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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.445 by jmc, Mon Feb 7 19:42:04 2005 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o add 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 lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
9    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
10    o do snap-shot diagnostics at the middle of the time-interval (instead of
11      at the end).
12    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
13      new test for AIM with thSIce + slab-ocean
14    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
15    o move state variable diagnostics to the beginning of the time step ;
16      (note: still needs some work specially for snap-shot diagnostics)
17      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
18    
19    checkpoint57c_post
20    o Change testing option (-ieee) to get closer agreement between g77 & ifort
21    o generate new output.txt files on faulks with g77 & the new -ieee option
22    checkpoint57c_pre
23    
24    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
25      update output.txt of exp. global_ocean.90x40x15
26    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
27      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
28    o add saltFlux(+File) forcing capability with periodicExternalForcing
29    o allow to use pkg diagnostics for GM-Redi & ThSIce output
30    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
31    o improvements for the MNC output from DIAGNOSTICS:
32      - correct handling of the unlimitied dimension
33      - all dims now have associated coordinate variables
34      - variables located at U, V, and Corner ("Z") points are now written
35        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
36        *all* data points are output
37    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
38    o added pkg/seaice/seaice_monitor.F
39    o mdsio_readfield.F can now read files visible only to master MPI process.
40    o pkg/seaice: some test code for ice-modified ocean stress
41    o exf_getffields interpolation defaults to bilinear for all scalar forcing
42      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
43      spurious negative numbers for precipitation and humidity.  Will cause
44      some small numerical differences for integrations using pkg/exf/exf_interp.F.
45    o pkg/ctrl/
46      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
47        May be enabled via doPackDiag
48      *  introduce z-scaling of
49         + gradient (doZscalePack) and
50         + control (doZscaleUnpack)
51    o pkg/mdsio/
52      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
53      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
54    
55    checkpoint57b_post
56    o simplify options in diagnostics_fill arguments (remove weird combinations)
57    o fix MNC coordinate variables so that they now contain per-face index
58      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
59      general, EXCH2 grids are only aligned to a "local" coordinate system
60    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
61    o Implement instantaneous output within pkg diagnostics:
62      setting a negative frequency in data.diagnostics produces
63     "snap-shot" output (as opposed to time-average if freq > 0)
64    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
65      NOTE: change ptracer diagnostics name: use 2 characters to work with
66            more than 9 tracers. Add also diagnostics of advect & diffus flux.
67    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
68      becomes the coordinate variable for the 'T' dimension
69    o add CF-style coordinate variables to MNC
70      - just a first cut:  numbers are meaningless on the cubesphere and
71        missing along the T axis but otherwise it works!
72    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
73    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
74    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
75      this is based directly on what the model compute, so that the content of
76      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
77    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
78    o clean up build options files for SunOS, in particular
79      - remove -traditional from xmakedepend
80      - change -xarch=v9 to -xarch=native for f77
81      - restore use of make (not gmake)
82      - add CC=gcc if using g77
83    o changes per discussion of AM, JMC, & EH3 today:
84      - move redundant "grid" variables out of "state" -- in preparation of
85        creating proper CF-style coordinate variables and in recognition
86        that any/all grid variables can be easily copied (eg. w/NCO) from
87        the grid files into any of the other NetCDF files
88      - *always* output grid variables with MDSIO (this will eventually be
89        changed)
90      - output MNC grid file if useMNC is true
91    o every instance of _END_MASTER() has been found and replaced with
92      _END_MASTER( myThid ) in order to satisfy certain picky Sun
93      preprocessors
94    o re-arrange diagnostics pkg initialisation:
95     - allow each package to extend the available diagnostics list
96     - add some checking and fix small problems (multi-threaded, ...)
97     - new S/R diagnostics_fill (replace fill_diagnostics):
98       look through the short list of active diag. (instead of the long list)
99       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
100    
101    checkpoint57a_post
102    o this set of changes restores TAMC compatibility
103      tested for global_ocean.90x40x15 adjoint on trough
104      (what a pain)
105    
106    checkpoint57a_pre
107    o some modifs in tools/build_options for sunos
108    o call ctrl_pack for ctrl at end for optimcycle=0
109    
110    checkpoint57
111    o add horizontal bi-harmonic viscosity for vertical velocity
112      - new parameter viscA4W (defaults to viscA4)
113      - affects only non-hydrostatic code
114      - to be done: no-slip lateral boundary conditions
115    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
116    o implement Implicit Vertical advection for pTracers
117    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
118      (implemented also for implicit vertical diffusion & advection)
119    o OBCS: extend application of tracer open boundary conditions
120      to a strip beyond the boundary of width Olx/Oly
121    o add call monitor to TAF set of required calls (flow directives)
122      and include in natl_box_adjoint
123    o untangle a few ifdefs related to cost, ctrl, autodiff
124      untangel a few ALLOW_ECCO_OPTIMIZATION
125    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
126      (theta2, salt2 in ecco_cost_weights)
127    
128    checkpoint56c_post
129    o OBCS as control variables
130      - update ctrl_ad_diff.list, obcs_ad_diff.list
131      - remove balance of obcs controls from default
132      - fix index bug nobcs in ctrl_init
133      - fix dummy fields filen in ctrl_pack
134      - add dummy weights for obcs
135    o lsopt: comment out fort.94 output
136    o optim:
137      - remove unnecessary header files
138      - adjusted namelists
139      - add xerbla.F to Makefile
140    o exf:
141      - multiple modifications of exf_check_range
142      - unit change in exf_init_runoff from [m/year] to [m/s]
143    o mdsio:
144      - i/o-vector change debugLevel from debLevA to debLevB
145    
146    checkpoint56b_post
147    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
148      is called from DO_THE_MODEL_IO
149      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
150      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
151      - clean up PTRACERS_WRITE_TIMEAVE a little
152    o add another verification experiment that tests both the cfc-pkg and
153      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
154      reactive tendencies treated inline with regular timestepping
155    o testreport previously did a lousy job of comparing small numbers, so
156      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
157      implemented in the little c-progam tmp_cmpnum.c which is embedded in
158      testreport.
159    o ptracers_monitor: bug fix for MPI
160    
161    checkpoint56a_post
162    o GCHEM: finish reorganizating the package
163      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
164        (introduces another 3D-array for each passive tracer, but only if
165        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
166        gchemTendency is not needed because the timestep is done separately)
167      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
168      - GCHEM is now---more or less cleanly---separate from PTRACERS
169      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
170        so clear to me how that should be done in a general way.
171    o CFC: improve formatting of output in CFC_ATMOS
172    o PTRACERS:
173      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
174        that ALL experiments with ptracers enable can be checked. This makes
175        GCHEM_MONITOR obsolete.
176      - include a runtime parameter PTRACERS_monitorFreq that defaults to
177        monitorFreq
178      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
179    o add PTRACERS (PTR0[1-5]) to testreport output
180    o exf_check_range:
181      * default changed to .TRUE.
182      * will check values for niter0 if debLevA, every timestep if debLevB
183      * STOP in exf_check_range if 'out of range'
184      * range chosen generous to allow for potential extema
185      TBD: a version with stricter range
186           permitted range would be runtime parameters
187    o GMredi:
188      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
189      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
190      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
191    o GCHEM:
192      - move call to GCHEM_FORCING_SEP, so that it is now called before
193        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
194      - introduced a useGCHEM runtime flag and applied it everywhere.
195      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
196        this flag is now only visible within GCHEM-pkg routines.
197      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
198        be replaced by a 3D array that is computed before thermodynamics; for
199        this, the tracer ID iTracer had to be included into the parameter list
200        of ptracers_forcing
201      - set up forward_step to call gchem_forcing, that will replace
202        gchem_forcing_int in ptracers_forcing
203      - cleaning up
204    o small cleaning of exch2: remove files that are also in eesupp/src
205    
206    checkpoint56
207    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
208    o mnc: cleanup "full" files--fixes out-of-memory problem
209    o ECCO-GODAE
210      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
211      * fully merged and updated from SIO code
212        windstress sign change affects
213        - exf_inscal_[u/v]stress
214        - sign of xx_tau[u/v] adjustments
215        - signs in cost_scat
216      * ctrl_get_gen: avoid update of tau[u/v] for first few days
217      * natl_box_adjoint updated and compressed
218      * 2-level checkpoint switch added
219        (tested in EXP. 1 of natl_box_adjoint)
220      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
221    o SVD
222      * first complete, non-hacked version for SVD calculations
223      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
224        performed via direct access files admtlm_vector.it????
225        (via ctrl_[un]pack)
226      * optimcycle is used for ARPACK iteration counter
227        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
228      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
229        and add linear transforms where necessary
230      * controls are initial/final SST, SSS (can be extended; need to check
231        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
232    o mdsio: filename info to both stderr, stdout
233    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
234      from sign change
235    
236    checkpoint55j_post
237    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
238      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
239    o add consistent build directories and .cvsignore files to verification
240    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
241    o make all subroutines 30 or less characters in length for certain older
242      compilers to work (a thorough search only turns up two routines in
243      pkg/ptracers)
244    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
245      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
246    
247    checkpoint55i_post
248    o change arrays for total vertical diffusivity (2.D if explicit,
249      3.D if implicit) ; each ptracer uses its own background value.
250    o added mnc/NetCDF output capability to ocn_compon_interf
251      - added bits to verification/cpl_aim+ocn so that it can run on
252        ITRDA and other clusters without the mpirun "-wd" option
253    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
254      configuration
255    o give MNC the ability to create additional files rather than
256      exceeding a specified file size limit "MNC_MAX_FILESIZE"
257      - the default is just less than 2GB which is a practical limit
258        on many systems
259    o Compute the non-local term using either KPP vertical diffusivity (=default)
260       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
261    
262    checkpoint55h_post
263    o add verification test "vermix"
264    o remove all the *_ioinc flags and replace with the single global
265      outputTypesInclusive flag
266    o allow to set a vertical profile of vertical diffusivity for T & S
267    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
268    o useMNC moved from data.mnc to data.pkg
269    
270    checkpoint55g_post
271    o Renaming carbon AD experiments to comply with testreport conventions
272    o Updating adjoint of Held-Suarez hs94.1x64x5
273    o Fixing directives for non-ECCO forward_step, after ECCO directives
274      have been fixed to avoid recomp. of do_oceanic_phys
275      Works well for global_ocean.90x40x15,
276      but recomp. issue remains for carbon
277    o Updating adjoint output for natl_box_adjoint after
278      pkg/ecco has been modified (see taga c55d_post)
279    
280    checkpoint55f_post
281    o rename to timeave_init_fixed
282    
283    checkpoint55e_post
284    o some delicate re-shuffle of store directives to avoid one
285      extra call of do_oceanic_physics
286      affects ecco_the_main_loop.F, do_oceanic_physics.F
287      checkpoint_lev1_directives.h
288    o NB: this may break global_ocean adjoint temporarily,
289      but it is clear how to fix it. Will do later, need this now.
