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revision 1.66 by jmc, Tue Mar 5 15:36:06 2002 UTC revision 1.419 by edhill, Fri Dec 17 21:28:26 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 CF-style coordinate variables to MNC
7      - just a first cut:  numbers are meaningless on the cubesphere and
8        missing along the T axis but otherwise it works!
9    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
10    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
11    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
12      this is based directly on what the model compute, so that the content of
13      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
14    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
15    o clean up build options files for SunOS, in particular
16      - remove -traditional from xmakedepend
17      - change -xarch=v9 to -xarch=native for f77
18      - restore use of make (not gmake)
19      - add CC=gcc if using g77
20    o changes per discussion of AM, JMC, & EH3 today:
21      - move redundant "grid" variables out of "state" -- in preparation of
22        creating proper CF-style coordinate variables and in recognition
23        that any/all grid variables can be easily copied (eg. w/NCO) from
24        the grid files into any of the other NetCDF files
25      - *always* output grid variables with MDSIO (this will eventually be
26        changed)
27      - output MNC grid file if useMNC is true
28    o every instance of _END_MASTER() has been found and replaced with
29      _END_MASTER( myThid ) in order to satisfy certain picky Sun
30      preprocessors
31    o re-arrange diagnostics pkg initialisation:
32     - allow each package to extend the available diagnostics list
33     - add some checking and fix small problems (multi-threaded, ...)
34     - new S/R diagnostics_fill (replace fill_diagnostics):
35       look through the short list of active diag. (instead of the long list)
36       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
37    
38    checkpoint57a_post
39    o this set of changes restores TAMC compatibility
40      tested for global_ocean.90x40x15 adjoint on trough
41      (what a pain)
42    
43    checkpoint57a_pre
44    o some modifs in tools/build_options for sunos
45    o call ctrl_pack for ctrl at end for optimcycle=0
46    
47    checkpoint57
48    o add horizontal bi-harmonic viscosity for vertical velocity
49      - new parameter viscA4W (defaults to viscA4)
50      - affects only non-hydrostatic code
51      - to be done: no-slip lateral boundary conditions
52    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
53    o implement Implicit Vertical advection for pTracers
54    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
55      (implemented also for implicit vertical diffusion & advection)
56    o OBCS: extend application of tracer open boundary conditions
57      to a strip beyond the boundary of width Olx/Oly
58    o add call monitor to TAF set of required calls (flow directives)
59      and include in natl_box_adjoint
60    o untangle a few ifdefs related to cost, ctrl, autodiff
61      untangel a few ALLOW_ECCO_OPTIMIZATION
62    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
63      (theta2, salt2 in ecco_cost_weights)
64    
65    checkpoint56c_post
66    o OBCS as control variables
67      - update ctrl_ad_diff.list, obcs_ad_diff.list
68      - remove balance of obcs controls from default
69      - fix index bug nobcs in ctrl_init
70      - fix dummy fields filen in ctrl_pack
71      - add dummy weights for obcs
72    o lsopt: comment out fort.94 output
73    o optim:
74      - remove unnecessary header files
75      - adjusted namelists
76      - add xerbla.F to Makefile
77    o exf:
78      - multiple modifications of exf_check_range
79      - unit change in exf_init_runoff from [m/year] to [m/s]
80    o mdsio:
81      - i/o-vector change debugLevel from debLevA to debLevB
82    
83    checkpoint56b_post
84    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
85      is called from DO_THE_MODEL_IO
86      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
87      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
88      - clean up PTRACERS_WRITE_TIMEAVE a little
89    o add another verification experiment that tests both the cfc-pkg and
90      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
91      reactive tendencies treated inline with regular timestepping
92    o testreport previously did a lousy job of comparing small numbers, so
93      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
94      implemented in the little c-progam tmp_cmpnum.c which is embedded in
95      testreport.
96    o ptracers_monitor: bug fix for MPI
97    
98    checkpoint56a_post
99    o GCHEM: finish reorganizating the package
100      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
101        (introduces another 3D-array for each passive tracer, but only if
102        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
103        gchemTendency is not needed because the timestep is done separately)
104      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
105      - GCHEM is now---more or less cleanly---separate from PTRACERS
106      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
107        so clear to me how that should be done in a general way.
108    o CFC: improve formatting of output in CFC_ATMOS
109    o PTRACERS:
110      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
111        that ALL experiments with ptracers enable can be checked. This makes
112        GCHEM_MONITOR obsolete.
113      - include a runtime parameter PTRACERS_monitorFreq that defaults to
114        monitorFreq
115      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
116    o add PTRACERS (PTR0[1-5]) to testreport output
117    o exf_check_range:
118      * default changed to .TRUE.
119      * will check values for niter0 if debLevA, every timestep if debLevB
120      * STOP in exf_check_range if 'out of range'
121      * range chosen generous to allow for potential extema
122      TBD: a version with stricter range
123           permitted range would be runtime parameters
124    o GMredi:
125      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
126      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
127      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
128    o GCHEM:
129      - move call to GCHEM_FORCING_SEP, so that it is now called before
130        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
131      - introduced a useGCHEM runtime flag and applied it everywhere.
132      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
133        this flag is now only visible within GCHEM-pkg routines.
134      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
135        be replaced by a 3D array that is computed before thermodynamics; for
136        this, the tracer ID iTracer had to be included into the parameter list
137        of ptracers_forcing
138      - set up forward_step to call gchem_forcing, that will replace
139        gchem_forcing_int in ptracers_forcing
140      - cleaning up
141    o small cleaning of exch2: remove files that are also in eesupp/src
142    
143    checkpoint56
144    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
145    o mnc: cleanup "full" files--fixes out-of-memory problem
146    o ECCO-GODAE
147      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
148      * fully merged and updated from SIO code
149        windstress sign change affects
150        - exf_inscal_[u/v]stress
151        - sign of xx_tau[u/v] adjustments
152        - signs in cost_scat
153      * ctrl_get_gen: avoid update of tau[u/v] for first few days
154      * natl_box_adjoint updated and compressed
155      * 2-level checkpoint switch added
156        (tested in EXP. 1 of natl_box_adjoint)
157      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
158    o SVD
159      * first complete, non-hacked version for SVD calculations
160      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
161        performed via direct access files admtlm_vector.it????
162        (via ctrl_[un]pack)
163      * optimcycle is used for ARPACK iteration counter
164        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
165      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
166        and add linear transforms where necessary
167      * controls are initial/final SST, SSS (can be extended; need to check
168        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
169    o mdsio: filename info to both stderr, stdout
170    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
171      from sign change
172    
173    checkpoint55j_post
174    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
175      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
176    o add consistent build directories and .cvsignore files to verification
177    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
178    o make all subroutines 30 or less characters in length for certain older
179      compilers to work (a thorough search only turns up two routines in
180      pkg/ptracers)
181    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
182      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
183    
184    checkpoint55i_post
185    o change arrays for total vertical diffusivity (2.D if explicit,
186      3.D if implicit) ; each ptracer uses its own background value.
187    o added mnc/NetCDF output capability to ocn_compon_interf
188      - added bits to verification/cpl_aim+ocn so that it can run on
189        ITRDA and other clusters without the mpirun "-wd" option
190    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
191      configuration
192    o give MNC the ability to create additional files rather than
193      exceeding a specified file size limit "MNC_MAX_FILESIZE"
194      - the default is just less than 2GB which is a practical limit
195        on many systems
196    o Compute the non-local term using either KPP vertical diffusivity (=default)
197       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
198    
199    checkpoint55h_post
200    o add verification test "vermix"
201    o remove all the *_ioinc flags and replace with the single global
202      outputTypesInclusive flag
203    o allow to set a vertical profile of vertical diffusivity for T & S
204    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
205    o useMNC moved from data.mnc to data.pkg
206    
207    checkpoint55g_post
208    o Renaming carbon AD experiments to comply with testreport conventions
209    o Updating adjoint of Held-Suarez hs94.1x64x5
210    o Fixing directives for non-ECCO forward_step, after ECCO directives
211      have been fixed to avoid recomp. of do_oceanic_phys
212      Works well for global_ocean.90x40x15,
213      but recomp. issue remains for carbon
214    o Updating adjoint output for natl_box_adjoint after
215      pkg/ecco has been modified (see taga c55d_post)
216    
217    checkpoint55f_post
218    o rename to timeave_init_fixed
219    
220    checkpoint55e_post
221    o some delicate re-shuffle of store directives to avoid one
222      extra call of do_oceanic_physics
223      affects ecco_the_main_loop.F, do_oceanic_physics.F
224      checkpoint_lev1_directives.h
225    o NB: this may break global_ocean adjoint temporarily,
226      but it is clear how to fix it. Will do later, need this now.
