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revision 1.127 by adcroft, Thu Jan 30 18:35:42 2003 UTC revision 1.670 by mlosch, Thu Jun 8 00:13:15 2006 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/ggl90: fix sloppy output and fix a bug
8    
9    checkpoint58h_post
10    * Modifications for bottom topography control
11      o replace hFacC by _hFacC at various places
12      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
13      o add non-self-adjoint cg2d_nsa
14      o update autodiff support routines
15      o re-initialise hfac after ctrl_depth_ini
16      o works for 5x5 box, doesnt work for global_ocean.90x40x15
17    * Adding verification for 5x5 box (4-layer) bottom topography control
18    
19    checkpoint58g_post
20    o pkg/ggl90:
21      - add parameter (minimum surface kinetic energy)
22      - fix bug (avoiding division by zero)
23    o couple pkg/thsice to pkg/seaice:
24      - modify advection in seaice to accomodate new scalar fields to be advected
25      - only muliDimAdection scheme work with seaice/thsice
26      - mapping of thsice-variables to seaice-variables, back and forth
27      - does not break the verification experiments, but does not give the
28        desired results either
29    o pkg/seaice
30      - make (default) second order advection a bit less confusing?
31    
32    checkpoint58f_post
33    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
34      to pkg/seaice):
35      - new routines thsice_map_exf and thsice_get_exf provide the interface
36      - add an additional formal parameter to thsice_solve4temp
37    o pkg/exf:
38      - add new fields wspeed, snowprecip (to be able to couple to thsice)
39      - correct Stefan-Boltzmann constant
40      - new parameter for longwave surface emittance
41      - separate some stuff from exf_bulkformulae into new routines  
42        exf_radiation, exf_wind
43      - add new parameters and constants: longwave emissivity for ocean, ice
44        and snow, evaporation parameters over ice
45      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
46        either wind from stress or stress from wind
47    o pkg/thSIce:
48    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
49    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
50       and THSICE_CALC_THICKN
51    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
52    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
53      to make debugging easier.
54    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
55    o pkg/bulk_force:
56      - clean-up comments and parameters ;
57      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
58    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
59      generate new output for test-experiment: aim.5l_cs.thSI
60    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
61      testreport accordingly
62    
63    checkpoint58e_post
64    o SEAICE_CGRID adjoint done
65    o R_STAR adjoint implemented.
66      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
67      * need to sort out init. of h0facc, etc.
68    o Make pkg/profile fully independent of ecco,cost, etc. stuff
69      to be able to use it in pure forward.
70    
71    checkpoint58d_post
72    o upgrade simple test-experiment to tutorial example:
73     step.1: duplicate the experiment and (step.2) will remove the old copy.
74      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
75      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
76      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
77      tutorial_global_oce_biogeo    <- copy of dic_example
78      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
79      tutorial_plume_on_slope       <- copy of plume_on_slope
80      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
81      tutorial_global_oce_optim     <- empty for now (David ?)
82      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
83     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
84    o correct a sign problem in cost_scat.F
85    o obcs and ptracers: fix boundary conditions for advections schemes
86      with larger stencil
87    o thsice adjoint: start
88    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
89      completeness
90    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
91      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
92    o ptracers adjoint:
93      * avoid extensive recomputatations
94      * fix missing re-init. of gptr (missed by TAF)
95    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
96      me to turn off the excessive output to STDOUT that this package produces
97    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
98      and add those terms in Vector-Invariant formulation.
99    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
100      if the control period (xx_hfluxperiod etc) is 0
101    o in profiles pkg, clean routines and fix details
102    o in ecco pkg, reading ssh data:
103      fix problem in case the model does not start at iter0=0
104    o fix mnc-pickup/restart for ptracers
105    o new package prifiles:
106      code to compute profile-based cost by Gael Forget
107      (modifs in ecco, ctrl, autodiff)
108    o Benign bug fix in initialization (spotted by M. Mazloff) of
109      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
110    
111    checkpoint58c_post
112    o adjoint: finish NLFS adjoint and provide reference output in
113      verification/global_ocean.90x40x15/results_ad_nlfs
114    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
115      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
116      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
117      with SEAICE_CGRID defined.
118    o move calendarDumps from "data" to "data.cal" and clean-up the code
119      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
120    o add useEXF & useCAL flags (for now, set in hard-coded way)
121    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
122      (were missing in NH mode, and wrong in quasihydrostatic mode).
123      waiting for Chris updated version of calc_gw to add those CALLs.
124    o fix bug in quasihydrostatic S/R ;
125      add a test for this option: global_ocean.90x40x15.qshyd
126    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
127      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
128    o add on/off flag useOffLine for package OFFLINE
129    o seaice:
130      - modify advection so that it works also on the C-grid
131      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
132        problem in multi-tile runs with C-grid
133      - add flags for clipping ice velocities and/or masking solver forcing
134      - fix drag (ocean on ice) formulation and a bug that caused noise in the
135        C-grid solver
136      - added a few comments to seaice_diffusion.F
137      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
138        are now exclusive)
139      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
140        required re-ordering the code a little:
141       + make DAIRN global variable (defined in SEAICE)
142       + move computation of the viscosities eta and zeta into a new separate
143         routine (because I need to recompute them in seaice_ocean_stress.F)
144    
145    checkpoint58b_post
146    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
147      update output.txt of exp. aim.5l_cs.thSI
148    o various mnc cleanups and improvements:
149      + shrink lookup tables by factor of ~4
150      + better error reporting when running out of lookup space
151      + able to handle longer path/file names (up to 500 chars)
152    o adjoint:
153      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
154      - TBD: "hidden" mom_vecinv recomp. in dynamics
155    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
156     (allow to differentiate between forcing components using new integer flags:
157      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
158     and add new flag to put Dissipation tendency out of Adams-Bashforth.
159    o ecco
160      - enable trend removal from SSH anomaly obs.
161    o adjoint
162      - a fix for PmEpR when #undef EXACT_CONSERV
163      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
164      - try to fix "hidden" recomp. in forward_step for NLFS
165        (NLFS seems broken sometimes after I checked it in)
166    o seaice:
167     - add c-grid version of the dynamic solver:
168       + three new routines that are the c-grid substitute lsr, dynsolver
169         and ostres
170       + put a few fields that were local to dynsolver into global common
171         blocks, so that I can move the computation of stresses etc into
172         seaice_lsr (saves coding but may break the adjoint).
173     - replace more hardwired parameters by runtime parameters
174     - add ice masks that mask the rhs of the implicit solvers where there
175       is no ice (commented out in seaice_dynsolver, because i am not sure
176       if this works properly), eventually this should replace the clipping
177       of ice velocities in seaice_dynsolver to +/-40cm/s.
178    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
179      include it only where its needed
180    o move balancing of fluxes before the call of external_forcing_surf
181    o seaice:
182      - correct units of turning angles (now they are really in degrees)
183      - move computation of GWATX/Y out of main routine into dynsolver
184      - initialize GWATX/Y in seaice_init
185    o Apply mask on Fresh-Water flux (needed for SSH forcing).
186      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
187    o seaice: add runtime flags for turning angles (default to zero)
188    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
189      and trend from exf forcing and ctrl control adjustments
190    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
191      (since checkpoint57x_post)
192    o change the default rotation period to 86164.s = the Earth rotation
193    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
194      and based on a reference stratification. Tested within hs94.cs-32x32x5.
195    o seaice advection: add code for choosing between the default (2nd order
196      central differences) and multiDim advection schemes provided by
197      pkg/generic_advdiff
198    o seaice:
199      - removed all references to SEAICE_GRID.h fields from
200        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
201        (cubed-sphere configuration will change a little)
202      - grid computations in seaice_init are obsolete now.
203      - cleaned up code a little so that is easier to read (hopefully).
204      - added new (better?) discretizations of default advection and diffusion
205        (turn on with SEAICEuseFluxForm)
206      - replace 1 in 3d global fields by kSurface in growth.F
207      
208    checkpoint58a_post
209    o seaice:
210      - bug fix in advect.F
211    o shelfice:
212      - separate shelfice load anomaly from pload (breaks with time
213        dependent forcing), => introduce constant field shelficeLoadAnomaly.
214        Its default is 0., but it may be computed more cleverly from (unknown)
215        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
216        done offline. A good approximation of the pressure load anomaly is
217        necessary to avoid large initial adjustment processes underneath
218        deep-reaching shelfice.
219      - small fix in ISOMIP shelfice_thermodynamics
220      - add more sophisticated thermodynamics of Hellmer (1989), this is
221        now the default
222      - give a few constants more intuitive names
223    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
224      if bulk formulae are used in long integration (especially EmPmR). Turn
225      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
226      if balancePrintMean, the imbalance that is substracted is printed to
227      STDOUT.
228    o fix bug (typo) in obcs_apply_eta.F
229    o add a new package shelfice which enables us to model the circulation
230      underneath shelf-ice with draughts of hundreds of meters.
231     - works
232     - to do: + include improved thermodynamics
233              + check whether kSurfC (from model/inc/SURFACE.h) can be used
234                instead of new field kTopC
235              + can we use topoFile, Ro_surf and existing code in ini_depth.F
236                instead of new field R_shelfIce and new code in ini_depth.F
237                and ini_mask_etc.F?
238              + adjust vertical mixing schemes?
239    o seaice pkg:
240     - add a cpp-flag to include a simple formula for a salinity dependent
241       freezing point of sea water at the surface
242     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
243       meridional stresses are now different (and hopefully correct)
244    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
245       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
246       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
247    o pkg/diagnostics: add options and parameters for regional-statistics
248       diagnostics ; define regions by reading a region-mask from a file
249       (might add other options later)
250    o pkg/bulk_force:
251     - add option and parameters to use AIM surface-flux formulae.