290    
291    checkpoint55d_post
292    o ECCO specific cost function terms (up-to-date with 1x1 runs)
293    o ecco_cost_weights is modified to 1x1 runs
294    o modifs to allow observations to be read in as
295      single file or yearly files
296    o enable to read exf forcing fields as either
297      single file or yearly files (flag useExfYearlyFields)
298    checkpoint55d_pre
299    
300    o switch between 2-level and 3-level checkpointing
301    o add ability of MNC to write local and "partial" (eg. 2D slices where
302      the full 3D field is never actually stored) arrays to NetCDF files
303      with the correct (that is, the complete multi-dimensional) set of
304      array indicies
305      - used in mom_vecinv() to write the diagFreq output
306      - tested (demonstrated) in verification/aim.5l_cs
307    o further mnc-ification
308      - add verification/lab_sea to the list with mnc setups
309      - fix undefined mnc v-names in cd_code
310      - add kpp to mnc output (both snapshot and timeave)
311    o non-hydrostatic code
312      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
313        in calc_gw.F
314      - defaults to viscAh
315      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
316        friction or Leith) in non-hydrostatic mode, as long as there is
317        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
318    o pkg/cost
319      extend simple cost functions to treat time mean quantities
320      (T,U,V) via cost_accumulate_state from cost_tile
321    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
322        be 2 times larger than the minimum size the advection scheme requires.
323        now get a perfect conservation of salt in advect_cs test-exp (updated)
324    o GGL90 (Gaspar's TKE mixed layer)
325      - add horizontal diffusion of TKE, requires exchanges in
326        do_fields_blocking_exchanges, horizontal diffusivity is zero by
327        default. In OPA there is no horizontal diffusion of TKE but the
328        mixing coefficients are computed from a horizontal average of TKE of
329        6 points or so. I think that diffusion has a little more physical
330        justification.
331      - clean up ggl90_calc in the hope of reducing memory usage (this hope
332        was in vain)
333      - mask tke-variable in ggl90_init
334    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
335    o fix biharmonic diffusion on CS-grid.
336    o more obcs stuff
337      - added obcs_external_fields_load as an alternative to the EXF-pkg option
338        for reading boundary values. This routine is called from
339        obcs_prescribe_read
340      - updated obcs_check
341      - changed sponge layer relaxation parameter units for days to seconds
342      - turned off sponge layer by default
343      - changed argument list of OBCS_CALC to myTime+deltaTclock
344      - fixed about 35 bugs in obcs_external_fields_load
345    
346    checkpoint55c_post
347    o obcs stuff
348      - new runtime flags useOBCSprescribe, useOBCSbalance
349      - re-arranged obcs_calc
350      - moved exf_getobcs to obcs_prescibe_read
351        obcs_prescibe_read is called after ORLANSKI stuff
352        and independent of it (executable can contain all).
353      - updated obcs_check
354      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
355        These may be necessary only if tangential velocities are
356        prescribed at OB, not sure, needs testing.
357    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
358      which simplifies the calls and passes the ifc check-bounds test
359    
360    checkpoint55b_post
361    o add a 2D scalar, Z location, exchange_2 routine.
362    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
363      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
364      affects advect_cs results (for the wrong reason): update output.txt
365    o use a more standard discretization for biharmonic viscosity ;
366     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
367      affects results of dome set-up: update output.txt
368    o fix gad_advection.F (CubedSphere part), back to version 1.23
369    o fix bug in mom_vi_del2uv.F (CubedSphere part).
370    
371    checkpoint55a_post
372    o merged code to
373      * prescribe/read time-dependent open boundaries
374        (works in conjunction with exf, cal)
375      * sponge layer code for open boundaries
376      * each boundary N/S/E/W now has its own CPP option
377        (healthy for the adjoint)
378    
379    checkpoint55
380    o up-to-date adjoint of previous breaks
381      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
382      - global_ocean_ebm: adjoint still needs fix (TLM ok)
383      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
384      - carbon: * remove tr1-related adjoint verification
385                * add ptracer as control variable
386    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
387      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
388    
389    checkpoint54f_post
390    o in verification/carbin/ remove experiment related to
391      ALLOW_PASSIVE_TRACER (array tr1 etc)
392      code_ad/ input_ad/ results_ad
393    
394    o add two new packages
395      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
396        + subject to optimization (memory)
397      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
398        + subject to reordering (many GOTOs in the original code)
399        + so far opps is called for every (i,j) point, and then operates in
400          the vertical; one may want to reorder the scheme in order operate in
401          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
402          fields)
403    o overhaul of IO so that we now have flags for MDSIO and/or MNC
404      - all verification tests compile and run with linux_ia32_g77
405      - defaults are compatible with current input files--nothing
406        should change if you were not previously using MNC
407      - MNC output has been added in numerous places (eg. timeave)
408        but there are still a few writes not yet do-able with MNC
409        (this is in progress)
410      - flags now allow for either/or/both use of MDSIO and MNC and
411        documentation will soon follow
412      - numerous small formatting cleanups for ProTeX
413    o add version info (via BUILD_INFO.h) to MNC and stdout
414    
415    checkpoint54e_post
416    o add two new packages
417      - pp81 (Packanowski and Philander, 1981), Richardson number and
418        stratification dependent mixing
419      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
420      - these scheme operate in a similar manner as KPP (without ghat, of
421        course), however there is only one diffusivity that is used for both
422        temperature and salinity (and passive tracers)ç
423    o add offline package
424    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
425      provided by Stephanie Dutkiewicz
426    o genmake2: add ability to search for C compilers and cleanup test output
427      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
428    
429    checkpoint54d_post
430    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
431    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
432      leading to additional shift by 5 days each year of integration
433       (i.e. leading to considerable offset over the years)
434    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
435    o start with no AB and no initial filtering (staggerTimeStep):
436      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
437    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
438      (external loading & cpl import/export stay in forward_step.F)
439    o update coupling interface to work with new staggerTimeStep
440    o change MDSIO ptracers_pickup.
441    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
442    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
443    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
444    
445    checkpoint54c_post
446    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
447      this affects (truncation error) output.txt of test-exp:
448       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
449    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
450    o change Qnet to always be the net heat flux, (+upward).
451      affects (truncation error) output of natl_box exp.: updated
452    o define the max number of passive tracers in PTRACERS_SIZE.h
453    o start to test mnc routinely in exp0
454    o add sea-ice loading (sIceLoad) as a new forcing field.
455    
456    checkpoint54b_post
457    o add testreport "-j JOBS" option for parallel builds (tested and pretty
458       impressive on Altix and Opteron systems)
459    o diagnostics can now write NetCDF files through the mnc package
460    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
461    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
462    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
463      affects (truncation error) output of lab_sea & natl_box exp.: updated
464    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
465    
466    checkpoint54a_post
467    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
468    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
469    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
470    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
471      + internal_wave (shift in writing cg2d_ini_res)
472    checkpoint54a_pre
473    
474    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
475      - modified verification/lab_sea and natl_box_adjoint accordingly
476    
477    checkpoint54
478    checkpoint53g_post
479    o prepare splitting of thermodynamics: store convect.counter in common block
480    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
481      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
482    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
483    o new parameter "nShapS": allow to treat differently S from T (nShapT)
484    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
485    o restore adjointability
486    
487    checkpoint53f_post
488    o modifications that affect AIM experiment results (update output.txt):
489      - no advection of S at top interface Nr (pkg/generic_advdiff)
490      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
491    o AIM pkg:
492      - include stability function into surf.Flux derivative relative to Tsurf
493      - calculate clear-sky radiation & surface temp. change (for diagnostics)
494    
495    checkpoint53e_post
496    o merged cylindrical coord configuration
497    o added rotating_tank experiment
498    checkpoint53e_pre
499    
500    checkpoint53d_post
501    o faulks upgraded: re-generate output.txt that have changed:
502       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
503    o Added Bryan and Lewis, 1979, vertical diffusivity profile
504    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
505    o added Sadourny discretization of Coriolis
506      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
507      - re-enabled use of omega3 (useAbsVorticity)
508    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
509      vector-invariant equations
510      - note: does *NOT* yet use same variable visc. for no-slip BC's.
511    o recoded the lateral boundary conditions for non-hydrostatic w, this time
512      hopefully without new bugs
513      - still to do: biharmonic friction for non-hydrostatic w
514    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
515    o regenerated output for global_ocean_ebm (using -ieee)
516    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
517      of mom_common/
518      - simple re-arrangement of instructions within computing loop
519    checkpoint53d_pre
520    
521    checkpoint53c_post
522    o new version of coupler for AIM+thSIce and Ocean models
523     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
524     - land: change Evaporation of snow
525     - aim with thSIce: fix bug in snow-precip.
526    o changes to calc_gw.F
527     - bug fix for w^2 term near the bottom boundary
528     - (hopefully) improve the lateral slip boundary condtions for use with
529        partial/looped cells
530      - because the bug fix changes two verification experiments anyway (exp5
531        and plume on slope), change the lateral boundary condition from half slip
532        to the value of no_slip_sides
533    o ebm package wasnt quite up to the parallel task. Fixed that.
