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revision 1.14 by cnh, Tue Sep 29 18:57:53 1998 UTC revision 1.738 by jmc, Thu Oct 26 00:50:48 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 multi-threading and IO:
8      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
9      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
10        (needed to work with SingleCpuIO): tested in all verif. exp.
11    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
12      affects the results (but none of the verification test uses this scheme).
13    o Adding some pkg/diagnostics capability to pkg/seaice
14      (will certainly be subject to changes)
15    
16    checkpoint58q_post
17    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
18      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
19      high_res_cube configuration by 4% on Columbia.
20    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
21      add (in global_with_exf/code) a version of EXF_INTERP_READ without
22      dynamical allocation (seems to work in multi-threaded).
23    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
24      single CPU io) so that TAF does not have to see EESUPPORT.h
25    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
26    
27    checkpoint58p_post
28    o obcs: stop if obcs is used with useCDscheme = .true.
29    o shelfice:
30     - fix a sign error so that no slip at shelfice interface works
31     - remove stop for combination non-hydrostatic code and shelfice. That does
32       not mean, that the results are correct, but at least they are numerically
33       stable
34    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
35    o added adjoint exch routined for all exch*3d* routines
36      and updated flow directives
37    
38    checkpoint58o_post
39    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
40      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
41    o change controling S/R for writing pickup file (new S/R do_write_pickup)
42      and clean-up reading/writing of pickup files.
43    o fix local version of read/write pickup (NH part) in rotating_tank/code
44    o simplify EXCH interface:
45     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
46     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
47    o added the regrid package
48    o shelfice:
49     - add a simple boundary layer scheme to reduce noise
50     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
51    
52    checkpoint58n_post
53    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
54       local variable (not in common block).
55    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
56      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
57      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
58        to work with SingleCpuIO.
59    o add "_d 0" to real constant of pkg/cfc subroutines ;
60       update exp. cfc_exemple & tutorial_cfc_offline output files.
61    o multi-threading and IO:
62      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
63        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
64      - barrier before and after reading.
65      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
66      - avoid using MDS_WRITELOCAL for LAND pkg output.
67      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
68        common-block variables ; Allows multi-threading with master-thread IO.
69    o change default MAX_NO_THREADS from 32 to 4 ;
70      and stop cleanly when MAX_NO_THREADS is too small.
71    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
72    
73    checkpoint58m_post
74    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
75       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
76    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
77       keep global_ocean.90x40x15 (for AD testing) with former secondary test
78       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
79    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
80        add MITgcm_tutorials (= code + all the tutorials)
81    o ecco, option to compute cost for total ssh (mean+anom)
82    o consistent with addition of ptracer and ssh in pkg/profiles
83    o profiles: adding ptracer and ssh
84    o testreport: change multi-test output-file name
85      (from output.txt.{name} to output.{name}.txt)
86    o profiles: now ok for mutli-tiles case
87    o seaice: add 4 parameters for different advection schemes for area,
88      (effective) seaice thickness, enthalphy, and snow height. Their default
89      is the standard parameter SEAICEadvScheme
90    o calc_gw:
91     - add cosFacU in zonal viscous flux (harmonic.visc.).
92     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
93       of tutorial_plume_on_slope.
94    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
95    o calc_gw: true flux-form, account for horizontal grid spacing.
96      update rotating_tank results, but not plume_on_slope (affected at
97      truncation level, 11 digits).
98    
99    checkpoint58l_post
100    o calc_gw:
101     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
102     - remove side-drag for now (need to fix it); update plume_on_slope results.
103     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
104    o commit code to make SST/SSS weights spatially variable
105      (based on either variable in-situ or variable initial T/S weights)
106    o pkg/ecco:
107      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
108        now based on horizontally varying weights wthetaLev, wsaltLev
109      * cost_averagesflags now returns year indices in addition to day, month
110      * sflux balance is performed on annual basis
111        (sflxumm, sfluxmm2, bal_sfluxmm)
112      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
113        including separate counting and multipliers
114    o pkg/rbcs
115      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
116    
117    checkpoint58k_post
118    o testreport:
119     - always build in dir. "build" (if not there, mkdir build instead of building
120       & running in input)
121     - run in dir run (if it exists), in build otherwise.
122     - call prepare_run (if input/prepare_run exists)
123     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
124    o pkg/exf modifications to interpolation and rotation routines for more
125       reasonable treatment of North Pole singularity: for tracers North Pole
126       value is set to northernmost zonal-mean value, for zonal velocity it is
127       set to zero, and for meridional velocity it is set to northernmost value.
128    o pkg/exf/exf_check_range.F
129     - add tile index to diagnostics and move stop statement to the very
130       end of the routine.
131    o pkg/diagnostics: (diagnostics_main_init.F)
132      define title of isomorphic variables according to the current config.
133    o pkg/thsice with pkg/seaice dynamics:
134    - fix domain of computation (interior only, required for exf) and do exchanges
135    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
136    o towards a standard way of dealing with multi-threading in MONITOR
137      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
138    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
139       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
140    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
141    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
142    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
143       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
144    o tracer advection:
145     - clean-up and simplify calc_common_factors.F
146     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
147       advection subroutine (but still not used within DST advection S/R)
148    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
149    
150    checkpoint58j_post
151    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
152      from file (collects calls previously in FORWARD_STEP)
153    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
154    o adjoint store dir. adjusted accordingly
155    o genmake2
156      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
157    
158    checkpoint58i_post
159    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
160      on wind stress (SEAICEstressFactor defaults to 1.)
161    o Total number of Timers is finite (<=40): comment out 2 non-essential one
162      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
163    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
164      on CS-grid: no longer loosing mass.
165    o exf & curvilinear-grid: no longer modify longitude xC & xG.
166    o pkg/ggl90: fix sloppy output and fix a bug
167    o pkg/seaice: added SEAICEuseEVPpickup parameter
168      - Set to false in order to start EVP solver with
169        non-EVP pickup files when using SEAICEuseEVP
170      - fix sign error in diffusion in seaice_calc_rhs
171    
172    checkpoint58h_post
173    * Modifications for bottom topography control
174      o replace hFacC by _hFacC at various places
175      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
176      o add non-self-adjoint cg2d_nsa
177      o update autodiff support routines
178      o re-initialise hfac after ctrl_depth_ini
179      o works for 5x5 box, doesnt work for global_ocean.90x40x15
180    * Adding verification for 5x5 box (4-layer) bottom topography control
181    
182    checkpoint58g_post
183    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
184       used for mean seasonal cycle, mean diurnal cycle); add an example
185       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
186    o pkg/ggl90:
187      - add parameter (minimum surface kinetic energy)
188      - fix bug (avoiding division by zero)
189    o couple pkg/thsice to pkg/seaice:
190      - modify advection in seaice to accomodate new scalar fields to be advected
191      - only muliDimAdection scheme work with seaice/thsice
192      - mapping of thsice-variables to seaice-variables, back and forth
193      - does not break the verification experiments, but does not give the
194        desired results either
195    o pkg/seaice
196      - make (default) second order advection a bit less confusing?
197    
198    checkpoint58f_post
199    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
200      to pkg/seaice):
201      - new routines thsice_map_exf and thsice_get_exf provide the interface
202      - add an additional formal parameter to thsice_solve4temp
203    o pkg/exf:
204      - add new fields wspeed, snowprecip (to be able to couple to thsice)
205      - correct Stefan-Boltzmann constant
206      - new parameter for longwave surface emittance
207      - separate some stuff from exf_bulkformulae into new routines  
208        exf_radiation, exf_wind
209      - add new parameters and constants: longwave emissivity for ocean, ice
210        and snow, evaporation parameters over ice
211      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
212        either wind from stress or stress from wind
213    o pkg/thSIce:
214    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
215    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
216       and THSICE_CALC_THICKN
217    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
218    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
219      to make debugging easier.
220    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
221    o pkg/bulk_force:
222      - clean-up comments and parameters ;
223      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
224    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
225      generate new output for test-experiment: aim.5l_cs.thSI
226    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
227      testreport accordingly
228    
229    checkpoint58e_post
230    o SEAICE_CGRID adjoint done
231    o R_STAR adjoint implemented.
232      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
233      * need to sort out init. of h0facc, etc.
234    o Make pkg/profile fully independent of ecco,cost, etc. stuff
235      to be able to use it in pure forward.
236    
237    checkpoint58d_post
238    o upgrade simple test-experiment to tutorial example:
239     step.1: duplicate the experiment and (step.2) will remove the old copy.
240      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
241      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
242      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
243      tutorial_global_oce_biogeo    <- copy of dic_example
244      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
245      tutorial_plume_on_slope       <- copy of plume_on_slope
246      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
247      tutorial_global_oce_optim     <- empty for now (David ?)
248      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
249     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
250    o correct a sign problem in cost_scat.F
251    o obcs and ptracers: fix boundary conditions for advections schemes
252      with larger stencil
253    o thsice adjoint: start
254    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
255      completeness
256    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
257      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
258    o ptracers adjoint:
259      * avoid extensive recomputatations
260      * fix missing re-init. of gptr (missed by TAF)
261    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
262      me to turn off the excessive output to STDOUT that this package produces
263    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
264      and add those terms in Vector-Invariant formulation.
265    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
266      if the control period (xx_hfluxperiod etc) is 0
267    o in profiles pkg, clean routines and fix details
268    o in ecco pkg, reading ssh data:
269      fix problem in case the model does not start at iter0=0
270    o fix mnc-pickup/restart for ptracers
271    o new package prifiles:
272      code to compute profile-based cost by Gael Forget
273      (modifs in ecco, ctrl, autodiff)
274    o Benign bug fix in initialization (spotted by M. Mazloff) of
275      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
276    
277    checkpoint58c_post
278    o adjoint: finish NLFS adjoint and provide reference output in
279      verification/global_ocean.90x40x15/results_ad_nlfs
280    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
281      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
282      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
283      with SEAICE_CGRID defined.
284    o move calendarDumps from "data" to "data.cal" and clean-up the code
285      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
286    o add useEXF & useCAL flags (for now, set in hard-coded way)
287    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
288      (were missing in NH mode, and wrong in quasihydrostatic mode).
289      waiting for Chris updated version of calc_gw to add those CALLs.
290    o fix bug in quasihydrostatic S/R ;
291      add a test for this option: global_ocean.90x40x15.qshyd
292    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
293      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
294    o add on/off flag useOffLine for package OFFLINE
295    o seaice:
296      - modify advection so that it works also on the C-grid
297      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
298        problem in multi-tile runs with C-grid
299      - add flags for clipping ice velocities and/or masking solver forcing
300      - fix drag (ocean on ice) formulation and a bug that caused noise in the
301        C-grid solver
302      - added a few comments to seaice_diffusion.F
303      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
304        are now exclusive)
305      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
306        required re-ordering the code a little:
307       + make DAIRN global variable (defined in SEAICE)
308       + move computation of the viscosities eta and zeta into a new separate
309         routine (because I need to recompute them in seaice_ocean_stress.F)
310    
311    checkpoint58b_post
312    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
313      update output.txt of exp. aim.5l_cs.thSI
314    o various mnc cleanups and improvements:
315      + shrink lookup tables by factor of ~4
316      + better error reporting when running out of lookup space
317      + able to handle longer path/file names (up to 500 chars)
318    o adjoint:
319      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
320      - TBD: "hidden" mom_vecinv recomp. in dynamics
321    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
322     (allow to differentiate between forcing components using new integer flags:
323      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
324     and add new flag to put Dissipation tendency out of Adams-Bashforth.
325    o ecco
326      - enable trend removal from SSH anomaly obs.
327    o adjoint
328      - a fix for PmEpR when #undef EXACT_CONSERV
329      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
330      - try to fix "hidden" recomp. in forward_step for NLFS
331        (NLFS seems broken sometimes after I checked it in)
332    o seaice:
333     - add c-grid version of the dynamic solver:
334       + three new routines that are the c-grid substitute lsr, dynsolver
335         and ostres
336       + put a few fields that were local to dynsolver into global common
337         blocks, so that I can move the computation of stresses etc into
338         seaice_lsr (saves coding but may break the adjoint).
339     - replace more hardwired parameters by runtime parameters
340     - add ice masks that mask the rhs of the implicit solvers where there
341       is no ice (commented out in seaice_dynsolver, because i am not sure
342       if this works properly), eventually this should replace the clipping
343       of ice velocities in seaice_dynsolver to +/-40cm/s.
344    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
345      include it only where its needed
346    o move balancing of fluxes before the call of external_forcing_surf
347    o seaice:
348      - correct units of turning angles (now they are really in degrees)
349      - move computation of GWATX/Y out of main routine into dynsolver
350      - initialize GWATX/Y in seaice_init
351    o Apply mask on Fresh-Water flux (needed for SSH forcing).
352      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
353    o seaice: add runtime flags for turning angles (default to zero)
354    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
355      and trend from exf forcing and ctrl control adjustments
356    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
357      (since checkpoint57x_post)
358    o change the default rotation period to 86164.s = the Earth rotation
359    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
360      and based on a reference stratification. Tested within hs94.cs-32x32x5.
361    o seaice advection: add code for choosing between the default (2nd order
362      central differences) and multiDim advection schemes provided by
363      pkg/generic_advdiff
364    o seaice:
365      - removed all references to SEAICE_GRID.h fields from
366        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
367        (cubed-sphere configuration will change a little)
368      - grid computations in seaice_init are obsolete now.
369      - cleaned up code a little so that is easier to read (hopefully).
370      - added new (better?) discretizations of default advection and diffusion
371        (turn on with SEAICEuseFluxForm)
372      - replace 1 in 3d global fields by kSurface in growth.F
373      
374    checkpoint58a_post
375    o seaice:
376      - bug fix in advect.F
377    o shelfice:
378      - separate shelfice load anomaly from pload (breaks with time
379        dependent forcing), => introduce constant field shelficeLoadAnomaly.
380        Its default is 0., but it may be computed more cleverly from (unknown)
381        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
382        done offline. A good approximation of the pressure load anomaly is
383        necessary to avoid large initial adjustment processes underneath
384        deep-reaching shelfice.
385      - small fix in ISOMIP shelfice_thermodynamics
386      - add more sophisticated thermodynamics of Hellmer (1989), this is
387        now the default
388      - give a few constants more intuitive names
389    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
390      if bulk formulae are used in long integration (especially EmPmR). Turn
391      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
392      if balancePrintMean, the imbalance that is substracted is printed to
393      STDOUT.
394    o fix bug (typo) in obcs_apply_eta.F
395    o add a new package shelfice which enables us to model the circulation
396      underneath shelf-ice with draughts of hundreds of meters.
