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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.452 by jmc, Sat Feb 12 23:13:27 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 pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
7    
8    checkpoint57d_post
9    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
10    o modify verification/ideal_2D_oce so that it tests the creation of mnc
11      output from the diagnostics package
12    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
13    o make genmake2 more portable by using ".$FS" instead of ".f" for more
14      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
15    o add coordinate variables to the MNC output from the diagnostics package
16    o change MNC-flags default value: true when useMNC=TRUE
17    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
18      the ability (off by default) to read the grid information using MNC
19    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
20    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
21    o do snap-shot diagnostics at the middle of the time-interval (instead of
22      at the end).
23    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
24      new test for AIM with thSIce + slab-ocean
25    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
26    o move state variable diagnostics to the beginning of the time step ;
27      (note: still needs some work specially for snap-shot diagnostics)
28      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
29    
30    checkpoint57c_post
31    o Change testing option (-ieee) to get closer agreement between g77 & ifort
32    o generate new output.txt files on faulks with g77 & the new -ieee option
33    checkpoint57c_pre
34    
35    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
36      update output.txt of exp. global_ocean.90x40x15
37    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
38      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
39    o add saltFlux(+File) forcing capability with periodicExternalForcing
40    o allow to use pkg diagnostics for GM-Redi & ThSIce output
41    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
42    o improvements for the MNC output from DIAGNOSTICS:
43      - correct handling of the unlimitied dimension
44      - all dims now have associated coordinate variables
45      - variables located at U, V, and Corner ("Z") points are now written
46        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
47        *all* data points are output
48    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
49    o added pkg/seaice/seaice_monitor.F
50    o mdsio_readfield.F can now read files visible only to master MPI process.
51    o pkg/seaice: some test code for ice-modified ocean stress
52    o exf_getffields interpolation defaults to bilinear for all scalar forcing
53      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
54      spurious negative numbers for precipitation and humidity.  Will cause
55      some small numerical differences for integrations using pkg/exf/exf_interp.F.
56    o pkg/ctrl/
57      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
58        May be enabled via doPackDiag
59      *  introduce z-scaling of
60         + gradient (doZscalePack) and
61         + control (doZscaleUnpack)
62    o pkg/mdsio/
63      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
64      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
65    
66    checkpoint57b_post
67    o simplify options in diagnostics_fill arguments (remove weird combinations)
68    o fix MNC coordinate variables so that they now contain per-face index
69      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
70      general, EXCH2 grids are only aligned to a "local" coordinate system
71    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
72    o Implement instantaneous output within pkg diagnostics:
73      setting a negative frequency in data.diagnostics produces
74     "snap-shot" output (as opposed to time-average if freq > 0)
75    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
76      NOTE: change ptracer diagnostics name: use 2 characters to work with
77            more than 9 tracers. Add also diagnostics of advect & diffus flux.
78    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
79      becomes the coordinate variable for the 'T' dimension
80    o add CF-style coordinate variables to MNC
81      - just a first cut:  numbers are meaningless on the cubesphere and
82        missing along the T axis but otherwise it works!
83    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
84    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
85    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
86      this is based directly on what the model compute, so that the content of
87      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
88    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
89    o clean up build options files for SunOS, in particular
90      - remove -traditional from xmakedepend
91      - change -xarch=v9 to -xarch=native for f77
92      - restore use of make (not gmake)
93      - add CC=gcc if using g77
94    o changes per discussion of AM, JMC, & EH3 today:
95      - move redundant "grid" variables out of "state" -- in preparation of
96        creating proper CF-style coordinate variables and in recognition
97        that any/all grid variables can be easily copied (eg. w/NCO) from
98        the grid files into any of the other NetCDF files
99      - *always* output grid variables with MDSIO (this will eventually be
100        changed)
101      - output MNC grid file if useMNC is true
102    o every instance of _END_MASTER() has been found and replaced with
103      _END_MASTER( myThid ) in order to satisfy certain picky Sun
104      preprocessors
105    o re-arrange diagnostics pkg initialisation:
106     - allow each package to extend the available diagnostics list
107     - add some checking and fix small problems (multi-threaded, ...)
108     - new S/R diagnostics_fill (replace fill_diagnostics):
109       look through the short list of active diag. (instead of the long list)
110       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
111    
112    checkpoint57a_post
113    o this set of changes restores TAMC compatibility
114      tested for global_ocean.90x40x15 adjoint on trough
115      (what a pain)
116    
117    checkpoint57a_pre
118    o some modifs in tools/build_options for sunos
119    o call ctrl_pack for ctrl at end for optimcycle=0
120    
121    checkpoint57
122    o add horizontal bi-harmonic viscosity for vertical velocity
123      - new parameter viscA4W (defaults to viscA4)
124      - affects only non-hydrostatic code
125      - to be done: no-slip lateral boundary conditions
126    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
127    o implement Implicit Vertical advection for pTracers
128    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
129      (implemented also for implicit vertical diffusion & advection)
130    o OBCS: extend application of tracer open boundary conditions
131      to a strip beyond the boundary of width Olx/Oly
132    o add call monitor to TAF set of required calls (flow directives)
133      and include in natl_box_adjoint
134    o untangle a few ifdefs related to cost, ctrl, autodiff
135      untangel a few ALLOW_ECCO_OPTIMIZATION
136    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
137      (theta2, salt2 in ecco_cost_weights)
138    
139    checkpoint56c_post
140    o OBCS as control variables
141      - update ctrl_ad_diff.list, obcs_ad_diff.list
142      - remove balance of obcs controls from default
143      - fix index bug nobcs in ctrl_init
144      - fix dummy fields filen in ctrl_pack
145      - add dummy weights for obcs
146    o lsopt: comment out fort.94 output
147    o optim:
148      - remove unnecessary header files
149      - adjusted namelists
150      - add xerbla.F to Makefile
151    o exf:
152      - multiple modifications of exf_check_range
153      - unit change in exf_init_runoff from [m/year] to [m/s]
154    o mdsio:
155      - i/o-vector change debugLevel from debLevA to debLevB
156    
157    checkpoint56b_post
158    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
159      is called from DO_THE_MODEL_IO
160      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
161      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
162      - clean up PTRACERS_WRITE_TIMEAVE a little
163    o add another verification experiment that tests both the cfc-pkg and
164      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
165      reactive tendencies treated inline with regular timestepping
166    o testreport previously did a lousy job of comparing small numbers, so
167      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
168      implemented in the little c-progam tmp_cmpnum.c which is embedded in
169      testreport.
170    o ptracers_monitor: bug fix for MPI
171    
172    checkpoint56a_post
173    o GCHEM: finish reorganizating the package
174      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
175        (introduces another 3D-array for each passive tracer, but only if
176        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
177        gchemTendency is not needed because the timestep is done separately)
178      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
179      - GCHEM is now---more or less cleanly---separate from PTRACERS
180      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
181        so clear to me how that should be done in a general way.
182    o CFC: improve formatting of output in CFC_ATMOS
183    o PTRACERS:
184      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
185        that ALL experiments with ptracers enable can be checked. This makes
186        GCHEM_MONITOR obsolete.
187      - include a runtime parameter PTRACERS_monitorFreq that defaults to
188        monitorFreq
189      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
190    o add PTRACERS (PTR0[1-5]) to testreport output
191    o exf_check_range:
192      * default changed to .TRUE.
193      * will check values for niter0 if debLevA, every timestep if debLevB
194      * STOP in exf_check_range if 'out of range'
195      * range chosen generous to allow for potential extema
196      TBD: a version with stricter range
197           permitted range would be runtime parameters
198    o GMredi:
199      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
200      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
201      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
202    o GCHEM:
203      - move call to GCHEM_FORCING_SEP, so that it is now called before
204        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
205      - introduced a useGCHEM runtime flag and applied it everywhere.
206      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
207        this flag is now only visible within GCHEM-pkg routines.
208      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
209        be replaced by a 3D array that is computed before thermodynamics; for
210        this, the tracer ID iTracer had to be included into the parameter list
211        of ptracers_forcing
212      - set up forward_step to call gchem_forcing, that will replace
213        gchem_forcing_int in ptracers_forcing
214      - cleaning up
215    o small cleaning of exch2: remove files that are also in eesupp/src
216    
217    checkpoint56
218    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
219    o mnc: cleanup "full" files--fixes out-of-memory problem
220    o ECCO-GODAE
221      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
222      * fully merged and updated from SIO code
223        windstress sign change affects
224        - exf_inscal_[u/v]stress
225        - sign of xx_tau[u/v] adjustments
226        - signs in cost_scat
227      * ctrl_get_gen: avoid update of tau[u/v] for first few days
228      * natl_box_adjoint updated and compressed
229      * 2-level checkpoint switch added
230        (tested in EXP. 1 of natl_box_adjoint)
231      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
232    o SVD
233      * first complete, non-hacked version for SVD calculations
234      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
235        performed via direct access files admtlm_vector.it????
236        (via ctrl_[un]pack)
237      * optimcycle is used for ARPACK iteration counter
238        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
239      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
240        and add linear transforms where necessary
241      * controls are initial/final SST, SSS (can be extended; need to check
242        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
243    o mdsio: filename info to both stderr, stdout
244    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
245      from sign change
246    
247    checkpoint55j_post
248    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
249      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
250    o add consistent build directories and .cvsignore files to verification
251    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
252    o make all subroutines 30 or less characters in length for certain older
253      compilers to work (a thorough search only turns up two routines in
254      pkg/ptracers)
255    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
256      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
257    
258    checkpoint55i_post
259    o change arrays for total vertical diffusivity (2.D if explicit,
260      3.D if implicit) ; each ptracer uses its own background value.
