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revision 1.38 by heimbach, Tue Apr 10 22:35:24 2001 UTC revision 1.760 by jmc, Sun Dec 24 22:30:57 2006 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/diagnostics: change vertical interpolation to be safer, and more
8       flexible (define p-levels to interpolate to in data.diagnostics);
9      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
10       diagnostic pointer.
11    o pkg/seaice: more cleaning up of seaice_growth, added many comments
12    o pkg/exf: put runoff0 and runoff into the appropriate common block
13    o fix multi-category seaice:
14     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
15       SEAICE_MULTICATEGORY
16     - fix short wave heat flux
17    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
18       and allow to use EVP solver. Change forward lab_sea: test both EVP
19       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
20    o Initial check-in of lab_sea adjoint
21      (very similar to natl_box_adjoint/code_seaice)
22      * used C-grid and EVP solver
23      * used KPP, GM/Redi
24      * uses inAdExact=.TRUE.
25      * gradient checks fail for both ADM and TLM
26        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
27        f.d. gradients actually seem more problematic than ADM, TLM gradients;
28        issue is related to forward mismatch between g77 an ifort
29    o pkg/seaice: overhaul of thermodynamics
30     - growth.F and groatb.F are replaced by new routine seaice_growth.F
31     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
32     - move a few global fields out of SEAICE.h into seaice_growth.F and
33       make them 2D (FICE/QNETO/ ...)
34     - remove FO (it is the same as QNETO)
35     - introduce a few local fields to avoid modifying external fields such
36       as atemp, etc.
37    
38    checkpoint58s_post
39    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
40      changed exf_set_gen.F so that
41        genperiod=0 means input file is one time-constant field and
42        genperiod=-12 means input file contains 12 monthly means
43    o CG2D: use pre-computed solver main-diagonal (stored in common block);
44      this affects truncation error ; generate new output file for exp. which
45      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
46        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
47        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
48        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
49        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
50        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
51    o start implementation of deep-atmosphere and anelastic formulation
52    o verification: remove 2nd copy of input files and use script "prepare_run"
53      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
54    o mom_common/vecinv/fluxform: fix a few initialisation isssues
55    o profiles: fix for multithreaded case
56    
57    o diagnostics: rename few diags:
58      s/'PRESSURE'/'RCENTER '/g
59      s/'TICE    '/'oceFreez'/g
60      s/'TAUX    '/'oceTAUX '/g
61      s/'TAUY    '/'oceTAUY '/g
62      s/'SWFLUX  '/'oceQsw  '/g
63      s/DIFx/DFxE/g
64      s/DIFy/DFyE/g
65      and add few ocean-forcing diagnostics:
66      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
67    o modifications to pkg/seaice/growth.F and budget.F, which change results of
68      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
69      as actual snow thickness.  It now refers everywhere to effective snow
70      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
71    
72    checkpoint58r_post
73    o modifications to pkg/seaice/growth.F, which change results of
74      lab_sea experiment: fixes pertain to melting snow over open water, to
75      masking EVAP under sea ice, and to using the correct AREA variable for
76      computations of EVAP, PRECIP, HSNOW, and GHEFF
77    o add ability to read bathy, salt, and theta using MNC (off by def)
78    o add flooding algorithm and advection of HSNOW for pkg/seaice;
79      both are turned off by default and do no change any results
80    o seaice advection with pkg/thsice: a step toward the use of non-linear
81      advection scheme, but #ifdef or commented out for now (requires more EXCH).
82    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
83      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
84      in natl_box (affects results @ truncation level: update output.txt)
85    o multi-threading and IO:
86      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
87      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
88        (needed to work with SingleCpuIO): tested in all verif. exp.
89    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
90      affects the results (but none of the verification test uses this scheme).
91    o Adding some pkg/diagnostics capability to pkg/seaice
92      (will certainly be subject to changes)
93    o ctrl: adding new control variables:
94      lwflux, lwdown, evap, snowprecip, apressure, runoff
95    
96    checkpoint58q_post
97    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
98      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
99      high_res_cube configuration by 4% on Columbia.
100    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
101      add (in global_with_exf/code) a version of EXF_INTERP_READ without
102      dynamical allocation (seems to work in multi-threaded).
103    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
104      single CPU io) so that TAF does not have to see EESUPPORT.h
105    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
106    
107    checkpoint58p_post
108    o obcs: stop if obcs is used with useCDscheme = .true.
109    o shelfice:
110     - fix a sign error so that no slip at shelfice interface works
111     - remove stop for combination non-hydrostatic code and shelfice. That does
112       not mean, that the results are correct, but at least they are numerically
113       stable
114    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
115    o added adjoint exch routined for all exch*3d* routines
116      and updated flow directives
117    
118    checkpoint58o_post
119    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
120      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
121    o change controling S/R for writing pickup file (new S/R do_write_pickup)
122      and clean-up reading/writing of pickup files.
123    o fix local version of read/write pickup (NH part) in rotating_tank/code
124    o simplify EXCH interface:
125     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
126     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
127    o added the regrid package
128    o shelfice:
129     - add a simple boundary layer scheme to reduce noise
130     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
131    
132    checkpoint58n_post
133    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
134       local variable (not in common block).
135    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
136      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
137      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
138        to work with SingleCpuIO.
139    o add "_d 0" to real constant of pkg/cfc subroutines ;
140       update exp. cfc_exemple & tutorial_cfc_offline output files.
141    o multi-threading and IO:
142      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
143        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
144      - barrier before and after reading.
145      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
146      - avoid using MDS_WRITELOCAL for LAND pkg output.
147      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
148        common-block variables ; Allows multi-threading with master-thread IO.
149    o change default MAX_NO_THREADS from 32 to 4 ;
150      and stop cleanly when MAX_NO_THREADS is too small.
151    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
152    
153    checkpoint58m_post
154    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
155       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
156    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
157       keep global_ocean.90x40x15 (for AD testing) with former secondary test
158       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
159    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
160        add MITgcm_tutorials (= code + all the tutorials)
161    o ecco, option to compute cost for total ssh (mean+anom)
162    o consistent with addition of ptracer and ssh in pkg/profiles
163    o profiles: adding ptracer and ssh
164    o testreport: change multi-test output-file name
165      (from output.txt.{name} to output.{name}.txt)
166    o profiles: now ok for mutli-tiles case
167    o seaice: add 4 parameters for different advection schemes for area,
168      (effective) seaice thickness, enthalphy, and snow height. Their default
169      is the standard parameter SEAICEadvScheme
170    o calc_gw:
171     - add cosFacU in zonal viscous flux (harmonic.visc.).
172     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
173       of tutorial_plume_on_slope.
174    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
175    o calc_gw: true flux-form, account for horizontal grid spacing.
176      update rotating_tank results, but not plume_on_slope (affected at
177      truncation level, 11 digits).
178    
179    checkpoint58l_post
180    o calc_gw:
181     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
182     - remove side-drag for now (need to fix it); update plume_on_slope results.
183     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
184    o commit code to make SST/SSS weights spatially variable
185      (based on either variable in-situ or variable initial T/S weights)
186    o pkg/ecco:
187      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
188        now based on horizontally varying weights wthetaLev, wsaltLev
189      * cost_averagesflags now returns year indices in addition to day, month
190      * sflux balance is performed on annual basis
191        (sflxumm, sfluxmm2, bal_sfluxmm)
192      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
193        including separate counting and multipliers
194    o pkg/rbcs
195      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
196    
197    checkpoint58k_post
198    o testreport:
199     - always build in dir. "build" (if not there, mkdir build instead of building
200       & running in input)
201     - run in dir run (if it exists), in build otherwise.
202     - call prepare_run (if input/prepare_run exists)
203     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
204    o pkg/exf modifications to interpolation and rotation routines for more
205       reasonable treatment of North Pole singularity: for tracers North Pole
206       value is set to northernmost zonal-mean value, for zonal velocity it is
207       set to zero, and for meridional velocity it is set to northernmost value.
208    o pkg/exf/exf_check_range.F
209     - add tile index to diagnostics and move stop statement to the very
210       end of the routine.
211    o pkg/diagnostics: (diagnostics_main_init.F)
212      define title of isomorphic variables according to the current config.
213    o pkg/thsice with pkg/seaice dynamics:
214    - fix domain of computation (interior only, required for exf) and do exchanges
215    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
216    o towards a standard way of dealing with multi-threading in MONITOR
217      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
218    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
219       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
220    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
221    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
222    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
223       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
224    o tracer advection:
225     - clean-up and simplify calc_common_factors.F
226     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
227       advection subroutine (but still not used within DST advection S/R)
228    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
229    
230    checkpoint58j_post
231    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
232      from file (collects calls previously in FORWARD_STEP)
233    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
234    o adjoint store dir. adjusted accordingly
235    o genmake2
236      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
237    
238    checkpoint58i_post
239    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
240      on wind stress (SEAICEstressFactor defaults to 1.)
241    o Total number of Timers is finite (<=40): comment out 2 non-essential one
242      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
243    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
244      on CS-grid: no longer loosing mass.
245    o exf & curvilinear-grid: no longer modify longitude xC & xG.
246    o pkg/ggl90: fix sloppy output and fix a bug
247    o pkg/seaice: added SEAICEuseEVPpickup parameter
248      - Set to false in order to start EVP solver with
249        non-EVP pickup files when using SEAICEuseEVP
250      - fix sign error in diffusion in seaice_calc_rhs
251    
252    checkpoint58h_post
253    * Modifications for bottom topography control
254      o replace hFacC by _hFacC at various places
255      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
256      o add non-self-adjoint cg2d_nsa
257      o update autodiff support routines
258      o re-initialise hfac after ctrl_depth_ini
259      o works for 5x5 box, doesnt work for global_ocean.90x40x15
260    * Adding verification for 5x5 box (4-layer) bottom topography control
261    
262    checkpoint58g_post
263    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
264       used for mean seasonal cycle, mean diurnal cycle); add an example
265       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
266    o pkg/ggl90:
267      - add parameter (minimum surface kinetic energy)
268      - fix bug (avoiding division by zero)
269    o couple pkg/thsice to pkg/seaice:
270      - modify advection in seaice to accomodate new scalar fields to be advected
271      - only muliDimAdection scheme work with seaice/thsice
272      - mapping of thsice-variables to seaice-variables, back and forth
273      - does not break the verification experiments, but does not give the
274        desired results either
275    o pkg/seaice
276      - make (default) second order advection a bit less confusing?
277    
278    checkpoint58f_post
279    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
280      to pkg/seaice):
281      - new routines thsice_map_exf and thsice_get_exf provide the interface
282      - add an additional formal parameter to thsice_solve4temp
283    o pkg/exf:
284      - add new fields wspeed, snowprecip (to be able to couple to thsice)
285      - correct Stefan-Boltzmann constant
286      - new parameter for longwave surface emittance
287      - separate some stuff from exf_bulkformulae into new routines  
288        exf_radiation, exf_wind
289      - add new parameters and constants: longwave emissivity for ocean, ice
290        and snow, evaporation parameters over ice
291      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
292        either wind from stress or stress from wind
293    o pkg/thSIce:
294    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
295    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
296       and THSICE_CALC_THICKN
297    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
298    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
299      to make debugging easier.
300    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
301    o pkg/bulk_force:
302      - clean-up comments and parameters ;
303      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
304    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
305      generate new output for test-experiment: aim.5l_cs.thSI
306    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
307      testreport accordingly
308    
309    checkpoint58e_post
310    o SEAICE_CGRID adjoint done
311    o R_STAR adjoint implemented.
312      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
313      * need to sort out init. of h0facc, etc.
314    o Make pkg/profile fully independent of ecco,cost, etc. stuff
315      to be able to use it in pure forward.
316    
317    checkpoint58d_post
318    o upgrade simple test-experiment to tutorial example:
319     step.1: duplicate the experiment and (step.2) will remove the old copy.
320      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
321      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
322      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
323      tutorial_global_oce_biogeo    <- copy of dic_example
324      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
325      tutorial_plume_on_slope       <- copy of plume_on_slope
326      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
327      tutorial_global_oce_optim     <- empty for now (David ?)
328      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
329     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
330    o correct a sign problem in cost_scat.F
331    o obcs and ptracers: fix boundary conditions for advections schemes
332      with larger stencil
333    o thsice adjoint: start
334    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
335      completeness
336    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
337      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
338    o ptracers adjoint:
339      * avoid extensive recomputatations
340      * fix missing re-init. of gptr (missed by TAF)
341    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
342      me to turn off the excessive output to STDOUT that this package produces
343    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
344      and add those terms in Vector-Invariant formulation.
345    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
346      if the control period (xx_hfluxperiod etc) is 0
347    o in profiles pkg, clean routines and fix details
348    o in ecco pkg, reading ssh data:
349      fix problem in case the model does not start at iter0=0
350    o fix mnc-pickup/restart for ptracers
351    o new package prifiles:
352      code to compute profile-based cost by Gael Forget
353      (modifs in ecco, ctrl, autodiff)
354    o Benign bug fix in initialization (spotted by M. Mazloff) of
355      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
356    
357    checkpoint58c_post
358    o adjoint: finish NLFS adjoint and provide reference output in
359      verification/global_ocean.90x40x15/results_ad_nlfs
360    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
361      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
362      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
363      with SEAICE_CGRID defined.
364    o move calendarDumps from "data" to "data.cal" and clean-up the code
365      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
366    o add useEXF & useCAL flags (for now, set in hard-coded way)
367    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
368      (were missing in NH mode, and wrong in quasihydrostatic mode).
369      waiting for Chris updated version of calc_gw to add those CALLs.
