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revision 1.95 by adcroft, Tue Nov 5 19:14:26 2002 UTC revision 1.421 by jmc, Sun Dec 19 00:59:16 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 move out off EQUIVALENCE all diagnostics that fizhi does not use ;
7      NOTE: change ptracer diagnostics name: use 2 characters to work with
8            more than 9 tracers. Add also diagnostics of advect & diffus flux.
9    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
10      becomes the coordinate variable for the 'T' dimension
11    o add CF-style coordinate variables to MNC
12      - just a first cut:  numbers are meaningless on the cubesphere and
13        missing along the T axis but otherwise it works!
14    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
15    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
16    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
17      this is based directly on what the model compute, so that the content of
18      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
19    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
20    o clean up build options files for SunOS, in particular
21      - remove -traditional from xmakedepend
22      - change -xarch=v9 to -xarch=native for f77
23      - restore use of make (not gmake)
24      - add CC=gcc if using g77
25    o changes per discussion of AM, JMC, & EH3 today:
26      - move redundant "grid" variables out of "state" -- in preparation of
27        creating proper CF-style coordinate variables and in recognition
28        that any/all grid variables can be easily copied (eg. w/NCO) from
29        the grid files into any of the other NetCDF files
30      - *always* output grid variables with MDSIO (this will eventually be
31        changed)
32      - output MNC grid file if useMNC is true
33    o every instance of _END_MASTER() has been found and replaced with
34      _END_MASTER( myThid ) in order to satisfy certain picky Sun
35      preprocessors
36    o re-arrange diagnostics pkg initialisation:
37     - allow each package to extend the available diagnostics list
38     - add some checking and fix small problems (multi-threaded, ...)
39     - new S/R diagnostics_fill (replace fill_diagnostics):
40       look through the short list of active diag. (instead of the long list)
41       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
42    
43    checkpoint57a_post
44    o this set of changes restores TAMC compatibility
45      tested for global_ocean.90x40x15 adjoint on trough
46      (what a pain)
47    
48    checkpoint57a_pre
49    o some modifs in tools/build_options for sunos
50    o call ctrl_pack for ctrl at end for optimcycle=0
51    
52    checkpoint57
53    o add horizontal bi-harmonic viscosity for vertical velocity
54      - new parameter viscA4W (defaults to viscA4)
55      - affects only non-hydrostatic code
56      - to be done: no-slip lateral boundary conditions
57    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
58    o implement Implicit Vertical advection for pTracers
59    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
60      (implemented also for implicit vertical diffusion & advection)
61    o OBCS: extend application of tracer open boundary conditions
62      to a strip beyond the boundary of width Olx/Oly
63    o add call monitor to TAF set of required calls (flow directives)
64      and include in natl_box_adjoint
65    o untangle a few ifdefs related to cost, ctrl, autodiff
66      untangel a few ALLOW_ECCO_OPTIMIZATION
67    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
68      (theta2, salt2 in ecco_cost_weights)
69    
70    checkpoint56c_post
71    o OBCS as control variables
72      - update ctrl_ad_diff.list, obcs_ad_diff.list
73      - remove balance of obcs controls from default
74      - fix index bug nobcs in ctrl_init
75      - fix dummy fields filen in ctrl_pack
76      - add dummy weights for obcs
77    o lsopt: comment out fort.94 output
78    o optim:
79      - remove unnecessary header files
80      - adjusted namelists
81      - add xerbla.F to Makefile
82    o exf:
83      - multiple modifications of exf_check_range
84      - unit change in exf_init_runoff from [m/year] to [m/s]
85    o mdsio:
86      - i/o-vector change debugLevel from debLevA to debLevB
87    
88    checkpoint56b_post
89    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
90      is called from DO_THE_MODEL_IO
91      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
92      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
93      - clean up PTRACERS_WRITE_TIMEAVE a little
94    o add another verification experiment that tests both the cfc-pkg and
95      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
96      reactive tendencies treated inline with regular timestepping
97    o testreport previously did a lousy job of comparing small numbers, so
98      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
99      implemented in the little c-progam tmp_cmpnum.c which is embedded in
100      testreport.
101    o ptracers_monitor: bug fix for MPI
102    
103    checkpoint56a_post
104    o GCHEM: finish reorganizating the package
105      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
106        (introduces another 3D-array for each passive tracer, but only if
107        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
108        gchemTendency is not needed because the timestep is done separately)
109      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
110      - GCHEM is now---more or less cleanly---separate from PTRACERS
111      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
112        so clear to me how that should be done in a general way.
113    o CFC: improve formatting of output in CFC_ATMOS
114    o PTRACERS:
115      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
116        that ALL experiments with ptracers enable can be checked. This makes
117        GCHEM_MONITOR obsolete.
118      - include a runtime parameter PTRACERS_monitorFreq that defaults to
119        monitorFreq
120      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
121    o add PTRACERS (PTR0[1-5]) to testreport output
122    o exf_check_range:
123      * default changed to .TRUE.
124      * will check values for niter0 if debLevA, every timestep if debLevB
125      * STOP in exf_check_range if 'out of range'
126      * range chosen generous to allow for potential extema
127      TBD: a version with stricter range
128           permitted range would be runtime parameters
129    o GMredi:
130      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
131      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
132      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
133    o GCHEM:
134      - move call to GCHEM_FORCING_SEP, so that it is now called before
135        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
136      - introduced a useGCHEM runtime flag and applied it everywhere.
137      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
138        this flag is now only visible within GCHEM-pkg routines.
139      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
140        be replaced by a 3D array that is computed before thermodynamics; for
141        this, the tracer ID iTracer had to be included into the parameter list
142        of ptracers_forcing
143      - set up forward_step to call gchem_forcing, that will replace
144        gchem_forcing_int in ptracers_forcing
145      - cleaning up
146    o small cleaning of exch2: remove files that are also in eesupp/src
147    
148    checkpoint56
149    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
150    o mnc: cleanup "full" files--fixes out-of-memory problem
151    o ECCO-GODAE
152      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
153      * fully merged and updated from SIO code
154        windstress sign change affects
155        - exf_inscal_[u/v]stress
156        - sign of xx_tau[u/v] adjustments
157        - signs in cost_scat
158      * ctrl_get_gen: avoid update of tau[u/v] for first few days
159      * natl_box_adjoint updated and compressed
160      * 2-level checkpoint switch added
161        (tested in EXP. 1 of natl_box_adjoint)
162      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
163    o SVD
164      * first complete, non-hacked version for SVD calculations
165      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
166        performed via direct access files admtlm_vector.it????
167        (via ctrl_[un]pack)
168      * optimcycle is used for ARPACK iteration counter
169        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
170      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
171        and add linear transforms where necessary
172      * controls are initial/final SST, SSS (can be extended; need to check
173        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
174    o mdsio: filename info to both stderr, stdout
175    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
176      from sign change
177    
178    checkpoint55j_post
179    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
180      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
181    o add consistent build directories and .cvsignore files to verification
182    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
183    o make all subroutines 30 or less characters in length for certain older
184      compilers to work (a thorough search only turns up two routines in
185      pkg/ptracers)
186    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
187      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
188    
189    checkpoint55i_post
190    o change arrays for total vertical diffusivity (2.D if explicit,
191      3.D if implicit) ; each ptracer uses its own background value.