261    o added mnc/NetCDF output capability to ocn_compon_interf
262      - added bits to verification/cpl_aim+ocn so that it can run on
263        ITRDA and other clusters without the mpirun "-wd" option
264    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
265      configuration
266    o give MNC the ability to create additional files rather than
267      exceeding a specified file size limit "MNC_MAX_FILESIZE"
268      - the default is just less than 2GB which is a practical limit
269        on many systems
270    o Compute the non-local term using either KPP vertical diffusivity (=default)
271       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
272    
273    checkpoint55h_post
274    o add verification test "vermix"
275    o remove all the *_ioinc flags and replace with the single global
276      outputTypesInclusive flag
277    o allow to set a vertical profile of vertical diffusivity for T & S
278    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
279    o useMNC moved from data.mnc to data.pkg
280    
281    checkpoint55g_post
282    o Renaming carbon AD experiments to comply with testreport conventions
283    o Updating adjoint of Held-Suarez hs94.1x64x5
284    o Fixing directives for non-ECCO forward_step, after ECCO directives
285      have been fixed to avoid recomp. of do_oceanic_phys
286      Works well for global_ocean.90x40x15,
287      but recomp. issue remains for carbon
288    o Updating adjoint output for natl_box_adjoint after
289      pkg/ecco has been modified (see taga c55d_post)
290    
291    checkpoint55f_post
292    o rename to timeave_init_fixed
293    
294    checkpoint55e_post
295    o some delicate re-shuffle of store directives to avoid one
296      extra call of do_oceanic_physics
297      affects ecco_the_main_loop.F, do_oceanic_physics.F
298      checkpoint_lev1_directives.h
299    o NB: this may break global_ocean adjoint temporarily,
300      but it is clear how to fix it. Will do later, need this now.
301    
302    checkpoint55d_post
303    o ECCO specific cost function terms (up-to-date with 1x1 runs)
304    o ecco_cost_weights is modified to 1x1 runs
305    o modifs to allow observations to be read in as
306      single file or yearly files
307    o enable to read exf forcing fields as either
308      single file or yearly files (flag useExfYearlyFields)
309    checkpoint55d_pre
310    
311    o switch between 2-level and 3-level checkpointing
312    o add ability of MNC to write local and "partial" (eg. 2D slices where
313      the full 3D field is never actually stored) arrays to NetCDF files
314      with the correct (that is, the complete multi-dimensional) set of
315      array indicies
316      - used in mom_vecinv() to write the diagFreq output
317      - tested (demonstrated) in verification/aim.5l_cs
318    o further mnc-ification
319      - add verification/lab_sea to the list with mnc setups
320      - fix undefined mnc v-names in cd_code
321      - add kpp to mnc output (both snapshot and timeave)
322    o non-hydrostatic code
323      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
324        in calc_gw.F
325      - defaults to viscAh
326      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
327        friction or Leith) in non-hydrostatic mode, as long as there is
328        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
329    o pkg/cost
330      extend simple cost functions to treat time mean quantities
331      (T,U,V) via cost_accumulate_state from cost_tile
332    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
333        be 2 times larger than the minimum size the advection scheme requires.
334        now get a perfect conservation of salt in advect_cs test-exp (updated)
335    o GGL90 (Gaspar's TKE mixed layer)
336      - add horizontal diffusion of TKE, requires exchanges in
337        do_fields_blocking_exchanges, horizontal diffusivity is zero by
338        default. In OPA there is no horizontal diffusion of TKE but the
339        mixing coefficients are computed from a horizontal average of TKE of
340        6 points or so. I think that diffusion has a little more physical
341        justification.
342      - clean up ggl90_calc in the hope of reducing memory usage (this hope
343        was in vain)
344      - mask tke-variable in ggl90_init
345    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
346    o fix biharmonic diffusion on CS-grid.
347    o more obcs stuff
348      - added obcs_external_fields_load as an alternative to the EXF-pkg option
349        for reading boundary values. This routine is called from
350        obcs_prescribe_read
351      - updated obcs_check
352      - changed sponge layer relaxation parameter units for days to seconds
353      - turned off sponge layer by default
354      - changed argument list of OBCS_CALC to myTime+deltaTclock
355      - fixed about 35 bugs in obcs_external_fields_load
356    
357    checkpoint55c_post
358    o obcs stuff
359      - new runtime flags useOBCSprescribe, useOBCSbalance
360      - re-arranged obcs_calc
361      - moved exf_getobcs to obcs_prescibe_read
362        obcs_prescibe_read is called after ORLANSKI stuff
363        and independent of it (executable can contain all).
364      - updated obcs_check
365      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
366        These may be necessary only if tangential velocities are
367        prescribed at OB, not sure, needs testing.
368    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
369      which simplifies the calls and passes the ifc check-bounds test
370    
371    checkpoint55b_post
372    o add a 2D scalar, Z location, exchange_2 routine.
373    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
374      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
375      affects advect_cs results (for the wrong reason): update output.txt
376    o use a more standard discretization for biharmonic viscosity ;
377     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
378      affects results of dome set-up: update output.txt
379    o fix gad_advection.F (CubedSphere part), back to version 1.23
380    o fix bug in mom_vi_del2uv.F (CubedSphere part).
381    
382    checkpoint55a_post
383    o merged code to
384      * prescribe/read time-dependent open boundaries
385        (works in conjunction with exf, cal)
386      * sponge layer code for open boundaries
387      * each boundary N/S/E/W now has its own CPP option
388        (healthy for the adjoint)
389    
390    checkpoint55
391    o up-to-date adjoint of previous breaks
392      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
393      - global_ocean_ebm: adjoint still needs fix (TLM ok)
394      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
395      - carbon: * remove tr1-related adjoint verification
396                * add ptracer as control variable
397    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
398      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
399    
400    checkpoint54f_post
401    o in verification/carbin/ remove experiment related to
402      ALLOW_PASSIVE_TRACER (array tr1 etc)
403      code_ad/ input_ad/ results_ad
404    
405    o add two new packages
406      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
407        + subject to optimization (memory)
408      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
409        + subject to reordering (many GOTOs in the original code)
410        + so far opps is called for every (i,j) point, and then operates in
411          the vertical; one may want to reorder the scheme in order operate in
412          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
413          fields)
414    o overhaul of IO so that we now have flags for MDSIO and/or MNC
415      - all verification tests compile and run with linux_ia32_g77
416      - defaults are compatible with current input files--nothing
417        should change if you were not previously using MNC
418      - MNC output has been added in numerous places (eg. timeave)
419        but there are still a few writes not yet do-able with MNC
420        (this is in progress)
421      - flags now allow for either/or/both use of MDSIO and MNC and
422        documentation will soon follow
423      - numerous small formatting cleanups for ProTeX
424    o add version info (via BUILD_INFO.h) to MNC and stdout
425    
426    checkpoint54e_post
427    o add two new packages
428      - pp81 (Packanowski and Philander, 1981), Richardson number and
429        stratification dependent mixing
430      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
431      - these scheme operate in a similar manner as KPP (without ghat, of
432        course), however there is only one diffusivity that is used for both
433        temperature and salinity (and passive tracers)ç
434    o add offline package
435    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
436      provided by Stephanie Dutkiewicz
437    o genmake2: add ability to search for C compilers and cleanup test output
438      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
439    
440    checkpoint54d_post
441    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
442    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
443      leading to additional shift by 5 days each year of integration
444       (i.e. leading to considerable offset over the years)
445    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
446    o start with no AB and no initial filtering (staggerTimeStep):
447      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
448    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
449      (external loading & cpl import/export stay in forward_step.F)
450    o update coupling interface to work with new staggerTimeStep
451    o change MDSIO ptracers_pickup.
452    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
453    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
454    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
455    
456    checkpoint54c_post
457    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
458      this affects (truncation error) output.txt of test-exp:
459       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
460    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
461    o change Qnet to always be the net heat flux, (+upward).
462      affects (truncation error) output of natl_box exp.: updated
463    o define the max number of passive tracers in PTRACERS_SIZE.h
464    o start to test mnc routinely in exp0
465    o add sea-ice loading (sIceLoad) as a new forcing field.
466    
467    checkpoint54b_post
468    o add testreport "-j JOBS" option for parallel builds (tested and pretty
469       impressive on Altix and Opteron systems)
470    o diagnostics can now write NetCDF files through the mnc package
471    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
472    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
473    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
474      affects (truncation error) output of lab_sea & natl_box exp.: updated
475    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
476    
477    checkpoint54a_post
478    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
479    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
480    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
481    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
482      + internal_wave (shift in writing cg2d_ini_res)
483    checkpoint54a_pre
484    
485    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
486      - modified verification/lab_sea and natl_box_adjoint accordingly
487    
488    checkpoint54
489    checkpoint53g_post
490    o prepare splitting of thermodynamics: store convect.counter in common block
491    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
492      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
493    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
494    o new parameter "nShapS": allow to treat differently S from T (nShapT)
495    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
496    o restore adjointability
497    
498    checkpoint53f_post
499    o modifications that affect AIM experiment results (update output.txt):
500      - no advection of S at top interface Nr (pkg/generic_advdiff)
501      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
502    o AIM pkg:
503      - include stability function into surf.Flux derivative relative to Tsurf
504      - calculate clear-sky radiation & surface temp. change (for diagnostics)
505    
506    checkpoint53e_post
507    o merged cylindrical coord configuration
508    o added rotating_tank experiment
509    checkpoint53e_pre
510    
511    checkpoint53d_post
512    o faulks upgraded: re-generate output.txt that have changed:
513       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
514    o Added Bryan and Lewis, 1979, vertical diffusivity profile
515    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
516    o added Sadourny discretization of Coriolis
517      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
518      - re-enabled use of omega3 (useAbsVorticity)
519    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
520      vector-invariant equations
521      - note: does *NOT* yet use same variable visc. for no-slip BC's.
522    o recoded the lateral boundary conditions for non-hydrostatic w, this time
523      hopefully without new bugs
524      - still to do: biharmonic friction for non-hydrostatic w
525    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
526    o regenerated output for global_ocean_ebm (using -ieee)
527    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
528      of mom_common/
529      - simple re-arrangement of instructions within computing loop
530    checkpoint53d_pre
531    
532    checkpoint53c_post
533    o new version of coupler for AIM+thSIce and Ocean models
534     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
535     - land: change Evaporation of snow
536     - aim with thSIce: fix bug in snow-precip.
537    o changes to calc_gw.F
538     - bug fix for w^2 term near the bottom boundary
539     - (hopefully) improve the lateral slip boundary condtions for use with
540        partial/looped cells
541      - because the bug fix changes two verification experiments anyway (exp5
542        and plume on slope), change the lateral boundary condition from half slip
543        to the value of no_slip_sides
544    o ebm package wasnt quite up to the parallel task. Fixed that.