370    o fix bug in quasihydrostatic S/R ;
371      add a test for this option: global_ocean.90x40x15.qshyd
372    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
373      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
374    o add on/off flag useOffLine for package OFFLINE
375    o seaice:
376      - modify advection so that it works also on the C-grid
377      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
378        problem in multi-tile runs with C-grid
379      - add flags for clipping ice velocities and/or masking solver forcing
380      - fix drag (ocean on ice) formulation and a bug that caused noise in the
381        C-grid solver
382      - added a few comments to seaice_diffusion.F
383      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
384        are now exclusive)
385      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
386        required re-ordering the code a little:
387       + make DAIRN global variable (defined in SEAICE)
388       + move computation of the viscosities eta and zeta into a new separate
389         routine (because I need to recompute them in seaice_ocean_stress.F)
390    
391    checkpoint58b_post
392    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
393      update output.txt of exp. aim.5l_cs.thSI
394    o various mnc cleanups and improvements:
395      + shrink lookup tables by factor of ~4
396      + better error reporting when running out of lookup space
397      + able to handle longer path/file names (up to 500 chars)
398    o adjoint:
399      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
400      - TBD: "hidden" mom_vecinv recomp. in dynamics
401    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
402     (allow to differentiate between forcing components using new integer flags:
403      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
404     and add new flag to put Dissipation tendency out of Adams-Bashforth.
405    o ecco
406      - enable trend removal from SSH anomaly obs.
407    o adjoint
408      - a fix for PmEpR when #undef EXACT_CONSERV
409      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
410      - try to fix "hidden" recomp. in forward_step for NLFS
411        (NLFS seems broken sometimes after I checked it in)
412    o seaice:
413     - add c-grid version of the dynamic solver:
414       + three new routines that are the c-grid substitute lsr, dynsolver
415         and ostres
416       + put a few fields that were local to dynsolver into global common
417         blocks, so that I can move the computation of stresses etc into
418         seaice_lsr (saves coding but may break the adjoint).
419     - replace more hardwired parameters by runtime parameters
420     - add ice masks that mask the rhs of the implicit solvers where there
421       is no ice (commented out in seaice_dynsolver, because i am not sure
422       if this works properly), eventually this should replace the clipping
423       of ice velocities in seaice_dynsolver to +/-40cm/s.
424    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
425      include it only where its needed
426    o move balancing of fluxes before the call of external_forcing_surf
427    o seaice:
428      - correct units of turning angles (now they are really in degrees)
429      - move computation of GWATX/Y out of main routine into dynsolver
430      - initialize GWATX/Y in seaice_init
431    o Apply mask on Fresh-Water flux (needed for SSH forcing).
432      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
433    o seaice: add runtime flags for turning angles (default to zero)
434    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
435      and trend from exf forcing and ctrl control adjustments
436    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
437      (since checkpoint57x_post)
438    o change the default rotation period to 86164.s = the Earth rotation
439    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
440      and based on a reference stratification. Tested within hs94.cs-32x32x5.
441    o seaice advection: add code for choosing between the default (2nd order
442      central differences) and multiDim advection schemes provided by
443      pkg/generic_advdiff
444    o seaice:
445      - removed all references to SEAICE_GRID.h fields from
446        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
447        (cubed-sphere configuration will change a little)
448      - grid computations in seaice_init are obsolete now.
449      - cleaned up code a little so that is easier to read (hopefully).
450      - added new (better?) discretizations of default advection and diffusion
451        (turn on with SEAICEuseFluxForm)
452      - replace 1 in 3d global fields by kSurface in growth.F
453      
454    checkpoint58a_post
455    o seaice:
456      - bug fix in advect.F
457    o shelfice:
458      - separate shelfice load anomaly from pload (breaks with time
459        dependent forcing), => introduce constant field shelficeLoadAnomaly.
460        Its default is 0., but it may be computed more cleverly from (unknown)
461        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
462        done offline. A good approximation of the pressure load anomaly is
463        necessary to avoid large initial adjustment processes underneath
464        deep-reaching shelfice.
465      - small fix in ISOMIP shelfice_thermodynamics
466      - add more sophisticated thermodynamics of Hellmer (1989), this is
467        now the default
468      - give a few constants more intuitive names
469    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
470      if bulk formulae are used in long integration (especially EmPmR). Turn
471      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
472      if balancePrintMean, the imbalance that is substracted is printed to
473      STDOUT.
474    o fix bug (typo) in obcs_apply_eta.F
475    o add a new package shelfice which enables us to model the circulation
476      underneath shelf-ice with draughts of hundreds of meters.
477     - works
478     - to do: + include improved thermodynamics
479              + check whether kSurfC (from model/inc/SURFACE.h) can be used
480                instead of new field kTopC
481              + can we use topoFile, Ro_surf and existing code in ini_depth.F
482                instead of new field R_shelfIce and new code in ini_depth.F
483                and ini_mask_etc.F?
484              + adjust vertical mixing schemes?
485    o seaice pkg:
486     - add a cpp-flag to include a simple formula for a salinity dependent
487       freezing point of sea water at the surface
488     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
489       meridional stresses are now different (and hopefully correct)
490    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
491       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
492       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
493    o pkg/diagnostics: add options and parameters for regional-statistics
494       diagnostics ; define regions by reading a region-mask from a file
495       (might add other options later)
496    o pkg/bulk_force:
497     - add option and parameters to use AIM surface-flux formulae.
498     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
499       others forcing fields (defined in PARM05, parameter file "data") are loaded
500       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
501     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
502     - use the right EXCH call for uwind,vwind (to work on CS-grid).
503     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
504       and parameters (note: calcWindStress replaces .NOT.readwindstress).
505     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
506    
507    checkpoint58
508    o add "--embed-source" option to genmake2 which, when the supporting
509      tools can be compiled (as determined by genmake2) will turn on the
510      embed_files package which then embeds the entire MITgcm source code
511      (*.[fFhc] + Makefile) used for the build within the executable
512      - requested by CNH but off by default
513      - adds a paltry <9MB to the mitgcmuv executable in most cases
514      - only writes the output when useEMBEDSRC in eedata is true
515    o clean up 3-dim. relaxation codes:
516      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
517      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
518      * Thanks to Tom Haine for testing!
519    
520    checkpoint57z_post
521    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
522      affects output (@ truncation level) of exp. plume_on_slope ; updated.
523    o fix the pickup behavior for obcs in combination with ptracers
524    o fix a bug in ptracers_external_fields_load
525    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
526      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
527    o transfered surface NH pressure to eta field (if exactConserv).
528    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
529         and update lab_sea output.txt file.
530    o completing 3-dim. relaxation code: additional term
531         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
532      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
533      * At compile time, in "EXF_OPTIONS.h" set
534          #define  ALLOW_CLIMTEMP_RELAXATION
535          #define  ALLOW_CLIMSALT_RELAXATION
536      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
537          tauThetaClimRelax3Dim = 15552000.0,
538          tauSaltClimRelax3Dim  = 15552000.0,
539      * 3 cases:
540          1) Use a constant-in-time 3-dim. field
541          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
542          3) Real-time relax. to time-evolving prescribed field
543    o Adding Laplacian-type smoothness constraint on
544      initial and boundary (forcing) controls (ic, bc)
545      * enable at compile-time via
546        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
547      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
548      * Absolute scale somewhat unclear so far
549      * no area weighting was included since no other cost term does so far
550    
551    checkpoint57y_post
552    First step for a NLFS adjoint
553    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
554    o new init. routines for calc_r_star, calc_surf_dr
555    o still need to deal with ini_masks_etc
556    o testreport seemed happy
557    checkpoint57y_pre
558    
559    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
560    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
561    o add new offset feature to offline pkg (plus minor cleanup)
562    o cfc fixes for final year of integration
563    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
564      be in GCHEM_OPTIONS).
565    
566    checkpoint57x_post
567    o fix testreport Pb in multiple test experiment.
568    o cleanup our namelist syntax in verification:
569      - make it more F95 standards compliant (some work still needed)
570      - allows the vast majority of our tests to work with gfortran
571    o Non-Hydrostatic:
572     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
573     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
574    o Allow to apply AB on T,S rather than on AB(gT,gS):
575     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
576     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
577       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
578     - need a "clever" read_pickup to restart from the other AB formulation
579    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
580    o remove some unused variables (reduces number of compiler warnings)
581    o adjoint
582      * Disable useVariableViscosity for adjoint for time being
583        (there are a number of extensive recomputations)
584      * Initialize certain variables needed for adjoint
585    
586    checkpoint57w_post
587    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
588                 fix the singleCpuIO RS version of MDSWRITEFIELD
589       and add a WARNING if using globalFiles=T with multi-processors.
590    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
591      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
592    o tracer advection scheme:
593      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
594       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
595       was not very convenient).
596      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
597       (further tests needed for the implicit DST & Flux-Limiter schemes).
598    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
599      and sRef for convenience, handy, when you want to initialize
600      ptracers in a large domain with a constant non-zero value. Also,
601      untangle ptracers_init.F a little.
602    
603    checkpoint57v_post
604    o change dome exp. to use variable viscosity in side-drag terms.
605    o remove all the files from the cfc_offline test since they are now
606      incorporated into tutorial_cfc_offline which has been producing
607      identical results for a few days of testing
608    o add new parameter: sideDragFactor to enable half-slip-side BC
609      and change side-drag S/R to use viscosity from mom_calc_visc
610      (can switch back by setting sideDragFactor=0.); affects results at
611      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
612       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
613    o vorticity & strain are now computed without masking, to account for
614      no-slip-side BC in variable viscosity calculation ; mask is applied
615      anyway later on, before computing advection/coriolis terms.
616    o modify exp4 to test new obcs support for reading from external files
617      and for passive tracers
618    o fix behavior of ptracers_monitor when monitor output is written to a
619      netcdf-file; still not independent of monitor.F (writes in the same
620      file).
621    o change default value of tRef (put a uniform, meaningful value for ocean
622      & atmos) and initialize sRef (was missing, as Martin mentioned).
623    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
624      to be proportional to enstrophy dissipation length.  Thus,
625       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
626      This is now consistent with Smagorinsky and with the manual.
627    
628    checkpoint57u_post
629    o OBCS and PTRACERS: add open boundary support for passive tracers
630      - either use homogenous (pseudo) v.Neumann conditions or prescribe
631        OB-values from file; this is not different from the way theta and salinity
632        are treated
633      - however, Orlanski-radiation conditions are not supported, and the model
634        will stop if you use pTracers and Orlanski at the same time.
635      - beefed up the rountine obcs_external_fields_load: now only those open
636        boundary values are overwritten with values from files for which there
637        are really files, otherwise the OB-fields remain untouched. This makes
638        it possible to use different OBs at different ends of the domain (as
639        with EXF)
640    o reduce number of exch calls in shap_filt (s2).
641    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
642      truncation level) 4/5 MLAdjust test results (11&12 digits match).
643    
644    checkpoint57t_post
645    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
646    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
647      same truncation, independent of the face number: affects affects several
648      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
649    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
650      note that biharmonic viscosity + no-slip was not tested in any experiment.
651    o fix bug in non-linear free-surf side-drag ; generate new output for
652      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
653    o make mnc honor the writeBinaryPrec flag for most kinds of output
654    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
655    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
656      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
657    o add brackets in multi-terms sum to get same truncation, independent of
658      the face number (manage to get exactly same value of gU,gV at the cs-edge)
659      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
660    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
661      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
662      a maximum grid-scale Reynolds number.  Also, changes all length calculations
663      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
664      Suggested values of viscosity parameters found in mom_calc_visc.
665      Many new viscosity diagnostics available.
666    
667    checkpoint57s_post
668    o Add clearing-house for viscosity calculations, mom_calc_visc and
669      correct numerous bugs in LeithD and Smagorinsky discretizations.  
670      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
671      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
672      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
673      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
674      The Strain-Tension form is now called with useStrainTensonVisc=.true.
675      ViscAhStrain and viscAhTension are now retired.
676    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
677    o In response to JMC's bug report, genmake2 now ignores any soft-links
678      that it finds in the *current* directory when searching for files.
679      Soft-links found in any other source directories will still work as
680      they did before.
681    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
682      a C routine to unlimit the stack size
683    o mnc-ify pkg/aim snapshot vars
684    o mnc-ify pkg/land as requested by Daniel
685    o various changes to mnc including:
686      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
687      - output can now be grouped so that all files within a group
688          change the ITER portion of their names in lock-step together
689      - can now read ("global") PER-FACE (in addition to PER-TILE) files
690          and works with both EXCH1 and EXCH2 (but needs more testing)
691      - writing works for all verification test cases w/ g77 on Linux
692    
693    checkpoint57r_post
694    o make MNC variable initialization happen earlier
695    o add diagnostics for (almost) each term of the momentum Eq.
696    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
697    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
698    o remove MINIMAL_TAVE_OUTPUT option ;
699      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
700    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
701      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
702    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
703    o add time-dependent SST, SSS control
704    o cost terms in ecco/ modularized (new cost_generic.F)
705    o cost_averages routines are modularized (new cost_averagesgeneric.F)
706    o new infrastructure for seaice model vs. obs misfits in seaice/
707      * driver from the_main_loop.F is seaice_cost_driver.F
708      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
709      * gradient check in Exp. 6a of natl_box_adjoint/
710    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
711      (see README file)
712    
713    checkpoint57q_post
714    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
715    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
716      - bug was reported by Jean-Michel and Ian Fenty
717    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
718      update exp. cpl_aim+ocn output.
719    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
720      Needed for high-res. runs with large global files
721      to be able to limit tapelev size
722    o Changed some tests for adjoint:
723      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
724      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
725      * global_ocean.90x40x15/ back to default 3-level checkpointing
726    o Modifications to enable scripted COMMON to MODULE conversion
727      * verification/OpenAD/code/ has necessary scripts and description;
728      * converts, compiles and runs successfully;
729    
730    checkpoint57p_post
731    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
732    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
733      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
734    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
735    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
736      (was already the case for dissipation with mom_vecinv,
737       and also the case for grad.PhiHyd when staggered-timeStep)
738      This will allow to put dissipation out-off the AB time-stepping.
739     Unfortunately, affects truncation error. Update output of exp. that "fails"
740      (cg2d matching number) and leave the others for later: front_relax(10),
741      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
742      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
743    
744    checkpoint57o_post
745    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
746      (2) its ready to be documented during the 20050801 DocFest
747    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
748      for ideal_2D_oce and lab_sea on linux_ia32_g77
749    o set to #undef CTRL_SET_OLD_MAXCVARS_30
750      in global1x1_tot/code_seaice_adj to access indices 32, 33
751      (worth another tag)
752    
753    checkpoint57n_post
754    o adding precip control xx_precip 32
755    o adding swflux control xx_swflux 33
756    o Replacing 10 forcing penalty cost routines by 1 generic.