252     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
253       others forcing fields (defined in PARM05, parameter file "data") are loaded
254       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
255     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
256     - use the right EXCH call for uwind,vwind (to work on CS-grid).
257     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
258       and parameters (note: calcWindStress replaces .NOT.readwindstress).
259     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
260    
261    checkpoint58
262    o add "--embed-source" option to genmake2 which, when the supporting
263      tools can be compiled (as determined by genmake2) will turn on the
264      embed_files package which then embeds the entire MITgcm source code
265      (*.[fFhc] + Makefile) used for the build within the executable
266      - requested by CNH but off by default
267      - adds a paltry <9MB to the mitgcmuv executable in most cases
268      - only writes the output when useEMBEDSRC in eedata is true
269    o clean up 3-dim. relaxation codes:
270      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
271      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
272      * Thanks to Tom Haine for testing!
273    
274    checkpoint57z_post
275    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
276      affects output (@ truncation level) of exp. plume_on_slope ; updated.
277    o fix the pickup behavior for obcs in combination with ptracers
278    o fix a bug in ptracers_external_fields_load
279    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
280      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
281    o transfered surface NH pressure to eta field (if exactConserv).
282    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
283         and update lab_sea output.txt file.
284    o completing 3-dim. relaxation code: additional term
285         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
286      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
287      * At compile time, in "EXF_OPTIONS.h" set
288          #define  ALLOW_CLIMTEMP_RELAXATION
289          #define  ALLOW_CLIMSALT_RELAXATION
290      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
291          tauThetaClimRelax3Dim = 15552000.0,
292          tauSaltClimRelax3Dim  = 15552000.0,
293      * 3 cases:
294          1) Use a constant-in-time 3-dim. field
295          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
296          3) Real-time relax. to time-evolving prescribed field
297    o Adding Laplacian-type smoothness constraint on
298      initial and boundary (forcing) controls (ic, bc)
299      * enable at compile-time via
300        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
301      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
302      * Absolute scale somewhat unclear so far
303      * no area weighting was included since no other cost term does so far
304    
305    checkpoint57y_post
306    First step for a NLFS adjoint
307    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
308    o new init. routines for calc_r_star, calc_surf_dr
309    o still need to deal with ini_masks_etc
310    o testreport seemed happy
311    checkpoint57y_pre
312    
313    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
314    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
315    o add new offset feature to offline pkg (plus minor cleanup)
316    o cfc fixes for final year of integration
317    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
318      be in GCHEM_OPTIONS).
319    
320    checkpoint57x_post
321    o fix testreport Pb in multiple test experiment.
322    o cleanup our namelist syntax in verification:
323      - make it more F95 standards compliant (some work still needed)
324      - allows the vast majority of our tests to work with gfortran
325    o Non-Hydrostatic:
326     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
327     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
328    o Allow to apply AB on T,S rather than on AB(gT,gS):
329     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
330     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
331       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
332     - need a "clever" read_pickup to restart from the other AB formulation
333    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
334    o remove some unused variables (reduces number of compiler warnings)
335    o adjoint
336      * Disable useVariableViscosity for adjoint for time being
337        (there are a number of extensive recomputations)
338      * Initialize certain variables needed for adjoint
339    
340    checkpoint57w_post
341    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
342                 fix the singleCpuIO RS version of MDSWRITEFIELD
343       and add a WARNING if using globalFiles=T with multi-processors.
344    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
345      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
346    o tracer advection scheme:
347      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
348       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
349       was not very convenient).
350      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
351       (further tests needed for the implicit DST & Flux-Limiter schemes).
352    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
353      and sRef for convenience, handy, when you want to initialize
354      ptracers in a large domain with a constant non-zero value. Also,
355      untangle ptracers_init.F a little.
356    
357    checkpoint57v_post
358    o change dome exp. to use variable viscosity in side-drag terms.
359    o remove all the files from the cfc_offline test since they are now
360      incorporated into tutorial_cfc_offline which has been producing
361      identical results for a few days of testing
362    o add new parameter: sideDragFactor to enable half-slip-side BC
363      and change side-drag S/R to use viscosity from mom_calc_visc
364      (can switch back by setting sideDragFactor=0.); affects results at
365      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
366       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
367    o vorticity & strain are now computed without masking, to account for
368      no-slip-side BC in variable viscosity calculation ; mask is applied
369      anyway later on, before computing advection/coriolis terms.
370    o modify exp4 to test new obcs support for reading from external files
371      and for passive tracers
372    o fix behavior of ptracers_monitor when monitor output is written to a
373      netcdf-file; still not independent of monitor.F (writes in the same
374      file).
375    o change default value of tRef (put a uniform, meaningful value for ocean
376      & atmos) and initialize sRef (was missing, as Martin mentioned).
377    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
378      to be proportional to enstrophy dissipation length.  Thus,
379       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
380      This is now consistent with Smagorinsky and with the manual.
381    
382    checkpoint57u_post
383    o OBCS and PTRACERS: add open boundary support for passive tracers
384      - either use homogenous (pseudo) v.Neumann conditions or prescribe
385        OB-values from file; this is not different from the way theta and salinity
386        are treated
387      - however, Orlanski-radiation conditions are not supported, and the model
388        will stop if you use pTracers and Orlanski at the same time.
389      - beefed up the rountine obcs_external_fields_load: now only those open
390        boundary values are overwritten with values from files for which there
391        are really files, otherwise the OB-fields remain untouched. This makes
392        it possible to use different OBs at different ends of the domain (as
393        with EXF)
394    o reduce number of exch calls in shap_filt (s2).
395    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
396      truncation level) 4/5 MLAdjust test results (11&12 digits match).
397    
398    checkpoint57t_post
399    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
400    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
401      same truncation, independent of the face number: affects affects several
402      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
403    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
404      note that biharmonic viscosity + no-slip was not tested in any experiment.
405    o fix bug in non-linear free-surf side-drag ; generate new output for
406      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
407    o make mnc honor the writeBinaryPrec flag for most kinds of output
408    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
409    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
410      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
411    o add brackets in multi-terms sum to get same truncation, independent of
412      the face number (manage to get exactly same value of gU,gV at the cs-edge)
413      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
414    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
415      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
416      a maximum grid-scale Reynolds number.  Also, changes all length calculations
417      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
418      Suggested values of viscosity parameters found in mom_calc_visc.
419      Many new viscosity diagnostics available.
420    
421    checkpoint57s_post
422    o Add clearing-house for viscosity calculations, mom_calc_visc and
423      correct numerous bugs in LeithD and Smagorinsky discretizations.  
424      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
425      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
426      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
427      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
428      The Strain-Tension form is now called with useStrainTensonVisc=.true.
429      ViscAhStrain and viscAhTension are now retired.
430    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
431    o In response to JMC's bug report, genmake2 now ignores any soft-links
432      that it finds in the *current* directory when searching for files.
433      Soft-links found in any other source directories will still work as
434      they did before.
435    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
436      a C routine to unlimit the stack size
437    o mnc-ify pkg/aim snapshot vars
438    o mnc-ify pkg/land as requested by Daniel
439    o various changes to mnc including:
440      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
441      - output can now be grouped so that all files within a group
442          change the ITER portion of their names in lock-step together
443      - can now read ("global") PER-FACE (in addition to PER-TILE) files
444          and works with both EXCH1 and EXCH2 (but needs more testing)
445      - writing works for all verification test cases w/ g77 on Linux
446    
447    checkpoint57r_post
448    o make MNC variable initialization happen earlier
449    o add diagnostics for (almost) each term of the momentum Eq.
450    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
451    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
452    o remove MINIMAL_TAVE_OUTPUT option ;
453      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
454    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
455      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
456    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
457    o add time-dependent SST, SSS control
458    o cost terms in ecco/ modularized (new cost_generic.F)
459    o cost_averages routines are modularized (new cost_averagesgeneric.F)
460    o new infrastructure for seaice model vs. obs misfits in seaice/
461      * driver from the_main_loop.F is seaice_cost_driver.F
462      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
463      * gradient check in Exp. 6a of natl_box_adjoint/
464    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
465      (see README file)
466    
467    checkpoint57q_post
468    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
469    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
470      - bug was reported by Jean-Michel and Ian Fenty
471    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
472      update exp. cpl_aim+ocn output.
473    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
474      Needed for high-res. runs with large global files
475      to be able to limit tapelev size
476    o Changed some tests for adjoint:
477      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
478      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
479      * global_ocean.90x40x15/ back to default 3-level checkpointing
480    o Modifications to enable scripted COMMON to MODULE conversion
481      * verification/OpenAD/code/ has necessary scripts and description;
482      * converts, compiles and runs successfully;
483    
484    checkpoint57p_post
485    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
486    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
487      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
488    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
489    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
490      (was already the case for dissipation with mom_vecinv,
491       and also the case for grad.PhiHyd when staggered-timeStep)
492      This will allow to put dissipation out-off the AB time-stepping.
493     Unfortunately, affects truncation error. Update output of exp. that "fails"
494      (cg2d matching number) and leave the others for later: front_relax(10),
495      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
496      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
497    
498    checkpoint57o_post
499    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
500      (2) its ready to be documented during the 20050801 DocFest
501    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
502      for ideal_2D_oce and lab_sea on linux_ia32_g77
503    o set to #undef CTRL_SET_OLD_MAXCVARS_30
504      in global1x1_tot/code_seaice_adj to access indices 32, 33
505      (worth another tag)
506    
507    checkpoint57n_post
508    o adding precip control xx_precip 32
509    o adding swflux control xx_swflux 33
510    o Replacing 10 forcing penalty cost routines by 1 generic.
