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revision 1.35 by jmc, Thu Feb 8 20:45:27 2001 UTC revision 1.730 by cnh, Wed Oct 11 19:30:01 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    
8    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
9    
10    checkpoint58p_post
11    o obcs: stop if obcs is used with useCDscheme = .true.
12    o shelfice:
13     - fix a sign error so that no slip at shelfice interface works
14     - remove stop for combination non-hydrostatic code and shelfice. That does
15       not mean, that the results are correct, but at least they are numerically
16       stable
17    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
18    o added adjoint exch routined for all exch*3d* routines
19      and updated flow directives
20    
21    checkpoint58o_post
22    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
23      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
24    o change controling S/R for writing pickup file (new S/R do_write_pickup)
25      and clean-up reading/writing of pickup files.
26    o fix local version of read/write pickup (NH part) in rotating_tank/code
27    o simplify EXCH interface:
28     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
29     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
30    o added the regrid package
31    o shelfice:
32     - add a simple boundary layer scheme to reduce noise
33     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
34    
35    checkpoint58n_post
36    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
37       local variable (not in common block).
38    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
39      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
40      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
41        to work with SingleCpuIO.
42    o add "_d 0" to real constant of pkg/cfc subroutines ;
43       update exp. cfc_exemple & tutorial_cfc_offline output files.
44    o multi-threading and IO:
45      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
46        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
47      - barrier before and after reading.
48      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
49      - avoid using MDS_WRITELOCAL for LAND pkg output.
50      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
51        common-block variables ; Allows multi-threading with master-thread IO.
52    o change default MAX_NO_THREADS from 32 to 4 ;
53      and stop cleanly when MAX_NO_THREADS is too small.
54    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
55    
56    checkpoint58m_post
57    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
58       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
59    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
60       keep global_ocean.90x40x15 (for AD testing) with former secondary test
61       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
62    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
63        add MITgcm_tutorials (= code + all the tutorials)
64    o ecco, option to compute cost for total ssh (mean+anom)
65    o consistent with addition of ptracer and ssh in pkg/profiles
66    o profiles: adding ptracer and ssh
67    o testreport: change multi-test output-file name
68      (from output.txt.{name} to output.{name}.txt)
69    o profiles: now ok for mutli-tiles case
70    o seaice: add 4 parameters for different advection schemes for area,
71      (effective) seaice thickness, enthalphy, and snow height. Their default
72      is the standard parameter SEAICEadvScheme
73    o calc_gw:
74     - add cosFacU in zonal viscous flux (harmonic.visc.).
75     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
76       of tutorial_plume_on_slope.
77    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
78    o calc_gw: true flux-form, account for horizontal grid spacing.
79      update rotating_tank results, but not plume_on_slope (affected at
80      truncation level, 11 digits).
81    
82    checkpoint58l_post
83    o calc_gw:
84     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
85     - remove side-drag for now (need to fix it); update plume_on_slope results.
86     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
87    o commit code to make SST/SSS weights spatially variable
88      (based on either variable in-situ or variable initial T/S weights)
89    o pkg/ecco:
90      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
91        now based on horizontally varying weights wthetaLev, wsaltLev
92      * cost_averagesflags now returns year indices in addition to day, month
93      * sflux balance is performed on annual basis
94        (sflxumm, sfluxmm2, bal_sfluxmm)
95      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
96        including separate counting and multipliers
97    o pkg/rbcs
98      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
99    
100    checkpoint58k_post
101    o testreport:
102     - always build in dir. "build" (if not there, mkdir build instead of building
103       & running in input)
104     - run in dir run (if it exists), in build otherwise.
105     - call prepare_run (if input/prepare_run exists)
106     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
107    o pkg/exf modifications to interpolation and rotation routines for more
108       reasonable treatment of North Pole singularity: for tracers North Pole
109       value is set to northernmost zonal-mean value, for zonal velocity it is
110       set to zero, and for meridional velocity it is set to northernmost value.
111    o pkg/exf/exf_check_range.F
112     - add tile index to diagnostics and move stop statement to the very
113       end of the routine.
114    o pkg/diagnostics: (diagnostics_main_init.F)
115      define title of isomorphic variables according to the current config.
116    o pkg/thsice with pkg/seaice dynamics:
117    - fix domain of computation (interior only, required for exf) and do exchanges
118    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
119    o towards a standard way of dealing with multi-threading in MONITOR
120      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
121    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
122       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
123    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
124    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
125    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
126       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
127    o tracer advection:
128     - clean-up and simplify calc_common_factors.F
129     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
130       advection subroutine (but still not used within DST advection S/R)
131    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
132    
133    checkpoint58j_post
134    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
135      from file (collects calls previously in FORWARD_STEP)
136    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
137    o adjoint store dir. adjusted accordingly
138    o genmake2
139      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
140    
141    checkpoint58i_post
142    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
143      on wind stress (SEAICEstressFactor defaults to 1.)
144    o Total number of Timers is finite (<=40): comment out 2 non-essential one
145      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
146    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
147      on CS-grid: no longer loosing mass.
148    o exf & curvilinear-grid: no longer modify longitude xC & xG.
149    o pkg/ggl90: fix sloppy output and fix a bug
150    o pkg/seaice: added SEAICEuseEVPpickup parameter
151      - Set to false in order to start EVP solver with
152        non-EVP pickup files when using SEAICEuseEVP
153      - fix sign error in diffusion in seaice_calc_rhs
154    
155    checkpoint58h_post
156    * Modifications for bottom topography control
157      o replace hFacC by _hFacC at various places
158      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
159      o add non-self-adjoint cg2d_nsa
160      o update autodiff support routines
161      o re-initialise hfac after ctrl_depth_ini
162      o works for 5x5 box, doesnt work for global_ocean.90x40x15
163    * Adding verification for 5x5 box (4-layer) bottom topography control
164    
165    checkpoint58g_post
166    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
167       used for mean seasonal cycle, mean diurnal cycle); add an example
168       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
169    o pkg/ggl90:
170      - add parameter (minimum surface kinetic energy)
171      - fix bug (avoiding division by zero)
172    o couple pkg/thsice to pkg/seaice:
173      - modify advection in seaice to accomodate new scalar fields to be advected
174      - only muliDimAdection scheme work with seaice/thsice
175      - mapping of thsice-variables to seaice-variables, back and forth
176      - does not break the verification experiments, but does not give the
177        desired results either
178    o pkg/seaice
179      - make (default) second order advection a bit less confusing?
180    
181    checkpoint58f_post
182    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
183      to pkg/seaice):
184      - new routines thsice_map_exf and thsice_get_exf provide the interface
185      - add an additional formal parameter to thsice_solve4temp
186    o pkg/exf:
187      - add new fields wspeed, snowprecip (to be able to couple to thsice)
188      - correct Stefan-Boltzmann constant
189      - new parameter for longwave surface emittance
190      - separate some stuff from exf_bulkformulae into new routines  
191        exf_radiation, exf_wind
192      - add new parameters and constants: longwave emissivity for ocean, ice
193        and snow, evaporation parameters over ice
194      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
195        either wind from stress or stress from wind
196    o pkg/thSIce:
197    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
198    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
199       and THSICE_CALC_THICKN
200    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
201    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
202      to make debugging easier.
203    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
204    o pkg/bulk_force:
205      - clean-up comments and parameters ;
206      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
207    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
208      generate new output for test-experiment: aim.5l_cs.thSI
209    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
210      testreport accordingly
211    
212    checkpoint58e_post
213    o SEAICE_CGRID adjoint done
214    o R_STAR adjoint implemented.
215      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
216      * need to sort out init. of h0facc, etc.
217    o Make pkg/profile fully independent of ecco,cost, etc. stuff
218      to be able to use it in pure forward.
219    
220    checkpoint58d_post
221    o upgrade simple test-experiment to tutorial example:
222     step.1: duplicate the experiment and (step.2) will remove the old copy.
223      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
224      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
225      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
226      tutorial_global_oce_biogeo    <- copy of dic_example
227      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
228      tutorial_plume_on_slope       <- copy of plume_on_slope
229      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
230      tutorial_global_oce_optim     <- empty for now (David ?)
231      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
232     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
233    o correct a sign problem in cost_scat.F
234    o obcs and ptracers: fix boundary conditions for advections schemes
235      with larger stencil
236    o thsice adjoint: start
237    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
238      completeness
239    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
240      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
241    o ptracers adjoint:
242      * avoid extensive recomputatations
243      * fix missing re-init. of gptr (missed by TAF)
244    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
245      me to turn off the excessive output to STDOUT that this package produces
246    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
247      and add those terms in Vector-Invariant formulation.
248    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
249      if the control period (xx_hfluxperiod etc) is 0
250    o in profiles pkg, clean routines and fix details
251    o in ecco pkg, reading ssh data:
252      fix problem in case the model does not start at iter0=0
253    o fix mnc-pickup/restart for ptracers
254    o new package prifiles:
255      code to compute profile-based cost by Gael Forget
256      (modifs in ecco, ctrl, autodiff)
257    o Benign bug fix in initialization (spotted by M. Mazloff) of
258      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
259    
260    checkpoint58c_post
261    o adjoint: finish NLFS adjoint and provide reference output in
262      verification/global_ocean.90x40x15/results_ad_nlfs
263    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
264      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
265      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
266      with SEAICE_CGRID defined.
267    o move calendarDumps from "data" to "data.cal" and clean-up the code
268      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
269    o add useEXF & useCAL flags (for now, set in hard-coded way)
270    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
271      (were missing in NH mode, and wrong in quasihydrostatic mode).
272      waiting for Chris updated version of calc_gw to add those CALLs.
273    o fix bug in quasihydrostatic S/R ;
274      add a test for this option: global_ocean.90x40x15.qshyd
275    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
276      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
277    o add on/off flag useOffLine for package OFFLINE
278    o seaice:
279      - modify advection so that it works also on the C-grid
280      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
281        problem in multi-tile runs with C-grid
282      - add flags for clipping ice velocities and/or masking solver forcing
283      - fix drag (ocean on ice) formulation and a bug that caused noise in the
284        C-grid solver
285      - added a few comments to seaice_diffusion.F
286      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
287        are now exclusive)
288      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
289        required re-ordering the code a little:
290       + make DAIRN global variable (defined in SEAICE)
291       + move computation of the viscosities eta and zeta into a new separate
292         routine (because I need to recompute them in seaice_ocean_stress.F)
293    
294    checkpoint58b_post
295    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
296      update output.txt of exp. aim.5l_cs.thSI
297    o various mnc cleanups and improvements:
298      + shrink lookup tables by factor of ~4
299      + better error reporting when running out of lookup space
300      + able to handle longer path/file names (up to 500 chars)
301    o adjoint:
302      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
303      - TBD: "hidden" mom_vecinv recomp. in dynamics
304    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
305     (allow to differentiate between forcing components using new integer flags:
306      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
307     and add new flag to put Dissipation tendency out of Adams-Bashforth.
308    o ecco
309      - enable trend removal from SSH anomaly obs.
310    o adjoint
311      - a fix for PmEpR when #undef EXACT_CONSERV
312      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
313      - try to fix "hidden" recomp. in forward_step for NLFS
314        (NLFS seems broken sometimes after I checked it in)
315    o seaice:
316     - add c-grid version of the dynamic solver:
317       + three new routines that are the c-grid substitute lsr, dynsolver
318         and ostres
319       + put a few fields that were local to dynsolver into global common
320         blocks, so that I can move the computation of stresses etc into
321         seaice_lsr (saves coding but may break the adjoint).
322     - replace more hardwired parameters by runtime parameters
323     - add ice masks that mask the rhs of the implicit solvers where there
324       is no ice (commented out in seaice_dynsolver, because i am not sure
325       if this works properly), eventually this should replace the clipping
326       of ice velocities in seaice_dynsolver to +/-40cm/s.
327    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
328      include it only where its needed
329    o move balancing of fluxes before the call of external_forcing_surf
330    o seaice:
331      - correct units of turning angles (now they are really in degrees)
332      - move computation of GWATX/Y out of main routine into dynsolver
333      - initialize GWATX/Y in seaice_init
334    o Apply mask on Fresh-Water flux (needed for SSH forcing).
335      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
336    o seaice: add runtime flags for turning angles (default to zero)
337    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
338      and trend from exf forcing and ctrl control adjustments
339    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
340      (since checkpoint57x_post)
341    o change the default rotation period to 86164.s = the Earth rotation
342    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
343      and based on a reference stratification. Tested within hs94.cs-32x32x5.
344    o seaice advection: add code for choosing between the default (2nd order
345      central differences) and multiDim advection schemes provided by
346      pkg/generic_advdiff
347    o seaice:
348      - removed all references to SEAICE_GRID.h fields from
349        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
350        (cubed-sphere configuration will change a little)
351      - grid computations in seaice_init are obsolete now.
352      - cleaned up code a little so that is easier to read (hopefully).
353      - added new (better?) discretizations of default advection and diffusion
354        (turn on with SEAICEuseFluxForm)
355      - replace 1 in 3d global fields by kSurface in growth.F
356      
357    checkpoint58a_post
358    o seaice:
359      - bug fix in advect.F
360    o shelfice:
361      - separate shelfice load anomaly from pload (breaks with time
362        dependent forcing), => introduce constant field shelficeLoadAnomaly.
363        Its default is 0., but it may be computed more cleverly from (unknown)
364        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
365        done offline. A good approximation of the pressure load anomaly is
366        necessary to avoid large initial adjustment processes underneath
367        deep-reaching shelfice.