227    
228    checkpoint55d_post
229    o ECCO specific cost function terms (up-to-date with 1x1 runs)
230    o ecco_cost_weights is modified to 1x1 runs
231    o modifs to allow observations to be read in as
232      single file or yearly files
233    o enable to read exf forcing fields as either
234      single file or yearly files (flag useExfYearlyFields)
235    checkpoint55d_pre
236    
237    o switch between 2-level and 3-level checkpointing
238    o add ability of MNC to write local and "partial" (eg. 2D slices where
239      the full 3D field is never actually stored) arrays to NetCDF files
240      with the correct (that is, the complete multi-dimensional) set of
241      array indicies
242      - used in mom_vecinv() to write the diagFreq output
243      - tested (demonstrated) in verification/aim.5l_cs
244    o further mnc-ification
245      - add verification/lab_sea to the list with mnc setups
246      - fix undefined mnc v-names in cd_code
247      - add kpp to mnc output (both snapshot and timeave)
248    o non-hydrostatic code
249      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
250        in calc_gw.F
251      - defaults to viscAh
252      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
253        friction or Leith) in non-hydrostatic mode, as long as there is
254        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
255    o pkg/cost
256      extend simple cost functions to treat time mean quantities
257      (T,U,V) via cost_accumulate_state from cost_tile
258    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
259        be 2 times larger than the minimum size the advection scheme requires.
260        now get a perfect conservation of salt in advect_cs test-exp (updated)
261    o GGL90 (Gaspar's TKE mixed layer)
262      - add horizontal diffusion of TKE, requires exchanges in
263        do_fields_blocking_exchanges, horizontal diffusivity is zero by
264        default. In OPA there is no horizontal diffusion of TKE but the
265        mixing coefficients are computed from a horizontal average of TKE of
266        6 points or so. I think that diffusion has a little more physical
267        justification.
268      - clean up ggl90_calc in the hope of reducing memory usage (this hope
269        was in vain)
270      - mask tke-variable in ggl90_init
271    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
272    o fix biharmonic diffusion on CS-grid.
273    o more obcs stuff
274      - added obcs_external_fields_load as an alternative to the EXF-pkg option
275        for reading boundary values. This routine is called from
276        obcs_prescribe_read
277      - updated obcs_check
278      - changed sponge layer relaxation parameter units for days to seconds
279      - turned off sponge layer by default
280      - changed argument list of OBCS_CALC to myTime+deltaTclock
281      - fixed about 35 bugs in obcs_external_fields_load
282    
283    checkpoint55c_post
284    o obcs stuff
285      - new runtime flags useOBCSprescribe, useOBCSbalance
286      - re-arranged obcs_calc
287      - moved exf_getobcs to obcs_prescibe_read
288        obcs_prescibe_read is called after ORLANSKI stuff
289        and independent of it (executable can contain all).
290      - updated obcs_check
291      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
292        These may be necessary only if tangential velocities are
293        prescribed at OB, not sure, needs testing.
294    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
295      which simplifies the calls and passes the ifc check-bounds test
296    
297    checkpoint55b_post
298    o add a 2D scalar, Z location, exchange_2 routine.
299    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
300      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
301      affects advect_cs results (for the wrong reason): update output.txt
302    o use a more standard discretization for biharmonic viscosity ;
303     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
304      affects results of dome set-up: update output.txt
305    o fix gad_advection.F (CubedSphere part), back to version 1.23
306    o fix bug in mom_vi_del2uv.F (CubedSphere part).
307    
308    checkpoint55a_post
309    o merged code to
310      * prescribe/read time-dependent open boundaries
311        (works in conjunction with exf, cal)
312      * sponge layer code for open boundaries
313      * each boundary N/S/E/W now has its own CPP option
314        (healthy for the adjoint)
315    
316    checkpoint55
317    o up-to-date adjoint of previous breaks
318      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
319      - global_ocean_ebm: adjoint still needs fix (TLM ok)
320      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
321      - carbon: * remove tr1-related adjoint verification
322                * add ptracer as control variable
323    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
324      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
325    
326    checkpoint54f_post
327    o in verification/carbin/ remove experiment related to
328      ALLOW_PASSIVE_TRACER (array tr1 etc)
329      code_ad/ input_ad/ results_ad
330    
331    o add two new packages
332      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
333        + subject to optimization (memory)
334      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
335        + subject to reordering (many GOTOs in the original code)
336        + so far opps is called for every (i,j) point, and then operates in
337          the vertical; one may want to reorder the scheme in order operate in
338          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
339          fields)
340    o overhaul of IO so that we now have flags for MDSIO and/or MNC
341      - all verification tests compile and run with linux_ia32_g77
342      - defaults are compatible with current input files--nothing
343        should change if you were not previously using MNC
344      - MNC output has been added in numerous places (eg. timeave)
345        but there are still a few writes not yet do-able with MNC
346        (this is in progress)
347      - flags now allow for either/or/both use of MDSIO and MNC and
348        documentation will soon follow
349      - numerous small formatting cleanups for ProTeX
350    o add version info (via BUILD_INFO.h) to MNC and stdout
351    
352    checkpoint54e_post
353    o add two new packages
354      - pp81 (Packanowski and Philander, 1981), Richardson number and
355        stratification dependent mixing
356      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
357      - these scheme operate in a similar manner as KPP (without ghat, of
358        course), however there is only one diffusivity that is used for both
359        temperature and salinity (and passive tracers)ç
360    o add offline package
361    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
362      provided by Stephanie Dutkiewicz
363    o genmake2: add ability to search for C compilers and cleanup test output
364      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
365    
366    checkpoint54d_post
367    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
368    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
369      leading to additional shift by 5 days each year of integration
370       (i.e. leading to considerable offset over the years)
371    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
372    o start with no AB and no initial filtering (staggerTimeStep):
373      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
374    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
375      (external loading & cpl import/export stay in forward_step.F)
376    o update coupling interface to work with new staggerTimeStep
377    o change MDSIO ptracers_pickup.
378    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
379    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
380    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
381    
382    checkpoint54c_post
383    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
384      this affects (truncation error) output.txt of test-exp:
385       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
386    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
387    o change Qnet to always be the net heat flux, (+upward).
388      affects (truncation error) output of natl_box exp.: updated
389    o define the max number of passive tracers in PTRACERS_SIZE.h
390    o start to test mnc routinely in exp0
391    o add sea-ice loading (sIceLoad) as a new forcing field.
392    
393    checkpoint54b_post
394    o add testreport "-j JOBS" option for parallel builds (tested and pretty
395       impressive on Altix and Opteron systems)
396    o diagnostics can now write NetCDF files through the mnc package
397    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
398    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
399    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
400      affects (truncation error) output of lab_sea & natl_box exp.: updated
401    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
402    
403    checkpoint54a_post
404    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
405    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
406    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
407    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
408      + internal_wave (shift in writing cg2d_ini_res)
409    checkpoint54a_pre
410    
411    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
412      - modified verification/lab_sea and natl_box_adjoint accordingly
413    
414    checkpoint54
415    checkpoint53g_post
416    o prepare splitting of thermodynamics: store convect.counter in common block
417    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
418      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
419    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
420    o new parameter "nShapS": allow to treat differently S from T (nShapT)
421    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
422    o restore adjointability
423    
424    checkpoint53f_post
425    o modifications that affect AIM experiment results (update output.txt):
426      - no advection of S at top interface Nr (pkg/generic_advdiff)
427      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
428    o AIM pkg:
429      - include stability function into surf.Flux derivative relative to Tsurf
430      - calculate clear-sky radiation & surface temp. change (for diagnostics)
431    
432    checkpoint53e_post
433    o merged cylindrical coord configuration
434    o added rotating_tank experiment
435    checkpoint53e_pre
436    
437    checkpoint53d_post
438    o faulks upgraded: re-generate output.txt that have changed:
439       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
440    o Added Bryan and Lewis, 1979, vertical diffusivity profile
441    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
442    o added Sadourny discretization of Coriolis
443      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
444      - re-enabled use of omega3 (useAbsVorticity)
445    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
446      vector-invariant equations
447      - note: does *NOT* yet use same variable visc. for no-slip BC's.