192    o added mnc/NetCDF output capability to ocn_compon_interf
193      - added bits to verification/cpl_aim+ocn so that it can run on
194        ITRDA and other clusters without the mpirun "-wd" option
195    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
196      configuration
197    o give MNC the ability to create additional files rather than
198      exceeding a specified file size limit "MNC_MAX_FILESIZE"
199      - the default is just less than 2GB which is a practical limit
200        on many systems
201    o Compute the non-local term using either KPP vertical diffusivity (=default)
202       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
203    
204    checkpoint55h_post
205    o add verification test "vermix"
206    o remove all the *_ioinc flags and replace with the single global
207      outputTypesInclusive flag
208    o allow to set a vertical profile of vertical diffusivity for T & S
209    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
210    o useMNC moved from data.mnc to data.pkg
211    
212    checkpoint55g_post
213    o Renaming carbon AD experiments to comply with testreport conventions
214    o Updating adjoint of Held-Suarez hs94.1x64x5
215    o Fixing directives for non-ECCO forward_step, after ECCO directives
216      have been fixed to avoid recomp. of do_oceanic_phys
217      Works well for global_ocean.90x40x15,
218      but recomp. issue remains for carbon
219    o Updating adjoint output for natl_box_adjoint after
220      pkg/ecco has been modified (see taga c55d_post)
221    
222    checkpoint55f_post
223    o rename to timeave_init_fixed
224    
225    checkpoint55e_post
226    o some delicate re-shuffle of store directives to avoid one
227      extra call of do_oceanic_physics
228      affects ecco_the_main_loop.F, do_oceanic_physics.F
229      checkpoint_lev1_directives.h
230    o NB: this may break global_ocean adjoint temporarily,
231      but it is clear how to fix it. Will do later, need this now.
232    
233    checkpoint55d_post
234    o ECCO specific cost function terms (up-to-date with 1x1 runs)
235    o ecco_cost_weights is modified to 1x1 runs
236    o modifs to allow observations to be read in as
237      single file or yearly files
238    o enable to read exf forcing fields as either
239      single file or yearly files (flag useExfYearlyFields)
240    checkpoint55d_pre
241    
242    o switch between 2-level and 3-level checkpointing
243    o add ability of MNC to write local and "partial" (eg. 2D slices where
244      the full 3D field is never actually stored) arrays to NetCDF files
245      with the correct (that is, the complete multi-dimensional) set of
246      array indicies
247      - used in mom_vecinv() to write the diagFreq output
248      - tested (demonstrated) in verification/aim.5l_cs
249    o further mnc-ification
250      - add verification/lab_sea to the list with mnc setups
251      - fix undefined mnc v-names in cd_code
252      - add kpp to mnc output (both snapshot and timeave)
253    o non-hydrostatic code
254      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
255        in calc_gw.F
256      - defaults to viscAh
257      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
258        friction or Leith) in non-hydrostatic mode, as long as there is
259        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
260    o pkg/cost
261      extend simple cost functions to treat time mean quantities
262      (T,U,V) via cost_accumulate_state from cost_tile
263    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
264        be 2 times larger than the minimum size the advection scheme requires.
265        now get a perfect conservation of salt in advect_cs test-exp (updated)
266    o GGL90 (Gaspar's TKE mixed layer)
267      - add horizontal diffusion of TKE, requires exchanges in
268        do_fields_blocking_exchanges, horizontal diffusivity is zero by
269        default. In OPA there is no horizontal diffusion of TKE but the
270        mixing coefficients are computed from a horizontal average of TKE of
271        6 points or so. I think that diffusion has a little more physical
272        justification.
273      - clean up ggl90_calc in the hope of reducing memory usage (this hope
274        was in vain)
275      - mask tke-variable in ggl90_init
276    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
277    o fix biharmonic diffusion on CS-grid.
278    o more obcs stuff
279      - added obcs_external_fields_load as an alternative to the EXF-pkg option
280        for reading boundary values. This routine is called from
281        obcs_prescribe_read
282      - updated obcs_check
283      - changed sponge layer relaxation parameter units for days to seconds
284      - turned off sponge layer by default
285      - changed argument list of OBCS_CALC to myTime+deltaTclock
286      - fixed about 35 bugs in obcs_external_fields_load
287    
288    checkpoint55c_post
289    o obcs stuff
290      - new runtime flags useOBCSprescribe, useOBCSbalance
291      - re-arranged obcs_calc
292      - moved exf_getobcs to obcs_prescibe_read
293        obcs_prescibe_read is called after ORLANSKI stuff
294        and independent of it (executable can contain all).
295      - updated obcs_check
296      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
297        These may be necessary only if tangential velocities are
298        prescribed at OB, not sure, needs testing.
299    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
300      which simplifies the calls and passes the ifc check-bounds test
301    
302    checkpoint55b_post
303    o add a 2D scalar, Z location, exchange_2 routine.
304    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
305      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
306      affects advect_cs results (for the wrong reason): update output.txt
307    o use a more standard discretization for biharmonic viscosity ;
308     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
309      affects results of dome set-up: update output.txt
310    o fix gad_advection.F (CubedSphere part), back to version 1.23
311    o fix bug in mom_vi_del2uv.F (CubedSphere part).
312    
313    checkpoint55a_post
314    o merged code to
315      * prescribe/read time-dependent open boundaries
316        (works in conjunction with exf, cal)
317      * sponge layer code for open boundaries
318      * each boundary N/S/E/W now has its own CPP option
319        (healthy for the adjoint)
320    
321    checkpoint55
322    o up-to-date adjoint of previous breaks
323      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
324      - global_ocean_ebm: adjoint still needs fix (TLM ok)
325      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
326      - carbon: * remove tr1-related adjoint verification
327                * add ptracer as control variable
328    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
329      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
330    
331    checkpoint54f_post
332    o in verification/carbin/ remove experiment related to
333      ALLOW_PASSIVE_TRACER (array tr1 etc)
334      code_ad/ input_ad/ results_ad
335    
336    o add two new packages
337      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
338        + subject to optimization (memory)
339      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
340        + subject to reordering (many GOTOs in the original code)
341        + so far opps is called for every (i,j) point, and then operates in
342          the vertical; one may want to reorder the scheme in order operate in
343          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
344          fields)
345    o overhaul of IO so that we now have flags for MDSIO and/or MNC
346      - all verification tests compile and run with linux_ia32_g77
347      - defaults are compatible with current input files--nothing
348        should change if you were not previously using MNC
349      - MNC output has been added in numerous places (eg. timeave)
350        but there are still a few writes not yet do-able with MNC
351        (this is in progress)
352      - flags now allow for either/or/both use of MDSIO and MNC and
353        documentation will soon follow
354      - numerous small formatting cleanups for ProTeX
355    o add version info (via BUILD_INFO.h) to MNC and stdout
356    
357    checkpoint54e_post
358    o add two new packages
359      - pp81 (Packanowski and Philander, 1981), Richardson number and
360        stratification dependent mixing
361      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
362      - these scheme operate in a similar manner as KPP (without ghat, of
363        course), however there is only one diffusivity that is used for both
364        temperature and salinity (and passive tracers)ç
365    o add offline package
366    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
367      provided by Stephanie Dutkiewicz
368    o genmake2: add ability to search for C compilers and cleanup test output
369      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
370    
371    checkpoint54d_post
372    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
373    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
374      leading to additional shift by 5 days each year of integration
375       (i.e. leading to considerable offset over the years)
376    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
377    o start with no AB and no initial filtering (staggerTimeStep):
378      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
379    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
380      (external loading & cpl import/export stay in forward_step.F)
381    o update coupling interface to work with new staggerTimeStep
382    o change MDSIO ptracers_pickup.
