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revision 1.38 by heimbach, Tue Apr 10 22:35:24 2001 UTC revision 1.444 by edhill, Mon Feb 7 18:37:19 2005 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 add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
7      the ability (off by default) to read the grid information using MNC
8    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
9    o do snap-shot diagnostics at the middle of the time-interval (instead of
10      at the end).
11    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
12      new test for AIM with thSIce + slab-ocean
13    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
14    o move state variable diagnostics to the beginning of the time step ;
15      (note: still needs some work specially for snap-shot diagnostics)
16      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
17    
18    checkpoint57c_post
19    o Change testing option (-ieee) to get closer agreement between g77 & ifort
20    o generate new output.txt files on faulks with g77 & the new -ieee option
21    checkpoint57c_pre
22    
23    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
24      update output.txt of exp. global_ocean.90x40x15
25    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
26      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
27    o add saltFlux(+File) forcing capability with periodicExternalForcing
28    o allow to use pkg diagnostics for GM-Redi & ThSIce output
29    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
30    o improvements for the MNC output from DIAGNOSTICS:
31      - correct handling of the unlimitied dimension
32      - all dims now have associated coordinate variables
33      - variables located at U, V, and Corner ("Z") points are now written
34        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
35        *all* data points are output
36    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
37    o added pkg/seaice/seaice_monitor.F
38    o mdsio_readfield.F can now read files visible only to master MPI process.
39    o pkg/seaice: some test code for ice-modified ocean stress
40    o exf_getffields interpolation defaults to bilinear for all scalar forcing
41      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
42      spurious negative numbers for precipitation and humidity.  Will cause
43      some small numerical differences for integrations using pkg/exf/exf_interp.F.
44    o pkg/ctrl/
45      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
46        May be enabled via doPackDiag
47      *  introduce z-scaling of
48         + gradient (doZscalePack) and
49         + control (doZscaleUnpack)
50    o pkg/mdsio/
51      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
52      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
53    
54    checkpoint57b_post
55    o simplify options in diagnostics_fill arguments (remove weird combinations)
56    o fix MNC coordinate variables so that they now contain per-face index
57      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
58      general, EXCH2 grids are only aligned to a "local" coordinate system
59    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
60    o Implement instantaneous output within pkg diagnostics:
61      setting a negative frequency in data.diagnostics produces
62     "snap-shot" output (as opposed to time-average if freq > 0)
63    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
64      NOTE: change ptracer diagnostics name: use 2 characters to work with
65            more than 9 tracers. Add also diagnostics of advect & diffus flux.
66    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
67      becomes the coordinate variable for the 'T' dimension
68    o add CF-style coordinate variables to MNC
69      - just a first cut:  numbers are meaningless on the cubesphere and
70        missing along the T axis but otherwise it works!
71    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
72    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
73    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
74      this is based directly on what the model compute, so that the content of
75      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
76    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
77    o clean up build options files for SunOS, in particular
78      - remove -traditional from xmakedepend
79      - change -xarch=v9 to -xarch=native for f77
80      - restore use of make (not gmake)
81      - add CC=gcc if using g77
82    o changes per discussion of AM, JMC, & EH3 today:
83      - move redundant "grid" variables out of "state" -- in preparation of
84        creating proper CF-style coordinate variables and in recognition
85        that any/all grid variables can be easily copied (eg. w/NCO) from
86        the grid files into any of the other NetCDF files
87      - *always* output grid variables with MDSIO (this will eventually be
88        changed)
89      - output MNC grid file if useMNC is true
90    o every instance of _END_MASTER() has been found and replaced with
91      _END_MASTER( myThid ) in order to satisfy certain picky Sun
92      preprocessors
93    o re-arrange diagnostics pkg initialisation:
94     - allow each package to extend the available diagnostics list
95     - add some checking and fix small problems (multi-threaded, ...)
96     - new S/R diagnostics_fill (replace fill_diagnostics):
97       look through the short list of active diag. (instead of the long list)
98       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
99    
100    checkpoint57a_post
101    o this set of changes restores TAMC compatibility
102      tested for global_ocean.90x40x15 adjoint on trough
103      (what a pain)
104    
105    checkpoint57a_pre
106    o some modifs in tools/build_options for sunos
107    o call ctrl_pack for ctrl at end for optimcycle=0
108    
109    checkpoint57
110    o add horizontal bi-harmonic viscosity for vertical velocity
111      - new parameter viscA4W (defaults to viscA4)
112      - affects only non-hydrostatic code
113      - to be done: no-slip lateral boundary conditions
114    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
115    o implement Implicit Vertical advection for pTracers
116    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
117      (implemented also for implicit vertical diffusion & advection)
118    o OBCS: extend application of tracer open boundary conditions
119      to a strip beyond the boundary of width Olx/Oly
120    o add call monitor to TAF set of required calls (flow directives)
121      and include in natl_box_adjoint
122    o untangle a few ifdefs related to cost, ctrl, autodiff
123      untangel a few ALLOW_ECCO_OPTIMIZATION
124    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
125      (theta2, salt2 in ecco_cost_weights)
126    
127    checkpoint56c_post
128    o OBCS as control variables
129      - update ctrl_ad_diff.list, obcs_ad_diff.list
130      - remove balance of obcs controls from default
131      - fix index bug nobcs in ctrl_init
132      - fix dummy fields filen in ctrl_pack
133      - add dummy weights for obcs
134    o lsopt: comment out fort.94 output
135    o optim:
136      - remove unnecessary header files
137      - adjusted namelists
138      - add xerbla.F to Makefile
139    o exf:
140      - multiple modifications of exf_check_range
141      - unit change in exf_init_runoff from [m/year] to [m/s]
142    o mdsio:
143      - i/o-vector change debugLevel from debLevA to debLevB
144    
145    checkpoint56b_post
146    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
147      is called from DO_THE_MODEL_IO
148      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
149      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
150      - clean up PTRACERS_WRITE_TIMEAVE a little
151    o add another verification experiment that tests both the cfc-pkg and
152      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
153      reactive tendencies treated inline with regular timestepping
154    o testreport previously did a lousy job of comparing small numbers, so
155      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
156      implemented in the little c-progam tmp_cmpnum.c which is embedded in
157      testreport.
158    o ptracers_monitor: bug fix for MPI
159    
160    checkpoint56a_post
161    o GCHEM: finish reorganizating the package
162      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
163        (introduces another 3D-array for each passive tracer, but only if
164        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
165        gchemTendency is not needed because the timestep is done separately)
166      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
167      - GCHEM is now---more or less cleanly---separate from PTRACERS
168      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
169        so clear to me how that should be done in a general way.
170    o CFC: improve formatting of output in CFC_ATMOS
171    o PTRACERS:
172      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
173        that ALL experiments with ptracers enable can be checked. This makes
174        GCHEM_MONITOR obsolete.
175      - include a runtime parameter PTRACERS_monitorFreq that defaults to
176        monitorFreq
177      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
178    o add PTRACERS (PTR0[1-5]) to testreport output
179    o exf_check_range:
180      * default changed to .TRUE.
181      * will check values for niter0 if debLevA, every timestep if debLevB
182      * STOP in exf_check_range if 'out of range'
183      * range chosen generous to allow for potential extema
184      TBD: a version with stricter range
185           permitted range would be runtime parameters
186    o GMredi:
187      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
188      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
189      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
190    o GCHEM:
191      - move call to GCHEM_FORCING_SEP, so that it is now called before
192        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
193      - introduced a useGCHEM runtime flag and applied it everywhere.
194      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
195        this flag is now only visible within GCHEM-pkg routines.
196      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
197        be replaced by a 3D array that is computed before thermodynamics; for
198        this, the tracer ID iTracer had to be included into the parameter list
199        of ptracers_forcing
200      - set up forward_step to call gchem_forcing, that will replace
201        gchem_forcing_int in ptracers_forcing
202      - cleaning up
203    o small cleaning of exch2: remove files that are also in eesupp/src
204    
205    checkpoint56
206    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
207    o mnc: cleanup "full" files--fixes out-of-memory problem
208    o ECCO-GODAE
209      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
210      * fully merged and updated from SIO code
211        windstress sign change affects
212        - exf_inscal_[u/v]stress
213        - sign of xx_tau[u/v] adjustments
214        - signs in cost_scat
215      * ctrl_get_gen: avoid update of tau[u/v] for first few days
216      * natl_box_adjoint updated and compressed
217      * 2-level checkpoint switch added
218        (tested in EXP. 1 of natl_box_adjoint)
219      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
220    o SVD
221      * first complete, non-hacked version for SVD calculations
222      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
223        performed via direct access files admtlm_vector.it????
224        (via ctrl_[un]pack)
225      * optimcycle is used for ARPACK iteration counter
226        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
227      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
228        and add linear transforms where necessary
229      * controls are initial/final SST, SSS (can be extended; need to check
230        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
231    o mdsio: filename info to both stderr, stdout
232    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
233      from sign change
234    
235    checkpoint55j_post
236    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
237      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
238    o add consistent build directories and .cvsignore files to verification
239    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
240    o make all subroutines 30 or less characters in length for certain older
241      compilers to work (a thorough search only turns up two routines in
242      pkg/ptracers)
243    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
244      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
245    
246    checkpoint55i_post
247    o change arrays for total vertical diffusivity (2.D if explicit,
248      3.D if implicit) ; each ptracer uses its own background value.