448    o recoded the lateral boundary conditions for non-hydrostatic w, this time
449      hopefully without new bugs
450      - still to do: biharmonic friction for non-hydrostatic w
451    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
452    o regenerated output for global_ocean_ebm (using -ieee)
453    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
454      of mom_common/
455      - simple re-arrangement of instructions within computing loop
456    checkpoint53d_pre
457    
458    checkpoint53c_post
459    o new version of coupler for AIM+thSIce and Ocean models
460     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
461     - land: change Evaporation of snow
462     - aim with thSIce: fix bug in snow-precip.
463    o changes to calc_gw.F
464     - bug fix for w^2 term near the bottom boundary
465     - (hopefully) improve the lateral slip boundary condtions for use with
466        partial/looped cells
467      - because the bug fix changes two verification experiments anyway (exp5
468        and plume on slope), change the lateral boundary condition from half slip
469        to the value of no_slip_sides
470    o ebm package wasnt quite up to the parallel task. Fixed that.
471    o Adjoint of EBM package + verification
472      * TLM OK
473      * ADM not sufficient accuracy yet (needs further testing)
474    
475    checkpoint53b_post
476    o Commiting new energy balance model to repository
477      * package is pkg/ebm
478      * verif. is verification/global_ocean_ebm
479      * references are in ebm_driver.F
480    C      * X. Wang, P. Stone and J. Marotzke, 1999:
481    C        Global thermohaline circulation. Part I:
482    C        Sensitivity to atmospheric moisture transport.
483    C        J. Climate 12(1), 71-82
484    C      * X. Wang, P. Stone and J. Marotzke, 1999:
485    C        Global thermohaline circulation. Part II:
486    C        Sensitivity with interactive transport.
487    C        J. Climate 12(1), 83-91
488    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
489    C        Destabilization of the thermohaline circulation
490    C        by atmospheric eddy transports.
491    C        J. Climate 7(12), 1870-1882
492    o Will need long integration testing.
493    checkpoint53b_pre
494    
495    o created pkg/mom_common in preparation for variable viscosity code
496    o renamed and split ini_mnc_io
497    o pkg/land: only liquid water can diffuse or run-off
498    o AIM using land: soil wetness availability account for snow
499    o added printMapIncludesZeros to EEPARMS namelist
500    
501    checkpoint53a_post
502    o restore TAMC compatiility for exf_constants.h
503      (no usage of _d in .h)
504    o Additional storing in KPP in an attempt to fix
505      TAMC problem with adjoint of KPP code.
506      (no success...)
507      Identical code works fine with TAF.
508    o Fixed verification/natl_box_adjoint experiments.
509      Initial conditions for Experiments 4 and 5 are now
510      set to "SEAICE_initialHEFF=0", which is more reasonable,
511      and hence gives results closer to that of Experiment 2.
512      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
513    
514    checkpoint53
515    o stable checkpoint with up to date adjoint
516      TLM tests only run for 1st grdchk at the moment. Its unclear if
517      this is a code problem or a problem with resetting code for g_
518      variables that is being autogenerated wrong.
519      Otherwise:
520       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
521       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
522         are both still in chaos following their security messes.
523    
524    checkpoint52n_post
525    o various build (mostly genmake2) changes including:
526      - ability to build/run more easily within Cygwin and MacOS X
527      - more complicated Makefiles with a stronger dependence on Gnu Make
528    o pkg/seaice modifications
529      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
530        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
531        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
532      - changed proxy for geostrophic velocity and updated
533        verification/lab_sea/results/* accordingly
534      - removed ADI dynamic solver from pkg/seaice
535      - replaced all occurrences of 1/CSTICE or 1/CSUICE
536        they caused a segmentation fault under certain circumstances
537      - removed unused field WATR
538    o bug fix in exf-package:
539      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
540         now reflect that.
541    o small fixes in the cal-package:
542      - set reference date to first of January for the 'model'-calendar
543      - failing of cal_CheckDate in cal_FullDate now actually results in a
544        warning
545    o small modifications in exf-package to increase flexibility:
546      - change climtempfreeze from a constant to a runtime parameter that
547        is specified in data.exf_clim (default = -1.9)
548      - introduce runtime parameter windstressmax (default = 2.0) that is
549        specified in data.exf
550    o fix in pkg/thsice:
551      - update Evap (Tsf changes) to be consistent with Latent heat flux
552      - maintain snow precipitation unchanged (even if Tsf >=0).
553     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
554    
555    checkpoint52m_post
556    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
557      this does not change any of the results, because myIter=0 in swfrac always
558      lead to jwtype=2 (the default anyway), but the call makes little sense
559      as a default
560    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
561    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
562      atmospheric model (AIM) to use it ; add a "slab ocean" component.
563    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
564    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
565    o extending useSingleCpuIO option to work with new exch2 I/O format
566      - old-style, missing-tile I/O is still accessible by defining CPP
567        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
568    o monitor package can write to NetCDF files and/or STDOUT
569    o fix re-definition bug in MNC_GRID_INIT_ALL()
570    o doc/api_reference added
571      - a framework for building an API Reference Manual using all
572        the "protex" comments embedded in the code
573      - see pkg/generic_advdiff, pkg/mnc for examples
574    o MNC:
575      - make myThid the last argument for all subroutines
576      - new default for the grid files: NO halos
577      - add useMNC and other run-time flags
578      - separate per-file-group handling of the unlimited dimension
579      - early initialization of MNC w/ flags read at the eeboot stage
580        and lookup tables set in initialize_fixed
581      - write all MNC output to a freshly-created directory
582    o thermodynamics sea-ice (thsice) is now tested with testreport.
583    o test exp. advect_cs: use the standard cs32 grid ; update output.
584    o Added functionality to grdchk:
585      pick global i,j,k position (or nearest wet) where to perform check.
586    
587    checkpoint52l_post
588    o new land formulation:
589      a) use ground enthalpy as prognostic variable to ensure exact
590         energy conservation.
591      b) account for water temperature and for latent heat of freezing
592         in all processes (rain, run-off, ground storage)
593      c) compute surface and ground temperature implicitly.
594    o aim_v23 modification for new land model:
595      a) Treat separately land / ocean / sea-ice surface fluxes
596         to allow implicit computation of land & sea-ice surface temp.
597      b) add snow precipitation.
598    checkpoint52l_pre
599    
600    o fix problem (when 1 tile is empty) in min/max monitor.
601    o fix bug in timeAve (u,vZetatave in common block)
602    o no restoring terms under ice for pkg/seaice
603    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
604    o bug fix for pkg/seaice pickups
605    o change MNC call locations and add coordinate attributes
606    o mask vorticity at the corner ; affects global_ocean.cs output
607    o fix ini_curvilinear_grid ; test CS experiments with mpi
608    o aim.5l_cs: modify sea-ice fraction input file ; update output
609    o exf: Adding simple range check routine for exf fields after read
610    
611    checkpoint52k_post
612    o removed top-level directory "diags"
613      - we migrated these functions to pkg/timeave a long time ago
614    o fixed bug introduced in pkg/monitor
615    o accuracy ctrlprec = 32 insuffient for gradient checks using
616      averaged fields (I/O via cost_averages)
617      -> use ctrl.h in active_file*.F to control I/O precision.
618    o paramter list of CALL ADTHE_MAIN_LOOP
619    o added initial do_the_model_io to ecco
620    o set all ...Freq to zero after cost_final
621      taveFreq, dumpFreq, pChkptFreq
622    o MAIN and ECCO differentiability restored
623    
624    checkpoint52j_post
625    o fix nchklev in tamc.h for global_ocean...
626    o Bringing flow and store directives up-to-date
627    o Really weird thing!
628      call do_the_model_io from the_main_loop with parameters
629      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
630      TAF places a faulty re-call of initialise_varia
631      after cost_final call which should not be there!
632    checkpoint52j_pre
633    
634    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
635      error messages
636    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
637    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
638      debug output
639    o modfied mdsio_writefield.F to handle non-global files under exch2
640    o update AIM Cubed-Sphere exp (aim.5l_cs):
641      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
642    o update AIM Equatorial Channel exp:
643      use standard aim_v23 pkg and change the SST fields to be more realistic.