534    o Adjoint of EBM package + verification
535      * TLM OK
536      * ADM not sufficient accuracy yet (needs further testing)
537    
538    checkpoint53b_post
539    o Commiting new energy balance model to repository
540      * package is pkg/ebm
541      * verif. is verification/global_ocean_ebm
542      * references are in ebm_driver.F
543    C      * X. Wang, P. Stone and J. Marotzke, 1999:
544    C        Global thermohaline circulation. Part I:
545    C        Sensitivity to atmospheric moisture transport.
546    C        J. Climate 12(1), 71-82
547    C      * X. Wang, P. Stone and J. Marotzke, 1999:
548    C        Global thermohaline circulation. Part II:
549    C        Sensitivity with interactive transport.
550    C        J. Climate 12(1), 83-91
551    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
552    C        Destabilization of the thermohaline circulation
553    C        by atmospheric eddy transports.
554    C        J. Climate 7(12), 1870-1882
555    o Will need long integration testing.
556    checkpoint53b_pre
557    
558    o created pkg/mom_common in preparation for variable viscosity code
559    o renamed and split ini_mnc_io
560    o pkg/land: only liquid water can diffuse or run-off
561    o AIM using land: soil wetness availability account for snow
562    o added printMapIncludesZeros to EEPARMS namelist
563    
564    checkpoint53a_post
565    o restore TAMC compatiility for exf_constants.h
566      (no usage of _d in .h)
567    o Additional storing in KPP in an attempt to fix
568      TAMC problem with adjoint of KPP code.
569      (no success...)
570      Identical code works fine with TAF.
571    o Fixed verification/natl_box_adjoint experiments.
572      Initial conditions for Experiments 4 and 5 are now
573      set to "SEAICE_initialHEFF=0", which is more reasonable,
574      and hence gives results closer to that of Experiment 2.
575      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
576    
577    checkpoint53
578    o stable checkpoint with up to date adjoint
579      TLM tests only run for 1st grdchk at the moment. Its unclear if
580      this is a code problem or a problem with resetting code for g_
581      variables that is being autogenerated wrong.
582      Otherwise:
583       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
584       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
585         are both still in chaos following their security messes.
586    
587    checkpoint52n_post
588    o various build (mostly genmake2) changes including:
589      - ability to build/run more easily within Cygwin and MacOS X
590      - more complicated Makefiles with a stronger dependence on Gnu Make
591    o pkg/seaice modifications
592      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
593        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
594        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
595      - changed proxy for geostrophic velocity and updated
596        verification/lab_sea/results/* accordingly
597      - removed ADI dynamic solver from pkg/seaice
598      - replaced all occurrences of 1/CSTICE or 1/CSUICE
599        they caused a segmentation fault under certain circumstances
600      - removed unused field WATR
601    o bug fix in exf-package:
602      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
603         now reflect that.
604    o small fixes in the cal-package:
605      - set reference date to first of January for the 'model'-calendar
606      - failing of cal_CheckDate in cal_FullDate now actually results in a
607        warning
608    o small modifications in exf-package to increase flexibility:
609      - change climtempfreeze from a constant to a runtime parameter that
610        is specified in data.exf_clim (default = -1.9)
611      - introduce runtime parameter windstressmax (default = 2.0) that is
612        specified in data.exf
613    o fix in pkg/thsice:
614      - update Evap (Tsf changes) to be consistent with Latent heat flux
615      - maintain snow precipitation unchanged (even if Tsf >=0).
616     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
617    
618    checkpoint52m_post
619    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
620      this does not change any of the results, because myIter=0 in swfrac always
621      lead to jwtype=2 (the default anyway), but the call makes little sense
622      as a default
623    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
624    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
625      atmospheric model (AIM) to use it ; add a "slab ocean" component.
626    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
627    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
628    o extending useSingleCpuIO option to work with new exch2 I/O format
629      - old-style, missing-tile I/O is still accessible by defining CPP
630        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
631    o monitor package can write to NetCDF files and/or STDOUT
632    o fix re-definition bug in MNC_GRID_INIT_ALL()
633    o doc/api_reference added
634      - a framework for building an API Reference Manual using all
635        the "protex" comments embedded in the code
636      - see pkg/generic_advdiff, pkg/mnc for examples
637    o MNC:
638      - make myThid the last argument for all subroutines
639      - new default for the grid files: NO halos
640      - add useMNC and other run-time flags
641      - separate per-file-group handling of the unlimited dimension
642      - early initialization of MNC w/ flags read at the eeboot stage
643        and lookup tables set in initialize_fixed
644      - write all MNC output to a freshly-created directory
645    o thermodynamics sea-ice (thsice) is now tested with testreport.
646    o test exp. advect_cs: use the standard cs32 grid ; update output.
647    o Added functionality to grdchk:
648      pick global i,j,k position (or nearest wet) where to perform check.
649    
650    checkpoint52l_post
651    o new land formulation:
652      a) use ground enthalpy as prognostic variable to ensure exact
653         energy conservation.
654      b) account for water temperature and for latent heat of freezing
655         in all processes (rain, run-off, ground storage)
656      c) compute surface and ground temperature implicitly.
657    o aim_v23 modification for new land model:
658      a) Treat separately land / ocean / sea-ice surface fluxes
659         to allow implicit computation of land & sea-ice surface temp.
660      b) add snow precipitation.
661    checkpoint52l_pre
662    
663    o fix problem (when 1 tile is empty) in min/max monitor.
664    o fix bug in timeAve (u,vZetatave in common block)
665    o no restoring terms under ice for pkg/seaice
666    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
667    o bug fix for pkg/seaice pickups
668    o change MNC call locations and add coordinate attributes
669    o mask vorticity at the corner ; affects global_ocean.cs output
670    o fix ini_curvilinear_grid ; test CS experiments with mpi
671    o aim.5l_cs: modify sea-ice fraction input file ; update output
672    o exf: Adding simple range check routine for exf fields after read
673    
674    checkpoint52k_post
675    o removed top-level directory "diags"
676      - we migrated these functions to pkg/timeave a long time ago
677    o fixed bug introduced in pkg/monitor
678    o accuracy ctrlprec = 32 insuffient for gradient checks using
679      averaged fields (I/O via cost_averages)
680      -> use ctrl.h in active_file*.F to control I/O precision.
681    o paramter list of CALL ADTHE_MAIN_LOOP
682    o added initial do_the_model_io to ecco
683    o set all ...Freq to zero after cost_final
684      taveFreq, dumpFreq, pChkptFreq
685    o MAIN and ECCO differentiability restored
686    
687    checkpoint52j_post
688    o fix nchklev in tamc.h for global_ocean...
689    o Bringing flow and store directives up-to-date
690    o Really weird thing!
691      call do_the_model_io from the_main_loop with parameters
692      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
693      TAF places a faulty re-call of initialise_varia
694      after cost_final call which should not be there!
695    checkpoint52j_pre
696    
697    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
698      error messages
699    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
700    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
701      debug output
702    o modfied mdsio_writefield.F to handle non-global files under exch2
703    o update AIM Cubed-Sphere exp (aim.5l_cs):
704      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
705    o update AIM Equatorial Channel exp:
706      use standard aim_v23 pkg and change the SST fields to be more realistic.
707    o globalFile now works with exch2
708    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
709      mon_vort3.F to make exch2 friendly with >1 tile per cube face
710    o limit timeave output for hi-res integrations
711    
712    checkpoint52i_post
713    o removed CPP_EEOPTIONS.h from verification/*/code
714    o updated the tiling for global_ocean_pressure
715    checkpoint52i_pre
716    
717    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
718      the old pkg/aim).
719    
720    checkpoint52h_pre
721    o shortened offending lines in exch2_send_rx?.template
722    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
723    o genmake2: add build & execute test for NetCDF code
724    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
725      old grid files, moved CPP_EEMACROS.h to pkg/exch2
726    o added useSingleCPUIO flag to monitor.F and mon_out.F
727    o added temporary hack for sea-ice dynamics on the cube:
728      metric terms are ignored and it is assumed that
729      there is no sea-ice on cube faces 1, 2, 4, and 5.
730    
731    checkpoint52f_post
732    o added exch2 cube routines to pkg/exch2
733    o modified hs94.cs-32x32x5 to use it
734    o added new grid files to hs94.cs-32x32x5
735    checkpoint52f_pre
736    
737    checkpoint52e_post
738    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
739      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
740    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
741      to work with implicit vertical advection and AB ;
742    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
743    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
744     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
745    checkpoint52e_pre
746    
747    o fix bug in impldiff when Nr=1 or Nr=2.
748    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
749    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
750    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
751      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
752    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
753    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
754    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
755    
756    checkpoint52d_post
757    o re-tiled many expts to allow comparison in multi-processor mode
758      - updated output accordingly
759      - changed hs94.128x64x5 to use intial T from file rather than use the
760        random number generator
761    o add infrastructure in model routines for fizhi and gridalt packages
762    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
763    o changes to permit hi-res, cubed-sphere, configuration
764      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
765      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
766      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
767        of surface winds for the cube
768      (A verification experiment, based on global_ocean.cs32x15, but with
769       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
770       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
771       complete with example surface forcing files and matlab scripts to look
772       at the output and compare it with that of global_ocean.cs32x15.)
773    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
774       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
775       to conform to the common rule.
776    o check-in the first version of the coupler + interfaces for multi-components
777       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
778       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
779       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
780       - ocean and atmos. share the same horizontal grid (no interpolation).
781       - exchanges between component and coupler is done in forward_step
782    o new verification experiment, cpl_aim+ocn:
783       coupled ocean - AIM atmosphere on cs32 grid.
784    
785    checkpoint52d_pre
786    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
787    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
788    
789    checkpoint52c_post
790    o Fixing OPTIONS files for use of exf:
791      - ALLOW_ECCO not needed
792      - ECCO_CPPOPTIONS.h should not be included from
793        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
794        as has been the case in the past
795      - All cal/exf related options are currently set in
796        single header file. Should remain so until we
797        agree on a consistent new policy.
798    o Removed all CPP options for cal package.
799      cal has no more CPP options.
800    o modified STOREs in GAD_ADVECTION
801    o corrected key comp. for passkey
802    
803    checkpoint52b_post
804    o new version: "thsice" of thermodynamic sea-ice pkg:
805     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
806     - modify fluxes but do not change theta directly;
807     - light cleaning of bulk_force pkg (still needed with thsice).
808     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
809       + output_thsice.txt to test thsice & bulk_force pkgs.