757    o Implementing partitioning in time-mean and variable adjustment
758      for atmos. state.
759    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
760    o in natl_box_adjoint:
761      * updated exp 1 to 10
762        (but does not have time-mean vs. variable split results yet)
763    o updated global1x1/*_seaice_adj/
764      to incorporate latest changes
765    o enable useSingleCpuIO for mdsio vector routines
766      (applies in particular to tapelev I/O)
767    o removed inefficient K-loop in all active_file*control*.F
768    
769    checkpoint57m_post
770    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
771      and advect_cs (use EXCH-2 and standard cs-32 grid files).
772    o pkg/exch2: filling of face-corner halo regions is optional
773      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
774    
775    checkpoint57l_post
776     tag before updating tutorials (pre-release-2)
777    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
778       for output and interpolation of input fields onto model grid)
779    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
780       Affects results of exp. rotating_tank ; update output.txt.
781    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
782          and taking the square quantity and/or using a fraction-weight field.
783    o fix aim_diagnostics_init.F mate numbers.
784    o add mnc output capability to diagnostics/diagstat and update
785      our cvsignore files for the ACSII output generated
786    
787    checkpoint57k_post
788    o lab_sea now uses diagnostics package and provides a suite of
789      new EXF diagnostics output.
790    
791    checkpoint57j_post
792    o exf
793      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
794        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
795        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
796      * extended diagnostics output
797        - now includes all EXF variables
798        - hs, hl moved to common block
799        - separate S/R for diagnostics, called after ctrl vector is added
800        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
801        - EXFqnet contains true Qnet (i.e. includes qsw)
802      * updated verif. lab_sea, global_with_exf
803      * Rearranging hflux (exf_mapfields -> exf_getforcing)
804        to ensure that diagnostics sees a true EXFqnet
805    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
806    o diagnostics pkg: change pointers so that 1 diagnostic can be used
807      several times with different frequencies.
808    o mnc-ify the thsice package as requested by Daniel Enderton
809      - the monitor--MNC output needs work
810      - many attributes need to be added (most are currently blank)
811    o mnc-ify theaim_v23 package as requested by Daniel Enderton
812      - many attributes need to be added (most are currently blank)
813    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
814    o add Sadourny like discretization to the 4th.O vorticity advection scheme
815    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
816      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
817         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
818    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
819     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
820    
821    checkpoint57i_post
822    o Diagnostics package was changed: diagnostic allocation is now deactivated
823      by setting an empty file name in the namelist (used to be by setting 0 frequency)
824    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
825      add 1rst Order upwind vertical Shear.
826    o add a quick fix for A/B checkpointing in OFFLINE mode
827    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
828      end-run around the C/Fortran linking horror in eesup/src/timers.F
829    o added pkg/runclock: allows user to terminate run based on wall clock
830    o added non-hydrostatic scaling parameter: nh_am2
831    o pkg/my82: futile attempt to make results compiler-independent by adding
832      some "_d 0", etc. no effect.
833    o for mnc output, fill the 'T' coordinate var with myTime and create a
834      separate 'iter' variable for iteration count
835    o pkg/diagnostics:
836      add new capability: output of Global/Regional & per-level statistics ;
837      tested against monitor output (including land & thSIce) on various exp.
838    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
839    
840    checkpoint57h_done
841      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
842      data.diagnostics, data.gchem, data.ptracers) is done.
843    
844    o pkg/diagnostics: prepare for Global/Regional statistics.
845      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
846    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
847      and rename it: DIFFERENT_MULTIPLE
848    
849    checkpoint57h_post
850    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
851    o pkg/diagnostics: change output frequency, now in seconds (instead
852      of Nb of iterations). This requires to change data.diagnostics.
853    checkpoint57h_pre
854    
855    o in mnc, let the user create the output dir if both mnc_outdir_date
856      and mnc_outdir_num are false
857    o add fflags() to pkg/diagnostics which allows one to specify, on a
858      per-file basis, the file precision [default behavior is unchanged]
859    o added diagnostics to pkg/kpp, including computation of mixed layer
860      depth based on a temperature/density criterion
861    o updated verification/natl_box to test the new pkg/kpp diagnostics
862    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
863    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
864    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
865      not mnc -- this mistake was found by JMC and is now corrected
866    
867    checkpoint57g_post
868    o add Adams-Bashforth 3rd Order time stepping:
869      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
870      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
871    checkpoint57g_pre
872    
873    o make lambda[Theta,Salt]ClimRelax spatially varying
874      (default remains spatially uniform constant based on tau)
875    o added new control variables
876      * init. uVel, vVel, etanN
877      * lambda[Theta,Salt]ClimRelax
878    o separate masks used for ctrl_pack/unpack 'from write_grid' output
879      (suggested by G. Forget)
880    
881    checkpoint57f_post
882    o add parameter "baseTime" = model base time = time at iteration zero
883      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
884      account for baseTime shift
885    o move Coriolis arrays from PARAMS.h to GRID.h
886    checkpoint57f_pre
887    
888    o mnc-ifying the seaice package
889    o introduced an alternative length scale calculation for use in the limiting
890      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
891    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
892    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
893      as well as grad(vort3).  Made it compatible with both approximate form
894      for the cubed sphere and full form of these gradients.  Added flag
895      useFullLeith to select between approximate and full form.  
896    o add "d0" in getcon.F to reduce differences between compilers/platforms
897      update output.txt of exp. fizhi-gridalt-hs
898    o change port_rand funtion to allow to set the seed.
899    o fix obscure MNC bug involving conversion between reals and integers
900      - it caused no problems with certain (eg. gcc, ifc) compilers but the
901        new version is now more standards-compliant
902    o adjoint-related modifications
903      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
904      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
905      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
906    
907    checkpoint57e_post
908    o Adding eddy stress controls a la Ferreira et al.
909    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
910    
911    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
912      update output.txt of exp. fizhi-gridalt-hs
913    o add more "Z" dimensions and associated coordinate vars to MNC
914    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
915    o parameter calendarDumps: when set, approximate months (30-31 days) and years
916      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
917      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
918      months and years.  Requires pkg/cal.
919    o diagnostics: add pickup functionality
920      - off by default for backwards compatibility
921      - current version only uses MDSIO -- MNC will be added
922    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
923    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
924    
925    checkpoint57d_post
926    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
927    o modify verification/ideal_2D_oce so that it tests the creation of mnc
928      output from the diagnostics package
929    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
930    o make genmake2 more portable by using ".$FS" instead of ".f" for more
931      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
932    o add coordinate variables to the MNC output from the diagnostics package
933    o change MNC-flags default value: true when useMNC=TRUE
934    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
935      the ability (off by default) to read the grid information using MNC
936    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
937    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
938    o do snap-shot diagnostics at the middle of the time-interval (instead of
939      at the end).
940    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
941      new test for AIM with thSIce + slab-ocean
942    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
943    o move state variable diagnostics to the beginning of the time step ;
944      (note: still needs some work specially for snap-shot diagnostics)
945      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
946    
947    checkpoint57c_post
948    o Change testing option (-ieee) to get closer agreement between g77 & ifort
949    o generate new output.txt files on faulks with g77 & the new -ieee option
950    checkpoint57c_pre
951    
952    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
953      update output.txt of exp. global_ocean.90x40x15
954    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
955      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
956    o add saltFlux(+File) forcing capability with periodicExternalForcing
957    o allow to use pkg diagnostics for GM-Redi & ThSIce output
958    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
959    o improvements for the MNC output from DIAGNOSTICS:
960      - correct handling of the unlimitied dimension
961      - all dims now have associated coordinate variables
962      - variables located at U, V, and Corner ("Z") points are now written
963        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
964        *all* data points are output
965    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
966    o added pkg/seaice/seaice_monitor.F
967    o mdsio_readfield.F can now read files visible only to master MPI process.
968    o pkg/seaice: some test code for ice-modified ocean stress
969    o exf_getffields interpolation defaults to bilinear for all scalar forcing
970      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
971      spurious negative numbers for precipitation and humidity.  Will cause
972      some small numerical differences for integrations using pkg/exf/exf_interp.F.
973    o pkg/ctrl/
974      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
975        May be enabled via doPackDiag
976      *  introduce z-scaling of
977         + gradient (doZscalePack) and
978         + control (doZscaleUnpack)
979    o pkg/mdsio/
980      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
981      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
982    
983    checkpoint57b_post
984    o simplify options in diagnostics_fill arguments (remove weird combinations)
985    o fix MNC coordinate variables so that they now contain per-face index
986      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
987      general, EXCH2 grids are only aligned to a "local" coordinate system
988    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
989    o Implement instantaneous output within pkg diagnostics:
990      setting a negative frequency in data.diagnostics produces
991     "snap-shot" output (as opposed to time-average if freq > 0)
992    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
993      NOTE: change ptracer diagnostics name: use 2 characters to work with
994            more than 9 tracers. Add also diagnostics of advect & diffus flux.
995    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
996      becomes the coordinate variable for the 'T' dimension
997    o add CF-style coordinate variables to MNC
998      - just a first cut:  numbers are meaningless on the cubesphere and
999        missing along the T axis but otherwise it works!
1000    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1001    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1002    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1003      this is based directly on what the model compute, so that the content of
1004      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1005    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1006    o clean up build options files for SunOS, in particular
1007      - remove -traditional from xmakedepend
1008      - change -xarch=v9 to -xarch=native for f77
1009      - restore use of make (not gmake)
1010      - add CC=gcc if using g77
1011    o changes per discussion of AM, JMC, & EH3 today:
1012      - move redundant "grid" variables out of "state" -- in preparation of
1013        creating proper CF-style coordinate variables and in recognition
1014        that any/all grid variables can be easily copied (eg. w/NCO) from
1015        the grid files into any of the other NetCDF files
1016      - *always* output grid variables with MDSIO (this will eventually be
1017        changed)
1018      - output MNC grid file if useMNC is true
1019    o every instance of _END_MASTER() has been found and replaced with
1020      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1021      preprocessors
1022    o re-arrange diagnostics pkg initialisation:
1023     - allow each package to extend the available diagnostics list
1024     - add some checking and fix small problems (multi-threaded, ...)
1025     - new S/R diagnostics_fill (replace fill_diagnostics):
1026       look through the short list of active diag. (instead of the long list)
1027       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1028    
1029    checkpoint57a_post
1030    o this set of changes restores TAMC compatibility
1031      tested for global_ocean.90x40x15 adjoint on trough
1032      (what a pain)
1033    
1034    checkpoint57a_pre
1035    o some modifs in tools/build_options for sunos
1036    o call ctrl_pack for ctrl at end for optimcycle=0
1037    
1038    checkpoint57
1039    o add horizontal bi-harmonic viscosity for vertical velocity
1040      - new parameter viscA4W (defaults to viscA4)
1041      - affects only non-hydrostatic code
1042      - to be done: no-slip lateral boundary conditions
1043    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1044    o implement Implicit Vertical advection for pTracers
1045    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1046      (implemented also for implicit vertical diffusion & advection)
1047    o OBCS: extend application of tracer open boundary conditions
1048      to a strip beyond the boundary of width Olx/Oly
1049    o add call monitor to TAF set of required calls (flow directives)
1050      and include in natl_box_adjoint
1051    o untangle a few ifdefs related to cost, ctrl, autodiff
1052      untangel a few ALLOW_ECCO_OPTIMIZATION
1053    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1054      (theta2, salt2 in ecco_cost_weights)
1055    
1056    checkpoint56c_post
1057    o OBCS as control variables
1058      - update ctrl_ad_diff.list, obcs_ad_diff.list
1059      - remove balance of obcs controls from default
1060      - fix index bug nobcs in ctrl_init
1061      - fix dummy fields filen in ctrl_pack
1062      - add dummy weights for obcs
1063    o lsopt: comment out fort.94 output
1064    o optim:
1065      - remove unnecessary header files
1066      - adjusted namelists
1067      - add xerbla.F to Makefile
1068    o exf:
1069      - multiple modifications of exf_check_range
1070      - unit change in exf_init_runoff from [m/year] to [m/s]
1071    o mdsio:
1072      - i/o-vector change debugLevel from debLevA to debLevB
1073    
1074    checkpoint56b_post
1075    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1076      is called from DO_THE_MODEL_IO
1077      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1078      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1079      - clean up PTRACERS_WRITE_TIMEAVE a little
1080    o add another verification experiment that tests both the cfc-pkg and
1081      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1082      reactive tendencies treated inline with regular timestepping
1083    o testreport previously did a lousy job of comparing small numbers, so
1084      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1085      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1086      testreport.
1087    o ptracers_monitor: bug fix for MPI
1088    
1089    checkpoint56a_post
1090    o GCHEM: finish reorganizating the package
1091      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1092        (introduces another 3D-array for each passive tracer, but only if
1093        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1094        gchemTendency is not needed because the timestep is done separately)
1095      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1096      - GCHEM is now---more or less cleanly---separate from PTRACERS
1097      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1098        so clear to me how that should be done in a general way.
1099    o CFC: improve formatting of output in CFC_ATMOS
1100    o PTRACERS:
1101      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1102        that ALL experiments with ptracers enable can be checked. This makes
1103        GCHEM_MONITOR obsolete.
1104      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1105        monitorFreq
1106      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1107    o add PTRACERS (PTR0[1-5]) to testreport output
1108    o exf_check_range:
1109      * default changed to .TRUE.
