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revision 1.171 by jmc, Sun Jul 13 20:32:42 2003 UTC revision 1.694 by jmc, Fri Jul 7 20:17:38 2006 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
8    
9    checkpoint58k_post
10    o testreport:
11     - always build in dir. "build" (if not there, mkdir build instead of building
12       & running in input)
13     - run in dir run (if it exists), in build otherwise.
14     - call prepare_run (if input/prepare_run exists)
15     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
16    o pkg/exf modifications to interpolation and rotation routines for more
17       reasonable treatment of North Pole singularity: for tracers North Pole
18       value is set to northernmost zonal-mean value, for zonal velocity it is
19       set to zero, and for meridional velocity it is set to northernmost value.
20    o pkg/exf/exf_check_range.F
21     - add tile index to diagnostics and move stop statement to the very
22       end of the routine.
23    o pkg/diagnostics: (diagnostics_main_init.F)
24      define title of isomorphic variables according to the current config.
25    o pkg/thsice with pkg/seaice dynamics:
26    - fix domain of computation (interior only, required for exf) and do exchanges
27    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
28    o towards a standard way of dealing with multi-threading in MONITOR
29      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
30    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
31       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
32    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
33    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
34    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
35       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
36    o tracer advection:
37     - clean-up and simplify calc_common_factors.F
38     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
39       advection subroutine (but still not used within DST advection S/R)
40    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
41    
42    checkpoint58j_post
43    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
44      from file (collects calls previously in FORWARD_STEP)
45    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
46    o adjoint store dir. adjusted accordingly
47    o genmake2
48      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
49    
50    checkpoint58i_post
51    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
52      on wind stress (SEAICEstressFactor defaults to 1.)
53    o Total number of Timers is finite (<=40): comment out 2 non-essential one
54      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
55    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
56      on CS-grid: no longer loosing mass.
57    o exf & curvilinear-grid: no longer modify longitude xC & xG.
58    o pkg/ggl90: fix sloppy output and fix a bug
59    o pkg/seaice: added SEAICEuseEVPpickup parameter
60      - Set to false in order to start EVP solver with
61        non-EVP pickup files when using SEAICEuseEVP
62      - fix sign error in diffusion in seaice_calc_rhs
63    
64    checkpoint58h_post
65    * Modifications for bottom topography control
66      o replace hFacC by _hFacC at various places
67      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
68      o add non-self-adjoint cg2d_nsa
69      o update autodiff support routines
70      o re-initialise hfac after ctrl_depth_ini
71      o works for 5x5 box, doesnt work for global_ocean.90x40x15
72    * Adding verification for 5x5 box (4-layer) bottom topography control
73    
74    checkpoint58g_post
75    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
76       used for mean seasonal cycle, mean diurnal cycle); add an example
77       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
78    o pkg/ggl90:
79      - add parameter (minimum surface kinetic energy)
80      - fix bug (avoiding division by zero)
81    o couple pkg/thsice to pkg/seaice:
82      - modify advection in seaice to accomodate new scalar fields to be advected
83      - only muliDimAdection scheme work with seaice/thsice
84      - mapping of thsice-variables to seaice-variables, back and forth
85      - does not break the verification experiments, but does not give the
86        desired results either
87    o pkg/seaice
88      - make (default) second order advection a bit less confusing?
89    
90    checkpoint58f_post
91    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
92      to pkg/seaice):
93      - new routines thsice_map_exf and thsice_get_exf provide the interface
94      - add an additional formal parameter to thsice_solve4temp
95    o pkg/exf:
96      - add new fields wspeed, snowprecip (to be able to couple to thsice)
97      - correct Stefan-Boltzmann constant
98      - new parameter for longwave surface emittance
99      - separate some stuff from exf_bulkformulae into new routines  
100        exf_radiation, exf_wind
101      - add new parameters and constants: longwave emissivity for ocean, ice
102        and snow, evaporation parameters over ice
103      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
104        either wind from stress or stress from wind
105    o pkg/thSIce:
106    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
107    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
108       and THSICE_CALC_THICKN
109    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
110    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
111      to make debugging easier.
112    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
113    o pkg/bulk_force:
114      - clean-up comments and parameters ;
115      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
116    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
117      generate new output for test-experiment: aim.5l_cs.thSI
118    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
119      testreport accordingly
120    
121    checkpoint58e_post
122    o SEAICE_CGRID adjoint done
123    o R_STAR adjoint implemented.
124      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
125      * need to sort out init. of h0facc, etc.
126    o Make pkg/profile fully independent of ecco,cost, etc. stuff
127      to be able to use it in pure forward.
128    
129    checkpoint58d_post
130    o upgrade simple test-experiment to tutorial example:
131     step.1: duplicate the experiment and (step.2) will remove the old copy.
132      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
133      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
134      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
135      tutorial_global_oce_biogeo    <- copy of dic_example
136      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
137      tutorial_plume_on_slope       <- copy of plume_on_slope
138      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
139      tutorial_global_oce_optim     <- empty for now (David ?)
140      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
141     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
142    o correct a sign problem in cost_scat.F
143    o obcs and ptracers: fix boundary conditions for advections schemes
144      with larger stencil
145    o thsice adjoint: start
146    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
147      completeness
148    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
149      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
150    o ptracers adjoint:
151      * avoid extensive recomputatations
152      * fix missing re-init. of gptr (missed by TAF)
153    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
154      me to turn off the excessive output to STDOUT that this package produces
155    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
156      and add those terms in Vector-Invariant formulation.
157    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
158      if the control period (xx_hfluxperiod etc) is 0
159    o in profiles pkg, clean routines and fix details
160    o in ecco pkg, reading ssh data:
161      fix problem in case the model does not start at iter0=0
162    o fix mnc-pickup/restart for ptracers
163    o new package prifiles:
164      code to compute profile-based cost by Gael Forget
165      (modifs in ecco, ctrl, autodiff)
166    o Benign bug fix in initialization (spotted by M. Mazloff) of
167      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
168    
169    checkpoint58c_post
170    o adjoint: finish NLFS adjoint and provide reference output in
171      verification/global_ocean.90x40x15/results_ad_nlfs
172    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
173      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
174      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
175      with SEAICE_CGRID defined.
176    o move calendarDumps from "data" to "data.cal" and clean-up the code
177      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
178    o add useEXF & useCAL flags (for now, set in hard-coded way)
179    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
180      (were missing in NH mode, and wrong in quasihydrostatic mode).
181      waiting for Chris updated version of calc_gw to add those CALLs.
182    o fix bug in quasihydrostatic S/R ;
183      add a test for this option: global_ocean.90x40x15.qshyd
184    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
185      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
186    o add on/off flag useOffLine for package OFFLINE
187    o seaice:
188      - modify advection so that it works also on the C-grid
189      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
190        problem in multi-tile runs with C-grid
191      - add flags for clipping ice velocities and/or masking solver forcing
192      - fix drag (ocean on ice) formulation and a bug that caused noise in the
193        C-grid solver
194      - added a few comments to seaice_diffusion.F
195      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
196        are now exclusive)
197      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
198        required re-ordering the code a little:
199       + make DAIRN global variable (defined in SEAICE)
200       + move computation of the viscosities eta and zeta into a new separate
201         routine (because I need to recompute them in seaice_ocean_stress.F)
202    
203    checkpoint58b_post
204    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
205      update output.txt of exp. aim.5l_cs.thSI
206    o various mnc cleanups and improvements:
207      + shrink lookup tables by factor of ~4
208      + better error reporting when running out of lookup space
209      + able to handle longer path/file names (up to 500 chars)
210    o adjoint:
211      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
212      - TBD: "hidden" mom_vecinv recomp. in dynamics
213    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
214     (allow to differentiate between forcing components using new integer flags:
215      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
216     and add new flag to put Dissipation tendency out of Adams-Bashforth.
217    o ecco
218      - enable trend removal from SSH anomaly obs.
219    o adjoint
220      - a fix for PmEpR when #undef EXACT_CONSERV
221      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
222      - try to fix "hidden" recomp. in forward_step for NLFS
223        (NLFS seems broken sometimes after I checked it in)
224    o seaice:
225     - add c-grid version of the dynamic solver:
226       + three new routines that are the c-grid substitute lsr, dynsolver
227         and ostres
228       + put a few fields that were local to dynsolver into global common
229         blocks, so that I can move the computation of stresses etc into
230         seaice_lsr (saves coding but may break the adjoint).
231     - replace more hardwired parameters by runtime parameters
232     - add ice masks that mask the rhs of the implicit solvers where there
233       is no ice (commented out in seaice_dynsolver, because i am not sure
234       if this works properly), eventually this should replace the clipping
235       of ice velocities in seaice_dynsolver to +/-40cm/s.