810    o put back grid & coriolis monitor output.
811    checkpoint52b_pre
812    
813    o call "do_the_model_io" at the beginning (=> dump initial state)
814    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
815    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
816      (need info on NUMBER_OF_PTRACERS)
817    o missing PTRACERS headers in some routines
818    o default tamc.h in pkg/autodiff supposed to crash
819      to ensure proper customization
820    
821    checkpoint52a_post
822    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
823      - moved surfaceTendencyTice from pkg/seaice to main code
824      - subroutine FREEZE_SURFACE now limits only surface temperature
825        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
826        => new output.txt for global_ocean.cs32x15 & global_with_exf
827      - keep the old version of FREEZE for backward compatibility;
828        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
829      - corresponding modifs for TAF directives
830    o added surface flux output variables to TIMEAVE_STATVARS
831    o time-averaged output for pkg/ptracers
832    o fix problem with ECCO-related divided adjoint
833      snapshot file was missing some ad-variables,
834      but no warning issued by TAF
835    
836    checkpoint52a_pre
837    o some bug fixes for #undef REAL4_IS_SLOW
838    
839    checkpoint52 = ecco_c52_e35
840    o after testing adjoints of checkpoint51u_post
841    
842    checkpoint51u_post
843    o this is the post-merge tag of the ecco-branch
844      (needs another clean checkout and re-testing)
845    o various natl_box_adjoint configs and results
846      but no input fields
847    o obcs adjoint not yet merged!
848    o adding ECCO global 1x1 and 2x2 degree configs
849    o updated/extended some store directives for seaice
850    o pkg/ecco now containes ecco-specific part of cost function
851    o top level routines the_main_loop, forward_step
852      supersede those in model/src/
853      previous input data.cost now in data.ecco
854      (new namelist ecco_cost_nml)
855    o in ctrl/ cleaned some cross-dependencies and updated CPP options
856    
857    checkpoint51t_post
858    o this is the pre-merge tag of the ecco-branch
859    
860    checkpoint51s_post
861    o cleanup: removed various obsolete #define-s
862    o pkg/grdchk
863      - renamed 'ph-grd 3' to 'grad-res'
864      - merged from ecco-branch
865        (remaining bug fixes for obcs gradient checks)
866      - additional high-precision output for testreport
867        (grep for 'precision_grdchk_result')
868    
869    checkpoint51r_post
870    o cleaned up or removed CPP_OPTIONS.h files
871    o updated results for some of the tests to reflect the new
872      optfiles (-ieee: -O0 instead of -O3)
873    
874    checkpoint51q_post
875    o cd_code:
876      - moved cd_scheme.F -> cd_code_scheme.F
877      - separate read_checkpoint from cd_code_ini_vars.F
878      - separated cd_code part from write_checkpoint
879      - updated AD_SOURCE, generated .flow
880      - added CD_CODE_VARS.h to the_main_loop
881      - Moving cd_code specific store dir.s to pkg/cd_code
882    o ctrl package totally restructured
883      - pack/unpack now optional and decoupled from
884        xx_/adxx_ I/O
885      - ctrl_pack/unpack cleaned
886        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
887      - confined inclusion of AD_CONFIG.h to where necessary.
888    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
889    
890    checkpoint51p_post
891    o create initial cd_code package
892      - WARNING: the initialization of fields within packages
893        is broken because INI_FIELDS (where READ_CHECKPOINT is
894        called) is called *before* PACKAGES_INIT_VARIABLES.
895        This seems to be backwards since
896        1) its important to initially zero the entire field including
897           the "halo" region
898        2) zeroing needs to be done *before* reading pickup info
899           and the pickup call might or might not happen in any
900           particular run
901      - this needs an overhaul for R2
902    o cleanup verification/*/code/GMREDI_OPTIONS.h
903    o cleanup testreport
904    
905    checkpoint51o_post
906    o bringing AD-related verif's up to date with genmake2
907      - carbon/
908      - global_ocean.90x40x15/
909      - hs.94.1x64x5/
910      - (front_relax/ )
911    o (more) consistent directory structure for AD-related verif.'s
912    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
913    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
914    o bug fix in find_alpha.F for MDJWF:
915      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
916        change rho -> rho-rhoConst
917      - replace call find_rho to find_rhonum
918    o initialisation of rFlx extended to full array (required by TAF)
919      and shifted to thermodynamics
920    o removed PTRACERS.h in ptracers routine
921    o added surfacetendencyPtr to S/R parameter list pracers_forcing
922    o Correcting initialisations for fVerU, fVerV.
923    o helping TAF to recognize dependency on kUp for
924      fVerU, fVerV
925    o Replacing delZ by delR in pkg/ctrl/
926    checkpoint51o_pre
927    
928    o undid all of cp51 pending some cleanups and discussion
929    o added the [#include "AD_CONFIG.h"] statement to all files that need
930       it for adjoint/tl #defines
931     o re-worked the build logic in genmake2 to support AD_CONFIG.h
932     o removed tools/genmake since it no longer works
933    
934    checkpoint51n_post
935    o modifications to make FREEZE flux visible to pkg/kpp
936      - moved surfaceTendencyTice from pkg/seaice to main code
937      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
938      - subroutine FREEZE now limits only surface temperature
939        (this means new output.txt for global_ocean.90x40x15,
940         global_ocean.cs32x15, and global_with_exf)
941    o added surface flux output variables to TIMEAVE_STATVARS
942    
943    checkpoint51n_pre
944    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
945    o added [#include "AD_CONFIG.h"] to all files that use the following
946      defines:
947      - ALLOW_ADJOINT_RUN
948      - ALLOW_TANGENTLINEAR_RUN
949      - ALLOW_ECCO_OPTIMIZATION
950    
951    checkpoint51m_post
952    o incorporating changes to get TAMC/TAF working in genmake2
953      - added new TAMC/TAF targets to the Makefile
954      - various cleanups related to package handling
955      - these changes should have no impact on the forward model
956    
957    checkpoint51l_post
958    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
959     - faster algorithm for cal_addtime.F
960     - higher precision arithmetic, where needed
961     - pkg/exf *startdate variables changed from calendar date to
962       model integration time
963    
964    checkpoint51l_pre
965    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
966    o enable to apply restoring on S & T only in a latitude band.
967    o update output (external_forcing_surf modif. change truncation errors)
968       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
969    
970    checkpoint51k_post
971    o change default to: useNHMTerms=.FALSE.
972     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
973       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
974     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
975        exp1, ideal_2D_oce
976     - change data file of oceanic exp (leave the results unchanged for now)
977       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
978    o set gravitySign automatically according to the vertical coordinate used
979      (and change sign: back to "logical" value: +1 when R increases downward)
980    o added an include barrier to the default CPP_OPTIONS.h and
981      removed the #include "PACKAGES_CONFIG.h" from it
982    o fix a bug in mom_fluxform (from chk51j_post)
983    
984    checkpoint51j_post
985    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
986    o adjusted some flow directives (dynamics, thermodynamics)
987    o added cubed-sphere case to test cost function
988    o heckpoint_lev?_directives.h now include
989      pkg-specific directives, whenever those are enabled.
990    o Moving pkg-specific flow directives to corresponding pkg
991      Moving pkg-specific differentiation list to corresponding pkg
992      Moving pkg-specific checkpoint-lev storing to corresponding pkg
993      ---> conventions are
994           - pkg_ad.flow
995           - pkg_ad_diff.list
996           - pkg_ad_check_lev?_dir.h
997    
998    checkpoint51i_post
999    o merge of the branch-genmake2
1000      - knowingly breaks the older genmake
1001      - automatic generation of all ALLOW_${PKG_NAME} defines
1002      - new testreport supersedes older testscript
1003    o large number of package inclusion and header cleanups
1004    checkpoint51i_pre
1005    
1006    o new output for adjoin of global ocean vector invariant
1007    o fix for checkpoint of thermodynamic seaice and bulk_force
1008    o Steph gchem various cleanups
1009    
1010    checkpoint 51h_pre
1011    o fixed some single quotes
1012    o modify gchem pkg to be more versatile
1013    o modifications to clean up dic pkg
1014    o add pkg/cfc
1015    
1016    checkpoint51g_post
1017    o provide links for ARPACK and ADM*TLM
1018    o start removing verification/vero/
1019    o update AD-related stuff
1020      (in particular some IF-statements in model/src/ routines)
1021    o adding to verification/global_ocean.90x40x15/ adjoint of
1022      vector invariant setup
1023    
1024    checkpoint51f_post
1025    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1026    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1027      of tracer Green's fucntions for ocean inversion project.
1028    
1029    checkpoint51f_pre
1030    o Added on-the-fly spatial interpolation capability
1031        "USE_EXF_INTERPOLATION" to pkg/exf.
1032      - This is a temporary Cartesian-grid hack until
1033        the super-duper ESMF coupler becomes available.
1034      - See verification/global_with_exf/README for usage example.
1035      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1036        flags and modified pkg/seaice accordingly.
1037    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1038        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1039        non-local transport term.
1040    
1041    checkpoint51e_post
1042    o pkg/mom_vecinv:
1043      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1044      - add time-ave diagnostic of vorticity advection.
1045    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1046    o atmospheric geopotential: - include water vapor effect;
1047                                - use p^kappa in p* scaling.
1048    o land pkg: read initial state from files.
1049    o AIM : add stratospheric drag in the upper level
1050    
1051    checkpoint51d_post
1052    o change function ILNBLNK (=> last non-blank char.) to return zero
1053      (instead of the string length) when the string. char is empty
1054    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1055    o modif's to restore TAMC compatibility
1056      - avoid "_d" constructs in PARAMETER declarations
1057      - avoid interrupting lines by comment lines
1058    o Use cluster local disks for purely local I/O
1059      vs. globally visible disks needed for ctrl stuff
1060      (merged from ecco-branch)
1061      - new active_file_loc... and mdsio_..._loc routines
1062      - affected packages: autodiff, ctrl, grdchk, mdsio
1063    
1064    checkpoint51c_post
1065    o introducing integer flag debugLevel
1066      - debLevZero: suppress all output
1067      - debLevA: standard
1068      - debLevB: equivalent to current debugMode=.TRUE.