397     - works
398     - to do: + include improved thermodynamics
399              + check whether kSurfC (from model/inc/SURFACE.h) can be used
400                instead of new field kTopC
401              + can we use topoFile, Ro_surf and existing code in ini_depth.F
402                instead of new field R_shelfIce and new code in ini_depth.F
403                and ini_mask_etc.F?
404              + adjust vertical mixing schemes?
405    o seaice pkg:
406     - add a cpp-flag to include a simple formula for a salinity dependent
407       freezing point of sea water at the surface
408     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
409       meridional stresses are now different (and hopefully correct)
410    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
411       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
412       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
413    o pkg/diagnostics: add options and parameters for regional-statistics
414       diagnostics ; define regions by reading a region-mask from a file
415       (might add other options later)
416    o pkg/bulk_force:
417     - add option and parameters to use AIM surface-flux formulae.
418     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
419       others forcing fields (defined in PARM05, parameter file "data") are loaded
420       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
421     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
422     - use the right EXCH call for uwind,vwind (to work on CS-grid).
423     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
424       and parameters (note: calcWindStress replaces .NOT.readwindstress).
425     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
426    
427    checkpoint58
428    o add "--embed-source" option to genmake2 which, when the supporting
429      tools can be compiled (as determined by genmake2) will turn on the
430      embed_files package which then embeds the entire MITgcm source code
431      (*.[fFhc] + Makefile) used for the build within the executable
432      - requested by CNH but off by default
433      - adds a paltry <9MB to the mitgcmuv executable in most cases
434      - only writes the output when useEMBEDSRC in eedata is true
435    o clean up 3-dim. relaxation codes:
436      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
437      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
438      * Thanks to Tom Haine for testing!
439    
440    checkpoint57z_post
441    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
442      affects output (@ truncation level) of exp. plume_on_slope ; updated.
443    o fix the pickup behavior for obcs in combination with ptracers
444    o fix a bug in ptracers_external_fields_load
445    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
446      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
447    o transfered surface NH pressure to eta field (if exactConserv).
448    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
449         and update lab_sea output.txt file.
450    o completing 3-dim. relaxation code: additional term
451         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
452      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
453      * At compile time, in "EXF_OPTIONS.h" set
454          #define  ALLOW_CLIMTEMP_RELAXATION
455          #define  ALLOW_CLIMSALT_RELAXATION
456      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
457          tauThetaClimRelax3Dim = 15552000.0,
458          tauSaltClimRelax3Dim  = 15552000.0,
459      * 3 cases:
460          1) Use a constant-in-time 3-dim. field
461          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
462          3) Real-time relax. to time-evolving prescribed field
463    o Adding Laplacian-type smoothness constraint on
464      initial and boundary (forcing) controls (ic, bc)
465      * enable at compile-time via
466        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
467      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
468      * Absolute scale somewhat unclear so far
469      * no area weighting was included since no other cost term does so far
470    
471    checkpoint57y_post
472    First step for a NLFS adjoint
473    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
474    o new init. routines for calc_r_star, calc_surf_dr
475    o still need to deal with ini_masks_etc
476    o testreport seemed happy
477    checkpoint57y_pre
478    
479    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
480    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
481    o add new offset feature to offline pkg (plus minor cleanup)
482    o cfc fixes for final year of integration
483    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
484      be in GCHEM_OPTIONS).
485    
486    checkpoint57x_post
487    o fix testreport Pb in multiple test experiment.
488    o cleanup our namelist syntax in verification:
489      - make it more F95 standards compliant (some work still needed)
490      - allows the vast majority of our tests to work with gfortran
491    o Non-Hydrostatic:
492     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
493     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
494    o Allow to apply AB on T,S rather than on AB(gT,gS):
495     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
496     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
497       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
498     - need a "clever" read_pickup to restart from the other AB formulation
499    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
500    o remove some unused variables (reduces number of compiler warnings)
501    o adjoint
502      * Disable useVariableViscosity for adjoint for time being
503        (there are a number of extensive recomputations)
504      * Initialize certain variables needed for adjoint
505    
506    checkpoint57w_post
507    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
508                 fix the singleCpuIO RS version of MDSWRITEFIELD
509       and add a WARNING if using globalFiles=T with multi-processors.
510    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
511      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
512    o tracer advection scheme:
513      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
514       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
515       was not very convenient).
516      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
517       (further tests needed for the implicit DST & Flux-Limiter schemes).
518    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
519      and sRef for convenience, handy, when you want to initialize
520      ptracers in a large domain with a constant non-zero value. Also,
521      untangle ptracers_init.F a little.
522    
523    checkpoint57v_post
524    o change dome exp. to use variable viscosity in side-drag terms.
525    o remove all the files from the cfc_offline test since they are now
526      incorporated into tutorial_cfc_offline which has been producing
527      identical results for a few days of testing
528    o add new parameter: sideDragFactor to enable half-slip-side BC
529      and change side-drag S/R to use viscosity from mom_calc_visc
530      (can switch back by setting sideDragFactor=0.); affects results at
531      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
532       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
533    o vorticity & strain are now computed without masking, to account for
534      no-slip-side BC in variable viscosity calculation ; mask is applied
535      anyway later on, before computing advection/coriolis terms.
536    o modify exp4 to test new obcs support for reading from external files
537      and for passive tracers
538    o fix behavior of ptracers_monitor when monitor output is written to a
539      netcdf-file; still not independent of monitor.F (writes in the same
540      file).
541    o change default value of tRef (put a uniform, meaningful value for ocean
542      & atmos) and initialize sRef (was missing, as Martin mentioned).
543    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
544      to be proportional to enstrophy dissipation length.  Thus,
545       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
546      This is now consistent with Smagorinsky and with the manual.
547    
548    checkpoint57u_post
549    o OBCS and PTRACERS: add open boundary support for passive tracers
550      - either use homogenous (pseudo) v.Neumann conditions or prescribe
551        OB-values from file; this is not different from the way theta and salinity
552        are treated
553      - however, Orlanski-radiation conditions are not supported, and the model
554        will stop if you use pTracers and Orlanski at the same time.
555      - beefed up the rountine obcs_external_fields_load: now only those open
556        boundary values are overwritten with values from files for which there
557        are really files, otherwise the OB-fields remain untouched. This makes
558        it possible to use different OBs at different ends of the domain (as
559        with EXF)
560    o reduce number of exch calls in shap_filt (s2).
561    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
562      truncation level) 4/5 MLAdjust test results (11&12 digits match).
563    
564    checkpoint57t_post
565    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
566    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
567      same truncation, independent of the face number: affects affects several
568      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
569    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
570      note that biharmonic viscosity + no-slip was not tested in any experiment.
571    o fix bug in non-linear free-surf side-drag ; generate new output for
572      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
573    o make mnc honor the writeBinaryPrec flag for most kinds of output
574    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
575    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
576      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
577    o add brackets in multi-terms sum to get same truncation, independent of
578      the face number (manage to get exactly same value of gU,gV at the cs-edge)
579      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
580    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
581      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
582      a maximum grid-scale Reynolds number.  Also, changes all length calculations
583      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
584      Suggested values of viscosity parameters found in mom_calc_visc.
585      Many new viscosity diagnostics available.
586    
587    checkpoint57s_post
588    o Add clearing-house for viscosity calculations, mom_calc_visc and
589      correct numerous bugs in LeithD and Smagorinsky discretizations.  
590      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
591      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
592      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
593      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
594      The Strain-Tension form is now called with useStrainTensonVisc=.true.
595      ViscAhStrain and viscAhTension are now retired.
596    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
597    o In response to JMC's bug report, genmake2 now ignores any soft-links
598      that it finds in the *current* directory when searching for files.
599      Soft-links found in any other source directories will still work as
600      they did before.
601    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
602      a C routine to unlimit the stack size
603    o mnc-ify pkg/aim snapshot vars
604    o mnc-ify pkg/land as requested by Daniel
605    o various changes to mnc including:
606      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
607      - output can now be grouped so that all files within a group
608          change the ITER portion of their names in lock-step together
609      - can now read ("global") PER-FACE (in addition to PER-TILE) files
610          and works with both EXCH1 and EXCH2 (but needs more testing)
611      - writing works for all verification test cases w/ g77 on Linux
612    
613    checkpoint57r_post
614    o make MNC variable initialization happen earlier
615    o add diagnostics for (almost) each term of the momentum Eq.
616    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
617    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
618    o remove MINIMAL_TAVE_OUTPUT option ;
619      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
620    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
621      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
622    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
623    o add time-dependent SST, SSS control
624    o cost terms in ecco/ modularized (new cost_generic.F)
625    o cost_averages routines are modularized (new cost_averagesgeneric.F)
626    o new infrastructure for seaice model vs. obs misfits in seaice/
627      * driver from the_main_loop.F is seaice_cost_driver.F
628      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
629      * gradient check in Exp. 6a of natl_box_adjoint/
630    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
631      (see README file)
632    
633    checkpoint57q_post
634    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
635    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
636      - bug was reported by Jean-Michel and Ian Fenty
637    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
638      update exp. cpl_aim+ocn output.
639    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
640      Needed for high-res. runs with large global files
641      to be able to limit tapelev size
642    o Changed some tests for adjoint:
643      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
644      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
645      * global_ocean.90x40x15/ back to default 3-level checkpointing
646    o Modifications to enable scripted COMMON to MODULE conversion
647      * verification/OpenAD/code/ has necessary scripts and description;
648      * converts, compiles and runs successfully;
649    
650    checkpoint57p_post
651    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
652    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
653      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
654    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
655    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
656      (was already the case for dissipation with mom_vecinv,
657       and also the case for grad.PhiHyd when staggered-timeStep)
658      This will allow to put dissipation out-off the AB time-stepping.
659     Unfortunately, affects truncation error. Update output of exp. that "fails"
660      (cg2d matching number) and leave the others for later: front_relax(10),
661      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
662      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
663    
664    checkpoint57o_post
665    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
666      (2) its ready to be documented during the 20050801 DocFest
667    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
668      for ideal_2D_oce and lab_sea on linux_ia32_g77
669    o set to #undef CTRL_SET_OLD_MAXCVARS_30
670      in global1x1_tot/code_seaice_adj to access indices 32, 33
671      (worth another tag)
672    
673    checkpoint57n_post
674    o adding precip control xx_precip 32
675    o adding swflux control xx_swflux 33
676    o Replacing 10 forcing penalty cost routines by 1 generic.
677    o Implementing partitioning in time-mean and variable adjustment
678      for atmos. state.
679    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
680    o in natl_box_adjoint:
681      * updated exp 1 to 10
682        (but does not have time-mean vs. variable split results yet)
683    o updated global1x1/*_seaice_adj/
684      to incorporate latest changes
685    o enable useSingleCpuIO for mdsio vector routines
686      (applies in particular to tapelev I/O)
687    o removed inefficient K-loop in all active_file*control*.F
688    
689    checkpoint57m_post
690    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
691      and advect_cs (use EXCH-2 and standard cs-32 grid files).
692    o pkg/exch2: filling of face-corner halo regions is optional
693      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
694    
695    checkpoint57l_post
696     tag before updating tutorials (pre-release-2)
697    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
698       for output and interpolation of input fields onto model grid)
699    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
700       Affects results of exp. rotating_tank ; update output.txt.
701    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
702          and taking the square quantity and/or using a fraction-weight field.
703    o fix aim_diagnostics_init.F mate numbers.
704    o add mnc output capability to diagnostics/diagstat and update
705      our cvsignore files for the ACSII output generated
706    
707    checkpoint57k_post
708    o lab_sea now uses diagnostics package and provides a suite of
709      new EXF diagnostics output.
710    
711    checkpoint57j_post
712    o exf
713      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
714        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
715        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
716      * extended diagnostics output
717        - now includes all EXF variables
718        - hs, hl moved to common block
719        - separate S/R for diagnostics, called after ctrl vector is added
720        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
721        - EXFqnet contains true Qnet (i.e. includes qsw)
722      * updated verif. lab_sea, global_with_exf
723      * Rearranging hflux (exf_mapfields -> exf_getforcing)
724        to ensure that diagnostics sees a true EXFqnet
725    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
726    o diagnostics pkg: change pointers so that 1 diagnostic can be used
727      several times with different frequencies.
728    o mnc-ify the thsice package as requested by Daniel Enderton
729      - the monitor--MNC output needs work
730      - many attributes need to be added (most are currently blank)
731    o mnc-ify theaim_v23 package as requested by Daniel Enderton
732      - many attributes need to be added (most are currently blank)
733    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
734    o add Sadourny like discretization to the 4th.O vorticity advection scheme
735    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
736      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
737         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
738    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
739     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
740    
741    checkpoint57i_post
742    o Diagnostics package was changed: diagnostic allocation is now deactivated
743      by setting an empty file name in the namelist (used to be by setting 0 frequency)
744    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
745      add 1rst Order upwind vertical Shear.
746    o add a quick fix for A/B checkpointing in OFFLINE mode
747    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
748      end-run around the C/Fortran linking horror in eesup/src/timers.F
749    o added pkg/runclock: allows user to terminate run based on wall clock
750    o added non-hydrostatic scaling parameter: nh_am2
751    o pkg/my82: futile attempt to make results compiler-independent by adding
752      some "_d 0", etc. no effect.
753    o for mnc output, fill the 'T' coordinate var with myTime and create a
754      separate 'iter' variable for iteration count
755    o pkg/diagnostics:
756      add new capability: output of Global/Regional & per-level statistics ;
757      tested against monitor output (including land & thSIce) on various exp.
758    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
759    
760    checkpoint57h_done
761      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
762      data.diagnostics, data.gchem, data.ptracers) is done.
763    
764    o pkg/diagnostics: prepare for Global/Regional statistics.
765      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
766    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
767      and rename it: DIFFERENT_MULTIPLE
768    
769    checkpoint57h_post
770    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
771    o pkg/diagnostics: change output frequency, now in seconds (instead
772      of Nb of iterations). This requires to change data.diagnostics.