383    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
384    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
385    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
386    
387    checkpoint54c_post
388    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
389      this affects (truncation error) output.txt of test-exp:
390       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
391    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
392    o change Qnet to always be the net heat flux, (+upward).
393      affects (truncation error) output of natl_box exp.: updated
394    o define the max number of passive tracers in PTRACERS_SIZE.h
395    o start to test mnc routinely in exp0
396    o add sea-ice loading (sIceLoad) as a new forcing field.
397    
398    checkpoint54b_post
399    o add testreport "-j JOBS" option for parallel builds (tested and pretty
400       impressive on Altix and Opteron systems)
401    o diagnostics can now write NetCDF files through the mnc package
402    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
403    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
404    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
405      affects (truncation error) output of lab_sea & natl_box exp.: updated
406    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
407    
408    checkpoint54a_post
409    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
410    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
411    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
412    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
413      + internal_wave (shift in writing cg2d_ini_res)
414    checkpoint54a_pre
415    
416    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
417      - modified verification/lab_sea and natl_box_adjoint accordingly
418    
419    checkpoint54
420    checkpoint53g_post
421    o prepare splitting of thermodynamics: store convect.counter in common block
422    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
423      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
424    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
425    o new parameter "nShapS": allow to treat differently S from T (nShapT)
426    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
427    o restore adjointability
428    
429    checkpoint53f_post
430    o modifications that affect AIM experiment results (update output.txt):
431      - no advection of S at top interface Nr (pkg/generic_advdiff)
432      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
433    o AIM pkg:
434      - include stability function into surf.Flux derivative relative to Tsurf
435      - calculate clear-sky radiation & surface temp. change (for diagnostics)
436    
437    checkpoint53e_post
438    o merged cylindrical coord configuration
439    o added rotating_tank experiment
440    checkpoint53e_pre
441    
442    checkpoint53d_post
443    o faulks upgraded: re-generate output.txt that have changed:
444       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
445    o Added Bryan and Lewis, 1979, vertical diffusivity profile
446    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
447    o added Sadourny discretization of Coriolis
448      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
449      - re-enabled use of omega3 (useAbsVorticity)
450    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
451      vector-invariant equations
452      - note: does *NOT* yet use same variable visc. for no-slip BC's.
453    o recoded the lateral boundary conditions for non-hydrostatic w, this time
454      hopefully without new bugs
455      - still to do: biharmonic friction for non-hydrostatic w
456    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
457    o regenerated output for global_ocean_ebm (using -ieee)
458    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
459      of mom_common/
460      - simple re-arrangement of instructions within computing loop
461    checkpoint53d_pre
462    
463    checkpoint53c_post
464    o new version of coupler for AIM+thSIce and Ocean models
465     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
466     - land: change Evaporation of snow
467     - aim with thSIce: fix bug in snow-precip.
468    o changes to calc_gw.F
469     - bug fix for w^2 term near the bottom boundary
470     - (hopefully) improve the lateral slip boundary condtions for use with
471        partial/looped cells
472      - because the bug fix changes two verification experiments anyway (exp5
473        and plume on slope), change the lateral boundary condition from half slip
474        to the value of no_slip_sides
475    o ebm package wasnt quite up to the parallel task. Fixed that.
476    o Adjoint of EBM package + verification
477      * TLM OK
478      * ADM not sufficient accuracy yet (needs further testing)
479    
480    checkpoint53b_post
481    o Commiting new energy balance model to repository
482      * package is pkg/ebm
483      * verif. is verification/global_ocean_ebm
484      * references are in ebm_driver.F
485    C      * X. Wang, P. Stone and J. Marotzke, 1999:
486    C        Global thermohaline circulation. Part I:
487    C        Sensitivity to atmospheric moisture transport.
488    C        J. Climate 12(1), 71-82
489    C      * X. Wang, P. Stone and J. Marotzke, 1999:
490    C        Global thermohaline circulation. Part II:
491    C        Sensitivity with interactive transport.
492    C        J. Climate 12(1), 83-91
493    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
494    C        Destabilization of the thermohaline circulation
495    C        by atmospheric eddy transports.
496    C        J. Climate 7(12), 1870-1882
497    o Will need long integration testing.
498    checkpoint53b_pre
499    
500    o created pkg/mom_common in preparation for variable viscosity code
501    o renamed and split ini_mnc_io
502    o pkg/land: only liquid water can diffuse or run-off
503    o AIM using land: soil wetness availability account for snow
504    o added printMapIncludesZeros to EEPARMS namelist
505    
506    checkpoint53a_post
507    o restore TAMC compatiility for exf_constants.h
508      (no usage of _d in .h)
509    o Additional storing in KPP in an attempt to fix
510      TAMC problem with adjoint of KPP code.
511      (no success...)
512      Identical code works fine with TAF.
513    o Fixed verification/natl_box_adjoint experiments.
514      Initial conditions for Experiments 4 and 5 are now
515      set to "SEAICE_initialHEFF=0", which is more reasonable,
516      and hence gives results closer to that of Experiment 2.
517      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
518    
519    checkpoint53
520    o stable checkpoint with up to date adjoint
521      TLM tests only run for 1st grdchk at the moment. Its unclear if
522      this is a code problem or a problem with resetting code for g_
523      variables that is being autogenerated wrong.
524      Otherwise:
525       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
526       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
527         are both still in chaos following their security messes.
528    
529    checkpoint52n_post
530    o various build (mostly genmake2) changes including:
531      - ability to build/run more easily within Cygwin and MacOS X
532      - more complicated Makefiles with a stronger dependence on Gnu Make
533    o pkg/seaice modifications
534      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
535        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
536        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
537      - changed proxy for geostrophic velocity and updated
538        verification/lab_sea/results/* accordingly
539      - removed ADI dynamic solver from pkg/seaice
540      - replaced all occurrences of 1/CSTICE or 1/CSUICE
541        they caused a segmentation fault under certain circumstances
542      - removed unused field WATR
543    o bug fix in exf-package:
544      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
545         now reflect that.
546    o small fixes in the cal-package:
547      - set reference date to first of January for the 'model'-calendar
548      - failing of cal_CheckDate in cal_FullDate now actually results in a
549        warning
550    o small modifications in exf-package to increase flexibility:
551      - change climtempfreeze from a constant to a runtime parameter that
552        is specified in data.exf_clim (default = -1.9)
553      - introduce runtime parameter windstressmax (default = 2.0) that is
554        specified in data.exf
555    o fix in pkg/thsice:
556      - update Evap (Tsf changes) to be consistent with Latent heat flux
557      - maintain snow precipitation unchanged (even if Tsf >=0).
558     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
559    
560    checkpoint52m_post
561    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
562      this does not change any of the results, because myIter=0 in swfrac always
563      lead to jwtype=2 (the default anyway), but the call makes little sense
564      as a default
565    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
566    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
567      atmospheric model (AIM) to use it ; add a "slab ocean" component.