236    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
237      include it only where its needed
238    o move balancing of fluxes before the call of external_forcing_surf
239    o seaice:
240      - correct units of turning angles (now they are really in degrees)
241      - move computation of GWATX/Y out of main routine into dynsolver
242      - initialize GWATX/Y in seaice_init
243    o Apply mask on Fresh-Water flux (needed for SSH forcing).
244      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
245    o seaice: add runtime flags for turning angles (default to zero)
246    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
247      and trend from exf forcing and ctrl control adjustments
248    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
249      (since checkpoint57x_post)
250    o change the default rotation period to 86164.s = the Earth rotation
251    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
252      and based on a reference stratification. Tested within hs94.cs-32x32x5.
253    o seaice advection: add code for choosing between the default (2nd order
254      central differences) and multiDim advection schemes provided by
255      pkg/generic_advdiff
256    o seaice:
257      - removed all references to SEAICE_GRID.h fields from
258        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
259        (cubed-sphere configuration will change a little)
260      - grid computations in seaice_init are obsolete now.
261      - cleaned up code a little so that is easier to read (hopefully).
262      - added new (better?) discretizations of default advection and diffusion
263        (turn on with SEAICEuseFluxForm)
264      - replace 1 in 3d global fields by kSurface in growth.F
265      
266    checkpoint58a_post
267    o seaice:
268      - bug fix in advect.F
269    o shelfice:
270      - separate shelfice load anomaly from pload (breaks with time
271        dependent forcing), => introduce constant field shelficeLoadAnomaly.
272        Its default is 0., but it may be computed more cleverly from (unknown)
273        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
274        done offline. A good approximation of the pressure load anomaly is
275        necessary to avoid large initial adjustment processes underneath
276        deep-reaching shelfice.
277      - small fix in ISOMIP shelfice_thermodynamics
278      - add more sophisticated thermodynamics of Hellmer (1989), this is
279        now the default
280      - give a few constants more intuitive names
281    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
282      if bulk formulae are used in long integration (especially EmPmR). Turn
283      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
284      if balancePrintMean, the imbalance that is substracted is printed to
285      STDOUT.
286    o fix bug (typo) in obcs_apply_eta.F
287    o add a new package shelfice which enables us to model the circulation
288      underneath shelf-ice with draughts of hundreds of meters.
289     - works
290     - to do: + include improved thermodynamics
291              + check whether kSurfC (from model/inc/SURFACE.h) can be used
292                instead of new field kTopC
293              + can we use topoFile, Ro_surf and existing code in ini_depth.F
294                instead of new field R_shelfIce and new code in ini_depth.F
295                and ini_mask_etc.F?
296              + adjust vertical mixing schemes?
297    o seaice pkg:
298     - add a cpp-flag to include a simple formula for a salinity dependent
299       freezing point of sea water at the surface
300     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
301       meridional stresses are now different (and hopefully correct)
302    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
303       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
304       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
305    o pkg/diagnostics: add options and parameters for regional-statistics
306       diagnostics ; define regions by reading a region-mask from a file
307       (might add other options later)
308    o pkg/bulk_force:
309     - add option and parameters to use AIM surface-flux formulae.
310     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
311       others forcing fields (defined in PARM05, parameter file "data") are loaded
312       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
313     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
314     - use the right EXCH call for uwind,vwind (to work on CS-grid).
315     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
316       and parameters (note: calcWindStress replaces .NOT.readwindstress).
317     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
318    
319    checkpoint58
320    o add "--embed-source" option to genmake2 which, when the supporting
321      tools can be compiled (as determined by genmake2) will turn on the
322      embed_files package which then embeds the entire MITgcm source code
323      (*.[fFhc] + Makefile) used for the build within the executable
324      - requested by CNH but off by default
325      - adds a paltry <9MB to the mitgcmuv executable in most cases
326      - only writes the output when useEMBEDSRC in eedata is true
327    o clean up 3-dim. relaxation codes:
328      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
329      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
330      * Thanks to Tom Haine for testing!
331    
332    checkpoint57z_post
333    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
334      affects output (@ truncation level) of exp. plume_on_slope ; updated.
335    o fix the pickup behavior for obcs in combination with ptracers
336    o fix a bug in ptracers_external_fields_load
337    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
338      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
339    o transfered surface NH pressure to eta field (if exactConserv).
340    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
341         and update lab_sea output.txt file.
342    o completing 3-dim. relaxation code: additional term
343         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
344      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
345      * At compile time, in "EXF_OPTIONS.h" set
346          #define  ALLOW_CLIMTEMP_RELAXATION
347          #define  ALLOW_CLIMSALT_RELAXATION
348      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
349          tauThetaClimRelax3Dim = 15552000.0,
350          tauSaltClimRelax3Dim  = 15552000.0,
351      * 3 cases:
352          1) Use a constant-in-time 3-dim. field
353          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
354          3) Real-time relax. to time-evolving prescribed field
355    o Adding Laplacian-type smoothness constraint on
356      initial and boundary (forcing) controls (ic, bc)
357      * enable at compile-time via
358        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
359      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
360      * Absolute scale somewhat unclear so far
361      * no area weighting was included since no other cost term does so far
362    
363    checkpoint57y_post
364    First step for a NLFS adjoint
365    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
366    o new init. routines for calc_r_star, calc_surf_dr
367    o still need to deal with ini_masks_etc
368    o testreport seemed happy
369    checkpoint57y_pre
370    
371    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
372    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
373    o add new offset feature to offline pkg (plus minor cleanup)
374    o cfc fixes for final year of integration
375    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
376      be in GCHEM_OPTIONS).
377    
378    checkpoint57x_post
379    o fix testreport Pb in multiple test experiment.
380    o cleanup our namelist syntax in verification:
381      - make it more F95 standards compliant (some work still needed)
382      - allows the vast majority of our tests to work with gfortran
383    o Non-Hydrostatic:
384     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
385     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
386    o Allow to apply AB on T,S rather than on AB(gT,gS):
387     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
388     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
389       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
390     - need a "clever" read_pickup to restart from the other AB formulation
391    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
392    o remove some unused variables (reduces number of compiler warnings)
393    o adjoint
394      * Disable useVariableViscosity for adjoint for time being
395        (there are a number of extensive recomputations)
396      * Initialize certain variables needed for adjoint
397    
398    checkpoint57w_post
399    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
400                 fix the singleCpuIO RS version of MDSWRITEFIELD
401       and add a WARNING if using globalFiles=T with multi-processors.
402    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
403      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
404    o tracer advection scheme:
405      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
406       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
407       was not very convenient).
408      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
409       (further tests needed for the implicit DST & Flux-Limiter schemes).
410    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
411      and sRef for convenience, handy, when you want to initialize
412      ptracers in a large domain with a constant non-zero value. Also,
413      untangle ptracers_init.F a little.
414    
415    checkpoint57v_post
416    o change dome exp. to use variable viscosity in side-drag terms.
417    o remove all the files from the cfc_offline test since they are now
418      incorporated into tutorial_cfc_offline which has been producing
419      identical results for a few days of testing
420    o add new parameter: sideDragFactor to enable half-slip-side BC
421      and change side-drag S/R to use viscosity from mom_calc_visc
422      (can switch back by setting sideDragFactor=0.); affects results at
423      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
424       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
425    o vorticity & strain are now computed without masking, to account for
426      no-slip-side BC in variable viscosity calculation ; mask is applied
427      anyway later on, before computing advection/coriolis terms.
428    o modify exp4 to test new obcs support for reading from external files
429      and for passive tracers
430    o fix behavior of ptracers_monitor when monitor output is written to a
431      netcdf-file; still not independent of monitor.F (writes in the same
432      file).
433    o change default value of tRef (put a uniform, meaningful value for ocean
434      & atmos) and initialize sRef (was missing, as Martin mentioned).
435    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
436      to be proportional to enstrophy dissipation length.  Thus,
437       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
438      This is now consistent with Smagorinsky and with the manual.
439    
440    checkpoint57u_post
441    o OBCS and PTRACERS: add open boundary support for passive tracers
442      - either use homogenous (pseudo) v.Neumann conditions or prescribe
443        OB-values from file; this is not different from the way theta and salinity
444        are treated
445      - however, Orlanski-radiation conditions are not supported, and the model
446        will stop if you use pTracers and Orlanski at the same time.
447      - beefed up the rountine obcs_external_fields_load: now only those open
448        boundary values are overwritten with values from files for which there
449        are really files, otherwise the OB-fields remain untouched. This makes
450        it possible to use different OBs at different ends of the domain (as
451        with EXF)
452    o reduce number of exch calls in shap_filt (s2).