773    checkpoint57h_pre
774    
775    o in mnc, let the user create the output dir if both mnc_outdir_date
776      and mnc_outdir_num are false
777    o add fflags() to pkg/diagnostics which allows one to specify, on a
778      per-file basis, the file precision [default behavior is unchanged]
779    o added diagnostics to pkg/kpp, including computation of mixed layer
780      depth based on a temperature/density criterion
781    o updated verification/natl_box to test the new pkg/kpp diagnostics
782    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
783    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
784    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
785      not mnc -- this mistake was found by JMC and is now corrected
786    
787    checkpoint57g_post
788    o add Adams-Bashforth 3rd Order time stepping:
789      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
790      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
791    checkpoint57g_pre
792    
793    o make lambda[Theta,Salt]ClimRelax spatially varying
794      (default remains spatially uniform constant based on tau)
795    o added new control variables
796      * init. uVel, vVel, etanN
797      * lambda[Theta,Salt]ClimRelax
798    o separate masks used for ctrl_pack/unpack 'from write_grid' output
799      (suggested by G. Forget)
800    
801    checkpoint57f_post
802    o add parameter "baseTime" = model base time = time at iteration zero
803      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
804      account for baseTime shift
805    o move Coriolis arrays from PARAMS.h to GRID.h
806    checkpoint57f_pre
807    
808    o mnc-ifying the seaice package
809    o introduced an alternative length scale calculation for use in the limiting
810      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
811    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
812    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
813      as well as grad(vort3).  Made it compatible with both approximate form
814      for the cubed sphere and full form of these gradients.  Added flag
815      useFullLeith to select between approximate and full form.  
816    o add "d0" in getcon.F to reduce differences between compilers/platforms
817      update output.txt of exp. fizhi-gridalt-hs
818    o change port_rand funtion to allow to set the seed.
819    o fix obscure MNC bug involving conversion between reals and integers
820      - it caused no problems with certain (eg. gcc, ifc) compilers but the
821        new version is now more standards-compliant
822    o adjoint-related modifications
823      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
824      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
825      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
826    
827    checkpoint57e_post
828    o Adding eddy stress controls a la Ferreira et al.
829    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
830    
831    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
832      update output.txt of exp. fizhi-gridalt-hs
833    o add more "Z" dimensions and associated coordinate vars to MNC
834    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
835    o parameter calendarDumps: when set, approximate months (30-31 days) and years
836      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
837      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
838      months and years.  Requires pkg/cal.
839    o diagnostics: add pickup functionality
840      - off by default for backwards compatibility
841      - current version only uses MDSIO -- MNC will be added
842    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
843    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
844    
845    checkpoint57d_post
846    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
847    o modify verification/ideal_2D_oce so that it tests the creation of mnc
848      output from the diagnostics package
849    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
850    o make genmake2 more portable by using ".$FS" instead of ".f" for more
851      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
852    o add coordinate variables to the MNC output from the diagnostics package
853    o change MNC-flags default value: true when useMNC=TRUE
854    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
855      the ability (off by default) to read the grid information using MNC
856    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
857    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
858    o do snap-shot diagnostics at the middle of the time-interval (instead of
859      at the end).
860    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
861      new test for AIM with thSIce + slab-ocean
862    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
863    o move state variable diagnostics to the beginning of the time step ;
864      (note: still needs some work specially for snap-shot diagnostics)
865      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
866    
867    checkpoint57c_post
868    o Change testing option (-ieee) to get closer agreement between g77 & ifort
869    o generate new output.txt files on faulks with g77 & the new -ieee option
870    checkpoint57c_pre
871    
872    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
873      update output.txt of exp. global_ocean.90x40x15
874    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
875      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
876    o add saltFlux(+File) forcing capability with periodicExternalForcing
877    o allow to use pkg diagnostics for GM-Redi & ThSIce output
878    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
879    o improvements for the MNC output from DIAGNOSTICS:
880      - correct handling of the unlimitied dimension
881      - all dims now have associated coordinate variables
882      - variables located at U, V, and Corner ("Z") points are now written
883        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
884        *all* data points are output
885    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
886    o added pkg/seaice/seaice_monitor.F
887    o mdsio_readfield.F can now read files visible only to master MPI process.
888    o pkg/seaice: some test code for ice-modified ocean stress
889    o exf_getffields interpolation defaults to bilinear for all scalar forcing
890      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
891      spurious negative numbers for precipitation and humidity.  Will cause
892      some small numerical differences for integrations using pkg/exf/exf_interp.F.
893    o pkg/ctrl/
894      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
895        May be enabled via doPackDiag
896      *  introduce z-scaling of
897         + gradient (doZscalePack) and
898         + control (doZscaleUnpack)
899    o pkg/mdsio/
900      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
901      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
902    
903    checkpoint57b_post
904    o simplify options in diagnostics_fill arguments (remove weird combinations)
905    o fix MNC coordinate variables so that they now contain per-face index
906      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
907      general, EXCH2 grids are only aligned to a "local" coordinate system
908    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
909    o Implement instantaneous output within pkg diagnostics:
910      setting a negative frequency in data.diagnostics produces
911     "snap-shot" output (as opposed to time-average if freq > 0)
912    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
913      NOTE: change ptracer diagnostics name: use 2 characters to work with
914            more than 9 tracers. Add also diagnostics of advect & diffus flux.
915    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
916      becomes the coordinate variable for the 'T' dimension
917    o add CF-style coordinate variables to MNC
918      - just a first cut:  numbers are meaningless on the cubesphere and
919        missing along the T axis but otherwise it works!
920    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
921    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
922    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
923      this is based directly on what the model compute, so that the content of
924      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
925    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
926    o clean up build options files for SunOS, in particular
927      - remove -traditional from xmakedepend
928      - change -xarch=v9 to -xarch=native for f77
929      - restore use of make (not gmake)
930      - add CC=gcc if using g77
931    o changes per discussion of AM, JMC, & EH3 today:
932      - move redundant "grid" variables out of "state" -- in preparation of
933        creating proper CF-style coordinate variables and in recognition
934        that any/all grid variables can be easily copied (eg. w/NCO) from
935        the grid files into any of the other NetCDF files
936      - *always* output grid variables with MDSIO (this will eventually be
937        changed)
938      - output MNC grid file if useMNC is true
939    o every instance of _END_MASTER() has been found and replaced with
940      _END_MASTER( myThid ) in order to satisfy certain picky Sun
941      preprocessors
942    o re-arrange diagnostics pkg initialisation:
943     - allow each package to extend the available diagnostics list
944     - add some checking and fix small problems (multi-threaded, ...)
945     - new S/R diagnostics_fill (replace fill_diagnostics):
946       look through the short list of active diag. (instead of the long list)
947       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
948    
949    checkpoint57a_post
950    o this set of changes restores TAMC compatibility
951      tested for global_ocean.90x40x15 adjoint on trough
952      (what a pain)
953    
954    checkpoint57a_pre
955    o some modifs in tools/build_options for sunos
956    o call ctrl_pack for ctrl at end for optimcycle=0
957    
958    checkpoint57
959    o add horizontal bi-harmonic viscosity for vertical velocity
960      - new parameter viscA4W (defaults to viscA4)
961      - affects only non-hydrostatic code
962      - to be done: no-slip lateral boundary conditions
963    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
964    o implement Implicit Vertical advection for pTracers
965    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
966      (implemented also for implicit vertical diffusion & advection)
967    o OBCS: extend application of tracer open boundary conditions
968      to a strip beyond the boundary of width Olx/Oly
969    o add call monitor to TAF set of required calls (flow directives)
970      and include in natl_box_adjoint
971    o untangle a few ifdefs related to cost, ctrl, autodiff
972      untangel a few ALLOW_ECCO_OPTIMIZATION
973    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
974      (theta2, salt2 in ecco_cost_weights)
975    
976    checkpoint56c_post
977    o OBCS as control variables
978      - update ctrl_ad_diff.list, obcs_ad_diff.list
979      - remove balance of obcs controls from default
980      - fix index bug nobcs in ctrl_init
981      - fix dummy fields filen in ctrl_pack
982      - add dummy weights for obcs
983    o lsopt: comment out fort.94 output
984    o optim:
985      - remove unnecessary header files
986      - adjusted namelists
987      - add xerbla.F to Makefile
988    o exf:
989      - multiple modifications of exf_check_range
990      - unit change in exf_init_runoff from [m/year] to [m/s]
991    o mdsio:
992      - i/o-vector change debugLevel from debLevA to debLevB
993    
994    checkpoint56b_post
995    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
996      is called from DO_THE_MODEL_IO
997      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
998      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
999      - clean up PTRACERS_WRITE_TIMEAVE a little
1000    o add another verification experiment that tests both the cfc-pkg and
1001      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1002      reactive tendencies treated inline with regular timestepping
1003    o testreport previously did a lousy job of comparing small numbers, so
1004      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1005      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1006      testreport.
1007    o ptracers_monitor: bug fix for MPI
1008    
1009    checkpoint56a_post
1010    o GCHEM: finish reorganizating the package
1011      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1012        (introduces another 3D-array for each passive tracer, but only if
1013        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1014        gchemTendency is not needed because the timestep is done separately)
1015      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1016      - GCHEM is now---more or less cleanly---separate from PTRACERS
1017      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1018        so clear to me how that should be done in a general way.
1019    o CFC: improve formatting of output in CFC_ATMOS
1020    o PTRACERS:
1021      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1022        that ALL experiments with ptracers enable can be checked. This makes
1023        GCHEM_MONITOR obsolete.
1024      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1025        monitorFreq
1026      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1027    o add PTRACERS (PTR0[1-5]) to testreport output
1028    o exf_check_range:
1029      * default changed to .TRUE.
1030      * will check values for niter0 if debLevA, every timestep if debLevB
1031      * STOP in exf_check_range if 'out of range'
1032      * range chosen generous to allow for potential extema
1033      TBD: a version with stricter range
1034           permitted range would be runtime parameters
1035    o GMredi:
1036      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1037      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1038      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1039    o GCHEM:
1040      - move call to GCHEM_FORCING_SEP, so that it is now called before
1041        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1042      - introduced a useGCHEM runtime flag and applied it everywhere.
1043      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1044        this flag is now only visible within GCHEM-pkg routines.
1045      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1046        be replaced by a 3D array that is computed before thermodynamics; for
1047        this, the tracer ID iTracer had to be included into the parameter list
1048        of ptracers_forcing
1049      - set up forward_step to call gchem_forcing, that will replace
1050        gchem_forcing_int in ptracers_forcing
1051      - cleaning up
1052    o small cleaning of exch2: remove files that are also in eesupp/src
1053    
1054    checkpoint56
1055    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1056    o mnc: cleanup "full" files--fixes out-of-memory problem
1057    o ECCO-GODAE
1058      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1059      * fully merged and updated from SIO code
1060        windstress sign change affects
1061        - exf_inscal_[u/v]stress
1062        - sign of xx_tau[u/v] adjustments
1063        - signs in cost_scat
1064      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1065      * natl_box_adjoint updated and compressed
1066      * 2-level checkpoint switch added
1067        (tested in EXP. 1 of natl_box_adjoint)
1068      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1069    o SVD
1070      * first complete, non-hacked version for SVD calculations
1071      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1072        performed via direct access files admtlm_vector.it????
1073        (via ctrl_[un]pack)
1074      * optimcycle is used for ARPACK iteration counter
1075        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1076      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1077        and add linear transforms where necessary
1078      * controls are initial/final SST, SSS (can be extended; need to check
1079        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1080    o mdsio: filename info to both stderr, stdout
1081    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1082      from sign change
1083    
1084    checkpoint55j_post
1085    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1086      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1087    o add consistent build directories and .cvsignore files to verification
1088    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1089    o make all subroutines 30 or less characters in length for certain older
1090      compilers to work (a thorough search only turns up two routines in
1091      pkg/ptracers)
1092    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1093      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1094    
1095    checkpoint55i_post
1096    o change arrays for total vertical diffusivity (2.D if explicit,
1097      3.D if implicit) ; each ptracer uses its own background value.
1098    o added mnc/NetCDF output capability to ocn_compon_interf
1099      - added bits to verification/cpl_aim+ocn so that it can run on
1100        ITRDA and other clusters without the mpirun "-wd" option
1101    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1102      configuration
1103    o give MNC the ability to create additional files rather than
1104      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1105      - the default is just less than 2GB which is a practical limit
1106        on many systems
1107    o Compute the non-local term using either KPP vertical diffusivity (=default)
1108       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1109    
1110    checkpoint55h_post
1111    o add verification test "vermix"
1112    o remove all the *_ioinc flags and replace with the single global
1113      outputTypesInclusive flag
1114    o allow to set a vertical profile of vertical diffusivity for T & S
1115    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1116    o useMNC moved from data.mnc to data.pkg
1117    
1118    checkpoint55g_post
1119    o Renaming carbon AD experiments to comply with testreport conventions
1120    o Updating adjoint of Held-Suarez hs94.1x64x5
1121    o Fixing directives for non-ECCO forward_step, after ECCO directives
1122      have been fixed to avoid recomp. of do_oceanic_phys
1123      Works well for global_ocean.90x40x15,
1124      but recomp. issue remains for carbon
1125    o Updating adjoint output for natl_box_adjoint after
1126      pkg/ecco has been modified (see taga c55d_post)
1127    
1128    checkpoint55f_post
1129    o rename to timeave_init_fixed
1130    
1131    checkpoint55e_post
1132    o some delicate re-shuffle of store directives to avoid one
1133      extra call of do_oceanic_physics
1134      affects ecco_the_main_loop.F, do_oceanic_physics.F
1135      checkpoint_lev1_directives.h
1136    o NB: this may break global_ocean adjoint temporarily,
1137      but it is clear how to fix it. Will do later, need this now.
1138    
1139    checkpoint55d_post
1140    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1141    o ecco_cost_weights is modified to 1x1 runs
1142    o modifs to allow observations to be read in as
1143      single file or yearly files
1144    o enable to read exf forcing fields as either
1145      single file or yearly files (flag useExfYearlyFields)
1146    checkpoint55d_pre
1147    
1148    o switch between 2-level and 3-level checkpointing
1149    o add ability of MNC to write local and "partial" (eg. 2D slices where
1150      the full 3D field is never actually stored) arrays to NetCDF files
1151      with the correct (that is, the complete multi-dimensional) set of
1152      array indicies
1153      - used in mom_vecinv() to write the diagFreq output
1154      - tested (demonstrated) in verification/aim.5l_cs
1155    o further mnc-ification
1156      - add verification/lab_sea to the list with mnc setups
1157      - fix undefined mnc v-names in cd_code
1158      - add kpp to mnc output (both snapshot and timeave)
1159    o non-hydrostatic code
1160      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1161        in calc_gw.F
1162      - defaults to viscAh
1163      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1164        friction or Leith) in non-hydrostatic mode, as long as there is
1165        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1166    o pkg/cost
1167      extend simple cost functions to treat time mean quantities
1168      (T,U,V) via cost_accumulate_state from cost_tile
1169    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1170        be 2 times larger than the minimum size the advection scheme requires.