568    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
569    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
570    o extending useSingleCpuIO option to work with new exch2 I/O format
571      - old-style, missing-tile I/O is still accessible by defining CPP
572        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
573    o monitor package can write to NetCDF files and/or STDOUT
574    o fix re-definition bug in MNC_GRID_INIT_ALL()
575    o doc/api_reference added
576      - a framework for building an API Reference Manual using all
577        the "protex" comments embedded in the code
578      - see pkg/generic_advdiff, pkg/mnc for examples
579    o MNC:
580      - make myThid the last argument for all subroutines
581      - new default for the grid files: NO halos
582      - add useMNC and other run-time flags
583      - separate per-file-group handling of the unlimited dimension
584      - early initialization of MNC w/ flags read at the eeboot stage
585        and lookup tables set in initialize_fixed
586      - write all MNC output to a freshly-created directory
587    o thermodynamics sea-ice (thsice) is now tested with testreport.
588    o test exp. advect_cs: use the standard cs32 grid ; update output.
589    o Added functionality to grdchk:
590      pick global i,j,k position (or nearest wet) where to perform check.
591    
592    checkpoint52l_post
593    o new land formulation:
594      a) use ground enthalpy as prognostic variable to ensure exact
595         energy conservation.
596      b) account for water temperature and for latent heat of freezing
597         in all processes (rain, run-off, ground storage)
598      c) compute surface and ground temperature implicitly.
599    o aim_v23 modification for new land model:
600      a) Treat separately land / ocean / sea-ice surface fluxes
601         to allow implicit computation of land & sea-ice surface temp.
602      b) add snow precipitation.
603    checkpoint52l_pre
604    
605    o fix problem (when 1 tile is empty) in min/max monitor.
606    o fix bug in timeAve (u,vZetatave in common block)
607    o no restoring terms under ice for pkg/seaice
608    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
609    o bug fix for pkg/seaice pickups
610    o change MNC call locations and add coordinate attributes
611    o mask vorticity at the corner ; affects global_ocean.cs output
612    o fix ini_curvilinear_grid ; test CS experiments with mpi
613    o aim.5l_cs: modify sea-ice fraction input file ; update output
614    o exf: Adding simple range check routine for exf fields after read
615    
616    checkpoint52k_post
617    o removed top-level directory "diags"
618      - we migrated these functions to pkg/timeave a long time ago
619    o fixed bug introduced in pkg/monitor
620    o accuracy ctrlprec = 32 insuffient for gradient checks using
621      averaged fields (I/O via cost_averages)
622      -> use ctrl.h in active_file*.F to control I/O precision.
623    o paramter list of CALL ADTHE_MAIN_LOOP
624    o added initial do_the_model_io to ecco
625    o set all ...Freq to zero after cost_final
626      taveFreq, dumpFreq, pChkptFreq
627    o MAIN and ECCO differentiability restored
628    
629    checkpoint52j_post
630    o fix nchklev in tamc.h for global_ocean...
631    o Bringing flow and store directives up-to-date
632    o Really weird thing!
633      call do_the_model_io from the_main_loop with parameters
634      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
635      TAF places a faulty re-call of initialise_varia
636      after cost_final call which should not be there!
637    checkpoint52j_pre
638    
639    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
640      error messages
641    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
642    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
643      debug output
644    o modfied mdsio_writefield.F to handle non-global files under exch2
645    o update AIM Cubed-Sphere exp (aim.5l_cs):
646      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
647    o update AIM Equatorial Channel exp:
648      use standard aim_v23 pkg and change the SST fields to be more realistic.
649    o globalFile now works with exch2
650    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
651      mon_vort3.F to make exch2 friendly with >1 tile per cube face
652    o limit timeave output for hi-res integrations
653    
654    checkpoint52i_post
655    o removed CPP_EEOPTIONS.h from verification/*/code
656    o updated the tiling for global_ocean_pressure
657    checkpoint52i_pre
658    
659    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
660      the old pkg/aim).
661    
662    checkpoint52h_pre
663    o shortened offending lines in exch2_send_rx?.template
664    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
665    o genmake2: add build & execute test for NetCDF code
666    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
667      old grid files, moved CPP_EEMACROS.h to pkg/exch2
668    o added useSingleCPUIO flag to monitor.F and mon_out.F
669    o added temporary hack for sea-ice dynamics on the cube:
670      metric terms are ignored and it is assumed that
671      there is no sea-ice on cube faces 1, 2, 4, and 5.
672    
673    checkpoint52f_post
674    o added exch2 cube routines to pkg/exch2
675    o modified hs94.cs-32x32x5 to use it
676    o added new grid files to hs94.cs-32x32x5
677    checkpoint52f_pre
678    
679    checkpoint52e_post
680    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
681      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
682    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
683      to work with implicit vertical advection and AB ;
684    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
685    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
686     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
687    checkpoint52e_pre
688    
689    o fix bug in impldiff when Nr=1 or Nr=2.
690    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
691    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
692    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
693      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
694    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
695    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
696    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
697    
698    checkpoint52d_post
699    o re-tiled many expts to allow comparison in multi-processor mode
700      - updated output accordingly
701      - changed hs94.128x64x5 to use intial T from file rather than use the
702        random number generator
703    o add infrastructure in model routines for fizhi and gridalt packages
704    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
705    o changes to permit hi-res, cubed-sphere, configuration
706      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
707      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
708      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
709        of surface winds for the cube
710      (A verification experiment, based on global_ocean.cs32x15, but with
711       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
712       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
713       complete with example surface forcing files and matlab scripts to look
714       at the output and compare it with that of global_ocean.cs32x15.)
715    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
716       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
717       to conform to the common rule.
718    o check-in the first version of the coupler + interfaces for multi-components
719       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
720       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
721       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
722       - ocean and atmos. share the same horizontal grid (no interpolation).
723       - exchanges between component and coupler is done in forward_step
724    o new verification experiment, cpl_aim+ocn:
725       coupled ocean - AIM atmosphere on cs32 grid.
726    
727    checkpoint52d_pre
728    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
729    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
730    
731    checkpoint52c_post
732    o Fixing OPTIONS files for use of exf:
733      - ALLOW_ECCO not needed
734      - ECCO_CPPOPTIONS.h should not be included from
735        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
736        as has been the case in the past
737      - All cal/exf related options are currently set in
738        single header file. Should remain so until we
739        agree on a consistent new policy.
740    o Removed all CPP options for cal package.
741      cal has no more CPP options.
742    o modified STOREs in GAD_ADVECTION
743    o corrected key comp. for passkey
744    
745    checkpoint52b_post
746    o new version: "thsice" of thermodynamic sea-ice pkg:
747     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
748     - modify fluxes but do not change theta directly;
749     - light cleaning of bulk_force pkg (still needed with thsice).
750     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
751       + output_thsice.txt to test thsice & bulk_force pkgs.
752    o put back grid & coriolis monitor output.