644    o globalFile now works with exch2
645    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
646      mon_vort3.F to make exch2 friendly with >1 tile per cube face
647    o limit timeave output for hi-res integrations
648    
649    checkpoint52i_post
650    o removed CPP_EEOPTIONS.h from verification/*/code
651    o updated the tiling for global_ocean_pressure
652    checkpoint52i_pre
653    
654    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
655      the old pkg/aim).
656    
657    checkpoint52h_pre
658    o shortened offending lines in exch2_send_rx?.template
659    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
660    o genmake2: add build & execute test for NetCDF code
661    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
662      old grid files, moved CPP_EEMACROS.h to pkg/exch2
663    o added useSingleCPUIO flag to monitor.F and mon_out.F
664    o added temporary hack for sea-ice dynamics on the cube:
665      metric terms are ignored and it is assumed that
666      there is no sea-ice on cube faces 1, 2, 4, and 5.
667    
668    checkpoint52f_post
669    o added exch2 cube routines to pkg/exch2
670    o modified hs94.cs-32x32x5 to use it
671    o added new grid files to hs94.cs-32x32x5
672    checkpoint52f_pre
673    
674    checkpoint52e_post
675    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
676      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
677    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
678      to work with implicit vertical advection and AB ;
679    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
680    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
681     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
682    checkpoint52e_pre
683    
684    o fix bug in impldiff when Nr=1 or Nr=2.
685    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
686    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
687    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
688      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
689    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
690    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
691    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
692    
693    checkpoint52d_post
694    o re-tiled many expts to allow comparison in multi-processor mode
695      - updated output accordingly
696      - changed hs94.128x64x5 to use intial T from file rather than use the
697        random number generator
698    o add infrastructure in model routines for fizhi and gridalt packages
699    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
700    o changes to permit hi-res, cubed-sphere, configuration
701      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
702      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
703      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
704        of surface winds for the cube
705      (A verification experiment, based on global_ocean.cs32x15, but with
706       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
707       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
708       complete with example surface forcing files and matlab scripts to look
709       at the output and compare it with that of global_ocean.cs32x15.)
710    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
711       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
712       to conform to the common rule.
713    o check-in the first version of the coupler + interfaces for multi-components
714       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
715       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
716       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
717       - ocean and atmos. share the same horizontal grid (no interpolation).
718       - exchanges between component and coupler is done in forward_step
719    o new verification experiment, cpl_aim+ocn:
720       coupled ocean - AIM atmosphere on cs32 grid.
721    
722    checkpoint52d_pre
723    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
724    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
725    
726    checkpoint52c_post
727    o Fixing OPTIONS files for use of exf:
728      - ALLOW_ECCO not needed
729      - ECCO_CPPOPTIONS.h should not be included from
730        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
731        as has been the case in the past
732      - All cal/exf related options are currently set in
733        single header file. Should remain so until we
734        agree on a consistent new policy.
735    o Removed all CPP options for cal package.
736      cal has no more CPP options.
737    o modified STOREs in GAD_ADVECTION
738    o corrected key comp. for passkey
739    
740    checkpoint52b_post
741    o new version: "thsice" of thermodynamic sea-ice pkg:
742     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
743     - modify fluxes but do not change theta directly;
744     - light cleaning of bulk_force pkg (still needed with thsice).
745     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
746       + output_thsice.txt to test thsice & bulk_force pkgs.
747    o put back grid & coriolis monitor output.
748    checkpoint52b_pre
749    
750    o call "do_the_model_io" at the beginning (=> dump initial state)
751    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
752    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
753      (need info on NUMBER_OF_PTRACERS)
754    o missing PTRACERS headers in some routines
755    o default tamc.h in pkg/autodiff supposed to crash
756      to ensure proper customization
757    
758    checkpoint52a_post
759    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
760      - moved surfaceTendencyTice from pkg/seaice to main code
761      - subroutine FREEZE_SURFACE now limits only surface temperature
762        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
763        => new output.txt for global_ocean.cs32x15 & global_with_exf
764      - keep the old version of FREEZE for backward compatibility;
765        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
766      - corresponding modifs for TAF directives
767    o added surface flux output variables to TIMEAVE_STATVARS
768    o time-averaged output for pkg/ptracers
769    o fix problem with ECCO-related divided adjoint
770      snapshot file was missing some ad-variables,
771      but no warning issued by TAF
772    
773    checkpoint52a_pre
774    o some bug fixes for #undef REAL4_IS_SLOW
775    
776    checkpoint52 = ecco_c52_e35
777    o after testing adjoints of checkpoint51u_post
778    
779    checkpoint51u_post
780    o this is the post-merge tag of the ecco-branch
781      (needs another clean checkout and re-testing)
782    o various natl_box_adjoint configs and results
783      but no input fields
784    o obcs adjoint not yet merged!
785    o adding ECCO global 1x1 and 2x2 degree configs
786    o updated/extended some store directives for seaice
787    o pkg/ecco now containes ecco-specific part of cost function
788    o top level routines the_main_loop, forward_step
789      supersede those in model/src/
790      previous input data.cost now in data.ecco
791      (new namelist ecco_cost_nml)
792    o in ctrl/ cleaned some cross-dependencies and updated CPP options
793    
794    checkpoint51t_post
795    o this is the pre-merge tag of the ecco-branch
796    
797    checkpoint51s_post
798    o cleanup: removed various obsolete #define-s
799    o pkg/grdchk
800      - renamed 'ph-grd 3' to 'grad-res'
801      - merged from ecco-branch
802        (remaining bug fixes for obcs gradient checks)
803      - additional high-precision output for testreport
804        (grep for 'precision_grdchk_result')
805    
806    checkpoint51r_post
807    o cleaned up or removed CPP_OPTIONS.h files
808    o updated results for some of the tests to reflect the new
809      optfiles (-ieee: -O0 instead of -O3)
810    
811    checkpoint51q_post
812    o cd_code:
813      - moved cd_scheme.F -> cd_code_scheme.F
814      - separate read_checkpoint from cd_code_ini_vars.F
815      - separated cd_code part from write_checkpoint
816      - updated AD_SOURCE, generated .flow
817      - added CD_CODE_VARS.h to the_main_loop
818      - Moving cd_code specific store dir.s to pkg/cd_code
819    o ctrl package totally restructured
820      - pack/unpack now optional and decoupled from
821        xx_/adxx_ I/O
822      - ctrl_pack/unpack cleaned
823        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
824      - confined inclusion of AD_CONFIG.h to where necessary.
825    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
826    
827    checkpoint51p_post
828    o create initial cd_code package
829      - WARNING: the initialization of fields within packages
830        is broken because INI_FIELDS (where READ_CHECKPOINT is
831        called) is called *before* PACKAGES_INIT_VARIABLES.
832        This seems to be backwards since
833        1) its important to initially zero the entire field including
834           the "halo" region
835        2) zeroing needs to be done *before* reading pickup info
836           and the pickup call might or might not happen in any
837           particular run
838      - this needs an overhaul for R2
839    o cleanup verification/*/code/GMREDI_OPTIONS.h
840    o cleanup testreport
841    
842    checkpoint51o_post
843    o bringing AD-related verif's up to date with genmake2
844      - carbon/
845      - global_ocean.90x40x15/
846      - hs.94.1x64x5/
847      - (front_relax/ )
848    o (more) consistent directory structure for AD-related verif.'s
849    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
850    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
851    o bug fix in find_alpha.F for MDJWF:
852      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
853        change rho -> rho-rhoConst
854      - replace call find_rho to find_rhonum
855    o initialisation of rFlx extended to full array (required by TAF)
856      and shifted to thermodynamics
857    o removed PTRACERS.h in ptracers routine
858    o added surfacetendencyPtr to S/R parameter list pracers_forcing
859    o Correcting initialisations for fVerU, fVerV.