368      - small fix in ISOMIP shelfice_thermodynamics
369      - add more sophisticated thermodynamics of Hellmer (1989), this is
370        now the default
371      - give a few constants more intuitive names
372    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
373      if bulk formulae are used in long integration (especially EmPmR). Turn
374      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
375      if balancePrintMean, the imbalance that is substracted is printed to
376      STDOUT.
377    o fix bug (typo) in obcs_apply_eta.F
378    o add a new package shelfice which enables us to model the circulation
379      underneath shelf-ice with draughts of hundreds of meters.
380     - works
381     - to do: + include improved thermodynamics
382              + check whether kSurfC (from model/inc/SURFACE.h) can be used
383                instead of new field kTopC
384              + can we use topoFile, Ro_surf and existing code in ini_depth.F
385                instead of new field R_shelfIce and new code in ini_depth.F
386                and ini_mask_etc.F?
387              + adjust vertical mixing schemes?
388    o seaice pkg:
389     - add a cpp-flag to include a simple formula for a salinity dependent
390       freezing point of sea water at the surface
391     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
392       meridional stresses are now different (and hopefully correct)
393    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
394       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
395       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
396    o pkg/diagnostics: add options and parameters for regional-statistics
397       diagnostics ; define regions by reading a region-mask from a file
398       (might add other options later)
399    o pkg/bulk_force:
400     - add option and parameters to use AIM surface-flux formulae.
401     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
402       others forcing fields (defined in PARM05, parameter file "data") are loaded
403       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
404     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
405     - use the right EXCH call for uwind,vwind (to work on CS-grid).
406     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
407       and parameters (note: calcWindStress replaces .NOT.readwindstress).
408     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
409    
410    checkpoint58
411    o add "--embed-source" option to genmake2 which, when the supporting
412      tools can be compiled (as determined by genmake2) will turn on the
413      embed_files package which then embeds the entire MITgcm source code
414      (*.[fFhc] + Makefile) used for the build within the executable
415      - requested by CNH but off by default
416      - adds a paltry <9MB to the mitgcmuv executable in most cases
417      - only writes the output when useEMBEDSRC in eedata is true
418    o clean up 3-dim. relaxation codes:
419      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
420      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
421      * Thanks to Tom Haine for testing!
422    
423    checkpoint57z_post
424    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
425      affects output (@ truncation level) of exp. plume_on_slope ; updated.
426    o fix the pickup behavior for obcs in combination with ptracers
427    o fix a bug in ptracers_external_fields_load
428    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
429      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
430    o transfered surface NH pressure to eta field (if exactConserv).
431    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
432         and update lab_sea output.txt file.
433    o completing 3-dim. relaxation code: additional term
434         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
435      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
436      * At compile time, in "EXF_OPTIONS.h" set
437          #define  ALLOW_CLIMTEMP_RELAXATION
438          #define  ALLOW_CLIMSALT_RELAXATION
439      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
440          tauThetaClimRelax3Dim = 15552000.0,
441          tauSaltClimRelax3Dim  = 15552000.0,
442      * 3 cases:
443          1) Use a constant-in-time 3-dim. field
444          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
445          3) Real-time relax. to time-evolving prescribed field
446    o Adding Laplacian-type smoothness constraint on
447      initial and boundary (forcing) controls (ic, bc)
448      * enable at compile-time via
449        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
450      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
451      * Absolute scale somewhat unclear so far
452      * no area weighting was included since no other cost term does so far
453    
454    checkpoint57y_post
455    First step for a NLFS adjoint
456    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
457    o new init. routines for calc_r_star, calc_surf_dr
458    o still need to deal with ini_masks_etc
459    o testreport seemed happy
460    checkpoint57y_pre
461    
462    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
463    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
464    o add new offset feature to offline pkg (plus minor cleanup)
465    o cfc fixes for final year of integration
466    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
467      be in GCHEM_OPTIONS).
468    
469    checkpoint57x_post
470    o fix testreport Pb in multiple test experiment.
471    o cleanup our namelist syntax in verification:
472      - make it more F95 standards compliant (some work still needed)
473      - allows the vast majority of our tests to work with gfortran
474    o Non-Hydrostatic:
475     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
476     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
477    o Allow to apply AB on T,S rather than on AB(gT,gS):
478     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
479     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
480       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
481     - need a "clever" read_pickup to restart from the other AB formulation
482    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
483    o remove some unused variables (reduces number of compiler warnings)
484    o adjoint
485      * Disable useVariableViscosity for adjoint for time being
486        (there are a number of extensive recomputations)
487      * Initialize certain variables needed for adjoint
488    
489    checkpoint57w_post
490    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
491                 fix the singleCpuIO RS version of MDSWRITEFIELD
492       and add a WARNING if using globalFiles=T with multi-processors.
493    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
494      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
495    o tracer advection scheme:
496      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
497       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
498       was not very convenient).
499      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
500       (further tests needed for the implicit DST & Flux-Limiter schemes).
501    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
502      and sRef for convenience, handy, when you want to initialize
503      ptracers in a large domain with a constant non-zero value. Also,
504      untangle ptracers_init.F a little.
505    
506    checkpoint57v_post
507    o change dome exp. to use variable viscosity in side-drag terms.
508    o remove all the files from the cfc_offline test since they are now
509      incorporated into tutorial_cfc_offline which has been producing
510      identical results for a few days of testing
511    o add new parameter: sideDragFactor to enable half-slip-side BC
512      and change side-drag S/R to use viscosity from mom_calc_visc
513      (can switch back by setting sideDragFactor=0.); affects results at
514      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
515       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
516    o vorticity & strain are now computed without masking, to account for
517      no-slip-side BC in variable viscosity calculation ; mask is applied
518      anyway later on, before computing advection/coriolis terms.
519    o modify exp4 to test new obcs support for reading from external files
520      and for passive tracers
521    o fix behavior of ptracers_monitor when monitor output is written to a
522      netcdf-file; still not independent of monitor.F (writes in the same
523      file).
524    o change default value of tRef (put a uniform, meaningful value for ocean
525      & atmos) and initialize sRef (was missing, as Martin mentioned).
526    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
527      to be proportional to enstrophy dissipation length.  Thus,
528       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
529      This is now consistent with Smagorinsky and with the manual.
530    
531    checkpoint57u_post
532    o OBCS and PTRACERS: add open boundary support for passive tracers
533      - either use homogenous (pseudo) v.Neumann conditions or prescribe
534        OB-values from file; this is not different from the way theta and salinity
535        are treated
536      - however, Orlanski-radiation conditions are not supported, and the model
537        will stop if you use pTracers and Orlanski at the same time.
538      - beefed up the rountine obcs_external_fields_load: now only those open
539        boundary values are overwritten with values from files for which there
540        are really files, otherwise the OB-fields remain untouched. This makes
541        it possible to use different OBs at different ends of the domain (as
542        with EXF)
543    o reduce number of exch calls in shap_filt (s2).
544    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
545      truncation level) 4/5 MLAdjust test results (11&12 digits match).
546    
547    checkpoint57t_post
548    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
549    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
550      same truncation, independent of the face number: affects affects several
551      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
552    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
553      note that biharmonic viscosity + no-slip was not tested in any experiment.
554    o fix bug in non-linear free-surf side-drag ; generate new output for
555      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
556    o make mnc honor the writeBinaryPrec flag for most kinds of output
557    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
558    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
559      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
560    o add brackets in multi-terms sum to get same truncation, independent of
561      the face number (manage to get exactly same value of gU,gV at the cs-edge)
562      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
563    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
564      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
565      a maximum grid-scale Reynolds number.  Also, changes all length calculations
566      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
567      Suggested values of viscosity parameters found in mom_calc_visc.
568      Many new viscosity diagnostics available.
569    
570    checkpoint57s_post
571    o Add clearing-house for viscosity calculations, mom_calc_visc and
572      correct numerous bugs in LeithD and Smagorinsky discretizations.  
573      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
574      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
575      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
576      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
577      The Strain-Tension form is now called with useStrainTensonVisc=.true.
578      ViscAhStrain and viscAhTension are now retired.
579    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
580    o In response to JMC's bug report, genmake2 now ignores any soft-links
581      that it finds in the *current* directory when searching for files.
582      Soft-links found in any other source directories will still work as
583      they did before.
584    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
585      a C routine to unlimit the stack size
586    o mnc-ify pkg/aim snapshot vars
587    o mnc-ify pkg/land as requested by Daniel
588    o various changes to mnc including:
589      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
590      - output can now be grouped so that all files within a group
591          change the ITER portion of their names in lock-step together
592      - can now read ("global") PER-FACE (in addition to PER-TILE) files
593          and works with both EXCH1 and EXCH2 (but needs more testing)
594      - writing works for all verification test cases w/ g77 on Linux
595    
596    checkpoint57r_post
597    o make MNC variable initialization happen earlier
598    o add diagnostics for (almost) each term of the momentum Eq.
599    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
600    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
601    o remove MINIMAL_TAVE_OUTPUT option ;
602      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
603    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
604      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
605    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
606    o add time-dependent SST, SSS control
607    o cost terms in ecco/ modularized (new cost_generic.F)
608    o cost_averages routines are modularized (new cost_averagesgeneric.F)
609    o new infrastructure for seaice model vs. obs misfits in seaice/
610      * driver from the_main_loop.F is seaice_cost_driver.F
611      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
612      * gradient check in Exp. 6a of natl_box_adjoint/
613    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
614      (see README file)
615    
616    checkpoint57q_post
617    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
618    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
619      - bug was reported by Jean-Michel and Ian Fenty
620    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
621      update exp. cpl_aim+ocn output.
622    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
623      Needed for high-res. runs with large global files
624      to be able to limit tapelev size
625    o Changed some tests for adjoint:
626      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
627      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
628      * global_ocean.90x40x15/ back to default 3-level checkpointing
629    o Modifications to enable scripted COMMON to MODULE conversion
630      * verification/OpenAD/code/ has necessary scripts and description;
631      * converts, compiles and runs successfully;
632    
633    checkpoint57p_post
634    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
635    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
636      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
637    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
638    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
639      (was already the case for dissipation with mom_vecinv,
640       and also the case for grad.PhiHyd when staggered-timeStep)
641      This will allow to put dissipation out-off the AB time-stepping.
642     Unfortunately, affects truncation error. Update output of exp. that "fails"
643      (cg2d matching number) and leave the others for later: front_relax(10),
644      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
645      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
646    
647    checkpoint57o_post
648    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
649      (2) its ready to be documented during the 20050801 DocFest
650    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
651      for ideal_2D_oce and lab_sea on linux_ia32_g77
652    o set to #undef CTRL_SET_OLD_MAXCVARS_30
653      in global1x1_tot/code_seaice_adj to access indices 32, 33
654      (worth another tag)
655    
656    checkpoint57n_post
657    o adding precip control xx_precip 32
658    o adding swflux control xx_swflux 33
659    o Replacing 10 forcing penalty cost routines by 1 generic.
660    o Implementing partitioning in time-mean and variable adjustment
661      for atmos. state.
662    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
663    o in natl_box_adjoint:
664      * updated exp 1 to 10
665        (but does not have time-mean vs. variable split results yet)
666    o updated global1x1/*_seaice_adj/
667      to incorporate latest changes
668    o enable useSingleCpuIO for mdsio vector routines
669      (applies in particular to tapelev I/O)
670    o removed inefficient K-loop in all active_file*control*.F
671    
672    checkpoint57m_post
673    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
674      and advect_cs (use EXCH-2 and standard cs-32 grid files).
675    o pkg/exch2: filling of face-corner halo regions is optional
676      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
677    
678    checkpoint57l_post
679     tag before updating tutorials (pre-release-2)
680    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
681       for output and interpolation of input fields onto model grid)
682    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
683       Affects results of exp. rotating_tank ; update output.txt.
684    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
685          and taking the square quantity and/or using a fraction-weight field.
686    o fix aim_diagnostics_init.F mate numbers.
687    o add mnc output capability to diagnostics/diagstat and update
688      our cvsignore files for the ACSII output generated
689    
690    checkpoint57k_post
691    o lab_sea now uses diagnostics package and provides a suite of
692      new EXF diagnostics output.
693    
694    checkpoint57j_post
695    o exf
696      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
697        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
698        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
699      * extended diagnostics output
700        - now includes all EXF variables
701        - hs, hl moved to common block
702        - separate S/R for diagnostics, called after ctrl vector is added
703        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
704        - EXFqnet contains true Qnet (i.e. includes qsw)
705      * updated verif. lab_sea, global_with_exf
706      * Rearranging hflux (exf_mapfields -> exf_getforcing)
707        to ensure that diagnostics sees a true EXFqnet
708    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
709    o diagnostics pkg: change pointers so that 1 diagnostic can be used
710      several times with different frequencies.
711    o mnc-ify the thsice package as requested by Daniel Enderton
712      - the monitor--MNC output needs work
713      - many attributes need to be added (most are currently blank)
714    o mnc-ify theaim_v23 package as requested by Daniel Enderton
715      - many attributes need to be added (most are currently blank)
716    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
717    o add Sadourny like discretization to the 4th.O vorticity advection scheme
718    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
719      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
720         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
721    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
722     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
723    
724    checkpoint57i_post
725    o Diagnostics package was changed: diagnostic allocation is now deactivated
726      by setting an empty file name in the namelist (used to be by setting 0 frequency)
727    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
728      add 1rst Order upwind vertical Shear.