545    o Adjoint of EBM package + verification
546      * TLM OK
547      * ADM not sufficient accuracy yet (needs further testing)
548    
549    checkpoint53b_post
550    o Commiting new energy balance model to repository
551      * package is pkg/ebm
552      * verif. is verification/global_ocean_ebm
553      * references are in ebm_driver.F
554    C      * X. Wang, P. Stone and J. Marotzke, 1999:
555    C        Global thermohaline circulation. Part I:
556    C        Sensitivity to atmospheric moisture transport.
557    C        J. Climate 12(1), 71-82
558    C      * X. Wang, P. Stone and J. Marotzke, 1999:
559    C        Global thermohaline circulation. Part II:
560    C        Sensitivity with interactive transport.
561    C        J. Climate 12(1), 83-91
562    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
563    C        Destabilization of the thermohaline circulation
564    C        by atmospheric eddy transports.
565    C        J. Climate 7(12), 1870-1882
566    o Will need long integration testing.
567    checkpoint53b_pre
568    
569    o created pkg/mom_common in preparation for variable viscosity code
570    o renamed and split ini_mnc_io
571    o pkg/land: only liquid water can diffuse or run-off
572    o AIM using land: soil wetness availability account for snow
573    o added printMapIncludesZeros to EEPARMS namelist
574    
575    checkpoint53a_post
576    o restore TAMC compatiility for exf_constants.h
577      (no usage of _d in .h)
578    o Additional storing in KPP in an attempt to fix
579      TAMC problem with adjoint of KPP code.
580      (no success...)
581      Identical code works fine with TAF.
582    o Fixed verification/natl_box_adjoint experiments.
583      Initial conditions for Experiments 4 and 5 are now
584      set to "SEAICE_initialHEFF=0", which is more reasonable,
585      and hence gives results closer to that of Experiment 2.
586      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
587    
588    checkpoint53
589    o stable checkpoint with up to date adjoint
590      TLM tests only run for 1st grdchk at the moment. Its unclear if
591      this is a code problem or a problem with resetting code for g_
592      variables that is being autogenerated wrong.
593      Otherwise:
594       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
595       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
596         are both still in chaos following their security messes.
597    
598    checkpoint52n_post
599    o various build (mostly genmake2) changes including:
600      - ability to build/run more easily within Cygwin and MacOS X
601      - more complicated Makefiles with a stronger dependence on Gnu Make
602    o pkg/seaice modifications
603      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
604        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
605        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
606      - changed proxy for geostrophic velocity and updated
607        verification/lab_sea/results/* accordingly
608      - removed ADI dynamic solver from pkg/seaice
609      - replaced all occurrences of 1/CSTICE or 1/CSUICE
610        they caused a segmentation fault under certain circumstances
611      - removed unused field WATR
612    o bug fix in exf-package:
613      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
614         now reflect that.
615    o small fixes in the cal-package:
616      - set reference date to first of January for the 'model'-calendar
617      - failing of cal_CheckDate in cal_FullDate now actually results in a
618        warning
619    o small modifications in exf-package to increase flexibility:
620      - change climtempfreeze from a constant to a runtime parameter that
621        is specified in data.exf_clim (default = -1.9)
622      - introduce runtime parameter windstressmax (default = 2.0) that is
623        specified in data.exf
624    o fix in pkg/thsice:
625      - update Evap (Tsf changes) to be consistent with Latent heat flux
626      - maintain snow precipitation unchanged (even if Tsf >=0).
627     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
628    
629    checkpoint52m_post
630    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
631      this does not change any of the results, because myIter=0 in swfrac always
632      lead to jwtype=2 (the default anyway), but the call makes little sense
633      as a default
634    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
635    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
636      atmospheric model (AIM) to use it ; add a "slab ocean" component.
637    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
638    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
639    o extending useSingleCpuIO option to work with new exch2 I/O format
640      - old-style, missing-tile I/O is still accessible by defining CPP
641        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
642    o monitor package can write to NetCDF files and/or STDOUT
643    o fix re-definition bug in MNC_GRID_INIT_ALL()
644    o doc/api_reference added
645      - a framework for building an API Reference Manual using all
646        the "protex" comments embedded in the code
647      - see pkg/generic_advdiff, pkg/mnc for examples
648    o MNC:
649      - make myThid the last argument for all subroutines
650      - new default for the grid files: NO halos
651      - add useMNC and other run-time flags
652      - separate per-file-group handling of the unlimited dimension
653      - early initialization of MNC w/ flags read at the eeboot stage
654        and lookup tables set in initialize_fixed
655      - write all MNC output to a freshly-created directory
656    o thermodynamics sea-ice (thsice) is now tested with testreport.
657    o test exp. advect_cs: use the standard cs32 grid ; update output.
658    o Added functionality to grdchk:
659      pick global i,j,k position (or nearest wet) where to perform check.
660    
661    checkpoint52l_post
662    o new land formulation:
663      a) use ground enthalpy as prognostic variable to ensure exact
664         energy conservation.
665      b) account for water temperature and for latent heat of freezing
666         in all processes (rain, run-off, ground storage)
667      c) compute surface and ground temperature implicitly.
668    o aim_v23 modification for new land model:
669      a) Treat separately land / ocean / sea-ice surface fluxes
670         to allow implicit computation of land & sea-ice surface temp.
671      b) add snow precipitation.
672    checkpoint52l_pre
673    
674    o fix problem (when 1 tile is empty) in min/max monitor.
675    o fix bug in timeAve (u,vZetatave in common block)
676    o no restoring terms under ice for pkg/seaice
677    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
678    o bug fix for pkg/seaice pickups
679    o change MNC call locations and add coordinate attributes
680    o mask vorticity at the corner ; affects global_ocean.cs output
681    o fix ini_curvilinear_grid ; test CS experiments with mpi
682    o aim.5l_cs: modify sea-ice fraction input file ; update output
683    o exf: Adding simple range check routine for exf fields after read
684    
685    checkpoint52k_post
686    o removed top-level directory "diags"
687      - we migrated these functions to pkg/timeave a long time ago
688    o fixed bug introduced in pkg/monitor
689    o accuracy ctrlprec = 32 insuffient for gradient checks using
690      averaged fields (I/O via cost_averages)
691      -> use ctrl.h in active_file*.F to control I/O precision.
692    o paramter list of CALL ADTHE_MAIN_LOOP
693    o added initial do_the_model_io to ecco
694    o set all ...Freq to zero after cost_final
695      taveFreq, dumpFreq, pChkptFreq
696    o MAIN and ECCO differentiability restored
697    
698    checkpoint52j_post
699    o fix nchklev in tamc.h for global_ocean...
700    o Bringing flow and store directives up-to-date
701    o Really weird thing!
702      call do_the_model_io from the_main_loop with parameters
703      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
704      TAF places a faulty re-call of initialise_varia
705      after cost_final call which should not be there!
706    checkpoint52j_pre
707    
708    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
709      error messages
710    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
711    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
712      debug output
713    o modfied mdsio_writefield.F to handle non-global files under exch2
714    o update AIM Cubed-Sphere exp (aim.5l_cs):
715      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
716    o update AIM Equatorial Channel exp:
717      use standard aim_v23 pkg and change the SST fields to be more realistic.
718    o globalFile now works with exch2
719    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
720      mon_vort3.F to make exch2 friendly with >1 tile per cube face
721    o limit timeave output for hi-res integrations
722    
723    checkpoint52i_post
724    o removed CPP_EEOPTIONS.h from verification/*/code
725    o updated the tiling for global_ocean_pressure
726    checkpoint52i_pre
727    
728    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
729      the old pkg/aim).
730    
731    checkpoint52h_pre
732    o shortened offending lines in exch2_send_rx?.template
733    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
734    o genmake2: add build & execute test for NetCDF code
735    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
736      old grid files, moved CPP_EEMACROS.h to pkg/exch2
737    o added useSingleCPUIO flag to monitor.F and mon_out.F
738    o added temporary hack for sea-ice dynamics on the cube:
739      metric terms are ignored and it is assumed that
740      there is no sea-ice on cube faces 1, 2, 4, and 5.
741    
742    checkpoint52f_post
743    o added exch2 cube routines to pkg/exch2
744    o modified hs94.cs-32x32x5 to use it
745    o added new grid files to hs94.cs-32x32x5
746    checkpoint52f_pre
747    
748    checkpoint52e_post
749    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
750      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
751    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
752      to work with implicit vertical advection and AB ;
753    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
754    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
755     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
756    checkpoint52e_pre
757    
758    o fix bug in impldiff when Nr=1 or Nr=2.
759    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
760    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
761    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
762      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
763    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
764    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
765    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
766    
767    checkpoint52d_post
768    o re-tiled many expts to allow comparison in multi-processor mode
769      - updated output accordingly
770      - changed hs94.128x64x5 to use intial T from file rather than use the
771        random number generator
772    o add infrastructure in model routines for fizhi and gridalt packages
773    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
774    o changes to permit hi-res, cubed-sphere, configuration
775      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
776      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
777      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
778        of surface winds for the cube
779      (A verification experiment, based on global_ocean.cs32x15, but with
780       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
781       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
782       complete with example surface forcing files and matlab scripts to look
783       at the output and compare it with that of global_ocean.cs32x15.)
784    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
785       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
786       to conform to the common rule.
787    o check-in the first version of the coupler + interfaces for multi-components
788       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
789       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
790       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
791       - ocean and atmos. share the same horizontal grid (no interpolation).
792       - exchanges between component and coupler is done in forward_step
793    o new verification experiment, cpl_aim+ocn:
794       coupled ocean - AIM atmosphere on cs32 grid.
795    
796    checkpoint52d_pre
797    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
798    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
799    
800    checkpoint52c_post
801    o Fixing OPTIONS files for use of exf:
802      - ALLOW_ECCO not needed
803      - ECCO_CPPOPTIONS.h should not be included from
804        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
805        as has been the case in the past
806      - All cal/exf related options are currently set in
807        single header file. Should remain so until we
808        agree on a consistent new policy.
809    o Removed all CPP options for cal package.
810      cal has no more CPP options.