1171        now get a perfect conservation of salt in advect_cs test-exp (updated)
1172    o GGL90 (Gaspar's TKE mixed layer)
1173      - add horizontal diffusion of TKE, requires exchanges in
1174        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1175        default. In OPA there is no horizontal diffusion of TKE but the
1176        mixing coefficients are computed from a horizontal average of TKE of
1177        6 points or so. I think that diffusion has a little more physical
1178        justification.
1179      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1180        was in vain)
1181      - mask tke-variable in ggl90_init
1182    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1183    o fix biharmonic diffusion on CS-grid.
1184    o more obcs stuff
1185      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1186        for reading boundary values. This routine is called from
1187        obcs_prescribe_read
1188      - updated obcs_check
1189      - changed sponge layer relaxation parameter units for days to seconds
1190      - turned off sponge layer by default
1191      - changed argument list of OBCS_CALC to myTime+deltaTclock
1192      - fixed about 35 bugs in obcs_external_fields_load
1193    
1194    checkpoint55c_post
1195    o obcs stuff
1196      - new runtime flags useOBCSprescribe, useOBCSbalance
1197      - re-arranged obcs_calc
1198      - moved exf_getobcs to obcs_prescibe_read
1199        obcs_prescibe_read is called after ORLANSKI stuff
1200        and independent of it (executable can contain all).
1201      - updated obcs_check
1202      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1203        These may be necessary only if tangential velocities are
1204        prescribed at OB, not sure, needs testing.
1205    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1206      which simplifies the calls and passes the ifc check-bounds test
1207    
1208    checkpoint55b_post
1209    o add a 2D scalar, Z location, exchange_2 routine.
1210    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1211      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1212      affects advect_cs results (for the wrong reason): update output.txt
1213    o use a more standard discretization for biharmonic viscosity ;
1214     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1215      affects results of dome set-up: update output.txt
1216    o fix gad_advection.F (CubedSphere part), back to version 1.23
1217    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1218    
1219    checkpoint55a_post
1220    o merged code to
1221      * prescribe/read time-dependent open boundaries
1222        (works in conjunction with exf, cal)
1223      * sponge layer code for open boundaries
1224      * each boundary N/S/E/W now has its own CPP option
1225        (healthy for the adjoint)
1226    
1227    checkpoint55
1228    o up-to-date adjoint of previous breaks
1229      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1230      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1231      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1232      - carbon: * remove tr1-related adjoint verification
1233                * add ptracer as control variable
1234    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1235      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1236    
1237    checkpoint54f_post
1238    o in verification/carbin/ remove experiment related to
1239      ALLOW_PASSIVE_TRACER (array tr1 etc)
1240      code_ad/ input_ad/ results_ad
1241    
1242    o add two new packages
1243      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1244        + subject to optimization (memory)
1245      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1246        + subject to reordering (many GOTOs in the original code)
1247        + so far opps is called for every (i,j) point, and then operates in
1248          the vertical; one may want to reorder the scheme in order operate in
1249          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1250          fields)
1251    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1252      - all verification tests compile and run with linux_ia32_g77
1253      - defaults are compatible with current input files--nothing
1254        should change if you were not previously using MNC
1255      - MNC output has been added in numerous places (eg. timeave)
1256        but there are still a few writes not yet do-able with MNC
1257        (this is in progress)
1258      - flags now allow for either/or/both use of MDSIO and MNC and
1259        documentation will soon follow
1260      - numerous small formatting cleanups for ProTeX
1261    o add version info (via BUILD_INFO.h) to MNC and stdout
1262    
1263    checkpoint54e_post
1264    o add two new packages
1265      - pp81 (Packanowski and Philander, 1981), Richardson number and
1266        stratification dependent mixing
1267      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1268      - these scheme operate in a similar manner as KPP (without ghat, of
1269        course), however there is only one diffusivity that is used for both
1270        temperature and salinity (and passive tracers)ç
1271    o add offline package
1272    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1273      provided by Stephanie Dutkiewicz
1274    o genmake2: add ability to search for C compilers and cleanup test output
1275      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1276    
1277    checkpoint54d_post
1278    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1279    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1280      leading to additional shift by 5 days each year of integration
1281       (i.e. leading to considerable offset over the years)
1282    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1283    o start with no AB and no initial filtering (staggerTimeStep):
1284      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1285    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1286      (external loading & cpl import/export stay in forward_step.F)
1287    o update coupling interface to work with new staggerTimeStep
1288    o change MDSIO ptracers_pickup.
1289    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1290    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1291    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1292    
1293    checkpoint54c_post
1294    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1295      this affects (truncation error) output.txt of test-exp:
1296       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1297    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1298    o change Qnet to always be the net heat flux, (+upward).
1299      affects (truncation error) output of natl_box exp.: updated
1300    o define the max number of passive tracers in PTRACERS_SIZE.h
1301    o start to test mnc routinely in exp0
1302    o add sea-ice loading (sIceLoad) as a new forcing field.
1303    
1304    checkpoint54b_post
1305    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1306       impressive on Altix and Opteron systems)
1307    o diagnostics can now write NetCDF files through the mnc package
1308    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1309    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1310    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1311      affects (truncation error) output of lab_sea & natl_box exp.: updated
1312    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1313    
1314    checkpoint54a_post
1315    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1316    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1317    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1318    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1319      + internal_wave (shift in writing cg2d_ini_res)
1320    checkpoint54a_pre
1321    
1322    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1323      - modified verification/lab_sea and natl_box_adjoint accordingly
1324    
1325    checkpoint54
1326    checkpoint53g_post
1327    o prepare splitting of thermodynamics: store convect.counter in common block
1328    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1329      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1330    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1331    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1332    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1333    o restore adjointability
1334    
1335    checkpoint53f_post
1336    o modifications that affect AIM experiment results (update output.txt):
1337      - no advection of S at top interface Nr (pkg/generic_advdiff)
1338      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1339    o AIM pkg:
1340      - include stability function into surf.Flux derivative relative to Tsurf
1341      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1342    
1343    checkpoint53e_post
1344    o merged cylindrical coord configuration
1345    o added rotating_tank experiment
1346    checkpoint53e_pre
1347    
1348    checkpoint53d_post
1349    o faulks upgraded: re-generate output.txt that have changed:
1350       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1351    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1352    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1353    o added Sadourny discretization of Coriolis
1354      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1355      - re-enabled use of omega3 (useAbsVorticity)
1356    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1357      vector-invariant equations
1358      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1359    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1360      hopefully without new bugs
1361      - still to do: biharmonic friction for non-hydrostatic w
1362    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1363    o regenerated output for global_ocean_ebm (using -ieee)
1364    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1365      of mom_common/
1366      - simple re-arrangement of instructions within computing loop
1367    checkpoint53d_pre
1368    
1369    checkpoint53c_post
1370    o new version of coupler for AIM+thSIce and Ocean models
1371     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1372     - land: change Evaporation of snow
1373     - aim with thSIce: fix bug in snow-precip.
1374    o changes to calc_gw.F
1375     - bug fix for w^2 term near the bottom boundary
1376     - (hopefully) improve the lateral slip boundary condtions for use with
1377        partial/looped cells
1378      - because the bug fix changes two verification experiments anyway (exp5
1379        and plume on slope), change the lateral boundary condition from half slip
1380        to the value of no_slip_sides
1381    o ebm package wasnt quite up to the parallel task. Fixed that.
1382    o Adjoint of EBM package + verification
1383      * TLM OK
1384      * ADM not sufficient accuracy yet (needs further testing)
1385    
1386    checkpoint53b_post
1387    o Commiting new energy balance model to repository
1388      * package is pkg/ebm
1389      * verif. is verification/global_ocean_ebm
1390      * references are in ebm_driver.F
1391    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1392    C        Global thermohaline circulation. Part I:
1393    C        Sensitivity to atmospheric moisture transport.
1394    C        J. Climate 12(1), 71-82
1395    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1396    C        Global thermohaline circulation. Part II:
1397    C        Sensitivity with interactive transport.
1398    C        J. Climate 12(1), 83-91
1399    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1400    C        Destabilization of the thermohaline circulation
1401    C        by atmospheric eddy transports.
1402    C        J. Climate 7(12), 1870-1882
1403    o Will need long integration testing.
1404    checkpoint53b_pre
1405    
1406    o created pkg/mom_common in preparation for variable viscosity code
1407    o renamed and split ini_mnc_io
1408    o pkg/land: only liquid water can diffuse or run-off
1409    o AIM using land: soil wetness availability account for snow
1410    o added printMapIncludesZeros to EEPARMS namelist
1411    
1412    checkpoint53a_post
1413    o restore TAMC compatiility for exf_constants.h
1414      (no usage of _d in .h)
1415    o Additional storing in KPP in an attempt to fix
1416      TAMC problem with adjoint of KPP code.
1417      (no success...)
1418      Identical code works fine with TAF.
1419    o Fixed verification/natl_box_adjoint experiments.
1420      Initial conditions for Experiments 4 and 5 are now
1421      set to "SEAICE_initialHEFF=0", which is more reasonable,
1422      and hence gives results closer to that of Experiment 2.
1423      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1424    
1425    checkpoint53
1426    o stable checkpoint with up to date adjoint
1427      TLM tests only run for 1st grdchk at the moment. Its unclear if
1428      this is a code problem or a problem with resetting code for g_
1429      variables that is being autogenerated wrong.
1430      Otherwise:
1431       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1432       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1433         are both still in chaos following their security messes.
1434    
1435    checkpoint52n_post
1436    o various build (mostly genmake2) changes including:
1437      - ability to build/run more easily within Cygwin and MacOS X
1438      - more complicated Makefiles with a stronger dependence on Gnu Make
1439    o pkg/seaice modifications
1440      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1441        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1442        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1443      - changed proxy for geostrophic velocity and updated
1444        verification/lab_sea/results/* accordingly
1445      - removed ADI dynamic solver from pkg/seaice
1446      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1447        they caused a segmentation fault under certain circumstances
1448      - removed unused field WATR
1449    o bug fix in exf-package:
1450      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1451         now reflect that.
1452    o small fixes in the cal-package:
1453      - set reference date to first of January for the 'model'-calendar
1454      - failing of cal_CheckDate in cal_FullDate now actually results in a
1455        warning
1456    o small modifications in exf-package to increase flexibility:
1457      - change climtempfreeze from a constant to a runtime parameter that
1458        is specified in data.exf_clim (default = -1.9)
1459      - introduce runtime parameter windstressmax (default = 2.0) that is
1460        specified in data.exf
1461    o fix in pkg/thsice:
1462      - update Evap (Tsf changes) to be consistent with Latent heat flux
1463      - maintain snow precipitation unchanged (even if Tsf >=0).
1464     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1465    
1466    checkpoint52m_post
1467    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1468      this does not change any of the results, because myIter=0 in swfrac always
1469      lead to jwtype=2 (the default anyway), but the call makes little sense
1470      as a default
1471    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1472    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1473      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1474    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1475    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1476    o extending useSingleCpuIO option to work with new exch2 I/O format
1477      - old-style, missing-tile I/O is still accessible by defining CPP
1478        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1479    o monitor package can write to NetCDF files and/or STDOUT
1480    o fix re-definition bug in MNC_GRID_INIT_ALL()
1481    o doc/api_reference added
1482      - a framework for building an API Reference Manual using all
1483        the "protex" comments embedded in the code
1484      - see pkg/generic_advdiff, pkg/mnc for examples
1485    o MNC:
1486      - make myThid the last argument for all subroutines
1487      - new default for the grid files: NO halos
1488      - add useMNC and other run-time flags
1489      - separate per-file-group handling of the unlimited dimension
1490      - early initialization of MNC w/ flags read at the eeboot stage
1491        and lookup tables set in initialize_fixed
1492      - write all MNC output to a freshly-created directory
1493    o thermodynamics sea-ice (thsice) is now tested with testreport.
1494    o test exp. advect_cs: use the standard cs32 grid ; update output.
1495    o Added functionality to grdchk:
1496      pick global i,j,k position (or nearest wet) where to perform check.
1497    
1498    checkpoint52l_post
1499    o new land formulation:
1500      a) use ground enthalpy as prognostic variable to ensure exact
1501         energy conservation.
1502      b) account for water temperature and for latent heat of freezing
1503         in all processes (rain, run-off, ground storage)
1504      c) compute surface and ground temperature implicitly.
1505    o aim_v23 modification for new land model:
1506      a) Treat separately land / ocean / sea-ice surface fluxes
1507         to allow implicit computation of land & sea-ice surface temp.
1508      b) add snow precipitation.
1509    checkpoint52l_pre
1510    
1511    o fix problem (when 1 tile is empty) in min/max monitor.
1512    o fix bug in timeAve (u,vZetatave in common block)
1513    o no restoring terms under ice for pkg/seaice
1514    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1515    o bug fix for pkg/seaice pickups
1516    o change MNC call locations and add coordinate attributes
1517    o mask vorticity at the corner ; affects global_ocean.cs output
1518    o fix ini_curvilinear_grid ; test CS experiments with mpi
1519    o aim.5l_cs: modify sea-ice fraction input file ; update output
1520    o exf: Adding simple range check routine for exf fields after read
1521    
1522    checkpoint52k_post
1523    o removed top-level directory "diags"
1524      - we migrated these functions to pkg/timeave a long time ago
1525    o fixed bug introduced in pkg/monitor
1526    o accuracy ctrlprec = 32 insuffient for gradient checks using
1527      averaged fields (I/O via cost_averages)
1528      -> use ctrl.h in active_file*.F to control I/O precision.
1529    o paramter list of CALL ADTHE_MAIN_LOOP
1530    o added initial do_the_model_io to ecco
1531    o set all ...Freq to zero after cost_final
1532      taveFreq, dumpFreq, pChkptFreq
1533    o MAIN and ECCO differentiability restored
1534    
1535    checkpoint52j_post
1536    o fix nchklev in tamc.h for global_ocean...
