore TAMC compatibility
883      - avoid "_d" constructs in PARAMETER declarations
884      - avoid interrupting lines by comment lines
885    o Use cluster local disks for purely local I/O
886      vs. globally visible disks needed for ctrl stuff
887      (merged from ecco-branch)
888      - new active_file_loc... and mdsio_..._loc routines
889      - affected packages: autodiff, ctrl, grdchk, mdsio
890    
891    checkpoint51c_post
892    o introducing integer flag debugLevel
893      - debLevZero: suppress all output
894      - debLevA: standard
895      - debLevB: equivalent to current debugMode=.TRUE.
896    o introducing pathname variable mdsioLocalDir for mdsio
897      that can be specified at runtime
898      (relevant for cluster I/O to local disk)
899    `
900    >>>checkpoint51b_post
901    adjoint of ptracers
902    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
903    o extended state in checkpoint_lev?, etc.
904    o alternative ctrl/cost with tr1 or ptracer
905    o new comlev1_bibj_ptracers
906    o new ptracers.flow
907    o made ptracers_forcing same as external_forcing_s
908    o added verification for adjoint with ptracers
909      - adm. grdchk fail so far
910      - tlm. grdchk OK
911      - checked tapelev/comlev recomputations: OK
912    <<<checkpoint51b_pre
913    
914    checkpoint51a_post
915    o added code for biogeochemistry package
916      - new pkgs: dic, gchem
917      - new subroutine in ptracers
918    o modify code for biogeo packages
919      - in model/src and pkg/ptracers
920    
921    checkpoint51
922    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
923      - autodiff, ctrl, exf, grdchk, seaice
924      kept separate packages
925      - cost, ecco, obcs
926    o updating verification/internal_wave, verification/lab_sea
927      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
928    
929    checkpoint50i_post
930    o Preparing next differentiable checkpoint and sync
931      of MAIN vs. ecco-branch
932      - 1st step: this one is differentiable
933      - 2nd step: next(! not this) checkpoint will have updated packages
934                  from ecco-branch)
935    
936    checkpoint50h_post
937    o new package "land": provide surface BC for AIM.
938    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
939    o AIM: use true log-P extrapolation for near surface temp (= as in
940        F.Molteni paper) ; update aim.5l_cs output.
941    o New variable in PARM03 for more flexible pickups
942    o somewhat cleaned package initialisation sequence for
943      ctrl/ cost/ ecco/ in packages_... routines
944    
945    checkpoint50g_post
946    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
947      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
948      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
949        made the default because of faster convergence than ADI
950    
951    checkpoint50f_post
952    o exf totally restructured
953      - replaced all exf_set_ routines by one generic exf_set_gen.F
954        and made sure it's still differentiable
955      - split exf_getffields.F into new exf_bulkformulae.F
956      - exf_inscal_/exf_outscal_ suffixes consistent with field names
957      - updated adjoint/makefile and relevant verif. accordingly
958    
959    checkpoint50f_pre
960     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
961          + change Evap over land. (update aim.5l_cs output)
962     o added missing .cvsignores and made uniform across expts
963     o changed configuration of tidal_basin_2d expt
964     o added pkg/debug functions for tracing code in fatal crashes
965     o tidied pkg/monitor to use MONITOR_OPTIONS.h
966     o new fn in pkg/monitor to stop model if solution grows too big
967     o removed lots of single quotes from comments
968    
969    checkpoint50e_post
970    o make KPP work with PTRACERS
971     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
972       nearly a copy of kpp_transport_s
973     - there is no analogue to SurfaceTendencyS, so I have to use
974       gPtr(of the surface layer) instead
975    o add a new platform SunFire+mpi (SunFire 15000) to genmake
976    checkpoint50e_pre
977    
978    checkpoint50d_post
979    o change kpp output from multiple-record state files to single-record state
980      files analogous to write_state.F
981    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
982      analogous to the cg2d-related output.
983    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
984      so that writing to internal file fn (with length 512) fails.
985    checkpoint50d_pre
986    
987    checkpoint50c_post
988    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
989    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
990    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
991    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
992    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
993    
994    checkpoint50c_pre
995    Merging from release1_p13:
996    o bug fix for pkg/seaice dynamic solver
997    o Added SEAICE_initialHEFF to pkg/seaice
998    
999    checkpoint50b_post
1000    o store u*,v* in gU,V instead of in guNm1,gvNm1
1001    o in order to put the momForcing out of the Adams-Bashforth:
1002      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1003      to timestep.F
1004    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1005    o re-generate output for highly sensitive test-exp:
1006       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1007    
1008    checkpoint50b_pre
1009    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1010    o corrected CPP option mismatch in exf_Bulk... functions for case
1011      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1012    
1013    checkpoint50a_post
1014    o Bug fix for merging between c50 and KPP.
1015      ikey was passed from thermodynamics to kpp_calc via
1016      common block rather than being recomputed in kpp_calc,
1017      in contradiction with new key itdkey.
1018      New key ikppkey created, and tamc.h headers updated.
1019    
1020    checkpoint50
1021    - 2nd step of merge with ecco-branch:
1022      merge changes in ecco-branch back into main trunk
1023    - bug fix in find_alpha
1024    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1025    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1026    - merged some sliced AD support routines
1027    
1028    checkpoint49
1029    merged from ecco-branch:
1030    o exf:
1031      - Enable initialisation of forcing fields to constant
1032        (runtime) values.