753    checkpoint52b_pre
754    
755    o call "do_the_model_io" at the beginning (=> dump initial state)
756    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
757    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
758      (need info on NUMBER_OF_PTRACERS)
759    o missing PTRACERS headers in some routines
760    o default tamc.h in pkg/autodiff supposed to crash
761      to ensure proper customization
762    
763    checkpoint52a_post
764    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
765      - moved surfaceTendencyTice from pkg/seaice to main code
766      - subroutine FREEZE_SURFACE now limits only surface temperature
767        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
768        => new output.txt for global_ocean.cs32x15 & global_with_exf
769      - keep the old version of FREEZE for backward compatibility;
770        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
771      - corresponding modifs for TAF directives
772    o added surface flux output variables to TIMEAVE_STATVARS
773    o time-averaged output for pkg/ptracers
774    o fix problem with ECCO-related divided adjoint
775      snapshot file was missing some ad-variables,
776      but no warning issued by TAF
777    
778    checkpoint52a_pre
779    o some bug fixes for #undef REAL4_IS_SLOW
780    
781    checkpoint52 = ecco_c52_e35
782    o after testing adjoints of checkpoint51u_post
783    
784    checkpoint51u_post
785    o this is the post-merge tag of the ecco-branch
786      (needs another clean checkout and re-testing)
787    o various natl_box_adjoint configs and results
788      but no input fields
789    o obcs adjoint not yet merged!
790    o adding ECCO global 1x1 and 2x2 degree configs
791    o updated/extended some store directives for seaice
792    o pkg/ecco now containes ecco-specific part of cost function
793    o top level routines the_main_loop, forward_step
794      supersede those in model/src/
795      previous input data.cost now in data.ecco
796      (new namelist ecco_cost_nml)
797    o in ctrl/ cleaned some cross-dependencies and updated CPP options
798    
799    checkpoint51t_post
800    o this is the pre-merge tag of the ecco-branch
801    
802    checkpoint51s_post
803    o cleanup: removed various obsolete #define-s
804    o pkg/grdchk
805      - renamed 'ph-grd 3' to 'grad-res'
806      - merged from ecco-branch
807        (remaining bug fixes for obcs gradient checks)
808      - additional high-precision output for testreport
809        (grep for 'precision_grdchk_result')
810    
811    checkpoint51r_post
812    o cleaned up or removed CPP_OPTIONS.h files
813    o updated results for some of the tests to reflect the new
814      optfiles (-ieee: -O0 instead of -O3)
815    
816    checkpoint51q_post
817    o cd_code:
818      - moved cd_scheme.F -> cd_code_scheme.F
819      - separate read_checkpoint from cd_code_ini_vars.F
820      - separated cd_code part from write_checkpoint
821      - updated AD_SOURCE, generated .flow
822      - added CD_CODE_VARS.h to the_main_loop
823      - Moving cd_code specific store dir.s to pkg/cd_code
824    o ctrl package totally restructured
825      - pack/unpack now optional and decoupled from
826        xx_/adxx_ I/O
827      - ctrl_pack/unpack cleaned
828        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
829      - confined inclusion of AD_CONFIG.h to where necessary.
830    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
831    
832    checkpoint51p_post
833    o create initial cd_code package
834      - WARNING: the initialization of fields within packages
835        is broken because INI_FIELDS (where READ_CHECKPOINT is
836        called) is called *before* PACKAGES_INIT_VARIABLES.
837        This seems to be backwards since
838        1) its important to initially zero the entire field including
839           the "halo" region
840        2) zeroing needs to be done *before* reading pickup info
841           and the pickup call might or might not happen in any
842           particular run
843      - this needs an overhaul for R2
844    o cleanup verification/*/code/GMREDI_OPTIONS.h
845    o cleanup testreport
846    
847    checkpoint51o_post
848    o bringing AD-related verif's up to date with genmake2
849      - carbon/
850      - global_ocean.90x40x15/
851      - hs.94.1x64x5/
852      - (front_relax/ )
853    o (more) consistent directory structure for AD-related verif.'s
854    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
855    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
856    o bug fix in find_alpha.F for MDJWF:
857      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
858        change rho -> rho-rhoConst
859      - replace call find_rho to find_rhonum
860    o initialisation of rFlx extended to full array (required by TAF)
861      and shifted to thermodynamics
862    o removed PTRACERS.h in ptracers routine
863    o added surfacetendencyPtr to S/R parameter list pracers_forcing
864    o Correcting initialisations for fVerU, fVerV.
865    o helping TAF to recognize dependency on kUp for
866      fVerU, fVerV
867    o Replacing delZ by delR in pkg/ctrl/
868    checkpoint51o_pre
869    
870    o undid all of cp51 pending some cleanups and discussion
871    o added the [#include "AD_CONFIG.h"] statement to all files that need
872       it for adjoint/tl #defines
873     o re-worked the build logic in genmake2 to support AD_CONFIG.h
874     o removed tools/genmake since it no longer works
875    
876    checkpoint51n_post
877    o modifications to make FREEZE flux visible to pkg/kpp
878      - moved surfaceTendencyTice from pkg/seaice to main code
879      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
880      - subroutine FREEZE now limits only surface temperature
881        (this means new output.txt for global_ocean.90x40x15,
882         global_ocean.cs32x15, and global_with_exf)
883    o added surface flux output variables to TIMEAVE_STATVARS
884    
885    checkpoint51n_pre
886    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
887    o added [#include "AD_CONFIG.h"] to all files that use the following
888      defines:
889      - ALLOW_ADJOINT_RUN
890      - ALLOW_TANGENTLINEAR_RUN
891      - ALLOW_ECCO_OPTIMIZATION
892    
893    checkpoint51m_post
894    o incorporating changes to get TAMC/TAF working in genmake2
895      - added new TAMC/TAF targets to the Makefile
896      - various cleanups related to package handling
897      - these changes should have no impact on the forward model
898    
899    checkpoint51l_post
900    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
901     - faster algorithm for cal_addtime.F
902     - higher precision arithmetic, where needed
903     - pkg/exf *startdate variables changed from calendar date to
904       model integration time
905    
906    checkpoint51l_pre
907    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
908    o enable to apply restoring on S & T only in a latitude band.
909    o update output (external_forcing_surf modif. change truncation errors)
910       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
911    
912    checkpoint51k_post
913    o change default to: useNHMTerms=.FALSE.
914     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
915       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
916     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
917        exp1, ideal_2D_oce
918     - change data file of oceanic exp (leave the results unchanged for now)
919       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
920    o set gravitySign automatically according to the vertical coordinate used
921      (and change sign: back to "logical" value: +1 when R increases downward)
922    o added an include barrier to the default CPP_OPTIONS.h and
923      removed the #include "PACKAGES_CONFIG.h" from it
924    o fix a bug in mom_fluxform (from chk51j_post)
925    
926    checkpoint51j_post
927    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
928    o adjusted some flow directives (dynamics, thermodynamics)
929    o added cubed-sphere case to test cost function
930    o heckpoint_lev?_directives.h now include
931      pkg-specific directives, whenever those are enabled.