453    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
454      truncation level) 4/5 MLAdjust test results (11&12 digits match).
455    
456    checkpoint57t_post
457    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
458    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
459      same truncation, independent of the face number: affects affects several
460      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
461    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
462      note that biharmonic viscosity + no-slip was not tested in any experiment.
463    o fix bug in non-linear free-surf side-drag ; generate new output for
464      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
465    o make mnc honor the writeBinaryPrec flag for most kinds of output
466    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
467    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
468      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
469    o add brackets in multi-terms sum to get same truncation, independent of
470      the face number (manage to get exactly same value of gU,gV at the cs-edge)
471      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
472    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
473      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
474      a maximum grid-scale Reynolds number.  Also, changes all length calculations
475      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
476      Suggested values of viscosity parameters found in mom_calc_visc.
477      Many new viscosity diagnostics available.
478    
479    checkpoint57s_post
480    o Add clearing-house for viscosity calculations, mom_calc_visc and
481      correct numerous bugs in LeithD and Smagorinsky discretizations.  
482      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
483      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
484      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
485      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
486      The Strain-Tension form is now called with useStrainTensonVisc=.true.
487      ViscAhStrain and viscAhTension are now retired.
488    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
489    o In response to JMC's bug report, genmake2 now ignores any soft-links
490      that it finds in the *current* directory when searching for files.
491      Soft-links found in any other source directories will still work as
492      they did before.
493    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
494      a C routine to unlimit the stack size
495    o mnc-ify pkg/aim snapshot vars
496    o mnc-ify pkg/land as requested by Daniel
497    o various changes to mnc including:
498      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
499      - output can now be grouped so that all files within a group
500          change the ITER portion of their names in lock-step together
501      - can now read ("global") PER-FACE (in addition to PER-TILE) files
502          and works with both EXCH1 and EXCH2 (but needs more testing)
503      - writing works for all verification test cases w/ g77 on Linux
504    
505    checkpoint57r_post
506    o make MNC variable initialization happen earlier
507    o add diagnostics for (almost) each term of the momentum Eq.
508    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
509    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
510    o remove MINIMAL_TAVE_OUTPUT option ;
511      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
512    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
513      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
514    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
515    o add time-dependent SST, SSS control
516    o cost terms in ecco/ modularized (new cost_generic.F)
517    o cost_averages routines are modularized (new cost_averagesgeneric.F)
518    o new infrastructure for seaice model vs. obs misfits in seaice/
519      * driver from the_main_loop.F is seaice_cost_driver.F
520      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
521      * gradient check in Exp. 6a of natl_box_adjoint/
522    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
523      (see README file)
524    
525    checkpoint57q_post
526    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
527    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
528      - bug was reported by Jean-Michel and Ian Fenty
529    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
530      update exp. cpl_aim+ocn output.
531    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
532      Needed for high-res. runs with large global files
533      to be able to limit tapelev size
534    o Changed some tests for adjoint:
535      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
536      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
537      * global_ocean.90x40x15/ back to default 3-level checkpointing
538    o Modifications to enable scripted COMMON to MODULE conversion
539      * verification/OpenAD/code/ has necessary scripts and description;
540      * converts, compiles and runs successfully;
541    
542    checkpoint57p_post
543    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
544    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
545      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
546    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
547    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
548      (was already the case for dissipation with mom_vecinv,
549       and also the case for grad.PhiHyd when staggered-timeStep)
550      This will allow to put dissipation out-off the AB time-stepping.
551     Unfortunately, affects truncation error. Update output of exp. that "fails"
552      (cg2d matching number) and leave the others for later: front_relax(10),
553      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
554      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
555    
556    checkpoint57o_post
557    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
558      (2) its ready to be documented during the 20050801 DocFest
559    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
560      for ideal_2D_oce and lab_sea on linux_ia32_g77
561    o set to #undef CTRL_SET_OLD_MAXCVARS_30
562      in global1x1_tot/code_seaice_adj to access indices 32, 33
563      (worth another tag)
564    
565    checkpoint57n_post
566    o adding precip control xx_precip 32
567    o adding swflux control xx_swflux 33
568    o Replacing 10 forcing penalty cost routines by 1 generic.
569    o Implementing partitioning in time-mean and variable adjustment
570      for atmos. state.
571    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
572    o in natl_box_adjoint:
573      * updated exp 1 to 10
574        (but does not have time-mean vs. variable split results yet)
575    o updated global1x1/*_seaice_adj/
576      to incorporate latest changes
577    o enable useSingleCpuIO for mdsio vector routines
578      (applies in particular to tapelev I/O)
579    o removed inefficient K-loop in all active_file*control*.F
580    
581    checkpoint57m_post
582    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
583      and advect_cs (use EXCH-2 and standard cs-32 grid files).
584    o pkg/exch2: filling of face-corner halo regions is optional
585      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
586    
587    checkpoint57l_post
588     tag before updating tutorials (pre-release-2)
589    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
590       for output and interpolation of input fields onto model grid)
591    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
592       Affects results of exp. rotating_tank ; update output.txt.
593    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
594          and taking the square quantity and/or using a fraction-weight field.
595    o fix aim_diagnostics_init.F mate numbers.
596    o add mnc output capability to diagnostics/diagstat and update
597      our cvsignore files for the ACSII output generated
598    
599    checkpoint57k_post
600    o lab_sea now uses diagnostics package and provides a suite of
601      new EXF diagnostics output.
602    
603    checkpoint57j_post
604    o exf
605      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
606        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
607        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
608      * extended diagnostics output
609        - now includes all EXF variables
610        - hs, hl moved to common block
611        - separate S/R for diagnostics, called after ctrl vector is added
612        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
613        - EXFqnet contains true Qnet (i.e. includes qsw)
614      * updated verif. lab_sea, global_with_exf
615      * Rearranging hflux (exf_mapfields -> exf_getforcing)
616        to ensure that diagnostics sees a true EXFqnet
617    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
618    o diagnostics pkg: change pointers so that 1 diagnostic can be used
619      several times with different frequencies.
620    o mnc-ify the thsice package as requested by Daniel Enderton
621      - the monitor--MNC output needs work
622      - many attributes need to be added (most are currently blank)
623    o mnc-ify theaim_v23 package as requested by Daniel Enderton
624      - many attributes need to be added (most are currently blank)
625    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
626    o add Sadourny like discretization to the 4th.O vorticity advection scheme
627    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
628      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
629         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
630    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
631     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
632    
633    checkpoint57i_post
634    o Diagnostics package was changed: diagnostic allocation is now deactivated
635      by setting an empty file name in the namelist (used to be by setting 0 frequency)
636    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
637      add 1rst Order upwind vertical Shear.
638    o add a quick fix for A/B checkpointing in OFFLINE mode
639    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
640      end-run around the C/Fortran linking horror in eesup/src/timers.F
641    o added pkg/runclock: allows user to terminate run based on wall clock
642    o added non-hydrostatic scaling parameter: nh_am2
643    o pkg/my82: futile attempt to make results compiler-independent by adding
644      some "_d 0", etc. no effect.
645    o for mnc output, fill the 'T' coordinate var with myTime and create a
646      separate 'iter' variable for iteration count
647    o pkg/diagnostics:
648      add new capability: output of Global/Regional & per-level statistics ;
649      tested against monitor output (including land & thSIce) on various exp.
650    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
651    
652    checkpoint57h_done
653      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
654      data.diagnostics, data.gchem, data.ptracers) is done.
655    
656    o pkg/diagnostics: prepare for Global/Regional statistics.
657      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
658    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
659      and rename it: DIFFERENT_MULTIPLE
660    
661    checkpoint57h_post
662    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
663    o pkg/diagnostics: change output frequency, now in seconds (instead
664      of Nb of iterations). This requires to change data.diagnostics.