249    o added mnc/NetCDF output capability to ocn_compon_interf
250      - added bits to verification/cpl_aim+ocn so that it can run on
251        ITRDA and other clusters without the mpirun "-wd" option
252    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
253      configuration
254    o give MNC the ability to create additional files rather than
255      exceeding a specified file size limit "MNC_MAX_FILESIZE"
256      - the default is just less than 2GB which is a practical limit
257        on many systems
258    o Compute the non-local term using either KPP vertical diffusivity (=default)
259       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
260    
261    checkpoint55h_post
262    o add verification test "vermix"
263    o remove all the *_ioinc flags and replace with the single global
264      outputTypesInclusive flag
265    o allow to set a vertical profile of vertical diffusivity for T & S
266    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
267    o useMNC moved from data.mnc to data.pkg
268    
269    checkpoint55g_post
270    o Renaming carbon AD experiments to comply with testreport conventions
271    o Updating adjoint of Held-Suarez hs94.1x64x5
272    o Fixing directives for non-ECCO forward_step, after ECCO directives
273      have been fixed to avoid recomp. of do_oceanic_phys
274      Works well for global_ocean.90x40x15,
275      but recomp. issue remains for carbon
276    o Updating adjoint output for natl_box_adjoint after
277      pkg/ecco has been modified (see taga c55d_post)
278    
279    checkpoint55f_post
280    o rename to timeave_init_fixed
281    
282    checkpoint55e_post
283    o some delicate re-shuffle of store directives to avoid one
284      extra call of do_oceanic_physics
285      affects ecco_the_main_loop.F, do_oceanic_physics.F
286      checkpoint_lev1_directives.h
287    o NB: this may break global_ocean adjoint temporarily,
288      but it is clear how to fix it. Will do later, need this now.
289    
290    checkpoint55d_post
291    o ECCO specific cost function terms (up-to-date with 1x1 runs)
292    o ecco_cost_weights is modified to 1x1 runs
293    o modifs to allow observations to be read in as
294      single file or yearly files
295    o enable to read exf forcing fields as either
296      single file or yearly files (flag useExfYearlyFields)
297    checkpoint55d_pre
298    
299    o switch between 2-level and 3-level checkpointing
300    o add ability of MNC to write local and "partial" (eg. 2D slices where
301      the full 3D field is never actually stored) arrays to NetCDF files
302      with the correct (that is, the complete multi-dimensional) set of
303      array indicies
304      - used in mom_vecinv() to write the diagFreq output
305      - tested (demonstrated) in verification/aim.5l_cs
306    o further mnc-ification
307      - add verification/lab_sea to the list with mnc setups
308      - fix undefined mnc v-names in cd_code
309      - add kpp to mnc output (both snapshot and timeave)
310    o non-hydrostatic code
311      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
312        in calc_gw.F
313      - defaults to viscAh
314      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
315        friction or Leith) in non-hydrostatic mode, as long as there is
316        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
317    o pkg/cost
318      extend simple cost functions to treat time mean quantities
319      (T,U,V) via cost_accumulate_state from cost_tile
320    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
321        be 2 times larger than the minimum size the advection scheme requires.
322        now get a perfect conservation of salt in advect_cs test-exp (updated)
323    o GGL90 (Gaspar's TKE mixed layer)
324      - add horizontal diffusion of TKE, requires exchanges in
325        do_fields_blocking_exchanges, horizontal diffusivity is zero by
326        default. In OPA there is no horizontal diffusion of TKE but the
327        mixing coefficients are computed from a horizontal average of TKE of
328        6 points or so. I think that diffusion has a little more physical
329        justification.
330      - clean up ggl90_calc in the hope of reducing memory usage (this hope
331        was in vain)
332      - mask tke-variable in ggl90_init
333    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
334    o fix biharmonic diffusion on CS-grid.
335    o more obcs stuff
336      - added obcs_external_fields_load as an alternative to the EXF-pkg option
337        for reading boundary values. This routine is called from
338        obcs_prescribe_read
339      - updated obcs_check
340      - changed sponge layer relaxation parameter units for days to seconds
341      - turned off sponge layer by default
342      - changed argument list of OBCS_CALC to myTime+deltaTclock
343      - fixed about 35 bugs in obcs_external_fields_load
344    
345    checkpoint55c_post
346    o obcs stuff
347      - new runtime flags useOBCSprescribe, useOBCSbalance
348      - re-arranged obcs_calc
349      - moved exf_getobcs to obcs_prescibe_read
350        obcs_prescibe_read is called after ORLANSKI stuff
351        and independent of it (executable can contain all).
352      - updated obcs_check
353      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
354        These may be necessary only if tangential velocities are
355        prescribed at OB, not sure, needs testing.
356    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
357      which simplifies the calls and passes the ifc check-bounds test
358    
359    checkpoint55b_post
360    o add a 2D scalar, Z location, exchange_2 routine.
361    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
362      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
363      affects advect_cs results (for the wrong reason): update output.txt
364    o use a more standard discretization for biharmonic viscosity ;
365     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
366      affects results of dome set-up: update output.txt
367    o fix gad_advection.F (CubedSphere part), back to version 1.23
368    o fix bug in mom_vi_del2uv.F (CubedSphere part).
369    
370    checkpoint55a_post
371    o merged code to
372      * prescribe/read time-dependent open boundaries
373        (works in conjunction with exf, cal)
374      * sponge layer code for open boundaries
375      * each boundary N/S/E/W now has its own CPP option
376        (healthy for the adjoint)
377    
378    checkpoint55
379    o up-to-date adjoint of previous breaks
380      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
381      - global_ocean_ebm: adjoint still needs fix (TLM ok)
382      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
383      - carbon: * remove tr1-related adjoint verification
384                * add ptracer as control variable
385    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
386      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
387    
388    checkpoint54f_post
389    o in verification/carbin/ remove experiment related to
390      ALLOW_PASSIVE_TRACER (array tr1 etc)
391      code_ad/ input_ad/ results_ad
392    
393    o add two new packages
394      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
395        + subject to optimization (memory)
396      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
397        + subject to reordering (many GOTOs in the original code)
398        + so far opps is called for every (i,j) point, and then operates in
399          the vertical; one may want to reorder the scheme in order operate in
400          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
401          fields)
402    o overhaul of IO so that we now have flags for MDSIO and/or MNC
403      - all verification tests compile and run with linux_ia32_g77
404      - defaults are compatible with current input files--nothing
405        should change if you were not previously using MNC
406      - MNC output has been added in numerous places (eg. timeave)
407        but there are still a few writes not yet do-able with MNC
408        (this is in progress)
409      - flags now allow for either/or/both use of MDSIO and MNC and
410        documentation will soon follow
411      - numerous small formatting cleanups for ProTeX
412    o add version info (via BUILD_INFO.h) to MNC and stdout
413    
414    checkpoint54e_post
415    o add two new packages
416      - pp81 (Packanowski and Philander, 1981), Richardson number and
417        stratification dependent mixing
418      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
419      - these scheme operate in a similar manner as KPP (without ghat, of
420        course), however there is only one diffusivity that is used for both
421        temperature and salinity (and passive tracers)ç
422    o add offline package
423    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
424      provided by Stephanie Dutkiewicz
425    o genmake2: add ability to search for C compilers and cleanup test output
426      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
427    
428    checkpoint54d_post
429    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
430    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
431      leading to additional shift by 5 days each year of integration
432       (i.e. leading to considerable offset over the years)
433    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
434    o start with no AB and no initial filtering (staggerTimeStep):
435      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
436    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
437      (external loading & cpl import/export stay in forward_step.F)
438    o update coupling interface to work with new staggerTimeStep
439    o change MDSIO ptracers_pickup.
440    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
441    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
442    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
443    
444    checkpoint54c_post
445    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
446      this affects (truncation error) output.txt of test-exp:
447       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
448    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
449    o change Qnet to always be the net heat flux, (+upward).
450      affects (truncation error) output of natl_box exp.: updated
451    o define the max number of passive tracers in PTRACERS_SIZE.h
452    o start to test mnc routinely in exp0
453    o add sea-ice loading (sIceLoad) as a new forcing field.
454    
455    checkpoint54b_post
456    o add testreport "-j JOBS" option for parallel builds (tested and pretty
457       impressive on Altix and Opteron systems)
458    o diagnostics can now write NetCDF files through the mnc package
459    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
460    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
461    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
462      affects (truncation error) output of lab_sea & natl_box exp.: updated
463    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
464    
465    checkpoint54a_post
466    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
467    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
468    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
469    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
470      + internal_wave (shift in writing cg2d_ini_res)
471    checkpoint54a_pre
472    
473    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
474      - modified verification/lab_sea and natl_box_adjoint accordingly
475    
476    checkpoint54
477    checkpoint53g_post
478    o prepare splitting of thermodynamics: store convect.counter in common block
479    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
480      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
481    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
482    o new parameter "nShapS": allow to treat differently S from T (nShapT)
483    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
484    o restore adjointability
485    
486    checkpoint53f_post
487    o modifications that affect AIM experiment results (update output.txt):
488      - no advection of S at top interface Nr (pkg/generic_advdiff)
489      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
490    o AIM pkg:
491      - include stability function into surf.Flux derivative relative to Tsurf
492      - calculate clear-sky radiation & surface temp. change (for diagnostics)
493    
494    checkpoint53e_post
495    o merged cylindrical coord configuration
496    o added rotating_tank experiment
497    checkpoint53e_pre
498    
499    checkpoint53d_post
500    o faulks upgraded: re-generate output.txt that have changed:
501       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
502    o Added Bryan and Lewis, 1979, vertical diffusivity profile
503    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
504    o added Sadourny discretization of Coriolis
505      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
506      - re-enabled use of omega3 (useAbsVorticity)
507    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
508      vector-invariant equations
509      - note: does *NOT* yet use same variable visc. for no-slip BC's.
