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revision 1.107 by cheisey, Mon Dec 2 13:28:30 2002 UTC revision 1.707 by jmc, Sun Jul 16 03:59:39 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 add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
8       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
9    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
10       keep global_ocean.90x40x15 (for AD testing) with former secondary test
11       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
12    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
13        add MITgcm_tutorials (= code + all the tutorials)
14    o ecco, option to compute cost for total ssh (mean+anom)
15    o consistent with addition of ptracer and ssh in pkg/profiles
16    o profiles: adding ptracer and ssh
17    o testreport: change multi-test output-file name
18      (from output.txt.{name} to output.{name}.txt)
19    o profiles: now ok for mutli-threaded case
20    o seaice: add 4 parameters for different advection schemes for area,
21      (effective) seaice thickness, enthalphy, and snow height. Their default
22      is the standard parameter SEAICEadvScheme
23    o calc_gw:
24     - add cosFacU in zonal viscous flux (harmonic.visc.).
25     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
26       of tutorial_plume_on_slope.
27    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
28    o calc_gw: true flux-form, account for horizontal grid spacing.
29      update rotating_tank results, but not plume_on_slope (affected at
30      truncation level, 11 digits).
31    
32    checkpoint58l_post
33    o calc_gw:
34     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
35     - remove side-drag for now (need to fix it); update plume_on_slope results.
36     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
37    o commit code to make SST/SSS weights spatially variable
38      (based on either variable in-situ or variable initial T/S weights)
39    o pkg/ecco:
40      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
41        now based on horizontally varying weights wthetaLev, wsaltLev
42      * cost_averagesflags now returns year indices in addition to day, month
43      * sflux balance is performed on annual basis
44        (sflxumm, sfluxmm2, bal_sfluxmm)
45      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
46        including separate counting and multipliers
47    o pkg/rbcs
48      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
49    
50    checkpoint58k_post
51    o testreport:
52     - always build in dir. "build" (if not there, mkdir build instead of building
53       & running in input)
54     - run in dir run (if it exists), in build otherwise.
55     - call prepare_run (if input/prepare_run exists)
56     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
57    o pkg/exf modifications to interpolation and rotation routines for more
58       reasonable treatment of North Pole singularity: for tracers North Pole
59       value is set to northernmost zonal-mean value, for zonal velocity it is
60       set to zero, and for meridional velocity it is set to northernmost value.
61    o pkg/exf/exf_check_range.F
62     - add tile index to diagnostics and move stop statement to the very
63       end of the routine.
64    o pkg/diagnostics: (diagnostics_main_init.F)
65      define title of isomorphic variables according to the current config.
66    o pkg/thsice with pkg/seaice dynamics:
67    - fix domain of computation (interior only, required for exf) and do exchanges
68    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
69    o towards a standard way of dealing with multi-threading in MONITOR
70      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
71    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
72       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
73    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
74    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
75    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
76       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
77    o tracer advection:
78     - clean-up and simplify calc_common_factors.F
79     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
80       advection subroutine (but still not used within DST advection S/R)
81    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
82    
83    checkpoint58j_post
84    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
85      from file (collects calls previously in FORWARD_STEP)
86    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
87    o adjoint store dir. adjusted accordingly
88    o genmake2
89      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
90    
91    checkpoint58i_post
92    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
93      on wind stress (SEAICEstressFactor defaults to 1.)
94    o Total number of Timers is finite (<=40): comment out 2 non-essential one
95      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
96    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
97      on CS-grid: no longer loosing mass.
98    o exf & curvilinear-grid: no longer modify longitude xC & xG.
99    o pkg/ggl90: fix sloppy output and fix a bug
100    o pkg/seaice: added SEAICEuseEVPpickup parameter
101      - Set to false in order to start EVP solver with
102        non-EVP pickup files when using SEAICEuseEVP
103      - fix sign error in diffusion in seaice_calc_rhs
104    
105    checkpoint58h_post
106    * Modifications for bottom topography control
107      o replace hFacC by _hFacC at various places
108      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
109      o add non-self-adjoint cg2d_nsa
110      o update autodiff support routines
111      o re-initialise hfac after ctrl_depth_ini
112      o works for 5x5 box, doesnt work for global_ocean.90x40x15
113    * Adding verification for 5x5 box (4-layer) bottom topography control
114    
115    checkpoint58g_post
116    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
117       used for mean seasonal cycle, mean diurnal cycle); add an example
118       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
119    o pkg/ggl90:
120      - add parameter (minimum surface kinetic energy)
121      - fix bug (avoiding division by zero)
122    o couple pkg/thsice to pkg/seaice:
123      - modify advection in seaice to accomodate new scalar fields to be advected
124      - only muliDimAdection scheme work with seaice/thsice
125      - mapping of thsice-variables to seaice-variables, back and forth
126      - does not break the verification experiments, but does not give the
127        desired results either
128    o pkg/seaice
129      - make (default) second order advection a bit less confusing?
130    
131    checkpoint58f_post
132    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
133      to pkg/seaice):
134      - new routines thsice_map_exf and thsice_get_exf provide the interface
135      - add an additional formal parameter to thsice_solve4temp
136    o pkg/exf:
137      - add new fields wspeed, snowprecip (to be able to couple to thsice)
138      - correct Stefan-Boltzmann constant
139      - new parameter for longwave surface emittance
140      - separate some stuff from exf_bulkformulae into new routines  
141        exf_radiation, exf_wind
142      - add new parameters and constants: longwave emissivity for ocean, ice
143        and snow, evaporation parameters over ice
144      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
145        either wind from stress or stress from wind
146    o pkg/thSIce:
147    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
148    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
149       and THSICE_CALC_THICKN
150    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
151    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
152      to make debugging easier.
153    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
154    o pkg/bulk_force:
155      - clean-up comments and parameters ;
156      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
157    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
158      generate new output for test-experiment: aim.5l_cs.thSI
159    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
160      testreport accordingly
161    
162    checkpoint58e_post
163    o SEAICE_CGRID adjoint done
164    o R_STAR adjoint implemented.
165      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
166      * need to sort out init. of h0facc, etc.
167    o Make pkg/profile fully independent of ecco,cost, etc. stuff
168      to be able to use it in pure forward.
169    
170    checkpoint58d_post
171    o upgrade simple test-experiment to tutorial example:
172     step.1: duplicate the experiment and (step.2) will remove the old copy.
173      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
174      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
175      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
176      tutorial_global_oce_biogeo    <- copy of dic_example
177      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
178      tutorial_plume_on_slope       <- copy of plume_on_slope
179      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
180      tutorial_global_oce_optim     <- empty for now (David ?)
181      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
182     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
183    o correct a sign problem in cost_scat.F
184    o obcs and ptracers: fix boundary conditions for advections schemes
185      with larger stencil
186    o thsice adjoint: start
187    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
188      completeness
189    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
190      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
191    o ptracers adjoint:
192      * avoid extensive recomputatations
193      * fix missing re-init. of gptr (missed by TAF)
194    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
195      me to turn off the excessive output to STDOUT that this package produces
196    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
197      and add those terms in Vector-Invariant formulation.
198    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
199      if the control period (xx_hfluxperiod etc) is 0
200    o in profiles pkg, clean routines and fix details
201    o in ecco pkg, reading ssh data:
202      fix problem in case the model does not start at iter0=0
203    o fix mnc-pickup/restart for ptracers
204    o new package prifiles:
205      code to compute profile-based cost by Gael Forget
206      (modifs in ecco, ctrl, autodiff)
207    o Benign bug fix in initialization (spotted by M. Mazloff) of
208      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
209    
210    checkpoint58c_post
211    o adjoint: finish NLFS adjoint and provide reference output in
212      verification/global_ocean.90x40x15/results_ad_nlfs
213    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
214      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
215      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
216      with SEAICE_CGRID defined.
217    o move calendarDumps from "data" to "data.cal" and clean-up the code
218      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
219    o add useEXF & useCAL flags (for now, set in hard-coded way)
220    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
221      (were missing in NH mode, and wrong in quasihydrostatic mode).
222      waiting for Chris updated version of calc_gw to add those CALLs.
223    o fix bug in quasihydrostatic S/R ;
224      add a test for this option: global_ocean.90x40x15.qshyd
225    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
226      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
227    o add on/off flag useOffLine for package OFFLINE
228    o seaice:
229      - modify advection so that it works also on the C-grid
230      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
231        problem in multi-tile runs with C-grid
232      - add flags for clipping ice velocities and/or masking solver forcing
233      - fix drag (ocean on ice) formulation and a bug that caused noise in the
234        C-grid solver
235      - added a few comments to seaice_diffusion.F
236      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
237        are now exclusive)
238      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
239        required re-ordering the code a little:
240       + make DAIRN global variable (defined in SEAICE)
241       + move computation of the viscosities eta and zeta into a new separate
242         routine (because I need to recompute them in seaice_ocean_stress.F)
243    
244    checkpoint58b_post
245    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
246      update output.txt of exp. aim.5l_cs.thSI
247    o various mnc cleanups and improvements:
248      + shrink lookup tables by factor of ~4
249      + better error reporting when running out of lookup space
250      + able to handle longer path/file names (up to 500 chars)
251    o adjoint:
252      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
253      - TBD: "hidden" mom_vecinv recomp. in dynamics
254    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
255     (allow to differentiate between forcing components using new integer flags:
256      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
257     and add new flag to put Dissipation tendency out of Adams-Bashforth.
258    o ecco
259      - enable trend removal from SSH anomaly obs.
260    o adjoint
261      - a fix for PmEpR when #undef EXACT_CONSERV
262      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
263      - try to fix "hidden" recomp. in forward_step for NLFS
264        (NLFS seems broken sometimes after I checked it in)
265    o seaice:
266     - add c-grid version of the dynamic solver:
267       + three new routines that are the c-grid substitute lsr, dynsolver
268         and ostres
269       + put a few fields that were local to dynsolver into global common
270         blocks, so that I can move the computation of stresses etc into
271         seaice_lsr (saves coding but may break the adjoint).
272     - replace more hardwired parameters by runtime parameters
273     - add ice masks that mask the rhs of the implicit solvers where there
274       is no ice (commented out in seaice_dynsolver, because i am not sure
275       if this works properly), eventually this should replace the clipping
276       of ice velocities in seaice_dynsolver to +/-40cm/s.
277    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
278      include it only where its needed
279    o move balancing of fluxes before the call of external_forcing_surf
280    o seaice:
281      - correct units of turning angles (now they are really in degrees)
282      - move computation of GWATX/Y out of main routine into dynsolver
283      - initialize GWATX/Y in seaice_init
284    o Apply mask on Fresh-Water flux (needed for SSH forcing).