665    checkpoint57h_pre
666    
667    o in mnc, let the user create the output dir if both mnc_outdir_date
668      and mnc_outdir_num are false
669    o add fflags() to pkg/diagnostics which allows one to specify, on a
670      per-file basis, the file precision [default behavior is unchanged]
671    o added diagnostics to pkg/kpp, including computation of mixed layer
672      depth based on a temperature/density criterion
673    o updated verification/natl_box to test the new pkg/kpp diagnostics
674    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
675    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
676    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
677      not mnc -- this mistake was found by JMC and is now corrected
678    
679    checkpoint57g_post
680    o add Adams-Bashforth 3rd Order time stepping:
681      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
682      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
683    checkpoint57g_pre
684    
685    o make lambda[Theta,Salt]ClimRelax spatially varying
686      (default remains spatially uniform constant based on tau)
687    o added new control variables
688      * init. uVel, vVel, etanN
689      * lambda[Theta,Salt]ClimRelax
690    o separate masks used for ctrl_pack/unpack 'from write_grid' output
691      (suggested by G. Forget)
692    
693    checkpoint57f_post
694    o add parameter "baseTime" = model base time = time at iteration zero
695      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
696      account for baseTime shift
697    o move Coriolis arrays from PARAMS.h to GRID.h
698    checkpoint57f_pre
699    
700    o mnc-ifying the seaice package
701    o introduced an alternative length scale calculation for use in the limiting
702      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
703    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
704    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
705      as well as grad(vort3).  Made it compatible with both approximate form
706      for the cubed sphere and full form of these gradients.  Added flag
707      useFullLeith to select between approximate and full form.  
708    o add "d0" in getcon.F to reduce differences between compilers/platforms
709      update output.txt of exp. fizhi-gridalt-hs
710    o change port_rand funtion to allow to set the seed.
711    o fix obscure MNC bug involving conversion between reals and integers
712      - it caused no problems with certain (eg. gcc, ifc) compilers but the
713        new version is now more standards-compliant
714    o adjoint-related modifications
715      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
716      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
717      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
718    
719    checkpoint57e_post
720    o Adding eddy stress controls a la Ferreira et al.
721    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
722    
723    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
724      update output.txt of exp. fizhi-gridalt-hs
725    o add more "Z" dimensions and associated coordinate vars to MNC
726    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
727    o parameter calendarDumps: when set, approximate months (30-31 days) and years
728      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
729      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
730      months and years.  Requires pkg/cal.
731    o diagnostics: add pickup functionality
732      - off by default for backwards compatibility
733      - current version only uses MDSIO -- MNC will be added
734    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
735    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
736    
737    checkpoint57d_post
738    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
739    o modify verification/ideal_2D_oce so that it tests the creation of mnc
740      output from the diagnostics package
741    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
742    o make genmake2 more portable by using ".$FS" instead of ".f" for more
743      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
744    o add coordinate variables to the MNC output from the diagnostics package
745    o change MNC-flags default value: true when useMNC=TRUE
746    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
747      the ability (off by default) to read the grid information using MNC
748    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
749    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
750    o do snap-shot diagnostics at the middle of the time-interval (instead of
751      at the end).
752    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
753      new test for AIM with thSIce + slab-ocean
754    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
755    o move state variable diagnostics to the beginning of the time step ;
756      (note: still needs some work specially for snap-shot diagnostics)
757      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
758    
759    checkpoint57c_post
760    o Change testing option (-ieee) to get closer agreement between g77 & ifort
761    o generate new output.txt files on faulks with g77 & the new -ieee option
762    checkpoint57c_pre
763    
764    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
765      update output.txt of exp. global_ocean.90x40x15
766    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
767      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
768    o add saltFlux(+File) forcing capability with periodicExternalForcing
769    o allow to use pkg diagnostics for GM-Redi & ThSIce output
770    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
771    o improvements for the MNC output from DIAGNOSTICS:
772      - correct handling of the unlimitied dimension
773      - all dims now have associated coordinate variables
774      - variables located at U, V, and Corner ("Z") points are now written
775        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
776        *all* data points are output
777    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
778    o added pkg/seaice/seaice_monitor.F
779    o mdsio_readfield.F can now read files visible only to master MPI process.
780    o pkg/seaice: some test code for ice-modified ocean stress
781    o exf_getffields interpolation defaults to bilinear for all scalar forcing
782      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
783      spurious negative numbers for precipitation and humidity.  Will cause
784      some small numerical differences for integrations using pkg/exf/exf_interp.F.
785    o pkg/ctrl/
786      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
787        May be enabled via doPackDiag
788      *  introduce z-scaling of
789         + gradient (doZscalePack) and
790         + control (doZscaleUnpack)
791    o pkg/mdsio/
792      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
793      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
794    
795    checkpoint57b_post
796    o simplify options in diagnostics_fill arguments (remove weird combinations)
797    o fix MNC coordinate variables so that they now contain per-face index
798      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
799      general, EXCH2 grids are only aligned to a "local" coordinate system
800    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
801    o Implement instantaneous output within pkg diagnostics:
802      setting a negative frequency in data.diagnostics produces
803     "snap-shot" output (as opposed to time-average if freq > 0)
804    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
805      NOTE: change ptracer diagnostics name: use 2 characters to work with
806            more than 9 tracers. Add also diagnostics of advect & diffus flux.
807    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
808      becomes the coordinate variable for the 'T' dimension
809    o add CF-style coordinate variables to MNC
810      - just a first cut:  numbers are meaningless on the cubesphere and
811        missing along the T axis but otherwise it works!
812    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
813    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
814    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
815      this is based directly on what the model compute, so that the content of
816      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
817    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
818    o clean up build options files for SunOS, in particular
819      - remove -traditional from xmakedepend
820      - change -xarch=v9 to -xarch=native for f77
821      - restore use of make (not gmake)
822      - add CC=gcc if using g77
823    o changes per discussion of AM, JMC, & EH3 today:
824      - move redundant "grid" variables out of "state" -- in preparation of
825        creating proper CF-style coordinate variables and in recognition
826        that any/all grid variables can be easily copied (eg. w/NCO) from
827        the grid files into any of the other NetCDF files
828      - *always* output grid variables with MDSIO (this will eventually be
829        changed)
830      - output MNC grid file if useMNC is true
831    o every instance of _END_MASTER() has been found and replaced with
832      _END_MASTER( myThid ) in order to satisfy certain picky Sun
833      preprocessors
834    o re-arrange diagnostics pkg initialisation:
835     - allow each package to extend the available diagnostics list
836     - add some checking and fix small problems (multi-threaded, ...)
837     - new S/R diagnostics_fill (replace fill_diagnostics):
838       look through the short list of active diag. (instead of the long list)
839       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
840    
841    checkpoint57a_post
842    o this set of changes restores TAMC compatibility
843      tested for global_ocean.90x40x15 adjoint on trough
844      (what a pain)
845    
846    checkpoint57a_pre
847    o some modifs in tools/build_options for sunos
848    o call ctrl_pack for ctrl at end for optimcycle=0
849    
850    checkpoint57
851    o add horizontal bi-harmonic viscosity for vertical velocity
852      - new parameter viscA4W (defaults to viscA4)
853      - affects only non-hydrostatic code
854      - to be done: no-slip lateral boundary conditions
855    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
856    o implement Implicit Vertical advection for pTracers
857    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
858      (implemented also for implicit vertical diffusion & advection)
859    o OBCS: extend application of tracer open boundary conditions
860      to a strip beyond the boundary of width Olx/Oly
861    o add call monitor to TAF set of required calls (flow directives)
862      and include in natl_box_adjoint
863    o untangle a few ifdefs related to cost, ctrl, autodiff
864      untangel a few ALLOW_ECCO_OPTIMIZATION
865    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
866      (theta2, salt2 in ecco_cost_weights)
867    
868    checkpoint56c_post
869    o OBCS as control variables
870      - update ctrl_ad_diff.list, obcs_ad_diff.list
871      - remove balance of obcs controls from default
872      - fix index bug nobcs in ctrl_init
873      - fix dummy fields filen in ctrl_pack
874      - add dummy weights for obcs
875    o lsopt: comment out fort.94 output
876    o optim:
877      - remove unnecessary header files
878      - adjusted namelists
879      - add xerbla.F to Makefile
880    o exf:
881      - multiple modifications of exf_check_range
882      - unit change in exf_init_runoff from [m/year] to [m/s]
883    o mdsio:
884      - i/o-vector change debugLevel from debLevA to debLevB
885    
886    checkpoint56b_post
887    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
888      is called from DO_THE_MODEL_IO
889      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
890      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
891      - clean up PTRACERS_WRITE_TIMEAVE a little
892    o add another verification experiment that tests both the cfc-pkg and
893      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
894      reactive tendencies treated inline with regular timestepping
895    o testreport previously did a lousy job of comparing small numbers, so
896      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
897      implemented in the little c-progam tmp_cmpnum.c which is embedded in
898      testreport.
899    o ptracers_monitor: bug fix for MPI
900    
901    checkpoint56a_post
902    o GCHEM: finish reorganizating the package
903      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
904        (introduces another 3D-array for each passive tracer, but only if
905        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
906        gchemTendency is not needed because the timestep is done separately)
907      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
908      - GCHEM is now---more or less cleanly---separate from PTRACERS
909      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
910        so clear to me how that should be done in a general way.