510    o recoded the lateral boundary conditions for non-hydrostatic w, this time
511      hopefully without new bugs
512      - still to do: biharmonic friction for non-hydrostatic w
513    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
514    o regenerated output for global_ocean_ebm (using -ieee)
515    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
516      of mom_common/
517      - simple re-arrangement of instructions within computing loop
518    checkpoint53d_pre
519    
520    checkpoint53c_post
521    o new version of coupler for AIM+thSIce and Ocean models
522     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
523     - land: change Evaporation of snow
524     - aim with thSIce: fix bug in snow-precip.
525    o changes to calc_gw.F
526     - bug fix for w^2 term near the bottom boundary
527     - (hopefully) improve the lateral slip boundary condtions for use with
528        partial/looped cells
529      - because the bug fix changes two verification experiments anyway (exp5
530        and plume on slope), change the lateral boundary condition from half slip
531        to the value of no_slip_sides
532    o ebm package wasnt quite up to the parallel task. Fixed that.
533    o Adjoint of EBM package + verification
534      * TLM OK
535      * ADM not sufficient accuracy yet (needs further testing)
536    
537    checkpoint53b_post
538    o Commiting new energy balance model to repository
539      * package is pkg/ebm
540      * verif. is verification/global_ocean_ebm
541      * references are in ebm_driver.F
542    C      * X. Wang, P. Stone and J. Marotzke, 1999:
543    C        Global thermohaline circulation. Part I:
544    C        Sensitivity to atmospheric moisture transport.
545    C        J. Climate 12(1), 71-82
546    C      * X. Wang, P. Stone and J. Marotzke, 1999:
547    C        Global thermohaline circulation. Part II:
548    C        Sensitivity with interactive transport.
549    C        J. Climate 12(1), 83-91
550    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
551    C        Destabilization of the thermohaline circulation
552    C        by atmospheric eddy transports.
553    C        J. Climate 7(12), 1870-1882
554    o Will need long integration testing.
555    checkpoint53b_pre
556    
557    o created pkg/mom_common in preparation for variable viscosity code
558    o renamed and split ini_mnc_io
559    o pkg/land: only liquid water can diffuse or run-off
560    o AIM using land: soil wetness availability account for snow
561    o added printMapIncludesZeros to EEPARMS namelist
562    
563    checkpoint53a_post
564    o restore TAMC compatiility for exf_constants.h
565      (no usage of _d in .h)
566    o Additional storing in KPP in an attempt to fix
567      TAMC problem with adjoint of KPP code.
568      (no success...)
569      Identical code works fine with TAF.
570    o Fixed verification/natl_box_adjoint experiments.
571      Initial conditions for Experiments 4 and 5 are now
572      set to "SEAICE_initialHEFF=0", which is more reasonable,
573      and hence gives results closer to that of Experiment 2.
574      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
575    
576    checkpoint53
577    o stable checkpoint with up to date adjoint
578      TLM tests only run for 1st grdchk at the moment. Its unclear if
579      this is a code problem or a problem with resetting code for g_
580      variables that is being autogenerated wrong.
581      Otherwise:
582       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
583       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
584         are both still in chaos following their security messes.
585    
586    checkpoint52n_post
587    o various build (mostly genmake2) changes including:
588      - ability to build/run more easily within Cygwin and MacOS X
589      - more complicated Makefiles with a stronger dependence on Gnu Make
590    o pkg/seaice modifications
591      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
592        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
593        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
594      - changed proxy for geostrophic velocity and updated
595        verification/lab_sea/results/* accordingly
596      - removed ADI dynamic solver from pkg/seaice
597      - replaced all occurrences of 1/CSTICE or 1/CSUICE
598        they caused a segmentation fault under certain circumstances
599      - removed unused field WATR
600    o bug fix in exf-package:
601      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
602         now reflect that.
603    o small fixes in the cal-package:
604      - set reference date to first of January for the 'model'-calendar
605      - failing of cal_CheckDate in cal_FullDate now actually results in a
606        warning
607    o small modifications in exf-package to increase flexibility:
608      - change climtempfreeze from a constant to a runtime parameter that
609        is specified in data.exf_clim (default = -1.9)
610      - introduce runtime parameter windstressmax (default = 2.0) that is
611        specified in data.exf
612    o fix in pkg/thsice:
613      - update Evap (Tsf changes) to be consistent with Latent heat flux
614      - maintain snow precipitation unchanged (even if Tsf >=0).
615     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
616    
617    checkpoint52m_post
618    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
619      this does not change any of the results, because myIter=0 in swfrac always
620      lead to jwtype=2 (the default anyway), but the call makes little sense
621      as a default
622    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
623    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
624      atmospheric model (AIM) to use it ; add a "slab ocean" component.
625    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
626    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
627    o extending useSingleCpuIO option to work with new exch2 I/O format
628      - old-style, missing-tile I/O is still accessible by defining CPP
629        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
630    o monitor package can write to NetCDF files and/or STDOUT
631    o fix re-definition bug in MNC_GRID_INIT_ALL()
632    o doc/api_reference added
633      - a framework for building an API Reference Manual using all
634        the "protex" comments embedded in the code
635      - see pkg/generic_advdiff, pkg/mnc for examples
636    o MNC:
637      - make myThid the last argument for all subroutines
638      - new default for the grid files: NO halos
639      - add useMNC and other run-time flags
640      - separate per-file-group handling of the unlimited dimension
641      - early initialization of MNC w/ flags read at the eeboot stage
642        and lookup tables set in initialize_fixed
643      - write all MNC output to a freshly-created directory
644    o thermodynamics sea-ice (thsice) is now tested with testreport.
645    o test exp. advect_cs: use the standard cs32 grid ; update output.
646    o Added functionality to grdchk:
647      pick global i,j,k position (or nearest wet) where to perform check.
648    
649    checkpoint52l_post
650    o new land formulation:
651      a) use ground enthalpy as prognostic variable to ensure exact
652         energy conservation.
653      b) account for water temperature and for latent heat of freezing
654         in all processes (rain, run-off, ground storage)
655      c) compute surface and ground temperature implicitly.
656    o aim_v23 modification for new land model:
657      a) Treat separately land / ocean / sea-ice surface fluxes
658         to allow implicit computation of land & sea-ice surface temp.
659      b) add snow precipitation.
660    checkpoint52l_pre
661    
662    o fix problem (when 1 tile is empty) in min/max monitor.
663    o fix bug in timeAve (u,vZetatave in common block)
664    o no restoring terms under ice for pkg/seaice
665    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
666    o bug fix for pkg/seaice pickups
667    o change MNC call locations and add coordinate attributes
668    o mask vorticity at the corner ; affects global_ocean.cs output
669    o fix ini_curvilinear_grid ; test CS experiments with mpi
670    o aim.5l_cs: modify sea-ice fraction input file ; update output
671    o exf: Adding simple range check routine for exf fields after read
672    
673    checkpoint52k_post
674    o removed top-level directory "diags"
675      - we migrated these functions to pkg/timeave a long time ago
676    o fixed bug introduced in pkg/monitor
677    o accuracy ctrlprec = 32 insuffient for gradient checks using
678      averaged fields (I/O via cost_averages)
679      -> use ctrl.h in active_file*.F to control I/O precision.
680    o paramter list of CALL ADTHE_MAIN_LOOP
681    o added initial do_the_model_io to ecco
682    o set all ...Freq to zero after cost_final
683      taveFreq, dumpFreq, pChkptFreq
684    o MAIN and ECCO differentiability restored
685    
686    checkpoint52j_post
687    o fix nchklev in tamc.h for global_ocean...
688    o Bringing flow and store directives up-to-date
689    o Really weird thing!
690      call do_the_model_io from the_main_loop with parameters
691      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
692      TAF places a faulty re-call of initialise_varia
693      after cost_final call which should not be there!
694    checkpoint52j_pre
695    
696    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
697      error messages
698    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
699    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
700      debug output
701    o modfied mdsio_writefield.F to handle non-global files under exch2
702    o update AIM Cubed-Sphere exp (aim.5l_cs):
703      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
704    o update AIM Equatorial Channel exp:
705      use standard aim_v23 pkg and change the SST fields to be more realistic.
706    o globalFile now works with exch2
707    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
708      mon_vort3.F to make exch2 friendly with >1 tile per cube face
709    o limit timeave output for hi-res integrations
710    
711    checkpoint52i_post
712    o removed CPP_EEOPTIONS.h from verification/*/code
713    o updated the tiling for global_ocean_pressure
714    checkpoint52i_pre
715    
716    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
717      the old pkg/aim).
718    
719    checkpoint52h_pre
720    o shortened offending lines in exch2_send_rx?.template
721    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
722    o genmake2: add build & execute test for NetCDF code
723    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
724      old grid files, moved CPP_EEMACROS.h to pkg/exch2
725    o added useSingleCPUIO flag to monitor.F and mon_out.F
726    o added temporary hack for sea-ice dynamics on the cube:
727      metric terms are ignored and it is assumed that
728      there is no sea-ice on cube faces 1, 2, 4, and 5.
729    
730    checkpoint52f_post
731    o added exch2 cube routines to pkg/exch2
732    o modified hs94.cs-32x32x5 to use it
733    o added new grid files to hs94.cs-32x32x5
734    checkpoint52f_pre
735    
736    checkpoint52e_post
737    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
738      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
739    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
740      to work with implicit vertical advection and AB ;
741    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
742    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
743     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
744    checkpoint52e_pre
745    
746    o fix bug in impldiff when Nr=1 or Nr=2.