285      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
286    o seaice: add runtime flags for turning angles (default to zero)
287    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
288      and trend from exf forcing and ctrl control adjustments
289    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
290      (since checkpoint57x_post)
291    o change the default rotation period to 86164.s = the Earth rotation
292    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
293      and based on a reference stratification. Tested within hs94.cs-32x32x5.
294    o seaice advection: add code for choosing between the default (2nd order
295      central differences) and multiDim advection schemes provided by
296      pkg/generic_advdiff
297    o seaice:
298      - removed all references to SEAICE_GRID.h fields from
299        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
300        (cubed-sphere configuration will change a little)
301      - grid computations in seaice_init are obsolete now.
302      - cleaned up code a little so that is easier to read (hopefully).
303      - added new (better?) discretizations of default advection and diffusion
304        (turn on with SEAICEuseFluxForm)
305      - replace 1 in 3d global fields by kSurface in growth.F
306      
307    checkpoint58a_post
308    o seaice:
309      - bug fix in advect.F
310    o shelfice:
311      - separate shelfice load anomaly from pload (breaks with time
312        dependent forcing), => introduce constant field shelficeLoadAnomaly.
313        Its default is 0., but it may be computed more cleverly from (unknown)
314        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
315        done offline. A good approximation of the pressure load anomaly is
316        necessary to avoid large initial adjustment processes underneath
317        deep-reaching shelfice.
318      - small fix in ISOMIP shelfice_thermodynamics
319      - add more sophisticated thermodynamics of Hellmer (1989), this is
320        now the default
321      - give a few constants more intuitive names
322    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
323      if bulk formulae are used in long integration (especially EmPmR). Turn
324      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
325      if balancePrintMean, the imbalance that is substracted is printed to
326      STDOUT.
327    o fix bug (typo) in obcs_apply_eta.F
328    o add a new package shelfice which enables us to model the circulation
329      underneath shelf-ice with draughts of hundreds of meters.
330     - works
331     - to do: + include improved thermodynamics
332              + check whether kSurfC (from model/inc/SURFACE.h) can be used
333                instead of new field kTopC
334              + can we use topoFile, Ro_surf and existing code in ini_depth.F
335                instead of new field R_shelfIce and new code in ini_depth.F
336                and ini_mask_etc.F?
337              + adjust vertical mixing schemes?
338    o seaice pkg:
339     - add a cpp-flag to include a simple formula for a salinity dependent
340       freezing point of sea water at the surface
341     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
342       meridional stresses are now different (and hopefully correct)
343    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
344       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
345       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
346    o pkg/diagnostics: add options and parameters for regional-statistics
347       diagnostics ; define regions by reading a region-mask from a file
348       (might add other options later)
349    o pkg/bulk_force:
350     - add option and parameters to use AIM surface-flux formulae.
351     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
352       others forcing fields (defined in PARM05, parameter file "data") are loaded
353       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
354     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
355     - use the right EXCH call for uwind,vwind (to work on CS-grid).
356     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
357       and parameters (note: calcWindStress replaces .NOT.readwindstress).
358     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
359    
360    checkpoint58
361    o add "--embed-source" option to genmake2 which, when the supporting
362      tools can be compiled (as determined by genmake2) will turn on the
363      embed_files package which then embeds the entire MITgcm source code
364      (*.[fFhc] + Makefile) used for the build within the executable
365      - requested by CNH but off by default
366      - adds a paltry <9MB to the mitgcmuv executable in most cases
367      - only writes the output when useEMBEDSRC in eedata is true
368    o clean up 3-dim. relaxation codes:
369      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
370      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
371      * Thanks to Tom Haine for testing!
372    
373    checkpoint57z_post
374    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
375      affects output (@ truncation level) of exp. plume_on_slope ; updated.
376    o fix the pickup behavior for obcs in combination with ptracers
377    o fix a bug in ptracers_external_fields_load
378    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
379      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
380    o transfered surface NH pressure to eta field (if exactConserv).
381    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
382         and update lab_sea output.txt file.
383    o completing 3-dim. relaxation code: additional term
384         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
385      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
386      * At compile time, in "EXF_OPTIONS.h" set
387          #define  ALLOW_CLIMTEMP_RELAXATION
388          #define  ALLOW_CLIMSALT_RELAXATION
389      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
390          tauThetaClimRelax3Dim = 15552000.0,
391          tauSaltClimRelax3Dim  = 15552000.0,
392      * 3 cases:
393          1) Use a constant-in-time 3-dim. field
394          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
395          3) Real-time relax. to time-evolving prescribed field
396    o Adding Laplacian-type smoothness constraint on
397      initial and boundary (forcing) controls (ic, bc)
398      * enable at compile-time via
399        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
400      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
401      * Absolute scale somewhat unclear so far
402      * no area weighting was included since no other cost term does so far
403    
404    checkpoint57y_post
405    First step for a NLFS adjoint
406    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
407    o new init. routines for calc_r_star, calc_surf_dr
408    o still need to deal with ini_masks_etc
409    o testreport seemed happy
410    checkpoint57y_pre
411    
412    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
413    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
414    o add new offset feature to offline pkg (plus minor cleanup)
415    o cfc fixes for final year of integration
416    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
417      be in GCHEM_OPTIONS).
418    
419    checkpoint57x_post
420    o fix testreport Pb in multiple test experiment.
421    o cleanup our namelist syntax in verification:
422      - make it more F95 standards compliant (some work still needed)
423      - allows the vast majority of our tests to work with gfortran
424    o Non-Hydrostatic:
425     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
426     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
427    o Allow to apply AB on T,S rather than on AB(gT,gS):
428     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
429     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
430       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
431     - need a "clever" read_pickup to restart from the other AB formulation
432    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
433    o remove some unused variables (reduces number of compiler warnings)
434    o adjoint
435      * Disable useVariableViscosity for adjoint for time being
436        (there are a number of extensive recomputations)
437      * Initialize certain variables needed for adjoint
438    
439    checkpoint57w_post
440    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
441                 fix the singleCpuIO RS version of MDSWRITEFIELD
442       and add a WARNING if using globalFiles=T with multi-processors.
443    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
444      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
445    o tracer advection scheme:
446      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
447       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
448       was not very convenient).
449      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
450       (further tests needed for the implicit DST & Flux-Limiter schemes).
451    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
452      and sRef for convenience, handy, when you want to initialize
453      ptracers in a large domain with a constant non-zero value. Also,
454      untangle ptracers_init.F a little.
455    
456    checkpoint57v_post
457    o change dome exp. to use variable viscosity in side-drag terms.
458    o remove all the files from the cfc_offline test since they are now
459      incorporated into tutorial_cfc_offline which has been producing
460      identical results for a few days of testing
461    o add new parameter: sideDragFactor to enable half-slip-side BC
462      and change side-drag S/R to use viscosity from mom_calc_visc
463      (can switch back by setting sideDragFactor=0.); affects results at
464      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
465       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
466    o vorticity & strain are now computed without masking, to account for
467      no-slip-side BC in variable viscosity calculation ; mask is applied
468      anyway later on, before computing advection/coriolis terms.
469    o modify exp4 to test new obcs support for reading from external files
470      and for passive tracers
471    o fix behavior of ptracers_monitor when monitor output is written to a
472      netcdf-file; still not independent of monitor.F (writes in the same
473      file).
474    o change default value of tRef (put a uniform, meaningful value for ocean
475      & atmos) and initialize sRef (was missing, as Martin mentioned).
476    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
477      to be proportional to enstrophy dissipation length.  Thus,
478       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
479      This is now consistent with Smagorinsky and with the manual.
480    
481    checkpoint57u_post
482    o OBCS and PTRACERS: add open boundary support for passive tracers
483      - either use homogenous (pseudo) v.Neumann conditions or prescribe
484        OB-values from file; this is not different from the way theta and salinity
485        are treated
486      - however, Orlanski-radiation conditions are not supported, and the model
487        will stop if you use pTracers and Orlanski at the same time.
488      - beefed up the rountine obcs_external_fields_load: now only those open
489        boundary values are overwritten with values from files for which there
490        are really files, otherwise the OB-fields remain untouched. This makes
491        it possible to use different OBs at different ends of the domain (as
492        with EXF)
493    o reduce number of exch calls in shap_filt (s2).
494    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
495      truncation level) 4/5 MLAdjust test results (11&12 digits match).
496    
497    checkpoint57t_post
498    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
499    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
500      same truncation, independent of the face number: affects affects several
501      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
502    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
503      note that biharmonic viscosity + no-slip was not tested in any experiment.
504    o fix bug in non-linear free-surf side-drag ; generate new output for
505      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
506    o make mnc honor the writeBinaryPrec flag for most kinds of output
507    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
508    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
509      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
510    o add brackets in multi-terms sum to get same truncation, independent of
511      the face number (manage to get exactly same value of gU,gV at the cs-edge)
512      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
513    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
514      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
515      a maximum grid-scale Reynolds number.  Also, changes all length calculations
516      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
517      Suggested values of viscosity parameters found in mom_calc_visc.
518      Many new viscosity diagnostics available.
519    
520    checkpoint57s_post
521    o Add clearing-house for viscosity calculations, mom_calc_visc and
522      correct numerous bugs in LeithD and Smagorinsky discretizations.  
523      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
524      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
525      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
526      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
527      The Strain-Tension form is now called with useStrainTensonVisc=.true.
528      ViscAhStrain and viscAhTension are now retired.
529    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
530    o In response to JMC's bug report, genmake2 now ignores any soft-links
531      that it finds in the *current* directory when searching for files.
532      Soft-links found in any other source directories will still work as
533      they did before.
534    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
535      a C routine to unlimit the stack size
536    o mnc-ify pkg/aim snapshot vars
537    o mnc-ify pkg/land as requested by Daniel
538    o various changes to mnc including:
539      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
540      - output can now be grouped so that all files within a group
541          change the ITER portion of their names in lock-step together
542      - can now read ("global") PER-FACE (in addition to PER-TILE) files
543          and works with both EXCH1 and EXCH2 (but needs more testing)
544      - writing works for all verification test cases w/ g77 on Linux
545    
546    checkpoint57r_post
547    o make MNC variable initialization happen earlier
548    o add diagnostics for (almost) each term of the momentum Eq.