860    o helping TAF to recognize dependency on kUp for
861      fVerU, fVerV
862    o Replacing delZ by delR in pkg/ctrl/
863    checkpoint51o_pre
864    
865    o undid all of cp51 pending some cleanups and discussion
866    o added the [#include "AD_CONFIG.h"] statement to all files that need
867       it for adjoint/tl #defines
868     o re-worked the build logic in genmake2 to support AD_CONFIG.h
869     o removed tools/genmake since it no longer works
870    
871    checkpoint51n_post
872    o modifications to make FREEZE flux visible to pkg/kpp
873      - moved surfaceTendencyTice from pkg/seaice to main code
874      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
875      - subroutine FREEZE now limits only surface temperature
876        (this means new output.txt for global_ocean.90x40x15,
877         global_ocean.cs32x15, and global_with_exf)
878    o added surface flux output variables to TIMEAVE_STATVARS
879    
880    checkpoint51n_pre
881    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
882    o added [#include "AD_CONFIG.h"] to all files that use the following
883      defines:
884      - ALLOW_ADJOINT_RUN
885      - ALLOW_TANGENTLINEAR_RUN
886      - ALLOW_ECCO_OPTIMIZATION
887    
888    checkpoint51m_post
889    o incorporating changes to get TAMC/TAF working in genmake2
890      - added new TAMC/TAF targets to the Makefile
891      - various cleanups related to package handling
892      - these changes should have no impact on the forward model
893    
894    checkpoint51l_post
895    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
896     - faster algorithm for cal_addtime.F
897     - higher precision arithmetic, where needed
898     - pkg/exf *startdate variables changed from calendar date to
899       model integration time
900    
901    checkpoint51l_pre
902    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
903    o enable to apply restoring on S & T only in a latitude band.
904    o update output (external_forcing_surf modif. change truncation errors)
905       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
906    
907    checkpoint51k_post
908    o change default to: useNHMTerms=.FALSE.
909     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
910       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
911     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
912        exp1, ideal_2D_oce
913     - change data file of oceanic exp (leave the results unchanged for now)
914       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
915    o set gravitySign automatically according to the vertical coordinate used
916      (and change sign: back to "logical" value: +1 when R increases downward)
917    o added an include barrier to the default CPP_OPTIONS.h and
918      removed the #include "PACKAGES_CONFIG.h" from it
919    o fix a bug in mom_fluxform (from chk51j_post)
920    
921    checkpoint51j_post
922    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
923    o adjusted some flow directives (dynamics, thermodynamics)
924    o added cubed-sphere case to test cost function
925    o heckpoint_lev?_directives.h now include
926      pkg-specific directives, whenever those are enabled.
927    o Moving pkg-specific flow directives to corresponding pkg
928      Moving pkg-specific differentiation list to corresponding pkg
929      Moving pkg-specific checkpoint-lev storing to corresponding pkg
930      ---> conventions are
931           - pkg_ad.flow
932           - pkg_ad_diff.list
933           - pkg_ad_check_lev?_dir.h
934    
935    checkpoint51i_post
936    o merge of the branch-genmake2
937      - knowingly breaks the older genmake
938      - automatic generation of all ALLOW_${PKG_NAME} defines
939      - new testreport supersedes older testscript
940    o large number of package inclusion and header cleanups
941    checkpoint51i_pre
942    
943    o new output for adjoin of global ocean vector invariant
944    o fix for checkpoint of thermodynamic seaice and bulk_force
945    o Steph gchem various cleanups
946    
947    checkpoint 51h_pre
948    o fixed some single quotes
949    o modify gchem pkg to be more versatile
950    o modifications to clean up dic pkg
951    o add pkg/cfc
952    
953    checkpoint51g_post
954    o provide links for ARPACK and ADM*TLM
955    o start removing verification/vero/
956    o update AD-related stuff
957      (in particular some IF-statements in model/src/ routines)
958    o adding to verification/global_ocean.90x40x15/ adjoint of
959      vector invariant setup
960    
961    checkpoint51f_post
962    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
963    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
964      of tracer Green's fucntions for ocean inversion project.
965    
966    checkpoint51f_pre
967    o Added on-the-fly spatial interpolation capability
968        "USE_EXF_INTERPOLATION" to pkg/exf.
969      - This is a temporary Cartesian-grid hack until
970        the super-duper ESMF coupler becomes available.
971      - See verification/global_with_exf/README for usage example.
972      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
973        flags and modified pkg/seaice accordingly.
974    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
975        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
976        non-local transport term.
977    
978    checkpoint51e_post
979    o pkg/mom_vecinv:
980      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
981      - add time-ave diagnostic of vorticity advection.
982    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
983    o atmospheric geopotential: - include water vapor effect;
984                                - use p^kappa in p* scaling.
985    o land pkg: read initial state from files.
986    o AIM : add stratospheric drag in the upper level
987    
988    checkpoint51d_post
989    o change function ILNBLNK (=> last non-blank char.) to return zero
990      (instead of the string length) when the string. char is empty
991    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
992    o modif's to restore TAMC compatibility
993      - avoid "_d" constructs in PARAMETER declarations
994      - avoid interrupting lines by comment lines
995    o Use cluster local disks for purely local I/O
996      vs. globally visible disks needed for ctrl stuff
997      (merged from ecco-branch)
998      - new active_file_loc... and mdsio_..._loc routines
999      - affected packages: autodiff, ctrl, grdchk, mdsio
1000    
1001    checkpoint51c_post
1002    o introducing integer flag debugLevel
1003      - debLevZero: suppress all output
1004      - debLevA: standard
1005      - debLevB: equivalent to current debugMode=.TRUE.
1006    o introducing pathname variable mdsioLocalDir for mdsio
1007      that can be specified at runtime
1008      (relevant for cluster I/O to local disk)
1009    `
1010    >>>checkpoint51b_post
1011    adjoint of ptracers
1012    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1013    o extended state in checkpoint_lev?, etc.
1014    o alternative ctrl/cost with tr1 or ptracer
1015    o new comlev1_bibj_ptracers
1016    o new ptracers.flow
1017    o made ptracers_forcing same as external_forcing_s
1018    o added verification for adjoint with ptracers
1019      - adm. grdchk fail so far
1020      - tlm. grdchk OK
1021      - checked tapelev/comlev recomputations: OK
1022    <<<checkpoint51b_pre
1023    
1024    checkpoint51a_post
1025    o added code for biogeochemistry package
1026      - new pkgs: dic, gchem
1027      - new subroutine in ptracers
1028    o modify code for biogeo packages
1029      - in model/src and pkg/ptracers
1030    
1031    checkpoint51
1032    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1033      - autodiff, ctrl, exf, grdchk, seaice
1034      kept separate packages
1035      - cost, ecco, obcs
1036    o updating verification/internal_wave, verification/lab_sea
1037      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1038    
1039    checkpoint50i_post
1040    o Preparing next differentiable checkpoint and sync
1041      of MAIN vs. ecco-branch
1042      - 1st step: this one is differentiable
1043      - 2nd step: next(! not this) checkpoint will have updated packages
1044                  from ecco-branch)
1045    
1046    checkpoint50h_post
1047    o new package "land": provide surface BC for AIM.
1048    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1049    o AIM: use true log-P extrapolation for near surface temp (= as in
1050        F.Molteni paper) ; update aim.5l_cs output.
1051    o New variable in PARM03 for more flexible pickups
1052    o somewhat cleaned package initialisation sequence for
1053      ctrl/ cost/ ecco/ in packages_... routines
1054    
1055    checkpoint50g_post
1056    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1057      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1058      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1059        made the default because of faster convergence than ADI
1060    
1061    checkpoint50f_post
1062    o exf totally restructured
1063      - replaced all exf_set_ routines by one generic exf_set_gen.F
1064        and made sure it's still differentiable
1065      - split exf_getffields.F into new exf_bulkformulae.F
1066      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1067      - updated adjoint/makefile and relevant verif. accordingly
1068    
1069    checkpoint50f_pre
1070     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1071          + change Evap over land. (update aim.5l_cs output)
1072     o added missing .cvsignores and made uniform across expts
1073     o changed configuration of tidal_basin_2d expt
1074     o added pkg/debug functions for tracing code in fatal crashes
1075     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1076     o new fn in pkg/monitor to stop model if solution grows too big
1077     o removed lots of single quotes from comments
1078    
1079    checkpoint50e_post
1080    o make KPP work with PTRACERS
1081     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1082       nearly a copy of kpp_transport_s
1083     - there is no analogue to SurfaceTendencyS, so I have to use
1084       gPtr(of the surface layer) instead
1085    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1086    checkpoint50e_pre
1087    
1088    checkpoint50d_post
1089    o change kpp output from multiple-record state files to single-record state
1090      files analogous to write_state.F
1091    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1092      analogous to the cg2d-related output.
1093    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1094      so that writing to internal file fn (with length 512) fails.