729    o add a quick fix for A/B checkpointing in OFFLINE mode
730    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
731      end-run around the C/Fortran linking horror in eesup/src/timers.F
732    o added pkg/runclock: allows user to terminate run based on wall clock
733    o added non-hydrostatic scaling parameter: nh_am2
734    o pkg/my82: futile attempt to make results compiler-independent by adding
735      some "_d 0", etc. no effect.
736    o for mnc output, fill the 'T' coordinate var with myTime and create a
737      separate 'iter' variable for iteration count
738    o pkg/diagnostics:
739      add new capability: output of Global/Regional & per-level statistics ;
740      tested against monitor output (including land & thSIce) on various exp.
741    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
742    
743    checkpoint57h_done
744      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
745      data.diagnostics, data.gchem, data.ptracers) is done.
746    
747    o pkg/diagnostics: prepare for Global/Regional statistics.
748      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
749    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
750      and rename it: DIFFERENT_MULTIPLE
751    
752    checkpoint57h_post
753    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
754    o pkg/diagnostics: change output frequency, now in seconds (instead
755      of Nb of iterations). This requires to change data.diagnostics.
756    checkpoint57h_pre
757    
758    o in mnc, let the user create the output dir if both mnc_outdir_date
759      and mnc_outdir_num are false
760    o add fflags() to pkg/diagnostics which allows one to specify, on a
761      per-file basis, the file precision [default behavior is unchanged]
762    o added diagnostics to pkg/kpp, including computation of mixed layer
763      depth based on a temperature/density criterion
764    o updated verification/natl_box to test the new pkg/kpp diagnostics
765    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
766    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
767    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
768      not mnc -- this mistake was found by JMC and is now corrected
769    
770    checkpoint57g_post
771    o add Adams-Bashforth 3rd Order time stepping:
772      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
773      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
774    checkpoint57g_pre
775    
776    o make lambda[Theta,Salt]ClimRelax spatially varying
777      (default remains spatially uniform constant based on tau)
778    o added new control variables
779      * init. uVel, vVel, etanN
780      * lambda[Theta,Salt]ClimRelax
781    o separate masks used for ctrl_pack/unpack 'from write_grid' output
782      (suggested by G. Forget)
783    
784    checkpoint57f_post
785    o add parameter "baseTime" = model base time = time at iteration zero
786      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
787      account for baseTime shift
788    o move Coriolis arrays from PARAMS.h to GRID.h
789    checkpoint57f_pre
790    
791    o mnc-ifying the seaice package
792    o introduced an alternative length scale calculation for use in the limiting
793      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
794    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
795    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
796      as well as grad(vort3).  Made it compatible with both approximate form
797      for the cubed sphere and full form of these gradients.  Added flag
798      useFullLeith to select between approximate and full form.  
799    o add "d0" in getcon.F to reduce differences between compilers/platforms
800      update output.txt of exp. fizhi-gridalt-hs
801    o change port_rand funtion to allow to set the seed.
802    o fix obscure MNC bug involving conversion between reals and integers
803      - it caused no problems with certain (eg. gcc, ifc) compilers but the
804        new version is now more standards-compliant
805    o adjoint-related modifications
806      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
807      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
808      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
809    
810    checkpoint57e_post
811    o Adding eddy stress controls a la Ferreira et al.
812    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
813    
814    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
815      update output.txt of exp. fizhi-gridalt-hs
816    o add more "Z" dimensions and associated coordinate vars to MNC
817    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
818    o parameter calendarDumps: when set, approximate months (30-31 days) and years
819      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
820      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
821      months and years.  Requires pkg/cal.
822    o diagnostics: add pickup functionality
823      - off by default for backwards compatibility
824      - current version only uses MDSIO -- MNC will be added
825    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
826    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
827    
828    checkpoint57d_post
829    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
830    o modify verification/ideal_2D_oce so that it tests the creation of mnc
831      output from the diagnostics package
832    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
833    o make genmake2 more portable by using ".$FS" instead of ".f" for more
834      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
835    o add coordinate variables to the MNC output from the diagnostics package
836    o change MNC-flags default value: true when useMNC=TRUE
837    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
838      the ability (off by default) to read the grid information using MNC
839    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
840    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
841    o do snap-shot diagnostics at the middle of the time-interval (instead of
842      at the end).
843    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
844      new test for AIM with thSIce + slab-ocean
845    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
846    o move state variable diagnostics to the beginning of the time step ;
847      (note: still needs some work specially for snap-shot diagnostics)
848      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
849    
850    checkpoint57c_post
851    o Change testing option (-ieee) to get closer agreement between g77 & ifort
852    o generate new output.txt files on faulks with g77 & the new -ieee option
853    checkpoint57c_pre
854    
855    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
856      update output.txt of exp. global_ocean.90x40x15
857    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
858      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
859    o add saltFlux(+File) forcing capability with periodicExternalForcing
860    o allow to use pkg diagnostics for GM-Redi & ThSIce output
861    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
862    o improvements for the MNC output from DIAGNOSTICS:
863      - correct handling of the unlimitied dimension
864      - all dims now have associated coordinate variables
865      - variables located at U, V, and Corner ("Z") points are now written
866        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
867        *all* data points are output
868    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
869    o added pkg/seaice/seaice_monitor.F
870    o mdsio_readfield.F can now read files visible only to master MPI process.
871    o pkg/seaice: some test code for ice-modified ocean stress
872    o exf_getffields interpolation defaults to bilinear for all scalar forcing
873      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
874      spurious negative numbers for precipitation and humidity.  Will cause
875      some small numerical differences for integrations using pkg/exf/exf_interp.F.
876    o pkg/ctrl/
877      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
878        May be enabled via doPackDiag
879      *  introduce z-scaling of
880         + gradient (doZscalePack) and
881         + control (doZscaleUnpack)
882    o pkg/mdsio/
883      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
884      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
885    
886    checkpoint57b_post
887    o simplify options in diagnostics_fill arguments (remove weird combinations)
888    o fix MNC coordinate variables so that they now contain per-face index
889      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
890      general, EXCH2 grids are only aligned to a "local" coordinate system
891    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
892    o Implement instantaneous output within pkg diagnostics:
893      setting a negative frequency in data.diagnostics produces
894     "snap-shot" output (as opposed to time-average if freq > 0)
895    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
896      NOTE: change ptracer diagnostics name: use 2 characters to work with
897            more than 9 tracers. Add also diagnostics of advect & diffus flux.
898    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
899      becomes the coordinate variable for the 'T' dimension
900    o add CF-style coordinate variables to MNC
901      - just a first cut:  numbers are meaningless on the cubesphere and
902        missing along the T axis but otherwise it works!
903    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
904    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
905    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
906      this is based directly on what the model compute, so that the content of
907      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
908    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
909    o clean up build options files for SunOS, in particular
910      - remove -traditional from xmakedepend
911      - change -xarch=v9 to -xarch=native for f77
912      - restore use of make (not gmake)
913      - add CC=gcc if using g77
914    o changes per discussion of AM, JMC, & EH3 today:
915      - move redundant "grid" variables out of "state" -- in preparation of
916        creating proper CF-style coordinate variables and in recognition
917        that any/all grid variables can be easily copied (eg. w/NCO) from
918        the grid files into any of the other NetCDF files
919      - *always* output grid variables with MDSIO (this will eventually be
920        changed)
921      - output MNC grid file if useMNC is true
922    o every instance of _END_MASTER() has been found and replaced with
923      _END_MASTER( myThid ) in order to satisfy certain picky Sun
924      preprocessors
925    o re-arrange diagnostics pkg initialisation:
926     - allow each package to extend the available diagnostics list
927     - add some checking and fix small problems (multi-threaded, ...)
928     - new S/R diagnostics_fill (replace fill_diagnostics):
929       look through the short list of active diag. (instead of the long list)
930       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
931    
932    checkpoint57a_post
933    o this set of changes restores TAMC compatibility
934      tested for global_ocean.90x40x15 adjoint on trough
935      (what a pain)
936    
937    checkpoint57a_pre
938    o some modifs in tools/build_options for sunos
939    o call ctrl_pack for ctrl at end for optimcycle=0
940    
941    checkpoint57
942    o add horizontal bi-harmonic viscosity for vertical velocity
943      - new parameter viscA4W (defaults to viscA4)
944      - affects only non-hydrostatic code
945      - to be done: no-slip lateral boundary conditions
946    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
947    o implement Implicit Vertical advection for pTracers
948    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
949      (implemented also for implicit vertical diffusion & advection)
950    o OBCS: extend application of tracer open boundary conditions
951      to a strip beyond the boundary of width Olx/Oly
952    o add call monitor to TAF set of required calls (flow directives)
953      and include in natl_box_adjoint
954    o untangle a few ifdefs related to cost, ctrl, autodiff
955      untangel a few ALLOW_ECCO_OPTIMIZATION
956    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
957      (theta2, salt2 in ecco_cost_weights)
958    
959    checkpoint56c_post
960    o OBCS as control variables
961      - update ctrl_ad_diff.list, obcs_ad_diff.list
962      - remove balance of obcs controls from default
963      - fix index bug nobcs in ctrl_init
964      - fix dummy fields filen in ctrl_pack
965      - add dummy weights for obcs
966    o lsopt: comment out fort.94 output
967    o optim:
968      - remove unnecessary header files
969      - adjusted namelists
970      - add xerbla.F to Makefile
971    o exf:
972      - multiple modifications of exf_check_range
973      - unit change in exf_init_runoff from [m/year] to [m/s]
974    o mdsio:
975      - i/o-vector change debugLevel from debLevA to debLevB
976    
977    checkpoint56b_post
978    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
979      is called from DO_THE_MODEL_IO
980      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
981      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
982      - clean up PTRACERS_WRITE_TIMEAVE a little
983    o add another verification experiment that tests both the cfc-pkg and
984      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
985      reactive tendencies treated inline with regular timestepping
986    o testreport previously did a lousy job of comparing small numbers, so
987      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
988      implemented in the little c-progam tmp_cmpnum.c which is embedded in
989      testreport.
990    o ptracers_monitor: bug fix for MPI
991    
992    checkpoint56a_post
993    o GCHEM: finish reorganizating the package
994      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
995        (introduces another 3D-array for each passive tracer, but only if
996        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
997        gchemTendency is not needed because the timestep is done separately)
998      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
999      - GCHEM is now---more or less cleanly---separate from PTRACERS
1000      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1001        so clear to me how that should be done in a general way.
1002    o CFC: improve formatting of output in CFC_ATMOS
1003    o PTRACERS:
1004      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1005        that ALL experiments with ptracers enable can be checked. This makes
1006        GCHEM_MONITOR obsolete.
1007      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1008        monitorFreq
1009      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1010    o add PTRACERS (PTR0[1-5]) to testreport output
1011    o exf_check_range:
1012      * default changed to .TRUE.
1013      * will check values for niter0 if debLevA, every timestep if debLevB
1014      * STOP in exf_check_range if 'out of range'
1015      * range chosen generous to allow for potential extema
1016      TBD: a version with stricter range
1017           permitted range would be runtime parameters
1018    o GMredi:
1019      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1020      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1021      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1022    o GCHEM:
1023      - move call to GCHEM_FORCING_SEP, so that it is now called before
1024        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1025      - introduced a useGCHEM runtime flag and applied it everywhere.
1026      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1027        this flag is now only visible within GCHEM-pkg routines.
1028      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1029        be replaced by a 3D array that is computed before thermodynamics; for
1030        this, the tracer ID iTracer had to be included into the parameter list
1031        of ptracers_forcing
1032      - set up forward_step to call gchem_forcing, that will replace
1033        gchem_forcing_int in ptracers_forcing
1034      - cleaning up
1035    o small cleaning of exch2: remove files that are also in eesupp/src
1036    
1037    checkpoint56
1038    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1039    o mnc: cleanup "full" files--fixes out-of-memory problem
1040    o ECCO-GODAE
1041      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1042      * fully merged and updated from SIO code
1043        windstress sign change affects
1044        - exf_inscal_[u/v]stress
1045        - sign of xx_tau[u/v] adjustments
1046        - signs in cost_scat
1047      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1048      * natl_box_adjoint updated and compressed
1049      * 2-level checkpoint switch added
1050        (tested in EXP. 1 of natl_box_adjoint)
1051      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1052    o SVD
1053      * first complete, non-hacked version for SVD calculations
1054      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1055        performed via direct access files admtlm_vector.it????
1056        (via ctrl_[un]pack)
1057      * optimcycle is used for ARPACK iteration counter
1058        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1059      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1060        and add linear transforms where necessary
1061      * controls are initial/final SST, SSS (can be extended; need to check
1062        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1063    o mdsio: filename info to both stderr, stdout
1064    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1065      from sign change
1066    
1067    checkpoint55j_post
1068    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1069      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1070    o add consistent build directories and .cvsignore files to verification
1071    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1072    o make all subroutines 30 or less characters in length for certain older
1073      compilers to work (a thorough search only turns up two routines in
1074      pkg/ptracers)
1075    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1076      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1077    
1078    checkpoint55i_post
1079    o change arrays for total vertical diffusivity (2.D if explicit,
1080      3.D if implicit) ; each ptracer uses its own background value.