1537    o Bringing flow and store directives up-to-date
1538    o Really weird thing!
1539      call do_the_model_io from the_main_loop with parameters
1540      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1541      TAF places a faulty re-call of initialise_varia
1542      after cost_final call which should not be there!
1543    checkpoint52j_pre
1544    
1545    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1546      error messages
1547    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1548    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1549      debug output
1550    o modfied mdsio_writefield.F to handle non-global files under exch2
1551    o update AIM Cubed-Sphere exp (aim.5l_cs):
1552      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1553    o update AIM Equatorial Channel exp:
1554      use standard aim_v23 pkg and change the SST fields to be more realistic.
1555    o globalFile now works with exch2
1556    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1557      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1558    o limit timeave output for hi-res integrations
1559    
1560    checkpoint52i_post
1561    o removed CPP_EEOPTIONS.h from verification/*/code
1562    o updated the tiling for global_ocean_pressure
1563    checkpoint52i_pre
1564    
1565    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1566      the old pkg/aim).
1567    
1568    checkpoint52h_pre
1569    o shortened offending lines in exch2_send_rx?.template
1570    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1571    o genmake2: add build & execute test for NetCDF code
1572    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1573      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1574    o added useSingleCPUIO flag to monitor.F and mon_out.F
1575    o added temporary hack for sea-ice dynamics on the cube:
1576      metric terms are ignored and it is assumed that
1577      there is no sea-ice on cube faces 1, 2, 4, and 5.
1578    
1579    checkpoint52f_post
1580    o added exch2 cube routines to pkg/exch2
1581    o modified hs94.cs-32x32x5 to use it
1582    o added new grid files to hs94.cs-32x32x5
1583    checkpoint52f_pre
1584    
1585    checkpoint52e_post
1586    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1587      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1588    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1589      to work with implicit vertical advection and AB ;
1590    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1591    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1592     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1593    checkpoint52e_pre
1594    
1595    o fix bug in impldiff when Nr=1 or Nr=2.
1596    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1597    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1598    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1599      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1600    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1601    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1602    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1603    
1604    checkpoint52d_post
1605    o re-tiled many expts to allow comparison in multi-processor mode
1606      - updated output accordingly
1607      - changed hs94.128x64x5 to use intial T from file rather than use the
1608        random number generator
1609    o add infrastructure in model routines for fizhi and gridalt packages
1610    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1611    o changes to permit hi-res, cubed-sphere, configuration
1612      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1613      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1614      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1615        of surface winds for the cube
1616      (A verification experiment, based on global_ocean.cs32x15, but with
1617       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1618       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1619       complete with example surface forcing files and matlab scripts to look
1620       at the output and compare it with that of global_ocean.cs32x15.)
1621    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1622       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1623       to conform to the common rule.
1624    o check-in the first version of the coupler + interfaces for multi-components
1625       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1626       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1627       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1628       - ocean and atmos. share the same horizontal grid (no interpolation).
1629       - exchanges between component and coupler is done in forward_step
1630    o new verification experiment, cpl_aim+ocn:
1631       coupled ocean - AIM atmosphere on cs32 grid.
1632    
1633    checkpoint52d_pre
1634    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1635    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1636    
1637    checkpoint52c_post
1638    o Fixing OPTIONS files for use of exf:
1639      - ALLOW_ECCO not needed
1640      - ECCO_CPPOPTIONS.h should not be included from
1641        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1642        as has been the case in the past
1643      - All cal/exf related options are currently set in
1644        single header file. Should remain so until we
1645        agree on a consistent new policy.
1646    o Removed all CPP options for cal package.
1647      cal has no more CPP options.
1648    o modified STOREs in GAD_ADVECTION
1649    o corrected key comp. for passkey
1650    
1651    checkpoint52b_post
1652    o new version: "thsice" of thermodynamic sea-ice pkg:
1653     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1654     - modify fluxes but do not change theta directly;
1655     - light cleaning of bulk_force pkg (still needed with thsice).
1656     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1657       + output_thsice.txt to test thsice & bulk_force pkgs.
1658    o put back grid & coriolis monitor output.
1659    checkpoint52b_pre
1660    
1661    o call "do_the_model_io" at the beginning (=> dump initial state)
1662    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1663    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1664      (need info on NUMBER_OF_PTRACERS)
1665    o missing PTRACERS headers in some routines
1666    o default tamc.h in pkg/autodiff supposed to crash
1667      to ensure proper customization
1668    
1669    checkpoint52a_post
1670    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1671      - moved surfaceTendencyTice from pkg/seaice to main code
1672      - subroutine FREEZE_SURFACE now limits only surface temperature
1673        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1674        => new output.txt for global_ocean.cs32x15 & global_with_exf
1675      - keep the old version of FREEZE for backward compatibility;
1676        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1677      - corresponding modifs for TAF directives
1678    o added surface flux output variables to TIMEAVE_STATVARS
1679    o time-averaged output for pkg/ptracers
1680    o fix problem with ECCO-related divided adjoint
1681      snapshot file was missing some ad-variables,
1682      but no warning issued by TAF
1683    
1684    checkpoint52a_pre
1685    o some bug fixes for #undef REAL4_IS_SLOW
1686    
1687    checkpoint52 = ecco_c52_e35
1688    o after testing adjoints of checkpoint51u_post
1689    
1690    checkpoint51u_post
1691    o this is the post-merge tag of the ecco-branch
1692      (needs another clean checkout and re-testing)
1693    o various natl_box_adjoint configs and results
1694      but no input fields
1695    o obcs adjoint not yet merged!
1696    o adding ECCO global 1x1 and 2x2 degree configs
1697    o updated/extended some store directives for seaice
1698    o pkg/ecco now containes ecco-specific part of cost function
1699    o top level routines the_main_loop, forward_step
1700      supersede those in model/src/
1701      previous input data.cost now in data.ecco
1702      (new namelist ecco_cost_nml)
1703    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1704    
1705    checkpoint51t_post
1706    o this is the pre-merge tag of the ecco-branch
1707    
1708    checkpoint51s_post
1709    o cleanup: removed various obsolete #define-s
1710    o pkg/grdchk
1711      - renamed 'ph-grd 3' to 'grad-res'
1712      - merged from ecco-branch
1713        (remaining bug fixes for obcs gradient checks)
1714      - additional high-precision output for testreport
1715        (grep for 'precision_grdchk_result')
1716    
1717    checkpoint51r_post
1718    o cleaned up or removed CPP_OPTIONS.h files
1719    o updated results for some of the tests to reflect the new
1720      optfiles (-ieee: -O0 instead of -O3)
1721    
1722    checkpoint51q_post
1723    o cd_code:
1724      - moved cd_scheme.F -> cd_code_scheme.F
1725      - separate read_checkpoint from cd_code_ini_vars.F
1726      - separated cd_code part from write_checkpoint
1727      - updated AD_SOURCE, generated .flow
1728      - added CD_CODE_VARS.h to the_main_loop
1729      - Moving cd_code specific store dir.s to pkg/cd_code
1730    o ctrl package totally restructured
1731      - pack/unpack now optional and decoupled from
1732        xx_/adxx_ I/O
1733      - ctrl_pack/unpack cleaned
1734        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1735      - confined inclusion of AD_CONFIG.h to where necessary.
1736    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1737    
1738    checkpoint51p_post
1739    o create initial cd_code package
1740      - WARNING: the initialization of fields within packages
1741        is broken because INI_FIELDS (where READ_CHECKPOINT is
1742        called) is called *before* PACKAGES_INIT_VARIABLES.
1743        This seems to be backwards since
1744        1) its important to initially zero the entire field including
1745           the "halo" region
1746        2) zeroing needs to be done *before* reading pickup info
1747           and the pickup call might or might not happen in any
1748           particular run
1749      - this needs an overhaul for R2
1750    o cleanup verification/*/code/GMREDI_OPTIONS.h
1751    o cleanup testreport
1752    
1753    checkpoint51o_post
1754    o bringing AD-related verif's up to date with genmake2
1755      - carbon/
1756      - global_ocean.90x40x15/
1757      - hs.94.1x64x5/
1758      - (front_relax/ )
1759    o (more) consistent directory structure for AD-related verif.'s
1760    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1761    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1762    o bug fix in find_alpha.F for MDJWF:
1763      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1764        change rho -> rho-rhoConst
1765      - replace call find_rho to find_rhonum
1766    o initialisation of rFlx extended to full array (required by TAF)
1767      and shifted to thermodynamics
1768    o removed PTRACERS.h in ptracers routine
1769    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1770    o Correcting initialisations for fVerU, fVerV.
1771    o helping TAF to recognize dependency on kUp for
1772      fVerU, fVerV
1773    o Replacing delZ by delR in pkg/ctrl/
1774    checkpoint51o_pre
1775    
1776    o undid all of cp51 pending some cleanups and discussion
1777    o added the [#include "AD_CONFIG.h"] statement to all files that need
1778       it for adjoint/tl #defines
1779     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1780     o removed tools/genmake since it no longer works
1781    
1782    checkpoint51n_post
1783    o modifications to make FREEZE flux visible to pkg/kpp
1784      - moved surfaceTendencyTice from pkg/seaice to main code
1785      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1786      - subroutine FREEZE now limits only surface temperature
1787        (this means new output.txt for global_ocean.90x40x15,
1788         global_ocean.cs32x15, and global_with_exf)
1789    o added surface flux output variables to TIMEAVE_STATVARS
1790    
1791    checkpoint51n_pre
1792    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1793    o added [#include "AD_CONFIG.h"] to all files that use the following
1794      defines:
1795      - ALLOW_ADJOINT_RUN
1796      - ALLOW_TANGENTLINEAR_RUN
1797      - ALLOW_ECCO_OPTIMIZATION
1798    
1799    checkpoint51m_post
1800    o incorporating changes to get TAMC/TAF working in genmake2
1801      - added new TAMC/TAF targets to the Makefile
1802      - various cleanups related to package handling
1803      - these changes should have no impact on the forward model
1804    
1805    checkpoint51l_post
1806    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1807     - faster algorithm for cal_addtime.F
1808     - higher precision arithmetic, where needed
1809     - pkg/exf *startdate variables changed from calendar date to
1810       model integration time
1811    
1812    checkpoint51l_pre
1813    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1814    o enable to apply restoring on S & T only in a latitude band.
1815    o update output (external_forcing_surf modif. change truncation errors)
1816       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1817    
1818    checkpoint51k_post
1819    o change default to: useNHMTerms=.FALSE.
1820     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1821       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1822     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1823        exp1, ideal_2D_oce
1824     - change data file of oceanic exp (leave the results unchanged for now)
1825       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1826    o set gravitySign automatically according to the vertical coordinate used
1827      (and change sign: back to "logical" value: +1 when R increases downward)
1828    o added an include barrier to the default CPP_OPTIONS.h and
1829      removed the #include "PACKAGES_CONFIG.h" from it
1830    o fix a bug in mom_fluxform (from chk51j_post)
1831    
1832    checkpoint51j_post
1833    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1834    o adjusted some flow directives (dynamics, thermodynamics)
1835    o added cubed-sphere case to test cost function
1836    o heckpoint_lev?_directives.h now include
1837      pkg-specific directives, whenever those are enabled.
1838    o Moving pkg-specific flow directives to corresponding pkg
1839      Moving pkg-specific differentiation list to corresponding pkg
1840      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1841      ---> conventions are
1842           - pkg_ad.flow
1843           - pkg_ad_diff.list
1844           - pkg_ad_check_lev?_dir.h
1845    
1846    checkpoint51i_post
1847    o merge of the branch-genmake2
1848      - knowingly breaks the older genmake
1849      - automatic generation of all ALLOW_${PKG_NAME} defines
1850      - new testreport supersedes older testscript
1851    o large number of package inclusion and header cleanups
1852    checkpoint51i_pre
1853    
1854    o new output for adjoin of global ocean vector invariant
1855    o fix for checkpoint of thermodynamic seaice and bulk_force
1856    o Steph gchem various cleanups
1857    
1858    checkpoint 51h_pre
1859    o fixed some single quotes
1860    o modify gchem pkg to be more versatile
1861    o modifications to clean up dic pkg
1862    o add pkg/cfc
1863    
1864    checkpoint51g_post
1865    o provide links for ARPACK and ADM*TLM
1866    o start removing verification/vero/
1867    o update AD-related stuff
1868      (in particular some IF-statements in model/src/ routines)
1869    o adding to verification/global_ocean.90x40x15/ adjoint of
1870      vector invariant setup
1871    
1872    checkpoint51f_post
1873    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1874    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1875      of tracer Green's fucntions for ocean inversion project.
1876    
1877    checkpoint51f_pre
1878    o Added on-the-fly spatial interpolation capability
1879        "USE_EXF_INTERPOLATION" to pkg/exf.
1880      - This is a temporary Cartesian-grid hack until
1881        the super-duper ESMF coupler becomes available.
1882      - See verification/global_with_exf/README for usage example.
1883      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1884        flags and modified pkg/seaice accordingly.
1885    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1886        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1887        non-local transport term.
1888    
1889    checkpoint51e_post
1890    o pkg/mom_vecinv:
1891      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1892      - add time-ave diagnostic of vorticity advection.
1893    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1894    o atmospheric geopotential: - include water vapor effect;
1895                                - use p^kappa in p* scaling.
1896    o land pkg: read initial state from files.
1897    o AIM : add stratospheric drag in the upper level
1898    
1899    checkpoint51d_post
1900    o change function ILNBLNK (=> last non-blank char.) to return zero
1901      (instead of the string length) when the string. char is empty
1902    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1903    o modif's to restore TAMC compatibility
1904      - avoid "_d" constructs in PARAMETER declarations
1905      - avoid interrupting lines by comment lines
1906    o Use cluster local disks for purely local I/O
1907      vs. globally visible disks needed for ctrl stuff
1908      (merged from ecco-branch)
1909      - new active_file_loc... and mdsio_..._loc routines
1910      - affected packages: autodiff, ctrl, grdchk, mdsio
1911    
1912    checkpoint51c_post
1913    o introducing integer flag debugLevel
1914      - debLevZero: suppress all output
1915      - debLevA: standard
1916      - debLevB: equivalent to current debugMode=.TRUE.
1917    o introducing pathname variable mdsioLocalDir for mdsio
1918      that can be specified at runtime
1919      (relevant for cluster I/O to local disk)
1920    `
1921    >>>checkpoint51b_post
1922    adjoint of ptracers
1923    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1924    o extended state in checkpoint_lev?, etc.