747    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
748    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
749    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
750      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
751    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
752    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
753    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
754    
755    checkpoint52d_post
756    o re-tiled many expts to allow comparison in multi-processor mode
757      - updated output accordingly
758      - changed hs94.128x64x5 to use intial T from file rather than use the
759        random number generator
760    o add infrastructure in model routines for fizhi and gridalt packages
761    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
762    o changes to permit hi-res, cubed-sphere, configuration
763      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
764      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
765      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
766        of surface winds for the cube
767      (A verification experiment, based on global_ocean.cs32x15, but with
768       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
769       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
770       complete with example surface forcing files and matlab scripts to look
771       at the output and compare it with that of global_ocean.cs32x15.)
772    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
773       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
774       to conform to the common rule.
775    o check-in the first version of the coupler + interfaces for multi-components
776       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
777       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
778       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
779       - ocean and atmos. share the same horizontal grid (no interpolation).
780       - exchanges between component and coupler is done in forward_step
781    o new verification experiment, cpl_aim+ocn:
782       coupled ocean - AIM atmosphere on cs32 grid.
783    
784    checkpoint52d_pre
785    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
786    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
787    
788    checkpoint52c_post
789    o Fixing OPTIONS files for use of exf:
790      - ALLOW_ECCO not needed
791      - ECCO_CPPOPTIONS.h should not be included from
792        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
793        as has been the case in the past
794      - All cal/exf related options are currently set in
795        single header file. Should remain so until we
796        agree on a consistent new policy.
797    o Removed all CPP options for cal package.
798      cal has no more CPP options.
799    o modified STOREs in GAD_ADVECTION
800    o corrected key comp. for passkey
801    
802    checkpoint52b_post
803    o new version: "thsice" of thermodynamic sea-ice pkg:
804     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
805     - modify fluxes but do not change theta directly;
806     - light cleaning of bulk_force pkg (still needed with thsice).
807     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
808       + output_thsice.txt to test thsice & bulk_force pkgs.
809    o put back grid & coriolis monitor output.
810    checkpoint52b_pre
811    
812    o call "do_the_model_io" at the beginning (=> dump initial state)
813    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
814    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
815      (need info on NUMBER_OF_PTRACERS)
816    o missing PTRACERS headers in some routines
817    o default tamc.h in pkg/autodiff supposed to crash
818      to ensure proper customization
819    
820    checkpoint52a_post
821    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
822      - moved surfaceTendencyTice from pkg/seaice to main code
823      - subroutine FREEZE_SURFACE now limits only surface temperature
824        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
825        => new output.txt for global_ocean.cs32x15 & global_with_exf
826      - keep the old version of FREEZE for backward compatibility;
827        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
828      - corresponding modifs for TAF directives
829    o added surface flux output variables to TIMEAVE_STATVARS
830    o time-averaged output for pkg/ptracers
831    o fix problem with ECCO-related divided adjoint
832      snapshot file was missing some ad-variables,
833      but no warning issued by TAF
834    
835    checkpoint52a_pre
836    o some bug fixes for #undef REAL4_IS_SLOW
837    
838    checkpoint52 = ecco_c52_e35
839    o after testing adjoints of checkpoint51u_post
840    
841    checkpoint51u_post
842    o this is the post-merge tag of the ecco-branch
843      (needs another clean checkout and re-testing)
844    o various natl_box_adjoint configs and results
845      but no input fields
846    o obcs adjoint not yet merged!
847    o adding ECCO global 1x1 and 2x2 degree configs
848    o updated/extended some store directives for seaice
849    o pkg/ecco now containes ecco-specific part of cost function
850    o top level routines the_main_loop, forward_step
851      supersede those in model/src/
852      previous input data.cost now in data.ecco
853      (new namelist ecco_cost_nml)
854    o in ctrl/ cleaned some cross-dependencies and updated CPP options
855    
856    checkpoint51t_post
857    o this is the pre-merge tag of the ecco-branch
858    
859    checkpoint51s_post
860    o cleanup: removed various obsolete #define-s
861    o pkg/grdchk
862      - renamed 'ph-grd 3' to 'grad-res'
863      - merged from ecco-branch
864        (remaining bug fixes for obcs gradient checks)
865      - additional high-precision output for testreport
866        (grep for 'precision_grdchk_result')
867    
868    checkpoint51r_post
869    o cleaned up or removed CPP_OPTIONS.h files
870    o updated results for some of the tests to reflect the new
871      optfiles (-ieee: -O0 instead of -O3)
872    
873    checkpoint51q_post
874    o cd_code:
875      - moved cd_scheme.F -> cd_code_scheme.F
876      - separate read_checkpoint from cd_code_ini_vars.F
877      - separated cd_code part from write_checkpoint
878      - updated AD_SOURCE, generated .flow
879      - added CD_CODE_VARS.h to the_main_loop
880      - Moving cd_code specific store dir.s to pkg/cd_code
881    o ctrl package totally restructured
882      - pack/unpack now optional and decoupled from
883        xx_/adxx_ I/O
884      - ctrl_pack/unpack cleaned
885        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
886      - confined inclusion of AD_CONFIG.h to where necessary.
887    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
888    
889    checkpoint51p_post
890    o create initial cd_code package
891      - WARNING: the initialization of fields within packages
892        is broken because INI_FIELDS (where READ_CHECKPOINT is
893        called) is called *before* PACKAGES_INIT_VARIABLES.
894        This seems to be backwards since
895        1) its important to initially zero the entire field including
896           the "halo" region
897        2) zeroing needs to be done *before* reading pickup info
898           and the pickup call might or might not happen in any
899           particular run
900      - this needs an overhaul for R2
901    o cleanup verification/*/code/GMREDI_OPTIONS.h
902    o cleanup testreport
903    
904    checkpoint51o_post
905    o bringing AD-related verif's up to date with genmake2
906      - carbon/
907      - global_ocean.90x40x15/
908      - hs.94.1x64x5/
909      - (front_relax/ )
910    o (more) consistent directory structure for AD-related verif.'s
911    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
912    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
913    o bug fix in find_alpha.F for MDJWF:
914      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
915        change rho -> rho-rhoConst
916      - replace call find_rho to find_rhonum
917    o initialisation of rFlx extended to full array (required by TAF)
918      and shifted to thermodynamics
919    o removed PTRACERS.h in ptracers routine
920    o added surfacetendencyPtr to S/R parameter list pracers_forcing
921    o Correcting initialisations for fVerU, fVerV.
922    o helping TAF to recognize dependency on kUp for
923      fVerU, fVerV
924    o Replacing delZ by delR in pkg/ctrl/
925    checkpoint51o_pre
926    
927    o undid all of cp51 pending some cleanups and discussion
928    o added the [#include "AD_CONFIG.h"] statement to all files that need
929       it for adjoint/tl #defines
930     o re-worked the build logic in genmake2 to support AD_CONFIG.h
931     o removed tools/genmake since it no longer works
932    
933    checkpoint51n_post
934    o modifications to make FREEZE flux visible to pkg/kpp
935      - moved surfaceTendencyTice from pkg/seaice to main code
936      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
937      - subroutine FREEZE now limits only surface temperature
938        (this means new output.txt for global_ocean.90x40x15,
939         global_ocean.cs32x15, and global_with_exf)
940    o added surface flux output variables to TIMEAVE_STATVARS
941    
942    checkpoint51n_pre
943    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
944    o added [#include "AD_CONFIG.h"] to all files that use the following
945      defines:
946      - ALLOW_ADJOINT_RUN
947      - ALLOW_TANGENTLINEAR_RUN
948      - ALLOW_ECCO_OPTIMIZATION
949    
950    checkpoint51m_post
951    o incorporating changes to get TAMC/TAF working in genmake2
952      - added new TAMC/TAF targets to the Makefile
953      - various cleanups related to package handling
954      - these changes should have no impact on the forward model
955    
956    checkpoint51l_post
957    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
958     - faster algorithm for cal_addtime.F
959     - higher precision arithmetic, where needed
960     - pkg/exf *startdate variables changed from calendar date to
961       model integration time
962    
963    checkpoint51l_pre
964    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
965    o enable to apply restoring on S & T only in a latitude band.
966    o update output (external_forcing_surf modif. change truncation errors)
967       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
968    
969    checkpoint51k_post
970    o change default to: useNHMTerms=.FALSE.
971     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
972       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
973     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
974        exp1, ideal_2D_oce
975     - change data file of oceanic exp (leave the results unchanged for now)
976       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
977    o set gravitySign automatically according to the vertical coordinate used
978      (and change sign: back to "logical" value: +1 when R increases downward)
979    o added an include barrier to the default CPP_OPTIONS.h and
980      removed the #include "PACKAGES_CONFIG.h" from it
981    o fix a bug in mom_fluxform (from chk51j_post)
982    
983    checkpoint51j_post
984    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
985    o adjusted some flow directives (dynamics, thermodynamics)
986    o added cubed-sphere case to test cost function
987    o heckpoint_lev?_directives.h now include
988      pkg-specific directives, whenever those are enabled.