811    o modified STOREs in GAD_ADVECTION
812    o corrected key comp. for passkey
813    
814    checkpoint52b_post
815    o new version: "thsice" of thermodynamic sea-ice pkg:
816     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
817     - modify fluxes but do not change theta directly;
818     - light cleaning of bulk_force pkg (still needed with thsice).
819     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
820       + output_thsice.txt to test thsice & bulk_force pkgs.
821    o put back grid & coriolis monitor output.
822    checkpoint52b_pre
823    
824    o call "do_the_model_io" at the beginning (=> dump initial state)
825    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
826    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
827      (need info on NUMBER_OF_PTRACERS)
828    o missing PTRACERS headers in some routines
829    o default tamc.h in pkg/autodiff supposed to crash
830      to ensure proper customization
831    
832    checkpoint52a_post
833    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
834      - moved surfaceTendencyTice from pkg/seaice to main code
835      - subroutine FREEZE_SURFACE now limits only surface temperature
836        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
837        => new output.txt for global_ocean.cs32x15 & global_with_exf
838      - keep the old version of FREEZE for backward compatibility;
839        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
840      - corresponding modifs for TAF directives
841    o added surface flux output variables to TIMEAVE_STATVARS
842    o time-averaged output for pkg/ptracers
843    o fix problem with ECCO-related divided adjoint
844      snapshot file was missing some ad-variables,
845      but no warning issued by TAF
846    
847    checkpoint52a_pre
848    o some bug fixes for #undef REAL4_IS_SLOW
849    
850    checkpoint52 = ecco_c52_e35
851    o after testing adjoints of checkpoint51u_post
852    
853    checkpoint51u_post
854    o this is the post-merge tag of the ecco-branch
855      (needs another clean checkout and re-testing)
856    o various natl_box_adjoint configs and results
857      but no input fields
858    o obcs adjoint not yet merged!
859    o adding ECCO global 1x1 and 2x2 degree configs
860    o updated/extended some store directives for seaice
861    o pkg/ecco now containes ecco-specific part of cost function
862    o top level routines the_main_loop, forward_step
863      supersede those in model/src/
864      previous input data.cost now in data.ecco
865      (new namelist ecco_cost_nml)
866    o in ctrl/ cleaned some cross-dependencies and updated CPP options
867    
868    checkpoint51t_post
869    o this is the pre-merge tag of the ecco-branch
870    
871    checkpoint51s_post
872    o cleanup: removed various obsolete #define-s
873    o pkg/grdchk
874      - renamed 'ph-grd 3' to 'grad-res'
875      - merged from ecco-branch
876        (remaining bug fixes for obcs gradient checks)
877      - additional high-precision output for testreport
878        (grep for 'precision_grdchk_result')
879    
880    checkpoint51r_post
881    o cleaned up or removed CPP_OPTIONS.h files
882    o updated results for some of the tests to reflect the new
883      optfiles (-ieee: -O0 instead of -O3)
884    
885    checkpoint51q_post
886    o cd_code:
887      - moved cd_scheme.F -> cd_code_scheme.F
888      - separate read_checkpoint from cd_code_ini_vars.F
889      - separated cd_code part from write_checkpoint
890      - updated AD_SOURCE, generated .flow
891      - added CD_CODE_VARS.h to the_main_loop
892      - Moving cd_code specific store dir.s to pkg/cd_code
893    o ctrl package totally restructured
894      - pack/unpack now optional and decoupled from
895        xx_/adxx_ I/O
896      - ctrl_pack/unpack cleaned
897        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
898      - confined inclusion of AD_CONFIG.h to where necessary.
899    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
900    
901    checkpoint51p_post
902    o create initial cd_code package
903      - WARNING: the initialization of fields within packages
904        is broken because INI_FIELDS (where READ_CHECKPOINT is
905        called) is called *before* PACKAGES_INIT_VARIABLES.
906        This seems to be backwards since
907        1) its important to initially zero the entire field including
908           the "halo" region
909        2) zeroing needs to be done *before* reading pickup info
910           and the pickup call might or might not happen in any
911           particular run
912      - this needs an overhaul for R2
913    o cleanup verification/*/code/GMREDI_OPTIONS.h
914    o cleanup testreport
915    
916    checkpoint51o_post
917    o bringing AD-related verif's up to date with genmake2
918      - carbon/
919      - global_ocean.90x40x15/
920      - hs.94.1x64x5/
921      - (front_relax/ )
922    o (more) consistent directory structure for AD-related verif.'s
923    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
924    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
925    o bug fix in find_alpha.F for MDJWF:
926      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
927        change rho -> rho-rhoConst
928      - replace call find_rho to find_rhonum
929    o initialisation of rFlx extended to full array (required by TAF)
930      and shifted to thermodynamics
931    o removed PTRACERS.h in ptracers routine
932    o added surfacetendencyPtr to S/R parameter list pracers_forcing
933    o Correcting initialisations for fVerU, fVerV.
934    o helping TAF to recognize dependency on kUp for
935      fVerU, fVerV
936    o Replacing delZ by delR in pkg/ctrl/
937    checkpoint51o_pre
938    
939    o undid all of cp51 pending some cleanups and discussion
940    o added the [#include "AD_CONFIG.h"] statement to all files that need
941       it for adjoint/tl #defines
942     o re-worked the build logic in genmake2 to support AD_CONFIG.h
943     o removed tools/genmake since it no longer works
944    
945    checkpoint51n_post
946    o modifications to make FREEZE flux visible to pkg/kpp
947      - moved surfaceTendencyTice from pkg/seaice to main code
948      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
949      - subroutine FREEZE now limits only surface temperature
950        (this means new output.txt for global_ocean.90x40x15,
951         global_ocean.cs32x15, and global_with_exf)
952    o added surface flux output variables to TIMEAVE_STATVARS
953    
954    checkpoint51n_pre
955    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
956    o added [#include "AD_CONFIG.h"] to all files that use the following
957      defines:
958      - ALLOW_ADJOINT_RUN
959      - ALLOW_TANGENTLINEAR_RUN
960      - ALLOW_ECCO_OPTIMIZATION
961    
962    checkpoint51m_post
963    o incorporating changes to get TAMC/TAF working in genmake2
964      - added new TAMC/TAF targets to the Makefile
965      - various cleanups related to package handling
966      - these changes should have no impact on the forward model
967    
968    checkpoint51l_post
969    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
970     - faster algorithm for cal_addtime.F
971     - higher precision arithmetic, where needed
972     - pkg/exf *startdate variables changed from calendar date to
973       model integration time
974    
975    checkpoint51l_pre
976    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
977    o enable to apply restoring on S & T only in a latitude band.
978    o update output (external_forcing_surf modif. change truncation errors)
979       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
980    
981    checkpoint51k_post
982    o change default to: useNHMTerms=.FALSE.
983     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
984       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
985     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
986        exp1, ideal_2D_oce
987     - change data file of oceanic exp (leave the results unchanged for now)
988       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
989    o set gravitySign automatically according to the vertical coordinate used
990      (and change sign: back to "logical" value: +1 when R increases downward)
991    o added an include barrier to the default CPP_OPTIONS.h and
992      removed the #include "PACKAGES_CONFIG.h" from it
993    o fix a bug in mom_fluxform (from chk51j_post)
994    
995    checkpoint51j_post
996    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
997    o adjusted some flow directives (dynamics, thermodynamics)
998    o added cubed-sphere case to test cost function
999    o heckpoint_lev?_directives.h now include
1000      pkg-specific directives, whenever those are enabled.
1001    o Moving pkg-specific flow directives to corresponding pkg
1002      Moving pkg-specific differentiation list to corresponding pkg
1003      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1004      ---> conventions are
1005           - pkg_ad.flow
1006           - pkg_ad_diff.list
1007           - pkg_ad_check_lev?_dir.h
1008    
1009    checkpoint51i_post
1010    o merge of the branch-genmake2
1011      - knowingly breaks the older genmake
1012      - automatic generation of all ALLOW_${PKG_NAME} defines
1013      - new testreport supersedes older testscript
1014    o large number of package inclusion and header cleanups
1015    checkpoint51i_pre
1016    
1017    o new output for adjoin of global ocean vector invariant
1018    o fix for checkpoint of thermodynamic seaice and bulk_force
1019    o Steph gchem various cleanups
1020    
1021    checkpoint 51h_pre
1022    o fixed some single quotes
1023    o modify gchem pkg to be more versatile
1024    o modifications to clean up dic pkg
1025    o add pkg/cfc
1026    
1027    checkpoint51g_post
1028    o provide links for ARPACK and ADM*TLM
1029    o start removing verification/vero/
1030    o update AD-related stuff
1031      (in particular some IF-statements in model/src/ routines)
1032    o adding to verification/global_ocean.90x40x15/ adjoint of
1033      vector invariant setup
1034    
1035    checkpoint51f_post
1036    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1037    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1038      of tracer Green's fucntions for ocean inversion project.
1039    
1040    checkpoint51f_pre
1041    o Added on-the-fly spatial interpolation capability
1042        "USE_EXF_INTERPOLATION" to pkg/exf.
1043      - This is a temporary Cartesian-grid hack until
1044        the super-duper ESMF coupler becomes available.
1045      - See verification/global_with_exf/README for usage example.
1046      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1047        flags and modified pkg/seaice accordingly.
1048    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1049        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1050        non-local transport term.
1051    
1052    checkpoint51e_post
1053    o pkg/mom_vecinv:
1054      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1055      - add time-ave diagnostic of vorticity advection.
1056    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1057    o atmospheric geopotential: - include water vapor effect;
1058                                - use p^kappa in p* scaling.
1059    o land pkg: read initial state from files.
1060    o AIM : add stratospheric drag in the upper level
1061    
1062    checkpoint51d_post
1063    o change function ILNBLNK (=> last non-blank char.) to return zero
1064      (instead of the string length) when the string. char is empty
1065    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1066    o modif's to restore TAMC compatibility
1067      - avoid "_d" constructs in PARAMETER declarations
1068      - avoid interrupting lines by comment lines
1069    o Use cluster local disks for purely local I/O
1070      vs. globally visible disks needed for ctrl stuff
1071      (merged from ecco-branch)
1072      - new active_file_loc... and mdsio_..._loc routines
1073      - affected packages: autodiff, ctrl, grdchk, mdsio
1074    
1075    checkpoint51c_post
1076    o introducing integer flag debugLevel
1077      - debLevZero: suppress all output
1078      - debLevA: standard
1079      - debLevB: equivalent to current debugMode=.TRUE.