1081    o added mnc/NetCDF output capability to ocn_compon_interf
1082      - added bits to verification/cpl_aim+ocn so that it can run on
1083        ITRDA and other clusters without the mpirun "-wd" option
1084    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1085      configuration
1086    o give MNC the ability to create additional files rather than
1087      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1088      - the default is just less than 2GB which is a practical limit
1089        on many systems
1090    o Compute the non-local term using either KPP vertical diffusivity (=default)
1091       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1092    
1093    checkpoint55h_post
1094    o add verification test "vermix"
1095    o remove all the *_ioinc flags and replace with the single global
1096      outputTypesInclusive flag
1097    o allow to set a vertical profile of vertical diffusivity for T & S
1098    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1099    o useMNC moved from data.mnc to data.pkg
1100    
1101    checkpoint55g_post
1102    o Renaming carbon AD experiments to comply with testreport conventions
1103    o Updating adjoint of Held-Suarez hs94.1x64x5
1104    o Fixing directives for non-ECCO forward_step, after ECCO directives
1105      have been fixed to avoid recomp. of do_oceanic_phys
1106      Works well for global_ocean.90x40x15,
1107      but recomp. issue remains for carbon
1108    o Updating adjoint output for natl_box_adjoint after
1109      pkg/ecco has been modified (see taga c55d_post)
1110    
1111    checkpoint55f_post
1112    o rename to timeave_init_fixed
1113    
1114    checkpoint55e_post
1115    o some delicate re-shuffle of store directives to avoid one
1116      extra call of do_oceanic_physics
1117      affects ecco_the_main_loop.F, do_oceanic_physics.F
1118      checkpoint_lev1_directives.h
1119    o NB: this may break global_ocean adjoint temporarily,
1120      but it is clear how to fix it. Will do later, need this now.
1121    
1122    checkpoint55d_post
1123    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1124    o ecco_cost_weights is modified to 1x1 runs
1125    o modifs to allow observations to be read in as
1126      single file or yearly files
1127    o enable to read exf forcing fields as either
1128      single file or yearly files (flag useExfYearlyFields)
1129    checkpoint55d_pre
1130    
1131    o switch between 2-level and 3-level checkpointing
1132    o add ability of MNC to write local and "partial" (eg. 2D slices where
1133      the full 3D field is never actually stored) arrays to NetCDF files
1134      with the correct (that is, the complete multi-dimensional) set of
1135      array indicies
1136      - used in mom_vecinv() to write the diagFreq output
1137      - tested (demonstrated) in verification/aim.5l_cs
1138    o further mnc-ification
1139      - add verification/lab_sea to the list with mnc setups
1140      - fix undefined mnc v-names in cd_code
1141      - add kpp to mnc output (both snapshot and timeave)
1142    o non-hydrostatic code
1143      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1144        in calc_gw.F
1145      - defaults to viscAh
1146      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1147        friction or Leith) in non-hydrostatic mode, as long as there is
1148        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1149    o pkg/cost
1150      extend simple cost functions to treat time mean quantities
1151      (T,U,V) via cost_accumulate_state from cost_tile
1152    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1153        be 2 times larger than the minimum size the advection scheme requires.
1154        now get a perfect conservation of salt in advect_cs test-exp (updated)
1155    o GGL90 (Gaspar's TKE mixed layer)
1156      - add horizontal diffusion of TKE, requires exchanges in
1157        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1158        default. In OPA there is no horizontal diffusion of TKE but the
1159        mixing coefficients are computed from a horizontal average of TKE of
1160        6 points or so. I think that diffusion has a little more physical
1161        justification.
1162      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1163        was in vain)
1164      - mask tke-variable in ggl90_init
1165    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1166    o fix biharmonic diffusion on CS-grid.
1167    o more obcs stuff
1168      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1169        for reading boundary values. This routine is called from
1170        obcs_prescribe_read
1171      - updated obcs_check
1172      - changed sponge layer relaxation parameter units for days to seconds
1173      - turned off sponge layer by default
1174      - changed argument list of OBCS_CALC to myTime+deltaTclock
1175      - fixed about 35 bugs in obcs_external_fields_load
1176    
1177    checkpoint55c_post
1178    o obcs stuff
1179      - new runtime flags useOBCSprescribe, useOBCSbalance
1180      - re-arranged obcs_calc
1181      - moved exf_getobcs to obcs_prescibe_read
1182        obcs_prescibe_read is called after ORLANSKI stuff
1183        and independent of it (executable can contain all).
1184      - updated obcs_check
1185      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1186        These may be necessary only if tangential velocities are
1187        prescribed at OB, not sure, needs testing.
1188    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1189      which simplifies the calls and passes the ifc check-bounds test
1190    
1191    checkpoint55b_post
1192    o add a 2D scalar, Z location, exchange_2 routine.
1193    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1194      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1195      affects advect_cs results (for the wrong reason): update output.txt
1196    o use a more standard discretization for biharmonic viscosity ;
1197     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1198      affects results of dome set-up: update output.txt
1199    o fix gad_advection.F (CubedSphere part), back to version 1.23
1200    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1201    
1202    checkpoint55a_post
1203    o merged code to
1204      * prescribe/read time-dependent open boundaries
1205        (works in conjunction with exf, cal)
1206      * sponge layer code for open boundaries
1207      * each boundary N/S/E/W now has its own CPP option
1208        (healthy for the adjoint)
1209    
1210    checkpoint55
1211    o up-to-date adjoint of previous breaks
1212      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1213      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1214      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1215      - carbon: * remove tr1-related adjoint verification
1216                * add ptracer as control variable
1217    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1218      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1219    
1220    checkpoint54f_post
1221    o in verification/carbin/ remove experiment related to
1222      ALLOW_PASSIVE_TRACER (array tr1 etc)
1223      code_ad/ input_ad/ results_ad
1224    
1225    o add two new packages
1226      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1227        + subject to optimization (memory)
1228      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1229        + subject to reordering (many GOTOs in the original code)
1230        + so far opps is called for every (i,j) point, and then operates in
1231          the vertical; one may want to reorder the scheme in order operate in
1232          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1233          fields)
1234    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1235      - all verification tests compile and run with linux_ia32_g77
1236      - defaults are compatible with current input files--nothing
1237        should change if you were not previously using MNC
1238      - MNC output has been added in numerous places (eg. timeave)
1239        but there are still a few writes not yet do-able with MNC
1240        (this is in progress)
1241      - flags now allow for either/or/both use of MDSIO and MNC and
1242        documentation will soon follow
1243      - numerous small formatting cleanups for ProTeX
1244    o add version info (via BUILD_INFO.h) to MNC and stdout
1245    
1246    checkpoint54e_post
1247    o add two new packages
1248      - pp81 (Packanowski and Philander, 1981), Richardson number and
1249        stratification dependent mixing
1250      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1251      - these scheme operate in a similar manner as KPP (without ghat, of
1252        course), however there is only one diffusivity that is used for both
1253        temperature and salinity (and passive tracers)ç
1254    o add offline package
1255    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1256      provided by Stephanie Dutkiewicz
1257    o genmake2: add ability to search for C compilers and cleanup test output
1258      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1259    
1260    checkpoint54d_post
1261    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1262    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1263      leading to additional shift by 5 days each year of integration
1264       (i.e. leading to considerable offset over the years)
1265    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1266    o start with no AB and no initial filtering (staggerTimeStep):
1267      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1268    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1269      (external loading & cpl import/export stay in forward_step.F)
1270    o update coupling interface to work with new staggerTimeStep
1271    o change MDSIO ptracers_pickup.
1272    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1273    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1274    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1275    
1276    checkpoint54c_post
1277    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1278      this affects (truncation error) output.txt of test-exp:
1279       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1280    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1281    o change Qnet to always be the net heat flux, (+upward).
1282      affects (truncation error) output of natl_box exp.: updated
1283    o define the max number of passive tracers in PTRACERS_SIZE.h
1284    o start to test mnc routinely in exp0
1285    o add sea-ice loading (sIceLoad) as a new forcing field.
1286    
1287    checkpoint54b_post
1288    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1289       impressive on Altix and Opteron systems)
1290    o diagnostics can now write NetCDF files through the mnc package
1291    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1292    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1293    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1294      affects (truncation error) output of lab_sea & natl_box exp.: updated
1295    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1296    
1297    checkpoint54a_post
1298    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1299    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1300    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1301    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1302      + internal_wave (shift in writing cg2d_ini_res)
1303    checkpoint54a_pre
1304    
1305    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1306      - modified verification/lab_sea and natl_box_adjoint accordingly
1307    
1308    checkpoint54
1309    checkpoint53g_post
1310    o prepare splitting of thermodynamics: store convect.counter in common block
1311    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1312      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1313    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1314    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1315    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1316    o restore adjointability
1317    
1318    checkpoint53f_post
1319    o modifications that affect AIM experiment results (update output.txt):
1320      - no advection of S at top interface Nr (pkg/generic_advdiff)
1321      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1322    o AIM pkg:
1323      - include stability function into surf.Flux derivative relative to Tsurf
1324      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1325    
1326    checkpoint53e_post
1327    o merged cylindrical coord configuration
1328    o added rotating_tank experiment
1329    checkpoint53e_pre
1330    
1331    checkpoint53d_post
1332    o faulks upgraded: re-generate output.txt that have changed:
1333       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1334    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1335    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1336    o added Sadourny discretization of Coriolis
1337      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1338      - re-enabled use of omega3 (useAbsVorticity)
1339    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1340      vector-invariant equations
1341      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1342    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1343      hopefully without new bugs
1344      - still to do: biharmonic friction for non-hydrostatic w
1345    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1346    o regenerated output for global_ocean_ebm (using -ieee)
1347    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1348      of mom_common/
1349      - simple re-arrangement of instructions within computing loop
1350    checkpoint53d_pre
1351    
1352    checkpoint53c_post
1353    o new version of coupler for AIM+thSIce and Ocean models
1354     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1355     - land: change Evaporation of snow
1356     - aim with thSIce: fix bug in snow-precip.
1357    o changes to calc_gw.F
1358     - bug fix for w^2 term near the bottom boundary
1359     - (hopefully) improve the lateral slip boundary condtions for use with
1360        partial/looped cells
1361      - because the bug fix changes two verification experiments anyway (exp5
1362        and plume on slope), change the lateral boundary condition from half slip
1363        to the value of no_slip_sides
1364    o ebm package wasnt quite up to the parallel task. Fixed that.
1365    o Adjoint of EBM package + verification
1366      * TLM OK
1367      * ADM not sufficient accuracy yet (needs further testing)
1368    
1369    checkpoint53b_post
1370    o Commiting new energy balance model to repository
1371      * package is pkg/ebm
1372      * verif. is verification/global_ocean_ebm
1373      * references are in ebm_driver.F
1374    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1375    C        Global thermohaline circulation. Part I:
1376    C        Sensitivity to atmospheric moisture transport.
1377    C        J. Climate 12(1), 71-82
1378    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1379    C        Global thermohaline circulation. Part II:
1380    C        Sensitivity with interactive transport.
1381    C        J. Climate 12(1), 83-91
1382    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1383    C        Destabilization of the thermohaline circulation
1384    C        by atmospheric eddy transports.
1385    C        J. Climate 7(12), 1870-1882
1386    o Will need long integration testing.
1387    checkpoint53b_pre
1388    
1389    o created pkg/mom_common in preparation for variable viscosity code
1390    o renamed and split ini_mnc_io
1391    o pkg/land: only liquid water can diffuse or run-off
1392    o AIM using land: soil wetness availability account for snow
1393    o added printMapIncludesZeros to EEPARMS namelist
1394    
1395    checkpoint53a_post
1396    o restore TAMC compatiility for exf_constants.h
1397      (no usage of _d in .h)
1398    o Additional storing in KPP in an attempt to fix
1399      TAMC problem with adjoint of KPP code.
1400      (no success...)
1401      Identical code works fine with TAF.
1402    o Fixed verification/natl_box_adjoint experiments.
1403      Initial conditions for Experiments 4 and 5 are now
1404      set to "SEAICE_initialHEFF=0", which is more reasonable,
1405      and hence gives results closer to that of Experiment 2.
1406      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1407    
1408    checkpoint53
1409    o stable checkpoint with up to date adjoint
1410      TLM tests only run for 1st grdchk at the moment. Its unclear if
1411      this is a code problem or a problem with resetting code for g_
1412      variables that is being autogenerated wrong.
1413      Otherwise:
1414       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1415       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1416         are both still in chaos following their security messes.
1417    
1418    checkpoint52n_post
1419    o various build (mostly genmake2) changes including:
1420      - ability to build/run more easily within Cygwin and MacOS X
1421      - more complicated Makefiles with a stronger dependence on Gnu Make
1422    o pkg/seaice modifications
1423      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1424        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1425        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1426      - changed proxy for geostrophic velocity and updated
1427        verification/lab_sea/results/* accordingly
1428      - removed ADI dynamic solver from pkg/seaice
1429      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1430        they caused a segmentation fault under certain circumstances
1431      - removed unused field WATR
1432    o bug fix in exf-package:
1433      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1434         now reflect that.
1435    o small fixes in the cal-package:
1436      - set reference date to first of January for the 'model'-calendar
1437      - failing of cal_CheckDate in cal_FullDate now actually results in a
1438        warning
1439    o small modifications in exf-package to increase flexibility:
1440      - change climtempfreeze from a constant to a runtime parameter that
1441        is specified in data.exf_clim (default = -1.9)
1442      - introduce runtime parameter windstressmax (default = 2.0) that is
1443        specified in data.exf
1444    o fix in pkg/thsice:
1445      - update Evap (Tsf changes) to be consistent with Latent heat flux
1446      - maintain snow precipitation unchanged (even if Tsf >=0).