511    o Implementing partitioning in time-mean and variable adjustment
512      for atmos. state.
513    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
514    o in natl_box_adjoint:
515      * updated exp 1 to 10
516        (but does not have time-mean vs. variable split results yet)
517    o updated global1x1/*_seaice_adj/
518      to incorporate latest changes
519    o enable useSingleCpuIO for mdsio vector routines
520      (applies in particular to tapelev I/O)
521    o removed inefficient K-loop in all active_file*control*.F
522    
523    checkpoint57m_post
524    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
525      and advect_cs (use EXCH-2 and standard cs-32 grid files).
526    o pkg/exch2: filling of face-corner halo regions is optional
527      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
528    
529    checkpoint57l_post
530     tag before updating tutorials (pre-release-2)
531    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
532       for output and interpolation of input fields onto model grid)
533    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
534       Affects results of exp. rotating_tank ; update output.txt.
535    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
536          and taking the square quantity and/or using a fraction-weight field.
537    o fix aim_diagnostics_init.F mate numbers.
538    o add mnc output capability to diagnostics/diagstat and update
539      our cvsignore files for the ACSII output generated
540    
541    checkpoint57k_post
542    o lab_sea now uses diagnostics package and provides a suite of
543      new EXF diagnostics output.
544    
545    checkpoint57j_post
546    o exf
547      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
548        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
549        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
550      * extended diagnostics output
551        - now includes all EXF variables
552        - hs, hl moved to common block
553        - separate S/R for diagnostics, called after ctrl vector is added
554        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
555        - EXFqnet contains true Qnet (i.e. includes qsw)
556      * updated verif. lab_sea, global_with_exf
557      * Rearranging hflux (exf_mapfields -> exf_getforcing)
558        to ensure that diagnostics sees a true EXFqnet
559    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
560    o diagnostics pkg: change pointers so that 1 diagnostic can be used
561      several times with different frequencies.
562    o mnc-ify the thsice package as requested by Daniel Enderton
563      - the monitor--MNC output needs work
564      - many attributes need to be added (most are currently blank)
565    o mnc-ify theaim_v23 package as requested by Daniel Enderton
566      - many attributes need to be added (most are currently blank)
567    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
568    o add Sadourny like discretization to the 4th.O vorticity advection scheme
569    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
570      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
571         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
572    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
573     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
574    
575    checkpoint57i_post
576    o Diagnostics package was changed: diagnostic allocation is now deactivated
577      by setting an empty file name in the namelist (used to be by setting 0 frequency)
578    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
579      add 1rst Order upwind vertical Shear.
580    o add a quick fix for A/B checkpointing in OFFLINE mode
581    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
582      end-run around the C/Fortran linking horror in eesup/src/timers.F
583    o added pkg/runclock: allows user to terminate run based on wall clock
584    o added non-hydrostatic scaling parameter: nh_am2
585    o pkg/my82: futile attempt to make results compiler-independent by adding
586      some "_d 0", etc. no effect.
587    o for mnc output, fill the 'T' coordinate var with myTime and create a
588      separate 'iter' variable for iteration count
589    o pkg/diagnostics:
590      add new capability: output of Global/Regional & per-level statistics ;
591      tested against monitor output (including land & thSIce) on various exp.
592    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
593    
594    checkpoint57h_done
595      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
596      data.diagnostics, data.gchem, data.ptracers) is done.
597    
598    o pkg/diagnostics: prepare for Global/Regional statistics.
599      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
600    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
601      and rename it: DIFFERENT_MULTIPLE
602    
603    checkpoint57h_post
604    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
605    o pkg/diagnostics: change output frequency, now in seconds (instead
606      of Nb of iterations). This requires to change data.diagnostics.
607    checkpoint57h_pre
608    
609    o in mnc, let the user create the output dir if both mnc_outdir_date
610      and mnc_outdir_num are false
611    o add fflags() to pkg/diagnostics which allows one to specify, on a
612      per-file basis, the file precision [default behavior is unchanged]
613    o added diagnostics to pkg/kpp, including computation of mixed layer
614      depth based on a temperature/density criterion
615    o updated verification/natl_box to test the new pkg/kpp diagnostics
616    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
617    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
618    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
619      not mnc -- this mistake was found by JMC and is now corrected
620    
621    checkpoint57g_post
622    o add Adams-Bashforth 3rd Order time stepping:
623      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
624      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
625    checkpoint57g_pre
626    
627    o make lambda[Theta,Salt]ClimRelax spatially varying
628      (default remains spatially uniform constant based on tau)
629    o added new control variables
630      * init. uVel, vVel, etanN
631      * lambda[Theta,Salt]ClimRelax
632    o separate masks used for ctrl_pack/unpack 'from write_grid' output
633      (suggested by G. Forget)
634    
635    checkpoint57f_post
636    o add parameter "baseTime" = model base time = time at iteration zero
637      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
638      account for baseTime shift
639    o move Coriolis arrays from PARAMS.h to GRID.h
640    checkpoint57f_pre
641    
642    o mnc-ifying the seaice package
643    o introduced an alternative length scale calculation for use in the limiting
644      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
645    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
646    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
647      as well as grad(vort3).  Made it compatible with both approximate form
648      for the cubed sphere and full form of these gradients.  Added flag
649      useFullLeith to select between approximate and full form.  
650    o add "d0" in getcon.F to reduce differences between compilers/platforms
651      update output.txt of exp. fizhi-gridalt-hs
652    o change port_rand funtion to allow to set the seed.
653    o fix obscure MNC bug involving conversion between reals and integers
654      - it caused no problems with certain (eg. gcc, ifc) compilers but the
655        new version is now more standards-compliant
656    o adjoint-related modifications
657      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
658      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
659      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
660    
661    checkpoint57e_post
662    o Adding eddy stress controls a la Ferreira et al.
663    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
664    
665    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
666      update output.txt of exp. fizhi-gridalt-hs
667    o add more "Z" dimensions and associated coordinate vars to MNC
668    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
669    o parameter calendarDumps: when set, approximate months (30-31 days) and years
670      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
671      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
672      months and years.  Requires pkg/cal.
673    o diagnostics: add pickup functionality
674      - off by default for backwards compatibility
675      - current version only uses MDSIO -- MNC will be added
676    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
677    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
678    
679    checkpoint57d_post
680    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
681    o modify verification/ideal_2D_oce so that it tests the creation of mnc
682      output from the diagnostics package
683    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
684    o make genmake2 more portable by using ".$FS" instead of ".f" for more
685      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
686    o add coordinate variables to the MNC output from the diagnostics package
687    o change MNC-flags default value: true when useMNC=TRUE
688    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
689      the ability (off by default) to read the grid information using MNC
690    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
691    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
692    o do snap-shot diagnostics at the middle of the time-interval (instead of
693      at the end).
694    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
695      new test for AIM with thSIce + slab-ocean
696    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
697    o move state variable diagnostics to the beginning of the time step ;
698      (note: still needs some work specially for snap-shot diagnostics)
699      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
700    
701    checkpoint57c_post
702    o Change testing option (-ieee) to get closer agreement between g77 & ifort
703    o generate new output.txt files on faulks with g77 & the new -ieee option
704    checkpoint57c_pre
705    
706    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
707      update output.txt of exp. global_ocean.90x40x15
708    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
709      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
710    o add saltFlux(+File) forcing capability with periodicExternalForcing
711    o allow to use pkg diagnostics for GM-Redi & ThSIce output
712    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
713    o improvements for the MNC output from DIAGNOSTICS:
714      - correct handling of the unlimitied dimension
715      - all dims now have associated coordinate variables
716      - variables located at U, V, and Corner ("Z") points are now written
717        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
718        *all* data points are output
719    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
720    o added pkg/seaice/seaice_monitor.F
721    o mdsio_readfield.F can now read files visible only to master MPI process.
722    o pkg/seaice: some test code for ice-modified ocean stress
723    o exf_getffields interpolation defaults to bilinear for all scalar forcing
724      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
725      spurious negative numbers for precipitation and humidity.  Will cause
726      some small numerical differences for integrations using pkg/exf/exf_interp.F.
727    o pkg/ctrl/
728      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
729        May be enabled via doPackDiag
730      *  introduce z-scaling of
731         + gradient (doZscalePack) and
732         + control (doZscaleUnpack)
733    o pkg/mdsio/
734      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
735      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
736    
737    checkpoint57b_post
738    o simplify options in diagnostics_fill arguments (remove weird combinations)
739    o fix MNC coordinate variables so that they now contain per-face index
740      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
741      general, EXCH2 grids are only aligned to a "local" coordinate system
742    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
743    o Implement instantaneous output within pkg diagnostics:
744      setting a negative frequency in data.diagnostics produces
745     "snap-shot" output (as opposed to time-average if freq > 0)
746    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
747      NOTE: change ptracer diagnostics name: use 2 characters to work with
748            more than 9 tracers. Add also diagnostics of advect & diffus flux.
749    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
750      becomes the coordinate variable for the 'T' dimension
751    o add CF-style coordinate variables to MNC
752      - just a first cut:  numbers are meaningless on the cubesphere and
753        missing along the T axis but otherwise it works!