1069    o introducing pathname variable mdsioLocalDir for mdsio
1070      that can be specified at runtime
1071      (relevant for cluster I/O to local disk)
1072    `
1073    >>>checkpoint51b_post
1074    adjoint of ptracers
1075    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1076    o extended state in checkpoint_lev?, etc.
1077    o alternative ctrl/cost with tr1 or ptracer
1078    o new comlev1_bibj_ptracers
1079    o new ptracers.flow
1080    o made ptracers_forcing same as external_forcing_s
1081    o added verification for adjoint with ptracers
1082      - adm. grdchk fail so far
1083      - tlm. grdchk OK
1084      - checked tapelev/comlev recomputations: OK
1085    <<<checkpoint51b_pre
1086    
1087    checkpoint51a_post
1088    o added code for biogeochemistry package
1089      - new pkgs: dic, gchem
1090      - new subroutine in ptracers
1091    o modify code for biogeo packages
1092      - in model/src and pkg/ptracers
1093    
1094    checkpoint51
1095    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1096      - autodiff, ctrl, exf, grdchk, seaice
1097      kept separate packages
1098      - cost, ecco, obcs
1099    o updating verification/internal_wave, verification/lab_sea
1100      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1101    
1102    checkpoint50i_post
1103    o Preparing next differentiable checkpoint and sync
1104      of MAIN vs. ecco-branch
1105      - 1st step: this one is differentiable
1106      - 2nd step: next(! not this) checkpoint will have updated packages
1107                  from ecco-branch)
1108    
1109    checkpoint50h_post
1110    o new package "land": provide surface BC for AIM.
1111    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1112    o AIM: use true log-P extrapolation for near surface temp (= as in
1113        F.Molteni paper) ; update aim.5l_cs output.
1114    o New variable in PARM03 for more flexible pickups
1115    o somewhat cleaned package initialisation sequence for
1116      ctrl/ cost/ ecco/ in packages_... routines
1117    
1118    checkpoint50g_post
1119    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1120      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1121      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1122        made the default because of faster convergence than ADI
1123    
1124    checkpoint50f_post
1125    o exf totally restructured
1126      - replaced all exf_set_ routines by one generic exf_set_gen.F
1127        and made sure it's still differentiable
1128      - split exf_getffields.F into new exf_bulkformulae.F
1129      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1130      - updated adjoint/makefile and relevant verif. accordingly
1131    
1132    checkpoint50f_pre
1133     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1134          + change Evap over land. (update aim.5l_cs output)
1135     o added missing .cvsignores and made uniform across expts
1136     o changed configuration of tidal_basin_2d expt
1137     o added pkg/debug functions for tracing code in fatal crashes
1138     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1139     o new fn in pkg/monitor to stop model if solution grows too big
1140     o removed lots of single quotes from comments
1141    
1142    checkpoint50e_post
1143    o make KPP work with PTRACERS
1144     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1145       nearly a copy of kpp_transport_s
1146     - there is no analogue to SurfaceTendencyS, so I have to use
1147       gPtr(of the surface layer) instead
1148    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1149    checkpoint50e_pre
1150    
1151    checkpoint50d_post
1152    o change kpp output from multiple-record state files to single-record state
1153      files analogous to write_state.F
1154    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1155      analogous to the cg2d-related output.
1156    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1157      so that writing to internal file fn (with length 512) fails.
1158    checkpoint50d_pre
1159    
1160    checkpoint50c_post
1161    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1162    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1163    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1164    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1165    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1166    
1167    checkpoint50c_pre
1168    Merging from release1_p13:
1169    o bug fix for pkg/seaice dynamic solver
1170    o Added SEAICE_initialHEFF to pkg/seaice
1171    
1172    checkpoint50b_post
1173    o store u*,v* in gU,V instead of in guNm1,gvNm1
1174    o in order to put the momForcing out of the Adams-Bashforth:
1175      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1176      to timestep.F
1177    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1178    o re-generate output for highly sensitive test-exp:
1179       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1180    
1181    checkpoint50b_pre
1182    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1183    o corrected CPP option mismatch in exf_Bulk... functions for case
1184      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1185    
1186    checkpoint50a_post
1187    o Bug fix for merging between c50 and KPP.
1188      ikey was passed from thermodynamics to kpp_calc via
1189      common block rather than being recomputed in kpp_calc,
1190      in contradiction with new key itdkey.
1191      New key ikppkey created, and tamc.h headers updated.
1192    
1193    checkpoint50
1194    - 2nd step of merge with ecco-branch:
1195      merge changes in ecco-branch back into main trunk
1196    - bug fix in find_alpha
1197    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1198    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1199    - merged some sliced AD support routines
1200    
1201    checkpoint49
1202    merged from ecco-branch:
1203    o exf:
1204      - Enable initialisation of forcing fields to constant
1205        (runtime) values.
1206      - in exf_getffields.F
1207        Reduce i-/j-loop to interior domain, discarding overlaps.
1208        That also fixes wrong TAF-key computations for key_1, key_2
1209        with bulf formulae.
1210      - exf_init.F modify #ifdef for exf_init_evap
1211      - exf_getffieldrec.F, ctrl_getrec.F
1212        The following INT-usages are not safe:
1213          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1214          fldcount = int(fldsecs/fldperiod) + 1
1215        and were modified.
1216    o autodiff: checkpoint_lev...
1217      - updated storing for bulk formulae (some arrays were missing)
1218      - added state for seaice package
1219      - synchronized with main branch
1220    o DIVA:
1221      Modif.s in
1222      - the_main_loop.F
1223      - the_model_main.F
1224      and added cost_final_restore.F cost_final_store.F
1225      o With these changes, it is possible to fully separate
1226        the first forward run to compute the cost function (mdthe_main_loop)
1227        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1228        into separate model executions.
1229        This enables better tuning of DIVA to given queue sizes.
1230      o Loss of cost function value in consecutive DIVA runs is
1231        fixed by storing to 'costfinal' file.
1232      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1233        beginning/end of adjoint integration is accounted for.
1234      The current changes apply to TAF-1.4.26.
1235      TAF has one remaining bug, requiring one manual change
1236      (see MITgcm manual).
1237    o cal: synchronized between MAIN and ecco-branch
1238    
1239    checkpoint48i_post
1240    o Changes to restore differentiability of code w.r.t. previous tag
1241      (mostly adding new routines to make list and replacing
1242      pressure by totPhiHyd).
1243    o Updated and merged grdchk package
1244      - has both ADM and TLM checks
1245      - works for single- and multi-proc.
1246      - output cleaned
1247      - worked successfully for parallel DIVA
1248    o genmake:
1249      - Adding -platform=SP4
1250      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1251    o Modif. for DIVA:
1252      ctrl_unpack should not be called in intermediate DIVA interval.
1253      (similar thing would apply for active files such as
1254      tbar, sbar, psbar, which should not be reinitialised;
1255      only relevant for ecco-branch)
1256    
1257    checkpoint48h_post
1258    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1259    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1260    o Added SEAICE_initialHEFF to pkg/seaice
1261    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1262    
1263    checkpoint48g_post
1264    --- EOS:
1265    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1266      store total Potential in totPhyHyd for diagnostics & EOS.
1267    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1268    --- Pressure/geopotential gradient:
1269    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1270    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1271      ( changes results of global_ocean_pressure )
1272    o NLFS + z-coord.: add eta*Rho' contribution.
1273    o accurate phiHyd when using interface-W at the middle between 2 centers
1274     ( changes results of ideal_2D_oce )
1275    o includes r* 2nd term in potential gradient.
1276    
1277    checkpoint48f_post
1278    Merging from release1_p12:
1279    o Modifications for using pkg/exf with pkg/seaice
1280      - improved description of the various forcing configurations
1281      - added basic radiation bulk formulae to pkg/exf
1282      - units/sign fix for evap computation in exf_getffields.F
1283      - updated verification/global_with_exf/results/output.txt
1284    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1285      (SBO) core products, including oceanic mass, center-of-mass,
1286      angular, and bottom pressure (see pkg/sbo/README.sbo).
1287    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1288      to avoid negative values in shallow regions.
1289      - updated verification/natl_box/results/output.txt
1290      - updated verification/lab_sea/results/output.txt
1291    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1292    o Added useSingleCpuIO option (see PARAMS.h).
1293    o Updated useSingleCpuIO option in mdsio_writefield.F to
1294      work with multi-field files, e.g., for single-file pickup.
1295    o pkg/seaice:
1296      - bug fix in growth.F: QNET for no shortwave case
1297      - added HeffFile for specifying initial sea-ice thickness
1298      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1299    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1300      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1301    o pkg/seaice:
1302      - adjoint-friendly modifications
1303      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1304    
1305    checkpoint48e_post
1306    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1307    o dynamics: change definition of computational domain & adapt mom_fluxform
1308      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1309    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1310        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1311        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1312        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1313        inverted_barometer solid-body.cs-32x32x1
1314      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1315    
1316    checkpoint48d_post
1317    o in preparation for r*:
1318     a) use pre-computed gradient of hydrostatic potential:
1319        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1320     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1321        => affects results of glob_oce_pressure (different truncation error)  
1322      update output.txt of ideal_2D_oce & global_ocean_pressure
1323    
1324    checkpoint48d_pre
1325    o in preparation for r*:
1326      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1327      pass the 2 comp. of the grad. as arguments to momentum S/R.
1328      but for the moment, only used if it does not change the results.
1329    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1330    
1331    checkpoint48c_post
1332    Modifications in treatment of initial flux forcing controls
1333    to avoid extra storing of flux fields.
1334    
1335    checkpoint48c_pre
1336    o Added tidal_basin_2d experiment (currently 1D!)
1337    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1338    
1339    checkpoint48b_post
1340    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1341     (modification to pressure gradient not yet implemented)
1342    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1343      (for U & V) that are used for vertical advection of momentum.
1344    
1345    checkpoint48a_post
1346    o In preparation for r*, use temp. array to compute vertical transport
1347       in flux-form momentum pkg. => change results of few test-exp.
1348      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1349                        lab_sea, natl_box & plume_on_slope
1350    
1351    checkpoint48
1352    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1353    
1354    checkpoint47j_post
1355    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1356    o moved adexch from forward_step to addummy_in_stepping
1357    o added exch in ctrl_map_...