1925    o alternative ctrl/cost with tr1 or ptracer
1926    o new comlev1_bibj_ptracers
1927    o new ptracers.flow
1928    o made ptracers_forcing same as external_forcing_s
1929    o added verification for adjoint with ptracers
1930      - adm. grdchk fail so far
1931      - tlm. grdchk OK
1932      - checked tapelev/comlev recomputations: OK
1933    <<<checkpoint51b_pre
1934    
1935    checkpoint51a_post
1936    o added code for biogeochemistry package
1937      - new pkgs: dic, gchem
1938      - new subroutine in ptracers
1939    o modify code for biogeo packages
1940      - in model/src and pkg/ptracers
1941    
1942    checkpoint51
1943    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1944      - autodiff, ctrl, exf, grdchk, seaice
1945      kept separate packages
1946      - cost, ecco, obcs
1947    o updating verification/internal_wave, verification/lab_sea
1948      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1949    
1950    checkpoint50i_post
1951    o Preparing next differentiable checkpoint and sync
1952      of MAIN vs. ecco-branch
1953      - 1st step: this one is differentiable
1954      - 2nd step: next(! not this) checkpoint will have updated packages
1955                  from ecco-branch)
1956    
1957    checkpoint50h_post
1958    o new package "land": provide surface BC for AIM.
1959    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1960    o AIM: use true log-P extrapolation for near surface temp (= as in
1961        F.Molteni paper) ; update aim.5l_cs output.
1962    o New variable in PARM03 for more flexible pickups
1963    o somewhat cleaned package initialisation sequence for
1964      ctrl/ cost/ ecco/ in packages_... routines
1965    
1966    checkpoint50g_post
1967    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1968      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1969      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1970        made the default because of faster convergence than ADI
1971    
1972    checkpoint50f_post
1973    o exf totally restructured
1974      - replaced all exf_set_ routines by one generic exf_set_gen.F
1975        and made sure it's still differentiable
1976      - split exf_getffields.F into new exf_bulkformulae.F
1977      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1978      - updated adjoint/makefile and relevant verif. accordingly
1979    
1980    checkpoint50f_pre
1981     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1982          + change Evap over land. (update aim.5l_cs output)
1983     o added missing .cvsignores and made uniform across expts
1984     o changed configuration of tidal_basin_2d expt
1985     o added pkg/debug functions for tracing code in fatal crashes
1986     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1987     o new fn in pkg/monitor to stop model if solution grows too big
1988     o removed lots of single quotes from comments
1989    
1990    checkpoint50e_post
1991    o make KPP work with PTRACERS
1992     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1993       nearly a copy of kpp_transport_s
1994     - there is no analogue to SurfaceTendencyS, so I have to use
1995       gPtr(of the surface layer) instead
1996    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1997    checkpoint50e_pre
1998    
1999    checkpoint50d_post
2000    o change kpp output from multiple-record state files to single-record state
2001      files analogous to write_state.F
2002    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2003      analogous to the cg2d-related output.
2004    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2005      so that writing to internal file fn (with length 512) fails.
2006    checkpoint50d_pre
2007    
2008    checkpoint50c_post
2009    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2010    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2011    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2012    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2013    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2014    
2015    checkpoint50c_pre
2016    Merging from release1_p13:
2017    o bug fix for pkg/seaice dynamic solver
2018    o Added SEAICE_initialHEFF to pkg/seaice
2019    
2020    checkpoint50b_post
2021    o store u*,v* in gU,V instead of in guNm1,gvNm1
2022    o in order to put the momForcing out of the Adams-Bashforth:
2023      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2024      to timestep.F
2025    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2026    o re-generate output for highly sensitive test-exp:
2027       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2028    
2029    checkpoint50b_pre
2030    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2031    o corrected CPP option mismatch in exf_Bulk... functions for case
2032      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2033    
2034    checkpoint50a_post
2035    o Bug fix for merging between c50 and KPP.
2036      ikey was passed from thermodynamics to kpp_calc via
2037      common block rather than being recomputed in kpp_calc,
2038      in contradiction with new key itdkey.
2039      New key ikppkey created, and tamc.h headers updated.
2040    
2041    checkpoint50
2042    - 2nd step of merge with ecco-branch:
2043      merge changes in ecco-branch back into main trunk
2044    - bug fix in find_alpha
2045    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2046    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2047    - merged some sliced AD support routines
2048    
2049    checkpoint49
2050    merged from ecco-branch:
2051    o exf:
2052      - Enable initialisation of forcing fields to constant
2053        (runtime) values.
2054      - in exf_getffields.F
2055        Reduce i-/j-loop to interior domain, discarding overlaps.
2056        That also fixes wrong TAF-key computations for key_1, key_2
2057        with bulf formulae.
2058      - exf_init.F modify #ifdef for exf_init_evap
2059      - exf_getffieldrec.F, ctrl_getrec.F
2060        The following INT-usages are not safe:
2061          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2062          fldcount = int(fldsecs/fldperiod) + 1
2063        and were modified.
2064    o autodiff: checkpoint_lev...
2065      - updated storing for bulk formulae (some arrays were missing)
2066      - added state for seaice package
2067      - synchronized with main branch
2068    o DIVA:
2069      Modif.s in
2070      - the_main_loop.F
2071      - the_model_main.F
2072      and added cost_final_restore.F cost_final_store.F
2073      o With these changes, it is possible to fully separate
2074        the first forward run to compute the cost function (mdthe_main_loop)
2075        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2076        into separate model executions.
2077        This enables better tuning of DIVA to given queue sizes.
2078      o Loss of cost function value in consecutive DIVA runs is
2079        fixed by storing to 'costfinal' file.
2080      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2081        beginning/end of adjoint integration is accounted for.
2082      The current changes apply to TAF-1.4.26.
2083      TAF has one remaining bug, requiring one manual change
2084      (see MITgcm manual).
2085    o cal: synchronized between MAIN and ecco-branch
2086    
2087    checkpoint48i_post
2088    o Changes to restore differentiability of code w.r.t. previous tag
2089      (mostly adding new routines to make list and replacing
2090      pressure by totPhiHyd).
2091    o Updated and merged grdchk package
2092      - has both ADM and TLM checks
2093      - works for single- and multi-proc.
2094      - output cleaned
2095      - worked successfully for parallel DIVA
2096    o genmake:
2097      - Adding -platform=SP4
2098      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2099    o Modif. for DIVA:
2100      ctrl_unpack should not be called in intermediate DIVA interval.
2101      (similar thing would apply for active files such as
2102      tbar, sbar, psbar, which should not be reinitialised;
2103      only relevant for ecco-branch)
2104    
2105    checkpoint48h_post
2106    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2107    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2108    o Added SEAICE_initialHEFF to pkg/seaice
2109    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2110    
2111    checkpoint48g_post
2112    --- EOS:
2113    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2114      store total Potential in totPhyHyd for diagnostics & EOS.
2115    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2116    --- Pressure/geopotential gradient:
2117    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2118    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2119      ( changes results of global_ocean_pressure )
2120    o NLFS + z-coord.: add eta*Rho' contribution.
2121    o accurate phiHyd when using interface-W at the middle between 2 centers
2122     ( changes results of ideal_2D_oce )
2123    o includes r* 2nd term in potential gradient.
2124    
2125    checkpoint48f_post
2126    Merging from release1_p12:
2127    o Modifications for using pkg/exf with pkg/seaice
2128      - improved description of the various forcing configurations
2129      - added basic radiation bulk formulae to pkg/exf
2130      - units/sign fix for evap computation in exf_getffields.F
2131      - updated verification/global_with_exf/results/output.txt
2132    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2133      (SBO) core products, including oceanic mass, center-of-mass,
2134      angular, and bottom pressure (see pkg/sbo/README.sbo).
2135    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2136      to avoid negative values in shallow regions.
2137      - updated verification/natl_box/results/output.txt
2138      - updated verification/lab_sea/results/output.txt
2139    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2140    o Added useSingleCpuIO option (see PARAMS.h).
2141    o Updated useSingleCpuIO option in mdsio_writefield.F to
2142      work with multi-field files, e.g., for single-file pickup.
2143    o pkg/seaice:
2144      - bug fix in growth.F: QNET for no shortwave case
2145      - added HeffFile for specifying initial sea-ice thickness
2146      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2147    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2148      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2149    o pkg/seaice:
2150      - adjoint-friendly modifications
2151      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2152    
2153    checkpoint48e_post
2154    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2155    o dynamics: change definition of computational domain & adapt mom_fluxform
2156      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2157    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2158        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2159        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2160        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2161        inverted_barometer solid-body.cs-32x32x1
2162      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2163    
2164    checkpoint48d_post
2165    o in preparation for r*:
2166     a) use pre-computed gradient of hydrostatic potential:
2167        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2168     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2169        => affects results of glob_oce_pressure (different truncation error)  
2170      update output.txt of ideal_2D_oce & global_ocean_pressure
2171    
2172    checkpoint48d_pre
2173    o in preparation for r*:
2174      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2175      pass the 2 comp. of the grad. as arguments to momentum S/R.
2176      but for the moment, only used if it does not change the results.
2177    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2178    
2179    checkpoint48c_post
2180    Modifications in treatment of initial flux forcing controls
2181    to avoid extra storing of flux fields.
2182    
2183    checkpoint48c_pre
2184    o Added tidal_basin_2d experiment (currently 1D!)
2185    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2186    
2187    checkpoint48b_post
2188    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2189     (modification to pressure gradient not yet implemented)
2190    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2191      (for U & V) that are used for vertical advection of momentum.
2192    
2193    checkpoint48a_post
2194    o In preparation for r*, use temp. array to compute vertical transport
2195       in flux-form momentum pkg. => change results of few test-exp.
2196      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2197                        lab_sea, natl_box & plume_on_slope
2198    
2199    checkpoint48
2200    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2201    
2202    checkpoint47j_post
2203    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2204    o moved adexch from forward_step to addummy_in_stepping
2205    o added exch in ctrl_map_...
2206    o aveFreq.=0. at end of cost_final to avoid overwrite in
2207      reverse checkpointing loop
2208    o Yet more changes in gmredi:
2209      * adgmredi_calc_tensor
2210        avoiding all recomputation of gmredi_slope_limit
2211      * adgmredi_x/y/rtransport
2212        added flag for excessive storing to avoid recomp. of
2213        u/v/rtans, dTdx/y/z
2214        -> this is not really necessary and very memory-consuming
2215      * adgmredi_slope_psi:
2216        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2217      * gmredi_slope_limit
2218        re-activated full calculation of taperfct for case 'ac02'
2219    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2220    
2221    checkpoint47i_post
2222    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2223    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2224      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2225    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2226    o gmredi: fix few bugs.
2227    
2228    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2229    This will be a good checkpoint to plug into the ecco-branch.
2230    o few modif.'s to get latest version adjointed
2231      (mainly kick out code in ini_linear_phisurf)
2232    o modif's to run adjoint with exactConserv
2233    o case GM_BOLUS_ADVEC should be cleaned
2234      S/R gmredi_slope_psi should be cleaned
2235    o verification/carbon now has exactConserv=.TRUE.
2236    
2237    checkpoint47g_post
2238    o time-average AIM output: becomes independent from statvars time-average
2239      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2240    o After TAF bug fix:
2241      Tested adjoint of gmredi package.
2242      Tests were done with checkpoint47 rather than with latest
2243      checkpoint47f_post since the latter is broken for the adjoint
2244      verification/carbon/ contains both ADM and TLM gradient checks.
2245    Here they are, before they get changed/lost/stolen.
2246    Mostly modif.'s to fix numerical sensitivities.
2247    Gradient checks OK for
2248    - GM_taper_scheme:
2249      * clipping
2250      * ac02
2251      * linear
2252      * glw91
2253      * dm95
2254      * ldd97
2255    - GMREDI_OPTIONS:
2256      * GM_VISBECK_VARIABLE_K
2257      * GM_NON_UNITY_DIAGONAL
2258      * GM_EXTRA_DIAGONAL
2259      * GM_BOLUS_ADVEC
2260    in conjunction with data.gmredi parameters to be checked in
2261    in a few minutes under verification/carbon/code/
2262    
2263    checkpoint47f_post
2264    Merging from release1_p10:
2265    o modifications for using pkg/exf with pkg/seaice
2266      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2267        and SEAICE_EXTERNAL_FLUXES
2268      - pkg/exf CPP options EXF_READ_EVAP and
2269        EXF_NO_BULK_COMPUTATIONS
2270      - usage examples are Experiments 8 and 9 in
2271        verification/lab_sea/README
2272      - verification/lab_sea default experiment now uses
2273        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2274    
2275    checkpoint47e_post
2276    o created a tag prior to creating a branch
2277    
2278    checkpoint47d_post
2279    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2280      at the bottom boundary had an erroneous half slip boundary condition
2281    o added bottom drag and no slip boundary condition capabilities to
2282      oceanic pressure coordinates code
2283    o added new verification experiment global_ocean_pressure, this experiment is
2284      also described in the tutorial section of the manual
2285    checkpoint47d_pre
2286    
2287    checkpoint47c_post
2288    o Added a verification experiment for a global cubed-sphere ocean run
2289      -  verification/global_ocean.cubed32x32x30
2290      -  uses pkg/therm_seaice and pkg/bulk_forcing
2291    
2292    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2293    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2294      when using P-coordinate; only implemented for atmospheric config.
2295    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2296      NOTES: requires option NONLIN_FRSURF to be "#define".
2297    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2298    
2299    checkpoint47b_post
2300    Merging from release1_p9:
2301    o pkg/seaice
2302      - removed GOTO's and added taf directives
2303      - double precision constants to reduce the g77 (Linux)
2304        to F77 (SGI) differences reported in release1_p8
2305    o tools/genmake
2306      - added SGI options
2307    o verification/testscript
2308      - updated to that of checkpoint47a_post
2309    o verification/global_ocean.90x40x15/input/eedata
2310      - modified for SGI f77 compatibility
2311    o verification/lab_sea
2312      - added description of sea-ice model
2313      - added missing matlab routines
2314      - added test of thermodynamics parallelization
2315    
2316    checkpoint47a_post
2317    o new pkg: aim_v23
2318     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2319       for now, keep the same surface forcing as before.