911    o CFC: improve formatting of output in CFC_ATMOS
912    o PTRACERS:
913      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
914        that ALL experiments with ptracers enable can be checked. This makes
915        GCHEM_MONITOR obsolete.
916      - include a runtime parameter PTRACERS_monitorFreq that defaults to
917        monitorFreq
918      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
919    o add PTRACERS (PTR0[1-5]) to testreport output
920    o exf_check_range:
921      * default changed to .TRUE.
922      * will check values for niter0 if debLevA, every timestep if debLevB
923      * STOP in exf_check_range if 'out of range'
924      * range chosen generous to allow for potential extema
925      TBD: a version with stricter range
926           permitted range would be runtime parameters
927    o GMredi:
928      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
929      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
930      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
931    o GCHEM:
932      - move call to GCHEM_FORCING_SEP, so that it is now called before
933        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
934      - introduced a useGCHEM runtime flag and applied it everywhere.
935      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
936        this flag is now only visible within GCHEM-pkg routines.
937      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
938        be replaced by a 3D array that is computed before thermodynamics; for
939        this, the tracer ID iTracer had to be included into the parameter list
940        of ptracers_forcing
941      - set up forward_step to call gchem_forcing, that will replace
942        gchem_forcing_int in ptracers_forcing
943      - cleaning up
944    o small cleaning of exch2: remove files that are also in eesupp/src
945    
946    checkpoint56
947    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
948    o mnc: cleanup "full" files--fixes out-of-memory problem
949    o ECCO-GODAE
950      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
951      * fully merged and updated from SIO code
952        windstress sign change affects
953        - exf_inscal_[u/v]stress
954        - sign of xx_tau[u/v] adjustments
955        - signs in cost_scat
956      * ctrl_get_gen: avoid update of tau[u/v] for first few days
957      * natl_box_adjoint updated and compressed
958      * 2-level checkpoint switch added
959        (tested in EXP. 1 of natl_box_adjoint)
960      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
961    o SVD
962      * first complete, non-hacked version for SVD calculations
963      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
964        performed via direct access files admtlm_vector.it????
965        (via ctrl_[un]pack)
966      * optimcycle is used for ARPACK iteration counter
967        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
968      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
969        and add linear transforms where necessary
970      * controls are initial/final SST, SSS (can be extended; need to check
971        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
972    o mdsio: filename info to both stderr, stdout
973    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
974      from sign change
975    
976    checkpoint55j_post
977    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
978      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
979    o add consistent build directories and .cvsignore files to verification
980    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
981    o make all subroutines 30 or less characters in length for certain older
982      compilers to work (a thorough search only turns up two routines in
983      pkg/ptracers)
984    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
985      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
986    
987    checkpoint55i_post
988    o change arrays for total vertical diffusivity (2.D if explicit,
989      3.D if implicit) ; each ptracer uses its own background value.
990    o added mnc/NetCDF output capability to ocn_compon_interf
991      - added bits to verification/cpl_aim+ocn so that it can run on
992        ITRDA and other clusters without the mpirun "-wd" option
993    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
994      configuration
995    o give MNC the ability to create additional files rather than
996      exceeding a specified file size limit "MNC_MAX_FILESIZE"
997      - the default is just less than 2GB which is a practical limit
998        on many systems
999    o Compute the non-local term using either KPP vertical diffusivity (=default)
1000       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1001    
1002    checkpoint55h_post
1003    o add verification test "vermix"
1004    o remove all the *_ioinc flags and replace with the single global
1005      outputTypesInclusive flag
1006    o allow to set a vertical profile of vertical diffusivity for T & S
1007    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1008    o useMNC moved from data.mnc to data.pkg
1009    
1010    checkpoint55g_post
1011    o Renaming carbon AD experiments to comply with testreport conventions
1012    o Updating adjoint of Held-Suarez hs94.1x64x5
1013    o Fixing directives for non-ECCO forward_step, after ECCO directives
1014      have been fixed to avoid recomp. of do_oceanic_phys
1015      Works well for global_ocean.90x40x15,
1016      but recomp. issue remains for carbon
1017    o Updating adjoint output for natl_box_adjoint after
1018      pkg/ecco has been modified (see taga c55d_post)
1019    
1020    checkpoint55f_post
1021    o rename to timeave_init_fixed
1022    
1023    checkpoint55e_post
1024    o some delicate re-shuffle of store directives to avoid one
1025      extra call of do_oceanic_physics
1026      affects ecco_the_main_loop.F, do_oceanic_physics.F
1027      checkpoint_lev1_directives.h
1028    o NB: this may break global_ocean adjoint temporarily,
1029      but it is clear how to fix it. Will do later, need this now.
1030    
1031    checkpoint55d_post
1032    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1033    o ecco_cost_weights is modified to 1x1 runs
1034    o modifs to allow observations to be read in as
1035      single file or yearly files
1036    o enable to read exf forcing fields as either
1037      single file or yearly files (flag useExfYearlyFields)
1038    checkpoint55d_pre
1039    
1040    o switch between 2-level and 3-level checkpointing
1041    o add ability of MNC to write local and "partial" (eg. 2D slices where
1042      the full 3D field is never actually stored) arrays to NetCDF files
1043      with the correct (that is, the complete multi-dimensional) set of
1044      array indicies
1045      - used in mom_vecinv() to write the diagFreq output
1046      - tested (demonstrated) in verification/aim.5l_cs
1047    o further mnc-ification
1048      - add verification/lab_sea to the list with mnc setups
1049      - fix undefined mnc v-names in cd_code
1050      - add kpp to mnc output (both snapshot and timeave)
1051    o non-hydrostatic code
1052      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1053        in calc_gw.F
1054      - defaults to viscAh
1055      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1056        friction or Leith) in non-hydrostatic mode, as long as there is
1057        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1058    o pkg/cost
1059      extend simple cost functions to treat time mean quantities
1060      (T,U,V) via cost_accumulate_state from cost_tile
1061    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1062        be 2 times larger than the minimum size the advection scheme requires.
1063        now get a perfect conservation of salt in advect_cs test-exp (updated)
1064    o GGL90 (Gaspar's TKE mixed layer)
1065      - add horizontal diffusion of TKE, requires exchanges in
1066        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1067        default. In OPA there is no horizontal diffusion of TKE but the
1068        mixing coefficients are computed from a horizontal average of TKE of
1069        6 points or so. I think that diffusion has a little more physical
1070        justification.
1071      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1072        was in vain)
1073      - mask tke-variable in ggl90_init
1074    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1075    o fix biharmonic diffusion on CS-grid.
1076    o more obcs stuff
1077      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1078        for reading boundary values. This routine is called from
1079        obcs_prescribe_read
1080      - updated obcs_check
1081      - changed sponge layer relaxation parameter units for days to seconds
1082      - turned off sponge layer by default
1083      - changed argument list of OBCS_CALC to myTime+deltaTclock
1084      - fixed about 35 bugs in obcs_external_fields_load
1085    
1086    checkpoint55c_post
1087    o obcs stuff
1088      - new runtime flags useOBCSprescribe, useOBCSbalance
1089      - re-arranged obcs_calc
1090      - moved exf_getobcs to obcs_prescibe_read
1091        obcs_prescibe_read is called after ORLANSKI stuff
1092        and independent of it (executable can contain all).
1093      - updated obcs_check
1094      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1095        These may be necessary only if tangential velocities are
1096        prescribed at OB, not sure, needs testing.
1097    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1098      which simplifies the calls and passes the ifc check-bounds test
1099    
1100    checkpoint55b_post
1101    o add a 2D scalar, Z location, exchange_2 routine.