1095    checkpoint50d_pre
1096    
1097    checkpoint50c_post
1098    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1099    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1100    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1101    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1102    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1103    
1104    checkpoint50c_pre
1105    Merging from release1_p13:
1106    o bug fix for pkg/seaice dynamic solver
1107    o Added SEAICE_initialHEFF to pkg/seaice
1108    
1109    checkpoint50b_post
1110    o store u*,v* in gU,V instead of in guNm1,gvNm1
1111    o in order to put the momForcing out of the Adams-Bashforth:
1112      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1113      to timestep.F
1114    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1115    o re-generate output for highly sensitive test-exp:
1116       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1117    
1118    checkpoint50b_pre
1119    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1120    o corrected CPP option mismatch in exf_Bulk... functions for case
1121      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1122    
1123    checkpoint50a_post
1124    o Bug fix for merging between c50 and KPP.
1125      ikey was passed from thermodynamics to kpp_calc via
1126      common block rather than being recomputed in kpp_calc,
1127      in contradiction with new key itdkey.
1128      New key ikppkey created, and tamc.h headers updated.
1129    
1130    checkpoint50
1131    - 2nd step of merge with ecco-branch:
1132      merge changes in ecco-branch back into main trunk
1133    - bug fix in find_alpha
1134    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1135    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1136    - merged some sliced AD support routines
1137    
1138    checkpoint49
1139    merged from ecco-branch:
1140    o exf:
1141      - Enable initialisation of forcing fields to constant
1142        (runtime) values.
1143      - in exf_getffields.F
1144        Reduce i-/j-loop to interior domain, discarding overlaps.
1145        That also fixes wrong TAF-key computations for key_1, key_2
1146        with bulf formulae.
1147      - exf_init.F modify #ifdef for exf_init_evap
1148      - exf_getffieldrec.F, ctrl_getrec.F
1149        The following INT-usages are not safe:
1150          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1151          fldcount = int(fldsecs/fldperiod) + 1
1152        and were modified.
1153    o autodiff: checkpoint_lev...
1154      - updated storing for bulk formulae (some arrays were missing)
1155      - added state for seaice package
1156      - synchronized with main branch
1157    o DIVA:
1158      Modif.s in
1159      - the_main_loop.F
1160      - the_model_main.F
1161      and added cost_final_restore.F cost_final_store.F
1162      o With these changes, it is possible to fully separate
1163        the first forward run to compute the cost function (mdthe_main_loop)
1164        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1165        into separate model executions.
1166        This enables better tuning of DIVA to given queue sizes.
1167      o Loss of cost function value in consecutive DIVA runs is
1168        fixed by storing to 'costfinal' file.
1169      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1170        beginning/end of adjoint integration is accounted for.
1171      The current changes apply to TAF-1.4.26.
1172      TAF has one remaining bug, requiring one manual change
1173      (see MITgcm manual).
1174    o cal: synchronized between MAIN and ecco-branch
1175    
1176    checkpoint48i_post
1177    o Changes to restore differentiability of code w.r.t. previous tag
1178      (mostly adding new routines to make list and replacing
1179      pressure by totPhiHyd).
1180    o Updated and merged grdchk package
1181      - has both ADM and TLM checks
1182      - works for single- and multi-proc.
1183      - output cleaned
1184      - worked successfully for parallel DIVA
1185    o genmake:
1186      - Adding -platform=SP4
1187      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1188    o Modif. for DIVA:
1189      ctrl_unpack should not be called in intermediate DIVA interval.
1190      (similar thing would apply for active files such as
1191      tbar, sbar, psbar, which should not be reinitialised;
1192      only relevant for ecco-branch)
1193    
1194    checkpoint48h_post
1195    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1196    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1197    o Added SEAICE_initialHEFF to pkg/seaice
1198    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1199    
1200    checkpoint48g_post
1201    --- EOS:
1202    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1203      store total Potential in totPhyHyd for diagnostics & EOS.
1204    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1205    --- Pressure/geopotential gradient:
1206    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1207    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1208      ( changes results of global_ocean_pressure )
1209    o NLFS + z-coord.: add eta*Rho' contribution.
1210    o accurate phiHyd when using interface-W at the middle between 2 centers
1211     ( changes results of ideal_2D_oce )
1212    o includes r* 2nd term in potential gradient.
1213    
1214    checkpoint48f_post
1215    Merging from release1_p12:
1216    o Modifications for using pkg/exf with pkg/seaice
1217      - improved description of the various forcing configurations
1218      - added basic radiation bulk formulae to pkg/exf
1219      - units/sign fix for evap computation in exf_getffields.F
1220      - updated verification/global_with_exf/results/output.txt
1221    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1222      (SBO) core products, including oceanic mass, center-of-mass,
1223      angular, and bottom pressure (see pkg/sbo/README.sbo).
1224    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1225      to avoid negative values in shallow regions.
1226      - updated verification/natl_box/results/output.txt
1227      - updated verification/lab_sea/results/output.txt
1228    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1229    o Added useSingleCpuIO option (see PARAMS.h).
1230    o Updated useSingleCpuIO option in mdsio_writefield.F to
1231      work with multi-field files, e.g., for single-file pickup.
1232    o pkg/seaice:
1233      - bug fix in growth.F: QNET for no shortwave case
1234      - added HeffFile for specifying initial sea-ice thickness
1235      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1236    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1237      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1238    o pkg/seaice:
1239      - adjoint-friendly modifications
1240      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1241    
1242    checkpoint48e_post
1243    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1244    o dynamics: change definition of computational domain & adapt mom_fluxform
1245      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1246    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1247        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1248        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1249        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1250        inverted_barometer solid-body.cs-32x32x1
1251      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1252    
1253    checkpoint48d_post
1254    o in preparation for r*:
1255     a) use pre-computed gradient of hydrostatic potential:
1256        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1257     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1258        => affects results of glob_oce_pressure (different truncation error)  
1259      update output.txt of ideal_2D_oce & global_ocean_pressure
1260    
1261    checkpoint48d_pre
1262    o in preparation for r*:
1263      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1264      pass the 2 comp. of the grad. as arguments to momentum S/R.
1265      but for the moment, only used if it does not change the results.
1266    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1267    
1268    checkpoint48c_post
1269    Modifications in treatment of initial flux forcing controls
1270    to avoid extra storing of flux fields.
1271    
1272    checkpoint48c_pre
1273    o Added tidal_basin_2d experiment (currently 1D!)
1274    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1275    
1276    checkpoint48b_post
1277    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1278     (modification to pressure gradient not yet implemented)
1279    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1280      (for U & V) that are used for vertical advection of momentum.
1281    
1282    checkpoint48a_post
1283    o In preparation for r*, use temp. array to compute vertical transport
1284       in flux-form momentum pkg. => change results of few test-exp.
1285      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1286                        lab_sea, natl_box & plume_on_slope
1287    
1288    checkpoint48
1289    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1290    
1291    checkpoint47j_post
1292    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1293    o moved adexch from forward_step to addummy_in_stepping
1294    o added exch in ctrl_map_...
1295    o aveFreq.=0. at end of cost_final to avoid overwrite in
1296      reverse checkpointing loop
1297    o Yet more changes in gmredi:
1298      * adgmredi_calc_tensor
1299        avoiding all recomputation of gmredi_slope_limit
1300      * adgmredi_x/y/rtransport
1301        added flag for excessive storing to avoid recomp. of
1302        u/v/rtans, dTdx/y/z
1303        -> this is not really necessary and very memory-consuming
1304      * adgmredi_slope_psi:
1305        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1306      * gmredi_slope_limit
1307        re-activated full calculation of taperfct for case 'ac02'
1308    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1309    
1310    checkpoint47i_post
1311    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1312    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1313      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1314    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1315    o gmredi: fix few bugs.
1316    
1317    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1318    This will be a good checkpoint to plug into the ecco-branch.
1319    o few modif.'s to get latest version adjointed
1320      (mainly kick out code in ini_linear_phisurf)
1321    o modif's to run adjoint with exactConserv
1322    o case GM_BOLUS_ADVEC should be cleaned
1323      S/R gmredi_slope_psi should be cleaned
1324    o verification/carbon now has exactConserv=.TRUE.
1325    
1326    checkpoint47g_post
1327    o time-average AIM output: becomes independent from statvars time-average
1328      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1329    o After TAF bug fix:
1330      Tested adjoint of gmredi package.
1331      Tests were done with checkpoint47 rather than with latest
1332      checkpoint47f_post since the latter is broken for the adjoint
1333      verification/carbon/ contains both ADM and TLM gradient checks.