1358    o aveFreq.=0. at end of cost_final to avoid overwrite in
1359      reverse checkpointing loop
1360    o Yet more changes in gmredi:
1361      * adgmredi_calc_tensor
1362        avoiding all recomputation of gmredi_slope_limit
1363      * adgmredi_x/y/rtransport
1364        added flag for excessive storing to avoid recomp. of
1365        u/v/rtans, dTdx/y/z
1366        -> this is not really necessary and very memory-consuming
1367      * adgmredi_slope_psi:
1368        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1369      * gmredi_slope_limit
1370        re-activated full calculation of taperfct for case 'ac02'
1371    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1372    
1373    checkpoint47i_post
1374    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1375    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1376      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1377    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1378    o gmredi: fix few bugs.
1379    
1380    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1381    This will be a good checkpoint to plug into the ecco-branch.
1382    o few modif.'s to get latest version adjointed
1383      (mainly kick out code in ini_linear_phisurf)
1384    o modif's to run adjoint with exactConserv
1385    o case GM_BOLUS_ADVEC should be cleaned
1386      S/R gmredi_slope_psi should be cleaned
1387    o verification/carbon now has exactConserv=.TRUE.
1388    
1389    checkpoint47g_post
1390    o time-average AIM output: becomes independent from statvars time-average
1391      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1392    o After TAF bug fix:
1393      Tested adjoint of gmredi package.
1394      Tests were done with checkpoint47 rather than with latest
1395      checkpoint47f_post since the latter is broken for the adjoint
1396      verification/carbon/ contains both ADM and TLM gradient checks.
1397    Here they are, before they get changed/lost/stolen.
1398    Mostly modif.'s to fix numerical sensitivities.
1399    Gradient checks OK for
1400    - GM_taper_scheme:
1401      * clipping
1402      * ac02
1403      * linear
1404      * glw91
1405      * dm95
1406      * ldd97
1407    - GMREDI_OPTIONS:
1408      * GM_VISBECK_VARIABLE_K
1409      * GM_NON_UNITY_DIAGONAL
1410      * GM_EXTRA_DIAGONAL
1411      * GM_BOLUS_ADVEC
1412    in conjunction with data.gmredi parameters to be checked in
1413    in a few minutes under verification/carbon/code/
1414    
1415    checkpoint47f_post
1416    Merging from release1_p10:
1417    o modifications for using pkg/exf with pkg/seaice
1418      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1419        and SEAICE_EXTERNAL_FLUXES
1420      - pkg/exf CPP options EXF_READ_EVAP and
1421        EXF_NO_BULK_COMPUTATIONS
1422      - usage examples are Experiments 8 and 9 in
1423        verification/lab_sea/README
1424      - verification/lab_sea default experiment now uses
1425        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1426    
1427    checkpoint47e_post
1428    o created a tag prior to creating a branch
1429    
1430    checkpoint47d_post
1431    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1432      at the bottom boundary had an erroneous half slip boundary condition
1433    o added bottom drag and no slip boundary condition capabilities to
1434      oceanic pressure coordinates code
1435    o added new verification experiment global_ocean_pressure, this experiment is
1436      also described in the tutorial section of the manual
1437    checkpoint47d_pre
1438    
1439    checkpoint47c_post
1440    o Added a verification experiment for a global cubed-sphere ocean run
1441      -  verification/global_ocean.cubed32x32x30
1442      -  uses pkg/therm_seaice and pkg/bulk_forcing
1443    
1444    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1445    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1446      when using P-coordinate; only implemented for atmospheric config.
1447    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1448      NOTES: requires option NONLIN_FRSURF to be "#define".
1449    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1450    
1451    checkpoint47b_post
1452    Merging from release1_p9:
1453    o pkg/seaice
1454      - removed GOTO's and added taf directives
1455      - double precision constants to reduce the g77 (Linux)
1456        to F77 (SGI) differences reported in release1_p8
1457    o tools/genmake
1458      - added SGI options
1459    o verification/testscript
1460      - updated to that of checkpoint47a_post
1461    o verification/global_ocean.90x40x15/input/eedata
1462      - modified for SGI f77 compatibility
1463    o verification/lab_sea
1464      - added description of sea-ice model
1465      - added missing matlab routines
1466      - added test of thermodynamics parallelization
1467    
1468    checkpoint47a_post
1469    o new pkg: aim_v23
1470     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1471       for now, keep the same surface forcing as before.
1472     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1473     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1474     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1475    o add diagnostic of surface correction term in monitor output
1476    
1477    o bulk_force and therm_seaice
1478    - Two packages:  bulk_force (Bulk forcing)
1479      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1480    - Earlier integration from Stephaine Dutkiewicz
1481      and Patrick Heimbach.
1482    - Two ifdef statements for compile time,
1483       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1484    
1485    checkpoint47
1486    differentiable version of checkpoint46n_post
1487    o bug fix in quasihydrostaticterms
1488    o * "clean" adjoint code (in terms of extensive recomputations)
1489        can now be obtained for all GMREDI options (i.e. for
1490        - GM_VISBECK_VARIABLE_K
1491        - GM_NON_UNITY_DIAGONAL
1492        - GM_EXTRA_DIAGONAL
1493        - GM_BOLUS_ADVEC )
1494      * However, wrong gradient check problem remains unsolved.
1495      * New CPP options have been introduced for different
1496        tapering schemes
1497    o external_fields_load now part of differentiation list
1498    o pressure needs multiple storing;
1499      would be nice to have store_pressure at beginning or
1500      end of forward_step, e.g. by having phiHyd global (5-dim.)
1501      (NB: pressure is needed for certain cases in find_rho,
1502      which is also invoked through convective_adjustment).
1503    o recomputations in find_rho for cases
1504     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1505    o #define ATMOSPHERIC_LOADING should be differentiable
1506    o ini_forcing shifted to begining of initialise_varia
1507    o Incorporating QNVS line search routines into MITgcm
1508      (this is separate code, and therefore not under pkg)
1509      lsopt/, optim/
1510    o Updated verification/carbon/
1511      - #define GM_VISBECK_VARIABLE_K
1512      - GM_taper_scheme    = 'ldd97'    
1513    
1514    checkpoint46n_post
1515    Merging from release1_p8:
1516    o verification/natl_box:
1517      updating new external_fields_load routine
1518    o New package: pkg/seaice
1519      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1520      The sea-ice code is based on Hibler (1979-1980).
1521      Two sea-ice dynamic solvers, ADI and LSR, are included.
1522      In addition to computing prognostic sea-ice variables and diagnosing
1523      the forcing/external data fields that drive the ocean model,
1524      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1525      The implied surface heat flux is then stored in variable
1526      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1527      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1528      non-local transport term.  Because this call precedes model
1529      thermodynamics, temperature under sea-ice may not be "exactly" at
1530      the freezing point by the time theta is dumped or time-averaged.
1531      N.B.: fairly large differences in accuracy occur across
1532            different platforms/compilers; comparison between
1533            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1534            generated output gives:
1535       T           S           U           V
1536      C D M    c        m  s        m  s        m  s        m  s
1537      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1538      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1539      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1540    
1541      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1542    o GAD:
1543      - generated new common blocks to account for call of
1544        same gad routines with differing traceridentities
1545        (needed to modify tracerIdentity indices in GAD.h)
1546      - generated separate common blocks for case useCubedSphereExchange
1547        (Department of Futurology)
1548      - parameter lists to gmredi_?transport: added tracerIdentity
1549      - added new key indices to tamc.h
1550    o external_fields_load:
1551      - added this routine to TAF list
1552      - needed to make some common blocks global and additional storing
1553        along the same lines as exf package (checkpoint_lev?_directives.h)
1554    o exf:
1555      updated external forcing package
1556      - bug fixes carried over from ecco-branch
1557        (missing OBCS_OPTIONS.h in two routines)
1558      - enable easy to use "no forcing".
1559      - added exf I/O for atmospheric loading
1560      - added exf I/O for runoff data
1561      - transfered scaling between exf <-> MITgcm to exf namelist
1562    o Adding new verification experiment global_with_exf.
1563      This verification experiment is almost identical to the
1564      global_ocean.90x40x15 experiment, except that it uses
1565      the exf (and cal) package instead of the
1566      external_fields_load routine (cf README file).
1567    
1568    checkpoint46m_post
1569    o modified testscript to return -- when there are no lines of "%MON" output
1570    o added new flag "quasiHydrostatic" for QH mode
1571      and new routine quasihydrostaticterms()
1572    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1573      New routine: mom_u_coriolis_nh()
1574    o fixed sign of non-hydrostatic metric terms in u and v equations.
1575      Depend on correct sign of gravitySign.
1576    o added work.pc* to .cvsignore in aim directories using ifc
1577    o introduced flag for controllin non-hydrostatic metric terms
1578    o removed gravitySign from PARM04
1579    o switched to g77/ifc from pgf77 in aim experiments
1580    
1581    checkpoint46l_post
1582    o made convective adjustment work with pressure coordinates:
1583     - changed the direction of k-loop in convective_adjustment.F for the
1584       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1585     - adjusted the reference pressure k-index in convective_adjustment.F
1586     - adjusted the convection condition in convect.F (in analogy to
1587       calc_ivdc.F)
1588     - convective_adjustment no longer computes anything on the halos
1589     - removed the warnings about negative salinity from find_rho.F and
1590       find_alpha.F; instead the new routine look_for_neg_salinity, called
1591       at the beginning of find_rho, find_alpha, and find_beta, does a
1592       check of the entire slice, if CPP-option
1593       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1594    checkpoint46l_pre
1595    
1596    checkpoint46k_post
1597    o fixed the verification/global_ocean.90x40x15 experiment:
1598     - new bathymetry (the world according to A., JMC, and M.)
1599     - new initial fields and forcing fields (*.bin files)
1600     - new POLY3.COEFFS (for the next release one should switch to a full
1601       equation of state: JMD95P or MDJWF)
1602     - fixed several errors and redundancies in the data file
1603     - experiment uses looped cells
1604     - added matlab directory with diagnostic scripts for plotting of output
1605    
1606    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1607     - read AIM physics parameters from a file (data.aimphys)
1608     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1609    
1610    checkpoint46j_post
1611    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1612    o move wVel computation at the end of the time step, in S/R integr_continuity
1613    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1614    o update timeave pkg for wVel diagnostic.