932    o Moving pkg-specific flow directives to corresponding pkg
933      Moving pkg-specific differentiation list to corresponding pkg
934      Moving pkg-specific checkpoint-lev storing to corresponding pkg
935      ---> conventions are
936           - pkg_ad.flow
937           - pkg_ad_diff.list
938           - pkg_ad_check_lev?_dir.h
939    
940    checkpoint51i_post
941    o merge of the branch-genmake2
942      - knowingly breaks the older genmake
943      - automatic generation of all ALLOW_${PKG_NAME} defines
944      - new testreport supersedes older testscript
945    o large number of package inclusion and header cleanups
946    checkpoint51i_pre
947    
948    o new output for adjoin of global ocean vector invariant
949    o fix for checkpoint of thermodynamic seaice and bulk_force
950    o Steph gchem various cleanups
951    
952    checkpoint 51h_pre
953    o fixed some single quotes
954    o modify gchem pkg to be more versatile
955    o modifications to clean up dic pkg
956    o add pkg/cfc
957    
958    checkpoint51g_post
959    o provide links for ARPACK and ADM*TLM
960    o start removing verification/vero/
961    o update AD-related stuff
962      (in particular some IF-statements in model/src/ routines)
963    o adding to verification/global_ocean.90x40x15/ adjoint of
964      vector invariant setup
965    
966    checkpoint51f_post
967    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
968    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
969      of tracer Green's fucntions for ocean inversion project.
970    
971    checkpoint51f_pre
972    o Added on-the-fly spatial interpolation capability
973        "USE_EXF_INTERPOLATION" to pkg/exf.
974      - This is a temporary Cartesian-grid hack until
975        the super-duper ESMF coupler becomes available.
976      - See verification/global_with_exf/README for usage example.
977      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
978        flags and modified pkg/seaice accordingly.
979    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
980        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
981        non-local transport term.
982    
983    checkpoint51e_post
984    o pkg/mom_vecinv:
985      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
986      - add time-ave diagnostic of vorticity advection.
987    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
988    o atmospheric geopotential: - include water vapor effect;
989                                - use p^kappa in p* scaling.
990    o land pkg: read initial state from files.
991    o AIM : add stratospheric drag in the upper level
992    
993    checkpoint51d_post
994    o change function ILNBLNK (=> last non-blank char.) to return zero
995      (instead of the string length) when the string. char is empty
996    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
997    o modif's to restore TAMC compatibility
998      - avoid "_d" constructs in PARAMETER declarations
999      - avoid interrupting lines by comment lines
1000    o Use cluster local disks for purely local I/O
1001      vs. globally visible disks needed for ctrl stuff
1002      (merged from ecco-branch)
1003      - new active_file_loc... and mdsio_..._loc routines
1004      - affected packages: autodiff, ctrl, grdchk, mdsio
1005    
1006    checkpoint51c_post
1007    o introducing integer flag debugLevel
1008      - debLevZero: suppress all output
1009      - debLevA: standard
1010      - debLevB: equivalent to current debugMode=.TRUE.
1011    o introducing pathname variable mdsioLocalDir for mdsio
1012      that can be specified at runtime
1013      (relevant for cluster I/O to local disk)
1014    `
1015    >>>checkpoint51b_post
1016    adjoint of ptracers
1017    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1018    o extended state in checkpoint_lev?, etc.
1019    o alternative ctrl/cost with tr1 or ptracer
1020    o new comlev1_bibj_ptracers
1021    o new ptracers.flow
1022    o made ptracers_forcing same as external_forcing_s
1023    o added verification for adjoint with ptracers
1024      - adm. grdchk fail so far
1025      - tlm. grdchk OK
1026      - checked tapelev/comlev recomputations: OK
1027    <<<checkpoint51b_pre
1028    
1029    checkpoint51a_post
1030    o added code for biogeochemistry package
1031      - new pkgs: dic, gchem
1032      - new subroutine in ptracers
1033    o modify code for biogeo packages
1034      - in model/src and pkg/ptracers
1035    
1036    checkpoint51
1037    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1038      - autodiff, ctrl, exf, grdchk, seaice
1039      kept separate packages
1040      - cost, ecco, obcs
1041    o updating verification/internal_wave, verification/lab_sea
1042      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1043    
1044    checkpoint50i_post
1045    o Preparing next differentiable checkpoint and sync
1046      of MAIN vs. ecco-branch
1047      - 1st step: this one is differentiable
1048      - 2nd step: next(! not this) checkpoint will have updated packages
1049                  from ecco-branch)
1050    
1051    checkpoint50h_post
1052    o new package "land": provide surface BC for AIM.
1053    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1054    o AIM: use true log-P extrapolation for near surface temp (= as in
1055        F.Molteni paper) ; update aim.5l_cs output.
1056    o New variable in PARM03 for more flexible pickups
1057    o somewhat cleaned package initialisation sequence for
1058      ctrl/ cost/ ecco/ in packages_... routines
1059    
1060    checkpoint50g_post
1061    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1062      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1063      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1064        made the default because of faster convergence than ADI
1065    
1066    checkpoint50f_post
1067    o exf totally restructured
1068      - replaced all exf_set_ routines by one generic exf_set_gen.F
1069        and made sure it's still differentiable
1070      - split exf_getffields.F into new exf_bulkformulae.F
1071      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1072      - updated adjoint/makefile and relevant verif. accordingly
1073    
1074    checkpoint50f_pre
1075     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1076          + change Evap over land. (update aim.5l_cs output)
1077     o added missing .cvsignores and made uniform across expts
1078     o changed configuration of tidal_basin_2d expt
1079     o added pkg/debug functions for tracing code in fatal crashes
1080     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1081     o new fn in pkg/monitor to stop model if solution grows too big
1082     o removed lots of single quotes from comments
1083    
1084    checkpoint50e_post
1085    o make KPP work with PTRACERS
1086     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1087       nearly a copy of kpp_transport_s
1088     - there is no analogue to SurfaceTendencyS, so I have to use
1089       gPtr(of the surface layer) instead
1090    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1091    checkpoint50e_pre
1092    
1093    checkpoint50d_post
1094    o change kpp output from multiple-record state files to single-record state
1095      files analogous to write_state.F
1096    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1097      analogous to the cg2d-related output.
1098    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1099      so that writing to internal file fn (with length 512) fails.
1100    checkpoint50d_pre
1101    
1102    checkpoint50c_post
1103    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1104    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1105    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1106    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1107    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1108    
1109    checkpoint50c_pre
1110    Merging from release1_p13:
1111    o bug fix for pkg/seaice dynamic solver
1112    o Added SEAICE_initialHEFF to pkg/seaice
1113    
1114    checkpoint50b_post
1115    o store u*,v* in gU,V instead of in guNm1,gvNm1
1116    o in order to put the momForcing out of the Adams-Bashforth:
1117      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1118      to timestep.F
1119    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1120    o re-generate output for highly sensitive test-exp:
1121       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1122    
1123    checkpoint50b_pre
1124    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1125    o corrected CPP option mismatch in exf_Bulk... functions for case
1126      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1127    
1128    checkpoint50a_post
1129    o Bug fix for merging between c50 and KPP.
1130      ikey was passed from thermodynamics to kpp_calc via
1131      common block rather than being recomputed in kpp_calc,
1132      in contradiction with new key itdkey.
1133      New key ikppkey created, and tamc.h headers updated.
1134    
1135    checkpoint50
1136    - 2nd step of merge with ecco-branch:
1137      merge changes in ecco-branch back into main trunk
1138    - bug fix in find_alpha
1139    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1140    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1141    - merged some sliced AD support routines
1142    
1143    checkpoint49
1144    merged from ecco-branch:
1145    o exf:
1146      - Enable initialisation of forcing fields to constant
1147        (runtime) values.