1102    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1103      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1104      affects advect_cs results (for the wrong reason): update output.txt
1105    o use a more standard discretization for biharmonic viscosity ;
1106     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1107      affects results of dome set-up: update output.txt
1108    o fix gad_advection.F (CubedSphere part), back to version 1.23
1109    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1110    
1111    checkpoint55a_post
1112    o merged code to
1113      * prescribe/read time-dependent open boundaries
1114        (works in conjunction with exf, cal)
1115      * sponge layer code for open boundaries
1116      * each boundary N/S/E/W now has its own CPP option
1117        (healthy for the adjoint)
1118    
1119    checkpoint55
1120    o up-to-date adjoint of previous breaks
1121      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1122      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1123      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1124      - carbon: * remove tr1-related adjoint verification
1125                * add ptracer as control variable
1126    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1127      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1128    
1129    checkpoint54f_post
1130    o in verification/carbin/ remove experiment related to
1131      ALLOW_PASSIVE_TRACER (array tr1 etc)
1132      code_ad/ input_ad/ results_ad
1133    
1134    o add two new packages
1135      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1136        + subject to optimization (memory)
1137      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1138        + subject to reordering (many GOTOs in the original code)
1139        + so far opps is called for every (i,j) point, and then operates in
1140          the vertical; one may want to reorder the scheme in order operate in
1141          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1142          fields)
1143    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1144      - all verification tests compile and run with linux_ia32_g77
1145      - defaults are compatible with current input files--nothing
1146        should change if you were not previously using MNC
1147      - MNC output has been added in numerous places (eg. timeave)
1148        but there are still a few writes not yet do-able with MNC
1149        (this is in progress)
1150      - flags now allow for either/or/both use of MDSIO and MNC and
1151        documentation will soon follow
1152      - numerous small formatting cleanups for ProTeX
1153    o add version info (via BUILD_INFO.h) to MNC and stdout
1154    
1155    checkpoint54e_post
1156    o add two new packages
1157      - pp81 (Packanowski and Philander, 1981), Richardson number and
1158        stratification dependent mixing
1159      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1160      - these scheme operate in a similar manner as KPP (without ghat, of
1161        course), however there is only one diffusivity that is used for both
1162        temperature and salinity (and passive tracers)ç
1163    o add offline package
1164    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1165      provided by Stephanie Dutkiewicz
1166    o genmake2: add ability to search for C compilers and cleanup test output
1167      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1168    
1169    checkpoint54d_post
1170    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1171    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1172      leading to additional shift by 5 days each year of integration
1173       (i.e. leading to considerable offset over the years)
1174    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1175    o start with no AB and no initial filtering (staggerTimeStep):
1176      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1177    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1178      (external loading & cpl import/export stay in forward_step.F)
1179    o update coupling interface to work with new staggerTimeStep
1180    o change MDSIO ptracers_pickup.
1181    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1182    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1183    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1184    
1185    checkpoint54c_post
1186    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1187      this affects (truncation error) output.txt of test-exp:
1188       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1189    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1190    o change Qnet to always be the net heat flux, (+upward).
1191      affects (truncation error) output of natl_box exp.: updated
1192    o define the max number of passive tracers in PTRACERS_SIZE.h
1193    o start to test mnc routinely in exp0
1194    o add sea-ice loading (sIceLoad) as a new forcing field.
1195    
1196    checkpoint54b_post
1197    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1198       impressive on Altix and Opteron systems)
1199    o diagnostics can now write NetCDF files through the mnc package
1200    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1201    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1202    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1203      affects (truncation error) output of lab_sea & natl_box exp.: updated
1204    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1205    
1206    checkpoint54a_post
1207    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1208    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1209    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1210    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1211      + internal_wave (shift in writing cg2d_ini_res)
1212    checkpoint54a_pre
1213    
1214    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1215      - modified verification/lab_sea and natl_box_adjoint accordingly
1216    
1217    checkpoint54
1218    checkpoint53g_post
1219    o prepare splitting of thermodynamics: store convect.counter in common block
1220    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1221      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1222    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1223    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1224    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1225    o restore adjointability
1226    
1227    checkpoint53f_post
1228    o modifications that affect AIM experiment results (update output.txt):
1229      - no advection of S at top interface Nr (pkg/generic_advdiff)
1230      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1231    o AIM pkg:
1232      - include stability function into surf.Flux derivative relative to Tsurf
1233      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1234    
1235    checkpoint53e_post
1236    o merged cylindrical coord configuration
1237    o added rotating_tank experiment
1238    checkpoint53e_pre
1239    
1240    checkpoint53d_post
1241    o faulks upgraded: re-generate output.txt that have changed:
1242       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1243    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1244    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1245    o added Sadourny discretization of Coriolis
1246      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1247      - re-enabled use of omega3 (useAbsVorticity)
1248    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1249      vector-invariant equations
1250      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1251    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1252      hopefully without new bugs
1253      - still to do: biharmonic friction for non-hydrostatic w
1254    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1255    o regenerated output for global_ocean_ebm (using -ieee)
1256    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1257      of mom_common/
1258      - simple re-arrangement of instructions within computing loop
1259    checkpoint53d_pre
1260    
1261    checkpoint53c_post
1262    o new version of coupler for AIM+thSIce and Ocean models
1263     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1264     - land: change Evaporation of snow
1265     - aim with thSIce: fix bug in snow-precip.
1266    o changes to calc_gw.F
1267     - bug fix for w^2 term near the bottom boundary
1268     - (hopefully) improve the lateral slip boundary condtions for use with
1269        partial/looped cells
1270      - because the bug fix changes two verification experiments anyway (exp5
1271        and plume on slope), change the lateral boundary condition from half slip
1272        to the value of no_slip_sides
1273    o ebm package wasnt quite up to the parallel task. Fixed that.
1274    o Adjoint of EBM package + verification
1275      * TLM OK
1276      * ADM not sufficient accuracy yet (needs further testing)
1277    
1278    checkpoint53b_post
1279    o Commiting new energy balance model to repository
1280      * package is pkg/ebm
1281      * verif. is verification/global_ocean_ebm
1282      * references are in ebm_driver.F
1283    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1284    C        Global thermohaline circulation. Part I:
1285    C        Sensitivity to atmospheric moisture transport.
1286    C        J. Climate 12(1), 71-82
1287    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1288    C        Global thermohaline circulation. Part II:
1289    C        Sensitivity with interactive transport.
1290    C        J. Climate 12(1), 83-91
1291    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1292    C        Destabilization of the thermohaline circulation
1293    C        by atmospheric eddy transports.
1294    C        J. Climate 7(12), 1870-1882
1295    o Will need long integration testing.
1296    checkpoint53b_pre
1297    
1298    o created pkg/mom_common in preparation for variable viscosity code
1299    o renamed and split ini_mnc_io
1300    o pkg/land: only liquid water can diffuse or run-off
1301    o AIM using land: soil wetness availability account for snow
1302    o added printMapIncludesZeros to EEPARMS namelist
1303    
1304    checkpoint53a_post
1305    o restore TAMC compatiility for exf_constants.h
1306      (no usage of _d in .h)
1307    o Additional storing in KPP in an attempt to fix
1308      TAMC problem with adjoint of KPP code.
1309      (no success...)
1310      Identical code works fine with TAF.
1311    o Fixed verification/natl_box_adjoint experiments.
1312      Initial conditions for Experiments 4 and 5 are now
1313      set to "SEAICE_initialHEFF=0", which is more reasonable,
1314      and hence gives results closer to that of Experiment 2.
1315      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1316    
1317    checkpoint53
1318    o stable checkpoint with up to date adjoint
1319      TLM tests only run for 1st grdchk at the moment. Its unclear if
1320      this is a code problem or a problem with resetting code for g_
1321      variables that is being autogenerated wrong.
1322      Otherwise:
1323       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1324       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1325         are both still in chaos following their security messes.
1326    
1327    checkpoint52n_post
1328    o various build (mostly genmake2) changes including:
1329      - ability to build/run more easily within Cygwin and MacOS X
1330      - more complicated Makefiles with a stronger dependence on Gnu Make
1331    o pkg/seaice modifications
1332      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1333        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1334        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1335      - changed proxy for geostrophic velocity and updated
1336        verification/lab_sea/results/* accordingly
1337      - removed ADI dynamic solver from pkg/seaice
1338      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1339        they caused a segmentation fault under certain circumstances
1340      - removed unused field WATR
1341    o bug fix in exf-package:
1342      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1343         now reflect that.
1344    o small fixes in the cal-package:
1345      - set reference date to first of January for the 'model'-calendar
1346      - failing of cal_CheckDate in cal_FullDate now actually results in a
1347        warning
1348    o small modifications in exf-package to increase flexibility:
1349      - change climtempfreeze from a constant to a runtime parameter that
1350        is specified in data.exf_clim (default = -1.9)
1351      - introduce runtime parameter windstressmax (default = 2.0) that is
1352        specified in data.exf
1353    o fix in pkg/thsice:
1354      - update Evap (Tsf changes) to be consistent with Latent heat flux
1355      - maintain snow precipitation unchanged (even if Tsf >=0).