549    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
550    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
551    o remove MINIMAL_TAVE_OUTPUT option ;
552      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
553    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
554      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
555    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
556    o add time-dependent SST, SSS control
557    o cost terms in ecco/ modularized (new cost_generic.F)
558    o cost_averages routines are modularized (new cost_averagesgeneric.F)
559    o new infrastructure for seaice model vs. obs misfits in seaice/
560      * driver from the_main_loop.F is seaice_cost_driver.F
561      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
562      * gradient check in Exp. 6a of natl_box_adjoint/
563    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
564      (see README file)
565    
566    checkpoint57q_post
567    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
568    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
569      - bug was reported by Jean-Michel and Ian Fenty
570    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
571      update exp. cpl_aim+ocn output.
572    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
573      Needed for high-res. runs with large global files
574      to be able to limit tapelev size
575    o Changed some tests for adjoint:
576      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
577      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
578      * global_ocean.90x40x15/ back to default 3-level checkpointing
579    o Modifications to enable scripted COMMON to MODULE conversion
580      * verification/OpenAD/code/ has necessary scripts and description;
581      * converts, compiles and runs successfully;
582    
583    checkpoint57p_post
584    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
585    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
586      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
587    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
588    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
589      (was already the case for dissipation with mom_vecinv,
590       and also the case for grad.PhiHyd when staggered-timeStep)
591      This will allow to put dissipation out-off the AB time-stepping.
592     Unfortunately, affects truncation error. Update output of exp. that "fails"
593      (cg2d matching number) and leave the others for later: front_relax(10),
594      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
595      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
596    
597    checkpoint57o_post
598    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
599      (2) its ready to be documented during the 20050801 DocFest
600    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
601      for ideal_2D_oce and lab_sea on linux_ia32_g77
602    o set to #undef CTRL_SET_OLD_MAXCVARS_30
603      in global1x1_tot/code_seaice_adj to access indices 32, 33
604      (worth another tag)
605    
606    checkpoint57n_post
607    o adding precip control xx_precip 32
608    o adding swflux control xx_swflux 33
609    o Replacing 10 forcing penalty cost routines by 1 generic.
610    o Implementing partitioning in time-mean and variable adjustment
611      for atmos. state.
612    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
613    o in natl_box_adjoint:
614      * updated exp 1 to 10
615        (but does not have time-mean vs. variable split results yet)
616    o updated global1x1/*_seaice_adj/
617      to incorporate latest changes
618    o enable useSingleCpuIO for mdsio vector routines
619      (applies in particular to tapelev I/O)
620    o removed inefficient K-loop in all active_file*control*.F
621    
622    checkpoint57m_post
623    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
624      and advect_cs (use EXCH-2 and standard cs-32 grid files).
625    o pkg/exch2: filling of face-corner halo regions is optional
626      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
627    
628    checkpoint57l_post
629     tag before updating tutorials (pre-release-2)
630    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
631       for output and interpolation of input fields onto model grid)
632    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
633       Affects results of exp. rotating_tank ; update output.txt.
634    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
635          and taking the square quantity and/or using a fraction-weight field.
636    o fix aim_diagnostics_init.F mate numbers.
637    o add mnc output capability to diagnostics/diagstat and update
638      our cvsignore files for the ACSII output generated
639    
640    checkpoint57k_post
641    o lab_sea now uses diagnostics package and provides a suite of
642      new EXF diagnostics output.
643    
644    checkpoint57j_post
645    o exf
646      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
647        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
648        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
649      * extended diagnostics output
650        - now includes all EXF variables
651        - hs, hl moved to common block
652        - separate S/R for diagnostics, called after ctrl vector is added
653        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
654        - EXFqnet contains true Qnet (i.e. includes qsw)
655      * updated verif. lab_sea, global_with_exf
656      * Rearranging hflux (exf_mapfields -> exf_getforcing)
657        to ensure that diagnostics sees a true EXFqnet
658    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
659    o diagnostics pkg: change pointers so that 1 diagnostic can be used
660      several times with different frequencies.
661    o mnc-ify the thsice package as requested by Daniel Enderton
662      - the monitor--MNC output needs work
663      - many attributes need to be added (most are currently blank)
664    o mnc-ify theaim_v23 package as requested by Daniel Enderton
665      - many attributes need to be added (most are currently blank)
666    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
667    o add Sadourny like discretization to the 4th.O vorticity advection scheme
668    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
669      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
670         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
671    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
672     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
673    
674    checkpoint57i_post
675    o Diagnostics package was changed: diagnostic allocation is now deactivated
676      by setting an empty file name in the namelist (used to be by setting 0 frequency)
677    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
678      add 1rst Order upwind vertical Shear.
679    o add a quick fix for A/B checkpointing in OFFLINE mode
680    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
681      end-run around the C/Fortran linking horror in eesup/src/timers.F
682    o added pkg/runclock: allows user to terminate run based on wall clock
683    o added non-hydrostatic scaling parameter: nh_am2
684    o pkg/my82: futile attempt to make results compiler-independent by adding
685      some "_d 0", etc. no effect.
686    o for mnc output, fill the 'T' coordinate var with myTime and create a
687      separate 'iter' variable for iteration count
688    o pkg/diagnostics:
689      add new capability: output of Global/Regional & per-level statistics ;
690      tested against monitor output (including land & thSIce) on various exp.
691    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
692    
693    checkpoint57h_done
694      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
695      data.diagnostics, data.gchem, data.ptracers) is done.
696    
697    o pkg/diagnostics: prepare for Global/Regional statistics.
698      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
699    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
700      and rename it: DIFFERENT_MULTIPLE
701    
702    checkpoint57h_post
703    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
704    o pkg/diagnostics: change output frequency, now in seconds (instead
705      of Nb of iterations). This requires to change data.diagnostics.
706    checkpoint57h_pre
707    
708    o in mnc, let the user create the output dir if both mnc_outdir_date
709      and mnc_outdir_num are false
710    o add fflags() to pkg/diagnostics which allows one to specify, on a
711      per-file basis, the file precision [default behavior is unchanged]
712    o added diagnostics to pkg/kpp, including computation of mixed layer
713      depth based on a temperature/density criterion
714    o updated verification/natl_box to test the new pkg/kpp diagnostics
715    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
716    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
717    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
718      not mnc -- this mistake was found by JMC and is now corrected
719    
720    checkpoint57g_post
721    o add Adams-Bashforth 3rd Order time stepping:
722      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
723      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
724    checkpoint57g_pre
725    
726    o make lambda[Theta,Salt]ClimRelax spatially varying
727      (default remains spatially uniform constant based on tau)
728    o added new control variables
729      * init. uVel, vVel, etanN
730      * lambda[Theta,Salt]ClimRelax
731    o separate masks used for ctrl_pack/unpack 'from write_grid' output
732      (suggested by G. Forget)
733    
734    checkpoint57f_post
735    o add parameter "baseTime" = model base time = time at iteration zero
736      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
737      account for baseTime shift
738    o move Coriolis arrays from PARAMS.h to GRID.h
739    checkpoint57f_pre
740    
741    o mnc-ifying the seaice package
742    o introduced an alternative length scale calculation for use in the limiting
743      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
744    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
745    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
746      as well as grad(vort3).  Made it compatible with both approximate form
747      for the cubed sphere and full form of these gradients.  Added flag
748      useFullLeith to select between approximate and full form.  
749    o add "d0" in getcon.F to reduce differences between compilers/platforms
750      update output.txt of exp. fizhi-gridalt-hs
751    o change port_rand funtion to allow to set the seed.
752    o fix obscure MNC bug involving conversion between reals and integers
753      - it caused no problems with certain (eg. gcc, ifc) compilers but the
754        new version is now more standards-compliant
755    o adjoint-related modifications
756      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
757      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
758      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
759    
760    checkpoint57e_post
761    o Adding eddy stress controls a la Ferreira et al.
762    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
763    
764    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
765      update output.txt of exp. fizhi-gridalt-hs
766    o add more "Z" dimensions and associated coordinate vars to MNC
767    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
768    o parameter calendarDumps: when set, approximate months (30-31 days) and years
769      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
770      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
771      months and years.  Requires pkg/cal.
772    o diagnostics: add pickup functionality
773      - off by default for backwards compatibility
774      - current version only uses MDSIO -- MNC will be added
775    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
776    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
777    
778    checkpoint57d_post
779    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
780    o modify verification/ideal_2D_oce so that it tests the creation of mnc
781      output from the diagnostics package
782    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
783    o make genmake2 more portable by using ".$FS" instead of ".f" for more
784      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
785    o add coordinate variables to the MNC output from the diagnostics package
786    o change MNC-flags default value: true when useMNC=TRUE
787    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
788      the ability (off by default) to read the grid information using MNC
789    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
790    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
791    o do snap-shot diagnostics at the middle of the time-interval (instead of
792      at the end).
793    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
794      new test for AIM with thSIce + slab-ocean
795    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
796    o move state variable diagnostics to the beginning of the time step ;
797      (note: still needs some work specially for snap-shot diagnostics)
798      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
799    
800    checkpoint57c_post
801    o Change testing option (-ieee) to get closer agreement between g77 & ifort
802    o generate new output.txt files on faulks with g77 & the new -ieee option
803    checkpoint57c_pre
804    
805    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
806      update output.txt of exp. global_ocean.90x40x15
807    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
808      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
809    o add saltFlux(+File) forcing capability with periodicExternalForcing
810    o allow to use pkg diagnostics for GM-Redi & ThSIce output
811    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
812    o improvements for the MNC output from DIAGNOSTICS:
813      - correct handling of the unlimitied dimension
814      - all dims now have associated coordinate variables
815      - variables located at U, V, and Corner ("Z") points are now written
816        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
817        *all* data points are output
818    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
819    o added pkg/seaice/seaice_monitor.F
820    o mdsio_readfield.F can now read files visible only to master MPI process.
821    o pkg/seaice: some test code for ice-modified ocean stress
822    o exf_getffields interpolation defaults to bilinear for all scalar forcing
823      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
824      spurious negative numbers for precipitation and humidity.  Will cause
825      some small numerical differences for integrations using pkg/exf/exf_interp.F.
826    o pkg/ctrl/
827      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
828        May be enabled via doPackDiag
829      *  introduce z-scaling of
830         + gradient (doZscalePack) and
831         + control (doZscaleUnpack)
832    o pkg/mdsio/
833      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
834      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
835    
836    checkpoint57b_post
837    o simplify options in diagnostics_fill arguments (remove weird combinations)
838    o fix MNC coordinate variables so that they now contain per-face index
839      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
840      general, EXCH2 grids are only aligned to a "local" coordinate system
841    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
842    o Implement instantaneous output within pkg diagnostics:
843      setting a negative frequency in data.diagnostics produces
844     "snap-shot" output (as opposed to time-average if freq > 0)
845    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
846      NOTE: change ptracer diagnostics name: use 2 characters to work with
847            more than 9 tracers. Add also diagnostics of advect & diffus flux.
