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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.704 by gforget, Fri Jul 14 22:34:57 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 consistent with addition of ptracer and ssh in pkg/profiles
8    o profiles: adding ptracer and ssh
9    o testreport: change multi-test output-file name
10      (from output.txt.{name} to output.{name}.txt)
11    o profiles: now ok for mutli-threaded case
12    o seaice: add 4 parameters for different advection schemes for area,
13      (effective) seaice thickness, enthalphy, and snow height. Their default
14      is the standard parameter SEAICEadvScheme
15    o calc_gw:
16     - add cosFacU in zonal viscous flux (harmonic.visc.).
17     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
18       of tutorial_plume_on_slope.
19    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
20    o calc_gw: true flux-form, account for horizontal grid spacing.
21      update rotating_tank results, but not plume_on_slope (affected at
22      truncation level, 11 digits).
23    
24    checkpoint58l_post
25    o calc_gw:
26     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
27     - remove side-drag for now (need to fix it); update plume_on_slope results.
28     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
29    o commit code to make SST/SSS weights spatially variable
30      (based on either variable in-situ or variable initial T/S weights)
31    o pkg/ecco:
32      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
33        now based on horizontally varying weights wthetaLev, wsaltLev
34      * cost_averagesflags now returns year indices in addition to day, month
35      * sflux balance is performed on annual basis
36        (sflxumm, sfluxmm2, bal_sfluxmm)
37      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
38        including separate counting and multipliers
39    o pkg/rbcs
40      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
41    
42    checkpoint58k_post
43    o testreport:
44     - always build in dir. "build" (if not there, mkdir build instead of building
45       & running in input)
46     - run in dir run (if it exists), in build otherwise.
47     - call prepare_run (if input/prepare_run exists)
48     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
49    o pkg/exf modifications to interpolation and rotation routines for more
50       reasonable treatment of North Pole singularity: for tracers North Pole
51       value is set to northernmost zonal-mean value, for zonal velocity it is
52       set to zero, and for meridional velocity it is set to northernmost value.
53    o pkg/exf/exf_check_range.F
54     - add tile index to diagnostics and move stop statement to the very
55       end of the routine.
56    o pkg/diagnostics: (diagnostics_main_init.F)
57      define title of isomorphic variables according to the current config.
58    o pkg/thsice with pkg/seaice dynamics:
59    - fix domain of computation (interior only, required for exf) and do exchanges
60    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
61    o towards a standard way of dealing with multi-threading in MONITOR
62      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
63    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
64       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
65    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
66    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
67    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
68       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
69    o tracer advection:
70     - clean-up and simplify calc_common_factors.F
71     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
72       advection subroutine (but still not used within DST advection S/R)
73    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
74    
75    checkpoint58j_post
76    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
77      from file (collects calls previously in FORWARD_STEP)
78    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
79    o adjoint store dir. adjusted accordingly
80    o genmake2
81      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
82    
83    checkpoint58i_post
84    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
85      on wind stress (SEAICEstressFactor defaults to 1.)
86    o Total number of Timers is finite (<=40): comment out 2 non-essential one
87      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
88    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
89      on CS-grid: no longer loosing mass.
90    o exf & curvilinear-grid: no longer modify longitude xC & xG.
91    o pkg/ggl90: fix sloppy output and fix a bug
92    o pkg/seaice: added SEAICEuseEVPpickup parameter
93      - Set to false in order to start EVP solver with
94        non-EVP pickup files when using SEAICEuseEVP
95      - fix sign error in diffusion in seaice_calc_rhs
96    
97    checkpoint58h_post
98    * Modifications for bottom topography control
99      o replace hFacC by _hFacC at various places
100      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
101      o add non-self-adjoint cg2d_nsa
102      o update autodiff support routines
103      o re-initialise hfac after ctrl_depth_ini
104      o works for 5x5 box, doesnt work for global_ocean.90x40x15
105    * Adding verification for 5x5 box (4-layer) bottom topography control
106    
107    checkpoint58g_post
108    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
109       used for mean seasonal cycle, mean diurnal cycle); add an example
110       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
111    o pkg/ggl90:
112      - add parameter (minimum surface kinetic energy)
113      - fix bug (avoiding division by zero)
114    o couple pkg/thsice to pkg/seaice:
115      - modify advection in seaice to accomodate new scalar fields to be advected
116      - only muliDimAdection scheme work with seaice/thsice
117      - mapping of thsice-variables to seaice-variables, back and forth
118      - does not break the verification experiments, but does not give the
119        desired results either
120    o pkg/seaice
121      - make (default) second order advection a bit less confusing?
