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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.417 by jmc, Fri Dec 17 05:03:43 2004 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
7    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
8      this is based directly on what the model compute, so that the content of
9      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
10    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
11    o clean up build options files for SunOS, in particular
12      - remove -traditional from xmakedepend
13      - change -xarch=v9 to -xarch=native for f77
14      - restore use of make (not gmake)
15      - add CC=gcc if using g77
16    o changes per discussion of AM, JMC, & EH3 today:
17      - move redundant "grid" variables out of "state" -- in preparation of
18        creating proper CF-style coordinate variables and in recognition
19        that any/all grid variables can be easily copied (eg. w/NCO) from
20        the grid files into any of the other NetCDF files
21      - *always* output grid variables with MDSIO (this will eventually be
22        changed)
23      - output MNC grid file if useMNC is true
24    o every instance of _END_MASTER() has been found and replaced with
25      _END_MASTER( myThid ) in order to satisfy certain picky Sun
26      preprocessors
27    o re-arrange diagnostics pkg initialisation:
28     - allow each package to extend the available diagnostics list
29     - add some checking and fix small problems (multi-threaded, ...)
30     - new S/R diagnostics_fill (replace fill_diagnostics):
31       look through the short list of active diag. (instead of the long list)
32       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
33    
34    checkpoint57a_post
35    o this set of changes restores TAMC compatibility
36      tested for global_ocean.90x40x15 adjoint on trough
37      (what a pain)
38    
39    checkpoint57a_pre
40    o some modifs in tools/build_options for sunos
41    o call ctrl_pack for ctrl at end for optimcycle=0
42    
43    checkpoint57
44    o add horizontal bi-harmonic viscosity for vertical velocity
45      - new parameter viscA4W (defaults to viscA4)
46      - affects only non-hydrostatic code
47      - to be done: no-slip lateral boundary conditions
48    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
49    o implement Implicit Vertical advection for pTracers
50    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
51      (implemented also for implicit vertical diffusion & advection)
52    o OBCS: extend application of tracer open boundary conditions
53      to a strip beyond the boundary of width Olx/Oly
54    o add call monitor to TAF set of required calls (flow directives)
55      and include in natl_box_adjoint
56    o untangle a few ifdefs related to cost, ctrl, autodiff
57      untangel a few ALLOW_ECCO_OPTIMIZATION
58    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
59      (theta2, salt2 in ecco_cost_weights)
60    
61    checkpoint56c_post
62    o OBCS as control variables
63      - update ctrl_ad_diff.list, obcs_ad_diff.list
64      - remove balance of obcs controls from default
65      - fix index bug nobcs in ctrl_init
66      - fix dummy fields filen in ctrl_pack
67      - add dummy weights for obcs
68    o lsopt: comment out fort.94 output
69    o optim:
70      - remove unnecessary header files
71      - adjusted namelists
72      - add xerbla.F to Makefile
73    o exf:
74      - multiple modifications of exf_check_range
75      - unit change in exf_init_runoff from [m/year] to [m/s]
76    o mdsio:
77      - i/o-vector change debugLevel from debLevA to debLevB
78    
79    checkpoint56b_post
80    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
81      is called from DO_THE_MODEL_IO
82      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
83      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
84      - clean up PTRACERS_WRITE_TIMEAVE a little
85    o add another verification experiment that tests both the cfc-pkg and
86      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
87      reactive tendencies treated inline with regular timestepping
88    o testreport previously did a lousy job of comparing small numbers, so
89      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
90      implemented in the little c-progam tmp_cmpnum.c which is embedded in
91      testreport.
92    o ptracers_monitor: bug fix for MPI
93    
94    checkpoint56a_post
95    o GCHEM: finish reorganizating the package
96      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
97        (introduces another 3D-array for each passive tracer, but only if
98        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
99        gchemTendency is not needed because the timestep is done separately)
100      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
101      - GCHEM is now---more or less cleanly---separate from PTRACERS
102      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
103        so clear to me how that should be done in a general way.
104    o CFC: improve formatting of output in CFC_ATMOS
105    o PTRACERS:
106      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
107        that ALL experiments with ptracers enable can be checked. This makes
108        GCHEM_MONITOR obsolete.
109      - include a runtime parameter PTRACERS_monitorFreq that defaults to
110        monitorFreq
111      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
112    o add PTRACERS (PTR0[1-5]) to testreport output
113    o exf_check_range:
114      * default changed to .TRUE.
115      * will check values for niter0 if debLevA, every timestep if debLevB
116      * STOP in exf_check_range if 'out of range'
117      * range chosen generous to allow for potential extema
118      TBD: a version with stricter range
119           permitted range would be runtime parameters
120    o GMredi:
121      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
122      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
123      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
124    o GCHEM:
125      - move call to GCHEM_FORCING_SEP, so that it is now called before
126        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
127      - introduced a useGCHEM runtime flag and applied it everywhere.
128      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
129        this flag is now only visible within GCHEM-pkg routines.
130      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
131        be replaced by a 3D array that is computed before thermodynamics; for
132        this, the tracer ID iTracer had to be included into the parameter list
133        of ptracers_forcing
134      - set up forward_step to call gchem_forcing, that will replace
135        gchem_forcing_int in ptracers_forcing
136      - cleaning up
137    o small cleaning of exch2: remove files that are also in eesupp/src
138    
139    checkpoint56
140    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
141    o mnc: cleanup "full" files--fixes out-of-memory problem
142    o ECCO-GODAE
143      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
144      * fully merged and updated from SIO code
145        windstress sign change affects
146        - exf_inscal_[u/v]stress
147        - sign of xx_tau[u/v] adjustments
148        - signs in cost_scat
149      * ctrl_get_gen: avoid update of tau[u/v] for first few days
150      * natl_box_adjoint updated and compressed
151      * 2-level checkpoint switch added
152        (tested in EXP. 1 of natl_box_adjoint)
153      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
154    o SVD
155      * first complete, non-hacked version for SVD calculations
156      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
157        performed via direct access files admtlm_vector.it????
158        (via ctrl_[un]pack)
159      * optimcycle is used for ARPACK iteration counter
160        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
161      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
162        and add linear transforms where necessary
163      * controls are initial/final SST, SSS (can be extended; need to check
164        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
165    o mdsio: filename info to both stderr, stdout
166    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
167      from sign change
168    
169    checkpoint55j_post
170    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
171      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
172    o add consistent build directories and .cvsignore files to verification
173    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
174    o make all subroutines 30 or less characters in length for certain older
175      compilers to work (a thorough search only turns up two routines in
176      pkg/ptracers)
177    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
178      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
179    
180    checkpoint55i_post
181    o change arrays for total vertical diffusivity (2.D if explicit,
182      3.D if implicit) ; each ptracer uses its own background value.
183    o added mnc/NetCDF output capability to ocn_compon_interf
184      - added bits to verification/cpl_aim+ocn so that it can run on
185        ITRDA and other clusters without the mpirun "-wd" option
186    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
187      configuration
188    o give MNC the ability to create additional files rather than
189      exceeding a specified file size limit "MNC_MAX_FILESIZE"
190      - the default is just less than 2GB which is a practical limit
191        on many systems
192    o Compute the non-local term using either KPP vertical diffusivity (=default)
193       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
194    
195    checkpoint55h_post
196    o add verification test "vermix"
197    o remove all the *_ioinc flags and replace with the single global
198      outputTypesInclusive flag
199    o allow to set a vertical profile of vertical diffusivity for T & S
200    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
201    o useMNC moved from data.mnc to data.pkg
202    
203    checkpoint55g_post
204    o Renaming carbon AD experiments to comply with testreport conventions
205    o Updating adjoint of Held-Suarez hs94.1x64x5
206    o Fixing directives for non-ECCO forward_step, after ECCO directives
207      have been fixed to avoid recomp. of do_oceanic_phys
208      Works well for global_ocean.90x40x15,
209      but recomp. issue remains for carbon
210    o Updating adjoint output for natl_box_adjoint after
211      pkg/ecco has been modified (see taga c55d_post)
212    
213    checkpoint55f_post
214    o rename to timeave_init_fixed
215    
216    checkpoint55e_post
217    o some delicate re-shuffle of store directives to avoid one
218      extra call of do_oceanic_physics
219      affects ecco_the_main_loop.F, do_oceanic_physics.F
220      checkpoint_lev1_directives.h
221    o NB: this may break global_ocean adjoint temporarily,
222      but it is clear how to fix it. Will do later, need this now.