1080    o introducing pathname variable mdsioLocalDir for mdsio
1081      that can be specified at runtime
1082      (relevant for cluster I/O to local disk)
1083    `
1084    >>>checkpoint51b_post
1085    adjoint of ptracers
1086    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1087    o extended state in checkpoint_lev?, etc.
1088    o alternative ctrl/cost with tr1 or ptracer
1089    o new comlev1_bibj_ptracers
1090    o new ptracers.flow
1091    o made ptracers_forcing same as external_forcing_s
1092    o added verification for adjoint with ptracers
1093      - adm. grdchk fail so far
1094      - tlm. grdchk OK
1095      - checked tapelev/comlev recomputations: OK
1096    <<<checkpoint51b_pre
1097    
1098    checkpoint51a_post
1099    o added code for biogeochemistry package
1100      - new pkgs: dic, gchem
1101      - new subroutine in ptracers
1102    o modify code for biogeo packages
1103      - in model/src and pkg/ptracers
1104    
1105    checkpoint51
1106    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1107      - autodiff, ctrl, exf, grdchk, seaice
1108      kept separate packages
1109      - cost, ecco, obcs
1110    o updating verification/internal_wave, verification/lab_sea
1111      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1112    
1113    checkpoint50i_post
1114    o Preparing next differentiable checkpoint and sync
1115      of MAIN vs. ecco-branch
1116      - 1st step: this one is differentiable
1117      - 2nd step: next(! not this) checkpoint will have updated packages
1118                  from ecco-branch)
1119    
1120    checkpoint50h_post
1121    o new package "land": provide surface BC for AIM.
1122    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1123    o AIM: use true log-P extrapolation for near surface temp (= as in
1124        F.Molteni paper) ; update aim.5l_cs output.
1125    o New variable in PARM03 for more flexible pickups
1126    o somewhat cleaned package initialisation sequence for
1127      ctrl/ cost/ ecco/ in packages_... routines
1128    
1129    checkpoint50g_post
1130    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1131      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1132      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1133        made the default because of faster convergence than ADI
1134    
1135    checkpoint50f_post
1136    o exf totally restructured
1137      - replaced all exf_set_ routines by one generic exf_set_gen.F
1138        and made sure it's still differentiable
1139      - split exf_getffields.F into new exf_bulkformulae.F
1140      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1141      - updated adjoint/makefile and relevant verif. accordingly
1142    
1143    checkpoint50f_pre
1144     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1145          + change Evap over land. (update aim.5l_cs output)
1146     o added missing .cvsignores and made uniform across expts
1147     o changed configuration of tidal_basin_2d expt
1148     o added pkg/debug functions for tracing code in fatal crashes
1149     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1150     o new fn in pkg/monitor to stop model if solution grows too big
1151     o removed lots of single quotes from comments
1152    
1153    checkpoint50e_post
1154    o make KPP work with PTRACERS
1155     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1156       nearly a copy of kpp_transport_s
1157     - there is no analogue to SurfaceTendencyS, so I have to use
1158       gPtr(of the surface layer) instead
1159    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1160    checkpoint50e_pre
1161    
1162    checkpoint50d_post
1163    o change kpp output from multiple-record state files to single-record state
1164      files analogous to write_state.F
1165    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1166      analogous to the cg2d-related output.
1167    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1168      so that writing to internal file fn (with length 512) fails.
1169    checkpoint50d_pre
1170    
1171    checkpoint50c_post
1172    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1173    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1174    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1175    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1176    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1177    
1178    checkpoint50c_pre
1179    Merging from release1_p13:
1180    o bug fix for pkg/seaice dynamic solver
1181    o Added SEAICE_initialHEFF to pkg/seaice
1182    
1183    checkpoint50b_post
1184    o store u*,v* in gU,V instead of in guNm1,gvNm1
1185    o in order to put the momForcing out of the Adams-Bashforth:
1186      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1187      to timestep.F
1188    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1189    o re-generate output for highly sensitive test-exp:
1190       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1191    
1192    checkpoint50b_pre
1193    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1194    o corrected CPP option mismatch in exf_Bulk... functions for case
1195      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1196    
1197    checkpoint50a_post
1198    o Bug fix for merging between c50 and KPP.
1199      ikey was passed from thermodynamics to kpp_calc via
1200      common block rather than being recomputed in kpp_calc,
1201      in contradiction with new key itdkey.
1202      New key ikppkey created, and tamc.h headers updated.
1203    
1204    checkpoint50
1205    - 2nd step of merge with ecco-branch:
1206      merge changes in ecco-branch back into main trunk
1207    - bug fix in find_alpha
1208    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1209    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1210    - merged some sliced AD support routines
1211    
1212    checkpoint49
1213    merged from ecco-branch:
1214    o exf:
1215      - Enable initialisation of forcing fields to constant
1216        (runtime) values.
1217      - in exf_getffields.F
1218        Reduce i-/j-loop to interior domain, discarding overlaps.
1219        That also fixes wrong TAF-key computations for key_1, key_2
1220        with bulf formulae.
1221      - exf_init.F modify #ifdef for exf_init_evap
1222      - exf_getffieldrec.F, ctrl_getrec.F
1223        The following INT-usages are not safe:
1224          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1225          fldcount = int(fldsecs/fldperiod) + 1
1226        and were modified.
1227    o autodiff: checkpoint_lev...
1228      - updated storing for bulk formulae (some arrays were missing)
1229      - added state for seaice package
1230      - synchronized with main branch
1231    o DIVA:
1232      Modif.s in
1233      - the_main_loop.F
1234      - the_model_main.F
1235      and added cost_final_restore.F cost_final_store.F
1236      o With these changes, it is possible to fully separate
1237        the first forward run to compute the cost function (mdthe_main_loop)
1238        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1239        into separate model executions.
1240        This enables better tuning of DIVA to given queue sizes.
1241      o Loss of cost function value in consecutive DIVA runs is
1242        fixed by storing to 'costfinal' file.
1243      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1244        beginning/end of adjoint integration is accounted for.
1245      The current changes apply to TAF-1.4.26.
1246      TAF has one remaining bug, requiring one manual change
1247      (see MITgcm manual).
1248    o cal: synchronized between MAIN and ecco-branch
1249    
1250    checkpoint48i_post
1251    o Changes to restore differentiability of code w.r.t. previous tag
1252      (mostly adding new routines to make list and replacing
1253      pressure by totPhiHyd).
1254    o Updated and merged grdchk package
1255      - has both ADM and TLM checks
1256      - works for single- and multi-proc.
1257      - output cleaned
1258      - worked successfully for parallel DIVA
1259    o genmake:
1260      - Adding -platform=SP4
1261      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1262    o Modif. for DIVA:
1263      ctrl_unpack should not be called in intermediate DIVA interval.
1264      (similar thing would apply for active files such as
1265      tbar, sbar, psbar, which should not be reinitialised;
1266      only relevant for ecco-branch)
1267    
1268    checkpoint48h_post
1269    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1270    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1271    o Added SEAICE_initialHEFF to pkg/seaice
1272    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1273    
1274    checkpoint48g_post
1275    --- EOS:
1276    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1277      store total Potential in totPhyHyd for diagnostics & EOS.
1278    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1279    --- Pressure/geopotential gradient:
1280    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1281    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1282      ( changes results of global_ocean_pressure )
1283    o NLFS + z-coord.: add eta*Rho' contribution.
1284    o accurate phiHyd when using interface-W at the middle between 2 centers
1285     ( changes results of ideal_2D_oce )
1286    o includes r* 2nd term in potential gradient.
1287    
1288    checkpoint48f_post
1289    Merging from release1_p12:
1290    o Modifications for using pkg/exf with pkg/seaice
1291      - improved description of the various forcing configurations
1292      - added basic radiation bulk formulae to pkg/exf
1293      - units/sign fix for evap computation in exf_getffields.F
1294      - updated verification/global_with_exf/results/output.txt
1295    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1296      (SBO) core products, including oceanic mass, center-of-mass,
1297      angular, and bottom pressure (see pkg/sbo/README.sbo).
1298    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1299      to avoid negative values in shallow regions.
1300      - updated verification/natl_box/results/output.txt
1301      - updated verification/lab_sea/results/output.txt
1302    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1303    o Added useSingleCpuIO option (see PARAMS.h).
1304    o Updated useSingleCpuIO option in mdsio_writefield.F to
1305      work with multi-field files, e.g., for single-file pickup.
1306    o pkg/seaice:
1307      - bug fix in growth.F: QNET for no shortwave case
1308      - added HeffFile for specifying initial sea-ice thickness
1309      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1310    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1311      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1312    o pkg/seaice:
1313      - adjoint-friendly modifications
1314      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1315    
1316    checkpoint48e_post
1317    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1318    o dynamics: change definition of computational domain & adapt mom_fluxform
1319      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1320    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1321        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1322        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1323        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1324        inverted_barometer solid-body.cs-32x32x1
1325      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1326    
1327    checkpoint48d_post
1328    o in preparation for r*:
1329     a) use pre-computed gradient of hydrostatic potential:
1330        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1331     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1332        => affects results of glob_oce_pressure (different truncation error)  
1333      update output.txt of ideal_2D_oce & global_ocean_pressure
1334    
1335    checkpoint48d_pre
1336    o in preparation for r*:
1337      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1338      pass the 2 comp. of the grad. as arguments to momentum S/R.
1339      but for the moment, only used if it does not change the results.
1340    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1341    
1342    checkpoint48c_post
1343    Modifications in treatment of initial flux forcing controls
1344    to avoid extra storing of flux fields.
1345    
1346    checkpoint48c_pre
1347    o Added tidal_basin_2d experiment (currently 1D!)
1348    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1349    
1350    checkpoint48b_post
1351    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1352     (modification to pressure gradient not yet implemented)
1353    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1354      (for U & V) that are used for vertical advection of momentum.
1355    
1356    checkpoint48a_post
1357    o In preparation for r*, use temp. array to compute vertical transport
1358       in flux-form momentum pkg. => change results of few test-exp.