1447     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1448    
1449    checkpoint52m_post
1450    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1451      this does not change any of the results, because myIter=0 in swfrac always
1452      lead to jwtype=2 (the default anyway), but the call makes little sense
1453      as a default
1454    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1455    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1456      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1457    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1458    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1459    o extending useSingleCpuIO option to work with new exch2 I/O format
1460      - old-style, missing-tile I/O is still accessible by defining CPP
1461        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1462    o monitor package can write to NetCDF files and/or STDOUT
1463    o fix re-definition bug in MNC_GRID_INIT_ALL()
1464    o doc/api_reference added
1465      - a framework for building an API Reference Manual using all
1466        the "protex" comments embedded in the code
1467      - see pkg/generic_advdiff, pkg/mnc for examples
1468    o MNC:
1469      - make myThid the last argument for all subroutines
1470      - new default for the grid files: NO halos
1471      - add useMNC and other run-time flags
1472      - separate per-file-group handling of the unlimited dimension
1473      - early initialization of MNC w/ flags read at the eeboot stage
1474        and lookup tables set in initialize_fixed
1475      - write all MNC output to a freshly-created directory
1476    o thermodynamics sea-ice (thsice) is now tested with testreport.
1477    o test exp. advect_cs: use the standard cs32 grid ; update output.
1478    o Added functionality to grdchk:
1479      pick global i,j,k position (or nearest wet) where to perform check.
1480    
1481    checkpoint52l_post
1482    o new land formulation:
1483      a) use ground enthalpy as prognostic variable to ensure exact
1484         energy conservation.
1485      b) account for water temperature and for latent heat of freezing
1486         in all processes (rain, run-off, ground storage)
1487      c) compute surface and ground temperature implicitly.
1488    o aim_v23 modification for new land model:
1489      a) Treat separately land / ocean / sea-ice surface fluxes
1490         to allow implicit computation of land & sea-ice surface temp.
1491      b) add snow precipitation.
1492    checkpoint52l_pre
1493    
1494    o fix problem (when 1 tile is empty) in min/max monitor.
1495    o fix bug in timeAve (u,vZetatave in common block)
1496    o no restoring terms under ice for pkg/seaice
1497    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1498    o bug fix for pkg/seaice pickups
1499    o change MNC call locations and add coordinate attributes
1500    o mask vorticity at the corner ; affects global_ocean.cs output
1501    o fix ini_curvilinear_grid ; test CS experiments with mpi
1502    o aim.5l_cs: modify sea-ice fraction input file ; update output
1503    o exf: Adding simple range check routine for exf fields after read
1504    
1505    checkpoint52k_post
1506    o removed top-level directory "diags"
1507      - we migrated these functions to pkg/timeave a long time ago
1508    o fixed bug introduced in pkg/monitor
1509    o accuracy ctrlprec = 32 insuffient for gradient checks using
1510      averaged fields (I/O via cost_averages)
1511      -> use ctrl.h in active_file*.F to control I/O precision.
1512    o paramter list of CALL ADTHE_MAIN_LOOP
1513    o added initial do_the_model_io to ecco
1514    o set all ...Freq to zero after cost_final
1515      taveFreq, dumpFreq, pChkptFreq
1516    o MAIN and ECCO differentiability restored
1517    
1518    checkpoint52j_post
1519    o fix nchklev in tamc.h for global_ocean...
1520    o Bringing flow and store directives up-to-date
1521    o Really weird thing!
1522      call do_the_model_io from the_main_loop with parameters
1523      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1524      TAF places a faulty re-call of initialise_varia
1525      after cost_final call which should not be there!
1526    checkpoint52j_pre
1527    
1528    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1529      error messages
1530    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1531    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1532      debug output
1533    o modfied mdsio_writefield.F to handle non-global files under exch2
1534    o update AIM Cubed-Sphere exp (aim.5l_cs):
1535      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1536    o update AIM Equatorial Channel exp:
1537      use standard aim_v23 pkg and change the SST fields to be more realistic.
1538    o globalFile now works with exch2
1539    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1540      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1541    o limit timeave output for hi-res integrations
1542    
1543    checkpoint52i_post
1544    o removed CPP_EEOPTIONS.h from verification/*/code
1545    o updated the tiling for global_ocean_pressure
1546    checkpoint52i_pre
1547    
1548    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1549      the old pkg/aim).
1550    
1551    checkpoint52h_pre
1552    o shortened offending lines in exch2_send_rx?.template
1553    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1554    o genmake2: add build & execute test for NetCDF code
1555    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1556      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1557    o added useSingleCPUIO flag to monitor.F and mon_out.F
1558    o added temporary hack for sea-ice dynamics on the cube:
1559      metric terms are ignored and it is assumed that
1560      there is no sea-ice on cube faces 1, 2, 4, and 5.
1561    
1562    checkpoint52f_post
1563    o added exch2 cube routines to pkg/exch2
1564    o modified hs94.cs-32x32x5 to use it
1565    o added new grid files to hs94.cs-32x32x5
1566    checkpoint52f_pre
1567    
1568    checkpoint52e_post
1569    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1570      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1571    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1572      to work with implicit vertical advection and AB ;
1573    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1574    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1575     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1576    checkpoint52e_pre
1577    
1578    o fix bug in impldiff when Nr=1 or Nr=2.
1579    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1580    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1581    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1582      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1583    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1584    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1585    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1586    
1587    checkpoint52d_post
1588    o re-tiled many expts to allow comparison in multi-processor mode
1589      - updated output accordingly
1590      - changed hs94.128x64x5 to use intial T from file rather than use the
1591        random number generator
1592    o add infrastructure in model routines for fizhi and gridalt packages
1593    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1594    o changes to permit hi-res, cubed-sphere, configuration
1595      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1596      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1597      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1598        of surface winds for the cube
1599      (A verification experiment, based on global_ocean.cs32x15, but with
1600       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1601       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1602       complete with example surface forcing files and matlab scripts to look
1603       at the output and compare it with that of global_ocean.cs32x15.)
1604    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1605       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1606       to conform to the common rule.
1607    o check-in the first version of the coupler + interfaces for multi-components
1608       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1609       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1610       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1611       - ocean and atmos. share the same horizontal grid (no interpolation).
1612       - exchanges between component and coupler is done in forward_step
1613    o new verification experiment, cpl_aim+ocn:
1614       coupled ocean - AIM atmosphere on cs32 grid.
1615    
1616    checkpoint52d_pre
1617    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1618    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1619    
1620    checkpoint52c_post
1621    o Fixing OPTIONS files for use of exf:
1622      - ALLOW_ECCO not needed
1623      - ECCO_CPPOPTIONS.h should not be included from
1624        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1625        as has been the case in the past
1626      - All cal/exf related options are currently set in
1627        single header file. Should remain so until we
1628        agree on a consistent new policy.
1629    o Removed all CPP options for cal package.
1630      cal has no more CPP options.
1631    o modified STOREs in GAD_ADVECTION
1632    o corrected key comp. for passkey
1633    
1634    checkpoint52b_post
1635    o new version: "thsice" of thermodynamic sea-ice pkg:
1636     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1637     - modify fluxes but do not change theta directly;
1638     - light cleaning of bulk_force pkg (still needed with thsice).
1639     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1640       + output_thsice.txt to test thsice & bulk_force pkgs.
1641    o put back grid & coriolis monitor output.
1642    checkpoint52b_pre
1643    
1644    o call "do_the_model_io" at the beginning (=> dump initial state)
1645    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1646    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1647      (need info on NUMBER_OF_PTRACERS)
1648    o missing PTRACERS headers in some routines
1649    o default tamc.h in pkg/autodiff supposed to crash
1650      to ensure proper customization
1651    
1652    checkpoint52a_post
1653    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1654      - moved surfaceTendencyTice from pkg/seaice to main code
1655      - subroutine FREEZE_SURFACE now limits only surface temperature
1656        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1657        => new output.txt for global_ocean.cs32x15 & global_with_exf
1658      - keep the old version of FREEZE for backward compatibility;
1659        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1660      - corresponding modifs for TAF directives
1661    o added surface flux output variables to TIMEAVE_STATVARS
1662    o time-averaged output for pkg/ptracers
1663    o fix problem with ECCO-related divided adjoint
1664      snapshot file was missing some ad-variables,
1665      but no warning issued by TAF
1666    
1667    checkpoint52a_pre
1668    o some bug fixes for #undef REAL4_IS_SLOW
1669    
1670    checkpoint52 = ecco_c52_e35
1671    o after testing adjoints of checkpoint51u_post
1672    
1673    checkpoint51u_post
1674    o this is the post-merge tag of the ecco-branch
1675      (needs another clean checkout and re-testing)
1676    o various natl_box_adjoint configs and results
1677      but no input fields
1678    o obcs adjoint not yet merged!
1679    o adding ECCO global 1x1 and 2x2 degree configs
1680    o updated/extended some store directives for seaice
1681    o pkg/ecco now containes ecco-specific part of cost function
1682    o top level routines the_main_loop, forward_step
1683      supersede those in model/src/
1684      previous input data.cost now in data.ecco
1685      (new namelist ecco_cost_nml)
1686    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1687    
1688    checkpoint51t_post
1689    o this is the pre-merge tag of the ecco-branch
1690    
1691    checkpoint51s_post
1692    o cleanup: removed various obsolete #define-s
1693    o pkg/grdchk
1694      - renamed 'ph-grd 3' to 'grad-res'
1695      - merged from ecco-branch
1696        (remaining bug fixes for obcs gradient checks)
1697      - additional high-precision output for testreport
1698        (grep for 'precision_grdchk_result')
1699    
1700    checkpoint51r_post
1701    o cleaned up or removed CPP_OPTIONS.h files
1702    o updated results for some of the tests to reflect the new
1703      optfiles (-ieee: -O0 instead of -O3)
1704    
1705    checkpoint51q_post
1706    o cd_code:
1707      - moved cd_scheme.F -> cd_code_scheme.F
1708      - separate read_checkpoint from cd_code_ini_vars.F
1709      - separated cd_code part from write_checkpoint
1710      - updated AD_SOURCE, generated .flow
1711      - added CD_CODE_VARS.h to the_main_loop
1712      - Moving cd_code specific store dir.s to pkg/cd_code
1713    o ctrl package totally restructured
1714      - pack/unpack now optional and decoupled from
1715        xx_/adxx_ I/O
1716      - ctrl_pack/unpack cleaned
1717        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1718      - confined inclusion of AD_CONFIG.h to where necessary.
1719    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1720    
1721    checkpoint51p_post
1722    o create initial cd_code package
1723      - WARNING: the initialization of fields within packages
1724        is broken because INI_FIELDS (where READ_CHECKPOINT is
1725        called) is called *before* PACKAGES_INIT_VARIABLES.
1726        This seems to be backwards since
1727        1) its important to initially zero the entire field including
1728           the "halo" region
1729        2) zeroing needs to be done *before* reading pickup info
1730           and the pickup call might or might not happen in any
1731           particular run
1732      - this needs an overhaul for R2
1733    o cleanup verification/*/code/GMREDI_OPTIONS.h
1734    o cleanup testreport
1735    
1736    checkpoint51o_post
1737    o bringing AD-related verif's up to date with genmake2
1738      - carbon/
1739      - global_ocean.90x40x15/
1740      - hs.94.1x64x5/
1741      - (front_relax/ )
1742    o (more) consistent directory structure for AD-related verif.'s
1743    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1744    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1745    o bug fix in find_alpha.F for MDJWF:
1746      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1747        change rho -> rho-rhoConst
1748      - replace call find_rho to find_rhonum
1749    o initialisation of rFlx extended to full array (required by TAF)
1750      and shifted to thermodynamics
1751    o removed PTRACERS.h in ptracers routine
1752    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1753    o Correcting initialisations for fVerU, fVerV.
1754    o helping TAF to recognize dependency on kUp for
1755      fVerU, fVerV
1756    o Replacing delZ by delR in pkg/ctrl/
1757    checkpoint51o_pre
1758    
1759    o undid all of cp51 pending some cleanups and discussion
1760    o added the [#include "AD_CONFIG.h"] statement to all files that need
1761       it for adjoint/tl #defines
1762     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1763     o removed tools/genmake since it no longer works
1764    
1765    checkpoint51n_post
1766    o modifications to make FREEZE flux visible to pkg/kpp
1767      - moved surfaceTendencyTice from pkg/seaice to main code
1768      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1769      - subroutine FREEZE now limits only surface temperature
1770        (this means new output.txt for global_ocean.90x40x15,
1771         global_ocean.cs32x15, and global_with_exf)
1772    o added surface flux output variables to TIMEAVE_STATVARS
1773    
1774    checkpoint51n_pre
1775    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1776    o added [#include "AD_CONFIG.h"] to all files that use the following
1777      defines:
1778      - ALLOW_ADJOINT_RUN
1779      - ALLOW_TANGENTLINEAR_RUN
1780      - ALLOW_ECCO_OPTIMIZATION
1781    
1782    checkpoint51m_post
1783    o incorporating changes to get TAMC/TAF working in genmake2
1784      - added new TAMC/TAF targets to the Makefile
1785      - various cleanups related to package handling
1786      - these changes should have no impact on the forward model
1787    
1788    checkpoint51l_post
1789    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1790     - faster algorithm for cal_addtime.F
1791     - higher precision arithmetic, where needed
1792     - pkg/exf *startdate variables changed from calendar date to
1793       model integration time
1794    
1795    checkpoint51l_pre
1796    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1797    o enable to apply restoring on S & T only in a latitude band.
1798    o update output (external_forcing_surf modif. change truncation errors)
1799       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1800    
1801    checkpoint51k_post
1802    o change default to: useNHMTerms=.FALSE.