1148      - in exf_getffields.F
1149        Reduce i-/j-loop to interior domain, discarding overlaps.
1150        That also fixes wrong TAF-key computations for key_1, key_2
1151        with bulf formulae.
1152      - exf_init.F modify #ifdef for exf_init_evap
1153      - exf_getffieldrec.F, ctrl_getrec.F
1154        The following INT-usages are not safe:
1155          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1156          fldcount = int(fldsecs/fldperiod) + 1
1157        and were modified.
1158    o autodiff: checkpoint_lev...
1159      - updated storing for bulk formulae (some arrays were missing)
1160      - added state for seaice package
1161      - synchronized with main branch
1162    o DIVA:
1163      Modif.s in
1164      - the_main_loop.F
1165      - the_model_main.F
1166      and added cost_final_restore.F cost_final_store.F
1167      o With these changes, it is possible to fully separate
1168        the first forward run to compute the cost function (mdthe_main_loop)
1169        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1170        into separate model executions.
1171        This enables better tuning of DIVA to given queue sizes.
1172      o Loss of cost function value in consecutive DIVA runs is
1173        fixed by storing to 'costfinal' file.
1174      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1175        beginning/end of adjoint integration is accounted for.
1176      The current changes apply to TAF-1.4.26.
1177      TAF has one remaining bug, requiring one manual change
1178      (see MITgcm manual).
1179    o cal: synchronized between MAIN and ecco-branch
1180    
1181    checkpoint48i_post
1182    o Changes to restore differentiability of code w.r.t. previous tag
1183      (mostly adding new routines to make list and replacing
1184      pressure by totPhiHyd).
1185    o Updated and merged grdchk package
1186      - has both ADM and TLM checks
1187      - works for single- and multi-proc.
1188      - output cleaned
1189      - worked successfully for parallel DIVA
1190    o genmake:
1191      - Adding -platform=SP4
1192      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1193    o Modif. for DIVA:
1194      ctrl_unpack should not be called in intermediate DIVA interval.
1195      (similar thing would apply for active files such as
1196      tbar, sbar, psbar, which should not be reinitialised;
1197      only relevant for ecco-branch)
1198    
1199    checkpoint48h_post
1200    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1201    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1202    o Added SEAICE_initialHEFF to pkg/seaice
1203    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1204    
1205    checkpoint48g_post
1206    --- EOS:
1207    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1208      store total Potential in totPhyHyd for diagnostics & EOS.
1209    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1210    --- Pressure/geopotential gradient:
1211    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1212    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1213      ( changes results of global_ocean_pressure )
1214    o NLFS + z-coord.: add eta*Rho' contribution.
1215    o accurate phiHyd when using interface-W at the middle between 2 centers
1216     ( changes results of ideal_2D_oce )
1217    o includes r* 2nd term in potential gradient.
1218    
1219    checkpoint48f_post
1220    Merging from release1_p12:
1221    o Modifications for using pkg/exf with pkg/seaice
1222      - improved description of the various forcing configurations
1223      - added basic radiation bulk formulae to pkg/exf
1224      - units/sign fix for evap computation in exf_getffields.F
1225      - updated verification/global_with_exf/results/output.txt
1226    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1227      (SBO) core products, including oceanic mass, center-of-mass,
1228      angular, and bottom pressure (see pkg/sbo/README.sbo).
1229    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1230      to avoid negative values in shallow regions.
1231      - updated verification/natl_box/results/output.txt
1232      - updated verification/lab_sea/results/output.txt
1233    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1234    o Added useSingleCpuIO option (see PARAMS.h).
1235    o Updated useSingleCpuIO option in mdsio_writefield.F to
1236      work with multi-field files, e.g., for single-file pickup.
1237    o pkg/seaice:
1238      - bug fix in growth.F: QNET for no shortwave case
1239      - added HeffFile for specifying initial sea-ice thickness
1240      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1241    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1242      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1243    o pkg/seaice:
1244      - adjoint-friendly modifications
1245      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1246    
1247    checkpoint48e_post
1248    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1249    o dynamics: change definition of computational domain & adapt mom_fluxform
1250      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1251    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1252        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1253        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1254        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1255        inverted_barometer solid-body.cs-32x32x1
1256      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1257    
1258    checkpoint48d_post
1259    o in preparation for r*:
1260     a) use pre-computed gradient of hydrostatic potential:
1261        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1262     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1263        => affects results of glob_oce_pressure (different truncation error)  
1264      update output.txt of ideal_2D_oce & global_ocean_pressure
1265    
1266    checkpoint48d_pre
1267    o in preparation for r*:
1268      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1269      pass the 2 comp. of the grad. as arguments to momentum S/R.
1270      but for the moment, only used if it does not change the results.
1271    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1272    
1273    checkpoint48c_post
1274    Modifications in treatment of initial flux forcing controls
1275    to avoid extra storing of flux fields.
1276    
1277    checkpoint48c_pre
1278    o Added tidal_basin_2d experiment (currently 1D!)
1279    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1280    
1281    checkpoint48b_post
1282    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1283     (modification to pressure gradient not yet implemented)
1284    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1285      (for U & V) that are used for vertical advection of momentum.
1286    
1287    checkpoint48a_post
1288    o In preparation for r*, use temp. array to compute vertical transport
1289       in flux-form momentum pkg. => change results of few test-exp.
1290      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1291                        lab_sea, natl_box & plume_on_slope
1292    
1293    checkpoint48
1294    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1295    
1296    checkpoint47j_post
1297    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1298    o moved adexch from forward_step to addummy_in_stepping
1299    o added exch in ctrl_map_...
1300    o aveFreq.=0. at end of cost_final to avoid overwrite in
1301      reverse checkpointing loop
1302    o Yet more changes in gmredi:
1303      * adgmredi_calc_tensor
1304        avoiding all recomputation of gmredi_slope_limit
1305      * adgmredi_x/y/rtransport
1306        added flag for excessive storing to avoid recomp. of
1307        u/v/rtans, dTdx/y/z
1308        -> this is not really necessary and very memory-consuming
1309      * adgmredi_slope_psi:
1310        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1311      * gmredi_slope_limit
1312        re-activated full calculation of taperfct for case 'ac02'
1313    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1314    
1315    checkpoint47i_post
1316    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1317    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1318      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1319    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1320    o gmredi: fix few bugs.
1321    
1322    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1323    This will be a good checkpoint to plug into the ecco-branch.
1324    o few modif.'s to get latest version adjointed
1325      (mainly kick out code in ini_linear_phisurf)
1326    o modif's to run adjoint with exactConserv
1327    o case GM_BOLUS_ADVEC should be cleaned
1328      S/R gmredi_slope_psi should be cleaned
1329    o verification/carbon now has exactConserv=.TRUE.
1330    
1331    checkpoint47g_post
1332    o time-average AIM output: becomes independent from statvars time-average
1333      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1334    o After TAF bug fix:
1335      Tested adjoint of gmredi package.
1336      Tests were done with checkpoint47 rather than with latest
1337      checkpoint47f_post since the latter is broken for the adjoint
1338      verification/carbon/ contains both ADM and TLM gradient checks.