1359      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1360                        lab_sea, natl_box & plume_on_slope
1361    
1362    checkpoint48
1363    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1364    
1365    checkpoint47j_post
1366    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1367    o moved adexch from forward_step to addummy_in_stepping
1368    o added exch in ctrl_map_...
1369    o aveFreq.=0. at end of cost_final to avoid overwrite in
1370      reverse checkpointing loop
1371    o Yet more changes in gmredi:
1372      * adgmredi_calc_tensor
1373        avoiding all recomputation of gmredi_slope_limit
1374      * adgmredi_x/y/rtransport
1375        added flag for excessive storing to avoid recomp. of
1376        u/v/rtans, dTdx/y/z
1377        -> this is not really necessary and very memory-consuming
1378      * adgmredi_slope_psi:
1379        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1380      * gmredi_slope_limit
1381        re-activated full calculation of taperfct for case 'ac02'
1382    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1383    
1384    checkpoint47i_post
1385    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1386    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1387      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1388    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1389    o gmredi: fix few bugs.
1390    
1391    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1392    This will be a good checkpoint to plug into the ecco-branch.
1393    o few modif.'s to get latest version adjointed
1394      (mainly kick out code in ini_linear_phisurf)
1395    o modif's to run adjoint with exactConserv
1396    o case GM_BOLUS_ADVEC should be cleaned
1397      S/R gmredi_slope_psi should be cleaned
1398    o verification/carbon now has exactConserv=.TRUE.
1399    
1400    checkpoint47g_post
1401    o time-average AIM output: becomes independent from statvars time-average
1402      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1403    o After TAF bug fix:
1404      Tested adjoint of gmredi package.
1405      Tests were done with checkpoint47 rather than with latest
1406      checkpoint47f_post since the latter is broken for the adjoint
1407      verification/carbon/ contains both ADM and TLM gradient checks.
1408    Here they are, before they get changed/lost/stolen.
1409    Mostly modif.'s to fix numerical sensitivities.
1410    Gradient checks OK for
1411    - GM_taper_scheme:
1412      * clipping
1413      * ac02
1414      * linear
1415      * glw91
1416      * dm95
1417      * ldd97
1418    - GMREDI_OPTIONS:
1419      * GM_VISBECK_VARIABLE_K
1420      * GM_NON_UNITY_DIAGONAL
1421      * GM_EXTRA_DIAGONAL
1422      * GM_BOLUS_ADVEC
1423    in conjunction with data.gmredi parameters to be checked in
1424    in a few minutes under verification/carbon/code/
1425    
1426    checkpoint47f_post
1427    Merging from release1_p10:
1428    o modifications for using pkg/exf with pkg/seaice
1429      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1430        and SEAICE_EXTERNAL_FLUXES
1431      - pkg/exf CPP options EXF_READ_EVAP and
1432        EXF_NO_BULK_COMPUTATIONS
1433      - usage examples are Experiments 8 and 9 in
1434        verification/lab_sea/README
1435      - verification/lab_sea default experiment now uses
1436        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1437    
1438    checkpoint47e_post
1439    o created a tag prior to creating a branch
1440    
1441    checkpoint47d_post
1442    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1443      at the bottom boundary had an erroneous half slip boundary condition
1444    o added bottom drag and no slip boundary condition capabilities to
1445      oceanic pressure coordinates code
1446    o added new verification experiment global_ocean_pressure, this experiment is
1447      also described in the tutorial section of the manual
1448    checkpoint47d_pre
1449    
1450    checkpoint47c_post
1451    o Added a verification experiment for a global cubed-sphere ocean run
1452      -  verification/global_ocean.cubed32x32x30
1453      -  uses pkg/therm_seaice and pkg/bulk_forcing
1454    
1455    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1456    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1457      when using P-coordinate; only implemented for atmospheric config.
1458    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1459      NOTES: requires option NONLIN_FRSURF to be "#define".
1460    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1461    
1462    checkpoint47b_post
1463    Merging from release1_p9:
1464    o pkg/seaice
1465      - removed GOTO's and added taf directives
1466      - double precision constants to reduce the g77 (Linux)
1467        to F77 (SGI) differences reported in release1_p8
1468    o tools/genmake
1469      - added SGI options
1470    o verification/testscript
1471      - updated to that of checkpoint47a_post
1472    o verification/global_ocean.90x40x15/input/eedata
1473      - modified for SGI f77 compatibility
1474    o verification/lab_sea
1475      - added description of sea-ice model
1476      - added missing matlab routines
1477      - added test of thermodynamics parallelization
1478    
1479    checkpoint47a_post
1480    o new pkg: aim_v23
1481     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1482       for now, keep the same surface forcing as before.
1483     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1484     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1485     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1486    o add diagnostic of surface correction term in monitor output
1487    
1488    o bulk_force and therm_seaice
1489    - Two packages:  bulk_force (Bulk forcing)
1490      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1491    - Earlier integration from Stephaine Dutkiewicz
1492      and Patrick Heimbach.
1493    - Two ifdef statements for compile time,
1494       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1495    
1496    checkpoint47
1497    differentiable version of checkpoint46n_post
1498    o bug fix in quasihydrostaticterms
1499    o * "clean" adjoint code (in terms of extensive recomputations)
1500        can now be obtained for all GMREDI options (i.e. for
1501        - GM_VISBECK_VARIABLE_K
1502        - GM_NON_UNITY_DIAGONAL
1503        - GM_EXTRA_DIAGONAL
1504        - GM_BOLUS_ADVEC )
1505      * However, wrong gradient check problem remains unsolved.
1506      * New CPP options have been introduced for different
1507        tapering schemes
1508    o external_fields_load now part of differentiation list
1509    o pressure needs multiple storing;
1510      would be nice to have store_pressure at beginning or
1511      end of forward_step, e.g. by having phiHyd global (5-dim.)
1512      (NB: pressure is needed for certain cases in find_rho,
1513      which is also invoked through convective_adjustment).
1514    o recomputations in find_rho for cases
1515     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1516    o #define ATMOSPHERIC_LOADING should be differentiable
1517    o ini_forcing shifted to begining of initialise_varia
1518    o Incorporating QNVS line search routines into MITgcm
1519      (this is separate code, and therefore not under pkg)
1520      lsopt/, optim/
1521    o Updated verification/carbon/
1522      - #define GM_VISBECK_VARIABLE_K
1523      - GM_taper_scheme    = 'ldd97'    
1524    
1525    checkpoint46n_post
1526    Merging from release1_p8:
1527    o verification/natl_box:
1528      updating new external_fields_load routine
1529    o New package: pkg/seaice
1530      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1531      The sea-ice code is based on Hibler (1979-1980).
1532      Two sea-ice dynamic solvers, ADI and LSR, are included.
1533      In addition to computing prognostic sea-ice variables and diagnosing
1534      the forcing/external data fields that drive the ocean model,
1535      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1536      The implied surface heat flux is then stored in variable
1537      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1538      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1539      non-local transport term.  Because this call precedes model
1540      thermodynamics, temperature under sea-ice may not be "exactly" at
1541      the freezing point by the time theta is dumped or time-averaged.
1542      N.B.: fairly large differences in accuracy occur across
1543            different platforms/compilers; comparison between
1544            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1545            generated output gives:
1546       T           S           U           V
1547      C D M    c        m  s        m  s        m  s        m  s
1548      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1549      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1550      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1551    
1552      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1553    o GAD:
1554      - generated new common blocks to account for call of
1555        same gad routines with differing traceridentities
1556        (needed to modify tracerIdentity indices in GAD.h)
1557      - generated separate common blocks for case useCubedSphereExchange
1558        (Department of Futurology)
1559      - parameter lists to gmredi_?transport: added tracerIdentity
1560      - added new key indices to tamc.h
1561    o external_fields_load:
1562      - added this routine to TAF list
1563      - needed to make some common blocks global and additional storing
1564        along the same lines as exf package (checkpoint_lev?_directives.h)
1565    o exf:
1566      updated external forcing package
1567      - bug fixes carried over from ecco-branch
1568        (missing OBCS_OPTIONS.h in two routines)
1569      - enable easy to use "no forcing".
1570      - added exf I/O for atmospheric loading
1571      - added exf I/O for runoff data
1572      - transfered scaling between exf <-> MITgcm to exf namelist
1573    o Adding new verification experiment global_with_exf.
1574      This verification experiment is almost identical to the
1575      global_ocean.90x40x15 experiment, except that it uses
1576      the exf (and cal) package instead of the
1577      external_fields_load routine (cf README file).
1578    
1579    checkpoint46m_post
1580    o modified testscript to return -- when there are no lines of "%MON" output
1581    o added new flag "quasiHydrostatic" for QH mode
1582      and new routine quasihydrostaticterms()
1583    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1584      New routine: mom_u_coriolis_nh()
1585    o fixed sign of non-hydrostatic metric terms in u and v equations.
1586      Depend on correct sign of gravitySign.
1587    o added work.pc* to .cvsignore in aim directories using ifc
1588    o introduced flag for controllin non-hydrostatic metric terms
1589    o removed gravitySign from PARM04
1590    o switched to g77/ifc from pgf77 in aim experiments
1591    
1592    checkpoint46l_post
1593    o made convective adjustment work with pressure coordinates:
1594     - changed the direction of k-loop in convective_adjustment.F for the
1595       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1596     - adjusted the reference pressure k-index in convective_adjustment.F
1597     - adjusted the convection condition in convect.F (in analogy to
1598       calc_ivdc.F)
1599     - convective_adjustment no longer computes anything on the halos
1600     - removed the warnings about negative salinity from find_rho.F and
1601       find_alpha.F; instead the new routine look_for_neg_salinity, called
1602       at the beginning of find_rho, find_alpha, and find_beta, does a
1603       check of the entire slice, if CPP-option
1604       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1605    checkpoint46l_pre
1606    
1607    checkpoint46k_post
1608    o fixed the verification/global_ocean.90x40x15 experiment:
1609     - new bathymetry (the world according to A., JMC, and M.)