754    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
755    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
756    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
757      this is based directly on what the model compute, so that the content of
758      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
759    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
760    o clean up build options files for SunOS, in particular
761      - remove -traditional from xmakedepend
762      - change -xarch=v9 to -xarch=native for f77
763      - restore use of make (not gmake)
764      - add CC=gcc if using g77
765    o changes per discussion of AM, JMC, & EH3 today:
766      - move redundant "grid" variables out of "state" -- in preparation of
767        creating proper CF-style coordinate variables and in recognition
768        that any/all grid variables can be easily copied (eg. w/NCO) from
769        the grid files into any of the other NetCDF files
770      - *always* output grid variables with MDSIO (this will eventually be
771        changed)
772      - output MNC grid file if useMNC is true
773    o every instance of _END_MASTER() has been found and replaced with
774      _END_MASTER( myThid ) in order to satisfy certain picky Sun
775      preprocessors
776    o re-arrange diagnostics pkg initialisation:
777     - allow each package to extend the available diagnostics list
778     - add some checking and fix small problems (multi-threaded, ...)
779     - new S/R diagnostics_fill (replace fill_diagnostics):
780       look through the short list of active diag. (instead of the long list)
781       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
782    
783    checkpoint57a_post
784    o this set of changes restores TAMC compatibility
785      tested for global_ocean.90x40x15 adjoint on trough
786      (what a pain)
787    
788    checkpoint57a_pre
789    o some modifs in tools/build_options for sunos
790    o call ctrl_pack for ctrl at end for optimcycle=0
791    
792    checkpoint57
793    o add horizontal bi-harmonic viscosity for vertical velocity
794      - new parameter viscA4W (defaults to viscA4)
795      - affects only non-hydrostatic code
796      - to be done: no-slip lateral boundary conditions
797    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
798    o implement Implicit Vertical advection for pTracers
799    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
800      (implemented also for implicit vertical diffusion & advection)
801    o OBCS: extend application of tracer open boundary conditions
802      to a strip beyond the boundary of width Olx/Oly
803    o add call monitor to TAF set of required calls (flow directives)
804      and include in natl_box_adjoint
805    o untangle a few ifdefs related to cost, ctrl, autodiff
806      untangel a few ALLOW_ECCO_OPTIMIZATION
807    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
808      (theta2, salt2 in ecco_cost_weights)
809    
810    checkpoint56c_post
811    o OBCS as control variables
812      - update ctrl_ad_diff.list, obcs_ad_diff.list
813      - remove balance of obcs controls from default
814      - fix index bug nobcs in ctrl_init
815      - fix dummy fields filen in ctrl_pack
816      - add dummy weights for obcs
817    o lsopt: comment out fort.94 output
818    o optim:
819      - remove unnecessary header files
820      - adjusted namelists
821      - add xerbla.F to Makefile
822    o exf:
823      - multiple modifications of exf_check_range
824      - unit change in exf_init_runoff from [m/year] to [m/s]
825    o mdsio:
826      - i/o-vector change debugLevel from debLevA to debLevB
827    
828    checkpoint56b_post
829    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
830      is called from DO_THE_MODEL_IO
831      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
832      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
833      - clean up PTRACERS_WRITE_TIMEAVE a little
834    o add another verification experiment that tests both the cfc-pkg and
835      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
836      reactive tendencies treated inline with regular timestepping
837    o testreport previously did a lousy job of comparing small numbers, so
838      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
839      implemented in the little c-progam tmp_cmpnum.c which is embedded in
840      testreport.
841    o ptracers_monitor: bug fix for MPI
842    
843    checkpoint56a_post
844    o GCHEM: finish reorganizating the package
845      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
846        (introduces another 3D-array for each passive tracer, but only if
847        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
848        gchemTendency is not needed because the timestep is done separately)
849      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
850      - GCHEM is now---more or less cleanly---separate from PTRACERS
851      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
852        so clear to me how that should be done in a general way.
853    o CFC: improve formatting of output in CFC_ATMOS
854    o PTRACERS:
855      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
856        that ALL experiments with ptracers enable can be checked. This makes
857        GCHEM_MONITOR obsolete.
858      - include a runtime parameter PTRACERS_monitorFreq that defaults to
859        monitorFreq
860      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
861    o add PTRACERS (PTR0[1-5]) to testreport output
862    o exf_check_range:
863      * default changed to .TRUE.
864      * will check values for niter0 if debLevA, every timestep if debLevB
865      * STOP in exf_check_range if 'out of range'
866      * range chosen generous to allow for potential extema
867      TBD: a version with stricter range
868           permitted range would be runtime parameters
869    o GMredi:
870      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
871      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
872      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
873    o GCHEM:
874      - move call to GCHEM_FORCING_SEP, so that it is now called before
875        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
876      - introduced a useGCHEM runtime flag and applied it everywhere.
877      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
878        this flag is now only visible within GCHEM-pkg routines.
879      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
880        be replaced by a 3D array that is computed before thermodynamics; for
881        this, the tracer ID iTracer had to be included into the parameter list
882        of ptracers_forcing
883      - set up forward_step to call gchem_forcing, that will replace
884        gchem_forcing_int in ptracers_forcing
885      - cleaning up
886    o small cleaning of exch2: remove files that are also in eesupp/src
887    
888    checkpoint56
889    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
890    o mnc: cleanup "full" files--fixes out-of-memory problem
891    o ECCO-GODAE
892      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
893      * fully merged and updated from SIO code
894        windstress sign change affects
895        - exf_inscal_[u/v]stress
896        - sign of xx_tau[u/v] adjustments
897        - signs in cost_scat
898      * ctrl_get_gen: avoid update of tau[u/v] for first few days
899      * natl_box_adjoint updated and compressed
900      * 2-level checkpoint switch added
901        (tested in EXP. 1 of natl_box_adjoint)
902      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
903    o SVD
904      * first complete, non-hacked version for SVD calculations
905      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
906        performed via direct access files admtlm_vector.it????
907        (via ctrl_[un]pack)
908      * optimcycle is used for ARPACK iteration counter
909        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
910      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
911        and add linear transforms where necessary
912      * controls are initial/final SST, SSS (can be extended; need to check
913        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
914    o mdsio: filename info to both stderr, stdout
915    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
916      from sign change
917    
918    checkpoint55j_post
919    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
920      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
921    o add consistent build directories and .cvsignore files to verification
922    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
923    o make all subroutines 30 or less characters in length for certain older
924      compilers to work (a thorough search only turns up two routines in
925      pkg/ptracers)
926    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
927      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
928    
929    checkpoint55i_post
930    o change arrays for total vertical diffusivity (2.D if explicit,
931      3.D if implicit) ; each ptracer uses its own background value.
932    o added mnc/NetCDF output capability to ocn_compon_interf
933      - added bits to verification/cpl_aim+ocn so that it can run on
934        ITRDA and other clusters without the mpirun "-wd" option
935    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
936      configuration
937    o give MNC the ability to create additional files rather than
938      exceeding a specified file size limit "MNC_MAX_FILESIZE"
939      - the default is just less than 2GB which is a practical limit
940        on many systems
941    o Compute the non-local term using either KPP vertical diffusivity (=default)
942       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
943    
944    checkpoint55h_post
945    o add verification test "vermix"
946    o remove all the *_ioinc flags and replace with the single global
947      outputTypesInclusive flag
948    o allow to set a vertical profile of vertical diffusivity for T & S
949    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
950    o useMNC moved from data.mnc to data.pkg
951    
952    checkpoint55g_post
953    o Renaming carbon AD experiments to comply with testreport conventions
954    o Updating adjoint of Held-Suarez hs94.1x64x5
955    o Fixing directives for non-ECCO forward_step, after ECCO directives
956      have been fixed to avoid recomp. of do_oceanic_phys
957      Works well for global_ocean.90x40x15,
958      but recomp. issue remains for carbon
959    o Updating adjoint output for natl_box_adjoint after
960      pkg/ecco has been modified (see taga c55d_post)
961    
962    checkpoint55f_post
963    o rename to timeave_init_fixed
964    
965    checkpoint55e_post
966    o some delicate re-shuffle of store directives to avoid one
967      extra call of do_oceanic_physics
968      affects ecco_the_main_loop.F, do_oceanic_physics.F
969      checkpoint_lev1_directives.h
970    o NB: this may break global_ocean adjoint temporarily,
971      but it is clear how to fix it. Will do later, need this now.
972    
973    checkpoint55d_post
974    o ECCO specific cost function terms (up-to-date with 1x1 runs)
975    o ecco_cost_weights is modified to 1x1 runs
976    o modifs to allow observations to be read in as
977      single file or yearly files
978    o enable to read exf forcing fields as either
979      single file or yearly files (flag useExfYearlyFields)
980    checkpoint55d_pre
981    
982    o switch between 2-level and 3-level checkpointing
983    o add ability of MNC to write local and "partial" (eg. 2D slices where
984      the full 3D field is never actually stored) arrays to NetCDF files
985      with the correct (that is, the complete multi-dimensional) set of
986      array indicies
987      - used in mom_vecinv() to write the diagFreq output
988      - tested (demonstrated) in verification/aim.5l_cs
989    o further mnc-ification
990      - add verification/lab_sea to the list with mnc setups
991      - fix undefined mnc v-names in cd_code
992      - add kpp to mnc output (both snapshot and timeave)
993    o non-hydrostatic code
994      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
995        in calc_gw.F
996      - defaults to viscAh
997      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
998        friction or Leith) in non-hydrostatic mode, as long as there is
999        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1000    o pkg/cost
1001      extend simple cost functions to treat time mean quantities
1002      (T,U,V) via cost_accumulate_state from cost_tile
1003    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1004        be 2 times larger than the minimum size the advection scheme requires.