1110      * will check values for niter0 if debLevA, every timestep if debLevB
1111      * STOP in exf_check_range if 'out of range'
1112      * range chosen generous to allow for potential extema
1113      TBD: a version with stricter range
1114           permitted range would be runtime parameters
1115    o GMredi:
1116      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1117      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1118      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1119    o GCHEM:
1120      - move call to GCHEM_FORCING_SEP, so that it is now called before
1121        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1122      - introduced a useGCHEM runtime flag and applied it everywhere.
1123      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1124        this flag is now only visible within GCHEM-pkg routines.
1125      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1126        be replaced by a 3D array that is computed before thermodynamics; for
1127        this, the tracer ID iTracer had to be included into the parameter list
1128        of ptracers_forcing
1129      - set up forward_step to call gchem_forcing, that will replace
1130        gchem_forcing_int in ptracers_forcing
1131      - cleaning up
1132    o small cleaning of exch2: remove files that are also in eesupp/src
1133    
1134    checkpoint56
1135    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1136    o mnc: cleanup "full" files--fixes out-of-memory problem
1137    o ECCO-GODAE
1138      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1139      * fully merged and updated from SIO code
1140        windstress sign change affects
1141        - exf_inscal_[u/v]stress
1142        - sign of xx_tau[u/v] adjustments
1143        - signs in cost_scat
1144      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1145      * natl_box_adjoint updated and compressed
1146      * 2-level checkpoint switch added
1147        (tested in EXP. 1 of natl_box_adjoint)
1148      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1149    o SVD
1150      * first complete, non-hacked version for SVD calculations
1151      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1152        performed via direct access files admtlm_vector.it????
1153        (via ctrl_[un]pack)
1154      * optimcycle is used for ARPACK iteration counter
1155        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1156      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1157        and add linear transforms where necessary
1158      * controls are initial/final SST, SSS (can be extended; need to check
1159        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1160    o mdsio: filename info to both stderr, stdout
1161    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1162      from sign change
1163    
1164    checkpoint55j_post
1165    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1166      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1167    o add consistent build directories and .cvsignore files to verification
1168    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1169    o make all subroutines 30 or less characters in length for certain older
1170      compilers to work (a thorough search only turns up two routines in
1171      pkg/ptracers)
1172    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1173      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1174    
1175    checkpoint55i_post
1176    o change arrays for total vertical diffusivity (2.D if explicit,
1177      3.D if implicit) ; each ptracer uses its own background value.
1178    o added mnc/NetCDF output capability to ocn_compon_interf
1179      - added bits to verification/cpl_aim+ocn so that it can run on
1180        ITRDA and other clusters without the mpirun "-wd" option
1181    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1182      configuration
1183    o give MNC the ability to create additional files rather than
1184      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1185      - the default is just less than 2GB which is a practical limit
1186        on many systems
1187    o Compute the non-local term using either KPP vertical diffusivity (=default)
1188       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1189    
1190    checkpoint55h_post
1191    o add verification test "vermix"
1192    o remove all the *_ioinc flags and replace with the single global
1193      outputTypesInclusive flag
1194    o allow to set a vertical profile of vertical diffusivity for T & S
1195    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1196    o useMNC moved from data.mnc to data.pkg
1197    
1198    checkpoint55g_post
1199    o Renaming carbon AD experiments to comply with testreport conventions
1200    o Updating adjoint of Held-Suarez hs94.1x64x5
1201    o Fixing directives for non-ECCO forward_step, after ECCO directives
1202      have been fixed to avoid recomp. of do_oceanic_phys
1203      Works well for global_ocean.90x40x15,
1204      but recomp. issue remains for carbon
1205    o Updating adjoint output for natl_box_adjoint after
1206      pkg/ecco has been modified (see taga c55d_post)
1207    
1208    checkpoint55f_post
1209    o rename to timeave_init_fixed
1210    
1211    checkpoint55e_post
1212    o some delicate re-shuffle of store directives to avoid one
1213      extra call of do_oceanic_physics
1214      affects ecco_the_main_loop.F, do_oceanic_physics.F
1215      checkpoint_lev1_directives.h
1216    o NB: this may break global_ocean adjoint temporarily,
1217      but it is clear how to fix it. Will do later, need this now.
1218    
1219    checkpoint55d_post
1220    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1221    o ecco_cost_weights is modified to 1x1 runs
1222    o modifs to allow observations to be read in as
1223      single file or yearly files
1224    o enable to read exf forcing fields as either
1225      single file or yearly files (flag useExfYearlyFields)
1226    checkpoint55d_pre
1227    
1228    o switch between 2-level and 3-level checkpointing
1229    o add ability of MNC to write local and "partial" (eg. 2D slices where
1230      the full 3D field is never actually stored) arrays to NetCDF files
1231      with the correct (that is, the complete multi-dimensional) set of
1232      array indicies
1233      - used in mom_vecinv() to write the diagFreq output
1234      - tested (demonstrated) in verification/aim.5l_cs
1235    o further mnc-ification
1236      - add verification/lab_sea to the list with mnc setups
1237      - fix undefined mnc v-names in cd_code
1238      - add kpp to mnc output (both snapshot and timeave)
1239    o non-hydrostatic code
1240      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1241        in calc_gw.F
1242      - defaults to viscAh
1243      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1244        friction or Leith) in non-hydrostatic mode, as long as there is
1245        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1246    o pkg/cost
1247      extend simple cost functions to treat time mean quantities
1248      (T,U,V) via cost_accumulate_state from cost_tile
1249    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1250        be 2 times larger than the minimum size the advection scheme requires.
1251        now get a perfect conservation of salt in advect_cs test-exp (updated)
1252    o GGL90 (Gaspar's TKE mixed layer)
1253      - add horizontal diffusion of TKE, requires exchanges in
1254        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1255        default. In OPA there is no horizontal diffusion of TKE but the
1256        mixing coefficients are computed from a horizontal average of TKE of
1257        6 points or so. I think that diffusion has a little more physical
1258        justification.
1259      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1260        was in vain)
1261      - mask tke-variable in ggl90_init
1262    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1263    o fix biharmonic diffusion on CS-grid.
1264    o more obcs stuff
1265      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1266        for reading boundary values. This routine is called from
1267        obcs_prescribe_read
1268      - updated obcs_check
1269      - changed sponge layer relaxation parameter units for days to seconds
1270      - turned off sponge layer by default
1271      - changed argument list of OBCS_CALC to myTime+deltaTclock
1272      - fixed about 35 bugs in obcs_external_fields_load
1273    
1274    checkpoint55c_post
1275    o obcs stuff
1276      - new runtime flags useOBCSprescribe, useOBCSbalance
1277      - re-arranged obcs_calc
1278      - moved exf_getobcs to obcs_prescibe_read
1279        obcs_prescibe_read is called after ORLANSKI stuff
1280        and independent of it (executable can contain all).
1281      - updated obcs_check
1282      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1283        These may be necessary only if tangential velocities are
1284        prescribed at OB, not sure, needs testing.
1285    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1286      which simplifies the calls and passes the ifc check-bounds test
1287    
1288    checkpoint55b_post
1289    o add a 2D scalar, Z location, exchange_2 routine.
1290    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1291      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1292      affects advect_cs results (for the wrong reason): update output.txt
1293    o use a more standard discretization for biharmonic viscosity ;
1294     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1295      affects results of dome set-up: update output.txt
1296    o fix gad_advection.F (CubedSphere part), back to version 1.23
1297    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1298    
1299    checkpoint55a_post
1300    o merged code to
1301      * prescribe/read time-dependent open boundaries
1302        (works in conjunction with exf, cal)
1303      * sponge layer code for open boundaries
1304      * each boundary N/S/E/W now has its own CPP option
1305        (healthy for the adjoint)
1306    
1307    checkpoint55
1308    o up-to-date adjoint of previous breaks
1309      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1310      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1311      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1312      - carbon: * remove tr1-related adjoint verification
1313                * add ptracer as control variable
1314    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1315      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1316    
1317    checkpoint54f_post
1318    o in verification/carbin/ remove experiment related to
1319      ALLOW_PASSIVE_TRACER (array tr1 etc)
1320      code_ad/ input_ad/ results_ad
1321    
1322    o add two new packages
1323      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1324        + subject to optimization (memory)
1325      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1326        + subject to reordering (many GOTOs in the original code)
1327        + so far opps is called for every (i,j) point, and then operates in
1328          the vertical; one may want to reorder the scheme in order operate in
1329          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1330          fields)
1331    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1332      - all verification tests compile and run with linux_ia32_g77
1333      - defaults are compatible with current input files--nothing
1334        should change if you were not previously using MNC
1335      - MNC output has been added in numerous places (eg. timeave)
1336        but there are still a few writes not yet do-able with MNC
1337        (this is in progress)
1338      - flags now allow for either/or/both use of MDSIO and MNC and
1339        documentation will soon follow
1340      - numerous small formatting cleanups for ProTeX
1341    o add version info (via BUILD_INFO.h) to MNC and stdout
1342    
1343    checkpoint54e_post
1344    o add two new packages
1345      - pp81 (Packanowski and Philander, 1981), Richardson number and
1346        stratification dependent mixing
1347      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1348      - these scheme operate in a similar manner as KPP (without ghat, of
1349        course), however there is only one diffusivity that is used for both
1350        temperature and salinity (and passive tracers)ç
1351    o add offline package
1352    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1353      provided by Stephanie Dutkiewicz
1354    o genmake2: add ability to search for C compilers and cleanup test output
1355      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1356    
1357    checkpoint54d_post
1358    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1359    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1360      leading to additional shift by 5 days each year of integration
1361       (i.e. leading to considerable offset over the years)
1362    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1363    o start with no AB and no initial filtering (staggerTimeStep):
1364      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1365    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1366      (external loading & cpl import/export stay in forward_step.F)
1367    o update coupling interface to work with new staggerTimeStep
1368    o change MDSIO ptracers_pickup.
1369    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1370    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1371    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1372    
1373    checkpoint54c_post
1374    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1375      this affects (truncation error) output.txt of test-exp:
1376       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1377    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1378    o change Qnet to always be the net heat flux, (+upward).
1379      affects (truncation error) output of natl_box exp.: updated
1380    o define the max number of passive tracers in PTRACERS_SIZE.h
1381    o start to test mnc routinely in exp0
1382    o add sea-ice loading (sIceLoad) as a new forcing field.
1383    
1384    checkpoint54b_post
1385    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1386       impressive on Altix and Opteron systems)
1387    o diagnostics can now write NetCDF files through the mnc package
1388    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1389    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1390    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1391      affects (truncation error) output of lab_sea & natl_box exp.: updated
1392    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1393    
1394    checkpoint54a_post
1395    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1396    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1397    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1398    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1399      + internal_wave (shift in writing cg2d_ini_res)
1400    checkpoint54a_pre
1401    
1402    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1403      - modified verification/lab_sea and natl_box_adjoint accordingly
1404    
1405    checkpoint54
1406    checkpoint53g_post
1407    o prepare splitting of thermodynamics: store convect.counter in common block
1408    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1409      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1410    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1411    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1412    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1413    o restore adjointability
1414    
1415    checkpoint53f_post
1416    o modifications that affect AIM experiment results (update output.txt):
1417      - no advection of S at top interface Nr (pkg/generic_advdiff)
1418      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1419    o AIM pkg:
1420      - include stability function into surf.Flux derivative relative to Tsurf
1421      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1422    
1423    checkpoint53e_post
1424    o merged cylindrical coord configuration
1425    o added rotating_tank experiment
1426    checkpoint53e_pre
1427    
1428    checkpoint53d_post
1429    o faulks upgraded: re-generate output.txt that have changed:
1430       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1431    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1432    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1433    o added Sadourny discretization of Coriolis
1434      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1435      - re-enabled use of omega3 (useAbsVorticity)
1436    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1437      vector-invariant equations
1438      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1439    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1440      hopefully without new bugs
1441      - still to do: biharmonic friction for non-hydrostatic w
1442    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1443    o regenerated output for global_ocean_ebm (using -ieee)
1444    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1445      of mom_common/
1446      - simple re-arrangement of instructions within computing loop
1447    checkpoint53d_pre
1448    
1449    checkpoint53c_post
1450    o new version of coupler for AIM+thSIce and Ocean models
1451     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1452     - land: change Evaporation of snow
1453     - aim with thSIce: fix bug in snow-precip.
1454    o changes to calc_gw.F
1455     - bug fix for w^2 term near the bottom boundary
1456     - (hopefully) improve the lateral slip boundary condtions for use with
1457        partial/looped cells
1458      - because the bug fix changes two verification experiments anyway (exp5
1459        and plume on slope), change the lateral boundary condition from half slip
1460        to the value of no_slip_sides
1461    o ebm package wasnt quite up to the parallel task. Fixed that.
1462    o Adjoint of EBM package + verification
1463      * TLM OK
1464      * ADM not sufficient accuracy yet (needs further testing)
1465    
1466    checkpoint53b_post
1467    o Commiting new energy balance model to repository
1468      * package is pkg/ebm
1469      * verif. is verification/global_ocean_ebm
1470      * references are in ebm_driver.F
1471    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1472    C        Global thermohaline circulation. Part I:
1473    C        Sensitivity to atmospheric moisture transport.
1474    C        J. Climate 12(1), 71-82
1475    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1476    C        Global thermohaline circulation. Part II:
1477    C        Sensitivity with interactive transport.
1478    C        J. Climate 12(1), 83-91
1479    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1480    C        Destabilization of the thermohaline circulation
1481    C        by atmospheric eddy transports.
1482    C        J. Climate 7(12), 1870-1882
1483    o Will need long integration testing.