989    o Moving pkg-specific flow directives to corresponding pkg
990      Moving pkg-specific differentiation list to corresponding pkg
991      Moving pkg-specific checkpoint-lev storing to corresponding pkg
992      ---> conventions are
993           - pkg_ad.flow
994           - pkg_ad_diff.list
995           - pkg_ad_check_lev?_dir.h
996    
997    checkpoint51i_post
998    o merge of the branch-genmake2
999      - knowingly breaks the older genmake
1000      - automatic generation of all ALLOW_${PKG_NAME} defines
1001      - new testreport supersedes older testscript
1002    o large number of package inclusion and header cleanups
1003    checkpoint51i_pre
1004    
1005    o new output for adjoin of global ocean vector invariant
1006    o fix for checkpoint of thermodynamic seaice and bulk_force
1007    o Steph gchem various cleanups
1008    
1009    checkpoint 51h_pre
1010    o fixed some single quotes
1011    o modify gchem pkg to be more versatile
1012    o modifications to clean up dic pkg
1013    o add pkg/cfc
1014    
1015    checkpoint51g_post
1016    o provide links for ARPACK and ADM*TLM
1017    o start removing verification/vero/
1018    o update AD-related stuff
1019      (in particular some IF-statements in model/src/ routines)
1020    o adding to verification/global_ocean.90x40x15/ adjoint of
1021      vector invariant setup
1022    
1023    checkpoint51f_post
1024    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1025    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1026      of tracer Green's fucntions for ocean inversion project.
1027    
1028    checkpoint51f_pre
1029    o Added on-the-fly spatial interpolation capability
1030        "USE_EXF_INTERPOLATION" to pkg/exf.
1031      - This is a temporary Cartesian-grid hack until
1032        the super-duper ESMF coupler becomes available.
1033      - See verification/global_with_exf/README for usage example.
1034      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1035        flags and modified pkg/seaice accordingly.
1036    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1037        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1038        non-local transport term.
1039    
1040    checkpoint51e_post
1041    o pkg/mom_vecinv:
1042      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1043      - add time-ave diagnostic of vorticity advection.
1044    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1045    o atmospheric geopotential: - include water vapor effect;
1046                                - use p^kappa in p* scaling.
1047    o land pkg: read initial state from files.
1048    o AIM : add stratospheric drag in the upper level
1049    
1050    checkpoint51d_post
1051    o change function ILNBLNK (=> last non-blank char.) to return zero
1052      (instead of the string length) when the string. char is empty
1053    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1054    o modif's to restore TAMC compatibility
1055      - avoid "_d" constructs in PARAMETER declarations
1056      - avoid interrupting lines by comment lines
1057    o Use cluster local disks for purely local I/O
1058      vs. globally visible disks needed for ctrl stuff
1059      (merged from ecco-branch)
1060      - new active_file_loc... and mdsio_..._loc routines
1061      - affected packages: autodiff, ctrl, grdchk, mdsio
1062    
1063    checkpoint51c_post
1064    o introducing integer flag debugLevel
1065      - debLevZero: suppress all output
1066      - debLevA: standard
1067      - debLevB: equivalent to current debugMode=.TRUE.
1068    o introducing pathname variable mdsioLocalDir for mdsio
1069      that can be specified at runtime
1070      (relevant for cluster I/O to local disk)
1071    `
1072    >>>checkpoint51b_post
1073    adjoint of ptracers
1074    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1075    o extended state in checkpoint_lev?, etc.
1076    o alternative ctrl/cost with tr1 or ptracer
1077    o new comlev1_bibj_ptracers
1078    o new ptracers.flow
1079    o made ptracers_forcing same as external_forcing_s
1080    o added verification for adjoint with ptracers
1081      - adm. grdchk fail so far
1082      - tlm. grdchk OK
1083      - checked tapelev/comlev recomputations: OK
1084    <<<checkpoint51b_pre
1085    
1086    checkpoint51a_post
1087    o added code for biogeochemistry package
1088      - new pkgs: dic, gchem
1089      - new subroutine in ptracers
1090    o modify code for biogeo packages
1091      - in model/src and pkg/ptracers
1092    
1093    checkpoint51
1094    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1095      - autodiff, ctrl, exf, grdchk, seaice
1096      kept separate packages
1097      - cost, ecco, obcs
1098    o updating verification/internal_wave, verification/lab_sea
1099      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1100    
1101    checkpoint50i_post
1102    o Preparing next differentiable checkpoint and sync
1103      of MAIN vs. ecco-branch
1104      - 1st step: this one is differentiable
1105      - 2nd step: next(! not this) checkpoint will have updated packages
1106                  from ecco-branch)
1107    
1108    checkpoint50h_post
1109    o new package "land": provide surface BC for AIM.
1110    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1111    o AIM: use true log-P extrapolation for near surface temp (= as in
1112        F.Molteni paper) ; update aim.5l_cs output.
1113    o New variable in PARM03 for more flexible pickups
1114    o somewhat cleaned package initialisation sequence for
1115      ctrl/ cost/ ecco/ in packages_... routines
1116    
1117    checkpoint50g_post
1118    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1119      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1120      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1121        made the default because of faster convergence than ADI
1122    
1123    checkpoint50f_post
1124    o exf totally restructured
1125      - replaced all exf_set_ routines by one generic exf_set_gen.F
1126        and made sure it's still differentiable
1127      - split exf_getffields.F into new exf_bulkformulae.F
1128      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1129      - updated adjoint/makefile and relevant verif. accordingly
1130    
1131    checkpoint50f_pre
1132     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1133          + change Evap over land. (update aim.5l_cs output)
1134     o added missing .cvsignores and made uniform across expts
1135     o changed configuration of tidal_basin_2d expt
1136     o added pkg/debug functions for tracing code in fatal crashes
1137     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1138     o new fn in pkg/monitor to stop model if solution grows too big
1139     o removed lots of single quotes from comments
1140    
1141    checkpoint50e_post
1142    o make KPP work with PTRACERS
1143     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1144       nearly a copy of kpp_transport_s
1145     - there is no analogue to SurfaceTendencyS, so I have to use
1146       gPtr(of the surface layer) instead
1147    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1148    checkpoint50e_pre
1149    
1150    checkpoint50d_post
1151    o change kpp output from multiple-record state files to single-record state
1152      files analogous to write_state.F
1153    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1154      analogous to the cg2d-related output.
1155    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1156      so that writing to internal file fn (with length 512) fails.
1157    checkpoint50d_pre
1158    
1159    checkpoint50c_post
1160    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1161    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1162    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1163    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1164    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1165    
1166    checkpoint50c_pre
1167    Merging from release1_p13:
1168    o bug fix for pkg/seaice dynamic solver
1169    o Added SEAICE_initialHEFF to pkg/seaice
1170    
1171    checkpoint50b_post
1172    o store u*,v* in gU,V instead of in guNm1,gvNm1
1173    o in order to put the momForcing out of the Adams-Bashforth:
1174      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1175      to timestep.F
1176    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1177    o re-generate output for highly sensitive test-exp:
1178       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1179    
1180    checkpoint50b_pre
1181    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1182    o corrected CPP option mismatch in exf_Bulk... functions for case
1183      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1184    
1185    checkpoint50a_post
1186    o Bug fix for merging between c50 and KPP.
1187      ikey was passed from thermodynamics to kpp_calc via
1188      common block rather than being recomputed in kpp_calc,
1189      in contradiction with new key itdkey.
1190      New key ikppkey created, and tamc.h headers updated.
1191    
1192    checkpoint50
1193    - 2nd step of merge with ecco-branch:
1194      merge changes in ecco-branch back into main trunk
1195    - bug fix in find_alpha
1196    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1197    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1198    - merged some sliced AD support routines
1199    
1200    checkpoint49
1201    merged from ecco-branch:
1202    o exf:
1203      - Enable initialisation of forcing fields to constant
1204        (runtime) values.
1205      - in exf_getffields.F
1206        Reduce i-/j-loop to interior domain, discarding overlaps.
1207        That also fixes wrong TAF-key computations for key_1, key_2
1208        with bulf formulae.
1209      - exf_init.F modify #ifdef for exf_init_evap
1210      - exf_getffieldrec.F, ctrl_getrec.F
1211        The following INT-usages are not safe:
1212          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1213          fldcount = int(fldsecs/fldperiod) + 1
1214        and were modified.
1215    o autodiff: checkpoint_lev...
1216      - updated storing for bulk formulae (some arrays were missing)
1217      - added state for seaice package
1218      - synchronized with main branch
1219    o DIVA:
1220      Modif.s in
1221      - the_main_loop.F
1222      - the_model_main.F
1223      and added cost_final_restore.F cost_final_store.F
1224      o With these changes, it is possible to fully separate
1225        the first forward run to compute the cost function (mdthe_main_loop)
1226        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1227        into separate model executions.
1228        This enables better tuning of DIVA to given queue sizes.
1229      o Loss of cost function value in consecutive DIVA runs is
1230        fixed by storing to 'costfinal' file.
1231      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1232        beginning/end of adjoint integration is accounted for.
1233      The current changes apply to TAF-1.4.26.
1234      TAF has one remaining bug, requiring one manual change
1235      (see MITgcm manual).
1236    o cal: synchronized between MAIN and ecco-branch
1237    
1238    checkpoint48i_post
1239    o Changes to restore differentiability of code w.r.t. previous tag
1240      (mostly adding new routines to make list and replacing
1241      pressure by totPhiHyd).
1242    o Updated and merged grdchk package
1243      - has both ADM and TLM checks
1244      - works for single- and multi-proc.
1245      - output cleaned
1246      - worked successfully for parallel DIVA
1247    o genmake:
1248      - Adding -platform=SP4
1249      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1250    o Modif. for DIVA:
1251      ctrl_unpack should not be called in intermediate DIVA interval.
1252      (similar thing would apply for active files such as
1253      tbar, sbar, psbar, which should not be reinitialised;
1254      only relevant for ecco-branch)
1255    
1256    checkpoint48h_post
1257    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1258    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1259    o Added SEAICE_initialHEFF to pkg/seaice
1260    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1261    
1262    checkpoint48g_post
1263    --- EOS:
1264    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1265      store total Potential in totPhyHyd for diagnostics & EOS.