223    
224    checkpoint55d_post
225    o ECCO specific cost function terms (up-to-date with 1x1 runs)
226    o ecco_cost_weights is modified to 1x1 runs
227    o modifs to allow observations to be read in as
228      single file or yearly files
229    o enable to read exf forcing fields as either
230      single file or yearly files (flag useExfYearlyFields)
231    checkpoint55d_pre
232    
233    o switch between 2-level and 3-level checkpointing
234    o add ability of MNC to write local and "partial" (eg. 2D slices where
235      the full 3D field is never actually stored) arrays to NetCDF files
236      with the correct (that is, the complete multi-dimensional) set of
237      array indicies
238      - used in mom_vecinv() to write the diagFreq output
239      - tested (demonstrated) in verification/aim.5l_cs
240    o further mnc-ification
241      - add verification/lab_sea to the list with mnc setups
242      - fix undefined mnc v-names in cd_code
243      - add kpp to mnc output (both snapshot and timeave)
244    o non-hydrostatic code
245      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
246        in calc_gw.F
247      - defaults to viscAh
248      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
249        friction or Leith) in non-hydrostatic mode, as long as there is
250        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
251    o pkg/cost
252      extend simple cost functions to treat time mean quantities
253      (T,U,V) via cost_accumulate_state from cost_tile
254    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
255        be 2 times larger than the minimum size the advection scheme requires.
256        now get a perfect conservation of salt in advect_cs test-exp (updated)
257    o GGL90 (Gaspar's TKE mixed layer)
258      - add horizontal diffusion of TKE, requires exchanges in
259        do_fields_blocking_exchanges, horizontal diffusivity is zero by
260        default. In OPA there is no horizontal diffusion of TKE but the
261        mixing coefficients are computed from a horizontal average of TKE of
262        6 points or so. I think that diffusion has a little more physical
263        justification.
264      - clean up ggl90_calc in the hope of reducing memory usage (this hope
265        was in vain)
266      - mask tke-variable in ggl90_init
267    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
268    o fix biharmonic diffusion on CS-grid.
269    o more obcs stuff
270      - added obcs_external_fields_load as an alternative to the EXF-pkg option
271        for reading boundary values. This routine is called from
272        obcs_prescribe_read
273      - updated obcs_check
274      - changed sponge layer relaxation parameter units for days to seconds
275      - turned off sponge layer by default
276      - changed argument list of OBCS_CALC to myTime+deltaTclock
277      - fixed about 35 bugs in obcs_external_fields_load
278    
279    checkpoint55c_post
280    o obcs stuff
281      - new runtime flags useOBCSprescribe, useOBCSbalance
282      - re-arranged obcs_calc
283      - moved exf_getobcs to obcs_prescibe_read
284        obcs_prescibe_read is called after ORLANSKI stuff
285        and independent of it (executable can contain all).
286      - updated obcs_check
287      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
288        These may be necessary only if tangential velocities are
289        prescribed at OB, not sure, needs testing.
290    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
291      which simplifies the calls and passes the ifc check-bounds test
292    
293    checkpoint55b_post
294    o add a 2D scalar, Z location, exchange_2 routine.
295    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
296      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
297      affects advect_cs results (for the wrong reason): update output.txt
298    o use a more standard discretization for biharmonic viscosity ;
299     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
300      affects results of dome set-up: update output.txt
301    o fix gad_advection.F (CubedSphere part), back to version 1.23
302    o fix bug in mom_vi_del2uv.F (CubedSphere part).
303    
304    checkpoint55a_post
305    o merged code to
306      * prescribe/read time-dependent open boundaries
307        (works in conjunction with exf, cal)
308      * sponge layer code for open boundaries
309      * each boundary N/S/E/W now has its own CPP option
310        (healthy for the adjoint)
311    
312    checkpoint55
313    o up-to-date adjoint of previous breaks
314      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
315      - global_ocean_ebm: adjoint still needs fix (TLM ok)
316      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
317      - carbon: * remove tr1-related adjoint verification
318                * add ptracer as control variable
319    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
320      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
321    
322    checkpoint54f_post
323    o in verification/carbin/ remove experiment related to
324      ALLOW_PASSIVE_TRACER (array tr1 etc)
325      code_ad/ input_ad/ results_ad
326    
327    o add two new packages
328      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
329        + subject to optimization (memory)
330      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
331        + subject to reordering (many GOTOs in the original code)
332        + so far opps is called for every (i,j) point, and then operates in
333          the vertical; one may want to reorder the scheme in order operate in
334          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
335          fields)
336    o overhaul of IO so that we now have flags for MDSIO and/or MNC
337      - all verification tests compile and run with linux_ia32_g77
338      - defaults are compatible with current input files--nothing
339        should change if you were not previously using MNC
340      - MNC output has been added in numerous places (eg. timeave)
341        but there are still a few writes not yet do-able with MNC
342        (this is in progress)
343      - flags now allow for either/or/both use of MDSIO and MNC and
344        documentation will soon follow
345      - numerous small formatting cleanups for ProTeX
346    o add version info (via BUILD_INFO.h) to MNC and stdout
347    
348    checkpoint54e_post
349    o add two new packages
350      - pp81 (Packanowski and Philander, 1981), Richardson number and
351        stratification dependent mixing
352      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
353      - these scheme operate in a similar manner as KPP (without ghat, of
354        course), however there is only one diffusivity that is used for both
355        temperature and salinity (and passive tracers)ç
356    o add offline package
357    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
358      provided by Stephanie Dutkiewicz
359    o genmake2: add ability to search for C compilers and cleanup test output
360      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
361    
362    checkpoint54d_post
363    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
364    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
365      leading to additional shift by 5 days each year of integration
366       (i.e. leading to considerable offset over the years)
367    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
368    o start with no AB and no initial filtering (staggerTimeStep):
369      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
370    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
371      (external loading & cpl import/export stay in forward_step.F)
372    o update coupling interface to work with new staggerTimeStep
373    o change MDSIO ptracers_pickup.
374    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
375    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
376    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
377    
378    checkpoint54c_post
379    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
380      this affects (truncation error) output.txt of test-exp:
381       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
382    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
383    o change Qnet to always be the net heat flux, (+upward).
384      affects (truncation error) output of natl_box exp.: updated
385    o define the max number of passive tracers in PTRACERS_SIZE.h
386    o start to test mnc routinely in exp0
387    o add sea-ice loading (sIceLoad) as a new forcing field.
388    
389    checkpoint54b_post
390    o add testreport "-j JOBS" option for parallel builds (tested and pretty
391       impressive on Altix and Opteron systems)
392    o diagnostics can now write NetCDF files through the mnc package
393    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
394    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
395    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
396      affects (truncation error) output of lab_sea & natl_box exp.: updated
397    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
398    
399    checkpoint54a_post
400    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
401    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
402    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
403    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
404      + internal_wave (shift in writing cg2d_ini_res)
405    checkpoint54a_pre
406    
407    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
408      - modified verification/lab_sea and natl_box_adjoint accordingly
409    
410    checkpoint54
411    checkpoint53g_post
412    o prepare splitting of thermodynamics: store convect.counter in common block
413    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
414      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
415    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
416    o new parameter "nShapS": allow to treat differently S from T (nShapT)
417    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
418    o restore adjointability
419    
420    checkpoint53f_post
421    o modifications that affect AIM experiment results (update output.txt):
422      - no advection of S at top interface Nr (pkg/generic_advdiff)
423      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
424    o AIM pkg:
425      - include stability function into surf.Flux derivative relative to Tsurf
426      - calculate clear-sky radiation & surface temp. change (for diagnostics)
427    
428    checkpoint53e_post
429    o merged cylindrical coord configuration
430    o added rotating_tank experiment
431    checkpoint53e_pre
432    
433    checkpoint53d_post
434    o faulks upgraded: re-generate output.txt that have changed:
435       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
436    o Added Bryan and Lewis, 1979, vertical diffusivity profile
437    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
438    o added Sadourny discretization of Coriolis
439      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
440      - re-enabled use of omega3 (useAbsVorticity)
441    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
442      vector-invariant equations
443      - note: does *NOT* yet use same variable visc. for no-slip BC's.