122    
123    checkpoint58f_post
124    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
125      to pkg/seaice):
126      - new routines thsice_map_exf and thsice_get_exf provide the interface
127      - add an additional formal parameter to thsice_solve4temp
128    o pkg/exf:
129      - add new fields wspeed, snowprecip (to be able to couple to thsice)
130      - correct Stefan-Boltzmann constant
131      - new parameter for longwave surface emittance
132      - separate some stuff from exf_bulkformulae into new routines  
133        exf_radiation, exf_wind
134      - add new parameters and constants: longwave emissivity for ocean, ice
135        and snow, evaporation parameters over ice
136      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
137        either wind from stress or stress from wind
138    o pkg/thSIce:
139    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
140    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
141       and THSICE_CALC_THICKN
142    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
143    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
144      to make debugging easier.
145    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
146    o pkg/bulk_force:
147      - clean-up comments and parameters ;
148      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
149    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
150      generate new output for test-experiment: aim.5l_cs.thSI
151    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
152      testreport accordingly
153    
154    checkpoint58e_post
155    o SEAICE_CGRID adjoint done
156    o R_STAR adjoint implemented.
157      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
158      * need to sort out init. of h0facc, etc.
159    o Make pkg/profile fully independent of ecco,cost, etc. stuff
160      to be able to use it in pure forward.
161    
162    checkpoint58d_post
163    o upgrade simple test-experiment to tutorial example:
164     step.1: duplicate the experiment and (step.2) will remove the old copy.
165      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
166      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
167      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
168      tutorial_global_oce_biogeo    <- copy of dic_example
169      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
170      tutorial_plume_on_slope       <- copy of plume_on_slope
171      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
172      tutorial_global_oce_optim     <- empty for now (David ?)
173      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
174     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
175    o correct a sign problem in cost_scat.F
176    o obcs and ptracers: fix boundary conditions for advections schemes
177      with larger stencil
178    o thsice adjoint: start
179    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
180      completeness
181    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
182      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
183    o ptracers adjoint:
184      * avoid extensive recomputatations
185      * fix missing re-init. of gptr (missed by TAF)
186    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
187      me to turn off the excessive output to STDOUT that this package produces
188    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
189      and add those terms in Vector-Invariant formulation.
190    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
191      if the control period (xx_hfluxperiod etc) is 0
192    o in profiles pkg, clean routines and fix details
193    o in ecco pkg, reading ssh data:
194      fix problem in case the model does not start at iter0=0
195    o fix mnc-pickup/restart for ptracers
196    o new package prifiles:
197      code to compute profile-based cost by Gael Forget
198      (modifs in ecco, ctrl, autodiff)
199    o Benign bug fix in initialization (spotted by M. Mazloff) of
200      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
201    
202    checkpoint58c_post
203    o adjoint: finish NLFS adjoint and provide reference output in
204      verification/global_ocean.90x40x15/results_ad_nlfs
205    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
206      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
207      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
208      with SEAICE_CGRID defined.
209    o move calendarDumps from "data" to "data.cal" and clean-up the code
210      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
211    o add useEXF & useCAL flags (for now, set in hard-coded way)
212    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
213      (were missing in NH mode, and wrong in quasihydrostatic mode).
214      waiting for Chris updated version of calc_gw to add those CALLs.
215    o fix bug in quasihydrostatic S/R ;
216      add a test for this option: global_ocean.90x40x15.qshyd
217    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
218      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
219    o add on/off flag useOffLine for package OFFLINE
220    o seaice:
221      - modify advection so that it works also on the C-grid
222      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
223        problem in multi-tile runs with C-grid
224      - add flags for clipping ice velocities and/or masking solver forcing
225      - fix drag (ocean on ice) formulation and a bug that caused noise in the
226        C-grid solver
227      - added a few comments to seaice_diffusion.F
228      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
229        are now exclusive)
230      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
231        required re-ordering the code a little:
232       + make DAIRN global variable (defined in SEAICE)
233       + move computation of the viscosities eta and zeta into a new separate
234         routine (because I need to recompute them in seaice_ocean_stress.F)
235    
236    checkpoint58b_post
237    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
238      update output.txt of exp. aim.5l_cs.thSI
239    o various mnc cleanups and improvements:
240      + shrink lookup tables by factor of ~4
241      + better error reporting when running out of lookup space
242      + able to handle longer path/file names (up to 500 chars)
243    o adjoint:
244      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
245      - TBD: "hidden" mom_vecinv recomp. in dynamics
246    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
247     (allow to differentiate between forcing components using new integer flags:
248      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
249     and add new flag to put Dissipation tendency out of Adams-Bashforth.
250    o ecco
251      - enable trend removal from SSH anomaly obs.
252    o adjoint
253      - a fix for PmEpR when #undef EXACT_CONSERV
254      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
255      - try to fix "hidden" recomp. in forward_step for NLFS
256        (NLFS seems broken sometimes after I checked it in)
257    o seaice:
258     - add c-grid version of the dynamic solver:
259       + three new routines that are the c-grid substitute lsr, dynsolver
260         and ostres
261       + put a few fields that were local to dynsolver into global common
262         blocks, so that I can move the computation of stresses etc into
263         seaice_lsr (saves coding but may break the adjoint).