1266    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1267    --- Pressure/geopotential gradient:
1268    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1269    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1270      ( changes results of global_ocean_pressure )
1271    o NLFS + z-coord.: add eta*Rho' contribution.
1272    o accurate phiHyd when using interface-W at the middle between 2 centers
1273     ( changes results of ideal_2D_oce )
1274    o includes r* 2nd term in potential gradient.
1275    
1276    checkpoint48f_post
1277    Merging from release1_p12:
1278    o Modifications for using pkg/exf with pkg/seaice
1279      - improved description of the various forcing configurations
1280      - added basic radiation bulk formulae to pkg/exf
1281      - units/sign fix for evap computation in exf_getffields.F
1282      - updated verification/global_with_exf/results/output.txt
1283    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1284      (SBO) core products, including oceanic mass, center-of-mass,
1285      angular, and bottom pressure (see pkg/sbo/README.sbo).
1286    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1287      to avoid negative values in shallow regions.
1288      - updated verification/natl_box/results/output.txt
1289      - updated verification/lab_sea/results/output.txt
1290    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1291    o Added useSingleCpuIO option (see PARAMS.h).
1292    o Updated useSingleCpuIO option in mdsio_writefield.F to
1293      work with multi-field files, e.g., for single-file pickup.
1294    o pkg/seaice:
1295      - bug fix in growth.F: QNET for no shortwave case
1296      - added HeffFile for specifying initial sea-ice thickness
1297      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1298    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1299      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1300    o pkg/seaice:
1301      - adjoint-friendly modifications
1302      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1303    
1304    checkpoint48e_post
1305    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1306    o dynamics: change definition of computational domain & adapt mom_fluxform
1307      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1308    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1309        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1310        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1311        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1312        inverted_barometer solid-body.cs-32x32x1
1313      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1314    
1315    checkpoint48d_post
1316    o in preparation for r*:
1317     a) use pre-computed gradient of hydrostatic potential:
1318        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1319     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1320        => affects results of glob_oce_pressure (different truncation error)  
1321      update output.txt of ideal_2D_oce & global_ocean_pressure
1322    
1323    checkpoint48d_pre
1324    o in preparation for r*:
1325      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1326      pass the 2 comp. of the grad. as arguments to momentum S/R.
1327      but for the moment, only used if it does not change the results.
1328    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1329    
1330    checkpoint48c_post
1331    Modifications in treatment of initial flux forcing controls
1332    to avoid extra storing of flux fields.
1333    
1334    checkpoint48c_pre
1335    o Added tidal_basin_2d experiment (currently 1D!)
1336    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1337    
1338    checkpoint48b_post
1339    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1340     (modification to pressure gradient not yet implemented)
1341    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1342      (for U & V) that are used for vertical advection of momentum.
1343    
1344    checkpoint48a_post
1345    o In preparation for r*, use temp. array to compute vertical transport
1346       in flux-form momentum pkg. => change results of few test-exp.
1347      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1348                        lab_sea, natl_box & plume_on_slope
1349    
1350    checkpoint48
1351    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1352    
1353    checkpoint47j_post
1354    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1355    o moved adexch from forward_step to addummy_in_stepping
1356    o added exch in ctrl_map_...
1357    o aveFreq.=0. at end of cost_final to avoid overwrite in
1358      reverse checkpointing loop
1359    o Yet more changes in gmredi:
1360      * adgmredi_calc_tensor
1361        avoiding all recomputation of gmredi_slope_limit
1362      * adgmredi_x/y/rtransport
1363        added flag for excessive storing to avoid recomp. of
1364        u/v/rtans, dTdx/y/z
1365        -> this is not really necessary and very memory-consuming
1366      * adgmredi_slope_psi:
1367        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1368      * gmredi_slope_limit
1369        re-activated full calculation of taperfct for case 'ac02'
1370    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1371    
1372    checkpoint47i_post
1373    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1374    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1375      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1376    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1377    o gmredi: fix few bugs.
1378    
1379    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1380    This will be a good checkpoint to plug into the ecco-branch.
1381    o few modif.'s to get latest version adjointed
1382      (mainly kick out code in ini_linear_phisurf)
1383    o modif's to run adjoint with exactConserv
1384    o case GM_BOLUS_ADVEC should be cleaned
1385      S/R gmredi_slope_psi should be cleaned
1386    o verification/carbon now has exactConserv=.TRUE.
1387    
1388    checkpoint47g_post
1389    o time-average AIM output: becomes independent from statvars time-average
1390      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1391    o After TAF bug fix:
1392      Tested adjoint of gmredi package.
1393      Tests were done with checkpoint47 rather than with latest
1394      checkpoint47f_post since the latter is broken for the adjoint
1395      verification/carbon/ contains both ADM and TLM gradient checks.
1396    Here they are, before they get changed/lost/stolen.
1397    Mostly modif.'s to fix numerical sensitivities.
1398    Gradient checks OK for
1399    - GM_taper_scheme:
1400      * clipping
1401      * ac02
1402      * linear
1403      * glw91
1404      * dm95
1405      * ldd97
1406    - GMREDI_OPTIONS:
1407      * GM_VISBECK_VARIABLE_K
1408      * GM_NON_UNITY_DIAGONAL
1409      * GM_EXTRA_DIAGONAL
1410      * GM_BOLUS_ADVEC
1411    in conjunction with data.gmredi parameters to be checked in
1412    in a few minutes under verification/carbon/code/
1413    
1414    checkpoint47f_post
1415    Merging from release1_p10:
1416    o modifications for using pkg/exf with pkg/seaice
1417      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1418        and SEAICE_EXTERNAL_FLUXES
1419      - pkg/exf CPP options EXF_READ_EVAP and
1420        EXF_NO_BULK_COMPUTATIONS
1421      - usage examples are Experiments 8 and 9 in
1422        verification/lab_sea/README
1423      - verification/lab_sea default experiment now uses
1424        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1425    
1426    checkpoint47e_post
1427    o created a tag prior to creating a branch
1428    
1429    checkpoint47d_post
1430    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1431      at the bottom boundary had an erroneous half slip boundary condition
1432    o added bottom drag and no slip boundary condition capabilities to
1433      oceanic pressure coordinates code
1434    o added new verification experiment global_ocean_pressure, this experiment is
1435      also described in the tutorial section of the manual
1436    checkpoint47d_pre
1437    
1438    checkpoint47c_post
1439    o Added a verification experiment for a global cubed-sphere ocean run
1440      -  verification/global_ocean.cubed32x32x30
1441      -  uses pkg/therm_seaice and pkg/bulk_forcing
1442    
1443    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1444    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1445      when using P-coordinate; only implemented for atmospheric config.
1446    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1447      NOTES: requires option NONLIN_FRSURF to be "#define".
1448    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1449    
1450    checkpoint47b_post
1451    Merging from release1_p9:
1452    o pkg/seaice
1453      - removed GOTO's and added taf directives
1454      - double precision constants to reduce the g77 (Linux)
1455        to F77 (SGI) differences reported in release1_p8
1456    o tools/genmake
1457      - added SGI options
1458    o verification/testscript
1459      - updated to that of checkpoint47a_post
1460    o verification/global_ocean.90x40x15/input/eedata
1461      - modified for SGI f77 compatibility
1462    o verification/lab_sea
1463      - added description of sea-ice model
1464      - added missing matlab routines
1465      - added test of thermodynamics parallelization
1466    
1467    checkpoint47a_post
1468    o new pkg: aim_v23
1469     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1470       for now, keep the same surface forcing as before.
1471     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1472     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1473     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1474    o add diagnostic of surface correction term in monitor output
1475    
1476    o bulk_force and therm_seaice
1477    - Two packages:  bulk_force (Bulk forcing)
1478      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1479    - Earlier integration from Stephaine Dutkiewicz
1480      and Patrick Heimbach.
1481    - Two ifdef statements for compile time,
1482       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1483    
1484    checkpoint47
1485    differentiable version of checkpoint46n_post
1486    o bug fix in quasihydrostaticterms
1487    o * "clean" adjoint code (in terms of extensive recomputations)
1488        can now be obtained for all GMREDI options (i.e. for
1489        - GM_VISBECK_VARIABLE_K
1490        - GM_NON_UNITY_DIAGONAL
1491        - GM_EXTRA_DIAGONAL
1492        - GM_BOLUS_ADVEC )
1493      * However, wrong gradient check problem remains unsolved.
1494      * New CPP options have been introduced for different
1495        tapering schemes
1496    o external_fields_load now part of differentiation list
1497    o pressure needs multiple storing;
1498      would be nice to have store_pressure at beginning or
1499      end of forward_step, e.g. by having phiHyd global (5-dim.)
1500      (NB: pressure is needed for certain cases in find_rho,
1501      which is also invoked through convective_adjustment).
1502    o recomputations in find_rho for cases
1503     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1504    o #define ATMOSPHERIC_LOADING should be differentiable
1505    o ini_forcing shifted to begining of initialise_varia
1506    o Incorporating QNVS line search routines into MITgcm
1507      (this is separate code, and therefore not under pkg)
1508      lsopt/, optim/
1509    o Updated verification/carbon/
1510      - #define GM_VISBECK_VARIABLE_K
1511      - GM_taper_scheme    = 'ldd97'    
1512    
1513    checkpoint46n_post
1514    Merging from release1_p8:
1515    o verification/natl_box:
1516      updating new external_fields_load routine
1517    o New package: pkg/seaice
1518      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1519      The sea-ice code is based on Hibler (1979-1980).