1610     - new initial fields and forcing fields (*.bin files)
1611     - new POLY3.COEFFS (for the next release one should switch to a full
1612       equation of state: JMD95P or MDJWF)
1613     - fixed several errors and redundancies in the data file
1614     - experiment uses looped cells
1615     - added matlab directory with diagnostic scripts for plotting of output
1616    
1617    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1618     - read AIM physics parameters from a file (data.aimphys)
1619     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1620    
1621    checkpoint46j_post
1622    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1623    o move wVel computation at the end of the time step, in S/R integr_continuity
1624    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1625    o update timeave pkg for wVel diagnostic.
1626    checkpoint46j_pre
1627    
1628    checkpoint46i_post
1629    o Clean up AIM package (and keep the results unchanged):
1630      include CPP_OPTION and use IMPLICT NONE in all routines ;
1631      declare all the variables _RL ; use _d 0 for all numerical constants.
1632      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1633    
1634    checkpoint46h_post
1635    o cleaned up the use of rhoNil and rhoConst.
1636      - rhoNil should only appear in the LINEAR equation of state, everywhere
1637        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1638        and the dynamical equations are all divided by rhoConst
1639    o introduced new parameter rhoConstFresh, a reference density of fresh
1640      water, to remove the fresh water flux's dependence on rhoNil. The default
1641      value is 999.8 kg/m^3
1642    o cleanup up external_forcing.F and external_forcing_surf.F
1643      - can now be used by both OCEANIC and OCEANICP
1644    checkpoint46h_pre
1645    
1646     Added code to convert surface volume flux (fresh water) into
1647     a mass flux when using P coordinates in the ocean (OCEANICP).
1648     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1649    
1650    checkpoint46g_post
1651    o Include a new diagnostic variable phiHydLow for the ocean model
1652      - in z-coordinates, it is the bottom pressure anomaly
1653      - in p-coordinates, it is the sea surface elevation
1654      - in both cases, these variable have global drift, reflecting the mass
1655        drift in z-coordinates and the volume drift in p-coordinates
1656      - included time averaging for phiHydLow, be aware of the drift!
1657    o depth-dependent computation of Bo_surf for pressure coordinates
1658      in the ocean (buoyancyRelation='OCEANICP')
1659      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1660        Theta, Salinity, and Pressure in the parameter list. This routine is
1661        presently contained in find_rho.F. This routine does not give the
1662        correct density for 'POLY3', which would be a z-dependent reference
1663        density.
1664    o cleaned up find_rho
1665      - removed obsolete 'eqn' from the parameter list.
1666    o added two new verification experiments: gop and goz
1667      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1668    checkpoint46g_pre
1669    
1670    checkpoint46f_post
1671    o Enable tangent linear (forward mode) gradient checks:
1672      - extended active file handling to g_... files
1673      - added TANGENT_SIMULATION to theSimulationMode
1674      - extended grdchk package accordingly
1675    o added tangent linear setup in verification/carbon/code_ftl
1676    o added adjoint setup in verification/front_relax/code_ad
1677    
1678    checkpoint46e_post
1679    o Added new equation of state -> MDJWF
1680      - EOS of McDougall et al., 2002, JAOT, submitted
1681      - caveat: the equation of state is only valid for a smaller (more
1682        realistic?) range of values than JMD95P/Z and UNESCO
1683      - added masks to the calculation of pressure in store_pressure
1684      - added more check values for density in check_eos (ini_eos.F), some of
1685        the old check values are out of the range of the MDJWF-eos, so don't
1686        expect perfect matches for those
1687    checkpoint46e_pre
1688    
1689    checkpoint46d_post
1690    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1691      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1692      case of pressure coordinates. eosType='JMD95Z' in
1693      combination with buoyancyRelation='OCEANICP' now causes an error.
1694    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1695      in find_alpha/beta.
1696    checkpoint46d_pre
1697    
1698    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1699      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1700    
1701    checkpoint46c_post
1702    o Changes necessary for ocean in p-coordinates
1703     -  Added new buoyancy relation = 'OCEANICP'
1704     -  Added new parameters = gravitySign (this used to be contained inside
1705        the factor dRdZ which I added when we first switched to R coordinates).
1706     X GM/Redi is not compatible (yet)
1707     X bottom drag and no-slip need to be debugged.
1708    checkpoint46c_pre
1709    
1710    checkpoint46b_post
1711    o Added new equation of state -> JMD95Z and JMD95P
1712      - EOS of Jackett and McDougall, 1995, JAOT
1713      - moved all EOS parameters into EOS.h
1714      - new routines ini_eos.F, store_pressure.F
1715    o Added UNESCO EOS, but not recommended because it requires
1716      in-situ temperature (see JMD95)
1717    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1718      unesco.f to be used with POLY3
1719    checkpoint46b_pre
1720    
1721    checkpoint46a_post
1722    o Added (atmospheric) pressure loading
1723      - new field in FFIELDS.h, etc...
1724      - new cpp flag ATMOSPHERIC_LOADING
1725    o Changed hFacC to _hFacC in calc_phi_hyd.F
1726    o Added SHORTWAVE_HEATING to some files for consistency
1727    checkpoint46a_pre
1728    
1729    checkpoint46
1730    further merges from release1_p5
1731    o new ctrl package
1732      - adopted from ECCO environment to enable optimization
1733      - added Eliassen Palm fluxes to controls
1734    o added Eliassen Palm flux controls to gradient check package
1735    o cost package
1736      - Compatible with new ctrl package
1737      - added Eliassen Palm cost hooks
1738      - modif's of existing cost functions
1739    o Adjoint-related bug fixes in kpp:
1740      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1741      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1742    o autodiff package
1743      - flow directives:
1744        + new for S/R do_the_model_io
1745        + enhanced for S/R checkpoint
1746        + new gmredi.flow
1747      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1748        disable adcommon.h/g_common.h by default.
1749      - fixed problem for adjoint of global_max
1750    o modified verification/carbon/
1751    o New setup for adjoint of global_ocean
1752    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1753    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1754    o incorporated hooks for sponge layer code (external_forcing.F)
1755    
1756    checkpoint45d_post
1757    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1758    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1759      (affects plume_on_slope "cg2d" output)
1760    o add new parameter deltaTfreesurf for free-surface time stepping
1761    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1762    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1763    o change phiMin in exp1 (to agree with documentation)
1764    o add new flags:
1765     - T,S forcing inside/outside Adams-Bashforth
1766     - turn off temp,salt advection and/or forcing
1767     - for each tracer, define internal flag for multiDimAdvection & A-B
1768    o monitor: change definition of KE to check conservation of Energy
1769    
1770    checkpoint45c_post
1771    o Removed f90 comments ("!")
1772    o Modified initialisations to enable exf package for MITgcm
1773      (without invoking ECCO_PACKAGE).
1774    o modifications to gradient check package (Martin Losch)
1775      - enable centered differences
1776      - modified format of standard output
1777    
1778    checkpoint45b_post
1779    o cleaned exchange calls in cg2d
1780    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1781    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1782      to configure barotropic setup (Martin Losch)
1783    o moved some initialisations within bi,bj loop in dynamics
1784      (TAF flow dependency)
1785    o in initialise_varia, moved call packages_init_variables
1786      before convective_adjustment_init
1787      (corresponding adjustment of TAF tape initialisation).
1788    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1789    
1790    checkpoint45a_post
1791    o compute Rho over the whole domain (extend iMin,jMin indices)
1792    o specific exchange for X-slice domain (case Ny=1)
1793    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1794    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1795    
1796    checkpoint44h_post = checkpoint45
1797    o Fix to restore differentiability:
1798      place at which packages_init_variables is called in
1799      initialise_varia is crucial for reverse control flow.
1800    o modifications in GMRedi to enable stable adjoint
1801      (corresponding modif's in thermodynamics, dynamics)
1802    o added missing hook for sponge layer code in external_forcing
1803    o modified test cost functions
1804    o storing in gad_advection (plus removal of write(0,*)!
1805    o missing headers TR1.h added in convective_adjustment routines
1806    o errorMessageUnit set non-equal zero in eeboot
1807      (conflict on some platforms, e.g. IBM SP3)
1808    o modified carbon verif.
1809    
1810    checkpoint44h_pre
1811    o vertical grid option: allow to put the Interface at the middle between
1812      2 cell-centers ; replace delZ in pkg/kpp by drF.
1813    o GM Advective form: Tracers are advected using the residual transport (=
1814      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1815    
1816    checkpoint44g_post
1817    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1818      results) ; ifdef missing in thermodynamics.F
1819    
1820    checkpoint44f_pre,checkpoint44f_post
1821    o added PTRACERS package
1822      This allows an arbitrary number of passive tracers to be integrated
1823      forward simultaneously with the dynamicaly model.
1824      + Implemented so far:
1825        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1826        - I/O and checkpointing
1827        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1828      + Not implemented so far:
1829        - KPP
1830        - OBCS
1831      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1832        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1833        line in data.pkg.
1834      + This package is disabled by default since it increases storage.
1835    
1836    
1837    o testscript: added -cleanup option
1838    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1839                 b) enable to filter 2D fields.
1840    
1841    checkpoint44e_pre,post
1842    o re-wrote convective adjustment to use pre-calculated weights
1843      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1844      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1845      Original calls to convect() still in place.
1846    
1847    chkpt44d_pre,post
1848    o added missing EXCLUDE_MONITOR flags
1849    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1850      (incompatible typ in MIN/MAX expressions caused problems
1851      on IBM SP3)
1852    o in genmake added variable MAKEDEPEND
1853      plus resetting for case SunOS
1854    o added timer_stats.c routine for IBM SP3
1855    o removed variables in dynamics
1856    !!! I forgot to create tag chkpt44d_pre !!!
1857    !!! But chkpt44d_pre = chkpt44c_post    !!!
1858    
1859    o real fresh water flux implemented with non-linear free-surface.
1860    
1861    chkpt44c_pre,post
1862    o few fix (mask in shap_s2, EmPmR in external_field_load,
1863      USE_NATURAL_BCS in solve_for_P);
1864    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1865    
1866    checkpoint44b_pre/_post
1867    o merge of relevant stuff from the ecco-branch:
1868      - genmake: removed $S64 overwrite for case SunOS
1869      - pkg/exf: update and corrections for field swapping and obcs
1870      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1871                  harmonized between ECCO and MITgcm
1872      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1873                      updated checkpointing_lev... lists for obcs
1874      - model/src: minor changes in forward_step, plot_field
1875                   added directive for divided adjoint in the_main_loop
1876      - pkg/mdsio: added mdsio_gl_slice
1877    
1878    o check parameters & config (chkpt44a_pre,post)
1879    o OBC and NonLin_FrSurf.