1005        now get a perfect conservation of salt in advect_cs test-exp (updated)
1006    o GGL90 (Gaspar's TKE mixed layer)
1007      - add horizontal diffusion of TKE, requires exchanges in
1008        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1009        default. In OPA there is no horizontal diffusion of TKE but the
1010        mixing coefficients are computed from a horizontal average of TKE of
1011        6 points or so. I think that diffusion has a little more physical
1012        justification.
1013      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1014        was in vain)
1015      - mask tke-variable in ggl90_init
1016    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1017    o fix biharmonic diffusion on CS-grid.
1018    o more obcs stuff
1019      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1020        for reading boundary values. This routine is called from
1021        obcs_prescribe_read
1022      - updated obcs_check
1023      - changed sponge layer relaxation parameter units for days to seconds
1024      - turned off sponge layer by default
1025      - changed argument list of OBCS_CALC to myTime+deltaTclock
1026      - fixed about 35 bugs in obcs_external_fields_load
1027    
1028    checkpoint55c_post
1029    o obcs stuff
1030      - new runtime flags useOBCSprescribe, useOBCSbalance
1031      - re-arranged obcs_calc
1032      - moved exf_getobcs to obcs_prescibe_read
1033        obcs_prescibe_read is called after ORLANSKI stuff
1034        and independent of it (executable can contain all).
1035      - updated obcs_check
1036      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1037        These may be necessary only if tangential velocities are
1038        prescribed at OB, not sure, needs testing.
1039    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1040      which simplifies the calls and passes the ifc check-bounds test
1041    
1042    checkpoint55b_post
1043    o add a 2D scalar, Z location, exchange_2 routine.
1044    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1045      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1046      affects advect_cs results (for the wrong reason): update output.txt
1047    o use a more standard discretization for biharmonic viscosity ;
1048     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1049      affects results of dome set-up: update output.txt
1050    o fix gad_advection.F (CubedSphere part), back to version 1.23
1051    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1052    
1053    checkpoint55a_post
1054    o merged code to
1055      * prescribe/read time-dependent open boundaries
1056        (works in conjunction with exf, cal)
1057      * sponge layer code for open boundaries
1058      * each boundary N/S/E/W now has its own CPP option
1059        (healthy for the adjoint)
1060    
1061    checkpoint55
1062    o up-to-date adjoint of previous breaks
1063      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1064      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1065      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1066      - carbon: * remove tr1-related adjoint verification
1067                * add ptracer as control variable
1068    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1069      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1070    
1071    checkpoint54f_post
1072    o in verification/carbin/ remove experiment related to
1073      ALLOW_PASSIVE_TRACER (array tr1 etc)
1074      code_ad/ input_ad/ results_ad
1075    
1076    o add two new packages
1077      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1078        + subject to optimization (memory)
1079      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1080        + subject to reordering (many GOTOs in the original code)
1081        + so far opps is called for every (i,j) point, and then operates in
1082          the vertical; one may want to reorder the scheme in order operate in
1083          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1084          fields)
1085    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1086      - all verification tests compile and run with linux_ia32_g77
1087      - defaults are compatible with current input files--nothing
1088        should change if you were not previously using MNC
1089      - MNC output has been added in numerous places (eg. timeave)
1090        but there are still a few writes not yet do-able with MNC
1091        (this is in progress)
1092      - flags now allow for either/or/both use of MDSIO and MNC and
1093        documentation will soon follow
1094      - numerous small formatting cleanups for ProTeX
1095    o add version info (via BUILD_INFO.h) to MNC and stdout
1096    
1097    checkpoint54e_post
1098    o add two new packages
1099      - pp81 (Packanowski and Philander, 1981), Richardson number and
1100        stratification dependent mixing
1101      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1102      - these scheme operate in a similar manner as KPP (without ghat, of
1103        course), however there is only one diffusivity that is used for both
1104        temperature and salinity (and passive tracers)ç
1105    o add offline package
1106    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1107      provided by Stephanie Dutkiewicz
1108    o genmake2: add ability to search for C compilers and cleanup test output
1109      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1110    
1111    checkpoint54d_post
1112    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1113    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1114      leading to additional shift by 5 days each year of integration
1115       (i.e. leading to considerable offset over the years)
1116    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1117    o start with no AB and no initial filtering (staggerTimeStep):
1118      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1119    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1120      (external loading & cpl import/export stay in forward_step.F)
1121    o update coupling interface to work with new staggerTimeStep
1122    o change MDSIO ptracers_pickup.
1123    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1124    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1125    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1126    
1127    checkpoint54c_post
1128    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1129      this affects (truncation error) output.txt of test-exp:
1130       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1131    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1132    o change Qnet to always be the net heat flux, (+upward).
1133      affects (truncation error) output of natl_box exp.: updated
1134    o define the max number of passive tracers in PTRACERS_SIZE.h
1135    o start to test mnc routinely in exp0
1136    o add sea-ice loading (sIceLoad) as a new forcing field.
1137    
1138    checkpoint54b_post
1139    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1140       impressive on Altix and Opteron systems)
1141    o diagnostics can now write NetCDF files through the mnc package
1142    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1143    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1144    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1145      affects (truncation error) output of lab_sea & natl_box exp.: updated
1146    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1147    
1148    checkpoint54a_post
1149    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1150    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1151    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1152    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1153      + internal_wave (shift in writing cg2d_ini_res)
1154    checkpoint54a_pre
1155    
1156    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1157      - modified verification/lab_sea and natl_box_adjoint accordingly
1158    
1159    checkpoint54
1160    checkpoint53g_post
1161    o prepare splitting of thermodynamics: store convect.counter in common block
1162    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1163      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1164    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1165    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1166    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1167    o restore adjointability
1168    
1169    checkpoint53f_post
1170    o modifications that affect AIM experiment results (update output.txt):
1171      - no advection of S at top interface Nr (pkg/generic_advdiff)
1172      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1173    o AIM pkg:
1174      - include stability function into surf.Flux derivative relative to Tsurf
1175      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1176    
1177    checkpoint53e_post
1178    o merged cylindrical coord configuration
1179    o added rotating_tank experiment
1180    checkpoint53e_pre
1181    
1182    checkpoint53d_post
1183    o faulks upgraded: re-generate output.txt that have changed:
1184       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1185    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1186    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1187    o added Sadourny discretization of Coriolis
1188      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1189      - re-enabled use of omega3 (useAbsVorticity)
1190    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1191      vector-invariant equations
1192      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1193    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1194      hopefully without new bugs
1195      - still to do: biharmonic friction for non-hydrostatic w
1196    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1197    o regenerated output for global_ocean_ebm (using -ieee)
1198    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1199      of mom_common/
1200      - simple re-arrangement of instructions within computing loop
1201    checkpoint53d_pre
1202    
1203    checkpoint53c_post
1204    o new version of coupler for AIM+thSIce and Ocean models
1205     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1206     - land: change Evaporation of snow
1207     - aim with thSIce: fix bug in snow-precip.
1208    o changes to calc_gw.F
1209     - bug fix for w^2 term near the bottom boundary
1210     - (hopefully) improve the lateral slip boundary condtions for use with
1211        partial/looped cells
1212      - because the bug fix changes two verification experiments anyway (exp5
1213        and plume on slope), change the lateral boundary condition from half slip
1214        to the value of no_slip_sides
1215    o ebm package wasnt quite up to the parallel task. Fixed that.
1216    o Adjoint of EBM package + verification
1217      * TLM OK
1218      * ADM not sufficient accuracy yet (needs further testing)
1219    
1220    checkpoint53b_post
1221    o Commiting new energy balance model to repository
1222      * package is pkg/ebm
1223      * verif. is verification/global_ocean_ebm
1224      * references are in ebm_driver.F
1225    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1226    C        Global thermohaline circulation. Part I:
1227    C        Sensitivity to atmospheric moisture transport.
1228    C        J. Climate 12(1), 71-82
1229    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1230    C        Global thermohaline circulation. Part II:
1231    C        Sensitivity with interactive transport.
1232    C        J. Climate 12(1), 83-91
1233    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1234    C        Destabilization of the thermohaline circulation
1235    C        by atmospheric eddy transports.
1236    C        J. Climate 7(12), 1870-1882
1237    o Will need long integration testing.
1238    checkpoint53b_pre
1239    
1240    o created pkg/mom_common in preparation for variable viscosity code
1241    o renamed and split ini_mnc_io
1242    o pkg/land: only liquid water can diffuse or run-off
1243    o AIM using land: soil wetness availability account for snow
1244    o added printMapIncludesZeros to EEPARMS namelist
1245    
1246    checkpoint53a_post
1247    o restore TAMC compatiility for exf_constants.h
1248      (no usage of _d in .h)
1249    o Additional storing in KPP in an attempt to fix
1250      TAMC problem with adjoint of KPP code.
1251      (no success...)
1252      Identical code works fine with TAF.
1253    o Fixed verification/natl_box_adjoint experiments.
1254      Initial conditions for Experiments 4 and 5 are now
1255      set to "SEAICE_initialHEFF=0", which is more reasonable,
1256      and hence gives results closer to that of Experiment 2.
1257      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1258    
1259    checkpoint53
1260    o stable checkpoint with up to date adjoint
1261      TLM tests only run for 1st grdchk at the moment. Its unclear if
1262      this is a code problem or a problem with resetting code for g_
1263      variables that is being autogenerated wrong.
1264      Otherwise:
1265       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1266       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1267         are both still in chaos following their security messes.