1520      Two sea-ice dynamic solvers, ADI and LSR, are included.
1521      In addition to computing prognostic sea-ice variables and diagnosing
1522      the forcing/external data fields that drive the ocean model,
1523      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1524      The implied surface heat flux is then stored in variable
1525      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1526      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1527      non-local transport term.  Because this call precedes model
1528      thermodynamics, temperature under sea-ice may not be "exactly" at
1529      the freezing point by the time theta is dumped or time-averaged.
1530      N.B.: fairly large differences in accuracy occur across
1531            different platforms/compilers; comparison between
1532            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1533            generated output gives:
1534       T           S           U           V
1535      C D M    c        m  s        m  s        m  s        m  s
1536      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1537      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1538      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1539    
1540      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1541    o GAD:
1542      - generated new common blocks to account for call of
1543        same gad routines with differing traceridentities
1544        (needed to modify tracerIdentity indices in GAD.h)
1545      - generated separate common blocks for case useCubedSphereExchange
1546        (Department of Futurology)
1547      - parameter lists to gmredi_?transport: added tracerIdentity
1548      - added new key indices to tamc.h
1549    o external_fields_load:
1550      - added this routine to TAF list
1551      - needed to make some common blocks global and additional storing
1552        along the same lines as exf package (checkpoint_lev?_directives.h)
1553    o exf:
1554      updated external forcing package
1555      - bug fixes carried over from ecco-branch
1556        (missing OBCS_OPTIONS.h in two routines)
1557      - enable easy to use "no forcing".
1558      - added exf I/O for atmospheric loading
1559      - added exf I/O for runoff data
1560      - transfered scaling between exf <-> MITgcm to exf namelist
1561    o Adding new verification experiment global_with_exf.
1562      This verification experiment is almost identical to the
1563      global_ocean.90x40x15 experiment, except that it uses
1564      the exf (and cal) package instead of the
1565      external_fields_load routine (cf README file).
1566    
1567    checkpoint46m_post
1568    o modified testscript to return -- when there are no lines of "%MON" output
1569    o added new flag "quasiHydrostatic" for QH mode
1570      and new routine quasihydrostaticterms()
1571    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1572      New routine: mom_u_coriolis_nh()
1573    o fixed sign of non-hydrostatic metric terms in u and v equations.
1574      Depend on correct sign of gravitySign.
1575    o added work.pc* to .cvsignore in aim directories using ifc
1576    o introduced flag for controllin non-hydrostatic metric terms
1577    o removed gravitySign from PARM04
1578    o switched to g77/ifc from pgf77 in aim experiments
1579    
1580    checkpoint46l_post
1581    o made convective adjustment work with pressure coordinates:
1582     - changed the direction of k-loop in convective_adjustment.F for the
1583       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1584     - adjusted the reference pressure k-index in convective_adjustment.F
1585     - adjusted the convection condition in convect.F (in analogy to
1586       calc_ivdc.F)
1587     - convective_adjustment no longer computes anything on the halos
1588     - removed the warnings about negative salinity from find_rho.F and
1589       find_alpha.F; instead the new routine look_for_neg_salinity, called
1590       at the beginning of find_rho, find_alpha, and find_beta, does a
1591       check of the entire slice, if CPP-option
1592       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1593    checkpoint46l_pre
1594    
1595    checkpoint46k_post
1596    o fixed the verification/global_ocean.90x40x15 experiment:
1597     - new bathymetry (the world according to A., JMC, and M.)
1598     - new initial fields and forcing fields (*.bin files)
1599     - new POLY3.COEFFS (for the next release one should switch to a full
1600       equation of state: JMD95P or MDJWF)
1601     - fixed several errors and redundancies in the data file
1602     - experiment uses looped cells
1603     - added matlab directory with diagnostic scripts for plotting of output
1604    
1605    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1606     - read AIM physics parameters from a file (data.aimphys)
1607     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1608    
1609    checkpoint46j_post
1610    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1611    o move wVel computation at the end of the time step, in S/R integr_continuity
1612    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1613    o update timeave pkg for wVel diagnostic.
1614    checkpoint46j_pre
1615    
1616    checkpoint46i_post
1617    o Clean up AIM package (and keep the results unchanged):
1618      include CPP_OPTION and use IMPLICT NONE in all routines ;
1619      declare all the variables _RL ; use _d 0 for all numerical constants.
1620      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1621    
1622    checkpoint46h_post
1623    o cleaned up the use of rhoNil and rhoConst.
1624      - rhoNil should only appear in the LINEAR equation of state, everywhere
1625        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1626        and the dynamical equations are all divided by rhoConst
1627    o introduced new parameter rhoConstFresh, a reference density of fresh
1628      water, to remove the fresh water flux's dependence on rhoNil. The default
1629      value is 999.8 kg/m^3
1630    o cleanup up external_forcing.F and external_forcing_surf.F
1631      - can now be used by both OCEANIC and OCEANICP
1632    checkpoint46h_pre
1633    
1634     Added code to convert surface volume flux (fresh water) into
1635     a mass flux when using P coordinates in the ocean (OCEANICP).
1636     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1637    
1638    checkpoint46g_post
1639    o Include a new diagnostic variable phiHydLow for the ocean model
1640      - in z-coordinates, it is the bottom pressure anomaly
1641      - in p-coordinates, it is the sea surface elevation
1642      - in both cases, these variable have global drift, reflecting the mass
1643        drift in z-coordinates and the volume drift in p-coordinates
1644      - included time averaging for phiHydLow, be aware of the drift!
1645    o depth-dependent computation of Bo_surf for pressure coordinates
1646      in the ocean (buoyancyRelation='OCEANICP')
1647      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1648        Theta, Salinity, and Pressure in the parameter list. This routine is
1649        presently contained in find_rho.F. This routine does not give the
1650        correct density for 'POLY3', which would be a z-dependent reference
1651        density.
1652    o cleaned up find_rho
1653      - removed obsolete 'eqn' from the parameter list.
1654    o added two new verification experiments: gop and goz
1655      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1656    checkpoint46g_pre
1657    
1658    checkpoint46f_post
1659    o Enable tangent linear (forward mode) gradient checks:
1660      - extended active file handling to g_... files
1661      - added TANGENT_SIMULATION to theSimulationMode
1662      - extended grdchk package accordingly
1663    o added tangent linear setup in verification/carbon/code_ftl
1664    o added adjoint setup in verification/front_relax/code_ad
1665    
1666    checkpoint46e_post
1667    o Added new equation of state -> MDJWF
1668      - EOS of McDougall et al., 2002, JAOT, submitted
1669      - caveat: the equation of state is only valid for a smaller (more
1670        realistic?) range of values than JMD95P/Z and UNESCO
1671      - added masks to the calculation of pressure in store_pressure
1672      - added more check values for density in check_eos (ini_eos.F), some of
1673        the old check values are out of the range of the MDJWF-eos, so don't
1674        expect perfect matches for those
1675    checkpoint46e_pre
1676    
1677    checkpoint46d_post
1678    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1679      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1680      case of pressure coordinates. eosType='JMD95Z' in
1681      combination with buoyancyRelation='OCEANICP' now causes an error.
1682    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1683      in find_alpha/beta.
1684    checkpoint46d_pre
1685    
1686    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1687      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1688    
1689    checkpoint46c_post
1690    o Changes necessary for ocean in p-coordinates
1691     -  Added new buoyancy relation = 'OCEANICP'
1692     -  Added new parameters = gravitySign (this used to be contained inside
1693        the factor dRdZ which I added when we first switched to R coordinates).
1694     X GM/Redi is not compatible (yet)
1695     X bottom drag and no-slip need to be debugged.
1696    checkpoint46c_pre
1697    
1698    checkpoint46b_post
1699    o Added new equation of state -> JMD95Z and JMD95P
1700      - EOS of Jackett and McDougall, 1995, JAOT
1701      - moved all EOS parameters into EOS.h
1702      - new routines ini_eos.F, store_pressure.F
1703    o Added UNESCO EOS, but not recommended because it requires
1704      in-situ temperature (see JMD95)
1705    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1706      unesco.f to be used with POLY3
1707    checkpoint46b_pre
1708    
1709    checkpoint46a_post
1710    o Added (atmospheric) pressure loading
1711      - new field in FFIELDS.h, etc...
1712      - new cpp flag ATMOSPHERIC_LOADING
1713    o Changed hFacC to _hFacC in calc_phi_hyd.F
1714    o Added SHORTWAVE_HEATING to some files for consistency
1715    checkpoint46a_pre
1716    
1717    checkpoint46
1718    further merges from release1_p5
1719    o new ctrl package
1720      - adopted from ECCO environment to enable optimization
1721      - added Eliassen Palm fluxes to controls
1722    o added Eliassen Palm flux controls to gradient check package
1723    o cost package
1724      - Compatible with new ctrl package
1725      - added Eliassen Palm cost hooks
1726      - modif's of existing cost functions
1727    o Adjoint-related bug fixes in kpp:
1728      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1729      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1730    o autodiff package
1731      - flow directives:
1732        + new for S/R do_the_model_io
1733        + enhanced for S/R checkpoint
1734        + new gmredi.flow
1735      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1736        disable adcommon.h/g_common.h by default.
1737      - fixed problem for adjoint of global_max
1738    o modified verification/carbon/
1739    o New setup for adjoint of global_ocean
1740    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1741    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1742    o incorporated hooks for sponge layer code (external_forcing.F)
1743    
1744    checkpoint45d_post
1745    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1746    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1747      (affects plume_on_slope "cg2d" output)
1748    o add new parameter deltaTfreesurf for free-surface time stepping
1749    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1750    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1751    o change phiMin in exp1 (to agree with documentation)
1752    o add new flags:
1753     - T,S forcing inside/outside Adams-Bashforth
1754     - turn off temp,salt advection and/or forcing
1755     - for each tracer, define internal flag for multiDimAdvection & A-B
1756    o monitor: change definition of KE to check conservation of Energy
1757    
1758    checkpoint45c_post
1759    o Removed f90 comments ("!")