444    o recoded the lateral boundary conditions for non-hydrostatic w, this time
445      hopefully without new bugs
446      - still to do: biharmonic friction for non-hydrostatic w
447    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
448    o regenerated output for global_ocean_ebm (using -ieee)
449    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
450      of mom_common/
451      - simple re-arrangement of instructions within computing loop
452    checkpoint53d_pre
453    
454    checkpoint53c_post
455    o new version of coupler for AIM+thSIce and Ocean models
456     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
457     - land: change Evaporation of snow
458     - aim with thSIce: fix bug in snow-precip.
459    o changes to calc_gw.F
460     - bug fix for w^2 term near the bottom boundary
461     - (hopefully) improve the lateral slip boundary condtions for use with
462        partial/looped cells
463      - because the bug fix changes two verification experiments anyway (exp5
464        and plume on slope), change the lateral boundary condition from half slip
465        to the value of no_slip_sides
466    o ebm package wasnt quite up to the parallel task. Fixed that.
467    o Adjoint of EBM package + verification
468      * TLM OK
469      * ADM not sufficient accuracy yet (needs further testing)
470    
471    checkpoint53b_post
472    o Commiting new energy balance model to repository
473      * package is pkg/ebm
474      * verif. is verification/global_ocean_ebm
475      * references are in ebm_driver.F
476    C      * X. Wang, P. Stone and J. Marotzke, 1999:
477    C        Global thermohaline circulation. Part I:
478    C        Sensitivity to atmospheric moisture transport.
479    C        J. Climate 12(1), 71-82
480    C      * X. Wang, P. Stone and J. Marotzke, 1999:
481    C        Global thermohaline circulation. Part II:
482    C        Sensitivity with interactive transport.
483    C        J. Climate 12(1), 83-91
484    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
485    C        Destabilization of the thermohaline circulation
486    C        by atmospheric eddy transports.
487    C        J. Climate 7(12), 1870-1882
488    o Will need long integration testing.
489    checkpoint53b_pre
490    
491    o created pkg/mom_common in preparation for variable viscosity code
492    o renamed and split ini_mnc_io
493    o pkg/land: only liquid water can diffuse or run-off
494    o AIM using land: soil wetness availability account for snow
495    o added printMapIncludesZeros to EEPARMS namelist
496    
497    checkpoint53a_post
498    o restore TAMC compatiility for exf_constants.h
499      (no usage of _d in .h)
500    o Additional storing in KPP in an attempt to fix
501      TAMC problem with adjoint of KPP code.
502      (no success...)
503      Identical code works fine with TAF.
504    o Fixed verification/natl_box_adjoint experiments.
505      Initial conditions for Experiments 4 and 5 are now
506      set to "SEAICE_initialHEFF=0", which is more reasonable,
507      and hence gives results closer to that of Experiment 2.
508      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
509    
510    checkpoint53
511    o stable checkpoint with up to date adjoint
512      TLM tests only run for 1st grdchk at the moment. Its unclear if
513      this is a code problem or a problem with resetting code for g_
514      variables that is being autogenerated wrong.
515      Otherwise:
516       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
517       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
518         are both still in chaos following their security messes.
519    
520    checkpoint52n_post
521    o various build (mostly genmake2) changes including:
522      - ability to build/run more easily within Cygwin and MacOS X
523      - more complicated Makefiles with a stronger dependence on Gnu Make
524    o pkg/seaice modifications
525      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
526        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
527        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
528      - changed proxy for geostrophic velocity and updated
529        verification/lab_sea/results/* accordingly
530      - removed ADI dynamic solver from pkg/seaice
531      - replaced all occurrences of 1/CSTICE or 1/CSUICE
532        they caused a segmentation fault under certain circumstances
533      - removed unused field WATR
534    o bug fix in exf-package:
535      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
536         now reflect that.
537    o small fixes in the cal-package:
538      - set reference date to first of January for the 'model'-calendar
539      - failing of cal_CheckDate in cal_FullDate now actually results in a
540        warning
541    o small modifications in exf-package to increase flexibility:
542      - change climtempfreeze from a constant to a runtime parameter that
543        is specified in data.exf_clim (default = -1.9)
544      - introduce runtime parameter windstressmax (default = 2.0) that is
545        specified in data.exf
546    o fix in pkg/thsice:
547      - update Evap (Tsf changes) to be consistent with Latent heat flux
548      - maintain snow precipitation unchanged (even if Tsf >=0).
549     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
550    
551    checkpoint52m_post
552    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
553      this does not change any of the results, because myIter=0 in swfrac always
554      lead to jwtype=2 (the default anyway), but the call makes little sense
555      as a default
556    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
557    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
558      atmospheric model (AIM) to use it ; add a "slab ocean" component.
559    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
560    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
561    o extending useSingleCpuIO option to work with new exch2 I/O format
562      - old-style, missing-tile I/O is still accessible by defining CPP
563        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
564    o monitor package can write to NetCDF files and/or STDOUT
565    o fix re-definition bug in MNC_GRID_INIT_ALL()
566    o doc/api_reference added
567      - a framework for building an API Reference Manual using all
568        the "protex" comments embedded in the code
569      - see pkg/generic_advdiff, pkg/mnc for examples
570    o MNC:
571      - make myThid the last argument for all subroutines
572      - new default for the grid files: NO halos
573      - add useMNC and other run-time flags
574      - separate per-file-group handling of the unlimited dimension
575      - early initialization of MNC w/ flags read at the eeboot stage
576        and lookup tables set in initialize_fixed
577      - write all MNC output to a freshly-created directory
578    o thermodynamics sea-ice (thsice) is now tested with testreport.
579    o test exp. advect_cs: use the standard cs32 grid ; update output.
580    o Added functionality to grdchk:
581      pick global i,j,k position (or nearest wet) where to perform check.
582    
583    checkpoint52l_post
584    o new land formulation:
585      a) use ground enthalpy as prognostic variable to ensure exact
586         energy conservation.
587      b) account for water temperature and for latent heat of freezing
588         in all processes (rain, run-off, ground storage)
589      c) compute surface and ground temperature implicitly.
590    o aim_v23 modification for new land model:
591      a) Treat separately land / ocean / sea-ice surface fluxes
592         to allow implicit computation of land & sea-ice surface temp.
593      b) add snow precipitation.
594    checkpoint52l_pre
595    
596    o fix problem (when 1 tile is empty) in min/max monitor.
597    o fix bug in timeAve (u,vZetatave in common block)
598    o no restoring terms under ice for pkg/seaice
599    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
600    o bug fix for pkg/seaice pickups
601    o change MNC call locations and add coordinate attributes
602    o mask vorticity at the corner ; affects global_ocean.cs output
603    o fix ini_curvilinear_grid ; test CS experiments with mpi
604    o aim.5l_cs: modify sea-ice fraction input file ; update output
605    o exf: Adding simple range check routine for exf fields after read
606    
607    checkpoint52k_post
608    o removed top-level directory "diags"
609      - we migrated these functions to pkg/timeave a long time ago
610    o fixed bug introduced in pkg/monitor
611    o accuracy ctrlprec = 32 insuffient for gradient checks using
612      averaged fields (I/O via cost_averages)
613      -> use ctrl.h in active_file*.F to control I/O precision.
614    o paramter list of CALL ADTHE_MAIN_LOOP
615    o added initial do_the_model_io to ecco
616    o set all ...Freq to zero after cost_final
617      taveFreq, dumpFreq, pChkptFreq
618    o MAIN and ECCO differentiability restored
619    
620    checkpoint52j_post
621    o fix nchklev in tamc.h for global_ocean...