1268    
1269    checkpoint52n_post
1270    o various build (mostly genmake2) changes including:
1271      - ability to build/run more easily within Cygwin and MacOS X
1272      - more complicated Makefiles with a stronger dependence on Gnu Make
1273    o pkg/seaice modifications
1274      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1275        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1276        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1277      - changed proxy for geostrophic velocity and updated
1278        verification/lab_sea/results/* accordingly
1279      - removed ADI dynamic solver from pkg/seaice
1280      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1281        they caused a segmentation fault under certain circumstances
1282      - removed unused field WATR
1283    o bug fix in exf-package:
1284      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1285         now reflect that.
1286    o small fixes in the cal-package:
1287      - set reference date to first of January for the 'model'-calendar
1288      - failing of cal_CheckDate in cal_FullDate now actually results in a
1289        warning
1290    o small modifications in exf-package to increase flexibility:
1291      - change climtempfreeze from a constant to a runtime parameter that
1292        is specified in data.exf_clim (default = -1.9)
1293      - introduce runtime parameter windstressmax (default = 2.0) that is
1294        specified in data.exf
1295    o fix in pkg/thsice:
1296      - update Evap (Tsf changes) to be consistent with Latent heat flux
1297      - maintain snow precipitation unchanged (even if Tsf >=0).
1298     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1299    
1300    checkpoint52m_post
1301    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1302      this does not change any of the results, because myIter=0 in swfrac always
1303      lead to jwtype=2 (the default anyway), but the call makes little sense
1304      as a default
1305    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1306    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1307      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1308    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1309    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1310    o extending useSingleCpuIO option to work with new exch2 I/O format
1311      - old-style, missing-tile I/O is still accessible by defining CPP
1312        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1313    o monitor package can write to NetCDF files and/or STDOUT
1314    o fix re-definition bug in MNC_GRID_INIT_ALL()
1315    o doc/api_reference added
1316      - a framework for building an API Reference Manual using all
1317        the "protex" comments embedded in the code
1318      - see pkg/generic_advdiff, pkg/mnc for examples
1319    o MNC:
1320      - make myThid the last argument for all subroutines
1321      - new default for the grid files: NO halos
1322      - add useMNC and other run-time flags
1323      - separate per-file-group handling of the unlimited dimension
1324      - early initialization of MNC w/ flags read at the eeboot stage
1325        and lookup tables set in initialize_fixed
1326      - write all MNC output to a freshly-created directory
1327    o thermodynamics sea-ice (thsice) is now tested with testreport.
1328    o test exp. advect_cs: use the standard cs32 grid ; update output.
1329    o Added functionality to grdchk:
1330      pick global i,j,k position (or nearest wet) where to perform check.
1331    
1332    checkpoint52l_post
1333    o new land formulation:
1334      a) use ground enthalpy as prognostic variable to ensure exact
1335         energy conservation.
1336      b) account for water temperature and for latent heat of freezing
1337         in all processes (rain, run-off, ground storage)
1338      c) compute surface and ground temperature implicitly.
1339    o aim_v23 modification for new land model:
1340      a) Treat separately land / ocean / sea-ice surface fluxes
1341         to allow implicit computation of land & sea-ice surface temp.
1342      b) add snow precipitation.
1343    checkpoint52l_pre
1344    
1345    o fix problem (when 1 tile is empty) in min/max monitor.
1346    o fix bug in timeAve (u,vZetatave in common block)
1347    o no restoring terms under ice for pkg/seaice
1348    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1349    o bug fix for pkg/seaice pickups
1350    o change MNC call locations and add coordinate attributes
1351    o mask vorticity at the corner ; affects global_ocean.cs output
1352    o fix ini_curvilinear_grid ; test CS experiments with mpi
1353    o aim.5l_cs: modify sea-ice fraction input file ; update output
1354    o exf: Adding simple range check routine for exf fields after read
1355    
1356    checkpoint52k_post
1357    o removed top-level directory "diags"
1358      - we migrated these functions to pkg/timeave a long time ago
1359    o fixed bug introduced in pkg/monitor
1360    o accuracy ctrlprec = 32 insuffient for gradient checks using
1361      averaged fields (I/O via cost_averages)
1362      -> use ctrl.h in active_file*.F to control I/O precision.
1363    o paramter list of CALL ADTHE_MAIN_LOOP
1364    o added initial do_the_model_io to ecco
1365    o set all ...Freq to zero after cost_final
1366      taveFreq, dumpFreq, pChkptFreq
1367    o MAIN and ECCO differentiability restored
1368    
1369    checkpoint52j_post
1370    o fix nchklev in tamc.h for global_ocean...
1371    o Bringing flow and store directives up-to-date
1372    o Really weird thing!
1373      call do_the_model_io from the_main_loop with parameters
1374      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1375      TAF places a faulty re-call of initialise_varia
1376      after cost_final call which should not be there!
1377    checkpoint52j_pre
1378    
1379    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1380      error messages
1381    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1382    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1383      debug output
1384    o modfied mdsio_writefield.F to handle non-global files under exch2
1385    o update AIM Cubed-Sphere exp (aim.5l_cs):
1386      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1387    o update AIM Equatorial Channel exp:
1388      use standard aim_v23 pkg and change the SST fields to be more realistic.
1389    o globalFile now works with exch2
1390    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1391      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1392    o limit timeave output for hi-res integrations
1393    
1394    checkpoint52i_post
1395    o removed CPP_EEOPTIONS.h from verification/*/code
1396    o updated the tiling for global_ocean_pressure
1397    checkpoint52i_pre
1398    
1399    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1400      the old pkg/aim).
1401    
1402    checkpoint52h_pre
1403    o shortened offending lines in exch2_send_rx?.template
1404    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1405    o genmake2: add build & execute test for NetCDF code
1406    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1407      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1408    o added useSingleCPUIO flag to monitor.F and mon_out.F
1409    o added temporary hack for sea-ice dynamics on the cube:
1410      metric terms are ignored and it is assumed that
1411      there is no sea-ice on cube faces 1, 2, 4, and 5.
1412    
1413    checkpoint52f_post
1414    o added exch2 cube routines to pkg/exch2
1415    o modified hs94.cs-32x32x5 to use it
1416    o added new grid files to hs94.cs-32x32x5
1417    checkpoint52f_pre
1418    
1419    checkpoint52e_post
1420    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1421      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1422    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1423      to work with implicit vertical advection and AB ;
1424    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1425    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1426     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1427    checkpoint52e_pre
1428    
1429    o fix bug in impldiff when Nr=1 or Nr=2.
1430    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1431    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1432    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1433      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1434    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1435    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1436    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1437    
1438    checkpoint52d_post
1439    o re-tiled many expts to allow comparison in multi-processor mode
1440      - updated output accordingly
1441      - changed hs94.128x64x5 to use intial T from file rather than use the
1442        random number generator
1443    o add infrastructure in model routines for fizhi and gridalt packages
1444    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1445    o changes to permit hi-res, cubed-sphere, configuration
1446      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1447      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1448      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1449        of surface winds for the cube
1450      (A verification experiment, based on global_ocean.cs32x15, but with
1451       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1452       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1453       complete with example surface forcing files and matlab scripts to look
1454       at the output and compare it with that of global_ocean.cs32x15.)
1455    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1456       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1457       to conform to the common rule.
1458    o check-in the first version of the coupler + interfaces for multi-components
1459       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1460       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1461       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1462       - ocean and atmos. share the same horizontal grid (no interpolation).
1463       - exchanges between component and coupler is done in forward_step
1464    o new verification experiment, cpl_aim+ocn:
1465       coupled ocean - AIM atmosphere on cs32 grid.
1466    
1467    checkpoint52d_pre
1468    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1469    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1470    
1471    checkpoint52c_post
1472    o Fixing OPTIONS files for use of exf:
1473      - ALLOW_ECCO not needed
1474      - ECCO_CPPOPTIONS.h should not be included from
1475        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1476        as has been the case in the past
1477      - All cal/exf related options are currently set in
1478        single header file. Should remain so until we
1479        agree on a consistent new policy.
1480    o Removed all CPP options for cal package.
1481      cal has no more CPP options.
1482    o modified STOREs in GAD_ADVECTION
1483    o corrected key comp. for passkey
1484    
1485    checkpoint52b_post
1486    o new version: "thsice" of thermodynamic sea-ice pkg:
1487     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1488     - modify fluxes but do not change theta directly;
1489     - light cleaning of bulk_force pkg (still needed with thsice).
1490     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1491       + output_thsice.txt to test thsice & bulk_force pkgs.
1492    o put back grid & coriolis monitor output.
1493    checkpoint52b_pre
1494    
1495    o call "do_the_model_io" at the beginning (=> dump initial state)
1496    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1497    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1498      (need info on NUMBER_OF_PTRACERS)
1499    o missing PTRACERS headers in some routines
1500    o default tamc.h in pkg/autodiff supposed to crash
1501      to ensure proper customization
1502    
1503    checkpoint52a_post
1504    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1505      - moved surfaceTendencyTice from pkg/seaice to main code
1506      - subroutine FREEZE_SURFACE now limits only surface temperature
1507        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1508        => new output.txt for global_ocean.cs32x15 & global_with_exf
1509      - keep the old version of FREEZE for backward compatibility;
1510        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1511      - corresponding modifs for TAF directives
1512    o added surface flux output variables to TIMEAVE_STATVARS
1513    o time-averaged output for pkg/ptracers
1514    o fix problem with ECCO-related divided adjoint
1515      snapshot file was missing some ad-variables,
1516      but no warning issued by TAF
1517    
1518    checkpoint52a_pre
1519    o some bug fixes for #undef REAL4_IS_SLOW
1520    
1521    checkpoint52 = ecco_c52_e35
1522    o after testing adjoints of checkpoint51u_post
1523    
1524    checkpoint51u_post
1525    o this is the post-merge tag of the ecco-branch
1526      (needs another clean checkout and re-testing)
1527    o various natl_box_adjoint configs and results
1528      but no input fields
1529    o obcs adjoint not yet merged!