848    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
849      becomes the coordinate variable for the 'T' dimension
850    o add CF-style coordinate variables to MNC
851      - just a first cut:  numbers are meaningless on the cubesphere and
852        missing along the T axis but otherwise it works!
853    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
854    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
855    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
856      this is based directly on what the model compute, so that the content of
857      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
858    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
859    o clean up build options files for SunOS, in particular
860      - remove -traditional from xmakedepend
861      - change -xarch=v9 to -xarch=native for f77
862      - restore use of make (not gmake)
863      - add CC=gcc if using g77
864    o changes per discussion of AM, JMC, & EH3 today:
865      - move redundant "grid" variables out of "state" -- in preparation of
866        creating proper CF-style coordinate variables and in recognition
867        that any/all grid variables can be easily copied (eg. w/NCO) from
868        the grid files into any of the other NetCDF files
869      - *always* output grid variables with MDSIO (this will eventually be
870        changed)
871      - output MNC grid file if useMNC is true
872    o every instance of _END_MASTER() has been found and replaced with
873      _END_MASTER( myThid ) in order to satisfy certain picky Sun
874      preprocessors
875    o re-arrange diagnostics pkg initialisation:
876     - allow each package to extend the available diagnostics list
877     - add some checking and fix small problems (multi-threaded, ...)
878     - new S/R diagnostics_fill (replace fill_diagnostics):
879       look through the short list of active diag. (instead of the long list)
880       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
881    
882    checkpoint57a_post
883    o this set of changes restores TAMC compatibility
884      tested for global_ocean.90x40x15 adjoint on trough
885      (what a pain)
886    
887    checkpoint57a_pre
888    o some modifs in tools/build_options for sunos
889    o call ctrl_pack for ctrl at end for optimcycle=0
890    
891    checkpoint57
892    o add horizontal bi-harmonic viscosity for vertical velocity
893      - new parameter viscA4W (defaults to viscA4)
894      - affects only non-hydrostatic code
895      - to be done: no-slip lateral boundary conditions
896    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
897    o implement Implicit Vertical advection for pTracers
898    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
899      (implemented also for implicit vertical diffusion & advection)
900    o OBCS: extend application of tracer open boundary conditions
901      to a strip beyond the boundary of width Olx/Oly
902    o add call monitor to TAF set of required calls (flow directives)
903      and include in natl_box_adjoint
904    o untangle a few ifdefs related to cost, ctrl, autodiff
905      untangel a few ALLOW_ECCO_OPTIMIZATION
906    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
907      (theta2, salt2 in ecco_cost_weights)
908    
909    checkpoint56c_post
910    o OBCS as control variables
911      - update ctrl_ad_diff.list, obcs_ad_diff.list
912      - remove balance of obcs controls from default
913      - fix index bug nobcs in ctrl_init
914      - fix dummy fields filen in ctrl_pack
915      - add dummy weights for obcs
916    o lsopt: comment out fort.94 output
917    o optim:
918      - remove unnecessary header files
919      - adjusted namelists
920      - add xerbla.F to Makefile
921    o exf:
922      - multiple modifications of exf_check_range
923      - unit change in exf_init_runoff from [m/year] to [m/s]
924    o mdsio:
925      - i/o-vector change debugLevel from debLevA to debLevB
926    
927    checkpoint56b_post
928    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
929      is called from DO_THE_MODEL_IO
930      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
931      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
932      - clean up PTRACERS_WRITE_TIMEAVE a little
933    o add another verification experiment that tests both the cfc-pkg and
934      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
935      reactive tendencies treated inline with regular timestepping
936    o testreport previously did a lousy job of comparing small numbers, so
937      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
938      implemented in the little c-progam tmp_cmpnum.c which is embedded in
939      testreport.
940    o ptracers_monitor: bug fix for MPI
941    
942    checkpoint56a_post
943    o GCHEM: finish reorganizating the package
944      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
945        (introduces another 3D-array for each passive tracer, but only if
946        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
947        gchemTendency is not needed because the timestep is done separately)
948      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
949      - GCHEM is now---more or less cleanly---separate from PTRACERS
950      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
951        so clear to me how that should be done in a general way.
952    o CFC: improve formatting of output in CFC_ATMOS
953    o PTRACERS:
954      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
955        that ALL experiments with ptracers enable can be checked. This makes
956        GCHEM_MONITOR obsolete.
957      - include a runtime parameter PTRACERS_monitorFreq that defaults to
958        monitorFreq
959      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
960    o add PTRACERS (PTR0[1-5]) to testreport output
961    o exf_check_range:
962      * default changed to .TRUE.
963      * will check values for niter0 if debLevA, every timestep if debLevB
964      * STOP in exf_check_range if 'out of range'
965      * range chosen generous to allow for potential extema
966      TBD: a version with stricter range
967           permitted range would be runtime parameters
968    o GMredi:
969      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
970      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
971      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
972    o GCHEM:
973      - move call to GCHEM_FORCING_SEP, so that it is now called before
974        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
975      - introduced a useGCHEM runtime flag and applied it everywhere.
976      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
977        this flag is now only visible within GCHEM-pkg routines.
978      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
979        be replaced by a 3D array that is computed before thermodynamics; for
980        this, the tracer ID iTracer had to be included into the parameter list
981        of ptracers_forcing
982      - set up forward_step to call gchem_forcing, that will replace
983        gchem_forcing_int in ptracers_forcing
984      - cleaning up
985    o small cleaning of exch2: remove files that are also in eesupp/src
986    
987    checkpoint56
988    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
989    o mnc: cleanup "full" files--fixes out-of-memory problem
990    o ECCO-GODAE
991      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
992      * fully merged and updated from SIO code
993        windstress sign change affects
994        - exf_inscal_[u/v]stress
995        - sign of xx_tau[u/v] adjustments
996        - signs in cost_scat
997      * ctrl_get_gen: avoid update of tau[u/v] for first few days
998      * natl_box_adjoint updated and compressed
999      * 2-level checkpoint switch added
1000        (tested in EXP. 1 of natl_box_adjoint)
1001      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1002    o SVD
1003      * first complete, non-hacked version for SVD calculations
1004      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1005        performed via direct access files admtlm_vector.it????
1006        (via ctrl_[un]pack)
1007      * optimcycle is used for ARPACK iteration counter
1008        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1009      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1010        and add linear transforms where necessary
1011      * controls are initial/final SST, SSS (can be extended; need to check
1012        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1013    o mdsio: filename info to both stderr, stdout
1014    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1015      from sign change
1016    
1017    checkpoint55j_post
1018    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1019      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1020    o add consistent build directories and .cvsignore files to verification
1021    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1022    o make all subroutines 30 or less characters in length for certain older
1023      compilers to work (a thorough search only turns up two routines in
1024      pkg/ptracers)
1025    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1026      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1027    
1028    checkpoint55i_post
1029    o change arrays for total vertical diffusivity (2.D if explicit,
1030      3.D if implicit) ; each ptracer uses its own background value.
1031    o added mnc/NetCDF output capability to ocn_compon_interf
1032      - added bits to verification/cpl_aim+ocn so that it can run on
1033        ITRDA and other clusters without the mpirun "-wd" option
1034    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1035      configuration
1036    o give MNC the ability to create additional files rather than
1037      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1038      - the default is just less than 2GB which is a practical limit
1039        on many systems
1040    o Compute the non-local term using either KPP vertical diffusivity (=default)
1041       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1042    
1043    checkpoint55h_post
1044    o add verification test "vermix"
1045    o remove all the *_ioinc flags and replace with the single global
1046      outputTypesInclusive flag
1047    o allow to set a vertical profile of vertical diffusivity for T & S
1048    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1049    o useMNC moved from data.mnc to data.pkg
1050    
1051    checkpoint55g_post
1052    o Renaming carbon AD experiments to comply with testreport conventions
1053    o Updating adjoint of Held-Suarez hs94.1x64x5
1054    o Fixing directives for non-ECCO forward_step, after ECCO directives
1055      have been fixed to avoid recomp. of do_oceanic_phys
1056      Works well for global_ocean.90x40x15,
1057      but recomp. issue remains for carbon
1058    o Updating adjoint output for natl_box_adjoint after
1059      pkg/ecco has been modified (see taga c55d_post)
1060    
1061    checkpoint55f_post
1062    o rename to timeave_init_fixed
1063    
1064    checkpoint55e_post
1065    o some delicate re-shuffle of store directives to avoid one
1066      extra call of do_oceanic_physics
1067      affects ecco_the_main_loop.F, do_oceanic_physics.F
1068      checkpoint_lev1_directives.h
1069    o NB: this may break global_ocean adjoint temporarily,
1070      but it is clear how to fix it. Will do later, need this now.
1071    
1072    checkpoint55d_post
1073    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1074    o ecco_cost_weights is modified to 1x1 runs
1075    o modifs to allow observations to be read in as
1076      single file or yearly files
1077    o enable to read exf forcing fields as either
1078      single file or yearly files (flag useExfYearlyFields)
1079    checkpoint55d_pre
1080    
1081    o switch between 2-level and 3-level checkpointing
1082    o add ability of MNC to write local and "partial" (eg. 2D slices where
1083      the full 3D field is never actually stored) arrays to NetCDF files
1084      with the correct (that is, the complete multi-dimensional) set of
1085      array indicies
1086      - used in mom_vecinv() to write the diagFreq output
1087      - tested (demonstrated) in verification/aim.5l_cs
1088    o further mnc-ification
1089      - add verification/lab_sea to the list with mnc setups
1090      - fix undefined mnc v-names in cd_code
1091      - add kpp to mnc output (both snapshot and timeave)
1092    o non-hydrostatic code
1093      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1094        in calc_gw.F
1095      - defaults to viscAh
1096      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1097        friction or Leith) in non-hydrostatic mode, as long as there is
1098        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1099    o pkg/cost
1100      extend simple cost functions to treat time mean quantities
1101      (T,U,V) via cost_accumulate_state from cost_tile
1102    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1103        be 2 times larger than the minimum size the advection scheme requires.
1104        now get a perfect conservation of salt in advect_cs test-exp (updated)
1105    o GGL90 (Gaspar's TKE mixed layer)
1106      - add horizontal diffusion of TKE, requires exchanges in
1107        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1108        default. In OPA there is no horizontal diffusion of TKE but the
1109        mixing coefficients are computed from a horizontal average of TKE of
1110        6 points or so. I think that diffusion has a little more physical
1111        justification.
1112      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1113        was in vain)
1114      - mask tke-variable in ggl90_init
1115    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1116    o fix biharmonic diffusion on CS-grid.