1615    checkpoint46j_pre
1616    
1617    checkpoint46i_post
1618    o Clean up AIM package (and keep the results unchanged):
1619      include CPP_OPTION and use IMPLICT NONE in all routines ;
1620      declare all the variables _RL ; use _d 0 for all numerical constants.
1621      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1622    
1623    checkpoint46h_post
1624    o cleaned up the use of rhoNil and rhoConst.
1625      - rhoNil should only appear in the LINEAR equation of state, everywhere
1626        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1627        and the dynamical equations are all divided by rhoConst
1628    o introduced new parameter rhoConstFresh, a reference density of fresh
1629      water, to remove the fresh water flux's dependence on rhoNil. The default
1630      value is 999.8 kg/m^3
1631    o cleanup up external_forcing.F and external_forcing_surf.F
1632      - can now be used by both OCEANIC and OCEANICP
1633    checkpoint46h_pre
1634    
1635     Added code to convert surface volume flux (fresh water) into
1636     a mass flux when using P coordinates in the ocean (OCEANICP).
1637     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1638    
1639    checkpoint46g_post
1640    o Include a new diagnostic variable phiHydLow for the ocean model
1641      - in z-coordinates, it is the bottom pressure anomaly
1642      - in p-coordinates, it is the sea surface elevation
1643      - in both cases, these variable have global drift, reflecting the mass
1644        drift in z-coordinates and the volume drift in p-coordinates
1645      - included time averaging for phiHydLow, be aware of the drift!
1646    o depth-dependent computation of Bo_surf for pressure coordinates
1647      in the ocean (buoyancyRelation='OCEANICP')
1648      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1649        Theta, Salinity, and Pressure in the parameter list. This routine is
1650        presently contained in find_rho.F. This routine does not give the
1651        correct density for 'POLY3', which would be a z-dependent reference
1652        density.
1653    o cleaned up find_rho
1654      - removed obsolete 'eqn' from the parameter list.
1655    o added two new verification experiments: gop and goz
1656      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1657    checkpoint46g_pre
1658    
1659    checkpoint46f_post
1660    o Enable tangent linear (forward mode) gradient checks:
1661      - extended active file handling to g_... files
1662      - added TANGENT_SIMULATION to theSimulationMode
1663      - extended grdchk package accordingly
1664    o added tangent linear setup in verification/carbon/code_ftl
1665    o added adjoint setup in verification/front_relax/code_ad
1666    
1667    checkpoint46e_post
1668    o Added new equation of state -> MDJWF
1669      - EOS of McDougall et al., 2002, JAOT, submitted
1670      - caveat: the equation of state is only valid for a smaller (more
1671        realistic?) range of values than JMD95P/Z and UNESCO
1672      - added masks to the calculation of pressure in store_pressure
1673      - added more check values for density in check_eos (ini_eos.F), some of
1674        the old check values are out of the range of the MDJWF-eos, so don't
1675        expect perfect matches for those
1676    checkpoint46e_pre
1677    
1678    checkpoint46d_post
1679    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1680      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1681      case of pressure coordinates. eosType='JMD95Z' in
1682      combination with buoyancyRelation='OCEANICP' now causes an error.
1683    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1684      in find_alpha/beta.
1685    checkpoint46d_pre
1686    
1687    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1688      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1689    
1690    checkpoint46c_post
1691    o Changes necessary for ocean in p-coordinates
1692     -  Added new buoyancy relation = 'OCEANICP'
1693     -  Added new parameters = gravitySign (this used to be contained inside
1694        the factor dRdZ which I added when we first switched to R coordinates).
1695     X GM/Redi is not compatible (yet)
1696     X bottom drag and no-slip need to be debugged.
1697    checkpoint46c_pre
1698    
1699    checkpoint46b_post
1700    o Added new equation of state -> JMD95Z and JMD95P
1701      - EOS of Jackett and McDougall, 1995, JAOT
1702      - moved all EOS parameters into EOS.h
1703      - new routines ini_eos.F, store_pressure.F
1704    o Added UNESCO EOS, but not recommended because it requires
1705      in-situ temperature (see JMD95)
1706    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1707      unesco.f to be used with POLY3
1708    checkpoint46b_pre
1709    
1710    checkpoint46a_post
1711    o Added (atmospheric) pressure loading
1712      - new field in FFIELDS.h, etc...
1713      - new cpp flag ATMOSPHERIC_LOADING
1714    o Changed hFacC to _hFacC in calc_phi_hyd.F
1715    o Added SHORTWAVE_HEATING to some files for consistency
1716    checkpoint46a_pre
1717    
1718    checkpoint46
1719    further merges from release1_p5
1720    o new ctrl package
1721      - adopted from ECCO environment to enable optimization
1722      - added Eliassen Palm fluxes to controls
1723    o added Eliassen Palm flux controls to gradient check package
1724    o cost package
1725      - Compatible with new ctrl package
1726      - added Eliassen Palm cost hooks
1727      - modif's of existing cost functions
1728    o Adjoint-related bug fixes in kpp:
1729      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1730      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1731    o autodiff package
1732      - flow directives:
1733        + new for S/R do_the_model_io
1734        + enhanced for S/R checkpoint
1735        + new gmredi.flow
1736      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1737        disable adcommon.h/g_common.h by default.
1738      - fixed problem for adjoint of global_max
1739    o modified verification/carbon/
1740    o New setup for adjoint of global_ocean
1741    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1742    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1743    o incorporated hooks for sponge layer code (external_forcing.F)
1744    
1745    checkpoint45d_post
1746    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1747    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1748      (affects plume_on_slope "cg2d" output)
1749    o add new parameter deltaTfreesurf for free-surface time stepping
1750    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1751    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1752    o change phiMin in exp1 (to agree with documentation)
1753    o add new flags:
1754     - T,S forcing inside/outside Adams-Bashforth
1755     - turn off temp,salt advection and/or forcing
1756     - for each tracer, define internal flag for multiDimAdvection & A-B
1757    o monitor: change definition of KE to check conservation of Energy
1758    
1759    checkpoint45c_post
1760    o Removed f90 comments ("!")
1761    o Modified initialisations to enable exf package for MITgcm
1762      (without invoking ECCO_PACKAGE).
1763    o modifications to gradient check package (Martin Losch)
1764      - enable centered differences
1765      - modified format of standard output
1766    
1767    checkpoint45b_post
1768    o cleaned exchange calls in cg2d
1769    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1770    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1771      to configure barotropic setup (Martin Losch)
1772    o moved some initialisations within bi,bj loop in dynamics
1773      (TAF flow dependency)
1774    o in initialise_varia, moved call packages_init_variables
1775      before convective_adjustment_init
1776      (corresponding adjustment of TAF tape initialisation).
1777    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1778    
1779    checkpoint45a_post
1780    o compute Rho over the whole domain (extend iMin,jMin indices)
1781    o specific exchange for X-slice domain (case Ny=1)
1782    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1783    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1784    
1785    checkpoint44h_post = checkpoint45
1786    o Fix to restore differentiability:
1787      place at which packages_init_variables is called in
1788      initialise_varia is crucial for reverse control flow.
1789    o modifications in GMRedi to enable stable adjoint
1790      (corresponding modif's in thermodynamics, dynamics)
1791    o added missing hook for sponge layer code in external_forcing
1792    o modified test cost functions
1793    o storing in gad_advection (plus removal of write(0,*)!
1794    o missing headers TR1.h added in convective_adjustment routines
1795    o errorMessageUnit set non-equal zero in eeboot
1796      (conflict on some platforms, e.g. IBM SP3)
1797    o modified carbon verif.
1798    
1799    checkpoint44h_pre
1800    o vertical grid option: allow to put the Interface at the middle between
1801      2 cell-centers ; replace delZ in pkg/kpp by drF.
1802    o GM Advective form: Tracers are advected using the residual transport (=
1803      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1804    
1805    checkpoint44g_post
1806    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1807      results) ; ifdef missing in thermodynamics.F
1808    
1809    checkpoint44f_pre,checkpoint44f_post
1810    o added PTRACERS package
1811      This allows an arbitrary number of passive tracers to be integrated
1812      forward simultaneously with the dynamicaly model.
1813      + Implemented so far:
1814        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1815        - I/O and checkpointing
1816        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1817      + Not implemented so far:
1818        - KPP
1819        - OBCS
1820      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1821        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1822        line in data.pkg.
1823      + This package is disabled by default since it increases storage.
1824    
1825    
1826    o testscript: added -cleanup option
1827    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1828                 b) enable to filter 2D fields.
1829    
1830    checkpoint44e_pre,post
1831    o re-wrote convective adjustment to use pre-calculated weights
1832      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1833      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1834      Original calls to convect() still in place.
1835    
1836    chkpt44d_pre,post
1837    o added missing EXCLUDE_MONITOR flags
1838    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1839      (incompatible typ in MIN/MAX expressions caused problems
1840      on IBM SP3)
1841    o in genmake added variable MAKEDEPEND
1842      plus resetting for case SunOS
1843    o added timer_stats.c routine for IBM SP3
1844    o removed variables in dynamics
1845    !!! I forgot to create tag chkpt44d_pre !!!
1846    !!! But chkpt44d_pre = chkpt44c_post    !!!
1847    
1848    o real fresh water flux implemented with non-linear free-surface.
1849    
1850    chkpt44c_pre,post
1851    o few fix (mask in shap_s2, EmPmR in external_field_load,
1852      USE_NATURAL_BCS in solve_for_P);
1853    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1854    
1855    checkpoint44b_pre/_post
1856    o merge of relevant stuff from the ecco-branch:
1857      - genmake: removed $S64 overwrite for case SunOS
1858      - pkg/exf: update and corrections for field swapping and obcs
1859      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1860                  harmonized between ECCO and MITgcm
1861      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1862                      updated checkpointing_lev... lists for obcs
1863      - model/src: minor changes in forward_step, plot_field
1864                   added directive for divided adjoint in the_main_loop
1865      - pkg/mdsio: added mdsio_gl_slice
1866    
1867    o check parameters & config (chkpt44a_pre,post)
1868    o OBC and NonLin_FrSurf.