622    o Bringing flow and store directives up-to-date
623    o Really weird thing!
624      call do_the_model_io from the_main_loop with parameters
625      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
626      TAF places a faulty re-call of initialise_varia
627      after cost_final call which should not be there!
628    checkpoint52j_pre
629    
630    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
631      error messages
632    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
633    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
634      debug output
635    o modfied mdsio_writefield.F to handle non-global files under exch2
636    o update AIM Cubed-Sphere exp (aim.5l_cs):
637      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
638    o update AIM Equatorial Channel exp:
639      use standard aim_v23 pkg and change the SST fields to be more realistic.
640    o globalFile now works with exch2
641    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
642      mon_vort3.F to make exch2 friendly with >1 tile per cube face
643    o limit timeave output for hi-res integrations
644    
645    checkpoint52i_post
646    o removed CPP_EEOPTIONS.h from verification/*/code
647    o updated the tiling for global_ocean_pressure
648    checkpoint52i_pre
649    
650    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
651      the old pkg/aim).
652    
653    checkpoint52h_pre
654    o shortened offending lines in exch2_send_rx?.template
655    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
656    o genmake2: add build & execute test for NetCDF code
657    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
658      old grid files, moved CPP_EEMACROS.h to pkg/exch2
659    o added useSingleCPUIO flag to monitor.F and mon_out.F
660    o added temporary hack for sea-ice dynamics on the cube:
661      metric terms are ignored and it is assumed that
662      there is no sea-ice on cube faces 1, 2, 4, and 5.
663    
664    checkpoint52f_post
665    o added exch2 cube routines to pkg/exch2
666    o modified hs94.cs-32x32x5 to use it
667    o added new grid files to hs94.cs-32x32x5
668    checkpoint52f_pre
669    
670    checkpoint52e_post
671    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
672      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
673    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
674      to work with implicit vertical advection and AB ;
675    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
676    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
677     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
678    checkpoint52e_pre
679    
680    o fix bug in impldiff when Nr=1 or Nr=2.
681    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
682    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
683    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
684      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
685    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
686    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
687    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
688    
689    checkpoint52d_post
690    o re-tiled many expts to allow comparison in multi-processor mode
691      - updated output accordingly
692      - changed hs94.128x64x5 to use intial T from file rather than use the
693        random number generator
694    o add infrastructure in model routines for fizhi and gridalt packages
695    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
696    o changes to permit hi-res, cubed-sphere, configuration
697      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
698      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
699      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
700        of surface winds for the cube
701      (A verification experiment, based on global_ocean.cs32x15, but with
702       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
703       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
704       complete with example surface forcing files and matlab scripts to look
705       at the output and compare it with that of global_ocean.cs32x15.)
706    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
707       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
708       to conform to the common rule.
709    o check-in the first version of the coupler + interfaces for multi-components
710       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
711       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
712       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
713       - ocean and atmos. share the same horizontal grid (no interpolation).
714       - exchanges between component and coupler is done in forward_step
715    o new verification experiment, cpl_aim+ocn:
716       coupled ocean - AIM atmosphere on cs32 grid.
717    
718    checkpoint52d_pre
719    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
720    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
721    
722    checkpoint52c_post
723    o Fixing OPTIONS files for use of exf:
724      - ALLOW_ECCO not needed
725      - ECCO_CPPOPTIONS.h should not be included from
726        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
727        as has been the case in the past
728      - All cal/exf related options are currently set in
729        single header file. Should remain so until we
730        agree on a consistent new policy.
731    o Removed all CPP options for cal package.
732      cal has no more CPP options.
733    o modified STOREs in GAD_ADVECTION
734    o corrected key comp. for passkey
735    
736    checkpoint52b_post
737    o new version: "thsice" of thermodynamic sea-ice pkg:
738     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
739     - modify fluxes but do not change theta directly;
740     - light cleaning of bulk_force pkg (still needed with thsice).
741     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
742       + output_thsice.txt to test thsice & bulk_force pkgs.
743    o put back grid & coriolis monitor output.
744    checkpoint52b_pre
745    
746    o call "do_the_model_io" at the beginning (=> dump initial state)
747    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
748    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
749      (need info on NUMBER_OF_PTRACERS)
750    o missing PTRACERS headers in some routines
751    o default tamc.h in pkg/autodiff supposed to crash
752      to ensure proper customization
753    
754    checkpoint52a_post
755    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
756      - moved surfaceTendencyTice from pkg/seaice to main code
757      - subroutine FREEZE_SURFACE now limits only surface temperature
758        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
759        => new output.txt for global_ocean.cs32x15 & global_with_exf
760      - keep the old version of FREEZE for backward compatibility;
761        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
762      - corresponding modifs for TAF directives
763    o added surface flux output variables to TIMEAVE_STATVARS
764    o time-averaged output for pkg/ptracers
765    o fix problem with ECCO-related divided adjoint
766      snapshot file was missing some ad-variables,
767      but no warning issued by TAF
768    
769    checkpoint52a_pre
770    o some bug fixes for #undef REAL4_IS_SLOW
771    
772    checkpoint52 = ecco_c52_e35
773    o after testing adjoints of checkpoint51u_post
774    
775    checkpoint51u_post
776    o this is the post-merge tag of the ecco-branch
777      (needs another clean checkout and re-testing)
778    o various natl_box_adjoint configs and results
779      but no input fields
780    o obcs adjoint not yet merged!
781    o adding ECCO global 1x1 and 2x2 degree configs
782    o updated/extended some store directives for seaice
783    o pkg/ecco now containes ecco-specific part of cost function
784    o top level routines the_main_loop, forward_step
785      supersede those in model/src/
786      previous input data.cost now in data.ecco
787      (new namelist ecco_cost_nml)
788    o in ctrl/ cleaned some cross-dependencies and updated CPP options
789    
790    checkpoint51t_post
791    o this is the pre-merge tag of the ecco-branch
792    
793    checkpoint51s_post
794    o cleanup: removed various obsolete #define-s
795    o pkg/grdchk
796      - renamed 'ph-grd 3' to 'grad-res'
797      - merged from ecco-branch
798        (remaining bug fixes for obcs gradient checks)
799      - additional high-precision output for testreport
800        (grep for 'precision_grdchk_result')
801    
802    checkpoint51r_post
803    o cleaned up or removed CPP_OPTIONS.h files
804    o updated results for some of the tests to reflect the new
805      optfiles (-ieee: -O0 instead of -O3)
806    
807    checkpoint51q_post
808    o cd_code:
809      - moved cd_scheme.F -> cd_code_scheme.F
810      - separate read_checkpoint from cd_code_ini_vars.F
811      - separated cd_code part from write_checkpoint
812      - updated AD_SOURCE, generated .flow
813      - added CD_CODE_VARS.h to the_main_loop
814      - Moving cd_code specific store dir.s to pkg/cd_code
815    o ctrl package totally restructured
816      - pack/unpack now optional and decoupled from
817        xx_/adxx_ I/O
818      - ctrl_pack/unpack cleaned
819        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
820      - confined inclusion of AD_CONFIG.h to where necessary.
821    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
822    
823    checkpoint51p_post
824    o create initial cd_code package
825      - WARNING: the initialization of fields within packages
826        is broken because INI_FIELDS (where READ_CHECKPOINT is
827        called) is called *before* PACKAGES_INIT_VARIABLES.
828        This seems to be backwards since
829        1) its important to initially zero the entire field including
830           the "halo" region
831        2) zeroing needs to be done *before* reading pickup info
832           and the pickup call might or might not happen in any
833           particular run
834      - this needs an overhaul for R2
835    o cleanup verification/*/code/GMREDI_OPTIONS.h
836    o cleanup testreport
837    
838    checkpoint51o_post
839    o bringing AD-related verif's up to date with genmake2
840      - carbon/
841      - global_ocean.90x40x15/
842      - hs.94.1x64x5/
843      - (front_relax/ )
844    o (more) consistent directory structure for AD-related verif.'s
845    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
846    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
847    o bug fix in find_alpha.F for MDJWF:
848      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
849        change rho -> rho-rhoConst
850      - replace call find_rho to find_rhonum
851    o initialisation of rFlx extended to full array (required by TAF)
852      and shifted to thermodynamics
853    o removed PTRACERS.h in ptracers routine
854    o added surfacetendencyPtr to S/R parameter list pracers_forcing
855    o Correcting initialisations for fVerU, fVerV.