1803     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1804       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1805     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1806        exp1, ideal_2D_oce
1807     - change data file of oceanic exp (leave the results unchanged for now)
1808       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1809    o set gravitySign automatically according to the vertical coordinate used
1810      (and change sign: back to "logical" value: +1 when R increases downward)
1811    o added an include barrier to the default CPP_OPTIONS.h and
1812      removed the #include "PACKAGES_CONFIG.h" from it
1813    o fix a bug in mom_fluxform (from chk51j_post)
1814    
1815    checkpoint51j_post
1816    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1817    o adjusted some flow directives (dynamics, thermodynamics)
1818    o added cubed-sphere case to test cost function
1819    o heckpoint_lev?_directives.h now include
1820      pkg-specific directives, whenever those are enabled.
1821    o Moving pkg-specific flow directives to corresponding pkg
1822      Moving pkg-specific differentiation list to corresponding pkg
1823      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1824      ---> conventions are
1825           - pkg_ad.flow
1826           - pkg_ad_diff.list
1827           - pkg_ad_check_lev?_dir.h
1828    
1829    checkpoint51i_post
1830    o merge of the branch-genmake2
1831      - knowingly breaks the older genmake
1832      - automatic generation of all ALLOW_${PKG_NAME} defines
1833      - new testreport supersedes older testscript
1834    o large number of package inclusion and header cleanups
1835    checkpoint51i_pre
1836    
1837    o new output for adjoin of global ocean vector invariant
1838    o fix for checkpoint of thermodynamic seaice and bulk_force
1839    o Steph gchem various cleanups
1840    
1841    checkpoint 51h_pre
1842    o fixed some single quotes
1843    o modify gchem pkg to be more versatile
1844    o modifications to clean up dic pkg
1845    o add pkg/cfc
1846    
1847    checkpoint51g_post
1848    o provide links for ARPACK and ADM*TLM
1849    o start removing verification/vero/
1850    o update AD-related stuff
1851      (in particular some IF-statements in model/src/ routines)
1852    o adding to verification/global_ocean.90x40x15/ adjoint of
1853      vector invariant setup
1854    
1855    checkpoint51f_post
1856    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1857    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1858      of tracer Green's fucntions for ocean inversion project.
1859    
1860    checkpoint51f_pre
1861    o Added on-the-fly spatial interpolation capability
1862        "USE_EXF_INTERPOLATION" to pkg/exf.
1863      - This is a temporary Cartesian-grid hack until
1864        the super-duper ESMF coupler becomes available.
1865      - See verification/global_with_exf/README for usage example.
1866      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1867        flags and modified pkg/seaice accordingly.
1868    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1869        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1870        non-local transport term.
1871    
1872    checkpoint51e_post
1873    o pkg/mom_vecinv:
1874      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1875      - add time-ave diagnostic of vorticity advection.
1876    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1877    o atmospheric geopotential: - include water vapor effect;
1878                                - use p^kappa in p* scaling.
1879    o land pkg: read initial state from files.
1880    o AIM : add stratospheric drag in the upper level
1881    
1882    checkpoint51d_post
1883    o change function ILNBLNK (=> last non-blank char.) to return zero
1884      (instead of the string length) when the string. char is empty
1885    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1886    o modif's to restore TAMC compatibility
1887      - avoid "_d" constructs in PARAMETER declarations
1888      - avoid interrupting lines by comment lines
1889    o Use cluster local disks for purely local I/O
1890      vs. globally visible disks needed for ctrl stuff
1891      (merged from ecco-branch)
1892      - new active_file_loc... and mdsio_..._loc routines
1893      - affected packages: autodiff, ctrl, grdchk, mdsio
1894    
1895    checkpoint51c_post
1896    o introducing integer flag debugLevel
1897      - debLevZero: suppress all output
1898      - debLevA: standard
1899      - debLevB: equivalent to current debugMode=.TRUE.
1900    o introducing pathname variable mdsioLocalDir for mdsio
1901      that can be specified at runtime
1902      (relevant for cluster I/O to local disk)
1903    `
1904    >>>checkpoint51b_post
1905    adjoint of ptracers
1906    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1907    o extended state in checkpoint_lev?, etc.
1908    o alternative ctrl/cost with tr1 or ptracer
1909    o new comlev1_bibj_ptracers
1910    o new ptracers.flow
1911    o made ptracers_forcing same as external_forcing_s
1912    o added verification for adjoint with ptracers
1913      - adm. grdchk fail so far
1914      - tlm. grdchk OK
1915      - checked tapelev/comlev recomputations: OK
1916    <<<checkpoint51b_pre
1917    
1918    checkpoint51a_post
1919    o added code for biogeochemistry package
1920      - new pkgs: dic, gchem
1921      - new subroutine in ptracers
1922    o modify code for biogeo packages
1923      - in model/src and pkg/ptracers
1924    
1925    checkpoint51
1926    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1927      - autodiff, ctrl, exf, grdchk, seaice
1928      kept separate packages
1929      - cost, ecco, obcs
1930    o updating verification/internal_wave, verification/lab_sea
1931      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1932    
1933    checkpoint50i_post
1934    o Preparing next differentiable checkpoint and sync
1935      of MAIN vs. ecco-branch
1936      - 1st step: this one is differentiable
1937      - 2nd step: next(! not this) checkpoint will have updated packages
1938                  from ecco-branch)
1939    
1940    checkpoint50h_post
1941    o new package "land": provide surface BC for AIM.
1942    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1943    o AIM: use true log-P extrapolation for near surface temp (= as in
1944        F.Molteni paper) ; update aim.5l_cs output.
1945    o New variable in PARM03 for more flexible pickups
1946    o somewhat cleaned package initialisation sequence for
1947      ctrl/ cost/ ecco/ in packages_... routines
1948    
1949    checkpoint50g_post
1950    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1951      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1952      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1953        made the default because of faster convergence than ADI
1954    
1955    checkpoint50f_post
1956    o exf totally restructured
1957      - replaced all exf_set_ routines by one generic exf_set_gen.F
1958        and made sure it's still differentiable
1959      - split exf_getffields.F into new exf_bulkformulae.F
1960      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1961      - updated adjoint/makefile and relevant verif. accordingly
1962    
1963    checkpoint50f_pre
1964     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1965          + change Evap over land. (update aim.5l_cs output)
1966     o added missing .cvsignores and made uniform across expts
1967     o changed configuration of tidal_basin_2d expt
1968     o added pkg/debug functions for tracing code in fatal crashes
1969     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1970     o new fn in pkg/monitor to stop model if solution grows too big
1971     o removed lots of single quotes from comments
1972    
1973    checkpoint50e_post
1974    o make KPP work with PTRACERS
1975     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1976       nearly a copy of kpp_transport_s
1977     - there is no analogue to SurfaceTendencyS, so I have to use
1978       gPtr(of the surface layer) instead
1979    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1980    checkpoint50e_pre
1981    
1982    checkpoint50d_post
1983    o change kpp output from multiple-record state files to single-record state
1984      files analogous to write_state.F
1985    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1986      analogous to the cg2d-related output.
1987    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1988      so that writing to internal file fn (with length 512) fails.
1989    checkpoint50d_pre
1990    
1991    checkpoint50c_post
1992    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1993    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1994    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1995    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1996    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1997    
1998    checkpoint50c_pre
1999    Merging from release1_p13:
2000    o bug fix for pkg/seaice dynamic solver
2001    o Added SEAICE_initialHEFF to pkg/seaice
2002    
2003    checkpoint50b_post
2004    o store u*,v* in gU,V instead of in guNm1,gvNm1
2005    o in order to put the momForcing out of the Adams-Bashforth:
2006      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2007      to timestep.F
2008    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2009    o re-generate output for highly sensitive test-exp:
2010       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2011    
2012    checkpoint50b_pre
2013    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2014    o corrected CPP option mismatch in exf_Bulk... functions for case
2015      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2016    
2017    checkpoint50a_post
2018    o Bug fix for merging between c50 and KPP.
2019      ikey was passed from thermodynamics to kpp_calc via
2020      common block rather than being recomputed in kpp_calc,
2021      in contradiction with new key itdkey.
2022      New key ikppkey created, and tamc.h headers updated.
2023    
2024    checkpoint50
2025    - 2nd step of merge with ecco-branch:
2026      merge changes in ecco-branch back into main trunk
2027    - bug fix in find_alpha
2028    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2029    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2030    - merged some sliced AD support routines
2031    
2032    checkpoint49
2033    merged from ecco-branch:
2034    o exf:
2035      - Enable initialisation of forcing fields to constant
2036        (runtime) values.
2037      - in exf_getffields.F
2038        Reduce i-/j-loop to interior domain, discarding overlaps.
2039        That also fixes wrong TAF-key computations for key_1, key_2
2040        with bulf formulae.
2041      - exf_init.F modify #ifdef for exf_init_evap
2042      - exf_getffieldrec.F, ctrl_getrec.F
2043        The following INT-usages are not safe:
2044          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2045          fldcount = int(fldsecs/fldperiod) + 1
2046        and were modified.
2047    o autodiff: checkpoint_lev...
2048      - updated storing for bulk formulae (some arrays were missing)
2049      - added state for seaice package
2050      - synchronized with main branch
2051    o DIVA:
2052      Modif.s in
2053      - the_main_loop.F
2054      - the_model_main.F
2055      and added cost_final_restore.F cost_final_store.F
2056      o With these changes, it is possible to fully separate
2057        the first forward run to compute the cost function (mdthe_main_loop)
2058        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2059        into separate model executions.
2060        This enables better tuning of DIVA to given queue sizes.
2061      o Loss of cost function value in consecutive DIVA runs is
2062        fixed by storing to 'costfinal' file.
2063      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2064        beginning/end of adjoint integration is accounted for.
2065      The current changes apply to TAF-1.4.26.
2066      TAF has one remaining bug, requiring one manual change
2067      (see MITgcm manual).
2068    o cal: synchronized between MAIN and ecco-branch
2069    
2070    checkpoint48i_post
2071    o Changes to restore differentiability of code w.r.t. previous tag
2072      (mostly adding new routines to make list and replacing
2073      pressure by totPhiHyd).
2074    o Updated and merged grdchk package
2075      - has both ADM and TLM checks
2076      - works for single- and multi-proc.
2077      - output cleaned
2078      - worked successfully for parallel DIVA
2079    o genmake:
2080      - Adding -platform=SP4
2081      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2082    o Modif. for DIVA:
2083      ctrl_unpack should not be called in intermediate DIVA interval.
2084      (similar thing would apply for active files such as
2085      tbar, sbar, psbar, which should not be reinitialised;
2086      only relevant for ecco-branch)
2087    
2088    checkpoint48h_post
2089    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2090    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2091    o Added SEAICE_initialHEFF to pkg/seaice
2092    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2093    
2094    checkpoint48g_post
2095    --- EOS:
2096    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2097      store total Potential in totPhyHyd for diagnostics & EOS.
2098    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2099    --- Pressure/geopotential gradient:
2100    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2101    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2102      ( changes results of global_ocean_pressure )
2103    o NLFS + z-coord.: add eta*Rho' contribution.
2104    o accurate phiHyd when using interface-W at the middle between 2 centers
2105     ( changes results of ideal_2D_oce )
2106    o includes r* 2nd term in potential gradient.
2107    
2108    checkpoint48f_post
2109    Merging from release1_p12:
2110    o Modifications for using pkg/exf with pkg/seaice
2111      - improved description of the various forcing configurations
2112      - added basic radiation bulk formulae to pkg/exf
2113      - units/sign fix for evap computation in exf_getffields.F
2114      - updated verification/global_with_exf/results/output.txt
2115    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2116      (SBO) core products, including oceanic mass, center-of-mass,
2117      angular, and bottom pressure (see pkg/sbo/README.sbo).
2118    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2119      to avoid negative values in shallow regions.
2120      - updated verification/natl_box/results/output.txt
2121      - updated verification/lab_sea/results/output.txt
2122    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2123    o Added useSingleCpuIO option (see PARAMS.h).
2124    o Updated useSingleCpuIO option in mdsio_writefield.F to
2125      work with multi-field files, e.g., for single-file pickup.
2126    o pkg/seaice:
2127      - bug fix in growth.F: QNET for no shortwave case
2128      - added HeffFile for specifying initial sea-ice thickness
2129      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2130    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2131      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2132    o pkg/seaice:
2133      - adjoint-friendly modifications
2134      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2135    
2136    checkpoint48e_post
2137    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2138    o dynamics: change definition of computational domain & adapt mom_fluxform
2139      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2140    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2141        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2142        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2143        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2144        inverted_barometer solid-body.cs-32x32x1
2145      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2146    
2147    checkpoint48d_post
2148    o in preparation for r*:
2149     a) use pre-computed gradient of hydrostatic potential:
2150        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2151     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2152        => affects results of glob_oce_pressure (different truncation error)  
2153      update output.txt of ideal_2D_oce & global_ocean_pressure
2154    
2155    checkpoint48d_pre
2156    o in preparation for r*:
2157      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2158      pass the 2 comp. of the grad. as arguments to momentum S/R.
2159      but for the moment, only used if it does not change the results.
2160    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2161    
2162    checkpoint48c_post
2163    Modifications in treatment of initial flux forcing controls
2164    to avoid extra storing of flux fields.
2165    
2166    checkpoint48c_pre
2167    o Added tidal_basin_2d experiment (currently 1D!)
2168    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2169    
2170    checkpoint48b_post
2171    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2172     (modification to pressure gradient not yet implemented)
2173    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2174      (for U & V) that are used for vertical advection of momentum.