1484    checkpoint53b_pre
1485    
1486    o created pkg/mom_common in preparation for variable viscosity code
1487    o renamed and split ini_mnc_io
1488    o pkg/land: only liquid water can diffuse or run-off
1489    o AIM using land: soil wetness availability account for snow
1490    o added printMapIncludesZeros to EEPARMS namelist
1491    
1492    checkpoint53a_post
1493    o restore TAMC compatiility for exf_constants.h
1494      (no usage of _d in .h)
1495    o Additional storing in KPP in an attempt to fix
1496      TAMC problem with adjoint of KPP code.
1497      (no success...)
1498      Identical code works fine with TAF.
1499    o Fixed verification/natl_box_adjoint experiments.
1500      Initial conditions for Experiments 4 and 5 are now
1501      set to "SEAICE_initialHEFF=0", which is more reasonable,
1502      and hence gives results closer to that of Experiment 2.
1503      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1504    
1505    checkpoint53
1506    o stable checkpoint with up to date adjoint
1507      TLM tests only run for 1st grdchk at the moment. Its unclear if
1508      this is a code problem or a problem with resetting code for g_
1509      variables that is being autogenerated wrong.
1510      Otherwise:
1511       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1512       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1513         are both still in chaos following their security messes.
1514    
1515    checkpoint52n_post
1516    o various build (mostly genmake2) changes including:
1517      - ability to build/run more easily within Cygwin and MacOS X
1518      - more complicated Makefiles with a stronger dependence on Gnu Make
1519    o pkg/seaice modifications
1520      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1521        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1522        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1523      - changed proxy for geostrophic velocity and updated
1524        verification/lab_sea/results/* accordingly
1525      - removed ADI dynamic solver from pkg/seaice
1526      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1527        they caused a segmentation fault under certain circumstances
1528      - removed unused field WATR
1529    o bug fix in exf-package:
1530      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1531         now reflect that.
1532    o small fixes in the cal-package:
1533      - set reference date to first of January for the 'model'-calendar
1534      - failing of cal_CheckDate in cal_FullDate now actually results in a
1535        warning
1536    o small modifications in exf-package to increase flexibility:
1537      - change climtempfreeze from a constant to a runtime parameter that
1538        is specified in data.exf_clim (default = -1.9)
1539      - introduce runtime parameter windstressmax (default = 2.0) that is
1540        specified in data.exf
1541    o fix in pkg/thsice:
1542      - update Evap (Tsf changes) to be consistent with Latent heat flux
1543      - maintain snow precipitation unchanged (even if Tsf >=0).
1544     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1545    
1546    checkpoint52m_post
1547    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1548      this does not change any of the results, because myIter=0 in swfrac always
1549      lead to jwtype=2 (the default anyway), but the call makes little sense
1550      as a default
1551    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1552    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1553      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1554    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1555    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1556    o extending useSingleCpuIO option to work with new exch2 I/O format
1557      - old-style, missing-tile I/O is still accessible by defining CPP
1558        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1559    o monitor package can write to NetCDF files and/or STDOUT
1560    o fix re-definition bug in MNC_GRID_INIT_ALL()
1561    o doc/api_reference added
1562      - a framework for building an API Reference Manual using all
1563        the "protex" comments embedded in the code
1564      - see pkg/generic_advdiff, pkg/mnc for examples
1565    o MNC:
1566      - make myThid the last argument for all subroutines
1567      - new default for the grid files: NO halos
1568      - add useMNC and other run-time flags
1569      - separate per-file-group handling of the unlimited dimension
1570      - early initialization of MNC w/ flags read at the eeboot stage
1571        and lookup tables set in initialize_fixed
1572      - write all MNC output to a freshly-created directory
1573    o thermodynamics sea-ice (thsice) is now tested with testreport.
1574    o test exp. advect_cs: use the standard cs32 grid ; update output.
1575    o Added functionality to grdchk:
1576      pick global i,j,k position (or nearest wet) where to perform check.
1577    
1578    checkpoint52l_post
1579    o new land formulation:
1580      a) use ground enthalpy as prognostic variable to ensure exact
1581         energy conservation.
1582      b) account for water temperature and for latent heat of freezing
1583         in all processes (rain, run-off, ground storage)
1584      c) compute surface and ground temperature implicitly.
1585    o aim_v23 modification for new land model:
1586      a) Treat separately land / ocean / sea-ice surface fluxes
1587         to allow implicit computation of land & sea-ice surface temp.
1588      b) add snow precipitation.
1589    checkpoint52l_pre
1590    
1591    o fix problem (when 1 tile is empty) in min/max monitor.
1592    o fix bug in timeAve (u,vZetatave in common block)
1593    o no restoring terms under ice for pkg/seaice
1594    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1595    o bug fix for pkg/seaice pickups
1596    o change MNC call locations and add coordinate attributes
1597    o mask vorticity at the corner ; affects global_ocean.cs output
1598    o fix ini_curvilinear_grid ; test CS experiments with mpi
1599    o aim.5l_cs: modify sea-ice fraction input file ; update output
1600    o exf: Adding simple range check routine for exf fields after read
1601    
1602    checkpoint52k_post
1603    o removed top-level directory "diags"
1604      - we migrated these functions to pkg/timeave a long time ago
1605    o fixed bug introduced in pkg/monitor
1606    o accuracy ctrlprec = 32 insuffient for gradient checks using
1607      averaged fields (I/O via cost_averages)
1608      -> use ctrl.h in active_file*.F to control I/O precision.
1609    o paramter list of CALL ADTHE_MAIN_LOOP
1610    o added initial do_the_model_io to ecco
1611    o set all ...Freq to zero after cost_final
1612      taveFreq, dumpFreq, pChkptFreq
1613    o MAIN and ECCO differentiability restored
1614    
1615    checkpoint52j_post
1616    o fix nchklev in tamc.h for global_ocean...
1617    o Bringing flow and store directives up-to-date
1618    o Really weird thing!
1619      call do_the_model_io from the_main_loop with parameters
1620      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1621      TAF places a faulty re-call of initialise_varia
1622      after cost_final call which should not be there!
1623    checkpoint52j_pre
1624    
1625    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1626      error messages
1627    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1628    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1629      debug output
1630    o modfied mdsio_writefield.F to handle non-global files under exch2
1631    o update AIM Cubed-Sphere exp (aim.5l_cs):
1632      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1633    o update AIM Equatorial Channel exp:
1634      use standard aim_v23 pkg and change the SST fields to be more realistic.
1635    o globalFile now works with exch2
1636    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1637      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1638    o limit timeave output for hi-res integrations
1639    
1640    checkpoint52i_post
1641    o removed CPP_EEOPTIONS.h from verification/*/code
1642    o updated the tiling for global_ocean_pressure
1643    checkpoint52i_pre
1644    
1645    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1646      the old pkg/aim).
1647    
1648    checkpoint52h_pre
1649    o shortened offending lines in exch2_send_rx?.template
1650    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1651    o genmake2: add build & execute test for NetCDF code
1652    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1653      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1654    o added useSingleCPUIO flag to monitor.F and mon_out.F
1655    o added temporary hack for sea-ice dynamics on the cube:
1656      metric terms are ignored and it is assumed that
1657      there is no sea-ice on cube faces 1, 2, 4, and 5.
1658    
1659    checkpoint52f_post
1660    o added exch2 cube routines to pkg/exch2
1661    o modified hs94.cs-32x32x5 to use it
1662    o added new grid files to hs94.cs-32x32x5
1663    checkpoint52f_pre
1664    
1665    checkpoint52e_post
1666    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1667      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1668    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1669      to work with implicit vertical advection and AB ;
1670    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1671    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1672     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1673    checkpoint52e_pre
1674    
1675    o fix bug in impldiff when Nr=1 or Nr=2.
1676    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1677    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1678    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1679      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1680    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1681    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1682    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1683    
1684    checkpoint52d_post
1685    o re-tiled many expts to allow comparison in multi-processor mode
1686      - updated output accordingly
1687      - changed hs94.128x64x5 to use intial T from file rather than use the
1688        random number generator
1689    o add infrastructure in model routines for fizhi and gridalt packages
1690    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1691    o changes to permit hi-res, cubed-sphere, configuration
1692      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1693      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1694      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1695        of surface winds for the cube
1696      (A verification experiment, based on global_ocean.cs32x15, but with
1697       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1698       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1699       complete with example surface forcing files and matlab scripts to look
1700       at the output and compare it with that of global_ocean.cs32x15.)
1701    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1702       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1703       to conform to the common rule.
1704    o check-in the first version of the coupler + interfaces for multi-components
1705       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1706       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1707       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1708       - ocean and atmos. share the same horizontal grid (no interpolation).
1709       - exchanges between component and coupler is done in forward_step
1710    o new verification experiment, cpl_aim+ocn:
1711       coupled ocean - AIM atmosphere on cs32 grid.
1712    
1713    checkpoint52d_pre
1714    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1715    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1716    
1717    checkpoint52c_post
1718    o Fixing OPTIONS files for use of exf:
1719      - ALLOW_ECCO not needed
1720      - ECCO_CPPOPTIONS.h should not be included from
1721        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1722        as has been the case in the past
1723      - All cal/exf related options are currently set in
1724        single header file. Should remain so until we
1725        agree on a consistent new policy.
1726    o Removed all CPP options for cal package.
1727      cal has no more CPP options.
1728    o modified STOREs in GAD_ADVECTION
1729    o corrected key comp. for passkey
1730    
1731    checkpoint52b_post
1732    o new version: "thsice" of thermodynamic sea-ice pkg:
1733     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1734     - modify fluxes but do not change theta directly;
1735     - light cleaning of bulk_force pkg (still needed with thsice).
1736     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1737       + output_thsice.txt to test thsice & bulk_force pkgs.
1738    o put back grid & coriolis monitor output.
1739    checkpoint52b_pre
1740    
1741    o call "do_the_model_io" at the beginning (=> dump initial state)
1742    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1743    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1744      (need info on NUMBER_OF_PTRACERS)
1745    o missing PTRACERS headers in some routines
1746    o default tamc.h in pkg/autodiff supposed to crash
1747      to ensure proper customization
1748    
1749    checkpoint52a_post
1750    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1751      - moved surfaceTendencyTice from pkg/seaice to main code
1752      - subroutine FREEZE_SURFACE now limits only surface temperature
1753        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1754        => new output.txt for global_ocean.cs32x15 & global_with_exf
1755      - keep the old version of FREEZE for backward compatibility;
1756        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1757      - corresponding modifs for TAF directives
1758    o added surface flux output variables to TIMEAVE_STATVARS
1759    o time-averaged output for pkg/ptracers
1760    o fix problem with ECCO-related divided adjoint
1761      snapshot file was missing some ad-variables,
1762      but no warning issued by TAF
1763    
1764    checkpoint52a_pre
1765    o some bug fixes for #undef REAL4_IS_SLOW
1766    
1767    checkpoint52 = ecco_c52_e35
1768    o after testing adjoints of checkpoint51u_post
1769    
1770    checkpoint51u_post
1771    o this is the post-merge tag of the ecco-branch
1772      (needs another clean checkout and re-testing)
1773    o various natl_box_adjoint configs and results
1774      but no input fields
1775    o obcs adjoint not yet merged!
1776    o adding ECCO global 1x1 and 2x2 degree configs
1777    o updated/extended some store directives for seaice
1778    o pkg/ecco now containes ecco-specific part of cost function
1779    o top level routines the_main_loop, forward_step
1780      supersede those in model/src/
1781      previous input data.cost now in data.ecco
1782      (new namelist ecco_cost_nml)
1783    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1784    
1785    checkpoint51t_post
1786    o this is the pre-merge tag of the ecco-branch
1787    
1788    checkpoint51s_post
1789    o cleanup: removed various obsolete #define-s
1790    o pkg/grdchk
1791      - renamed 'ph-grd 3' to 'grad-res'
1792      - merged from ecco-branch
1793        (remaining bug fixes for obcs gradient checks)
1794      - additional high-precision output for testreport
1795        (grep for 'precision_grdchk_result')
1796    
1797    checkpoint51r_post
1798    o cleaned up or removed CPP_OPTIONS.h files
1799    o updated results for some of the tests to reflect the new
1800      optfiles (-ieee: -O0 instead of -O3)
1801    
1802    checkpoint51q_post
1803    o cd_code:
1804      - moved cd_scheme.F -> cd_code_scheme.F
1805      - separate read_checkpoint from cd_code_ini_vars.F
1806      - separated cd_code part from write_checkpoint
1807      - updated AD_SOURCE, generated .flow
1808      - added CD_CODE_VARS.h to the_main_loop
1809      - Moving cd_code specific store dir.s to pkg/cd_code
1810    o ctrl package totally restructured
1811      - pack/unpack now optional and decoupled from
1812        xx_/adxx_ I/O
1813      - ctrl_pack/unpack cleaned
1814        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1815      - confined inclusion of AD_CONFIG.h to where necessary.
1816    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1817    
1818    checkpoint51p_post
1819    o create initial cd_code package
1820      - WARNING: the initialization of fields within packages
1821        is broken because INI_FIELDS (where READ_CHECKPOINT is
1822        called) is called *before* PACKAGES_INIT_VARIABLES.
1823        This seems to be backwards since
1824        1) its important to initially zero the entire field including
1825           the "halo" region
1826        2) zeroing needs to be done *before* reading pickup info
1827           and the pickup call might or might not happen in any
1828           particular run
1829      - this needs an overhaul for R2
1830    o cleanup verification/*/code/GMREDI_OPTIONS.h
1831    o cleanup testreport
1832    
1833    checkpoint51o_post
1834    o bringing AD-related verif's up to date with genmake2
1835      - carbon/
1836      - global_ocean.90x40x15/
1837      - hs.94.1x64x5/
1838      - (front_relax/ )
1839    o (more) consistent directory structure for AD-related verif.'s
1840    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1841    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1842    o bug fix in find_alpha.F for MDJWF:
1843      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1844        change rho -> rho-rhoConst
1845      - replace call find_rho to find_rhonum
1846    o initialisation of rFlx extended to full array (required by TAF)
1847      and shifted to thermodynamics
1848    o removed PTRACERS.h in ptracers routine
1849    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1850    o Correcting initialisations for fVerU, fVerV.