1334    Here they are, before they get changed/lost/stolen.
1335    Mostly modif.'s to fix numerical sensitivities.
1336    Gradient checks OK for
1337    - GM_taper_scheme:
1338      * clipping
1339      * ac02
1340      * linear
1341      * glw91
1342      * dm95
1343      * ldd97
1344    - GMREDI_OPTIONS:
1345      * GM_VISBECK_VARIABLE_K
1346      * GM_NON_UNITY_DIAGONAL
1347      * GM_EXTRA_DIAGONAL
1348      * GM_BOLUS_ADVEC
1349    in conjunction with data.gmredi parameters to be checked in
1350    in a few minutes under verification/carbon/code/
1351    
1352    checkpoint47f_post
1353    Merging from release1_p10:
1354    o modifications for using pkg/exf with pkg/seaice
1355      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1356        and SEAICE_EXTERNAL_FLUXES
1357      - pkg/exf CPP options EXF_READ_EVAP and
1358        EXF_NO_BULK_COMPUTATIONS
1359      - usage examples are Experiments 8 and 9 in
1360        verification/lab_sea/README
1361      - verification/lab_sea default experiment now uses
1362        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1363    
1364    checkpoint47e_post
1365    o created a tag prior to creating a branch
1366    
1367    checkpoint47d_post
1368    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1369      at the bottom boundary had an erroneous half slip boundary condition
1370    o added bottom drag and no slip boundary condition capabilities to
1371      oceanic pressure coordinates code
1372    o added new verification experiment global_ocean_pressure, this experiment is
1373      also described in the tutorial section of the manual
1374    checkpoint47d_pre
1375    
1376    checkpoint47c_post
1377    o Added a verification experiment for a global cubed-sphere ocean run
1378      -  verification/global_ocean.cubed32x32x30
1379      -  uses pkg/therm_seaice and pkg/bulk_forcing
1380    
1381    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1382    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1383      when using P-coordinate; only implemented for atmospheric config.
1384    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1385      NOTES: requires option NONLIN_FRSURF to be "#define".
1386    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1387    
1388    checkpoint47b_post
1389    Merging from release1_p9:
1390    o pkg/seaice
1391      - removed GOTO's and added taf directives
1392      - double precision constants to reduce the g77 (Linux)
1393        to F77 (SGI) differences reported in release1_p8
1394    o tools/genmake
1395      - added SGI options
1396    o verification/testscript
1397      - updated to that of checkpoint47a_post
1398    o verification/global_ocean.90x40x15/input/eedata
1399      - modified for SGI f77 compatibility
1400    o verification/lab_sea
1401      - added description of sea-ice model
1402      - added missing matlab routines
1403      - added test of thermodynamics parallelization
1404    
1405    checkpoint47a_post
1406    o new pkg: aim_v23
1407     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1408       for now, keep the same surface forcing as before.
1409     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1410     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1411     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1412    o add diagnostic of surface correction term in monitor output
1413    
1414    o bulk_force and therm_seaice
1415    - Two packages:  bulk_force (Bulk forcing)
1416      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1417    - Earlier integration from Stephaine Dutkiewicz
1418      and Patrick Heimbach.
1419    - Two ifdef statements for compile time,
1420       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1421    
1422    checkpoint47
1423    differentiable version of checkpoint46n_post
1424    o bug fix in quasihydrostaticterms
1425    o * "clean" adjoint code (in terms of extensive recomputations)
1426        can now be obtained for all GMREDI options (i.e. for
1427        - GM_VISBECK_VARIABLE_K
1428        - GM_NON_UNITY_DIAGONAL
1429        - GM_EXTRA_DIAGONAL
1430        - GM_BOLUS_ADVEC )
1431      * However, wrong gradient check problem remains unsolved.
1432      * New CPP options have been introduced for different
1433        tapering schemes
1434    o external_fields_load now part of differentiation list
1435    o pressure needs multiple storing;
1436      would be nice to have store_pressure at beginning or
1437      end of forward_step, e.g. by having phiHyd global (5-dim.)
1438      (NB: pressure is needed for certain cases in find_rho,
1439      which is also invoked through convective_adjustment).
1440    o recomputations in find_rho for cases
1441     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1442    o #define ATMOSPHERIC_LOADING should be differentiable
1443    o ini_forcing shifted to begining of initialise_varia
1444    o Incorporating QNVS line search routines into MITgcm
1445      (this is separate code, and therefore not under pkg)
1446      lsopt/, optim/
1447    o Updated verification/carbon/
1448      - #define GM_VISBECK_VARIABLE_K
1449      - GM_taper_scheme    = 'ldd97'    
1450    
1451    checkpoint46n_post
1452    Merging from release1_p8:
1453    o verification/natl_box:
1454      updating new external_fields_load routine
1455    o New package: pkg/seaice
1456      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1457      The sea-ice code is based on Hibler (1979-1980).
1458      Two sea-ice dynamic solvers, ADI and LSR, are included.
1459      In addition to computing prognostic sea-ice variables and diagnosing
1460      the forcing/external data fields that drive the ocean model,
1461      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1462      The implied surface heat flux is then stored in variable
1463      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1464      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1465      non-local transport term.  Because this call precedes model
1466      thermodynamics, temperature under sea-ice may not be "exactly" at
1467      the freezing point by the time theta is dumped or time-averaged.
1468      N.B.: fairly large differences in accuracy occur across
1469            different platforms/compilers; comparison between
1470            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1471            generated output gives:
1472       T           S           U           V
1473      C D M    c        m  s        m  s        m  s        m  s
1474      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1475      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1476      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1477    
1478      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1479    o GAD:
1480      - generated new common blocks to account for call of
1481        same gad routines with differing traceridentities
1482        (needed to modify tracerIdentity indices in GAD.h)
1483      - generated separate common blocks for case useCubedSphereExchange
1484        (Department of Futurology)
1485      - parameter lists to gmredi_?transport: added tracerIdentity
1486      - added new key indices to tamc.h
1487    o external_fields_load:
1488      - added this routine to TAF list
1489      - needed to make some common blocks global and additional storing
1490        along the same lines as exf package (checkpoint_lev?_directives.h)
1491    o exf:
1492      updated external forcing package
1493      - bug fixes carried over from ecco-branch
1494        (missing OBCS_OPTIONS.h in two routines)
1495      - enable easy to use "no forcing".
1496      - added exf I/O for atmospheric loading
1497      - added exf I/O for runoff data
1498      - transfered scaling between exf <-> MITgcm to exf namelist
1499    o Adding new verification experiment global_with_exf.
1500      This verification experiment is almost identical to the
1501      global_ocean.90x40x15 experiment, except that it uses
1502      the exf (and cal) package instead of the
1503      external_fields_load routine (cf README file).
1504    
1505    checkpoint46m_post
1506    o modified testscript to return -- when there are no lines of "%MON" output
1507    o added new flag "quasiHydrostatic" for QH mode
1508      and new routine quasihydrostaticterms()
1509    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1510      New routine: mom_u_coriolis_nh()
1511    o fixed sign of non-hydrostatic metric terms in u and v equations.
1512      Depend on correct sign of gravitySign.
1513    o added work.pc* to .cvsignore in aim directories using ifc
1514    o introduced flag for controllin non-hydrostatic metric terms
1515    o removed gravitySign from PARM04
1516    o switched to g77/ifc from pgf77 in aim experiments
1517    
1518    checkpoint46l_post
1519    o made convective adjustment work with pressure coordinates:
1520     - changed the direction of k-loop in convective_adjustment.F for the
1521       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1522     - adjusted the reference pressure k-index in convective_adjustment.F
1523     - adjusted the convection condition in convect.F (in analogy to
1524       calc_ivdc.F)
1525     - convective_adjustment no longer computes anything on the halos
1526     - removed the warnings about negative salinity from find_rho.F and
1527       find_alpha.F; instead the new routine look_for_neg_salinity, called
1528       at the beginning of find_rho, find_alpha, and find_beta, does a
1529       check of the entire slice, if CPP-option
1530       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1531    checkpoint46l_pre
1532    
1533    checkpoint46k_post
1534    o fixed the verification/global_ocean.90x40x15 experiment:
1535     - new bathymetry (the world according to A., JMC, and M.)
1536     - new initial fields and forcing fields (*.bin files)
1537     - new POLY3.COEFFS (for the next release one should switch to a full
1538       equation of state: JMD95P or MDJWF)
1539     - fixed several errors and redundancies in the data file
1540     - experiment uses looped cells
1541     - added matlab directory with diagnostic scripts for plotting of output
1542    
1543    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1544     - read AIM physics parameters from a file (data.aimphys)
1545     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1546    
1547    checkpoint46j_post
1548    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1549    o move wVel computation at the end of the time step, in S/R integr_continuity
1550    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1551    o update timeave pkg for wVel diagnostic.