1117    o more obcs stuff
1118      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1119        for reading boundary values. This routine is called from
1120        obcs_prescribe_read
1121      - updated obcs_check
1122      - changed sponge layer relaxation parameter units for days to seconds
1123      - turned off sponge layer by default
1124      - changed argument list of OBCS_CALC to myTime+deltaTclock
1125      - fixed about 35 bugs in obcs_external_fields_load
1126    
1127    checkpoint55c_post
1128    o obcs stuff
1129      - new runtime flags useOBCSprescribe, useOBCSbalance
1130      - re-arranged obcs_calc
1131      - moved exf_getobcs to obcs_prescibe_read
1132        obcs_prescibe_read is called after ORLANSKI stuff
1133        and independent of it (executable can contain all).
1134      - updated obcs_check
1135      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1136        These may be necessary only if tangential velocities are
1137        prescribed at OB, not sure, needs testing.
1138    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1139      which simplifies the calls and passes the ifc check-bounds test
1140    
1141    checkpoint55b_post
1142    o add a 2D scalar, Z location, exchange_2 routine.
1143    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1144      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1145      affects advect_cs results (for the wrong reason): update output.txt
1146    o use a more standard discretization for biharmonic viscosity ;
1147     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1148      affects results of dome set-up: update output.txt
1149    o fix gad_advection.F (CubedSphere part), back to version 1.23
1150    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1151    
1152    checkpoint55a_post
1153    o merged code to
1154      * prescribe/read time-dependent open boundaries
1155        (works in conjunction with exf, cal)
1156      * sponge layer code for open boundaries
1157      * each boundary N/S/E/W now has its own CPP option
1158        (healthy for the adjoint)
1159    
1160    checkpoint55
1161    o up-to-date adjoint of previous breaks
1162      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1163      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1164      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1165      - carbon: * remove tr1-related adjoint verification
1166                * add ptracer as control variable
1167    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1168      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1169    
1170    checkpoint54f_post
1171    o in verification/carbin/ remove experiment related to
1172      ALLOW_PASSIVE_TRACER (array tr1 etc)
1173      code_ad/ input_ad/ results_ad
1174    
1175    o add two new packages
1176      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1177        + subject to optimization (memory)
1178      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1179        + subject to reordering (many GOTOs in the original code)
1180        + so far opps is called for every (i,j) point, and then operates in
1181          the vertical; one may want to reorder the scheme in order operate in
1182          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1183          fields)
1184    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1185      - all verification tests compile and run with linux_ia32_g77
1186      - defaults are compatible with current input files--nothing
1187        should change if you were not previously using MNC
1188      - MNC output has been added in numerous places (eg. timeave)
1189        but there are still a few writes not yet do-able with MNC
1190        (this is in progress)
1191      - flags now allow for either/or/both use of MDSIO and MNC and
1192        documentation will soon follow
1193      - numerous small formatting cleanups for ProTeX
1194    o add version info (via BUILD_INFO.h) to MNC and stdout
1195    
1196    checkpoint54e_post
1197    o add two new packages
1198      - pp81 (Packanowski and Philander, 1981), Richardson number and
1199        stratification dependent mixing
1200      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1201      - these scheme operate in a similar manner as KPP (without ghat, of
1202        course), however there is only one diffusivity that is used for both
1203        temperature and salinity (and passive tracers)ç
1204    o add offline package
1205    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1206      provided by Stephanie Dutkiewicz
1207    o genmake2: add ability to search for C compilers and cleanup test output
1208      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1209    
1210    checkpoint54d_post
1211    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1212    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1213      leading to additional shift by 5 days each year of integration
1214       (i.e. leading to considerable offset over the years)
1215    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1216    o start with no AB and no initial filtering (staggerTimeStep):
1217      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1218    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1219      (external loading & cpl import/export stay in forward_step.F)
1220    o update coupling interface to work with new staggerTimeStep
1221    o change MDSIO ptracers_pickup.
1222    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1223    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1224    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1225    
1226    checkpoint54c_post
1227    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1228      this affects (truncation error) output.txt of test-exp:
1229       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1230    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1231    o change Qnet to always be the net heat flux, (+upward).
1232      affects (truncation error) output of natl_box exp.: updated
1233    o define the max number of passive tracers in PTRACERS_SIZE.h
1234    o start to test mnc routinely in exp0
1235    o add sea-ice loading (sIceLoad) as a new forcing field.
1236    
1237    checkpoint54b_post
1238    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1239       impressive on Altix and Opteron systems)
1240    o diagnostics can now write NetCDF files through the mnc package
1241    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1242    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1243    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1244      affects (truncation error) output of lab_sea & natl_box exp.: updated
1245    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1246    
1247    checkpoint54a_post
1248    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1249    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1250    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1251    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1252      + internal_wave (shift in writing cg2d_ini_res)
1253    checkpoint54a_pre
1254    
1255    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1256      - modified verification/lab_sea and natl_box_adjoint accordingly
1257    
1258    checkpoint54
1259    checkpoint53g_post
1260    o prepare splitting of thermodynamics: store convect.counter in common block
1261    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1262      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1263    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1264    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1265    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1266    o restore adjointability
1267    
1268    checkpoint53f_post
1269    o modifications that affect AIM experiment results (update output.txt):
1270      - no advection of S at top interface Nr (pkg/generic_advdiff)
1271      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1272    o AIM pkg:
1273      - include stability function into surf.Flux derivative relative to Tsurf
1274      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1275    
1276    checkpoint53e_post
1277    o merged cylindrical coord configuration
1278    o added rotating_tank experiment
1279    checkpoint53e_pre
1280    
1281    checkpoint53d_post
1282    o faulks upgraded: re-generate output.txt that have changed:
1283       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1284    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1285    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1286    o added Sadourny discretization of Coriolis
1287      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1288      - re-enabled use of omega3 (useAbsVorticity)
1289    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1290      vector-invariant equations
1291      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1292    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1293      hopefully without new bugs
1294      - still to do: biharmonic friction for non-hydrostatic w
1295    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1296    o regenerated output for global_ocean_ebm (using -ieee)
1297    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1298      of mom_common/
1299      - simple re-arrangement of instructions within computing loop
1300    checkpoint53d_pre
1301    
1302    checkpoint53c_post
1303    o new version of coupler for AIM+thSIce and Ocean models
1304     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1305     - land: change Evaporation of snow
1306     - aim with thSIce: fix bug in snow-precip.
1307    o changes to calc_gw.F
1308     - bug fix for w^2 term near the bottom boundary
1309     - (hopefully) improve the lateral slip boundary condtions for use with
1310        partial/looped cells
1311      - because the bug fix changes two verification experiments anyway (exp5
1312        and plume on slope), change the lateral boundary condition from half slip
1313        to the value of no_slip_sides
1314    o ebm package wasnt quite up to the parallel task. Fixed that.
1315    o Adjoint of EBM package + verification
1316      * TLM OK
1317      * ADM not sufficient accuracy yet (needs further testing)
1318    
1319    checkpoint53b_post
1320    o Commiting new energy balance model to repository
1321      * package is pkg/ebm
1322      * verif. is verification/global_ocean_ebm
1323      * references are in ebm_driver.F
1324    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1325    C        Global thermohaline circulation. Part I:
1326    C        Sensitivity to atmospheric moisture transport.
1327    C        J. Climate 12(1), 71-82
1328    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1329    C        Global thermohaline circulation. Part II:
1330    C        Sensitivity with interactive transport.
1331    C        J. Climate 12(1), 83-91
1332    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1333    C        Destabilization of the thermohaline circulation
1334    C        by atmospheric eddy transports.
1335    C        J. Climate 7(12), 1870-1882
1336    o Will need long integration testing.
1337    checkpoint53b_pre
1338    
1339    o created pkg/mom_common in preparation for variable viscosity code
1340    o renamed and split ini_mnc_io
1341    o pkg/land: only liquid water can diffuse or run-off
1342    o AIM using land: soil wetness availability account for snow
1343    o added printMapIncludesZeros to EEPARMS namelist
1344    
1345    checkpoint53a_post
1346    o restore TAMC compatiility for exf_constants.h
1347      (no usage of _d in .h)
1348    o Additional storing in KPP in an attempt to fix
1349      TAMC problem with adjoint of KPP code.
1350      (no success...)
1351      Identical code works fine with TAF.
1352    o Fixed verification/natl_box_adjoint experiments.
1353      Initial conditions for Experiments 4 and 5 are now
1354      set to "SEAICE_initialHEFF=0", which is more reasonable,
1355      and hence gives results closer to that of Experiment 2.
1356      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1357    
1358    checkpoint53
1359    o stable checkpoint with up to date adjoint
1360      TLM tests only run for 1st grdchk at the moment. Its unclear if
1361      this is a code problem or a problem with resetting code for g_
1362      variables that is being autogenerated wrong.
1363      Otherwise:
1364       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1365       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1366         are both still in chaos following their security messes.
1367    
1368    checkpoint52n_post
1369    o various build (mostly genmake2) changes including:
1370      - ability to build/run more easily within Cygwin and MacOS X
1371      - more complicated Makefiles with a stronger dependence on Gnu Make
1372    o pkg/seaice modifications
1373      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1374        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1375        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1376      - changed proxy for geostrophic velocity and updated
1377        verification/lab_sea/results/* accordingly
1378      - removed ADI dynamic solver from pkg/seaice
1379      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1380        they caused a segmentation fault under certain circumstances
1381      - removed unused field WATR
1382    o bug fix in exf-package:
1383      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1384         now reflect that.
1385    o small fixes in the cal-package:
1386      - set reference date to first of January for the 'model'-calendar
1387      - failing of cal_CheckDate in cal_FullDate now actually results in a
1388        warning
1389    o small modifications in exf-package to increase flexibility:
1390      - change climtempfreeze from a constant to a runtime parameter that
1391        is specified in data.exf_clim (default = -1.9)
1392      - introduce runtime parameter windstressmax (default = 2.0) that is
1393        specified in data.exf
1394    o fix in pkg/thsice:
1395      - update Evap (Tsf changes) to be consistent with Latent heat flux
1396      - maintain snow precipitation unchanged (even if Tsf >=0).