1851    o helping TAF to recognize dependency on kUp for
1852      fVerU, fVerV
1853    o Replacing delZ by delR in pkg/ctrl/
1854    checkpoint51o_pre
1855    
1856    o undid all of cp51 pending some cleanups and discussion
1857    o added the [#include "AD_CONFIG.h"] statement to all files that need
1858       it for adjoint/tl #defines
1859     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1860     o removed tools/genmake since it no longer works
1861    
1862    checkpoint51n_post
1863    o modifications to make FREEZE flux visible to pkg/kpp
1864      - moved surfaceTendencyTice from pkg/seaice to main code
1865      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1866      - subroutine FREEZE now limits only surface temperature
1867        (this means new output.txt for global_ocean.90x40x15,
1868         global_ocean.cs32x15, and global_with_exf)
1869    o added surface flux output variables to TIMEAVE_STATVARS
1870    
1871    checkpoint51n_pre
1872    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1873    o added [#include "AD_CONFIG.h"] to all files that use the following
1874      defines:
1875      - ALLOW_ADJOINT_RUN
1876      - ALLOW_TANGENTLINEAR_RUN
1877      - ALLOW_ECCO_OPTIMIZATION
1878    
1879    checkpoint51m_post
1880    o incorporating changes to get TAMC/TAF working in genmake2
1881      - added new TAMC/TAF targets to the Makefile
1882      - various cleanups related to package handling
1883      - these changes should have no impact on the forward model
1884    
1885    checkpoint51l_post
1886    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1887     - faster algorithm for cal_addtime.F
1888     - higher precision arithmetic, where needed
1889     - pkg/exf *startdate variables changed from calendar date to
1890       model integration time
1891    
1892    checkpoint51l_pre
1893    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1894    o enable to apply restoring on S & T only in a latitude band.
1895    o update output (external_forcing_surf modif. change truncation errors)
1896       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1897    
1898    checkpoint51k_post
1899    o change default to: useNHMTerms=.FALSE.
1900     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1901       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1902     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1903        exp1, ideal_2D_oce
1904     - change data file of oceanic exp (leave the results unchanged for now)
1905       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1906    o set gravitySign automatically according to the vertical coordinate used
1907      (and change sign: back to "logical" value: +1 when R increases downward)
1908    o added an include barrier to the default CPP_OPTIONS.h and
1909      removed the #include "PACKAGES_CONFIG.h" from it
1910    o fix a bug in mom_fluxform (from chk51j_post)
1911    
1912    checkpoint51j_post
1913    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1914    o adjusted some flow directives (dynamics, thermodynamics)
1915    o added cubed-sphere case to test cost function
1916    o heckpoint_lev?_directives.h now include
1917      pkg-specific directives, whenever those are enabled.
1918    o Moving pkg-specific flow directives to corresponding pkg
1919      Moving pkg-specific differentiation list to corresponding pkg
1920      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1921      ---> conventions are
1922           - pkg_ad.flow
1923           - pkg_ad_diff.list
1924           - pkg_ad_check_lev?_dir.h
1925    
1926    checkpoint51i_post
1927    o merge of the branch-genmake2
1928      - knowingly breaks the older genmake
1929      - automatic generation of all ALLOW_${PKG_NAME} defines
1930      - new testreport supersedes older testscript
1931    o large number of package inclusion and header cleanups
1932    checkpoint51i_pre
1933    
1934    o new output for adjoin of global ocean vector invariant
1935    o fix for checkpoint of thermodynamic seaice and bulk_force
1936    o Steph gchem various cleanups
1937    
1938    checkpoint 51h_pre
1939    o fixed some single quotes
1940    o modify gchem pkg to be more versatile
1941    o modifications to clean up dic pkg
1942    o add pkg/cfc
1943    
1944    checkpoint51g_post
1945    o provide links for ARPACK and ADM*TLM
1946    o start removing verification/vero/
1947    o update AD-related stuff
1948      (in particular some IF-statements in model/src/ routines)
1949    o adding to verification/global_ocean.90x40x15/ adjoint of
1950      vector invariant setup
1951    
1952    checkpoint51f_post
1953    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1954    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1955      of tracer Green's fucntions for ocean inversion project.
1956    
1957    checkpoint51f_pre
1958    o Added on-the-fly spatial interpolation capability
1959        "USE_EXF_INTERPOLATION" to pkg/exf.
1960      - This is a temporary Cartesian-grid hack until
1961        the super-duper ESMF coupler becomes available.
1962      - See verification/global_with_exf/README for usage example.
1963      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1964        flags and modified pkg/seaice accordingly.
1965    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1966        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1967        non-local transport term.
1968    
1969    checkpoint51e_post
1970    o pkg/mom_vecinv:
1971      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1972      - add time-ave diagnostic of vorticity advection.
1973    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1974    o atmospheric geopotential: - include water vapor effect;
1975                                - use p^kappa in p* scaling.
1976    o land pkg: read initial state from files.
1977    o AIM : add stratospheric drag in the upper level
1978    
1979    checkpoint51d_post
1980    o change function ILNBLNK (=> last non-blank char.) to return zero
1981      (instead of the string length) when the string. char is empty
1982    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1983    o modif's to restore TAMC compatibility
1984      - avoid "_d" constructs in PARAMETER declarations
1985      - avoid interrupting lines by comment lines
1986    o Use cluster local disks for purely local I/O
1987      vs. globally visible disks needed for ctrl stuff
1988      (merged from ecco-branch)
1989      - new active_file_loc... and mdsio_..._loc routines
1990      - affected packages: autodiff, ctrl, grdchk, mdsio
1991    
1992    checkpoint51c_post
1993    o introducing integer flag debugLevel
1994      - debLevZero: suppress all output
1995      - debLevA: standard
1996      - debLevB: equivalent to current debugMode=.TRUE.
1997    o introducing pathname variable mdsioLocalDir for mdsio
1998      that can be specified at runtime
1999      (relevant for cluster I/O to local disk)
2000    `
2001    >>>checkpoint51b_post
2002    adjoint of ptracers
2003    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2004    o extended state in checkpoint_lev?, etc.
2005    o alternative ctrl/cost with tr1 or ptracer
2006    o new comlev1_bibj_ptracers
2007    o new ptracers.flow
2008    o made ptracers_forcing same as external_forcing_s
2009    o added verification for adjoint with ptracers
2010      - adm. grdchk fail so far
2011      - tlm. grdchk OK
2012      - checked tapelev/comlev recomputations: OK
2013    <<<checkpoint51b_pre
2014    
2015    checkpoint51a_post
2016    o added code for biogeochemistry package
2017      - new pkgs: dic, gchem
2018      - new subroutine in ptracers
2019    o modify code for biogeo packages
2020      - in model/src and pkg/ptracers
2021    
2022    checkpoint51
2023    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2024      - autodiff, ctrl, exf, grdchk, seaice
2025      kept separate packages
2026      - cost, ecco, obcs
2027    o updating verification/internal_wave, verification/lab_sea
2028      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2029    
2030    checkpoint50i_post
2031    o Preparing next differentiable checkpoint and sync
2032      of MAIN vs. ecco-branch
2033      - 1st step: this one is differentiable
2034      - 2nd step: next(! not this) checkpoint will have updated packages
2035                  from ecco-branch)
2036    
2037    checkpoint50h_post
2038    o new package "land": provide surface BC for AIM.
2039    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2040    o AIM: use true log-P extrapolation for near surface temp (= as in
2041        F.Molteni paper) ; update aim.5l_cs output.
2042    o New variable in PARM03 for more flexible pickups
2043    o somewhat cleaned package initialisation sequence for
2044      ctrl/ cost/ ecco/ in packages_... routines
2045    
2046    checkpoint50g_post
2047    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2048      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2049      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2050        made the default because of faster convergence than ADI
2051    
2052    checkpoint50f_post
2053    o exf totally restructured
2054      - replaced all exf_set_ routines by one generic exf_set_gen.F
2055        and made sure it's still differentiable
2056      - split exf_getffields.F into new exf_bulkformulae.F
2057      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2058      - updated adjoint/makefile and relevant verif. accordingly
2059    
2060    checkpoint50f_pre
2061     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2062          + change Evap over land. (update aim.5l_cs output)
2063     o added missing .cvsignores and made uniform across expts
2064     o changed configuration of tidal_basin_2d expt
2065     o added pkg/debug functions for tracing code in fatal crashes
2066     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2067     o new fn in pkg/monitor to stop model if solution grows too big
2068     o removed lots of single quotes from comments
2069    
2070    checkpoint50e_post
2071    o make KPP work with PTRACERS
2072     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2073       nearly a copy of kpp_transport_s
2074     - there is no analogue to SurfaceTendencyS, so I have to use
2075       gPtr(of the surface layer) instead
2076    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2077    checkpoint50e_pre
2078    
2079    checkpoint50d_post
2080    o change kpp output from multiple-record state files to single-record state
2081      files analogous to write_state.F
2082    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2083      analogous to the cg2d-related output.
2084    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2085      so that writing to internal file fn (with length 512) fails.
2086    checkpoint50d_pre
2087    
2088    checkpoint50c_post
2089    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2090    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2091    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2092    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2093    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2094    
2095    checkpoint50c_pre
2096    Merging from release1_p13:
2097    o bug fix for pkg/seaice dynamic solver
2098    o Added SEAICE_initialHEFF to pkg/seaice
2099    
2100    checkpoint50b_post
2101    o store u*,v* in gU,V instead of in guNm1,gvNm1
2102    o in order to put the momForcing out of the Adams-Bashforth:
2103      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2104      to timestep.F
2105    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2106    o re-generate output for highly sensitive test-exp:
2107       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2108    
2109    checkpoint50b_pre
2110    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2111    o corrected CPP option mismatch in exf_Bulk... functions for case
2112      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2113    
2114    checkpoint50a_post
2115    o Bug fix for merging between c50 and KPP.
2116      ikey was passed from thermodynamics to kpp_calc via
2117      common block rather than being recomputed in kpp_calc,
2118      in contradiction with new key itdkey.
2119      New key ikppkey created, and tamc.h headers updated.
2120    
2121    checkpoint50
2122    - 2nd step of merge with ecco-branch:
2123      merge changes in ecco-branch back into main trunk
2124    - bug fix in find_alpha
2125    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2126    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2127    - merged some sliced AD support routines
2128    
2129    checkpoint49
2130    merged from ecco-branch:
2131    o exf:
2132      - Enable initialisation of forcing fields to constant
2133        (runtime) values.
2134      - in exf_getffields.F
2135        Reduce i-/j-loop to interior domain, discarding overlaps.
2136        That also fixes wrong TAF-key computations for key_1, key_2
2137        with bulf formulae.
2138      - exf_init.F modify #ifdef for exf_init_evap
2139      - exf_getffieldrec.F, ctrl_getrec.F
2140        The following INT-usages are not safe:
2141          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2142          fldcount = int(fldsecs/fldperiod) + 1
2143        and were modified.
2144    o autodiff: checkpoint_lev...
2145      - updated storing for bulk formulae (some arrays were missing)
2146      - added state for seaice package
2147      - synchronized with main branch
2148    o DIVA:
2149      Modif.s in
2150      - the_main_loop.F
2151      - the_model_main.F
2152      and added cost_final_restore.F cost_final_store.F
2153      o With these changes, it is possible to fully separate
2154        the first forward run to compute the cost function (mdthe_main_loop)
2155        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2156        into separate model executions.
2157        This enables better tuning of DIVA to given queue sizes.
2158      o Loss of cost function value in consecutive DIVA runs is
2159        fixed by storing to 'costfinal' file.
2160      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2161        beginning/end of adjoint integration is accounted for.
2162      The current changes apply to TAF-1.4.26.
2163      TAF has one remaining bug, requiring one manual change
2164      (see MITgcm manual).
2165    o cal: synchronized between MAIN and ecco-branch
2166    
2167    checkpoint48i_post
2168    o Changes to restore differentiability of code w.r.t. previous tag
2169      (mostly adding new routines to make list and replacing
2170      pressure by totPhiHyd).
2171    o Updated and merged grdchk package
2172      - has both ADM and TLM checks
2173      - works for single- and multi-proc.
2174      - output cleaned
2175      - worked successfully for parallel DIVA
2176    o genmake:
2177      - Adding -platform=SP4
2178      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2179    o Modif. for DIVA:
2180      ctrl_unpack should not be called in intermediate DIVA interval.
2181      (similar thing would apply for active files such as
2182      tbar, sbar, psbar, which should not be reinitialised;
2183      only relevant for ecco-branch)
2184    
2185    checkpoint48h_post
2186    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2187    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2188    o Added SEAICE_initialHEFF to pkg/seaice
2189    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2190    
2191    checkpoint48g_post
2192    --- EOS:
2193    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2194      store total Potential in totPhyHyd for diagnostics & EOS.
2195    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2196    --- Pressure/geopotential gradient:
2197    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2198    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2199      ( changes results of global_ocean_pressure )
2200    o NLFS + z-coord.: add eta*Rho' contribution.
2201    o accurate phiHyd when using interface-W at the middle between 2 centers
2202     ( changes results of ideal_2D_oce )
2203    o includes r* 2nd term in potential gradient.
2204    
2205    checkpoint48f_post
2206    Merging from release1_p12:
2207    o Modifications for using pkg/exf with pkg/seaice
2208      - improved description of the various forcing configurations
2209      - added basic radiation bulk formulae to pkg/exf
2210      - units/sign fix for evap computation in exf_getffields.F
2211      - updated verification/global_with_exf/results/output.txt
2212    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2213      (SBO) core products, including oceanic mass, center-of-mass,
2214      angular, and bottom pressure (see pkg/sbo/README.sbo).