2175    
2176    checkpoint48a_post
2177    o In preparation for r*, use temp. array to compute vertical transport
2178       in flux-form momentum pkg. => change results of few test-exp.
2179      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2180                        lab_sea, natl_box & plume_on_slope
2181    
2182    checkpoint48
2183    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2184    
2185    checkpoint47j_post
2186    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2187    o moved adexch from forward_step to addummy_in_stepping
2188    o added exch in ctrl_map_...
2189    o aveFreq.=0. at end of cost_final to avoid overwrite in
2190      reverse checkpointing loop
2191    o Yet more changes in gmredi:
2192      * adgmredi_calc_tensor
2193        avoiding all recomputation of gmredi_slope_limit
2194      * adgmredi_x/y/rtransport
2195        added flag for excessive storing to avoid recomp. of
2196        u/v/rtans, dTdx/y/z
2197        -> this is not really necessary and very memory-consuming
2198      * adgmredi_slope_psi:
2199        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2200      * gmredi_slope_limit
2201        re-activated full calculation of taperfct for case 'ac02'
2202    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2203    
2204    checkpoint47i_post
2205    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2206    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2207      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2208    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2209    o gmredi: fix few bugs.
2210    
2211    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2212    This will be a good checkpoint to plug into the ecco-branch.
2213    o few modif.'s to get latest version adjointed
2214      (mainly kick out code in ini_linear_phisurf)
2215    o modif's to run adjoint with exactConserv
2216    o case GM_BOLUS_ADVEC should be cleaned
2217      S/R gmredi_slope_psi should be cleaned
2218    o verification/carbon now has exactConserv=.TRUE.
2219    
2220    checkpoint47g_post
2221    o time-average AIM output: becomes independent from statvars time-average
2222      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2223    o After TAF bug fix:
2224      Tested adjoint of gmredi package.
2225      Tests were done with checkpoint47 rather than with latest
2226      checkpoint47f_post since the latter is broken for the adjoint
2227      verification/carbon/ contains both ADM and TLM gradient checks.
2228    Here they are, before they get changed/lost/stolen.
2229    Mostly modif.'s to fix numerical sensitivities.
2230    Gradient checks OK for
2231    - GM_taper_scheme:
2232      * clipping
2233      * ac02
2234      * linear
2235      * glw91
2236      * dm95
2237      * ldd97
2238    - GMREDI_OPTIONS:
2239      * GM_VISBECK_VARIABLE_K
2240      * GM_NON_UNITY_DIAGONAL
2241      * GM_EXTRA_DIAGONAL
2242      * GM_BOLUS_ADVEC
2243    in conjunction with data.gmredi parameters to be checked in
2244    in a few minutes under verification/carbon/code/
2245    
2246    checkpoint47f_post
2247    Merging from release1_p10:
2248    o modifications for using pkg/exf with pkg/seaice
2249      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2250        and SEAICE_EXTERNAL_FLUXES
2251      - pkg/exf CPP options EXF_READ_EVAP and
2252        EXF_NO_BULK_COMPUTATIONS
2253      - usage examples are Experiments 8 and 9 in
2254        verification/lab_sea/README
2255      - verification/lab_sea default experiment now uses
2256        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2257    
2258    checkpoint47e_post
2259    o created a tag prior to creating a branch
2260    
2261    checkpoint47d_post
2262    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2263      at the bottom boundary had an erroneous half slip boundary condition
2264    o added bottom drag and no slip boundary condition capabilities to
2265      oceanic pressure coordinates code
2266    o added new verification experiment global_ocean_pressure, this experiment is
2267      also described in the tutorial section of the manual
2268    checkpoint47d_pre
2269    
2270    checkpoint47c_post
2271    o Added a verification experiment for a global cubed-sphere ocean run
2272      -  verification/global_ocean.cubed32x32x30
2273      -  uses pkg/therm_seaice and pkg/bulk_forcing
2274    
2275    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2276    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2277      when using P-coordinate; only implemented for atmospheric config.
2278    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2279      NOTES: requires option NONLIN_FRSURF to be "#define".
2280    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2281    
2282    checkpoint47b_post
2283    Merging from release1_p9:
2284    o pkg/seaice
2285      - removed GOTO's and added taf directives
2286      - double precision constants to reduce the g77 (Linux)
2287        to F77 (SGI) differences reported in release1_p8
2288    o tools/genmake
2289      - added SGI options
2290    o verification/testscript
2291      - updated to that of checkpoint47a_post
2292    o verification/global_ocean.90x40x15/input/eedata
2293      - modified for SGI f77 compatibility
2294    o verification/lab_sea
2295      - added description of sea-ice model
2296      - added missing matlab routines
2297      - added test of thermodynamics parallelization
2298    
2299    checkpoint47a_post
2300    o new pkg: aim_v23
2301     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2302       for now, keep the same surface forcing as before.
2303     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2304     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2305     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2306    o add diagnostic of surface correction term in monitor output
2307    
2308    o bulk_force and therm_seaice
2309    - Two packages:  bulk_force (Bulk forcing)
2310      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2311    - Earlier integration from Stephaine Dutkiewicz
2312      and Patrick Heimbach.
2313    - Two ifdef statements for compile time,
2314       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2315    
2316    checkpoint47
2317    differentiable version of checkpoint46n_post
2318    o bug fix in quasihydrostaticterms
2319    o * "clean" adjoint code (in terms of extensive recomputations)
2320        can now be obtained for all GMREDI options (i.e. for
2321        - GM_VISBECK_VARIABLE_K
2322        - GM_NON_UNITY_DIAGONAL
2323        - GM_EXTRA_DIAGONAL
2324        - GM_BOLUS_ADVEC )
2325      * However, wrong gradient check problem remains unsolved.
2326      * New CPP options have been introduced for different
2327        tapering schemes
2328    o external_fields_load now part of differentiation list
2329    o pressure needs multiple storing;
2330      would be nice to have store_pressure at beginning or
2331      end of forward_step, e.g. by having phiHyd global (5-dim.)
2332      (NB: pressure is needed for certain cases in find_rho,
2333      which is also invoked through convective_adjustment).
2334    o recomputations in find_rho for cases
2335     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2336    o #define ATMOSPHERIC_LOADING should be differentiable
2337    o ini_forcing shifted to begining of initialise_varia
2338    o Incorporating QNVS line search routines into MITgcm
2339      (this is separate code, and therefore not under pkg)
2340      lsopt/, optim/
2341    o Updated verification/carbon/
2342      - #define GM_VISBECK_VARIABLE_K
2343      - GM_taper_scheme    = 'ldd97'    
2344    
2345    checkpoint46n_post
2346    Merging from release1_p8:
2347    o verification/natl_box:
2348      updating new external_fields_load routine
2349    o New package: pkg/seaice
2350      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2351      The sea-ice code is based on Hibler (1979-1980).
2352      Two sea-ice dynamic solvers, ADI and LSR, are included.
2353      In addition to computing prognostic sea-ice variables and diagnosing
2354      the forcing/external data fields that drive the ocean model,
2355      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2356      The implied surface heat flux is then stored in variable
2357      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2358      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2359      non-local transport term.  Because this call precedes model
2360      thermodynamics, temperature under sea-ice may not be "exactly" at
2361      the freezing point by the time theta is dumped or time-averaged.
2362      N.B.: fairly large differences in accuracy occur across
2363            different platforms/compilers; comparison between
2364            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2365            generated output gives:
2366       T           S           U           V
2367      C D M    c        m  s        m  s        m  s        m  s
2368      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2369      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2370      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2371    
2372      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2373    o GAD:
2374      - generated new common blocks to account for call of
2375        same gad routines with differing traceridentities
2376        (needed to modify tracerIdentity indices in GAD.h)
2377      - generated separate common blocks for case useCubedSphereExchange
2378        (Department of Futurology)
2379      - parameter lists to gmredi_?transport: added tracerIdentity
2380      - added new key indices to tamc.h
2381    o external_fields_load:
2382      - added this routine to TAF list
2383      - needed to make some common blocks global and additional storing
2384        along the same lines as exf package (checkpoint_lev?_directives.h)
2385    o exf:
2386      updated external forcing package
2387      - bug fixes carried over from ecco-branch
2388        (missing OBCS_OPTIONS.h in two routines)
2389      - enable easy to use "no forcing".
2390      - added exf I/O for atmospheric loading
2391      - added exf I/O for runoff data
2392      - transfered scaling between exf <-> MITgcm to exf namelist
2393    o Adding new verification experiment global_with_exf.
2394      This verification experiment is almost identical to the
2395      global_ocean.90x40x15 experiment, except that it uses
2396      the exf (and cal) package instead of the
2397      external_fields_load routine (cf README file).
2398    
2399    checkpoint46m_post
2400    o modified testscript to return -- when there are no lines of "%MON" output
2401    o added new flag "quasiHydrostatic" for QH mode
2402      and new routine quasihydrostaticterms()
2403    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2404      New routine: mom_u_coriolis_nh()
2405    o fixed sign of non-hydrostatic metric terms in u and v equations.
2406      Depend on correct sign of gravitySign.
2407    o added work.pc* to .cvsignore in aim directories using ifc
2408    o introduced flag for controllin non-hydrostatic metric terms
2409    o removed gravitySign from PARM04
2410    o switched to g77/ifc from pgf77 in aim experiments
2411    
2412    checkpoint46l_post
2413    o made convective adjustment work with pressure coordinates:
2414     - changed the direction of k-loop in convective_adjustment.F for the
2415       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2416     - adjusted the reference pressure k-index in convective_adjustment.F
2417     - adjusted the convection condition in convect.F (in analogy to
2418       calc_ivdc.F)
2419     - convective_adjustment no longer computes anything on the halos
2420     - removed the warnings about negative salinity from find_rho.F and
2421       find_alpha.F; instead the new routine look_for_neg_salinity, called
2422       at the beginning of find_rho, find_alpha, and find_beta, does a
2423       check of the entire slice, if CPP-option
2424       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2425    checkpoint46l_pre
2426    
2427    checkpoint46k_post
2428    o fixed the verification/global_ocean.90x40x15 experiment:
2429     - new bathymetry (the world according to A., JMC, and M.)
2430     - new initial fields and forcing fields (*.bin files)
2431     - new POLY3.COEFFS (for the next release one should switch to a full
2432       equation of state: JMD95P or MDJWF)
2433     - fixed several errors and redundancies in the data file
2434     - experiment uses looped cells
2435     - added matlab directory with diagnostic scripts for plotting of output
2436    
2437    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2438     - read AIM physics parameters from a file (data.aimphys)
2439     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2440    
2441    checkpoint46j_post
2442    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2443    o move wVel computation at the end of the time step, in S/R integr_continuity
2444    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2445    o update timeave pkg for wVel diagnostic.
2446    checkpoint46j_pre
2447    
2448    checkpoint46i_post
2449    o Clean up AIM package (and keep the results unchanged):
2450      include CPP_OPTION and use IMPLICT NONE in all routines ;
2451      declare all the variables _RL ; use _d 0 for all numerical constants.
2452      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2453    
2454    checkpoint46h_post
2455    o cleaned up the use of rhoNil and rhoConst.
2456      - rhoNil should only appear in the LINEAR equation of state, everywhere
2457        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2458        and the dynamical equations are all divided by rhoConst
2459    o introduced new parameter rhoConstFresh, a reference density of fresh
2460      water, to remove the fresh water flux's dependence on rhoNil. The default
2461      value is 999.8 kg/m^3
2462    o cleanup up external_forcing.F and external_forcing_surf.F
2463      - can now be used by both OCEANIC and OCEANICP
2464    checkpoint46h_pre
2465    
2466     Added code to convert surface volume flux (fresh water) into
2467     a mass flux when using P coordinates in the ocean (OCEANICP).
2468     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2469    
2470    checkpoint46g_post
2471    o Include a new diagnostic variable phiHydLow for the ocean model
2472      - in z-coordinates, it is the bottom pressure anomaly
2473      - in p-coordinates, it is the sea surface elevation
2474      - in both cases, these variable have global drift, reflecting the mass
2475        drift in z-coordinates and the volume drift in p-coordinates
2476      - included time averaging for phiHydLow, be aware of the drift!
2477    o depth-dependent computation of Bo_surf for pressure coordinates
2478      in the ocean (buoyancyRelation='OCEANICP')
2479      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2480        Theta, Salinity, and Pressure in the parameter list. This routine is
2481        presently contained in find_rho.F. This routine does not give the
2482        correct density for 'POLY3', which would be a z-dependent reference
2483        density.
2484    o cleaned up find_rho
2485      - removed obsolete 'eqn' from the parameter list.
2486    o added two new verification experiments: gop and goz
2487      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2488    checkpoint46g_pre
2489    
2490    checkpoint46f_post
2491    o Enable tangent linear (forward mode) gradient checks:
2492      - extended active file handling to g_... files
2493      - added TANGENT_SIMULATION to theSimulationMode
2494      - extended grdchk package accordingly
2495    o added tangent linear setup in verification/carbon/code_ftl
2496    o added adjoint setup in verification/front_relax/code_ad
2497    
2498    checkpoint46e_post
2499    o Added new equation of state -> MDJWF
2500      - EOS of McDougall et al., 2002, JAOT, submitted
2501      - caveat: the equation of state is only valid for a smaller (more
2502        realistic?) range of values than JMD95P/Z and UNESCO
2503      - added masks to the calculation of pressure in store_pressure
2504      - added more check values for density in check_eos (ini_eos.F), some of
2505        the old check values are out of the range of the MDJWF-eos, so don't
2506        expect perfect matches for those
2507    checkpoint46e_pre
2508    
2509    checkpoint46d_post
2510    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2511      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2512      case of pressure coordinates. eosType='JMD95Z' in
2513      combination with buoyancyRelation='OCEANICP' now causes an error.