1397     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1398    
1399    checkpoint52m_post
1400    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1401      this does not change any of the results, because myIter=0 in swfrac always
1402      lead to jwtype=2 (the default anyway), but the call makes little sense
1403      as a default
1404    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1405    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1406      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1407    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1408    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1409    o extending useSingleCpuIO option to work with new exch2 I/O format
1410      - old-style, missing-tile I/O is still accessible by defining CPP
1411        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1412    o monitor package can write to NetCDF files and/or STDOUT
1413    o fix re-definition bug in MNC_GRID_INIT_ALL()
1414    o doc/api_reference added
1415      - a framework for building an API Reference Manual using all
1416        the "protex" comments embedded in the code
1417      - see pkg/generic_advdiff, pkg/mnc for examples
1418    o MNC:
1419      - make myThid the last argument for all subroutines
1420      - new default for the grid files: NO halos
1421      - add useMNC and other run-time flags
1422      - separate per-file-group handling of the unlimited dimension
1423      - early initialization of MNC w/ flags read at the eeboot stage
1424        and lookup tables set in initialize_fixed
1425      - write all MNC output to a freshly-created directory
1426    o thermodynamics sea-ice (thsice) is now tested with testreport.
1427    o test exp. advect_cs: use the standard cs32 grid ; update output.
1428    o Added functionality to grdchk:
1429      pick global i,j,k position (or nearest wet) where to perform check.
1430    
1431    checkpoint52l_post
1432    o new land formulation:
1433      a) use ground enthalpy as prognostic variable to ensure exact
1434         energy conservation.
1435      b) account for water temperature and for latent heat of freezing
1436         in all processes (rain, run-off, ground storage)
1437      c) compute surface and ground temperature implicitly.
1438    o aim_v23 modification for new land model:
1439      a) Treat separately land / ocean / sea-ice surface fluxes
1440         to allow implicit computation of land & sea-ice surface temp.
1441      b) add snow precipitation.
1442    checkpoint52l_pre
1443    
1444    o fix problem (when 1 tile is empty) in min/max monitor.
1445    o fix bug in timeAve (u,vZetatave in common block)
1446    o no restoring terms under ice for pkg/seaice
1447    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1448    o bug fix for pkg/seaice pickups
1449    o change MNC call locations and add coordinate attributes
1450    o mask vorticity at the corner ; affects global_ocean.cs output
1451    o fix ini_curvilinear_grid ; test CS experiments with mpi
1452    o aim.5l_cs: modify sea-ice fraction input file ; update output
1453    o exf: Adding simple range check routine for exf fields after read
1454    
1455    checkpoint52k_post
1456    o removed top-level directory "diags"
1457      - we migrated these functions to pkg/timeave a long time ago
1458    o fixed bug introduced in pkg/monitor
1459    o accuracy ctrlprec = 32 insuffient for gradient checks using
1460      averaged fields (I/O via cost_averages)
1461      -> use ctrl.h in active_file*.F to control I/O precision.
1462    o paramter list of CALL ADTHE_MAIN_LOOP
1463    o added initial do_the_model_io to ecco
1464    o set all ...Freq to zero after cost_final
1465      taveFreq, dumpFreq, pChkptFreq
1466    o MAIN and ECCO differentiability restored
1467    
1468    checkpoint52j_post
1469    o fix nchklev in tamc.h for global_ocean...
1470    o Bringing flow and store directives up-to-date
1471    o Really weird thing!
1472      call do_the_model_io from the_main_loop with parameters
1473      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1474      TAF places a faulty re-call of initialise_varia
1475      after cost_final call which should not be there!
1476    checkpoint52j_pre
1477    
1478    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1479      error messages
1480    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1481    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1482      debug output
1483    o modfied mdsio_writefield.F to handle non-global files under exch2
1484    o update AIM Cubed-Sphere exp (aim.5l_cs):
1485      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1486    o update AIM Equatorial Channel exp:
1487      use standard aim_v23 pkg and change the SST fields to be more realistic.
1488    o globalFile now works with exch2
1489    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1490      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1491    o limit timeave output for hi-res integrations
1492    
1493    checkpoint52i_post
1494    o removed CPP_EEOPTIONS.h from verification/*/code
1495    o updated the tiling for global_ocean_pressure
1496    checkpoint52i_pre
1497    
1498    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1499      the old pkg/aim).
1500    
1501    checkpoint52h_pre
1502    o shortened offending lines in exch2_send_rx?.template
1503    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1504    o genmake2: add build & execute test for NetCDF code
1505    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1506      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1507    o added useSingleCPUIO flag to monitor.F and mon_out.F
1508    o added temporary hack for sea-ice dynamics on the cube:
1509      metric terms are ignored and it is assumed that
1510      there is no sea-ice on cube faces 1, 2, 4, and 5.
1511    
1512    checkpoint52f_post
1513    o added exch2 cube routines to pkg/exch2
1514    o modified hs94.cs-32x32x5 to use it
1515    o added new grid files to hs94.cs-32x32x5
1516    checkpoint52f_pre
1517    
1518    checkpoint52e_post
1519    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1520      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1521    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1522      to work with implicit vertical advection and AB ;
1523    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1524    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1525     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1526    checkpoint52e_pre
1527    
1528    o fix bug in impldiff when Nr=1 or Nr=2.
1529    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1530    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1531    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1532      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1533    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1534    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1535    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1536    
1537    checkpoint52d_post
1538    o re-tiled many expts to allow comparison in multi-processor mode
1539      - updated output accordingly
1540      - changed hs94.128x64x5 to use intial T from file rather than use the
1541        random number generator
1542    o add infrastructure in model routines for fizhi and gridalt packages
1543    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1544    o changes to permit hi-res, cubed-sphere, configuration
1545      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1546      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1547      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1548        of surface winds for the cube
1549      (A verification experiment, based on global_ocean.cs32x15, but with
1550       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1551       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1552       complete with example surface forcing files and matlab scripts to look
1553       at the output and compare it with that of global_ocean.cs32x15.)
1554    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1555       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1556       to conform to the common rule.
1557    o check-in the first version of the coupler + interfaces for multi-components
1558       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1559       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1560       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1561       - ocean and atmos. share the same horizontal grid (no interpolation).
1562       - exchanges between component and coupler is done in forward_step
1563    o new verification experiment, cpl_aim+ocn:
1564       coupled ocean - AIM atmosphere on cs32 grid.
1565    
1566    checkpoint52d_pre
1567    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1568    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1569    
1570    checkpoint52c_post
1571    o Fixing OPTIONS files for use of exf:
1572      - ALLOW_ECCO not needed
1573      - ECCO_CPPOPTIONS.h should not be included from
1574        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1575        as has been the case in the past
1576      - All cal/exf related options are currently set in
1577        single header file. Should remain so until we
1578        agree on a consistent new policy.
1579    o Removed all CPP options for cal package.
1580      cal has no more CPP options.
1581    o modified STOREs in GAD_ADVECTION
1582    o corrected key comp. for passkey
1583    
1584    checkpoint52b_post
1585    o new version: "thsice" of thermodynamic sea-ice pkg:
1586     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1587     - modify fluxes but do not change theta directly;
1588     - light cleaning of bulk_force pkg (still needed with thsice).
1589     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1590       + output_thsice.txt to test thsice & bulk_force pkgs.
1591    o put back grid & coriolis monitor output.
1592    checkpoint52b_pre
1593    
1594    o call "do_the_model_io" at the beginning (=> dump initial state)
1595    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1596    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1597      (need info on NUMBER_OF_PTRACERS)
1598    o missing PTRACERS headers in some routines
1599    o default tamc.h in pkg/autodiff supposed to crash
1600      to ensure proper customization
1601    
1602    checkpoint52a_post
1603    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1604      - moved surfaceTendencyTice from pkg/seaice to main code
1605      - subroutine FREEZE_SURFACE now limits only surface temperature
1606        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1607        => new output.txt for global_ocean.cs32x15 & global_with_exf
1608      - keep the old version of FREEZE for backward compatibility;
1609        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1610      - corresponding modifs for TAF directives
1611    o added surface flux output variables to TIMEAVE_STATVARS
1612    o time-averaged output for pkg/ptracers
1613    o fix problem with ECCO-related divided adjoint
1614      snapshot file was missing some ad-variables,
1615      but no warning issued by TAF
1616    
1617    checkpoint52a_pre
1618    o some bug fixes for #undef REAL4_IS_SLOW
1619    
1620    checkpoint52 = ecco_c52_e35
1621    o after testing adjoints of checkpoint51u_post
1622    
1623    checkpoint51u_post
1624    o this is the post-merge tag of the ecco-branch
1625      (needs another clean checkout and re-testing)
1626    o various natl_box_adjoint configs and results
1627      but no input fields
1628    o obcs adjoint not yet merged!
1629    o adding ECCO global 1x1 and 2x2 degree configs
1630    o updated/extended some store directives for seaice
1631    o pkg/ecco now containes ecco-specific part of cost function
1632    o top level routines the_main_loop, forward_step
1633      supersede those in model/src/
1634      previous input data.cost now in data.ecco
1635      (new namelist ecco_cost_nml)
1636    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1637    
1638    checkpoint51t_post
1639    o this is the pre-merge tag of the ecco-branch
1640    
1641    checkpoint51s_post
1642    o cleanup: removed various obsolete #define-s
1643    o pkg/grdchk
1644      - renamed 'ph-grd 3' to 'grad-res'
1645      - merged from ecco-branch
1646        (remaining bug fixes for obcs gradient checks)
1647      - additional high-precision output for testreport
1648        (grep for 'precision_grdchk_result')
1649    
1650    checkpoint51r_post
1651    o cleaned up or removed CPP_OPTIONS.h files
1652    o updated results for some of the tests to reflect the new
1653      optfiles (-ieee: -O0 instead of -O3)
1654    
1655    checkpoint51q_post
1656    o cd_code:
1657      - moved cd_scheme.F -> cd_code_scheme.F
1658      - separate read_checkpoint from cd_code_ini_vars.F
1659      - separated cd_code part from write_checkpoint
1660      - updated AD_SOURCE, generated .flow
1661      - added CD_CODE_VARS.h to the_main_loop
1662      - Moving cd_code specific store dir.s to pkg/cd_code
1663    o ctrl package totally restructured
1664      - pack/unpack now optional and decoupled from
1665        xx_/adxx_ I/O
1666      - ctrl_pack/unpack cleaned
1667        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1668      - confined inclusion of AD_CONFIG.h to where necessary.
1669    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1670    
1671    checkpoint51p_post
1672    o create initial cd_code package
1673      - WARNING: the initialization of fields within packages
1674        is broken because INI_FIELDS (where READ_CHECKPOINT is
1675        called) is called *before* PACKAGES_INIT_VARIABLES.