2320     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2321     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2322     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2323    o add diagnostic of surface correction term in monitor output
2324    
2325    o bulk_force and therm_seaice
2326    - Two packages:  bulk_force (Bulk forcing)
2327      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2328    - Earlier integration from Stephaine Dutkiewicz
2329      and Patrick Heimbach.
2330    - Two ifdef statements for compile time,
2331       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2332    
2333    checkpoint47
2334    differentiable version of checkpoint46n_post
2335    o bug fix in quasihydrostaticterms
2336    o * "clean" adjoint code (in terms of extensive recomputations)
2337        can now be obtained for all GMREDI options (i.e. for
2338        - GM_VISBECK_VARIABLE_K
2339        - GM_NON_UNITY_DIAGONAL
2340        - GM_EXTRA_DIAGONAL
2341        - GM_BOLUS_ADVEC )
2342      * However, wrong gradient check problem remains unsolved.
2343      * New CPP options have been introduced for different
2344        tapering schemes
2345    o external_fields_load now part of differentiation list
2346    o pressure needs multiple storing;
2347      would be nice to have store_pressure at beginning or
2348      end of forward_step, e.g. by having phiHyd global (5-dim.)
2349      (NB: pressure is needed for certain cases in find_rho,
2350      which is also invoked through convective_adjustment).
2351    o recomputations in find_rho for cases
2352     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2353    o #define ATMOSPHERIC_LOADING should be differentiable
2354    o ini_forcing shifted to begining of initialise_varia
2355    o Incorporating QNVS line search routines into MITgcm
2356      (this is separate code, and therefore not under pkg)
2357      lsopt/, optim/
2358    o Updated verification/carbon/
2359      - #define GM_VISBECK_VARIABLE_K
2360      - GM_taper_scheme    = 'ldd97'    
2361    
2362    checkpoint46n_post
2363    Merging from release1_p8:
2364    o verification/natl_box:
2365      updating new external_fields_load routine
2366    o New package: pkg/seaice
2367      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2368      The sea-ice code is based on Hibler (1979-1980).
2369      Two sea-ice dynamic solvers, ADI and LSR, are included.
2370      In addition to computing prognostic sea-ice variables and diagnosing
2371      the forcing/external data fields that drive the ocean model,
2372      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2373      The implied surface heat flux is then stored in variable
2374      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2375      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2376      non-local transport term.  Because this call precedes model
2377      thermodynamics, temperature under sea-ice may not be "exactly" at
2378      the freezing point by the time theta is dumped or time-averaged.
2379      N.B.: fairly large differences in accuracy occur across
2380            different platforms/compilers; comparison between
2381            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2382            generated output gives:
2383       T           S           U           V
2384      C D M    c        m  s        m  s        m  s        m  s
2385      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2386      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2387      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2388    
2389      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2390    o GAD:
2391      - generated new common blocks to account for call of
2392        same gad routines with differing traceridentities
2393        (needed to modify tracerIdentity indices in GAD.h)
2394      - generated separate common blocks for case useCubedSphereExchange
2395        (Department of Futurology)
2396      - parameter lists to gmredi_?transport: added tracerIdentity
2397      - added new key indices to tamc.h
2398    o external_fields_load:
2399      - added this routine to TAF list
2400      - needed to make some common blocks global and additional storing
2401        along the same lines as exf package (checkpoint_lev?_directives.h)
2402    o exf:
2403      updated external forcing package
2404      - bug fixes carried over from ecco-branch
2405        (missing OBCS_OPTIONS.h in two routines)
2406      - enable easy to use "no forcing".
2407      - added exf I/O for atmospheric loading
2408      - added exf I/O for runoff data
2409      - transfered scaling between exf <-> MITgcm to exf namelist
2410    o Adding new verification experiment global_with_exf.
2411      This verification experiment is almost identical to the
2412      global_ocean.90x40x15 experiment, except that it uses
2413      the exf (and cal) package instead of the
2414      external_fields_load routine (cf README file).
2415    
2416    checkpoint46m_post
2417    o modified testscript to return -- when there are no lines of "%MON" output
2418    o added new flag "quasiHydrostatic" for QH mode
2419      and new routine quasihydrostaticterms()
2420    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2421      New routine: mom_u_coriolis_nh()
2422    o fixed sign of non-hydrostatic metric terms in u and v equations.
2423      Depend on correct sign of gravitySign.
2424    o added work.pc* to .cvsignore in aim directories using ifc
2425    o introduced flag for controllin non-hydrostatic metric terms
2426    o removed gravitySign from PARM04
2427    o switched to g77/ifc from pgf77 in aim experiments
2428    
2429    checkpoint46l_post
2430    o made convective adjustment work with pressure coordinates:
2431     - changed the direction of k-loop in convective_adjustment.F for the
2432       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2433     - adjusted the reference pressure k-index in convective_adjustment.F
2434     - adjusted the convection condition in convect.F (in analogy to
2435       calc_ivdc.F)
2436     - convective_adjustment no longer computes anything on the halos
2437     - removed the warnings about negative salinity from find_rho.F and
2438       find_alpha.F; instead the new routine look_for_neg_salinity, called
2439       at the beginning of find_rho, find_alpha, and find_beta, does a
2440       check of the entire slice, if CPP-option
2441       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2442    checkpoint46l_pre
2443    
2444    checkpoint46k_post
2445    o fixed the verification/global_ocean.90x40x15 experiment:
2446     - new bathymetry (the world according to A., JMC, and M.)
2447     - new initial fields and forcing fields (*.bin files)
2448     - new POLY3.COEFFS (for the next release one should switch to a full
2449       equation of state: JMD95P or MDJWF)
2450     - fixed several errors and redundancies in the data file
2451     - experiment uses looped cells
2452     - added matlab directory with diagnostic scripts for plotting of output
2453    
2454    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2455     - read AIM physics parameters from a file (data.aimphys)
2456     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2457    
2458    checkpoint46j_post
2459    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2460    o move wVel computation at the end of the time step, in S/R integr_continuity
2461    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2462    o update timeave pkg for wVel diagnostic.
2463    checkpoint46j_pre
2464    
2465    checkpoint46i_post
2466    o Clean up AIM package (and keep the results unchanged):
2467      include CPP_OPTION and use IMPLICT NONE in all routines ;
2468      declare all the variables _RL ; use _d 0 for all numerical constants.
2469      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2470    
2471    checkpoint46h_post
2472    o cleaned up the use of rhoNil and rhoConst.
2473      - rhoNil should only appear in the LINEAR equation of state, everywhere
2474        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2475        and the dynamical equations are all divided by rhoConst
2476    o introduced new parameter rhoConstFresh, a reference density of fresh
2477      water, to remove the fresh water flux's dependence on rhoNil. The default
2478      value is 999.8 kg/m^3
2479    o cleanup up external_forcing.F and external_forcing_surf.F
2480      - can now be used by both OCEANIC and OCEANICP
2481    checkpoint46h_pre
2482    
2483     Added code to convert surface volume flux (fresh water) into
2484     a mass flux when using P coordinates in the ocean (OCEANICP).
2485     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2486    
2487    checkpoint46g_post
2488    o Include a new diagnostic variable phiHydLow for the ocean model
2489      - in z-coordinates, it is the bottom pressure anomaly
2490      - in p-coordinates, it is the sea surface elevation
2491      - in both cases, these variable have global drift, reflecting the mass
2492        drift in z-coordinates and the volume drift in p-coordinates
2493      - included time averaging for phiHydLow, be aware of the drift!
2494    o depth-dependent computation of Bo_surf for pressure coordinates
2495      in the ocean (buoyancyRelation='OCEANICP')
2496      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2497        Theta, Salinity, and Pressure in the parameter list. This routine is
2498        presently contained in find_rho.F. This routine does not give the
2499        correct density for 'POLY3', which would be a z-dependent reference
2500        density.
2501    o cleaned up find_rho
2502      - removed obsolete 'eqn' from the parameter list.
2503    o added two new verification experiments: gop and goz
2504      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2505    checkpoint46g_pre
2506    
2507    checkpoint46f_post
2508    o Enable tangent linear (forward mode) gradient checks:
2509      - extended active file handling to g_... files
2510      - added TANGENT_SIMULATION to theSimulationMode
2511      - extended grdchk package accordingly
2512    o added tangent linear setup in verification/carbon/code_ftl
2513    o added adjoint setup in verification/front_relax/code_ad
2514    
2515    checkpoint46e_post
2516    o Added new equation of state -> MDJWF
2517      - EOS of McDougall et al., 2002, JAOT, submitted
2518      - caveat: the equation of state is only valid for a smaller (more
2519        realistic?) range of values than JMD95P/Z and UNESCO
2520      - added masks to the calculation of pressure in store_pressure
2521      - added more check values for density in check_eos (ini_eos.F), some of
2522        the old check values are out of the range of the MDJWF-eos, so don't
2523        expect perfect matches for those
2524    checkpoint46e_pre
2525    
2526    checkpoint46d_post
2527    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2528      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2529      case of pressure coordinates. eosType='JMD95Z' in
2530      combination with buoyancyRelation='OCEANICP' now causes an error.
2531    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2532      in find_alpha/beta.
2533    checkpoint46d_pre
2534    
2535    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2536      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2537    
2538    checkpoint46c_post
2539    o Changes necessary for ocean in p-coordinates
2540     -  Added new buoyancy relation = 'OCEANICP'
2541     -  Added new parameters = gravitySign (this used to be contained inside
2542        the factor dRdZ which I added when we first switched to R coordinates).
2543     X GM/Redi is not compatible (yet)
2544     X bottom drag and no-slip need to be debugged.
2545    checkpoint46c_pre
2546    
2547    checkpoint46b_post
2548    o Added new equation of state -> JMD95Z and JMD95P
2549      - EOS of Jackett and McDougall, 1995, JAOT
2550      - moved all EOS parameters into EOS.h
2551      - new routines ini_eos.F, store_pressure.F
2552    o Added UNESCO EOS, but not recommended because it requires
2553      in-situ temperature (see JMD95)
2554    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2555      unesco.f to be used with POLY3
2556    checkpoint46b_pre
2557    
2558    checkpoint46a_post
2559    o Added (atmospheric) pressure loading
2560      - new field in FFIELDS.h, etc...
2561      - new cpp flag ATMOSPHERIC_LOADING
2562    o Changed hFacC to _hFacC in calc_phi_hyd.F
2563    o Added SHORTWAVE_HEATING to some files for consistency
2564    checkpoint46a_pre
2565    
2566    checkpoint46
2567    further merges from release1_p5
2568    o new ctrl package
2569      - adopted from ECCO environment to enable optimization
2570      - added Eliassen Palm fluxes to controls
2571    o added Eliassen Palm flux controls to gradient check package
2572    o cost package
2573      - Compatible with new ctrl package
2574      - added Eliassen Palm cost hooks
2575      - modif's of existing cost functions
2576    o Adjoint-related bug fixes in kpp:
2577      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2578      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2579    o autodiff package
2580      - flow directives:
2581        + new for S/R do_the_model_io
2582        + enhanced for S/R checkpoint
2583        + new gmredi.flow
2584      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2585        disable adcommon.h/g_common.h by default.
2586      - fixed problem for adjoint of global_max
2587    o modified verification/carbon/
2588    o New setup for adjoint of global_ocean
2589    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2590    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2591    o incorporated hooks for sponge layer code (external_forcing.F)
2592    
2593    checkpoint45d_post
2594    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2595    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2596      (affects plume_on_slope "cg2d" output)
2597    o add new parameter deltaTfreesurf for free-surface time stepping
2598    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2599    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2600    o change phiMin in exp1 (to agree with documentation)
2601    o add new flags:
2602     - T,S forcing inside/outside Adams-Bashforth
2603     - turn off temp,salt advection and/or forcing
2604     - for each tracer, define internal flag for multiDimAdvection & A-B
2605    o monitor: change definition of KE to check conservation of Energy
2606    
2607    checkpoint45c_post
2608    o Removed f90 comments ("!")
2609    o Modified initialisations to enable exf package for MITgcm
2610      (without invoking ECCO_PACKAGE).
2611    o modifications to gradient check package (Martin Losch)
2612      - enable centered differences
2613      - modified format of standard output
2614    
2615    checkpoint45b_post
2616    o cleaned exchange calls in cg2d
2617    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2618    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2619      to configure barotropic setup (Martin Losch)
2620    o moved some initialisations within bi,bj loop in dynamics
2621      (TAF flow dependency)
2622    o in initialise_varia, moved call packages_init_variables
2623      before convective_adjustment_init
2624      (corresponding adjustment of TAF tape initialisation).
2625    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2626    
2627    checkpoint45a_post
2628    o compute Rho over the whole domain (extend iMin,jMin indices)
2629    o specific exchange for X-slice domain (case Ny=1)
2630    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2631    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2632    
2633    checkpoint44h_post = checkpoint45
2634    o Fix to restore differentiability:
2635      place at which packages_init_variables is called in
2636      initialise_varia is crucial for reverse control flow.
2637    o modifications in GMRedi to enable stable adjoint
2638      (corresponding modif's in thermodynamics, dynamics)
2639    o added missing hook for sponge layer code in external_forcing
2640    o modified test cost functions
2641    o storing in gad_advection (plus removal of write(0,*)!
2642    o missing headers TR1.h added in convective_adjustment routines
2643    o errorMessageUnit set non-equal zero in eeboot
2644      (conflict on some platforms, e.g. IBM SP3)
2645    o modified carbon verif.
2646    
2647    checkpoint44h_pre
2648    o vertical grid option: allow to put the Interface at the middle between
2649      2 cell-centers ; replace delZ in pkg/kpp by drF.
2650    o GM Advective form: Tracers are advected using the residual transport (=
2651      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2652    
2653    checkpoint44g_post
2654    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2655      results) ; ifdef missing in thermodynamics.F
2656    
2657    checkpoint44f_pre,checkpoint44f_post
2658    o added PTRACERS package
2659      This allows an arbitrary number of passive tracers to be integrated
2660      forward simultaneously with the dynamicaly model.
2661      + Implemented so far:
2662        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2663        - I/O and checkpointing
2664        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2665      + Not implemented so far:
2666        - KPP
2667        - OBCS
2668      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2669        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2670        line in data.pkg.
2671      + This package is disabled by default since it increases storage.
2672    
2673    
2674    o testscript: added -cleanup option
2675    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2676                 b) enable to filter 2D fields.
2677    
2678    checkpoint44e_pre,post
2679    o re-wrote convective adjustment to use pre-calculated weights
2680      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2681      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2682      Original calls to convect() still in place.