1339    Here they are, before they get changed/lost/stolen.
1340    Mostly modif.'s to fix numerical sensitivities.
1341    Gradient checks OK for
1342    - GM_taper_scheme:
1343      * clipping
1344      * ac02
1345      * linear
1346      * glw91
1347      * dm95
1348      * ldd97
1349    - GMREDI_OPTIONS:
1350      * GM_VISBECK_VARIABLE_K
1351      * GM_NON_UNITY_DIAGONAL
1352      * GM_EXTRA_DIAGONAL
1353      * GM_BOLUS_ADVEC
1354    in conjunction with data.gmredi parameters to be checked in
1355    in a few minutes under verification/carbon/code/
1356    
1357    checkpoint47f_post
1358    Merging from release1_p10:
1359    o modifications for using pkg/exf with pkg/seaice
1360      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1361        and SEAICE_EXTERNAL_FLUXES
1362      - pkg/exf CPP options EXF_READ_EVAP and
1363        EXF_NO_BULK_COMPUTATIONS
1364      - usage examples are Experiments 8 and 9 in
1365        verification/lab_sea/README
1366      - verification/lab_sea default experiment now uses
1367        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1368    
1369    checkpoint47e_post
1370    o created a tag prior to creating a branch
1371    
1372    checkpoint47d_post
1373    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1374      at the bottom boundary had an erroneous half slip boundary condition
1375    o added bottom drag and no slip boundary condition capabilities to
1376      oceanic pressure coordinates code
1377    o added new verification experiment global_ocean_pressure, this experiment is
1378      also described in the tutorial section of the manual
1379    checkpoint47d_pre
1380    
1381    checkpoint47c_post
1382    o Added a verification experiment for a global cubed-sphere ocean run
1383      -  verification/global_ocean.cubed32x32x30
1384      -  uses pkg/therm_seaice and pkg/bulk_forcing
1385    
1386    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1387    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1388      when using P-coordinate; only implemented for atmospheric config.
1389    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1390      NOTES: requires option NONLIN_FRSURF to be "#define".
1391    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1392    
1393    checkpoint47b_post
1394    Merging from release1_p9:
1395    o pkg/seaice
1396      - removed GOTO's and added taf directives
1397      - double precision constants to reduce the g77 (Linux)
1398        to F77 (SGI) differences reported in release1_p8
1399    o tools/genmake
1400      - added SGI options
1401    o verification/testscript
1402      - updated to that of checkpoint47a_post
1403    o verification/global_ocean.90x40x15/input/eedata
1404      - modified for SGI f77 compatibility
1405    o verification/lab_sea
1406      - added description of sea-ice model
1407      - added missing matlab routines
1408      - added test of thermodynamics parallelization
1409    
1410    checkpoint47a_post
1411    o new pkg: aim_v23
1412     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1413       for now, keep the same surface forcing as before.
1414     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1415     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1416     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1417    o add diagnostic of surface correction term in monitor output
1418    
1419    o bulk_force and therm_seaice
1420    - Two packages:  bulk_force (Bulk forcing)
1421      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1422    - Earlier integration from Stephaine Dutkiewicz
1423      and Patrick Heimbach.
1424    - Two ifdef statements for compile time,
1425       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1426    
1427    checkpoint47
1428    differentiable version of checkpoint46n_post
1429    o bug fix in quasihydrostaticterms
1430    o * "clean" adjoint code (in terms of extensive recomputations)
1431        can now be obtained for all GMREDI options (i.e. for
1432        - GM_VISBECK_VARIABLE_K
1433        - GM_NON_UNITY_DIAGONAL
1434        - GM_EXTRA_DIAGONAL
1435        - GM_BOLUS_ADVEC )
1436      * However, wrong gradient check problem remains unsolved.
1437      * New CPP options have been introduced for different
1438        tapering schemes
1439    o external_fields_load now part of differentiation list
1440    o pressure needs multiple storing;
1441      would be nice to have store_pressure at beginning or
1442      end of forward_step, e.g. by having phiHyd global (5-dim.)
1443      (NB: pressure is needed for certain cases in find_rho,
1444      which is also invoked through convective_adjustment).
1445    o recomputations in find_rho for cases
1446     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1447    o #define ATMOSPHERIC_LOADING should be differentiable
1448    o ini_forcing shifted to begining of initialise_varia
1449    o Incorporating QNVS line search routines into MITgcm
1450      (this is separate code, and therefore not under pkg)
1451      lsopt/, optim/
1452    o Updated verification/carbon/
1453      - #define GM_VISBECK_VARIABLE_K
1454      - GM_taper_scheme    = 'ldd97'    
1455    
1456    checkpoint46n_post
1457    Merging from release1_p8:
1458    o verification/natl_box:
1459      updating new external_fields_load routine
1460    o New package: pkg/seaice
1461      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1462      The sea-ice code is based on Hibler (1979-1980).
1463      Two sea-ice dynamic solvers, ADI and LSR, are included.
1464      In addition to computing prognostic sea-ice variables and diagnosing
1465      the forcing/external data fields that drive the ocean model,
1466      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1467      The implied surface heat flux is then stored in variable
1468      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1469      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1470      non-local transport term.  Because this call precedes model
1471      thermodynamics, temperature under sea-ice may not be "exactly" at
1472      the freezing point by the time theta is dumped or time-averaged.
1473      N.B.: fairly large differences in accuracy occur across
1474            different platforms/compilers; comparison between
1475            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1476            generated output gives:
1477       T           S           U           V
1478      C D M    c        m  s        m  s        m  s        m  s
1479      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1480      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1481      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1482    
1483      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1484    o GAD:
1485      - generated new common blocks to account for call of
1486        same gad routines with differing traceridentities
1487        (needed to modify tracerIdentity indices in GAD.h)
1488      - generated separate common blocks for case useCubedSphereExchange
1489        (Department of Futurology)
1490      - parameter lists to gmredi_?transport: added tracerIdentity
1491      - added new key indices to tamc.h
1492    o external_fields_load:
1493      - added this routine to TAF list
1494      - needed to make some common blocks global and additional storing
1495        along the same lines as exf package (checkpoint_lev?_directives.h)
1496    o exf:
1497      updated external forcing package
1498      - bug fixes carried over from ecco-branch
1499        (missing OBCS_OPTIONS.h in two routines)
1500      - enable easy to use "no forcing".
1501      - added exf I/O for atmospheric loading
1502      - added exf I/O for runoff data
1503      - transfered scaling between exf <-> MITgcm to exf namelist
1504    o Adding new verification experiment global_with_exf.
1505      This verification experiment is almost identical to the
1506      global_ocean.90x40x15 experiment, except that it uses
1507      the exf (and cal) package instead of the
1508      external_fields_load routine (cf README file).
1509    
1510    checkpoint46m_post
1511    o modified testscript to return -- when there are no lines of "%MON" output
1512    o added new flag "quasiHydrostatic" for QH mode
1513      and new routine quasihydrostaticterms()
1514    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1515      New routine: mom_u_coriolis_nh()
1516    o fixed sign of non-hydrostatic metric terms in u and v equations.
1517      Depend on correct sign of gravitySign.
1518    o added work.pc* to .cvsignore in aim directories using ifc
1519    o introduced flag for controllin non-hydrostatic metric terms
1520  o removed gravitySign from PARM04  o removed gravitySign from PARM04
1521  o switched to g77/ifc from pgf77 in aim experiments  o switched to g77/ifc from pgf77 in aim experiments
1522    

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