1530    o adding ECCO global 1x1 and 2x2 degree configs
1531    o updated/extended some store directives for seaice
1532    o pkg/ecco now containes ecco-specific part of cost function
1533    o top level routines the_main_loop, forward_step
1534      supersede those in model/src/
1535      previous input data.cost now in data.ecco
1536      (new namelist ecco_cost_nml)
1537    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1538    
1539    checkpoint51t_post
1540    o this is the pre-merge tag of the ecco-branch
1541    
1542    checkpoint51s_post
1543    o cleanup: removed various obsolete #define-s
1544    o pkg/grdchk
1545      - renamed 'ph-grd 3' to 'grad-res'
1546      - merged from ecco-branch
1547        (remaining bug fixes for obcs gradient checks)
1548      - additional high-precision output for testreport
1549        (grep for 'precision_grdchk_result')
1550    
1551    checkpoint51r_post
1552    o cleaned up or removed CPP_OPTIONS.h files
1553    o updated results for some of the tests to reflect the new
1554      optfiles (-ieee: -O0 instead of -O3)
1555    
1556    checkpoint51q_post
1557    o cd_code:
1558      - moved cd_scheme.F -> cd_code_scheme.F
1559      - separate read_checkpoint from cd_code_ini_vars.F
1560      - separated cd_code part from write_checkpoint
1561      - updated AD_SOURCE, generated .flow
1562      - added CD_CODE_VARS.h to the_main_loop
1563      - Moving cd_code specific store dir.s to pkg/cd_code
1564    o ctrl package totally restructured
1565      - pack/unpack now optional and decoupled from
1566        xx_/adxx_ I/O
1567      - ctrl_pack/unpack cleaned
1568        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1569      - confined inclusion of AD_CONFIG.h to where necessary.
1570    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1571    
1572    checkpoint51p_post
1573    o create initial cd_code package
1574      - WARNING: the initialization of fields within packages
1575        is broken because INI_FIELDS (where READ_CHECKPOINT is
1576        called) is called *before* PACKAGES_INIT_VARIABLES.
1577        This seems to be backwards since
1578        1) its important to initially zero the entire field including
1579           the "halo" region
1580        2) zeroing needs to be done *before* reading pickup info
1581           and the pickup call might or might not happen in any
1582           particular run
1583      - this needs an overhaul for R2
1584    o cleanup verification/*/code/GMREDI_OPTIONS.h
1585    o cleanup testreport
1586    
1587    checkpoint51o_post
1588    o bringing AD-related verif's up to date with genmake2
1589      - carbon/
1590      - global_ocean.90x40x15/
1591      - hs.94.1x64x5/
1592      - (front_relax/ )
1593    o (more) consistent directory structure for AD-related verif.'s
1594    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1595    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1596    o bug fix in find_alpha.F for MDJWF:
1597      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1598        change rho -> rho-rhoConst
1599      - replace call find_rho to find_rhonum
1600    o initialisation of rFlx extended to full array (required by TAF)
1601      and shifted to thermodynamics
1602    o removed PTRACERS.h in ptracers routine
1603    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1604    o Correcting initialisations for fVerU, fVerV.
1605    o helping TAF to recognize dependency on kUp for
1606      fVerU, fVerV
1607    o Replacing delZ by delR in pkg/ctrl/
1608    checkpoint51o_pre
1609    
1610    o undid all of cp51 pending some cleanups and discussion
1611    o added the [#include "AD_CONFIG.h"] statement to all files that need
1612       it for adjoint/tl #defines
1613     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1614     o removed tools/genmake since it no longer works
1615    
1616    checkpoint51n_post
1617    o modifications to make FREEZE flux visible to pkg/kpp
1618      - moved surfaceTendencyTice from pkg/seaice to main code
1619      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1620      - subroutine FREEZE now limits only surface temperature
1621        (this means new output.txt for global_ocean.90x40x15,
1622         global_ocean.cs32x15, and global_with_exf)
1623    o added surface flux output variables to TIMEAVE_STATVARS
1624    
1625    checkpoint51n_pre
1626    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1627    o added [#include "AD_CONFIG.h"] to all files that use the following
1628      defines:
1629      - ALLOW_ADJOINT_RUN
1630      - ALLOW_TANGENTLINEAR_RUN
1631      - ALLOW_ECCO_OPTIMIZATION
1632    
1633    checkpoint51m_post
1634    o incorporating changes to get TAMC/TAF working in genmake2
1635      - added new TAMC/TAF targets to the Makefile
1636      - various cleanups related to package handling
1637      - these changes should have no impact on the forward model
1638    
1639    checkpoint51l_post
1640    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1641     - faster algorithm for cal_addtime.F
1642     - higher precision arithmetic, where needed
1643     - pkg/exf *startdate variables changed from calendar date to
1644       model integration time
1645    
1646    checkpoint51l_pre
1647    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1648    o enable to apply restoring on S & T only in a latitude band.
1649    o update output (external_forcing_surf modif. change truncation errors)
1650       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1651    
1652    checkpoint51k_post
1653    o change default to: useNHMTerms=.FALSE.
1654     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1655       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1656     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1657        exp1, ideal_2D_oce
1658     - change data file of oceanic exp (leave the results unchanged for now)
1659       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1660    o set gravitySign automatically according to the vertical coordinate used
1661      (and change sign: back to "logical" value: +1 when R increases downward)
1662    o added an include barrier to the default CPP_OPTIONS.h and
1663      removed the #include "PACKAGES_CONFIG.h" from it
1664    o fix a bug in mom_fluxform (from chk51j_post)
1665    
1666    checkpoint51j_post
1667    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1668    o adjusted some flow directives (dynamics, thermodynamics)
1669    o added cubed-sphere case to test cost function
1670    o heckpoint_lev?_directives.h now include
1671      pkg-specific directives, whenever those are enabled.
1672    o Moving pkg-specific flow directives to corresponding pkg
1673      Moving pkg-specific differentiation list to corresponding pkg
1674      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1675      ---> conventions are
1676           - pkg_ad.flow
1677           - pkg_ad_diff.list
1678           - pkg_ad_check_lev?_dir.h
1679    
1680    checkpoint51i_post
1681    o merge of the branch-genmake2
1682      - knowingly breaks the older genmake
1683      - automatic generation of all ALLOW_${PKG_NAME} defines
1684      - new testreport supersedes older testscript
1685    o large number of package inclusion and header cleanups
1686    checkpoint51i_pre
1687    
1688    o new output for adjoin of global ocean vector invariant
1689    o fix for checkpoint of thermodynamic seaice and bulk_force
1690    o Steph gchem various cleanups
1691    
1692    checkpoint 51h_pre
1693    o fixed some single quotes
1694    o modify gchem pkg to be more versatile
1695    o modifications to clean up dic pkg
1696    o add pkg/cfc
1697    
1698    checkpoint51g_post
1699    o provide links for ARPACK and ADM*TLM
1700    o start removing verification/vero/
1701    o update AD-related stuff
1702      (in particular some IF-statements in model/src/ routines)
1703    o adding to verification/global_ocean.90x40x15/ adjoint of
1704      vector invariant setup
1705    
1706    checkpoint51f_post
1707    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1708    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1709      of tracer Green's fucntions for ocean inversion project.
1710    
1711    checkpoint51f_pre
1712    o Added on-the-fly spatial interpolation capability
1713        "USE_EXF_INTERPOLATION" to pkg/exf.
1714      - This is a temporary Cartesian-grid hack until
1715        the super-duper ESMF coupler becomes available.
1716      - See verification/global_with_exf/README for usage example.
1717      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1718        flags and modified pkg/seaice accordingly.
1719    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1720        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1721        non-local transport term.
1722    
1723    checkpoint51e_post
1724    o pkg/mom_vecinv:
1725      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1726      - add time-ave diagnostic of vorticity advection.
1727    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1728    o atmospheric geopotential: - include water vapor effect;
1729                                - use p^kappa in p* scaling.
1730    o land pkg: read initial state from files.
1731    o AIM : add stratospheric drag in the upper level
1732    
1733    checkpoint51d_post
1734    o change function ILNBLNK (=> last non-blank char.) to return zero
1735      (instead of the string length) when the string. char is empty
1736    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1737    o modif's to restore TAMC compatibility
1738      - avoid "_d" constructs in PARAMETER declarations
1739      - avoid interrupting lines by comment lines
1740    o Use cluster local disks for purely local I/O
1741      vs. globally visible disks needed for ctrl stuff
1742      (merged from ecco-branch)
1743      - new active_file_loc... and mdsio_..._loc routines
1744      - affected packages: autodiff, ctrl, grdchk, mdsio
1745    
1746    checkpoint51c_post
1747    o introducing integer flag debugLevel
1748      - debLevZero: suppress all output
1749      - debLevA: standard
1750      - debLevB: equivalent to current debugMode=.TRUE.
1751    o introducing pathname variable mdsioLocalDir for mdsio
1752      that can be specified at runtime
1753      (relevant for cluster I/O to local disk)
1754    `
1755    >>>checkpoint51b_post
1756    adjoint of ptracers
1757    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1758    o extended state in checkpoint_lev?, etc.