856    o helping TAF to recognize dependency on kUp for
857      fVerU, fVerV
858    o Replacing delZ by delR in pkg/ctrl/
859    checkpoint51o_pre
860    
861    o undid all of cp51 pending some cleanups and discussion
862    o added the [#include "AD_CONFIG.h"] statement to all files that need
863       it for adjoint/tl #defines
864     o re-worked the build logic in genmake2 to support AD_CONFIG.h
865     o removed tools/genmake since it no longer works
866    
867    checkpoint51n_post
868    o modifications to make FREEZE flux visible to pkg/kpp
869      - moved surfaceTendencyTice from pkg/seaice to main code
870      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
871      - subroutine FREEZE now limits only surface temperature
872        (this means new output.txt for global_ocean.90x40x15,
873         global_ocean.cs32x15, and global_with_exf)
874    o added surface flux output variables to TIMEAVE_STATVARS
875    
876    checkpoint51n_pre
877    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
878    o added [#include "AD_CONFIG.h"] to all files that use the following
879      defines:
880      - ALLOW_ADJOINT_RUN
881      - ALLOW_TANGENTLINEAR_RUN
882      - ALLOW_ECCO_OPTIMIZATION
883    
884    checkpoint51m_post
885    o incorporating changes to get TAMC/TAF working in genmake2
886      - added new TAMC/TAF targets to the Makefile
887      - various cleanups related to package handling
888      - these changes should have no impact on the forward model
889    
890    checkpoint51l_post
891    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
892     - faster algorithm for cal_addtime.F
893     - higher precision arithmetic, where needed
894     - pkg/exf *startdate variables changed from calendar date to
895       model integration time
896    
897    checkpoint51l_pre
898    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
899    o enable to apply restoring on S & T only in a latitude band.
900    o update output (external_forcing_surf modif. change truncation errors)
901       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
902    
903    checkpoint51k_post
904    o change default to: useNHMTerms=.FALSE.
905     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
906       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
907     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
908        exp1, ideal_2D_oce
909     - change data file of oceanic exp (leave the results unchanged for now)
910       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
911    o set gravitySign automatically according to the vertical coordinate used
912      (and change sign: back to "logical" value: +1 when R increases downward)
913    o added an include barrier to the default CPP_OPTIONS.h and
914      removed the #include "PACKAGES_CONFIG.h" from it
915    o fix a bug in mom_fluxform (from chk51j_post)
916    
917    checkpoint51j_post
918    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
919    o adjusted some flow directives (dynamics, thermodynamics)
920    o added cubed-sphere case to test cost function
921    o heckpoint_lev?_directives.h now include
922      pkg-specific directives, whenever those are enabled.
923    o Moving pkg-specific flow directives to corresponding pkg
924      Moving pkg-specific differentiation list to corresponding pkg
925      Moving pkg-specific checkpoint-lev storing to corresponding pkg
926      ---> conventions are
927           - pkg_ad.flow
928           - pkg_ad_diff.list
929           - pkg_ad_check_lev?_dir.h
930    
931    checkpoint51i_post
932    o merge of the branch-genmake2
933      - knowingly breaks the older genmake
934      - automatic generation of all ALLOW_${PKG_NAME} defines
935      - new testreport supersedes older testscript
936    o large number of package inclusion and header cleanups
937    checkpoint51i_pre
938    
939    o new output for adjoin of global ocean vector invariant
940    o fix for checkpoint of thermodynamic seaice and bulk_force
941    o Steph gchem various cleanups
942    
943    checkpoint 51h_pre
944    o fixed some single quotes
945    o modify gchem pkg to be more versatile
946    o modifications to clean up dic pkg
947    o add pkg/cfc
948    
949    checkpoint51g_post
950    o provide links for ARPACK and ADM*TLM
951    o start removing verification/vero/
952    o update AD-related stuff
953      (in particular some IF-statements in model/src/ routines)
954    o adding to verification/global_ocean.90x40x15/ adjoint of
955      vector invariant setup
956    
957    checkpoint51f_post
958    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
959    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
960      of tracer Green's fucntions for ocean inversion project.
961    
962    checkpoint51f_pre
963    o Added on-the-fly spatial interpolation capability
964        "USE_EXF_INTERPOLATION" to pkg/exf.
965      - This is a temporary Cartesian-grid hack until
966        the super-duper ESMF coupler becomes available.
967      - See verification/global_with_exf/README for usage example.
968      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
969        flags and modified pkg/seaice accordingly.
970    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
971        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
972        non-local transport term.
973    
974    checkpoint51e_post
975    o pkg/mom_vecinv:
976      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
977      - add time-ave diagnostic of vorticity advection.
978    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
979    o atmospheric geopotential: - include water vapor effect;
980                                - use p^kappa in p* scaling.
981    o land pkg: read initial state from files.
982    o AIM : add stratospheric drag in the upper level
983    
984    checkpoint51d_post
985    o change function ILNBLNK (=> last non-blank char.) to return zero
986      (instead of the string length) when the string. char is empty
987    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
988    o modif's to restore TAMC compatibility
989      - avoid "_d" constructs in PARAMETER declarations
990      - avoid interrupting lines by comment lines
991    o Use cluster local disks for purely local I/O
992      vs. globally visible disks needed for ctrl stuff
993      (merged from ecco-branch)
994      - new active_file_loc... and mdsio_..._loc routines
995      - affected packages: autodiff, ctrl, grdchk, mdsio
996    
997    checkpoint51c_post
998    o introducing integer flag debugLevel
999      - debLevZero: suppress all output
1000      - debLevA: standard
1001      - debLevB: equivalent to current debugMode=.TRUE.
1002    o introducing pathname variable mdsioLocalDir for mdsio
1003      that can be specified at runtime
1004      (relevant for cluster I/O to local disk)
1005    `
1006    >>>checkpoint51b_post
1007    adjoint of ptracers
1008    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1009    o extended state in checkpoint_lev?, etc.
1010    o alternative ctrl/cost with tr1 or ptracer
1011    o new comlev1_bibj_ptracers
1012    o new ptracers.flow
1013    o made ptracers_forcing same as external_forcing_s
1014    o added verification for adjoint with ptracers
1015      - adm. grdchk fail so far
1016      - tlm. grdchk OK
1017      - checked tapelev/comlev recomputations: OK
1018    <<<checkpoint51b_pre
1019    
1020    checkpoint51a_post
1021    o added code for biogeochemistry package
1022      - new pkgs: dic, gchem
1023      - new subroutine in ptracers
1024    o modify code for biogeo packages
1025      - in model/src and pkg/ptracers
1026    
1027    checkpoint51
1028    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1029      - autodiff, ctrl, exf, grdchk, seaice
1030      kept separate packages
1031      - cost, ecco, obcs
1032    o updating verification/internal_wave, verification/lab_sea
1033      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1034    
1035    checkpoint50i_post
1036    o Preparing next differentiable checkpoint and sync
1037      of MAIN vs. ecco-branch
1038      - 1st step: this one is differentiable
1039      - 2nd step: next(! not this) checkpoint will have updated packages
1040                  from ecco-branch)
1041    
1042    checkpoint50h_post
1043    o new package "land": provide surface BC for AIM.