1676        This seems to be backwards since
1677        1) its important to initially zero the entire field including
1678           the "halo" region
1679        2) zeroing needs to be done *before* reading pickup info
1680           and the pickup call might or might not happen in any
1681           particular run
1682      - this needs an overhaul for R2
1683    o cleanup verification/*/code/GMREDI_OPTIONS.h
1684    o cleanup testreport
1685    
1686    checkpoint51o_post
1687    o bringing AD-related verif's up to date with genmake2
1688      - carbon/
1689      - global_ocean.90x40x15/
1690      - hs.94.1x64x5/
1691      - (front_relax/ )
1692    o (more) consistent directory structure for AD-related verif.'s
1693    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1694    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1695    o bug fix in find_alpha.F for MDJWF:
1696      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1697        change rho -> rho-rhoConst
1698      - replace call find_rho to find_rhonum
1699    o initialisation of rFlx extended to full array (required by TAF)
1700      and shifted to thermodynamics
1701    o removed PTRACERS.h in ptracers routine
1702    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1703    o Correcting initialisations for fVerU, fVerV.
1704    o helping TAF to recognize dependency on kUp for
1705      fVerU, fVerV
1706    o Replacing delZ by delR in pkg/ctrl/
1707    checkpoint51o_pre
1708    
1709    o undid all of cp51 pending some cleanups and discussion
1710    o added the [#include "AD_CONFIG.h"] statement to all files that need
1711       it for adjoint/tl #defines
1712     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1713     o removed tools/genmake since it no longer works
1714    
1715    checkpoint51n_post
1716    o modifications to make FREEZE flux visible to pkg/kpp
1717      - moved surfaceTendencyTice from pkg/seaice to main code
1718      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1719      - subroutine FREEZE now limits only surface temperature
1720        (this means new output.txt for global_ocean.90x40x15,
1721         global_ocean.cs32x15, and global_with_exf)
1722    o added surface flux output variables to TIMEAVE_STATVARS
1723    
1724    checkpoint51n_pre
1725    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1726    o added [#include "AD_CONFIG.h"] to all files that use the following
1727      defines:
1728      - ALLOW_ADJOINT_RUN
1729      - ALLOW_TANGENTLINEAR_RUN
1730      - ALLOW_ECCO_OPTIMIZATION
1731    
1732    checkpoint51m_post
1733    o incorporating changes to get TAMC/TAF working in genmake2
1734      - added new TAMC/TAF targets to the Makefile
1735      - various cleanups related to package handling
1736      - these changes should have no impact on the forward model
1737    
1738    checkpoint51l_post
1739    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1740     - faster algorithm for cal_addtime.F
1741     - higher precision arithmetic, where needed
1742     - pkg/exf *startdate variables changed from calendar date to
1743       model integration time
1744    
1745    checkpoint51l_pre
1746    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1747    o enable to apply restoring on S & T only in a latitude band.
1748    o update output (external_forcing_surf modif. change truncation errors)
1749       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1750    
1751    checkpoint51k_post
1752    o change default to: useNHMTerms=.FALSE.
1753     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1754       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1755     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1756        exp1, ideal_2D_oce
1757     - change data file of oceanic exp (leave the results unchanged for now)
1758       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1759    o set gravitySign automatically according to the vertical coordinate used
1760      (and change sign: back to "logical" value: +1 when R increases downward)
1761    o added an include barrier to the default CPP_OPTIONS.h and
1762      removed the #include "PACKAGES_CONFIG.h" from it
1763    o fix a bug in mom_fluxform (from chk51j_post)
1764    
1765    checkpoint51j_post
1766    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1767    o adjusted some flow directives (dynamics, thermodynamics)
1768    o added cubed-sphere case to test cost function
1769    o heckpoint_lev?_directives.h now include
1770      pkg-specific directives, whenever those are enabled.
1771    o Moving pkg-specific flow directives to corresponding pkg
1772      Moving pkg-specific differentiation list to corresponding pkg
1773      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1774      ---> conventions are
1775           - pkg_ad.flow
1776           - pkg_ad_diff.list
1777           - pkg_ad_check_lev?_dir.h
1778    
1779    checkpoint51i_post
1780    o merge of the branch-genmake2
1781      - knowingly breaks the older genmake
1782      - automatic generation of all ALLOW_${PKG_NAME} defines
1783      - new testreport supersedes older testscript
1784    o large number of package inclusion and header cleanups
1785    checkpoint51i_pre
1786    
1787    o new output for adjoin of global ocean vector invariant
1788    o fix for checkpoint of thermodynamic seaice and bulk_force
1789    o Steph gchem various cleanups
1790    
1791    checkpoint 51h_pre
1792    o fixed some single quotes
1793    o modify gchem pkg to be more versatile
1794    o modifications to clean up dic pkg
1795    o add pkg/cfc
1796    
1797    checkpoint51g_post
1798    o provide links for ARPACK and ADM*TLM
1799    o start removing verification/vero/
1800    o update AD-related stuff
1801      (in particular some IF-statements in model/src/ routines)
1802    o adding to verification/global_ocean.90x40x15/ adjoint of
1803      vector invariant setup
1804    
1805    checkpoint51f_post
1806    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1807    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1808      of tracer Green's fucntions for ocean inversion project.
1809    
1810    checkpoint51f_pre
1811    o Added on-the-fly spatial interpolation capability
1812        "USE_EXF_INTERPOLATION" to pkg/exf.
1813      - This is a temporary Cartesian-grid hack until
1814        the super-duper ESMF coupler becomes available.
1815      - See verification/global_with_exf/README for usage example.
1816      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1817        flags and modified pkg/seaice accordingly.
1818    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1819        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1820        non-local transport term.
1821    
1822    checkpoint51e_post
1823    o pkg/mom_vecinv:
1824      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1825      - add time-ave diagnostic of vorticity advection.
1826    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1827    o atmospheric geopotential: - include water vapor effect;
1828                                - use p^kappa in p* scaling.
1829    o land pkg: read initial state from files.
1830    o AIM : add stratospheric drag in the upper level
1831    
1832    checkpoint51d_post
1833    o change function ILNBLNK (=> last non-blank char.) to return zero
1834      (instead of the string length) when the string. char is empty
1835    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1836    o modif's to restore TAMC compatibility
1837      - avoid "_d" constructs in PARAMETER declarations
1838      - avoid interrupting lines by comment lines
1839    o Use cluster local disks for purely local I/O
1840      vs. globally visible disks needed for ctrl stuff
1841      (merged from ecco-branch)
1842      - new active_file_loc... and mdsio_..._loc routines
1843      - affected packages: autodiff, ctrl, grdchk, mdsio
1844    
1845    checkpoint51c_post
1846    o introducing integer flag debugLevel
1847      - debLevZero: suppress all output
1848      - debLevA: standard
1849      - debLevB: equivalent to current debugMode=.TRUE.
1850    o introducing pathname variable mdsioLocalDir for mdsio
1851      that can be specified at runtime
1852      (relevant for cluster I/O to local disk)
1853    `
1854    >>>checkpoint51b_post
1855    adjoint of ptracers
1856    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1857    o extended state in checkpoint_lev?, etc.
1858    o alternative ctrl/cost with tr1 or ptracer
1859    o new comlev1_bibj_ptracers
1860    o new ptracers.flow
1861    o made ptracers_forcing same as external_forcing_s
1862    o added verification for adjoint with ptracers
1863      - adm. grdchk fail so far
1864      - tlm. grdchk OK
1865      - checked tapelev/comlev recomputations: OK
1866    <<<checkpoint51b_pre
1867    
1868    checkpoint51a_post
1869    o added code for biogeochemistry package
1870      - new pkgs: dic, gchem
1871      - new subroutine in ptracers
1872    o modify code for biogeo packages
1873      - in model/src and pkg/ptracers
1874    
1875    checkpoint51
1876    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1877      - autodiff, ctrl, exf, grdchk, seaice
1878      kept separate packages
1879      - cost, ecco, obcs
1880    o updating verification/internal_wave, verification/lab_sea
1881      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1882    
1883    checkpoint50i_post
1884    o Preparing next differentiable checkpoint and sync
1885      of MAIN vs. ecco-branch
1886      - 1st step: this one is differentiable
1887      - 2nd step: next(! not this) checkpoint will have updated packages
1888                  from ecco-branch)
1889    
1890    checkpoint50h_post
1891    o new package "land": provide surface BC for AIM.
1892    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1893    o AIM: use true log-P extrapolation for near surface temp (= as in
1894        F.Molteni paper) ; update aim.5l_cs output.
1895    o New variable in PARM03 for more flexible pickups
1896    o somewhat cleaned package initialisation sequence for
1897      ctrl/ cost/ ecco/ in packages_... routines
1898    
1899    checkpoint50g_post
1900    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1901      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1902      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1903        made the default because of faster convergence than ADI
1904    
1905    checkpoint50f_post
1906    o exf totally restructured
1907      - replaced all exf_set_ routines by one generic exf_set_gen.F
1908        and made sure it's still differentiable
1909      - split exf_getffields.F into new exf_bulkformulae.F
1910      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1911      - updated adjoint/makefile and relevant verif. accordingly
1912    
1913    checkpoint50f_pre
1914     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1915          + change Evap over land. (update aim.5l_cs output)
1916     o added missing .cvsignores and made uniform across expts
1917     o changed configuration of tidal_basin_2d expt
1918     o added pkg/debug functions for tracing code in fatal crashes
1919     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1920     o new fn in pkg/monitor to stop model if solution grows too big
1921     o removed lots of single quotes from comments
1922    
1923    checkpoint50e_post
1924    o make KPP work with PTRACERS
1925     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1926       nearly a copy of kpp_transport_s
1927     - there is no analogue to SurfaceTendencyS, so I have to use
1928       gPtr(of the surface layer) instead
1929    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1930    checkpoint50e_pre
1931    
1932    checkpoint50d_post
1933    o change kpp output from multiple-record state files to single-record state
1934      files analogous to write_state.F
1935    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1936      analogous to the cg2d-related output.
1937    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1938      so that writing to internal file fn (with length 512) fails.
1939    checkpoint50d_pre
1940    
1941    checkpoint50c_post
1942    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1943    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1944    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1945    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1946    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1947    
1948    checkpoint50c_pre
1949    Merging from release1_p13:
1950    o bug fix for pkg/seaice dynamic solver
1951    o Added SEAICE_initialHEFF to pkg/seaice
1952    
1953    checkpoint50b_post
1954    o store u*,v* in gU,V instead of in guNm1,gvNm1
1955    o in order to put the momForcing out of the Adams-Bashforth:
1956      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1957      to timestep.F
1958    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1959    o re-generate output for highly sensitive test-exp:
1960       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1961    
1962    checkpoint50b_pre
1963    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1964    o corrected CPP option mismatch in exf_Bulk... functions for case
1965      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1966    
1967    checkpoint50a_post
1968    o Bug fix for merging between c50 and KPP.