1759    o alternative ctrl/cost with tr1 or ptracer
1760    o new comlev1_bibj_ptracers
1761    o new ptracers.flow
1762    o made ptracers_forcing same as external_forcing_s
1763    o added verification for adjoint with ptracers
1764      - adm. grdchk fail so far
1765      - tlm. grdchk OK
1766      - checked tapelev/comlev recomputations: OK
1767    <<<checkpoint51b_pre
1768    
1769    checkpoint51a_post
1770    o added code for biogeochemistry package
1771      - new pkgs: dic, gchem
1772      - new subroutine in ptracers
1773    o modify code for biogeo packages
1774      - in model/src and pkg/ptracers
1775    
1776    checkpoint51
1777    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1778      - autodiff, ctrl, exf, grdchk, seaice
1779      kept separate packages
1780      - cost, ecco, obcs
1781    o updating verification/internal_wave, verification/lab_sea
1782      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1783    
1784    checkpoint50i_post
1785    o Preparing next differentiable checkpoint and sync
1786      of MAIN vs. ecco-branch
1787      - 1st step: this one is differentiable
1788      - 2nd step: next(! not this) checkpoint will have updated packages
1789                  from ecco-branch)
1790    
1791    checkpoint50h_post
1792    o new package "land": provide surface BC for AIM.
1793    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1794    o AIM: use true log-P extrapolation for near surface temp (= as in
1795        F.Molteni paper) ; update aim.5l_cs output.
1796    o New variable in PARM03 for more flexible pickups
1797    o somewhat cleaned package initialisation sequence for
1798      ctrl/ cost/ ecco/ in packages_... routines
1799    
1800    checkpoint50g_post
1801    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1802      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1803      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1804        made the default because of faster convergence than ADI
1805    
1806    checkpoint50f_post
1807    o exf totally restructured
1808      - replaced all exf_set_ routines by one generic exf_set_gen.F
1809        and made sure it's still differentiable
1810      - split exf_getffields.F into new exf_bulkformulae.F
1811      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1812      - updated adjoint/makefile and relevant verif. accordingly
1813    
1814    checkpoint50f_pre
1815     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1816          + change Evap over land. (update aim.5l_cs output)
1817     o added missing .cvsignores and made uniform across expts
1818     o changed configuration of tidal_basin_2d expt
1819     o added pkg/debug functions for tracing code in fatal crashes
1820     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1821     o new fn in pkg/monitor to stop model if solution grows too big
1822     o removed lots of single quotes from comments
1823    
1824    checkpoint50e_post
1825    o make KPP work with PTRACERS
1826     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1827       nearly a copy of kpp_transport_s
1828     - there is no analogue to SurfaceTendencyS, so I have to use
1829       gPtr(of the surface layer) instead
1830    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1831    checkpoint50e_pre
1832    
1833    checkpoint50d_post
1834    o change kpp output from multiple-record state files to single-record state
1835      files analogous to write_state.F
1836    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1837      analogous to the cg2d-related output.
1838    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1839      so that writing to internal file fn (with length 512) fails.
1840    checkpoint50d_pre
1841    
1842    checkpoint50c_post
1843    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1844    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1845    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1846    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1847    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1848    
1849    checkpoint50c_pre
1850    Merging from release1_p13:
1851    o bug fix for pkg/seaice dynamic solver
1852    o Added SEAICE_initialHEFF to pkg/seaice
1853    
1854    checkpoint50b_post
1855    o store u*,v* in gU,V instead of in guNm1,gvNm1
1856    o in order to put the momForcing out of the Adams-Bashforth:
1857      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1858      to timestep.F
1859    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1860    o re-generate output for highly sensitive test-exp:
1861       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1862    
1863    checkpoint50b_pre
1864    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1865    o corrected CPP option mismatch in exf_Bulk... functions for case
1866      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1867    
1868    checkpoint50a_post
1869    o Bug fix for merging between c50 and KPP.
1870      ikey was passed from thermodynamics to kpp_calc via
1871      common block rather than being recomputed in kpp_calc,
1872      in contradiction with new key itdkey.
1873      New key ikppkey created, and tamc.h headers updated.
1874    
1875    checkpoint50
1876    - 2nd step of merge with ecco-branch:
1877      merge changes in ecco-branch back into main trunk
1878    - bug fix in find_alpha
1879    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1880    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1881    - merged some sliced AD support routines
1882    
1883    checkpoint49
1884    merged from ecco-branch:
1885    o exf:
1886      - Enable initialisation of forcing fields to constant
1887        (runtime) values.
1888      - in exf_getffields.F
1889        Reduce i-/j-loop to interior domain, discarding overlaps.
1890        That also fixes wrong TAF-key computations for key_1, key_2
1891        with bulf formulae.
1892      - exf_init.F modify #ifdef for exf_init_evap
1893      - exf_getffieldrec.F, ctrl_getrec.F
1894        The following INT-usages are not safe:
1895          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1896          fldcount = int(fldsecs/fldperiod) + 1
1897        and were modified.
1898    o autodiff: checkpoint_lev...
1899      - updated storing for bulk formulae (some arrays were missing)
1900      - added state for seaice package
1901      - synchronized with main branch
1902    o DIVA:
1903      Modif.s in
1904      - the_main_loop.F
1905      - the_model_main.F
1906      and added cost_final_restore.F cost_final_store.F
1907      o With these changes, it is possible to fully separate
1908        the first forward run to compute the cost function (mdthe_main_loop)
1909        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1910        into separate model executions.
1911        This enables better tuning of DIVA to given queue sizes.
1912      o Loss of cost function value in consecutive DIVA runs is
1913        fixed by storing to 'costfinal' file.
1914      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1915        beginning/end of adjoint integration is accounted for.
1916      The current changes apply to TAF-1.4.26.
1917      TAF has one remaining bug, requiring one manual change
1918      (see MITgcm manual).
1919    o cal: synchronized between MAIN and ecco-branch
1920    
1921    checkpoint48i_post
1922    o Changes to restore differentiability of code w.r.t. previous tag
1923      (mostly adding new routines to make list and replacing
1924      pressure by totPhiHyd).
1925    o Updated and merged grdchk package
1926      - has both ADM and TLM checks
1927      - works for single- and multi-proc.
1928      - output cleaned
1929      - worked successfully for parallel DIVA
1930    o genmake:
1931      - Adding -platform=SP4
1932      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1933    o Modif. for DIVA:
1934      ctrl_unpack should not be called in intermediate DIVA interval.
1935      (similar thing would apply for active files such as
1936      tbar, sbar, psbar, which should not be reinitialised;
1937      only relevant for ecco-branch)
1938    
1939    checkpoint48h_post
1940    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1941    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1942    o Added SEAICE_initialHEFF to pkg/seaice
1943    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1944    
1945    checkpoint48g_post
1946    --- EOS:
1947    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1948      store total Potential in totPhyHyd for diagnostics & EOS.
1949    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1950    --- Pressure/geopotential gradient:
1951    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1952    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1953      ( changes results of global_ocean_pressure )
1954    o NLFS + z-coord.: add eta*Rho' contribution.
1955    o accurate phiHyd when using interface-W at the middle between 2 centers
1956     ( changes results of ideal_2D_oce )
1957    o includes r* 2nd term in potential gradient.
1958    
1959    checkpoint48f_post
1960    Merging from release1_p12:
1961    o Modifications for using pkg/exf with pkg/seaice
1962      - improved description of the various forcing configurations
1963      - added basic radiation bulk formulae to pkg/exf
1964      - units/sign fix for evap computation in exf_getffields.F
1965      - updated verification/global_with_exf/results/output.txt
1966    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1967      (SBO) core products, including oceanic mass, center-of-mass,
1968      angular, and bottom pressure (see pkg/sbo/README.sbo).
1969    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1970      to avoid negative values in shallow regions.
1971      - updated verification/natl_box/results/output.txt
1972      - updated verification/lab_sea/results/output.txt
1973    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1974    o Added useSingleCpuIO option (see PARAMS.h).
1975    o Updated useSingleCpuIO option in mdsio_writefield.F to
1976      work with multi-field files, e.g., for single-file pickup.
1977    o pkg/seaice:
1978      - bug fix in growth.F: QNET for no shortwave case
1979      - added HeffFile for specifying initial sea-ice thickness
1980      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1981    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1982      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1983    o pkg/seaice:
1984      - adjoint-friendly modifications
1985      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1986    
1987    checkpoint48e_post
1988    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1989    o dynamics: change definition of computational domain & adapt mom_fluxform
1990      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1991    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1992        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1993        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1994        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1995        inverted_barometer solid-body.cs-32x32x1
1996      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1997    
1998    checkpoint48d_post
1999    o in preparation for r*:
2000     a) use pre-computed gradient of hydrostatic potential:
2001        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2002     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2003        => affects results of glob_oce_pressure (different truncation error)  
2004      update output.txt of ideal_2D_oce & global_ocean_pressure
2005    
2006    checkpoint48d_pre
2007    o in preparation for r*:
2008      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2009      pass the 2 comp. of the grad. as arguments to momentum S/R.
2010      but for the moment, only used if it does not change the results.
2011    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2012    
2013    checkpoint48c_post
2014    Modifications in treatment of initial flux forcing controls
2015    to avoid extra storing of flux fields.
2016    
2017    checkpoint48c_pre
2018  o Added tidal_basin_2d experiment (currently 1D!)  o Added tidal_basin_2d experiment (currently 1D!)
2019  o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)  o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2020    

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