1044    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1045    o AIM: use true log-P extrapolation for near surface temp (= as in
1046        F.Molteni paper) ; update aim.5l_cs output.
1047    o New variable in PARM03 for more flexible pickups
1048    o somewhat cleaned package initialisation sequence for
1049      ctrl/ cost/ ecco/ in packages_... routines
1050    
1051    checkpoint50g_post
1052    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1053      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1054      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1055        made the default because of faster convergence than ADI
1056    
1057    checkpoint50f_post
1058    o exf totally restructured
1059      - replaced all exf_set_ routines by one generic exf_set_gen.F
1060        and made sure it's still differentiable
1061      - split exf_getffields.F into new exf_bulkformulae.F
1062      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1063      - updated adjoint/makefile and relevant verif. accordingly
1064    
1065    checkpoint50f_pre
1066     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1067          + change Evap over land. (update aim.5l_cs output)
1068     o added missing .cvsignores and made uniform across expts
1069     o changed configuration of tidal_basin_2d expt
1070     o added pkg/debug functions for tracing code in fatal crashes
1071     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1072     o new fn in pkg/monitor to stop model if solution grows too big
1073     o removed lots of single quotes from comments
1074    
1075    checkpoint50e_post
1076    o make KPP work with PTRACERS
1077     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1078       nearly a copy of kpp_transport_s
1079     - there is no analogue to SurfaceTendencyS, so I have to use
1080       gPtr(of the surface layer) instead
1081    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1082    checkpoint50e_pre
1083    
1084    checkpoint50d_post
1085    o change kpp output from multiple-record state files to single-record state
1086      files analogous to write_state.F
1087    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1088      analogous to the cg2d-related output.
1089    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1090      so that writing to internal file fn (with length 512) fails.
1091    checkpoint50d_pre
1092    
1093    checkpoint50c_post
1094    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1095    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1096    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1097    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1098    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1099    
1100    checkpoint50c_pre
1101    Merging from release1_p13:
1102    o bug fix for pkg/seaice dynamic solver
1103    o Added SEAICE_initialHEFF to pkg/seaice
1104    
1105    checkpoint50b_post
1106    o store u*,v* in gU,V instead of in guNm1,gvNm1
1107    o in order to put the momForcing out of the Adams-Bashforth:
1108      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1109      to timestep.F
1110    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1111    o re-generate output for highly sensitive test-exp:
1112       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1113    
1114    checkpoint50b_pre
1115    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1116    o corrected CPP option mismatch in exf_Bulk... functions for case
1117      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1118    
1119    checkpoint50a_post
1120    o Bug fix for merging between c50 and KPP.
1121      ikey was passed from thermodynamics to kpp_calc via
1122      common block rather than being recomputed in kpp_calc,
1123      in contradiction with new key itdkey.
1124      New key ikppkey created, and tamc.h headers updated.
1125    
1126    checkpoint50
1127    - 2nd step of merge with ecco-branch:
1128      merge changes in ecco-branch back into main trunk
1129    - bug fix in find_alpha
1130    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1131    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1132    - merged some sliced AD support routines
1133    
1134    checkpoint49
1135    merged from ecco-branch:
1136    o exf:
1137      - Enable initialisation of forcing fields to constant
1138        (runtime) values.
1139      - in exf_getffields.F
1140        Reduce i-/j-loop to interior domain, discarding overlaps.
1141        That also fixes wrong TAF-key computations for key_1, key_2
1142        with bulf formulae.
1143      - exf_init.F modify #ifdef for exf_init_evap
1144      - exf_getffieldrec.F, ctrl_getrec.F
1145        The following INT-usages are not safe:
1146          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1147          fldcount = int(fldsecs/fldperiod) + 1
1148        and were modified.
1149    o autodiff: checkpoint_lev...
1150      - updated storing for bulk formulae (some arrays were missing)
1151      - added state for seaice package
1152      - synchronized with main branch
1153    o DIVA:
1154      Modif.s in
1155      - the_main_loop.F
1156      - the_model_main.F
1157      and added cost_final_restore.F cost_final_store.F
1158      o With these changes, it is possible to fully separate
1159        the first forward run to compute the cost function (mdthe_main_loop)
1160        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1161        into separate model executions.
1162        This enables better tuning of DIVA to given queue sizes.
1163      o Loss of cost function value in consecutive DIVA runs is
1164        fixed by storing to 'costfinal' file.
1165      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1166        beginning/end of adjoint integration is accounted for.
1167      The current changes apply to TAF-1.4.26.
1168      TAF has one remaining bug, requiring one manual change
1169      (see MITgcm manual).
1170    o cal: synchronized between MAIN and ecco-branch
1171    
1172    checkpoint48i_post
1173    o Changes to restore differentiability of code w.r.t. previous tag
1174      (mostly adding new routines to make list and replacing
1175      pressure by totPhiHyd).
1176    o Updated and merged grdchk package
1177      - has both ADM and TLM checks
1178      - works for single- and multi-proc.
1179      - output cleaned
1180      - worked successfully for parallel DIVA
1181    o genmake:
1182      - Adding -platform=SP4
1183      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1184    o Modif. for DIVA:
1185      ctrl_unpack should not be called in intermediate DIVA interval.
1186      (similar thing would apply for active files such as
1187      tbar, sbar, psbar, which should not be reinitialised;
1188      only relevant for ecco-branch)
1189    
1190    checkpoint48h_post
1191    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1192    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1193    o Added SEAICE_initialHEFF to pkg/seaice
1194    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1195    
1196    checkpoint48g_post
1197    --- EOS:
1198    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1199      store total Potential in totPhyHyd for diagnostics & EOS.
1200    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1201    --- Pressure/geopotential gradient:
1202    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1203    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1204      ( changes results of global_ocean_pressure )
1205    o NLFS + z-coord.: add eta*Rho' contribution.
1206    o accurate phiHyd when using interface-W at the middle between 2 centers
1207     ( changes results of ideal_2D_oce )
1208    o includes r* 2nd term in potential gradient.
1209    
1210    checkpoint48f_post
1211    Merging from release1_p12:
1212    o Modifications for using pkg/exf with pkg/seaice
1213      - improved description of the various forcing configurations
1214      - added basic radiation bulk formulae to pkg/exf
1215      - units/sign fix for evap computation in exf_getffields.F
1216      - updated verification/global_with_exf/results/output.txt
1217    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1218      (SBO) core products, including oceanic mass, center-of-mass,
1219      angular, and bottom pressure (see pkg/sbo/README.sbo).
1220    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1221      to avoid negative values in shallow regions.
1222      - updated verification/natl_box/results/output.txt
1223      - updated verification/lab_sea/results/output.txt
1224    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1225    o Added useSingleCpuIO option (see PARAMS.h).
1226    o Updated useSingleCpuIO option in mdsio_writefield.F to
1227      work with multi-field files, e.g., for single-file pickup.
1228    o pkg/seaice:
1229      - bug fix in growth.F: QNET for no shortwave case
1230      - added HeffFile for specifying initial sea-ice thickness
1231      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1232    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1233      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1234    o pkg/seaice:
1235      - adjoint-friendly modifications
1236      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1237    
1238    checkpoint48e_post
1239    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1240    o dynamics: change definition of computational domain & adapt mom_fluxform
1241      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1242    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1243        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1244        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1245        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1246        inverted_barometer solid-body.cs-32x32x1
1247      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1248    
1249    checkpoint48d_post
1250    o in preparation for r*:
1251     a) use pre-computed gradient of hydrostatic potential:
1252        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1253     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1254        => affects results of glob_oce_pressure (different truncation error)  
1255      update output.txt of ideal_2D_oce & global_ocean_pressure
1256    
1257    checkpoint48d_pre
1258    o in preparation for r*:
1259      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1260      pass the 2 comp. of the grad. as arguments to momentum S/R.
1261      but for the moment, only used if it does not change the results.
1262    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1263    
1264    checkpoint48c_post
1265    Modifications in treatment of initial flux forcing controls
1266    to avoid extra storing of flux fields.
1267    
1268    checkpoint48c_pre
1269    o Added tidal_basin_2d experiment (currently 1D!)
1270    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1271    
1272    checkpoint48b_post
1273    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1274     (modification to pressure gradient not yet implemented)
1275    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1276      (for U & V) that are used for vertical advection of momentum.
1277    
1278    checkpoint48a_post
1279    o In preparation for r*, use temp. array to compute vertical transport
1280       in flux-form momentum pkg. => change results of few test-exp.
1281      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1282                        lab_sea, natl_box & plume_on_slope
1283    
1284    checkpoint48
1285    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1286    
1287    checkpoint47j_post
1288    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1289    o moved adexch from forward_step to addummy_in_stepping
1290    o added exch in ctrl_map_...