1356     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1357    
1358    checkpoint52m_post
1359    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1360      this does not change any of the results, because myIter=0 in swfrac always
1361      lead to jwtype=2 (the default anyway), but the call makes little sense
1362      as a default
1363    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1364    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1365      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1366    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1367    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1368    o extending useSingleCpuIO option to work with new exch2 I/O format
1369      - old-style, missing-tile I/O is still accessible by defining CPP
1370        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1371    o monitor package can write to NetCDF files and/or STDOUT
1372    o fix re-definition bug in MNC_GRID_INIT_ALL()
1373    o doc/api_reference added
1374      - a framework for building an API Reference Manual using all
1375        the "protex" comments embedded in the code
1376      - see pkg/generic_advdiff, pkg/mnc for examples
1377    o MNC:
1378      - make myThid the last argument for all subroutines
1379      - new default for the grid files: NO halos
1380      - add useMNC and other run-time flags
1381      - separate per-file-group handling of the unlimited dimension
1382      - early initialization of MNC w/ flags read at the eeboot stage
1383        and lookup tables set in initialize_fixed
1384      - write all MNC output to a freshly-created directory
1385    o thermodynamics sea-ice (thsice) is now tested with testreport.
1386    o test exp. advect_cs: use the standard cs32 grid ; update output.
1387    o Added functionality to grdchk:
1388      pick global i,j,k position (or nearest wet) where to perform check.
1389    
1390    checkpoint52l_post
1391    o new land formulation:
1392      a) use ground enthalpy as prognostic variable to ensure exact
1393         energy conservation.
1394      b) account for water temperature and for latent heat of freezing
1395         in all processes (rain, run-off, ground storage)
1396      c) compute surface and ground temperature implicitly.
1397    o aim_v23 modification for new land model:
1398      a) Treat separately land / ocean / sea-ice surface fluxes
1399         to allow implicit computation of land & sea-ice surface temp.
1400      b) add snow precipitation.
1401    checkpoint52l_pre
1402    
1403    o fix problem (when 1 tile is empty) in min/max monitor.
1404    o fix bug in timeAve (u,vZetatave in common block)
1405    o no restoring terms under ice for pkg/seaice
1406    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1407    o bug fix for pkg/seaice pickups
1408    o change MNC call locations and add coordinate attributes
1409    o mask vorticity at the corner ; affects global_ocean.cs output
1410    o fix ini_curvilinear_grid ; test CS experiments with mpi
1411    o aim.5l_cs: modify sea-ice fraction input file ; update output
1412    o exf: Adding simple range check routine for exf fields after read
1413    
1414    checkpoint52k_post
1415    o removed top-level directory "diags"
1416      - we migrated these functions to pkg/timeave a long time ago
1417    o fixed bug introduced in pkg/monitor
1418    o accuracy ctrlprec = 32 insuffient for gradient checks using
1419      averaged fields (I/O via cost_averages)
1420      -> use ctrl.h in active_file*.F to control I/O precision.
1421    o paramter list of CALL ADTHE_MAIN_LOOP
1422    o added initial do_the_model_io to ecco
1423    o set all ...Freq to zero after cost_final
1424      taveFreq, dumpFreq, pChkptFreq
1425    o MAIN and ECCO differentiability restored
1426    
1427    checkpoint52j_post
1428    o fix nchklev in tamc.h for global_ocean...
1429    o Bringing flow and store directives up-to-date
1430    o Really weird thing!
1431      call do_the_model_io from the_main_loop with parameters
1432      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1433      TAF places a faulty re-call of initialise_varia
1434      after cost_final call which should not be there!
1435    checkpoint52j_pre
1436    
1437    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1438      error messages
1439    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1440    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1441      debug output
1442    o modfied mdsio_writefield.F to handle non-global files under exch2
1443    o update AIM Cubed-Sphere exp (aim.5l_cs):
1444      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1445    o update AIM Equatorial Channel exp:
1446      use standard aim_v23 pkg and change the SST fields to be more realistic.
1447    o globalFile now works with exch2
1448    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1449      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1450    o limit timeave output for hi-res integrations
1451    
1452    checkpoint52i_post
1453    o removed CPP_EEOPTIONS.h from verification/*/code
1454    o updated the tiling for global_ocean_pressure
1455    checkpoint52i_pre
1456    
1457    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1458      the old pkg/aim).
1459    
1460    checkpoint52h_pre
1461    o shortened offending lines in exch2_send_rx?.template
1462    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1463    o genmake2: add build & execute test for NetCDF code
1464    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1465      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1466    o added useSingleCPUIO flag to monitor.F and mon_out.F
1467    o added temporary hack for sea-ice dynamics on the cube:
1468      metric terms are ignored and it is assumed that
1469      there is no sea-ice on cube faces 1, 2, 4, and 5.
1470    
1471    checkpoint52f_post
1472    o added exch2 cube routines to pkg/exch2
1473    o modified hs94.cs-32x32x5 to use it
1474    o added new grid files to hs94.cs-32x32x5
1475    checkpoint52f_pre
1476    
1477    checkpoint52e_post
1478    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1479      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1480    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1481      to work with implicit vertical advection and AB ;
1482    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1483    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1484     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1485    checkpoint52e_pre
1486    
1487    o fix bug in impldiff when Nr=1 or Nr=2.
1488    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1489    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1490    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1491      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1492    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1493    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1494    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1495    
1496    checkpoint52d_post
1497    o re-tiled many expts to allow comparison in multi-processor mode
1498      - updated output accordingly
1499      - changed hs94.128x64x5 to use intial T from file rather than use the
1500        random number generator
1501    o add infrastructure in model routines for fizhi and gridalt packages
1502    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1503    o changes to permit hi-res, cubed-sphere, configuration
1504      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1505      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1506      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1507        of surface winds for the cube
1508      (A verification experiment, based on global_ocean.cs32x15, but with
1509       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1510       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1511       complete with example surface forcing files and matlab scripts to look
1512       at the output and compare it with that of global_ocean.cs32x15.)
1513    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1514       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1515       to conform to the common rule.
1516    o check-in the first version of the coupler + interfaces for multi-components
1517       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1518       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1519       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1520       - ocean and atmos. share the same horizontal grid (no interpolation).
1521       - exchanges between component and coupler is done in forward_step
1522    o new verification experiment, cpl_aim+ocn:
1523       coupled ocean - AIM atmosphere on cs32 grid.
1524    
1525    checkpoint52d_pre
1526    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1527    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1528    
1529    checkpoint52c_post
1530    o Fixing OPTIONS files for use of exf:
1531      - ALLOW_ECCO not needed
1532      - ECCO_CPPOPTIONS.h should not be included from
1533        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1534        as has been the case in the past
1535      - All cal/exf related options are currently set in
1536        single header file. Should remain so until we
1537        agree on a consistent new policy.
1538    o Removed all CPP options for cal package.
1539      cal has no more CPP options.
1540    o modified STOREs in GAD_ADVECTION
1541    o corrected key comp. for passkey
1542    
1543    checkpoint52b_post
1544    o new version: "thsice" of thermodynamic sea-ice pkg:
1545     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1546     - modify fluxes but do not change theta directly;
1547     - light cleaning of bulk_force pkg (still needed with thsice).
1548     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1549       + output_thsice.txt to test thsice & bulk_force pkgs.
1550    o put back grid & coriolis monitor output.
1551    checkpoint52b_pre
1552    
1553    o call "do_the_model_io" at the beginning (=> dump initial state)
1554    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1555    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1556      (need info on NUMBER_OF_PTRACERS)
1557    o missing PTRACERS headers in some routines
1558    o default tamc.h in pkg/autodiff supposed to crash
1559      to ensure proper customization
1560    
1561    checkpoint52a_post
1562    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1563      - moved surfaceTendencyTice from pkg/seaice to main code
1564      - subroutine FREEZE_SURFACE now limits only surface temperature
1565        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1566        => new output.txt for global_ocean.cs32x15 & global_with_exf
1567      - keep the old version of FREEZE for backward compatibility;
1568        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1569      - corresponding modifs for TAF directives
1570    o added surface flux output variables to TIMEAVE_STATVARS
1571    o time-averaged output for pkg/ptracers
1572    o fix problem with ECCO-related divided adjoint
1573      snapshot file was missing some ad-variables,
1574      but no warning issued by TAF
1575    
1576    checkpoint52a_pre
1577    o some bug fixes for #undef REAL4_IS_SLOW
1578    
1579    checkpoint52 = ecco_c52_e35
1580    o after testing adjoints of checkpoint51u_post
1581    
1582    checkpoint51u_post
1583    o this is the post-merge tag of the ecco-branch
1584      (needs another clean checkout and re-testing)
1585    o various natl_box_adjoint configs and results
1586      but no input fields
1587    o obcs adjoint not yet merged!