2215    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2216      to avoid negative values in shallow regions.
2217      - updated verification/natl_box/results/output.txt
2218      - updated verification/lab_sea/results/output.txt
2219    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2220    o Added useSingleCpuIO option (see PARAMS.h).
2221    o Updated useSingleCpuIO option in mdsio_writefield.F to
2222      work with multi-field files, e.g., for single-file pickup.
2223    o pkg/seaice:
2224      - bug fix in growth.F: QNET for no shortwave case
2225      - added HeffFile for specifying initial sea-ice thickness
2226      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2227    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2228      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2229    o pkg/seaice:
2230      - adjoint-friendly modifications
2231      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2232    
2233    checkpoint48e_post
2234    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2235    o dynamics: change definition of computational domain & adapt mom_fluxform
2236      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2237    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2238        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2239        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2240        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2241        inverted_barometer solid-body.cs-32x32x1
2242      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2243    
2244    checkpoint48d_post
2245    o in preparation for r*:
2246     a) use pre-computed gradient of hydrostatic potential:
2247        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2248     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2249        => affects results of glob_oce_pressure (different truncation error)  
2250      update output.txt of ideal_2D_oce & global_ocean_pressure
2251    
2252    checkpoint48d_pre
2253    o in preparation for r*:
2254      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2255      pass the 2 comp. of the grad. as arguments to momentum S/R.
2256      but for the moment, only used if it does not change the results.
2257    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2258    
2259    checkpoint48c_post
2260    Modifications in treatment of initial flux forcing controls
2261    to avoid extra storing of flux fields.
2262    
2263    checkpoint48c_pre
2264    o Added tidal_basin_2d experiment (currently 1D!)
2265    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2266    
2267    checkpoint48b_post
2268    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2269     (modification to pressure gradient not yet implemented)
2270    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2271      (for U & V) that are used for vertical advection of momentum.
2272    
2273    checkpoint48a_post
2274    o In preparation for r*, use temp. array to compute vertical transport
2275       in flux-form momentum pkg. => change results of few test-exp.
2276      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2277                        lab_sea, natl_box & plume_on_slope
2278    
2279    checkpoint48
2280    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2281    
2282    checkpoint47j_post
2283    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2284    o moved adexch from forward_step to addummy_in_stepping
2285    o added exch in ctrl_map_...
2286    o aveFreq.=0. at end of cost_final to avoid overwrite in
2287      reverse checkpointing loop
2288    o Yet more changes in gmredi:
2289      * adgmredi_calc_tensor
2290        avoiding all recomputation of gmredi_slope_limit
2291      * adgmredi_x/y/rtransport
2292        added flag for excessive storing to avoid recomp. of
2293        u/v/rtans, dTdx/y/z
2294        -> this is not really necessary and very memory-consuming
2295      * adgmredi_slope_psi:
2296        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2297      * gmredi_slope_limit
2298        re-activated full calculation of taperfct for case 'ac02'
2299    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2300    
2301    checkpoint47i_post
2302    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2303    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2304      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2305    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2306    o gmredi: fix few bugs.
2307    
2308    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2309    This will be a good checkpoint to plug into the ecco-branch.
2310    o few modif.'s to get latest version adjointed
2311      (mainly kick out code in ini_linear_phisurf)
2312    o modif's to run adjoint with exactConserv
2313    o case GM_BOLUS_ADVEC should be cleaned
2314      S/R gmredi_slope_psi should be cleaned
2315    o verification/carbon now has exactConserv=.TRUE.
2316    
2317    checkpoint47g_post
2318    o time-average AIM output: becomes independent from statvars time-average
2319      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2320    o After TAF bug fix:
2321      Tested adjoint of gmredi package.
2322      Tests were done with checkpoint47 rather than with latest
2323      checkpoint47f_post since the latter is broken for the adjoint
2324      verification/carbon/ contains both ADM and TLM gradient checks.
2325    Here they are, before they get changed/lost/stolen.
2326    Mostly modif.'s to fix numerical sensitivities.
2327    Gradient checks OK for
2328    - GM_taper_scheme:
2329      * clipping
2330      * ac02
2331      * linear
2332      * glw91
2333      * dm95
2334      * ldd97
2335    - GMREDI_OPTIONS:
2336      * GM_VISBECK_VARIABLE_K
2337      * GM_NON_UNITY_DIAGONAL
2338      * GM_EXTRA_DIAGONAL
2339      * GM_BOLUS_ADVEC
2340    in conjunction with data.gmredi parameters to be checked in
2341    in a few minutes under verification/carbon/code/
2342    
2343    checkpoint47f_post
2344    Merging from release1_p10:
2345    o modifications for using pkg/exf with pkg/seaice
2346      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2347        and SEAICE_EXTERNAL_FLUXES
2348      - pkg/exf CPP options EXF_READ_EVAP and
2349        EXF_NO_BULK_COMPUTATIONS
2350      - usage examples are Experiments 8 and 9 in
2351        verification/lab_sea/README
2352      - verification/lab_sea default experiment now uses
2353        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2354    
2355    checkpoint47e_post
2356    o created a tag prior to creating a branch
2357    
2358    checkpoint47d_post
2359    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2360      at the bottom boundary had an erroneous half slip boundary condition
2361    o added bottom drag and no slip boundary condition capabilities to
2362      oceanic pressure coordinates code
2363    o added new verification experiment global_ocean_pressure, this experiment is
2364      also described in the tutorial section of the manual
2365    checkpoint47d_pre
2366    
2367    checkpoint47c_post
2368    o Added a verification experiment for a global cubed-sphere ocean run
2369      -  verification/global_ocean.cubed32x32x30
2370      -  uses pkg/therm_seaice and pkg/bulk_forcing
2371    
2372    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2373    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2374      when using P-coordinate; only implemented for atmospheric config.
2375    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2376      NOTES: requires option NONLIN_FRSURF to be "#define".
2377    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2378    
2379    checkpoint47b_post
2380    Merging from release1_p9:
2381    o pkg/seaice
2382      - removed GOTO's and added taf directives
2383      - double precision constants to reduce the g77 (Linux)
2384        to F77 (SGI) differences reported in release1_p8
2385    o tools/genmake
2386      - added SGI options
2387    o verification/testscript
2388      - updated to that of checkpoint47a_post
2389    o verification/global_ocean.90x40x15/input/eedata
2390      - modified for SGI f77 compatibility
2391    o verification/lab_sea
2392      - added description of sea-ice model
2393      - added missing matlab routines
2394      - added test of thermodynamics parallelization
2395    
2396    checkpoint47a_post
2397    o new pkg: aim_v23
2398     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2399       for now, keep the same surface forcing as before.
2400     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2401     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2402     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2403    o add diagnostic of surface correction term in monitor output
2404    
2405    o bulk_force and therm_seaice
2406    - Two packages:  bulk_force (Bulk forcing)
2407      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2408    - Earlier integration from Stephaine Dutkiewicz
2409      and Patrick Heimbach.
2410    - Two ifdef statements for compile time,
2411       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2412    
2413    checkpoint47
2414    differentiable version of checkpoint46n_post
2415    o bug fix in quasihydrostaticterms
2416    o * "clean" adjoint code (in terms of extensive recomputations)
2417        can now be obtained for all GMREDI options (i.e. for
2418        - GM_VISBECK_VARIABLE_K
2419        - GM_NON_UNITY_DIAGONAL
2420        - GM_EXTRA_DIAGONAL
2421        - GM_BOLUS_ADVEC )
2422      * However, wrong gradient check problem remains unsolved.
2423      * New CPP options have been introduced for different
2424        tapering schemes
2425    o external_fields_load now part of differentiation list
2426    o pressure needs multiple storing;
2427      would be nice to have store_pressure at beginning or
2428      end of forward_step, e.g. by having phiHyd global (5-dim.)
2429      (NB: pressure is needed for certain cases in find_rho,
2430      which is also invoked through convective_adjustment).
2431    o recomputations in find_rho for cases
2432     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2433    o #define ATMOSPHERIC_LOADING should be differentiable
2434    o ini_forcing shifted to begining of initialise_varia
2435    o Incorporating QNVS line search routines into MITgcm
2436      (this is separate code, and therefore not under pkg)
2437      lsopt/, optim/
2438    o Updated verification/carbon/
2439      - #define GM_VISBECK_VARIABLE_K
2440      - GM_taper_scheme    = 'ldd97'    
2441    
2442    checkpoint46n_post
2443    Merging from release1_p8:
2444    o verification/natl_box:
2445      updating new external_fields_load routine
2446    o New package: pkg/seaice
2447      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2448      The sea-ice code is based on Hibler (1979-1980).
2449      Two sea-ice dynamic solvers, ADI and LSR, are included.
2450      In addition to computing prognostic sea-ice variables and diagnosing
2451      the forcing/external data fields that drive the ocean model,
2452      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2453      The implied surface heat flux is then stored in variable
2454      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2455      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2456      non-local transport term.  Because this call precedes model
2457      thermodynamics, temperature under sea-ice may not be "exactly" at
2458      the freezing point by the time theta is dumped or time-averaged.
2459      N.B.: fairly large differences in accuracy occur across
2460            different platforms/compilers; comparison between
2461            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2462            generated output gives:
2463       T           S           U           V
2464      C D M    c        m  s        m  s        m  s        m  s
2465      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2466      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2467      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2468    
2469      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2470    o GAD:
2471      - generated new common blocks to account for call of
2472        same gad routines with differing traceridentities
2473        (needed to modify tracerIdentity indices in GAD.h)
2474      - generated separate common blocks for case useCubedSphereExchange
2475        (Department of Futurology)
2476      - parameter lists to gmredi_?transport: added tracerIdentity
2477      - added new key indices to tamc.h
2478    o external_fields_load:
2479      - added this routine to TAF list
2480      - needed to make some common blocks global and additional storing
2481        along the same lines as exf package (checkpoint_lev?_directives.h)
2482    o exf:
2483      updated external forcing package
2484      - bug fixes carried over from ecco-branch
2485        (missing OBCS_OPTIONS.h in two routines)
2486      - enable easy to use "no forcing".
2487      - added exf I/O for atmospheric loading
2488      - added exf I/O for runoff data
2489      - transfered scaling between exf <-> MITgcm to exf namelist
2490    o Adding new verification experiment global_with_exf.
2491      This verification experiment is almost identical to the
2492      global_ocean.90x40x15 experiment, except that it uses
2493      the exf (and cal) package instead of the
2494      external_fields_load routine (cf README file).
2495    
2496    checkpoint46m_post
2497    o modified testscript to return -- when there are no lines of "%MON" output
2498    o added new flag "quasiHydrostatic" for QH mode
2499      and new routine quasihydrostaticterms()
2500    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2501      New routine: mom_u_coriolis_nh()
2502    o fixed sign of non-hydrostatic metric terms in u and v equations.
2503      Depend on correct sign of gravitySign.
2504    o added work.pc* to .cvsignore in aim directories using ifc
2505    o introduced flag for controllin non-hydrostatic metric terms
2506    o removed gravitySign from PARM04
2507    o switched to g77/ifc from pgf77 in aim experiments
2508    
2509    checkpoint46l_post
2510    o made convective adjustment work with pressure coordinates:
2511     - changed the direction of k-loop in convective_adjustment.F for the
2512       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2513     - adjusted the reference pressure k-index in convective_adjustment.F
2514     - adjusted the convection condition in convect.F (in analogy to
2515       calc_ivdc.F)
2516     - convective_adjustment no longer computes anything on the halos
2517     - removed the warnings about negative salinity from find_rho.F and
2518       find_alpha.F; instead the new routine look_for_neg_salinity, called
2519       at the beginning of find_rho, find_alpha, and find_beta, does a
2520       check of the entire slice, if CPP-option
2521       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2522    checkpoint46l_pre
2523    
2524    checkpoint46k_post
2525    o fixed the verification/global_ocean.90x40x15 experiment:
2526     - new bathymetry (the world according to A., JMC, and M.)
2527     - new initial fields and forcing fields (*.bin files)
2528     - new POLY3.COEFFS (for the next release one should switch to a full
2529       equation of state: JMD95P or MDJWF)
2530     - fixed several errors and redundancies in the data file
2531     - experiment uses looped cells
2532     - added matlab directory with diagnostic scripts for plotting of output
2533    
2534    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2535     - read AIM physics parameters from a file (data.aimphys)
2536     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2537    
2538    checkpoint46j_post
2539    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2540    o move wVel computation at the end of the time step, in S/R integr_continuity
2541    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2542    o update timeave pkg for wVel diagnostic.
2543    checkpoint46j_pre
2544    
2545    checkpoint46i_post
2546    o Clean up AIM package (and keep the results unchanged):
2547      include CPP_OPTION and use IMPLICT NONE in all routines ;
2548      declare all the variables _RL ; use _d 0 for all numerical constants.
2549      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2550    
2551    checkpoint46h_post
2552    o cleaned up the use of rhoNil and rhoConst.
2553      - rhoNil should only appear in the LINEAR equation of state, everywhere
2554        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2555        and the dynamical equations are all divided by rhoConst
2556    o introduced new parameter rhoConstFresh, a reference density of fresh
2557      water, to remove the fresh water flux's dependence on rhoNil. The default
2558      value is 999.8 kg/m^3
2559    o cleanup up external_forcing.F and external_forcing_surf.F
2560      - can now be used by both OCEANIC and OCEANICP
2561    checkpoint46h_pre
2562    
2563     Added code to convert surface volume flux (fresh water) into
2564     a mass flux when using P coordinates in the ocean (OCEANICP).
2565     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2566    
2567    checkpoint46g_post
2568    o Include a new diagnostic variable phiHydLow for the ocean model
2569      - in z-coordinates, it is the bottom pressure anomaly
2570      - in p-coordinates, it is the sea surface elevation
2571      - in both cases, these variable have global drift, reflecting the mass
2572        drift in z-coordinates and the volume drift in p-coordinates
2573      - included time averaging for phiHydLow, be aware of the drift!