1033      - in exf_getffields.F
1034        Reduce i-/j-loop to interior domain, discarding overlaps.
1035        That also fixes wrong TAF-key computations for key_1, key_2
1036        with bulf formulae.
1037      - exf_init.F modify #ifdef for exf_init_evap
1038      - exf_getffieldrec.F, ctrl_getrec.F
1039        The following INT-usages are not safe:
1040          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1041          fldcount = int(fldsecs/fldperiod) + 1
1042        and were modified.
1043    o autodiff: checkpoint_lev...
1044      - updated storing for bulk formulae (some arrays were missing)
1045      - added state for seaice package
1046      - synchronized with main branch
1047    o DIVA:
1048      Modif.s in
1049      - the_main_loop.F
1050      - the_model_main.F
1051      and added cost_final_restore.F cost_final_store.F
1052      o With these changes, it is possible to fully separate
1053        the first forward run to compute the cost function (mdthe_main_loop)
1054        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1055        into separate model executions.
1056        This enables better tuning of DIVA to given queue sizes.
1057      o Loss of cost function value in consecutive DIVA runs is
1058        fixed by storing to 'costfinal' file.
1059      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1060        beginning/end of adjoint integration is accounted for.
1061      The current changes apply to TAF-1.4.26.
1062      TAF has one remaining bug, requiring one manual change
1063      (see MITgcm manual).
1064    o cal: synchronized between MAIN and ecco-branch
1065    
1066    checkpoint48i_post
1067    o Changes to restore differentiability of code w.r.t. previous tag
1068      (mostly adding new routines to make list and replacing
1069      pressure by totPhiHyd).
1070    o Updated and merged grdchk package
1071      - has both ADM and TLM checks
1072      - works for single- and multi-proc.
1073      - output cleaned
1074      - worked successfully for parallel DIVA
1075    o genmake:
1076      - Adding -platform=SP4
1077      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1078    o Modif. for DIVA:
1079      ctrl_unpack should not be called in intermediate DIVA interval.
1080      (similar thing would apply for active files such as
1081      tbar, sbar, psbar, which should not be reinitialised;
1082      only relevant for ecco-branch)
1083    
1084    checkpoint48h_post
1085    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1086    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1087    o Added SEAICE_initialHEFF to pkg/seaice
1088    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1089    
1090    checkpoint48g_post
1091    --- EOS:
1092    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1093      store total Potential in totPhyHyd for diagnostics & EOS.
1094    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1095    --- Pressure/geopotential gradient:
1096    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1097    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1098      ( changes results of global_ocean_pressure )
1099    o NLFS + z-coord.: add eta*Rho' contribution.
1100    o accurate phiHyd when using interface-W at the middle between 2 centers
1101     ( changes results of ideal_2D_oce )
1102    o includes r* 2nd term in potential gradient.
1103    
1104    checkpoint48f_post
1105    Merging from release1_p12:
1106    o Modifications for using pkg/exf with pkg/seaice
1107      - improved description of the various forcing configurations
1108      - added basic radiation bulk formulae to pkg/exf
1109      - units/sign fix for evap computation in exf_getffields.F
1110      - updated verification/global_with_exf/results/output.txt
1111    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1112      (SBO) core products, including oceanic mass, center-of-mass,
1113      angular, and bottom pressure (see pkg/sbo/README.sbo).
1114    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1115      to avoid negative values in shallow regions.
1116      - updated verification/natl_box/results/output.txt
1117      - updated verification/lab_sea/results/output.txt
1118    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1119    o Added useSingleCpuIO option (see PARAMS.h).
1120    o Updated useSingleCpuIO option in mdsio_writefield.F to
1121      work with multi-field files, e.g., for single-file pickup.
1122    o pkg/seaice:
1123      - bug fix in growth.F: QNET for no shortwave case
1124      - added HeffFile for specifying initial sea-ice thickness
1125      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1126    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1127      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1128    o pkg/seaice:
1129      - adjoint-friendly modifications
1130      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1131    
1132    checkpoint48e_post
1133    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1134    o dynamics: change definition of computational domain & adapt mom_fluxform
1135      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1136    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1137        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1138        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1139        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1140        inverted_barometer solid-body.cs-32x32x1
1141      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1142    
1143    checkpoint48d_post
1144    o in preparation for r*:
1145     a) use pre-computed gradient of hydrostatic potential:
1146        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1147     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1148        => affects results of glob_oce_pressure (different truncation error)  
1149      update output.txt of ideal_2D_oce & global_ocean_pressure
1150    
1151    checkpoint48d_pre
1152    o in preparation for r*:
1153      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1154      pass the 2 comp. of the grad. as arguments to momentum S/R.
1155      but for the moment, only used if it does not change the results.
1156    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1157    
1158    checkpoint48c_post
1159    Modifications in treatment of initial flux forcing controls
1160    to avoid extra storing of flux fields.
1161    
1162    checkpoint48c_pre
1163    o Added tidal_basin_2d experiment (currently 1D!)
1164    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1165    
1166    checkpoint48b_post
1167    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1168     (modification to pressure gradient not yet implemented)
1169    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1170      (for U & V) that are used for vertical advection of momentum.
1171    
1172  checkpoint48a_post  checkpoint48a_post
1173  o In preparation for r*, use temp. array to compute vertical transport  o In preparation for r*, use temp. array to compute vertical transport
1174     in flux-form momentum pkg. => change results of few test-exp.     in flux-form momentum pkg. => change results of few test-exp.

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