2683    
2684    chkpt44d_pre,post
2685    o added missing EXCLUDE_MONITOR flags
2686    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2687      (incompatible typ in MIN/MAX expressions caused problems
2688      on IBM SP3)
2689    o in genmake added variable MAKEDEPEND
2690      plus resetting for case SunOS
2691    o added timer_stats.c routine for IBM SP3
2692    o removed variables in dynamics
2693    !!! I forgot to create tag chkpt44d_pre !!!
2694    !!! But chkpt44d_pre = chkpt44c_post    !!!
2695    
2696    o real fresh water flux implemented with non-linear free-surface.
2697    
2698    chkpt44c_pre,post
2699    o few fix (mask in shap_s2, EmPmR in external_field_load,
2700      USE_NATURAL_BCS in solve_for_P);
2701    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2702    
2703    checkpoint44b_pre/_post
2704    o merge of relevant stuff from the ecco-branch:
2705      - genmake: removed $S64 overwrite for case SunOS
2706      - pkg/exf: update and corrections for field swapping and obcs
2707      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2708                  harmonized between ECCO and MITgcm
2709      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2710                      updated checkpointing_lev... lists for obcs
2711      - model/src: minor changes in forward_step, plot_field
2712                   added directive for divided adjoint in the_main_loop
2713      - pkg/mdsio: added mdsio_gl_slice
2714    
2715    o check parameters & config (chkpt44a_pre,post)
2716    o OBC and NonLin_FrSurf.
2717    
2718    checkpoint44
2719    o fix bug in mom_vi_del2uv
2720    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2721    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2722    o update AIM experiments (NCEP input files)
2723    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2724    o added some stuff for AD
2725    
2726    checkpoint43
2727    o added two new advection tests
2728    o added global 4x4 degree ocean test
2729    o added test of H&S94 with free surface on cube
2730    o some final mods for gradient check, adjoint,...
2731    
2732    checkpoint42
2733      Fixed AD-related problems:
2734    o Store directives up-to-date with re-arranged Adams-Bashforth
2735      (mainly thermodynamics.F)
2736    o New store directives for multi-dim. advection schemes
2737      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2738      * new common block and key passkey
2739      (mainly gad_advection.F)
2740    o Modified store directives for split of dynamics/thermodynamics
2741      for the case ALLOW_KPP
2742    o Cleaned argument list for timestep_tracer.F
2743    
2744    checkpoint41
2745    o re-formatted/added comments in prologues of key subroutines
2746      to work with protex
2747    
2748    checkpoint40
2749    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2750    o added FLT (floats) package from Arne along with demo. experiment
2751    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2752      implementation of forward-in-time forcing terms
2753    o more mods for non-linear free-surface including new variable
2754    o modified multi-dim method to work on cube
2755    o bug fix in KPP (from DM)
2756    
2757    checkpoint40pre9
2758    o added DST advection schemes
2759    o fix MPI bug on SGI's
2760    o modifications for non-linear free-surface
2761    o fixed conditionals for fixed flow/passive tracer only mode
2762    o added tension/strain form of stress tensor
2763    o changes to commenting of arguments for TAF/TAMC
2764    o added/updated many matlab scripts
2765    o added multi-dimensional advection method for tracers
2766      
2767    checkpoint40pre8
2768    o new package rw/
2769      Added method for dumping intermediate local arrays:
2770      mdsio_writetile - same as mdsio_writefield except works from inside
2771                        bi,bj loop
2772      mdsio_writelocal - same as mdsio_writetile except works for local
2773                         arrays
2774      write_local_r? - higher-level wrapper for mdsio_writelocal
2775      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2776      Example given at end of mom_vecinv.F that dumps some local arrays.
2777    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2778      control flux-form versus vector invariant code.
2779      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2780      or genmake -DISABLE ...
2781    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2782      (additional storing is now needed for case vecinv;
2783      currently nothing implemented to switch this storing off
2784      in case fluxform is used since no CPP flag available).
2785    
2786    checkpoint40pre7
2787    o bug fix in dynamics.F
2788      calc_viscosity called before k=1,Nr loop.
2789    o added some #ifdef's ALLOW_PASSIVE_TRACER
2790    o cleaned initialisations in ctrl_map_ini
2791      related to TAF
2792    
2793    checkpoint40pre6
2794    o split dynamics into thermodynamics & dynamics
2795    o corresponding split of calc_diffusivity into
2796      calc_diffusivity, calc_viscosity
2797      (kpp_calc_diff, kpp_calc_visc).
2798    o Added diffkr, kapgm to control variables
2799    o bug fix in gmredi_slope_limit for ldd97
2800    
2801    checkpoint40pre5
2802    o proper initialization of Adams-Bashforth time stepping
2803      + uses forward step for very first step of model (iter=0)
2804    o re-generated *all* output since almost all output is modified by this
2805      change (sorry but we've been putting this one off for about 2 years)
2806      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2807        *not* regenerated since they are already out of date and I don't
2808        want to create the impression that they are suddenly working.
2809    o removed KAP stuff for DEC's
2810    o modified/added many .cvsignore files in */code and */input
2811    o added new expt "solid-body.cs-32x32x1"
2812      + this uses an alternative form of ini_curvilinear_grid.F which
2813        is not necessarily any better than the current one...
2814    
2815    checkpoint40pre4
2816    o added re-initialisations of utrans,vtrans,rtrans in
2817      calc_common_factors which are crucial for TAF.
2818    o extended iMin,jMin range for calc_common_factors,
2819      calc_diffusivity
2820    o added option ALLOW_PASSIVE_TRACER
2821    o a few minor updates and fixes
2822    
2823    checkpoint40pre3
2824    o created calc_gtr1.F for gad package
2825    o split the_main_loop and re-introduced forward_step
2826    o some recomputations of nIter0 for TAMC
2827    
2828    checkpoint40pre2
2829    o Updated to latest branch of AJA, JMC
2830    o Added gradient check package
2831    o Added routines for passive tracer handling
2832    o Added carbon sequestration sensitivity experiment
2833    
2834    checkpoint39
2835     o Modifications and fixes to support TAMC
2836       (mainly missing or wrong directives)
2837     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2838       in addummy_in_stepping
2839     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2840     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2841     o Included following packages:
2842       cal: calendar
2843       exf: external forcing
2844       ecco: essential routines to control use of cal, exf
2845             (NB: this is not the full ECCO environment)
2846     o disabled some packages by default in genmake
2847    
2848    checkpoint38
2849     o see notes_c37_adj.txt
2850     o corrected wrong layer index in external_forcing_t
2851     o replaced the_main_loop/forward_step by the_main_loop
2852     o removed forceoutput from write_state
2853       (replaced criteria for initial/final state)
2854     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2855    
2856    checkpoint37
2857     o mdsio.F routine split and packaged in pkg/mdsio
2858       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2859        used unless genmake -disable=mdsio)
2860     o allow a more precise surface-geopotential gradient for the atmosphere
2861       taking into account the change in space of Alpha (=1/rho) at the surface.
2862     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2863       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2864     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2865       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2866       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2867     o Time-Average diagnostics defined as a pseudo package "timeave".
2868     o pickup files : old pickup (before c35) did not work with new code (c35
2869       and after) unless activating 2 commented lines in initialise-varia.
2870     o Non-Hydrostatic pickup file Pb fixed.
2871     o bug with Rigid-lid version (since c35) fixed.  
2872    
2873    checkpoint36
2874     o implement Crank-Nickelson barotropic time-stepping
2875     o recover Time-Average diagnostics
2876     o fix Pb in checkpoint (PR#19)
2877     o AIM become a standard package ; clean unused CPP_kees
2878    
2879    checkpoint35
2880     o subtantial rewrite of dynamics.f
2881     o allows staggered time-stepping
2882     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2883     o added bottom drag (linear + quadratic)
2884    
2885    checkpoint34
2886     o Modified exchange routines for correct reverse simulation.
2887     o Added verification output to comply with bug fix in impldiff.F
2888       as of c33 (exp2, natl_box).
2889     o Corrected store directives in dynamics.F
2890     o Corrected array boundaries in impldiff.F
2891     o Corrected array dimensions in gmredi.
2892       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2893     o Added routine GLOBAL_SUM_INT to global_sum.F
2894     o Added mdsio_gl.F for ECCO purposes.
2895    
2896    checkpoint33
2897     o Fixed bug in lower BC in impldiff.F
2898     o Fixed confusion about units of forcing arrays in FFIELDS.h
2899       namely Fu,Fv,Qnet,Qsw,EmPmR:
2900       - Removed verification/natl_box/code/external_fields_scale.F
2901         (did not differ from that in model/src)
2902       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2903         (see FFIELDS.h for description)
2904       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2905         kpp_calc.F and kpp_transport_t.F
2906       - Removed model/src/external_fields_scale.F and calls to it
2907       - verification/natl_box uses flux data with "atmospheric" sign so
2908         a special version of external_fields_load.F is used to
2909         change the data as it's read in. This way, the arrays
2910         have the right units and signs at all times tha a user could
2911         possibly use them.
2912     o Corrected genmake to delete a temporary file during configuration
2913    
2914    checkpoint32
2915     o Scaling of forcing fields moved from external_forcing.F to
2916       external_fields_scale.F, called directly after loading fields.
2917     o Surface relaxation terms added to surface tendency fields in
2918       extra subroutine.
2919     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2920       fields.
2921     o Changes in GMRedi to comply with packaging structure.
2922     o Modifications and bug fixes in KPP package.
2923     o Verification experiment for KPP added (verification/nat_box/)
2924    
2925    checkpoint31
2926     o Packages interface brought in line with defined standard
2927       -> new routines packages_...F
2928       -> changes in initialise_fixed.F, initialise_varia.F
2929       -> enables initialisation interface for ECCO package
2930     o Rescaling of external forcing fields immediately after read
2931       (removed from external_forcing.F)
2932       -> new: surface_fields_scale.F
2933       -> affects ini_foorcing.F, external_fields_load.F
2934     o Computation of surface tendencies before tendency updates.
2935       -> new: external_forcing_surf.F
2936     o Change of variable names useGMRedi, useKPP, useECCO
2937     o Further changes in dynamics.F, impldiff.F for TAMC
2938     o Tested for experiments 0, 2, 4.
2939       - not yet tested for GMRedi.
2940       - not yet tested for KPP.
2941    
2942    checkpoint30
2943     o Updates for OBCs
2944     o New experiment for test OBCs (internal_wave)
2945     o New output.txt in verification/exp4/results/
2946     o Updates for KPP: calculation of viscosity corrected, new variables
2947       kpp_dumpFreq and kpp_taveFreq
2948     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2949       and entry for T90 in genmake
2950    
2951    checkpoint29
2952     o packaged KPP and GM/Redi
2953    
2954    checkpoint28
2955     o Corrected initialization of hFacMin for difference vertical coordinates
2956     o Modified calculation of partial cell thickness to more robust algorithm
2957     o config_summary.F: replaced write_1D_... by write_0D_...
2958       read_write.F: added subroutines write_0D_...
2959     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2960       included some initialisations required for TAMC.
2961     o routine calc_isoslopes: modified sqrt computation to make it
2962       differentiable for zero argument.
2963     o routines dynamics, impldiff:
2964       included store directives and tape key computations required for TAMC.
2965     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2966    
2967    checkpoint27
2968     o fixed calc_isoslopes() to so that cancellation of terms in tensor
2969       formulation works properly with variable resolution.
2970     o restructured the calling tree between the_model_main() and dynamics()
2971     o split initialise() into initialise_fixed() and initialise_varia()
2972     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
2973       in new routine ini_psurf()
2974    
2975    checkpoint26
2976     o moved some #ifdef in optional routines to encompass everything
2977       except the argument declarations. This was using up some memory.
2978     o fixed macros like _ADT to work with both versions of Linux cpp
2979     o cleaned up some unused and uninitialized variables
2980       (helps when debugging with strict compile options)
2981     o split up CPP_EEOPTIONS.h into options and macros
2982       (macros are now in eesupp/inc/CPP_EEMACROS.h)
2983     o patch for 2 processor JAM mode
2984    
2985    checkpoint25
2986     o updates for OBCs and NH
2987     o dramatically reduced memory usage
2988     o added "JAM" routines for use on Artic network
2989     o parameterization of convection by implicit vertical diffusion
2990     o added a diagnostic of convective index
2991     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
2992       (this is was partly for OBCs and NH but also in anticipation of
2993        an explicit free-surface option)
2994     o initial state input files for U and V
2995    
2996    checkpoint24
2997     o Removed some spurious "REAL"s
2998     o Updated KPP to latest version from JPL
2999     o Added a COS(latitude) in horizontal viscosity
3000    
3001    checkpoint23
3002     o Added del^4 diffusion for salt and temperature
3003     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3004    
3005    checkpoint22
3006     o Made many small changes: implicit none, format(i5), etc...
3007     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3008    
3009    checkpoint21
3010     o Introduced new I/O package that supports direct-access records (mdsio.F)
3011     o Split-up mid-level I/O routines
3012     o Updated input data for experiments 0,1,2,4 and 5
3013     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3014    
3015    checkpoint20
3016     o Tidied up open-boundaries some more
3017     o Added non-hydrostatic code
3018     o Fixed some input data
3019     o Modified MPI start-up to work in "coupled" context.
3020    
3021    checkpoint19
3022     o Tidied up directory structure for verification experiments.
3023     o Added new code for open boundaries.
3024     o Corrected advective terms near boundaries.
3025     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3026     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3027     o Split default parameters out of ini_parms.F into set_defaults.F.
3028    
3029    checkpoint18
3030     o Further changes for optional code generation with
3031       CPP - ugh!
3032    
3033    checkpoint17
3034     o Beginning to incorporating modularity
3035       for supporting atmos. and ocean configs.
3036     o Small changes for TAMC complinace
3037     o New ultra simple test case. Barotropic box
3038       configuration "exp0".
3039    
3040    checkpoint16
3041     o Minor changes to exchange routines to support
3042       accumulation in reverse mode. Adjoint of an
3043       assignment is an addition.
3044     o Changes to support compilation by TAMC (LR(1)
3045       syntax) and by g77 under Linux ( 72 character
3046       limit ).
3047    
3048  checkpoint15  checkpoint15
3049   Rewrote exchange routines to allow   Rewrote exchange routines to allow
3050   o General tile <-> tile connectivity.   o General tile <-> tile connectivity.

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