2574    o depth-dependent computation of Bo_surf for pressure coordinates
2575      in the ocean (buoyancyRelation='OCEANICP')
2576      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2577        Theta, Salinity, and Pressure in the parameter list. This routine is
2578        presently contained in find_rho.F. This routine does not give the
2579        correct density for 'POLY3', which would be a z-dependent reference
2580        density.
2581    o cleaned up find_rho
2582      - removed obsolete 'eqn' from the parameter list.
2583    o added two new verification experiments: gop and goz
2584      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2585    checkpoint46g_pre
2586    
2587    checkpoint46f_post
2588    o Enable tangent linear (forward mode) gradient checks:
2589      - extended active file handling to g_... files
2590      - added TANGENT_SIMULATION to theSimulationMode
2591      - extended grdchk package accordingly
2592    o added tangent linear setup in verification/carbon/code_ftl
2593    o added adjoint setup in verification/front_relax/code_ad
2594    
2595    checkpoint46e_post
2596    o Added new equation of state -> MDJWF
2597      - EOS of McDougall et al., 2002, JAOT, submitted
2598      - caveat: the equation of state is only valid for a smaller (more
2599        realistic?) range of values than JMD95P/Z and UNESCO
2600      - added masks to the calculation of pressure in store_pressure
2601      - added more check values for density in check_eos (ini_eos.F), some of
2602        the old check values are out of the range of the MDJWF-eos, so don't
2603        expect perfect matches for those
2604    checkpoint46e_pre
2605    
2606    checkpoint46d_post
2607    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2608      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2609      case of pressure coordinates. eosType='JMD95Z' in
2610      combination with buoyancyRelation='OCEANICP' now causes an error.
2611    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2612      in find_alpha/beta.
2613    checkpoint46d_pre
2614    
2615    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2616      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2617    
2618    checkpoint46c_post
2619    o Changes necessary for ocean in p-coordinates
2620     -  Added new buoyancy relation = 'OCEANICP'
2621     -  Added new parameters = gravitySign (this used to be contained inside
2622        the factor dRdZ which I added when we first switched to R coordinates).
2623     X GM/Redi is not compatible (yet)
2624     X bottom drag and no-slip need to be debugged.
2625    checkpoint46c_pre
2626    
2627    checkpoint46b_post
2628    o Added new equation of state -> JMD95Z and JMD95P
2629      - EOS of Jackett and McDougall, 1995, JAOT
2630      - moved all EOS parameters into EOS.h
2631      - new routines ini_eos.F, store_pressure.F
2632    o Added UNESCO EOS, but not recommended because it requires
2633      in-situ temperature (see JMD95)
2634    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2635      unesco.f to be used with POLY3
2636    checkpoint46b_pre
2637    
2638    checkpoint46a_post
2639    o Added (atmospheric) pressure loading
2640      - new field in FFIELDS.h, etc...
2641      - new cpp flag ATMOSPHERIC_LOADING
2642    o Changed hFacC to _hFacC in calc_phi_hyd.F
2643    o Added SHORTWAVE_HEATING to some files for consistency
2644    checkpoint46a_pre
2645    
2646    checkpoint46
2647    further merges from release1_p5
2648    o new ctrl package
2649      - adopted from ECCO environment to enable optimization
2650      - added Eliassen Palm fluxes to controls
2651    o added Eliassen Palm flux controls to gradient check package
2652    o cost package
2653      - Compatible with new ctrl package
2654      - added Eliassen Palm cost hooks
2655      - modif's of existing cost functions
2656    o Adjoint-related bug fixes in kpp:
2657      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2658      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2659    o autodiff package
2660      - flow directives:
2661        + new for S/R do_the_model_io
2662        + enhanced for S/R checkpoint
2663        + new gmredi.flow
2664      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2665        disable adcommon.h/g_common.h by default.
2666      - fixed problem for adjoint of global_max
2667    o modified verification/carbon/
2668    o New setup for adjoint of global_ocean
2669    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2670    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2671    o incorporated hooks for sponge layer code (external_forcing.F)
2672    
2673    checkpoint45d_post
2674    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2675    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2676      (affects plume_on_slope "cg2d" output)
2677    o add new parameter deltaTfreesurf for free-surface time stepping
2678    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2679    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2680    o change phiMin in exp1 (to agree with documentation)
2681    o add new flags:
2682     - T,S forcing inside/outside Adams-Bashforth
2683     - turn off temp,salt advection and/or forcing
2684     - for each tracer, define internal flag for multiDimAdvection & A-B
2685    o monitor: change definition of KE to check conservation of Energy
2686    
2687    checkpoint45c_post
2688    o Removed f90 comments ("!")
2689    o Modified initialisations to enable exf package for MITgcm
2690      (without invoking ECCO_PACKAGE).
2691    o modifications to gradient check package (Martin Losch)
2692      - enable centered differences
2693      - modified format of standard output
2694    
2695    checkpoint45b_post
2696    o cleaned exchange calls in cg2d
2697    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2698    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2699      to configure barotropic setup (Martin Losch)
2700    o moved some initialisations within bi,bj loop in dynamics
2701      (TAF flow dependency)
2702    o in initialise_varia, moved call packages_init_variables
2703      before convective_adjustment_init
2704      (corresponding adjustment of TAF tape initialisation).
2705    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2706    
2707    checkpoint45a_post
2708    o compute Rho over the whole domain (extend iMin,jMin indices)
2709    o specific exchange for X-slice domain (case Ny=1)
2710    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2711    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2712    
2713    checkpoint44h_post = checkpoint45
2714    o Fix to restore differentiability:
2715      place at which packages_init_variables is called in
2716      initialise_varia is crucial for reverse control flow.
2717    o modifications in GMRedi to enable stable adjoint
2718      (corresponding modif's in thermodynamics, dynamics)
2719    o added missing hook for sponge layer code in external_forcing
2720    o modified test cost functions
2721    o storing in gad_advection (plus removal of write(0,*)!
2722    o missing headers TR1.h added in convective_adjustment routines
2723    o errorMessageUnit set non-equal zero in eeboot
2724      (conflict on some platforms, e.g. IBM SP3)
2725    o modified carbon verif.
2726    
2727    checkpoint44h_pre
2728    o vertical grid option: allow to put the Interface at the middle between
2729      2 cell-centers ; replace delZ in pkg/kpp by drF.
2730    o GM Advective form: Tracers are advected using the residual transport (=
2731      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2732    
2733    checkpoint44g_post
2734    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2735      results) ; ifdef missing in thermodynamics.F
2736    
2737    checkpoint44f_pre,checkpoint44f_post
2738    o added PTRACERS package
2739      This allows an arbitrary number of passive tracers to be integrated
2740      forward simultaneously with the dynamicaly model.
2741      + Implemented so far:
2742        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2743        - I/O and checkpointing
2744        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2745      + Not implemented so far:
2746        - KPP
2747        - OBCS
2748      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2749        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2750        line in data.pkg.
2751      + This package is disabled by default since it increases storage.
2752    
2753    
2754    o testscript: added -cleanup option
2755    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2756                 b) enable to filter 2D fields.
2757    
2758    checkpoint44e_pre,post
2759    o re-wrote convective adjustment to use pre-calculated weights
2760      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2761      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2762      Original calls to convect() still in place.
2763    
2764    chkpt44d_pre,post
2765    o added missing EXCLUDE_MONITOR flags
2766    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2767      (incompatible typ in MIN/MAX expressions caused problems
2768      on IBM SP3)
2769    o in genmake added variable MAKEDEPEND
2770      plus resetting for case SunOS
2771    o added timer_stats.c routine for IBM SP3
2772    o removed variables in dynamics
2773    !!! I forgot to create tag chkpt44d_pre !!!
2774    !!! But chkpt44d_pre = chkpt44c_post    !!!
2775    
2776    o real fresh water flux implemented with non-linear free-surface.
2777    
2778    chkpt44c_pre,post
2779    o few fix (mask in shap_s2, EmPmR in external_field_load,
2780      USE_NATURAL_BCS in solve_for_P);
2781    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2782    
2783    checkpoint44b_pre/_post
2784    o merge of relevant stuff from the ecco-branch:
2785      - genmake: removed $S64 overwrite for case SunOS
2786      - pkg/exf: update and corrections for field swapping and obcs
2787      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2788                  harmonized between ECCO and MITgcm
2789      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2790                      updated checkpointing_lev... lists for obcs
2791      - model/src: minor changes in forward_step, plot_field
2792                   added directive for divided adjoint in the_main_loop
2793      - pkg/mdsio: added mdsio_gl_slice
2794    
2795    o check parameters & config (chkpt44a_pre,post)
2796    o OBC and NonLin_FrSurf.
2797    
2798    checkpoint44
2799    o fix bug in mom_vi_del2uv
2800    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2801    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2802    o update AIM experiments (NCEP input files)
2803    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2804    o added some stuff for AD
2805    
2806    checkpoint43
2807    o added two new advection tests
2808    o added global 4x4 degree ocean test
2809    o added test of H&S94 with free surface on cube
2810    o some final mods for gradient check, adjoint,...
2811    
2812    checkpoint42
2813      Fixed AD-related problems:
2814    o Store directives up-to-date with re-arranged Adams-Bashforth
2815      (mainly thermodynamics.F)
2816    o New store directives for multi-dim. advection schemes
2817      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2818      * new common block and key passkey
2819      (mainly gad_advection.F)
2820    o Modified store directives for split of dynamics/thermodynamics
2821      for the case ALLOW_KPP
2822    o Cleaned argument list for timestep_tracer.F
2823    
2824    checkpoint41
2825    o re-formatted/added comments in prologues of key subroutines
2826      to work with protex
2827    
2828    checkpoint40
2829    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2830    o added FLT (floats) package from Arne along with demo. experiment
2831    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2832      implementation of forward-in-time forcing terms
2833    o more mods for non-linear free-surface including new variable
2834    o modified multi-dim method to work on cube
2835    o bug fix in KPP (from DM)
2836    
2837    checkpoint40pre9
2838    o added DST advection schemes
2839    o fix MPI bug on SGI's
2840    o modifications for non-linear free-surface
2841    o fixed conditionals for fixed flow/passive tracer only mode
2842    o added tension/strain form of stress tensor
2843    o changes to commenting of arguments for TAF/TAMC
2844    o added/updated many matlab scripts
2845    o added multi-dimensional advection method for tracers
2846      
2847    checkpoint40pre8
2848    o new package rw/
2849      Added method for dumping intermediate local arrays:
2850      mdsio_writetile - same as mdsio_writefield except works from inside
2851                        bi,bj loop
2852      mdsio_writelocal - same as mdsio_writetile except works for local
2853                         arrays
2854      write_local_r? - higher-level wrapper for mdsio_writelocal
2855      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2856      Example given at end of mom_vecinv.F that dumps some local arrays.
2857    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2858      control flux-form versus vector invariant code.
2859      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2860      or genmake -DISABLE ...
2861    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2862      (additional storing is now needed for case vecinv;
2863      currently nothing implemented to switch this storing off
2864      in case fluxform is used since no CPP flag available).
2865    
2866    checkpoint40pre7
2867    o bug fix in dynamics.F
2868      calc_viscosity called before k=1,Nr loop.
2869    o added some #ifdef's ALLOW_PASSIVE_TRACER
2870    o cleaned initialisations in ctrl_map_ini
2871      related to TAF
2872    
2873    checkpoint40pre6
2874    o split dynamics into thermodynamics & dynamics
2875    o corresponding split of calc_diffusivity into
2876      calc_diffusivity, calc_viscosity
2877      (kpp_calc_diff, kpp_calc_visc).
2878    o Added diffkr, kapgm to control variables
2879    o bug fix in gmredi_slope_limit for ldd97
2880    
2881    checkpoint40pre5
2882    o proper initialization of Adams-Bashforth time stepping
2883      + uses forward step for very first step of model (iter=0)
2884    o re-generated *all* output since almost all output is modified by this
2885      change (sorry but we've been putting this one off for about 2 years)
2886      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2887        *not* regenerated since they are already out of date and I don't
2888        want to create the impression that they are suddenly working.
2889    o removed KAP stuff for DEC's
2890    o modified/added many .cvsignore files in */code and */input
2891    o added new expt "solid-body.cs-32x32x1"
2892      + this uses an alternative form of ini_curvilinear_grid.F which
2893        is not necessarily any better than the current one...
2894    
2895    checkpoint40pre4
2896    o added re-initialisations of utrans,vtrans,rtrans in
2897      calc_common_factors which are crucial for TAF.
2898    o extended iMin,jMin range for calc_common_factors,
2899      calc_diffusivity
2900    o added option ALLOW_PASSIVE_TRACER
2901    o a few minor updates and fixes
2902    
2903    checkpoint40pre3
2904    o created calc_gtr1.F for gad package
2905    o split the_main_loop and re-introduced forward_step
2906    o some recomputations of nIter0 for TAMC
2907    
2908    checkpoint40pre2
2909    o Updated to latest branch of AJA, JMC
2910    o Added gradient check package
2911    o Added routines for passive tracer handling
2912    o Added carbon sequestration sensitivity experiment
2913    
2914    checkpoint39
2915     o Modifications and fixes to support TAMC
2916       (mainly missing or wrong directives)
2917     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2918       in addummy_in_stepping
2919     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2920     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2921     o Included following packages:
2922       cal: calendar
2923       exf: external forcing
2924       ecco: essential routines to control use of cal, exf
2925             (NB: this is not the full ECCO environment)
2926     o disabled some packages by default in genmake
2927    
2928  checkpoint38  checkpoint38
2929   o see notes_c37_adj.txt   o see notes_c37_adj.txt
2930   o corrected wrong layer index in external_forcing_t   o corrected wrong layer index in external_forcing_t

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