2514    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2515      in find_alpha/beta.
2516    checkpoint46d_pre
2517    
2518    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2519      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2520    
2521    checkpoint46c_post
2522    o Changes necessary for ocean in p-coordinates
2523     -  Added new buoyancy relation = 'OCEANICP'
2524     -  Added new parameters = gravitySign (this used to be contained inside
2525        the factor dRdZ which I added when we first switched to R coordinates).
2526     X GM/Redi is not compatible (yet)
2527     X bottom drag and no-slip need to be debugged.
2528    checkpoint46c_pre
2529    
2530    checkpoint46b_post
2531    o Added new equation of state -> JMD95Z and JMD95P
2532      - EOS of Jackett and McDougall, 1995, JAOT
2533      - moved all EOS parameters into EOS.h
2534      - new routines ini_eos.F, store_pressure.F
2535    o Added UNESCO EOS, but not recommended because it requires
2536      in-situ temperature (see JMD95)
2537    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2538      unesco.f to be used with POLY3
2539    checkpoint46b_pre
2540    
2541    checkpoint46a_post
2542    o Added (atmospheric) pressure loading
2543      - new field in FFIELDS.h, etc...
2544      - new cpp flag ATMOSPHERIC_LOADING
2545    o Changed hFacC to _hFacC in calc_phi_hyd.F
2546    o Added SHORTWAVE_HEATING to some files for consistency
2547    checkpoint46a_pre
2548    
2549    checkpoint46
2550    further merges from release1_p5
2551    o new ctrl package
2552      - adopted from ECCO environment to enable optimization
2553      - added Eliassen Palm fluxes to controls
2554    o added Eliassen Palm flux controls to gradient check package
2555    o cost package
2556      - Compatible with new ctrl package
2557      - added Eliassen Palm cost hooks
2558      - modif's of existing cost functions
2559    o Adjoint-related bug fixes in kpp:
2560      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2561      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2562    o autodiff package
2563      - flow directives:
2564        + new for S/R do_the_model_io
2565        + enhanced for S/R checkpoint
2566        + new gmredi.flow
2567      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2568        disable adcommon.h/g_common.h by default.
2569      - fixed problem for adjoint of global_max
2570    o modified verification/carbon/
2571    o New setup for adjoint of global_ocean
2572    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2573    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2574    o incorporated hooks for sponge layer code (external_forcing.F)
2575    
2576    checkpoint45d_post
2577    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2578    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2579      (affects plume_on_slope "cg2d" output)
2580    o add new parameter deltaTfreesurf for free-surface time stepping
2581    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2582    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2583    o change phiMin in exp1 (to agree with documentation)
2584    o add new flags:
2585     - T,S forcing inside/outside Adams-Bashforth
2586     - turn off temp,salt advection and/or forcing
2587     - for each tracer, define internal flag for multiDimAdvection & A-B
2588    o monitor: change definition of KE to check conservation of Energy
2589    
2590    checkpoint45c_post
2591    o Removed f90 comments ("!")
2592    o Modified initialisations to enable exf package for MITgcm
2593      (without invoking ECCO_PACKAGE).
2594    o modifications to gradient check package (Martin Losch)
2595      - enable centered differences
2596      - modified format of standard output
2597    
2598    checkpoint45b_post
2599    o cleaned exchange calls in cg2d
2600    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2601    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2602      to configure barotropic setup (Martin Losch)
2603    o moved some initialisations within bi,bj loop in dynamics
2604      (TAF flow dependency)
2605    o in initialise_varia, moved call packages_init_variables
2606      before convective_adjustment_init
2607      (corresponding adjustment of TAF tape initialisation).
2608    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2609    
2610    checkpoint45a_post
2611    o compute Rho over the whole domain (extend iMin,jMin indices)
2612    o specific exchange for X-slice domain (case Ny=1)
2613    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2614    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2615    
2616    checkpoint44h_post = checkpoint45
2617    o Fix to restore differentiability:
2618      place at which packages_init_variables is called in
2619      initialise_varia is crucial for reverse control flow.
2620    o modifications in GMRedi to enable stable adjoint
2621      (corresponding modif's in thermodynamics, dynamics)
2622    o added missing hook for sponge layer code in external_forcing
2623    o modified test cost functions
2624    o storing in gad_advection (plus removal of write(0,*)!
2625    o missing headers TR1.h added in convective_adjustment routines
2626    o errorMessageUnit set non-equal zero in eeboot
2627      (conflict on some platforms, e.g. IBM SP3)
2628    o modified carbon verif.
2629    
2630    checkpoint44h_pre
2631    o vertical grid option: allow to put the Interface at the middle between
2632      2 cell-centers ; replace delZ in pkg/kpp by drF.
2633    o GM Advective form: Tracers are advected using the residual transport (=
2634      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2635    
2636    checkpoint44g_post
2637    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2638      results) ; ifdef missing in thermodynamics.F
2639    
2640    checkpoint44f_pre,checkpoint44f_post
2641    o added PTRACERS package
2642      This allows an arbitrary number of passive tracers to be integrated
2643      forward simultaneously with the dynamicaly model.
2644      + Implemented so far:
2645        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2646        - I/O and checkpointing
2647        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2648      + Not implemented so far:
2649        - KPP
2650        - OBCS
2651      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2652        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2653        line in data.pkg.
2654      + This package is disabled by default since it increases storage.
2655    
2656    
2657    o testscript: added -cleanup option
2658    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2659                 b) enable to filter 2D fields.
2660    
2661    checkpoint44e_pre,post
2662    o re-wrote convective adjustment to use pre-calculated weights
2663      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2664      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2665      Original calls to convect() still in place.
2666    
2667    chkpt44d_pre,post
2668    o added missing EXCLUDE_MONITOR flags
2669    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2670      (incompatible typ in MIN/MAX expressions caused problems
2671      on IBM SP3)
2672    o in genmake added variable MAKEDEPEND
2673      plus resetting for case SunOS
2674    o added timer_stats.c routine for IBM SP3
2675    o removed variables in dynamics
2676    !!! I forgot to create tag chkpt44d_pre !!!
2677    !!! But chkpt44d_pre = chkpt44c_post    !!!
2678    
2679    o real fresh water flux implemented with non-linear free-surface.
2680    
2681    chkpt44c_pre,post
2682    o few fix (mask in shap_s2, EmPmR in external_field_load,
2683      USE_NATURAL_BCS in solve_for_P);
2684    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2685    
2686    checkpoint44b_pre/_post
2687    o merge of relevant stuff from the ecco-branch:
2688      - genmake: removed $S64 overwrite for case SunOS
2689      - pkg/exf: update and corrections for field swapping and obcs
2690      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2691                  harmonized between ECCO and MITgcm
2692      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2693                      updated checkpointing_lev... lists for obcs
2694      - model/src: minor changes in forward_step, plot_field
2695                   added directive for divided adjoint in the_main_loop
2696      - pkg/mdsio: added mdsio_gl_slice
2697    
2698    o check parameters & config (chkpt44a_pre,post)
2699    o OBC and NonLin_FrSurf.
2700    
2701    checkpoint44
2702    o fix bug in mom_vi_del2uv
2703    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2704    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2705    o update AIM experiments (NCEP input files)
2706    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2707    o added some stuff for AD
2708    
2709    checkpoint43
2710    o added two new advection tests
2711    o added global 4x4 degree ocean test
2712    o added test of H&S94 with free surface on cube
2713    o some final mods for gradient check, adjoint,...
2714    
2715    checkpoint42
2716      Fixed AD-related problems:
2717    o Store directives up-to-date with re-arranged Adams-Bashforth
2718      (mainly thermodynamics.F)
2719    o New store directives for multi-dim. advection schemes
2720      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2721      * new common block and key passkey
2722      (mainly gad_advection.F)
2723    o Modified store directives for split of dynamics/thermodynamics
2724      for the case ALLOW_KPP
2725    o Cleaned argument list for timestep_tracer.F
2726    
2727    checkpoint41
2728    o re-formatted/added comments in prologues of key subroutines
2729      to work with protex
2730    
2731    checkpoint40
2732    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2733    o added FLT (floats) package from Arne along with demo. experiment
2734    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2735      implementation of forward-in-time forcing terms
2736    o more mods for non-linear free-surface including new variable
2737    o modified multi-dim method to work on cube
2738    o bug fix in KPP (from DM)
2739    
2740    checkpoint40pre9
2741    o added DST advection schemes
2742    o fix MPI bug on SGI's
2743    o modifications for non-linear free-surface
2744    o fixed conditionals for fixed flow/passive tracer only mode
2745    o added tension/strain form of stress tensor
2746    o changes to commenting of arguments for TAF/TAMC
2747    o added/updated many matlab scripts
2748    o added multi-dimensional advection method for tracers
2749      
2750    checkpoint40pre8
2751    o new package rw/
2752      Added method for dumping intermediate local arrays:
2753      mdsio_writetile - same as mdsio_writefield except works from inside
2754                        bi,bj loop
2755      mdsio_writelocal - same as mdsio_writetile except works for local
2756                         arrays
2757      write_local_r? - higher-level wrapper for mdsio_writelocal
2758      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2759      Example given at end of mom_vecinv.F that dumps some local arrays.
2760    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2761      control flux-form versus vector invariant code.
2762      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2763      or genmake -DISABLE ...
2764    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2765      (additional storing is now needed for case vecinv;
2766      currently nothing implemented to switch this storing off
2767      in case fluxform is used since no CPP flag available).
2768    
2769    checkpoint40pre7
2770    o bug fix in dynamics.F
2771      calc_viscosity called before k=1,Nr loop.
2772    o added some #ifdef's ALLOW_PASSIVE_TRACER
2773    o cleaned initialisations in ctrl_map_ini
2774      related to TAF
2775    
2776    checkpoint40pre6
2777    o split dynamics into thermodynamics & dynamics
2778    o corresponding split of calc_diffusivity into
2779      calc_diffusivity, calc_viscosity
2780      (kpp_calc_diff, kpp_calc_visc).
2781    o Added diffkr, kapgm to control variables
2782    o bug fix in gmredi_slope_limit for ldd97
2783    
2784    checkpoint40pre5
2785    o proper initialization of Adams-Bashforth time stepping
2786      + uses forward step for very first step of model (iter=0)
2787    o re-generated *all* output since almost all output is modified by this
2788      change (sorry but we've been putting this one off for about 2 years)
2789      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2790        *not* regenerated since they are already out of date and I don't
2791        want to create the impression that they are suddenly working.
2792    o removed KAP stuff for DEC's
2793    o modified/added many .cvsignore files in */code and */input
2794    o added new expt "solid-body.cs-32x32x1"
2795      + this uses an alternative form of ini_curvilinear_grid.F which
2796        is not necessarily any better than the current one...
2797    
2798    checkpoint40pre4
2799    o added re-initialisations of utrans,vtrans,rtrans in
2800      calc_common_factors which are crucial for TAF.
2801    o extended iMin,jMin range for calc_common_factors,
2802      calc_diffusivity
2803    o added option ALLOW_PASSIVE_TRACER
2804    o a few minor updates and fixes
2805    
2806    checkpoint40pre3
2807    o created calc_gtr1.F for gad package
2808    o split the_main_loop and re-introduced forward_step
2809    o some recomputations of nIter0 for TAMC
2810    
2811    checkpoint40pre2
2812    o Updated to latest branch of AJA, JMC
2813    o Added gradient check package
2814    o Added routines for passive tracer handling
2815    o Added carbon sequestration sensitivity experiment
2816    
2817    checkpoint39
2818     o Modifications and fixes to support TAMC
2819       (mainly missing or wrong directives)
2820     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2821       in addummy_in_stepping
2822     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2823     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2824     o Included following packages:
2825       cal: calendar
2826       exf: external forcing
2827       ecco: essential routines to control use of cal, exf
2828             (NB: this is not the full ECCO environment)
2829     o disabled some packages by default in genmake
2830    
2831    checkpoint38
2832     o see notes_c37_adj.txt
2833     o corrected wrong layer index in external_forcing_t
2834     o replaced the_main_loop/forward_step by the_main_loop
2835     o removed forceoutput from write_state
2836       (replaced criteria for initial/final state)
2837     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2838    
2839    checkpoint37
2840     o mdsio.F routine split and packaged in pkg/mdsio
2841       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2842        used unless genmake -disable=mdsio)
2843     o allow a more precise surface-geopotential gradient for the atmosphere
2844       taking into account the change in space of Alpha (=1/rho) at the surface.
2845     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2846       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2847     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2848       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2849       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2850     o Time-Average diagnostics defined as a pseudo package "timeave".
2851     o pickup files : old pickup (before c35) did not work with new code (c35
2852       and after) unless activating 2 commented lines in initialise-varia.
2853     o Non-Hydrostatic pickup file Pb fixed.
2854     o bug with Rigid-lid version (since c35) fixed.  
2855    
2856    checkpoint36
2857     o implement Crank-Nickelson barotropic time-stepping
2858     o recover Time-Average diagnostics
2859     o fix Pb in checkpoint (PR#19)
2860     o AIM become a standard package ; clean unused CPP_kees
2861    
2862  checkpoint35  checkpoint35
2863   o subtantial rewrite of dynamics.f   o subtantial rewrite of dynamics.f
2864   o allows staggered time-stepping   o allows staggered time-stepping

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