1880    
1881    checkpoint44
1882    o fix bug in mom_vi_del2uv
1883    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1884    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1885    o update AIM experiments (NCEP input files)
1886    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1887    o added some stuff for AD
1888    
1889    checkpoint43
1890    o added two new advection tests
1891    o added global 4x4 degree ocean test
1892    o added test of H&S94 with free surface on cube
1893    o some final mods for gradient check, adjoint,...
1894    
1895    checkpoint42
1896      Fixed AD-related problems:
1897    o Store directives up-to-date with re-arranged Adams-Bashforth
1898      (mainly thermodynamics.F)
1899    o New store directives for multi-dim. advection schemes
1900      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1901      * new common block and key passkey
1902      (mainly gad_advection.F)
1903    o Modified store directives for split of dynamics/thermodynamics
1904      for the case ALLOW_KPP
1905    o Cleaned argument list for timestep_tracer.F
1906    
1907    checkpoint41
1908    o re-formatted/added comments in prologues of key subroutines
1909      to work with protex
1910    
1911    checkpoint40
1912    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1913    o added FLT (floats) package from Arne along with demo. experiment
1914    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1915      implementation of forward-in-time forcing terms
1916    o more mods for non-linear free-surface including new variable
1917    o modified multi-dim method to work on cube
1918    o bug fix in KPP (from DM)
1919    
1920    checkpoint40pre9
1921    o added DST advection schemes
1922    o fix MPI bug on SGI's
1923    o modifications for non-linear free-surface
1924    o fixed conditionals for fixed flow/passive tracer only mode
1925    o added tension/strain form of stress tensor
1926    o changes to commenting of arguments for TAF/TAMC
1927    o added/updated many matlab scripts
1928    o added multi-dimensional advection method for tracers
1929      
1930    checkpoint40pre8
1931    o new package rw/
1932      Added method for dumping intermediate local arrays:
1933      mdsio_writetile - same as mdsio_writefield except works from inside
1934                        bi,bj loop
1935      mdsio_writelocal - same as mdsio_writetile except works for local
1936                         arrays
1937      write_local_r? - higher-level wrapper for mdsio_writelocal
1938      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1939      Example given at end of mom_vecinv.F that dumps some local arrays.
1940    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1941      control flux-form versus vector invariant code.
1942      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1943      or genmake -DISABLE ...
1944    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1945      (additional storing is now needed for case vecinv;
1946      currently nothing implemented to switch this storing off
1947      in case fluxform is used since no CPP flag available).
1948    
1949    checkpoint40pre7
1950    o bug fix in dynamics.F
1951      calc_viscosity called before k=1,Nr loop.
1952    o added some #ifdef's ALLOW_PASSIVE_TRACER
1953    o cleaned initialisations in ctrl_map_ini
1954      related to TAF
1955    
1956    checkpoint40pre6
1957    o split dynamics into thermodynamics & dynamics
1958    o corresponding split of calc_diffusivity into
1959      calc_diffusivity, calc_viscosity
1960      (kpp_calc_diff, kpp_calc_visc).
1961    o Added diffkr, kapgm to control variables
1962    o bug fix in gmredi_slope_limit for ldd97
1963    
1964    checkpoint40pre5
1965    o proper initialization of Adams-Bashforth time stepping
1966      + uses forward step for very first step of model (iter=0)
1967    o re-generated *all* output since almost all output is modified by this
1968      change (sorry but we've been putting this one off for about 2 years)
1969      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1970        *not* regenerated since they are already out of date and I don't
1971        want to create the impression that they are suddenly working.
1972    o removed KAP stuff for DEC's
1973    o modified/added many .cvsignore files in */code and */input
1974    o added new expt "solid-body.cs-32x32x1"
1975      + this uses an alternative form of ini_curvilinear_grid.F which
1976        is not necessarily any better than the current one...
1977    
1978    checkpoint40pre4
1979    o added re-initialisations of utrans,vtrans,rtrans in
1980      calc_common_factors which are crucial for TAF.
1981    o extended iMin,jMin range for calc_common_factors,
1982      calc_diffusivity
1983    o added option ALLOW_PASSIVE_TRACER
1984    o a few minor updates and fixes
1985    
1986    checkpoint40pre3
1987    o created calc_gtr1.F for gad package
1988    o split the_main_loop and re-introduced forward_step
1989    o some recomputations of nIter0 for TAMC
1990    
1991    checkpoint40pre2
1992    o Updated to latest branch of AJA, JMC
1993    o Added gradient check package
1994    o Added routines for passive tracer handling
1995    o Added carbon sequestration sensitivity experiment
1996    
1997    checkpoint39
1998     o Modifications and fixes to support TAMC
1999       (mainly missing or wrong directives)
2000     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2001       in addummy_in_stepping
2002     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2003     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2004     o Included following packages:
2005       cal: calendar
2006       exf: external forcing
2007       ecco: essential routines to control use of cal, exf
2008             (NB: this is not the full ECCO environment)
2009     o disabled some packages by default in genmake
2010    
2011    checkpoint38
2012     o see notes_c37_adj.txt
2013     o corrected wrong layer index in external_forcing_t
2014     o replaced the_main_loop/forward_step by the_main_loop
2015     o removed forceoutput from write_state
2016       (replaced criteria for initial/final state)
2017     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2018    
2019    checkpoint37
2020     o mdsio.F routine split and packaged in pkg/mdsio
2021       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2022        used unless genmake -disable=mdsio)
2023     o allow a more precise surface-geopotential gradient for the atmosphere
2024       taking into account the change in space of Alpha (=1/rho) at the surface.
2025     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2026       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2027     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2028       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2029       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2030     o Time-Average diagnostics defined as a pseudo package "timeave".
2031     o pickup files : old pickup (before c35) did not work with new code (c35
2032       and after) unless activating 2 commented lines in initialise-varia.
2033     o Non-Hydrostatic pickup file Pb fixed.
2034     o bug with Rigid-lid version (since c35) fixed.  
2035    
2036    checkpoint36
2037     o implement Crank-Nickelson barotropic time-stepping
2038     o recover Time-Average diagnostics
2039     o fix Pb in checkpoint (PR#19)
2040     o AIM become a standard package ; clean unused CPP_kees
2041    
2042    checkpoint35
2043     o subtantial rewrite of dynamics.f
2044     o allows staggered time-stepping
2045     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2046     o added bottom drag (linear + quadratic)
2047    
2048    checkpoint34
2049     o Modified exchange routines for correct reverse simulation.
2050     o Added verification output to comply with bug fix in impldiff.F
2051       as of c33 (exp2, natl_box).
2052     o Corrected store directives in dynamics.F
2053     o Corrected array boundaries in impldiff.F
2054     o Corrected array dimensions in gmredi.
2055       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2056     o Added routine GLOBAL_SUM_INT to global_sum.F
2057     o Added mdsio_gl.F for ECCO purposes.
2058    
2059    checkpoint33
2060     o Fixed bug in lower BC in impldiff.F
2061     o Fixed confusion about units of forcing arrays in FFIELDS.h
2062       namely Fu,Fv,Qnet,Qsw,EmPmR:
2063       - Removed verification/natl_box/code/external_fields_scale.F
2064         (did not differ from that in model/src)
2065       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2066         (see FFIELDS.h for description)
2067       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2068         kpp_calc.F and kpp_transport_t.F
2069       - Removed model/src/external_fields_scale.F and calls to it
2070       - verification/natl_box uses flux data with "atmospheric" sign so
2071         a special version of external_fields_load.F is used to
2072         change the data as it's read in. This way, the arrays
2073         have the right units and signs at all times tha a user could
2074         possibly use them.
2075     o Corrected genmake to delete a temporary file during configuration
2076    
2077    checkpoint32
2078     o Scaling of forcing fields moved from external_forcing.F to
2079       external_fields_scale.F, called directly after loading fields.
2080     o Surface relaxation terms added to surface tendency fields in
2081       extra subroutine.
2082     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2083       fields.
2084     o Changes in GMRedi to comply with packaging structure.
2085     o Modifications and bug fixes in KPP package.
2086     o Verification experiment for KPP added (verification/nat_box/)
2087    
2088    checkpoint31
2089     o Packages interface brought in line with defined standard
2090       -> new routines packages_...F
2091       -> changes in initialise_fixed.F, initialise_varia.F
2092       -> enables initialisation interface for ECCO package
2093     o Rescaling of external forcing fields immediately after read
2094       (removed from external_forcing.F)
2095       -> new: surface_fields_scale.F
2096       -> affects ini_foorcing.F, external_fields_load.F
2097     o Computation of surface tendencies before tendency updates.
2098       -> new: external_forcing_surf.F
2099     o Change of variable names useGMRedi, useKPP, useECCO
2100     o Further changes in dynamics.F, impldiff.F for TAMC
2101     o Tested for experiments 0, 2, 4.
2102       - not yet tested for GMRedi.
2103       - not yet tested for KPP.
2104    
2105    checkpoint30
2106     o Updates for OBCs
2107     o New experiment for test OBCs (internal_wave)
2108     o New output.txt in verification/exp4/results/
2109     o Updates for KPP: calculation of viscosity corrected, new variables
2110       kpp_dumpFreq and kpp_taveFreq
2111     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2112       and entry for T90 in genmake
2113    
2114    checkpoint29
2115     o packaged KPP and GM/Redi
2116    
2117    checkpoint28
2118     o Corrected initialization of hFacMin for difference vertical coordinates
2119     o Modified calculation of partial cell thickness to more robust algorithm
2120     o config_summary.F: replaced write_1D_... by write_0D_...
2121       read_write.F: added subroutines write_0D_...
2122     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2123       included some initialisations required for TAMC.
2124     o routine calc_isoslopes: modified sqrt computation to make it
2125       differentiable for zero argument.
2126     o routines dynamics, impldiff:
2127       included store directives and tape key computations required for TAMC.
2128     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2129    
2130  checkpoint27  checkpoint27
2131   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
2132     formulation works properly with variable resolution.     formulation works properly with variable resolution.

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