1291    o aveFreq.=0. at end of cost_final to avoid overwrite in
1292      reverse checkpointing loop
1293    o Yet more changes in gmredi:
1294      * adgmredi_calc_tensor
1295        avoiding all recomputation of gmredi_slope_limit
1296      * adgmredi_x/y/rtransport
1297        added flag for excessive storing to avoid recomp. of
1298        u/v/rtans, dTdx/y/z
1299        -> this is not really necessary and very memory-consuming
1300      * adgmredi_slope_psi:
1301        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1302      * gmredi_slope_limit
1303        re-activated full calculation of taperfct for case 'ac02'
1304    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1305    
1306    checkpoint47i_post
1307    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1308    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1309      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1310    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1311    o gmredi: fix few bugs.
1312    
1313    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1314    This will be a good checkpoint to plug into the ecco-branch.
1315    o few modif.'s to get latest version adjointed
1316      (mainly kick out code in ini_linear_phisurf)
1317    o modif's to run adjoint with exactConserv
1318    o case GM_BOLUS_ADVEC should be cleaned
1319      S/R gmredi_slope_psi should be cleaned
1320    o verification/carbon now has exactConserv=.TRUE.
1321    
1322    checkpoint47g_post
1323    o time-average AIM output: becomes independent from statvars time-average
1324      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1325    o After TAF bug fix:
1326      Tested adjoint of gmredi package.
1327      Tests were done with checkpoint47 rather than with latest
1328      checkpoint47f_post since the latter is broken for the adjoint
1329      verification/carbon/ contains both ADM and TLM gradient checks.
1330    Here they are, before they get changed/lost/stolen.
1331    Mostly modif.'s to fix numerical sensitivities.
1332    Gradient checks OK for
1333    - GM_taper_scheme:
1334      * clipping
1335      * ac02
1336      * linear
1337      * glw91
1338      * dm95
1339      * ldd97
1340    - GMREDI_OPTIONS:
1341      * GM_VISBECK_VARIABLE_K
1342      * GM_NON_UNITY_DIAGONAL
1343      * GM_EXTRA_DIAGONAL
1344      * GM_BOLUS_ADVEC
1345    in conjunction with data.gmredi parameters to be checked in
1346    in a few minutes under verification/carbon/code/
1347    
1348    checkpoint47f_post
1349    Merging from release1_p10:
1350    o modifications for using pkg/exf with pkg/seaice
1351      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1352        and SEAICE_EXTERNAL_FLUXES
1353      - pkg/exf CPP options EXF_READ_EVAP and
1354        EXF_NO_BULK_COMPUTATIONS
1355      - usage examples are Experiments 8 and 9 in
1356        verification/lab_sea/README
1357      - verification/lab_sea default experiment now uses
1358        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1359    
1360    checkpoint47e_post
1361    o created a tag prior to creating a branch
1362    
1363    checkpoint47d_post
1364    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1365      at the bottom boundary had an erroneous half slip boundary condition
1366    o added bottom drag and no slip boundary condition capabilities to
1367      oceanic pressure coordinates code
1368    o added new verification experiment global_ocean_pressure, this experiment is
1369      also described in the tutorial section of the manual
1370    checkpoint47d_pre
1371    
1372    checkpoint47c_post
1373    o Added a verification experiment for a global cubed-sphere ocean run
1374      -  verification/global_ocean.cubed32x32x30
1375      -  uses pkg/therm_seaice and pkg/bulk_forcing
1376    
1377    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1378    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1379      when using P-coordinate; only implemented for atmospheric config.
1380    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1381      NOTES: requires option NONLIN_FRSURF to be "#define".
1382    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1383    
1384    checkpoint47b_post
1385    Merging from release1_p9:
1386    o pkg/seaice
1387      - removed GOTO's and added taf directives
1388      - double precision constants to reduce the g77 (Linux)
1389        to F77 (SGI) differences reported in release1_p8
1390    o tools/genmake
1391      - added SGI options
1392    o verification/testscript
1393      - updated to that of checkpoint47a_post
1394    o verification/global_ocean.90x40x15/input/eedata
1395      - modified for SGI f77 compatibility
1396    o verification/lab_sea
1397      - added description of sea-ice model
1398      - added missing matlab routines
1399      - added test of thermodynamics parallelization
1400    
1401    checkpoint47a_post
1402    o new pkg: aim_v23
1403     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1404       for now, keep the same surface forcing as before.
1405     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1406     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1407     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1408    o add diagnostic of surface correction term in monitor output
1409    
1410    o bulk_force and therm_seaice
1411    - Two packages:  bulk_force (Bulk forcing)
1412      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1413    - Earlier integration from Stephaine Dutkiewicz
1414      and Patrick Heimbach.
1415    - Two ifdef statements for compile time,
1416       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1417    
1418    checkpoint47
1419    differentiable version of checkpoint46n_post
1420    o bug fix in quasihydrostaticterms
1421    o * "clean" adjoint code (in terms of extensive recomputations)
1422        can now be obtained for all GMREDI options (i.e. for
1423        - GM_VISBECK_VARIABLE_K
1424        - GM_NON_UNITY_DIAGONAL
1425        - GM_EXTRA_DIAGONAL
1426        - GM_BOLUS_ADVEC )
1427      * However, wrong gradient check problem remains unsolved.
1428      * New CPP options have been introduced for different
1429        tapering schemes
1430    o external_fields_load now part of differentiation list
1431    o pressure needs multiple storing;
1432      would be nice to have store_pressure at beginning or
1433      end of forward_step, e.g. by having phiHyd global (5-dim.)
1434      (NB: pressure is needed for certain cases in find_rho,
1435      which is also invoked through convective_adjustment).
1436    o recomputations in find_rho for cases
1437     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1438    o #define ATMOSPHERIC_LOADING should be differentiable
1439    o ini_forcing shifted to begining of initialise_varia
1440    o Incorporating QNVS line search routines into MITgcm
1441      (this is separate code, and therefore not under pkg)
1442      lsopt/, optim/
1443    o Updated verification/carbon/
1444      - #define GM_VISBECK_VARIABLE_K
1445      - GM_taper_scheme    = 'ldd97'    
1446    
1447    checkpoint46n_post
1448    Merging from release1_p8:
1449    o verification/natl_box:
1450      updating new external_fields_load routine
1451    o New package: pkg/seaice
1452      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1453      The sea-ice code is based on Hibler (1979-1980).
1454      Two sea-ice dynamic solvers, ADI and LSR, are included.
1455      In addition to computing prognostic sea-ice variables and diagnosing
1456      the forcing/external data fields that drive the ocean model,
1457      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1458      The implied surface heat flux is then stored in variable
1459      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1460      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1461      non-local transport term.  Because this call precedes model
1462      thermodynamics, temperature under sea-ice may not be "exactly" at
1463      the freezing point by the time theta is dumped or time-averaged.
1464      N.B.: fairly large differences in accuracy occur across
1465            different platforms/compilers; comparison between
1466            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1467            generated output gives:
1468       T           S           U           V
1469      C D M    c        m  s        m  s        m  s        m  s
1470      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1471      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1472      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1473    
1474      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1475    o GAD:
1476      - generated new common blocks to account for call of
1477        same gad routines with differing traceridentities
1478        (needed to modify tracerIdentity indices in GAD.h)
1479      - generated separate common blocks for case useCubedSphereExchange
1480        (Department of Futurology)
1481      - parameter lists to gmredi_?transport: added tracerIdentity
1482      - added new key indices to tamc.h
1483    o external_fields_load:
1484      - added this routine to TAF list
1485      - needed to make some common blocks global and additional storing
1486        along the same lines as exf package (checkpoint_lev?_directives.h)
1487    o exf:
1488      updated external forcing package
1489      - bug fixes carried over from ecco-branch
1490        (missing OBCS_OPTIONS.h in two routines)
1491      - enable easy to use "no forcing".
1492      - added exf I/O for atmospheric loading
1493      - added exf I/O for runoff data
1494      - transfered scaling between exf <-> MITgcm to exf namelist
1495    o Adding new verification experiment global_with_exf.