1552    checkpoint46j_pre
1553    
1554    checkpoint46i_post
1555    o Clean up AIM package (and keep the results unchanged):
1556      include CPP_OPTION and use IMPLICT NONE in all routines ;
1557      declare all the variables _RL ; use _d 0 for all numerical constants.
1558      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1559    
1560    checkpoint46h_post
1561    o cleaned up the use of rhoNil and rhoConst.
1562      - rhoNil should only appear in the LINEAR equation of state, everywhere
1563        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1564        and the dynamical equations are all divided by rhoConst
1565    o introduced new parameter rhoConstFresh, a reference density of fresh
1566      water, to remove the fresh water flux's dependence on rhoNil. The default
1567      value is 999.8 kg/m^3
1568    o cleanup up external_forcing.F and external_forcing_surf.F
1569      - can now be used by both OCEANIC and OCEANICP
1570    checkpoint46h_pre
1571    
1572     Added code to convert surface volume flux (fresh water) into
1573     a mass flux when using P coordinates in the ocean (OCEANICP).
1574     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1575    
1576    checkpoint46g_post
1577    o Include a new diagnostic variable phiHydLow for the ocean model
1578      - in z-coordinates, it is the bottom pressure anomaly
1579      - in p-coordinates, it is the sea surface elevation
1580      - in both cases, these variable have global drift, reflecting the mass
1581        drift in z-coordinates and the volume drift in p-coordinates
1582      - included time averaging for phiHydLow, be aware of the drift!
1583    o depth-dependent computation of Bo_surf for pressure coordinates
1584      in the ocean (buoyancyRelation='OCEANICP')
1585      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1586        Theta, Salinity, and Pressure in the parameter list. This routine is
1587        presently contained in find_rho.F. This routine does not give the
1588        correct density for 'POLY3', which would be a z-dependent reference
1589        density.
1590    o cleaned up find_rho
1591      - removed obsolete 'eqn' from the parameter list.
1592    o added two new verification experiments: gop and goz
1593      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1594    checkpoint46g_pre
1595    
1596    checkpoint46f_post
1597    o Enable tangent linear (forward mode) gradient checks:
1598      - extended active file handling to g_... files
1599      - added TANGENT_SIMULATION to theSimulationMode
1600      - extended grdchk package accordingly
1601    o added tangent linear setup in verification/carbon/code_ftl
1602    o added adjoint setup in verification/front_relax/code_ad
1603    
1604    checkpoint46e_post
1605    o Added new equation of state -> MDJWF
1606      - EOS of McDougall et al., 2002, JAOT, submitted
1607      - caveat: the equation of state is only valid for a smaller (more
1608        realistic?) range of values than JMD95P/Z and UNESCO
1609      - added masks to the calculation of pressure in store_pressure
1610      - added more check values for density in check_eos (ini_eos.F), some of
1611        the old check values are out of the range of the MDJWF-eos, so don't
1612        expect perfect matches for those
1613    checkpoint46e_pre
1614    
1615    checkpoint46d_post
1616    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1617      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1618      case of pressure coordinates. eosType='JMD95Z' in
1619      combination with buoyancyRelation='OCEANICP' now causes an error.
1620    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1621      in find_alpha/beta.
1622    checkpoint46d_pre
1623    
1624    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1625      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1626    
1627    checkpoint46c_post
1628    o Changes necessary for ocean in p-coordinates
1629     -  Added new buoyancy relation = 'OCEANICP'
1630     -  Added new parameters = gravitySign (this used to be contained inside
1631        the factor dRdZ which I added when we first switched to R coordinates).
1632     X GM/Redi is not compatible (yet)
1633     X bottom drag and no-slip need to be debugged.
1634    checkpoint46c_pre
1635    
1636    checkpoint46b_post
1637    o Added new equation of state -> JMD95Z and JMD95P
1638      - EOS of Jackett and McDougall, 1995, JAOT
1639      - moved all EOS parameters into EOS.h
1640      - new routines ini_eos.F, store_pressure.F
1641    o Added UNESCO EOS, but not recommended because it requires
1642      in-situ temperature (see JMD95)
1643    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1644      unesco.f to be used with POLY3
1645    checkpoint46b_pre
1646    
1647    checkpoint46a_post
1648    o Added (atmospheric) pressure loading
1649      - new field in FFIELDS.h, etc...
1650      - new cpp flag ATMOSPHERIC_LOADING
1651    o Changed hFacC to _hFacC in calc_phi_hyd.F
1652    o Added SHORTWAVE_HEATING to some files for consistency
1653    checkpoint46a_pre
1654    
1655    checkpoint46
1656    further merges from release1_p5
1657    o new ctrl package
1658      - adopted from ECCO environment to enable optimization
1659      - added Eliassen Palm fluxes to controls
1660    o added Eliassen Palm flux controls to gradient check package
1661    o cost package
1662      - Compatible with new ctrl package
1663      - added Eliassen Palm cost hooks
1664      - modif's of existing cost functions
1665    o Adjoint-related bug fixes in kpp:
1666      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1667      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1668    o autodiff package
1669      - flow directives:
1670        + new for S/R do_the_model_io
1671        + enhanced for S/R checkpoint
1672        + new gmredi.flow
1673      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1674        disable adcommon.h/g_common.h by default.
1675      - fixed problem for adjoint of global_max
1676    o modified verification/carbon/
1677    o New setup for adjoint of global_ocean
1678    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1679    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1680    o incorporated hooks for sponge layer code (external_forcing.F)
1681    
1682    checkpoint45d_post
1683    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1684    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1685      (affects plume_on_slope "cg2d" output)
1686    o add new parameter deltaTfreesurf for free-surface time stepping
1687    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1688    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1689    o change phiMin in exp1 (to agree with documentation)
1690    o add new flags:
1691     - T,S forcing inside/outside Adams-Bashforth
1692     - turn off temp,salt advection and/or forcing
1693     - for each tracer, define internal flag for multiDimAdvection & A-B
1694    o monitor: change definition of KE to check conservation of Energy
1695    
1696    checkpoint45c_post
1697    o Removed f90 comments ("!")
1698    o Modified initialisations to enable exf package for MITgcm
1699      (without invoking ECCO_PACKAGE).
1700    o modifications to gradient check package (Martin Losch)
1701      - enable centered differences
1702      - modified format of standard output
1703    
1704    checkpoint45b_post
1705    o cleaned exchange calls in cg2d
1706    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1707    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1708      to configure barotropic setup (Martin Losch)
1709    o moved some initialisations within bi,bj loop in dynamics
1710      (TAF flow dependency)
1711    o in initialise_varia, moved call packages_init_variables
1712      before convective_adjustment_init
1713      (corresponding adjustment of TAF tape initialisation).
1714    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1715    
1716    checkpoint45a_post
1717    o compute Rho over the whole domain (extend iMin,jMin indices)
1718    o specific exchange for X-slice domain (case Ny=1)
1719    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1720    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1721    
1722    checkpoint44h_post = checkpoint45
1723    o Fix to restore differentiability:
1724      place at which packages_init_variables is called in
1725      initialise_varia is crucial for reverse control flow.
1726    o modifications in GMRedi to enable stable adjoint
1727      (corresponding modif's in thermodynamics, dynamics)
1728    o added missing hook for sponge layer code in external_forcing
1729    o modified test cost functions
1730    o storing in gad_advection (plus removal of write(0,*)!
1731    o missing headers TR1.h added in convective_adjustment routines
1732    o errorMessageUnit set non-equal zero in eeboot
1733      (conflict on some platforms, e.g. IBM SP3)
1734    o modified carbon verif.
1735    
1736    checkpoint44h_pre
1737    o vertical grid option: allow to put the Interface at the middle between
1738      2 cell-centers ; replace delZ in pkg/kpp by drF.
1739    o GM Advective form: Tracers are advected using the residual transport (=
1740      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1741    
1742  checkpoint44g_post  checkpoint44g_post
1743  o fix surface correction term in multiDimAdvection (affects plume_on_slope  o fix surface correction term in multiDimAdvection (affects plume_on_slope
1744    results) ; ifdef missing in thermodynamics.F    results) ; ifdef missing in thermodynamics.F

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