1588    o adding ECCO global 1x1 and 2x2 degree configs
1589    o updated/extended some store directives for seaice
1590    o pkg/ecco now containes ecco-specific part of cost function
1591    o top level routines the_main_loop, forward_step
1592      supersede those in model/src/
1593      previous input data.cost now in data.ecco
1594      (new namelist ecco_cost_nml)
1595    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1596    
1597    checkpoint51t_post
1598    o this is the pre-merge tag of the ecco-branch
1599    
1600    checkpoint51s_post
1601    o cleanup: removed various obsolete #define-s
1602    o pkg/grdchk
1603      - renamed 'ph-grd 3' to 'grad-res'
1604      - merged from ecco-branch
1605        (remaining bug fixes for obcs gradient checks)
1606      - additional high-precision output for testreport
1607        (grep for 'precision_grdchk_result')
1608    
1609    checkpoint51r_post
1610    o cleaned up or removed CPP_OPTIONS.h files
1611    o updated results for some of the tests to reflect the new
1612      optfiles (-ieee: -O0 instead of -O3)
1613    
1614    checkpoint51q_post
1615    o cd_code:
1616      - moved cd_scheme.F -> cd_code_scheme.F
1617      - separate read_checkpoint from cd_code_ini_vars.F
1618      - separated cd_code part from write_checkpoint
1619      - updated AD_SOURCE, generated .flow
1620      - added CD_CODE_VARS.h to the_main_loop
1621      - Moving cd_code specific store dir.s to pkg/cd_code
1622    o ctrl package totally restructured
1623      - pack/unpack now optional and decoupled from
1624        xx_/adxx_ I/O
1625      - ctrl_pack/unpack cleaned
1626        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1627      - confined inclusion of AD_CONFIG.h to where necessary.
1628    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1629    
1630    checkpoint51p_post
1631    o create initial cd_code package
1632      - WARNING: the initialization of fields within packages
1633        is broken because INI_FIELDS (where READ_CHECKPOINT is
1634        called) is called *before* PACKAGES_INIT_VARIABLES.
1635        This seems to be backwards since
1636        1) its important to initially zero the entire field including
1637           the "halo" region
1638        2) zeroing needs to be done *before* reading pickup info
1639           and the pickup call might or might not happen in any
1640           particular run
1641      - this needs an overhaul for R2
1642    o cleanup verification/*/code/GMREDI_OPTIONS.h
1643    o cleanup testreport
1644    
1645    checkpoint51o_post
1646    o bringing AD-related verif's up to date with genmake2
1647      - carbon/
1648      - global_ocean.90x40x15/
1649      - hs.94.1x64x5/
1650      - (front_relax/ )
1651    o (more) consistent directory structure for AD-related verif.'s
1652    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1653    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1654    o bug fix in find_alpha.F for MDJWF:
1655      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1656        change rho -> rho-rhoConst
1657      - replace call find_rho to find_rhonum
1658    o initialisation of rFlx extended to full array (required by TAF)
1659      and shifted to thermodynamics
1660    o removed PTRACERS.h in ptracers routine
1661    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1662    o Correcting initialisations for fVerU, fVerV.
1663    o helping TAF to recognize dependency on kUp for
1664      fVerU, fVerV
1665    o Replacing delZ by delR in pkg/ctrl/
1666    checkpoint51o_pre
1667    
1668    o undid all of cp51 pending some cleanups and discussion
1669    o added the [#include "AD_CONFIG.h"] statement to all files that need
1670       it for adjoint/tl #defines
1671     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1672     o removed tools/genmake since it no longer works
1673    
1674    checkpoint51n_post
1675    o modifications to make FREEZE flux visible to pkg/kpp
1676      - moved surfaceTendencyTice from pkg/seaice to main code
1677      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1678      - subroutine FREEZE now limits only surface temperature
1679        (this means new output.txt for global_ocean.90x40x15,
1680         global_ocean.cs32x15, and global_with_exf)
1681    o added surface flux output variables to TIMEAVE_STATVARS
1682    
1683    checkpoint51n_pre
1684    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1685    o added [#include "AD_CONFIG.h"] to all files that use the following
1686      defines:
1687      - ALLOW_ADJOINT_RUN
1688      - ALLOW_TANGENTLINEAR_RUN
1689      - ALLOW_ECCO_OPTIMIZATION
1690    
1691    checkpoint51m_post
1692    o incorporating changes to get TAMC/TAF working in genmake2
1693      - added new TAMC/TAF targets to the Makefile
1694      - various cleanups related to package handling
1695      - these changes should have no impact on the forward model
1696    
1697    checkpoint51l_post
1698    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1699     - faster algorithm for cal_addtime.F
1700     - higher precision arithmetic, where needed
1701     - pkg/exf *startdate variables changed from calendar date to
1702       model integration time
1703    
1704    checkpoint51l_pre
1705    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1706    o enable to apply restoring on S & T only in a latitude band.
1707    o update output (external_forcing_surf modif. change truncation errors)
1708       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1709    
1710    checkpoint51k_post
1711    o change default to: useNHMTerms=.FALSE.
1712     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1713       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1714     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1715        exp1, ideal_2D_oce
1716     - change data file of oceanic exp (leave the results unchanged for now)
1717       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1718    o set gravitySign automatically according to the vertical coordinate used
1719      (and change sign: back to "logical" value: +1 when R increases downward)
1720    o added an include barrier to the default CPP_OPTIONS.h and
1721      removed the #include "PACKAGES_CONFIG.h" from it
1722    o fix a bug in mom_fluxform (from chk51j_post)
1723    
1724    checkpoint51j_post
1725    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1726    o adjusted some flow directives (dynamics, thermodynamics)
1727    o added cubed-sphere case to test cost function
1728    o heckpoint_lev?_directives.h now include
1729      pkg-specific directives, whenever those are enabled.
1730    o Moving pkg-specific flow directives to corresponding pkg
1731      Moving pkg-specific differentiation list to corresponding pkg
1732      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1733      ---> conventions are
1734           - pkg_ad.flow
1735           - pkg_ad_diff.list
1736           - pkg_ad_check_lev?_dir.h
1737    
1738    checkpoint51i_post
1739    o merge of the branch-genmake2
1740      - knowingly breaks the older genmake
1741      - automatic generation of all ALLOW_${PKG_NAME} defines
1742      - new testreport supersedes older testscript
1743    o large number of package inclusion and header cleanups
1744    checkpoint51i_pre
1745    
1746    o new output for adjoin of global ocean vector invariant
1747    o fix for checkpoint of thermodynamic seaice and bulk_force
1748    o Steph gchem various cleanups
1749    
1750    checkpoint 51h_pre
1751    o fixed some single quotes
1752    o modify gchem pkg to be more versatile
1753    o modifications to clean up dic pkg
1754    o add pkg/cfc
1755    
1756    checkpoint51g_post
1757    o provide links for ARPACK and ADM*TLM
1758    o start removing verification/vero/
1759    o update AD-related stuff
1760      (in particular some IF-statements in model/src/ routines)
1761    o adding to verification/global_ocean.90x40x15/ adjoint of
1762      vector invariant setup
1763    
1764    checkpoint51f_post
1765    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1766    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1767      of tracer Green's fucntions for ocean inversion project.
1768    
1769    checkpoint51f_pre
1770    o Added on-the-fly spatial interpolation capability
1771        "USE_EXF_INTERPOLATION" to pkg/exf.
1772      - This is a temporary Cartesian-grid hack until
1773        the super-duper ESMF coupler becomes available.
1774      - See verification/global_with_exf/README for usage example.
1775      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1776        flags and modified pkg/seaice accordingly.
1777    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1778        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1779        non-local transport term.
1780    
1781    checkpoint51e_post
1782    o pkg/mom_vecinv:
1783      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1784      - add time-ave diagnostic of vorticity advection.
1785    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1786    o atmospheric geopotential: - include water vapor effect;
1787                                - use p^kappa in p* scaling.
1788    o land pkg: read initial state from files.
1789    o AIM : add stratospheric drag in the upper level
1790    
1791    checkpoint51d_post
1792    o change function ILNBLNK (=> last non-blank char.) to return zero
1793      (instead of the string length) when the string. char is empty
1794  o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)  o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1795    o modif's to restore TAMC compatibility
1796      - avoid "_d" constructs in PARAMETER declarations
1797      - avoid interrupting lines by comment lines
1798    o Use cluster local disks for purely local I/O
1799      vs. globally visible disks needed for ctrl stuff
1800      (merged from ecco-branch)
1801      - new active_file_loc... and mdsio_..._loc routines
1802      - affected packages: autodiff, ctrl, grdchk, mdsio
1803    
1804  checkpoint51c_post  checkpoint51c_post
1805  o introducing integer flag debugLevel  o introducing integer flag debugLevel

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