1969      ikey was passed from thermodynamics to kpp_calc via
1970      common block rather than being recomputed in kpp_calc,
1971      in contradiction with new key itdkey.
1972      New key ikppkey created, and tamc.h headers updated.
1973    
1974    checkpoint50
1975    - 2nd step of merge with ecco-branch:
1976      merge changes in ecco-branch back into main trunk
1977    - bug fix in find_alpha
1978    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1979    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1980    - merged some sliced AD support routines
1981    
1982    checkpoint49
1983    merged from ecco-branch:
1984    o exf:
1985      - Enable initialisation of forcing fields to constant
1986        (runtime) values.
1987      - in exf_getffields.F
1988        Reduce i-/j-loop to interior domain, discarding overlaps.
1989        That also fixes wrong TAF-key computations for key_1, key_2
1990        with bulf formulae.
1991      - exf_init.F modify #ifdef for exf_init_evap
1992      - exf_getffieldrec.F, ctrl_getrec.F
1993        The following INT-usages are not safe:
1994          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1995          fldcount = int(fldsecs/fldperiod) + 1
1996        and were modified.
1997    o autodiff: checkpoint_lev...
1998      - updated storing for bulk formulae (some arrays were missing)
1999      - added state for seaice package
2000      - synchronized with main branch
2001    o DIVA:
2002      Modif.s in
2003      - the_main_loop.F
2004      - the_model_main.F
2005      and added cost_final_restore.F cost_final_store.F
2006      o With these changes, it is possible to fully separate
2007        the first forward run to compute the cost function (mdthe_main_loop)
2008        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2009        into separate model executions.
2010        This enables better tuning of DIVA to given queue sizes.
2011      o Loss of cost function value in consecutive DIVA runs is
2012        fixed by storing to 'costfinal' file.
2013      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2014        beginning/end of adjoint integration is accounted for.
2015      The current changes apply to TAF-1.4.26.
2016      TAF has one remaining bug, requiring one manual change
2017      (see MITgcm manual).
2018    o cal: synchronized between MAIN and ecco-branch
2019    
2020    checkpoint48i_post
2021    o Changes to restore differentiability of code w.r.t. previous tag
2022      (mostly adding new routines to make list and replacing
2023      pressure by totPhiHyd).
2024    o Updated and merged grdchk package
2025      - has both ADM and TLM checks
2026      - works for single- and multi-proc.
2027      - output cleaned
2028      - worked successfully for parallel DIVA
2029    o genmake:
2030      - Adding -platform=SP4
2031      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2032    o Modif. for DIVA:
2033      ctrl_unpack should not be called in intermediate DIVA interval.
2034      (similar thing would apply for active files such as
2035      tbar, sbar, psbar, which should not be reinitialised;
2036      only relevant for ecco-branch)
2037    
2038    checkpoint48h_post
2039    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2040    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2041    o Added SEAICE_initialHEFF to pkg/seaice
2042    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2043    
2044    checkpoint48g_post
2045    --- EOS:
2046    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2047      store total Potential in totPhyHyd for diagnostics & EOS.
2048    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2049    --- Pressure/geopotential gradient:
2050    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2051    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2052      ( changes results of global_ocean_pressure )
2053    o NLFS + z-coord.: add eta*Rho' contribution.
2054    o accurate phiHyd when using interface-W at the middle between 2 centers
2055     ( changes results of ideal_2D_oce )
2056    o includes r* 2nd term in potential gradient.
2057    
2058    checkpoint48f_post
2059    Merging from release1_p12:
2060    o Modifications for using pkg/exf with pkg/seaice
2061      - improved description of the various forcing configurations
2062      - added basic radiation bulk formulae to pkg/exf
2063      - units/sign fix for evap computation in exf_getffields.F
2064      - updated verification/global_with_exf/results/output.txt
2065    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2066      (SBO) core products, including oceanic mass, center-of-mass,
2067      angular, and bottom pressure (see pkg/sbo/README.sbo).
2068    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2069      to avoid negative values in shallow regions.
2070      - updated verification/natl_box/results/output.txt
2071      - updated verification/lab_sea/results/output.txt
2072    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2073    o Added useSingleCpuIO option (see PARAMS.h).
2074    o Updated useSingleCpuIO option in mdsio_writefield.F to
2075      work with multi-field files, e.g., for single-file pickup.
2076    o pkg/seaice:
2077      - bug fix in growth.F: QNET for no shortwave case
2078      - added HeffFile for specifying initial sea-ice thickness
2079      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2080    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2081      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2082    o pkg/seaice:
2083      - adjoint-friendly modifications
2084      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2085    
2086    checkpoint48e_post
2087    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2088    o dynamics: change definition of computational domain & adapt mom_fluxform
2089      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2090    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2091        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2092        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2093        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2094        inverted_barometer solid-body.cs-32x32x1
2095      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2096    
2097    checkpoint48d_post
2098    o in preparation for r*:
2099     a) use pre-computed gradient of hydrostatic potential:
2100        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2101     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2102        => affects results of glob_oce_pressure (different truncation error)  
2103      update output.txt of ideal_2D_oce & global_ocean_pressure
2104    
2105    checkpoint48d_pre
2106    o in preparation for r*:
2107      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2108      pass the 2 comp. of the grad. as arguments to momentum S/R.
2109      but for the moment, only used if it does not change the results.
2110    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2111    
2112    checkpoint48c_post
2113    Modifications in treatment of initial flux forcing controls
2114    to avoid extra storing of flux fields.
2115    
2116    checkpoint48c_pre
2117    o Added tidal_basin_2d experiment (currently 1D!)
2118    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2119    
2120    checkpoint48b_post
2121    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2122     (modification to pressure gradient not yet implemented)
2123    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2124      (for U & V) that are used for vertical advection of momentum.
2125    
2126    checkpoint48a_post
2127    o In preparation for r*, use temp. array to compute vertical transport
2128       in flux-form momentum pkg. => change results of few test-exp.
2129      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2130                        lab_sea, natl_box & plume_on_slope
2131    
2132    checkpoint48
2133    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2134    
2135    checkpoint47j_post
2136    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2137    o moved adexch from forward_step to addummy_in_stepping
2138    o added exch in ctrl_map_...
2139    o aveFreq.=0. at end of cost_final to avoid overwrite in
2140      reverse checkpointing loop
2141    o Yet more changes in gmredi:
2142      * adgmredi_calc_tensor
2143        avoiding all recomputation of gmredi_slope_limit
2144      * adgmredi_x/y/rtransport
2145        added flag for excessive storing to avoid recomp. of
2146        u/v/rtans, dTdx/y/z
2147        -> this is not really necessary and very memory-consuming
2148      * adgmredi_slope_psi:
2149        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2150      * gmredi_slope_limit
2151        re-activated full calculation of taperfct for case 'ac02'
2152    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2153    
2154    checkpoint47i_post
2155    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2156    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2157      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2158    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2159    o gmredi: fix few bugs.
2160    
2161    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2162    This will be a good checkpoint to plug into the ecco-branch.
2163    o few modif.'s to get latest version adjointed
2164      (mainly kick out code in ini_linear_phisurf)
2165    o modif's to run adjoint with exactConserv
2166    o case GM_BOLUS_ADVEC should be cleaned
2167      S/R gmredi_slope_psi should be cleaned
2168    o verification/carbon now has exactConserv=.TRUE.
2169    
2170    checkpoint47g_post
2171    o time-average AIM output: becomes independent from statvars time-average
2172      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2173    o After TAF bug fix:
2174      Tested adjoint of gmredi package.
2175      Tests were done with checkpoint47 rather than with latest
2176      checkpoint47f_post since the latter is broken for the adjoint
2177      verification/carbon/ contains both ADM and TLM gradient checks.
2178    Here they are, before they get changed/lost/stolen.
2179    Mostly modif.'s to fix numerical sensitivities.
2180    Gradient checks OK for
2181    - GM_taper_scheme:
2182      * clipping
2183      * ac02
2184      * linear
2185      * glw91
2186      * dm95
2187      * ldd97
2188    - GMREDI_OPTIONS:
2189      * GM_VISBECK_VARIABLE_K
2190      * GM_NON_UNITY_DIAGONAL
2191      * GM_EXTRA_DIAGONAL
2192      * GM_BOLUS_ADVEC
2193    in conjunction with data.gmredi parameters to be checked in
2194    in a few minutes under verification/carbon/code/
2195    
2196    checkpoint47f_post
2197    Merging from release1_p10:
2198    o modifications for using pkg/exf with pkg/seaice
2199      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2200        and SEAICE_EXTERNAL_FLUXES
2201      - pkg/exf CPP options EXF_READ_EVAP and
2202        EXF_NO_BULK_COMPUTATIONS
2203      - usage examples are Experiments 8 and 9 in
2204        verification/lab_sea/README
2205      - verification/lab_sea default experiment now uses
2206        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2207    
2208    checkpoint47e_post
2209    o created a tag prior to creating a branch
2210    
2211    checkpoint47d_post
2212    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2213      at the bottom boundary had an erroneous half slip boundary condition
2214    o added bottom drag and no slip boundary condition capabilities to
2215      oceanic pressure coordinates code
2216    o added new verification experiment global_ocean_pressure, this experiment is
2217      also described in the tutorial section of the manual
2218    checkpoint47d_pre
2219    
2220    checkpoint47c_post
2221    o Added a verification experiment for a global cubed-sphere ocean run
2222      -  verification/global_ocean.cubed32x32x30
2223      -  uses pkg/therm_seaice and pkg/bulk_forcing
2224    
2225    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2226    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2227      when using P-coordinate; only implemented for atmospheric config.
2228    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2229      NOTES: requires option NONLIN_FRSURF to be "#define".
2230    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2231    
2232    checkpoint47b_post
2233    Merging from release1_p9:
2234    o pkg/seaice
2235      - removed GOTO's and added taf directives
2236      - double precision constants to reduce the g77 (Linux)
2237        to F77 (SGI) differences reported in release1_p8
2238    o tools/genmake
2239      - added SGI options
2240    o verification/testscript
2241      - updated to that of checkpoint47a_post
2242    o verification/global_ocean.90x40x15/input/eedata
2243      - modified for SGI f77 compatibility
2244    o verification/lab_sea
2245      - added description of sea-ice model
2246      - added missing matlab routines
2247      - added test of thermodynamics parallelization
2248    
2249  checkpoint47a_post  checkpoint47a_post
2250  o new pkg: aim_v23  o new pkg: aim_v23
2251   = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.   = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.

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