1869    
1870    checkpoint44
1871    o fix bug in mom_vi_del2uv
1872    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1873    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1874    o update AIM experiments (NCEP input files)
1875    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1876    o added some stuff for AD
1877    
1878    checkpoint43
1879    o added two new advection tests
1880    o added global 4x4 degree ocean test
1881    o added test of H&S94 with free surface on cube
1882    o some final mods for gradient check, adjoint,...
1883    
1884    checkpoint42
1885      Fixed AD-related problems:
1886    o Store directives up-to-date with re-arranged Adams-Bashforth
1887      (mainly thermodynamics.F)
1888    o New store directives for multi-dim. advection schemes
1889      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1890      * new common block and key passkey
1891      (mainly gad_advection.F)
1892    o Modified store directives for split of dynamics/thermodynamics
1893      for the case ALLOW_KPP
1894    o Cleaned argument list for timestep_tracer.F
1895    
1896    checkpoint41
1897    o re-formatted/added comments in prologues of key subroutines
1898      to work with protex
1899    
1900    checkpoint40
1901    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1902    o added FLT (floats) package from Arne along with demo. experiment
1903    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1904      implementation of forward-in-time forcing terms
1905    o more mods for non-linear free-surface including new variable
1906    o modified multi-dim method to work on cube
1907    o bug fix in KPP (from DM)
1908    
1909    checkpoint40pre9
1910    o added DST advection schemes
1911    o fix MPI bug on SGI's
1912    o modifications for non-linear free-surface
1913    o fixed conditionals for fixed flow/passive tracer only mode
1914    o added tension/strain form of stress tensor
1915    o changes to commenting of arguments for TAF/TAMC
1916    o added/updated many matlab scripts
1917    o added multi-dimensional advection method for tracers
1918      
1919    checkpoint40pre8
1920    o new package rw/
1921      Added method for dumping intermediate local arrays:
1922      mdsio_writetile - same as mdsio_writefield except works from inside
1923                        bi,bj loop
1924      mdsio_writelocal - same as mdsio_writetile except works for local
1925                         arrays
1926      write_local_r? - higher-level wrapper for mdsio_writelocal
1927      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1928      Example given at end of mom_vecinv.F that dumps some local arrays.
1929    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1930      control flux-form versus vector invariant code.
1931      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1932      or genmake -DISABLE ...
1933    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1934      (additional storing is now needed for case vecinv;
1935      currently nothing implemented to switch this storing off
1936      in case fluxform is used since no CPP flag available).
1937    
1938    checkpoint40pre7
1939    o bug fix in dynamics.F
1940      calc_viscosity called before k=1,Nr loop.
1941    o added some #ifdef's ALLOW_PASSIVE_TRACER
1942    o cleaned initialisations in ctrl_map_ini
1943      related to TAF
1944    
1945    checkpoint40pre6
1946    o split dynamics into thermodynamics & dynamics
1947    o corresponding split of calc_diffusivity into
1948      calc_diffusivity, calc_viscosity
1949      (kpp_calc_diff, kpp_calc_visc).
1950    o Added diffkr, kapgm to control variables
1951    o bug fix in gmredi_slope_limit for ldd97
1952    
1953    checkpoint40pre5
1954    o proper initialization of Adams-Bashforth time stepping
1955      + uses forward step for very first step of model (iter=0)
1956    o re-generated *all* output since almost all output is modified by this
1957      change (sorry but we've been putting this one off for about 2 years)
1958      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1959        *not* regenerated since they are already out of date and I don't
1960        want to create the impression that they are suddenly working.
1961    o removed KAP stuff for DEC's
1962    o modified/added many .cvsignore files in */code and */input
1963    o added new expt "solid-body.cs-32x32x1"
1964      + this uses an alternative form of ini_curvilinear_grid.F which
1965        is not necessarily any better than the current one...
1966    
1967    checkpoint40pre4
1968    o added re-initialisations of utrans,vtrans,rtrans in
1969      calc_common_factors which are crucial for TAF.
1970    o extended iMin,jMin range for calc_common_factors,
1971      calc_diffusivity
1972    o added option ALLOW_PASSIVE_TRACER
1973    o a few minor updates and fixes
1974    
1975    checkpoint40pre3
1976    o created calc_gtr1.F for gad package
1977    o split the_main_loop and re-introduced forward_step
1978    o some recomputations of nIter0 for TAMC
1979    
1980    checkpoint40pre2
1981    o Updated to latest branch of AJA, JMC
1982    o Added gradient check package
1983    o Added routines for passive tracer handling
1984    o Added carbon sequestration sensitivity experiment
1985    
1986    checkpoint39
1987     o Modifications and fixes to support TAMC
1988       (mainly missing or wrong directives)
1989     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1990       in addummy_in_stepping
1991     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1992     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1993     o Included following packages:
1994       cal: calendar
1995       exf: external forcing
1996       ecco: essential routines to control use of cal, exf
1997             (NB: this is not the full ECCO environment)
1998     o disabled some packages by default in genmake
1999    
2000    checkpoint38
2001     o see notes_c37_adj.txt
2002     o corrected wrong layer index in external_forcing_t
2003     o replaced the_main_loop/forward_step by the_main_loop
2004     o removed forceoutput from write_state
2005       (replaced criteria for initial/final state)
2006     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2007    
2008    checkpoint37
2009     o mdsio.F routine split and packaged in pkg/mdsio
2010       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2011        used unless genmake -disable=mdsio)
2012     o allow a more precise surface-geopotential gradient for the atmosphere
2013       taking into account the change in space of Alpha (=1/rho) at the surface.
2014     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2015       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2016     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2017       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2018       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2019     o Time-Average diagnostics defined as a pseudo package "timeave".
2020     o pickup files : old pickup (before c35) did not work with new code (c35
2021       and after) unless activating 2 commented lines in initialise-varia.
2022     o Non-Hydrostatic pickup file Pb fixed.
2023     o bug with Rigid-lid version (since c35) fixed.  
2024    
2025    checkpoint36
2026     o implement Crank-Nickelson barotropic time-stepping
2027     o recover Time-Average diagnostics
2028     o fix Pb in checkpoint (PR#19)
2029     o AIM become a standard package ; clean unused CPP_kees
2030    
2031    checkpoint35
2032     o subtantial rewrite of dynamics.f
2033     o allows staggered time-stepping
2034     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2035     o added bottom drag (linear + quadratic)
2036    
2037    checkpoint34
2038     o Modified exchange routines for correct reverse simulation.
2039     o Added verification output to comply with bug fix in impldiff.F
2040       as of c33 (exp2, natl_box).
2041     o Corrected store directives in dynamics.F
2042     o Corrected array boundaries in impldiff.F
2043     o Corrected array dimensions in gmredi.
2044       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2045     o Added routine GLOBAL_SUM_INT to global_sum.F
2046     o Added mdsio_gl.F for ECCO purposes.
2047    
2048    checkpoint33
2049     o Fixed bug in lower BC in impldiff.F
2050     o Fixed confusion about units of forcing arrays in FFIELDS.h
2051       namely Fu,Fv,Qnet,Qsw,EmPmR:
2052       - Removed verification/natl_box/code/external_fields_scale.F
2053         (did not differ from that in model/src)
2054       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2055         (see FFIELDS.h for description)
2056       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2057         kpp_calc.F and kpp_transport_t.F
2058       - Removed model/src/external_fields_scale.F and calls to it
2059       - verification/natl_box uses flux data with "atmospheric" sign so
2060         a special version of external_fields_load.F is used to
2061         change the data as it's read in. This way, the arrays
2062         have the right units and signs at all times tha a user could
2063         possibly use them.
2064     o Corrected genmake to delete a temporary file during configuration
2065    
2066    checkpoint32
2067     o Scaling of forcing fields moved from external_forcing.F to
2068       external_fields_scale.F, called directly after loading fields.
2069     o Surface relaxation terms added to surface tendency fields in
2070       extra subroutine.
2071     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2072       fields.
2073     o Changes in GMRedi to comply with packaging structure.
2074     o Modifications and bug fixes in KPP package.
2075     o Verification experiment for KPP added (verification/nat_box/)
2076    
2077    checkpoint31
2078     o Packages interface brought in line with defined standard
2079       -> new routines packages_...F
2080       -> changes in initialise_fixed.F, initialise_varia.F
2081       -> enables initialisation interface for ECCO package
2082     o Rescaling of external forcing fields immediately after read
2083       (removed from external_forcing.F)
2084       -> new: surface_fields_scale.F
2085       -> affects ini_foorcing.F, external_fields_load.F
2086     o Computation of surface tendencies before tendency updates.
2087       -> new: external_forcing_surf.F
2088     o Change of variable names useGMRedi, useKPP, useECCO
2089     o Further changes in dynamics.F, impldiff.F for TAMC
2090     o Tested for experiments 0, 2, 4.
2091       - not yet tested for GMRedi.
2092       - not yet tested for KPP.
2093    
2094    checkpoint30
2095     o Updates for OBCs
2096     o New experiment for test OBCs (internal_wave)
2097     o New output.txt in verification/exp4/results/
2098     o Updates for KPP: calculation of viscosity corrected, new variables
2099       kpp_dumpFreq and kpp_taveFreq
2100     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2101       and entry for T90 in genmake
2102    
2103    checkpoint29
2104     o packaged KPP and GM/Redi
2105    
2106    checkpoint28
2107     o Corrected initialization of hFacMin for difference vertical coordinates
2108     o Modified calculation of partial cell thickness to more robust algorithm
2109     o config_summary.F: replaced write_1D_... by write_0D_...
2110       read_write.F: added subroutines write_0D_...
2111     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2112       included some initialisations required for TAMC.
2113     o routine calc_isoslopes: modified sqrt computation to make it
2114       differentiable for zero argument.
2115     o routines dynamics, impldiff:
2116       included store directives and tape key computations required for TAMC.
2117     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2118    
2119  checkpoint27  checkpoint27
2120   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
2121     formulation works properly with variable resolution.     formulation works properly with variable resolution.

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