1496      This verification experiment is almost identical to the
1497      global_ocean.90x40x15 experiment, except that it uses
1498      the exf (and cal) package instead of the
1499      external_fields_load routine (cf README file).
1500    
1501    checkpoint46m_post
1502    o modified testscript to return -- when there are no lines of "%MON" output
1503    o added new flag "quasiHydrostatic" for QH mode
1504      and new routine quasihydrostaticterms()
1505    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1506      New routine: mom_u_coriolis_nh()
1507    o fixed sign of non-hydrostatic metric terms in u and v equations.
1508      Depend on correct sign of gravitySign.
1509    o added work.pc* to .cvsignore in aim directories using ifc
1510    o introduced flag for controllin non-hydrostatic metric terms
1511    o removed gravitySign from PARM04
1512    o switched to g77/ifc from pgf77 in aim experiments
1513    
1514    checkpoint46l_post
1515    o made convective adjustment work with pressure coordinates:
1516     - changed the direction of k-loop in convective_adjustment.F for the
1517       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1518     - adjusted the reference pressure k-index in convective_adjustment.F
1519     - adjusted the convection condition in convect.F (in analogy to
1520       calc_ivdc.F)
1521     - convective_adjustment no longer computes anything on the halos
1522     - removed the warnings about negative salinity from find_rho.F and
1523       find_alpha.F; instead the new routine look_for_neg_salinity, called
1524       at the beginning of find_rho, find_alpha, and find_beta, does a
1525       check of the entire slice, if CPP-option
1526       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1527    checkpoint46l_pre
1528    
1529    checkpoint46k_post
1530    o fixed the verification/global_ocean.90x40x15 experiment:
1531     - new bathymetry (the world according to A., JMC, and M.)
1532     - new initial fields and forcing fields (*.bin files)
1533     - new POLY3.COEFFS (for the next release one should switch to a full
1534       equation of state: JMD95P or MDJWF)
1535     - fixed several errors and redundancies in the data file
1536     - experiment uses looped cells
1537     - added matlab directory with diagnostic scripts for plotting of output
1538    
1539    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1540     - read AIM physics parameters from a file (data.aimphys)
1541     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1542    
1543    checkpoint46j_post
1544    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1545    o move wVel computation at the end of the time step, in S/R integr_continuity
1546    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1547    o update timeave pkg for wVel diagnostic.
1548    checkpoint46j_pre
1549    
1550    checkpoint46i_post
1551    o Clean up AIM package (and keep the results unchanged):
1552      include CPP_OPTION and use IMPLICT NONE in all routines ;
1553      declare all the variables _RL ; use _d 0 for all numerical constants.
1554      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1555    
1556    checkpoint46h_post
1557    o cleaned up the use of rhoNil and rhoConst.
1558      - rhoNil should only appear in the LINEAR equation of state, everywhere
1559        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1560        and the dynamical equations are all divided by rhoConst
1561    o introduced new parameter rhoConstFresh, a reference density of fresh
1562      water, to remove the fresh water flux's dependence on rhoNil. The default
1563      value is 999.8 kg/m^3
1564    o cleanup up external_forcing.F and external_forcing_surf.F
1565      - can now be used by both OCEANIC and OCEANICP
1566    checkpoint46h_pre
1567    
1568     Added code to convert surface volume flux (fresh water) into
1569     a mass flux when using P coordinates in the ocean (OCEANICP).
1570     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1571    
1572    checkpoint46g_post
1573    o Include a new diagnostic variable phiHydLow for the ocean model
1574      - in z-coordinates, it is the bottom pressure anomaly
1575      - in p-coordinates, it is the sea surface elevation
1576      - in both cases, these variable have global drift, reflecting the mass
1577        drift in z-coordinates and the volume drift in p-coordinates
1578      - included time averaging for phiHydLow, be aware of the drift!
1579    o depth-dependent computation of Bo_surf for pressure coordinates
1580      in the ocean (buoyancyRelation='OCEANICP')
1581      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1582        Theta, Salinity, and Pressure in the parameter list. This routine is
1583        presently contained in find_rho.F. This routine does not give the
1584        correct density for 'POLY3', which would be a z-dependent reference
1585        density.
1586    o cleaned up find_rho
1587      - removed obsolete 'eqn' from the parameter list.
1588    o added two new verification experiments: gop and goz
1589      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1590    checkpoint46g_pre
1591    
1592    checkpoint46f_post
1593    o Enable tangent linear (forward mode) gradient checks:
1594      - extended active file handling to g_... files
1595      - added TANGENT_SIMULATION to theSimulationMode
1596      - extended grdchk package accordingly
1597    o added tangent linear setup in verification/carbon/code_ftl
1598    o added adjoint setup in verification/front_relax/code_ad
1599    
1600    checkpoint46e_post
1601    o Added new equation of state -> MDJWF
1602      - EOS of McDougall et al., 2002, JAOT, submitted
1603      - caveat: the equation of state is only valid for a smaller (more
1604        realistic?) range of values than JMD95P/Z and UNESCO
1605      - added masks to the calculation of pressure in store_pressure
1606      - added more check values for density in check_eos (ini_eos.F), some of
1607        the old check values are out of the range of the MDJWF-eos, so don't
1608        expect perfect matches for those
1609    checkpoint46e_pre
1610    
1611    checkpoint46d_post
1612    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1613      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1614      case of pressure coordinates. eosType='JMD95Z' in
1615      combination with buoyancyRelation='OCEANICP' now causes an error.
1616    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1617      in find_alpha/beta.
1618    checkpoint46d_pre
1619    
1620    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1621      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1622    
1623    checkpoint46c_post
1624    o Changes necessary for ocean in p-coordinates
1625     -  Added new buoyancy relation = 'OCEANICP'
1626     -  Added new parameters = gravitySign (this used to be contained inside
1627        the factor dRdZ which I added when we first switched to R coordinates).
1628     X GM/Redi is not compatible (yet)
1629     X bottom drag and no-slip need to be debugged.
1630    checkpoint46c_pre
1631    
1632    checkpoint46b_post
1633    o Added new equation of state -> JMD95Z and JMD95P
1634      - EOS of Jackett and McDougall, 1995, JAOT
1635      - moved all EOS parameters into EOS.h
1636      - new routines ini_eos.F, store_pressure.F
1637    o Added UNESCO EOS, but not recommended because it requires
1638      in-situ temperature (see JMD95)
1639    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1640      unesco.f to be used with POLY3
1641    checkpoint46b_pre
1642    
1643    checkpoint46a_post
1644    o Added (atmospheric) pressure loading
1645      - new field in FFIELDS.h, etc...
1646      - new cpp flag ATMOSPHERIC_LOADING
1647    o Changed hFacC to _hFacC in calc_phi_hyd.F
1648    o Added SHORTWAVE_HEATING to some files for consistency
1649    checkpoint46a_pre
1650    
1651    checkpoint46
1652    further merges from release1_p5
1653    o new ctrl package
1654      - adopted from ECCO environment to enable optimization
1655      - added Eliassen Palm fluxes to controls
1656    o added Eliassen Palm flux controls to gradient check package
1657    o cost package
1658      - Compatible with new ctrl package
1659      - added Eliassen Palm cost hooks
1660      - modif's of existing cost functions
1661    o Adjoint-related bug fixes in kpp:
1662      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1663      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1664    o autodiff package
1665      - flow directives:
1666        + new for S/R do_the_model_io
1667        + enhanced for S/R checkpoint
1668        + new gmredi.flow
1669      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1670        disable adcommon.h/g_common.h by default.
1671      - fixed problem for adjoint of global_max
1672    o modified verification/carbon/
1673    o New setup for adjoint of global_ocean
1674    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1675    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1676    o incorporated hooks for sponge layer code (external_forcing.F)
1677    
1678    checkpoint45d_post
1679    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1680    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1681      (affects plume_on_slope "cg2d" output)
1682    o add new parameter deltaTfreesurf for free-surface time stepping
1683    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1684  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1685  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
1686  o add new flags:  o add new flags:

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