1760    o Modified initialisations to enable exf package for MITgcm
1761      (without invoking ECCO_PACKAGE).
1762    o modifications to gradient check package (Martin Losch)
1763      - enable centered differences
1764      - modified format of standard output
1765    
1766    checkpoint45b_post
1767    o cleaned exchange calls in cg2d
1768    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1769    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1770      to configure barotropic setup (Martin Losch)
1771    o moved some initialisations within bi,bj loop in dynamics
1772      (TAF flow dependency)
1773    o in initialise_varia, moved call packages_init_variables
1774      before convective_adjustment_init
1775      (corresponding adjustment of TAF tape initialisation).
1776    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1777    
1778    checkpoint45a_post
1779    o compute Rho over the whole domain (extend iMin,jMin indices)
1780    o specific exchange for X-slice domain (case Ny=1)
1781    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1782    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1783    
1784    checkpoint44h_post = checkpoint45
1785    o Fix to restore differentiability:
1786      place at which packages_init_variables is called in
1787      initialise_varia is crucial for reverse control flow.
1788    o modifications in GMRedi to enable stable adjoint
1789      (corresponding modif's in thermodynamics, dynamics)
1790    o added missing hook for sponge layer code in external_forcing
1791    o modified test cost functions
1792    o storing in gad_advection (plus removal of write(0,*)!
1793    o missing headers TR1.h added in convective_adjustment routines
1794    o errorMessageUnit set non-equal zero in eeboot
1795      (conflict on some platforms, e.g. IBM SP3)
1796    o modified carbon verif.
1797    
1798    checkpoint44h_pre
1799    o vertical grid option: allow to put the Interface at the middle between
1800      2 cell-centers ; replace delZ in pkg/kpp by drF.
1801    o GM Advective form: Tracers are advected using the residual transport (=
1802      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1803    
1804    checkpoint44g_post
1805    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1806      results) ; ifdef missing in thermodynamics.F
1807    
1808    checkpoint44f_pre,checkpoint44f_post
1809    o added PTRACERS package
1810      This allows an arbitrary number of passive tracers to be integrated
1811      forward simultaneously with the dynamicaly model.
1812      + Implemented so far:
1813        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1814        - I/O and checkpointing
1815        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1816      + Not implemented so far:
1817        - KPP
1818        - OBCS
1819      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1820        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1821        line in data.pkg.
1822      + This package is disabled by default since it increases storage.
1823    
1824    
1825    o testscript: added -cleanup option
1826    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1827                 b) enable to filter 2D fields.
1828    
1829    checkpoint44e_pre,post
1830    o re-wrote convective adjustment to use pre-calculated weights
1831      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1832      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1833      Original calls to convect() still in place.
1834    
1835    chkpt44d_pre,post
1836    o added missing EXCLUDE_MONITOR flags
1837    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1838      (incompatible typ in MIN/MAX expressions caused problems
1839      on IBM SP3)
1840    o in genmake added variable MAKEDEPEND
1841      plus resetting for case SunOS
1842    o added timer_stats.c routine for IBM SP3
1843    o removed variables in dynamics
1844    !!! I forgot to create tag chkpt44d_pre !!!
1845    !!! But chkpt44d_pre = chkpt44c_post    !!!
1846    
1847    o real fresh water flux implemented with non-linear free-surface.
1848    
1849    chkpt44c_pre,post
1850    o few fix (mask in shap_s2, EmPmR in external_field_load,
1851      USE_NATURAL_BCS in solve_for_P);
1852    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1853    
1854    checkpoint44b_pre/_post
1855    o merge of relevant stuff from the ecco-branch:
1856      - genmake: removed $S64 overwrite for case SunOS
1857      - pkg/exf: update and corrections for field swapping and obcs
1858      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1859                  harmonized between ECCO and MITgcm
1860      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1861                      updated checkpointing_lev... lists for obcs
1862      - model/src: minor changes in forward_step, plot_field
1863                   added directive for divided adjoint in the_main_loop
1864      - pkg/mdsio: added mdsio_gl_slice
1865    
1866    o check parameters & config (chkpt44a_pre,post)
1867    o OBC and NonLin_FrSurf.
1868    
1869    checkpoint44
1870    o fix bug in mom_vi_del2uv
1871    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1872    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1873    o update AIM experiments (NCEP input files)
1874    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1875    o added some stuff for AD
1876    
1877    checkpoint43
1878    o added two new advection tests
1879    o added global 4x4 degree ocean test
1880    o added test of H&S94 with free surface on cube
1881    o some final mods for gradient check, adjoint,...
1882    
1883    checkpoint42
1884      Fixed AD-related problems:
1885    o Store directives up-to-date with re-arranged Adams-Bashforth
1886      (mainly thermodynamics.F)
1887    o New store directives for multi-dim. advection schemes
1888      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1889      * new common block and key passkey
1890      (mainly gad_advection.F)
1891    o Modified store directives for split of dynamics/thermodynamics
1892      for the case ALLOW_KPP
1893    o Cleaned argument list for timestep_tracer.F
1894    
1895    checkpoint41
1896    o re-formatted/added comments in prologues of key subroutines
1897      to work with protex
1898    
1899    checkpoint40
1900    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1901    o added FLT (floats) package from Arne along with demo. experiment
1902    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1903      implementation of forward-in-time forcing terms
1904    o more mods for non-linear free-surface including new variable
1905    o modified multi-dim method to work on cube
1906    o bug fix in KPP (from DM)
1907    
1908    checkpoint40pre9
1909    o added DST advection schemes
1910    o fix MPI bug on SGI's
1911    o modifications for non-linear free-surface
1912    o fixed conditionals for fixed flow/passive tracer only mode
1913    o added tension/strain form of stress tensor
1914    o changes to commenting of arguments for TAF/TAMC
1915    o added/updated many matlab scripts
1916    o added multi-dimensional advection method for tracers
1917      
1918    checkpoint40pre8
1919    o new package rw/
1920      Added method for dumping intermediate local arrays:
1921      mdsio_writetile - same as mdsio_writefield except works from inside
1922                        bi,bj loop
1923      mdsio_writelocal - same as mdsio_writetile except works for local
1924                         arrays
1925      write_local_r? - higher-level wrapper for mdsio_writelocal
1926      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1927      Example given at end of mom_vecinv.F that dumps some local arrays.
1928    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1929      control flux-form versus vector invariant code.
1930      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1931      or genmake -DISABLE ...
1932    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1933      (additional storing is now needed for case vecinv;
1934      currently nothing implemented to switch this storing off
1935      in case fluxform is used since no CPP flag available).
1936    
1937    checkpoint40pre7
1938    o bug fix in dynamics.F
1939      calc_viscosity called before k=1,Nr loop.
1940    o added some #ifdef's ALLOW_PASSIVE_TRACER
1941    o cleaned initialisations in ctrl_map_ini
1942      related to TAF
1943    
1944    checkpoint40pre6
1945    o split dynamics into thermodynamics & dynamics
1946    o corresponding split of calc_diffusivity into
1947      calc_diffusivity, calc_viscosity
1948      (kpp_calc_diff, kpp_calc_visc).
1949    o Added diffkr, kapgm to control variables
1950    o bug fix in gmredi_slope_limit for ldd97
1951    
1952    checkpoint40pre5
1953    o proper initialization of Adams-Bashforth time stepping
1954      + uses forward step for very first step of model (iter=0)
1955    o re-generated *all* output since almost all output is modified by this
1956      change (sorry but we've been putting this one off for about 2 years)
1957      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1958        *not* regenerated since they are already out of date and I don't
1959        want to create the impression that they are suddenly working.
1960    o removed KAP stuff for DEC's
1961    o modified/added many .cvsignore files in */code and */input
1962    o added new expt "solid-body.cs-32x32x1"
1963      + this uses an alternative form of ini_curvilinear_grid.F which
1964        is not necessarily any better than the current one...
1965    
1966    checkpoint40pre4
1967    o added re-initialisations of utrans,vtrans,rtrans in
1968      calc_common_factors which are crucial for TAF.
1969    o extended iMin,jMin range for calc_common_factors,
1970      calc_diffusivity
1971    o added option ALLOW_PASSIVE_TRACER
1972    o a few minor updates and fixes
1973    
1974    checkpoint40pre3
1975    o created calc_gtr1.F for gad package
1976    o split the_main_loop and re-introduced forward_step
1977    o some recomputations of nIter0 for TAMC
1978    
1979    checkpoint40pre2
1980    o Updated to latest branch of AJA, JMC
1981    o Added gradient check package
1982    o Added routines for passive tracer handling
1983    o Added carbon sequestration sensitivity experiment
1984    
1985    checkpoint39
1986     o Modifications and fixes to support TAMC
1987       (mainly missing or wrong directives)
1988     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1989       in addummy_in_stepping
1990     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1991     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1992     o Included following packages:
1993       cal: calendar
1994       exf: external forcing
1995       ecco: essential routines to control use of cal, exf
1996             (NB: this is not the full ECCO environment)
1997     o disabled some packages by default in genmake
1998    
1999  checkpoint38  checkpoint38
2000   o see notes_c37_adj.txt   o see notes_c37_adj.txt
2001   o corrected wrong layer index in external_forcing_t   o corrected wrong layer index in external_forcing_t

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