264     - replace more hardwired parameters by runtime parameters
265     - add ice masks that mask the rhs of the implicit solvers where there
266       is no ice (commented out in seaice_dynsolver, because i am not sure
267       if this works properly), eventually this should replace the clipping
268       of ice velocities in seaice_dynsolver to +/-40cm/s.
269    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
270      include it only where its needed
271    o move balancing of fluxes before the call of external_forcing_surf
272    o seaice:
273      - correct units of turning angles (now they are really in degrees)
274      - move computation of GWATX/Y out of main routine into dynsolver
275      - initialize GWATX/Y in seaice_init
276    o Apply mask on Fresh-Water flux (needed for SSH forcing).
277      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
278    o seaice: add runtime flags for turning angles (default to zero)
279    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
280      and trend from exf forcing and ctrl control adjustments
281    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
282      (since checkpoint57x_post)
283    o change the default rotation period to 86164.s = the Earth rotation
284    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
285      and based on a reference stratification. Tested within hs94.cs-32x32x5.
286    o seaice advection: add code for choosing between the default (2nd order
287      central differences) and multiDim advection schemes provided by
288      pkg/generic_advdiff
289    o seaice:
290      - removed all references to SEAICE_GRID.h fields from
291        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
292        (cubed-sphere configuration will change a little)
293      - grid computations in seaice_init are obsolete now.
294      - cleaned up code a little so that is easier to read (hopefully).
295      - added new (better?) discretizations of default advection and diffusion
296        (turn on with SEAICEuseFluxForm)
297      - replace 1 in 3d global fields by kSurface in growth.F
298      
299    checkpoint58a_post
300    o seaice:
301      - bug fix in advect.F
302    o shelfice:
303      - separate shelfice load anomaly from pload (breaks with time
304        dependent forcing), => introduce constant field shelficeLoadAnomaly.
305        Its default is 0., but it may be computed more cleverly from (unknown)
306        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
307        done offline. A good approximation of the pressure load anomaly is
308        necessary to avoid large initial adjustment processes underneath
309        deep-reaching shelfice.
310      - small fix in ISOMIP shelfice_thermodynamics
311      - add more sophisticated thermodynamics of Hellmer (1989), this is
312        now the default
313      - give a few constants more intuitive names
314    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
315      if bulk formulae are used in long integration (especially EmPmR). Turn
316      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
317      if balancePrintMean, the imbalance that is substracted is printed to
318      STDOUT.
319    o fix bug (typo) in obcs_apply_eta.F
320    o add a new package shelfice which enables us to model the circulation
321      underneath shelf-ice with draughts of hundreds of meters.
322     - works
323     - to do: + include improved thermodynamics
324              + check whether kSurfC (from model/inc/SURFACE.h) can be used
325                instead of new field kTopC
326              + can we use topoFile, Ro_surf and existing code in ini_depth.F
327                instead of new field R_shelfIce and new code in ini_depth.F
328                and ini_mask_etc.F?
329              + adjust vertical mixing schemes?
330    o seaice pkg:
331     - add a cpp-flag to include a simple formula for a salinity dependent
332       freezing point of sea water at the surface
333     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
334       meridional stresses are now different (and hopefully correct)
335    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
336       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
337       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
338    o pkg/diagnostics: add options and parameters for regional-statistics
339       diagnostics ; define regions by reading a region-mask from a file
340       (might add other options later)
341    o pkg/bulk_force:
342     - add option and parameters to use AIM surface-flux formulae.
343     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
344       others forcing fields (defined in PARM05, parameter file "data") are loaded
345       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
346     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
347     - use the right EXCH call for uwind,vwind (to work on CS-grid).
348     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
349       and parameters (note: calcWindStress replaces .NOT.readwindstress).
350     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
351    
352    checkpoint58
353    o add "--embed-source" option to genmake2 which, when the supporting
354      tools can be compiled (as determined by genmake2) will turn on the
355      embed_files package which then embeds the entire MITgcm source code
356      (*.[fFhc] + Makefile) used for the build within the executable
357      - requested by CNH but off by default
358      - adds a paltry <9MB to the mitgcmuv executable in most cases
359      - only writes the output when useEMBEDSRC in eedata is true
360    o clean up 3-dim. relaxation codes:
361      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
362      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
363      * Thanks to Tom Haine for testing!
364    
365    checkpoint57z_post
366    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
367      affects output (@ truncation level) of exp. plume_on_slope ; updated.
368    o fix the pickup behavior for obcs in combination with ptracers
369    o fix a bug in ptracers_external_fields_load
370    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
371      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
372    o transfered surface NH pressure to eta field (if exactConserv).
373    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
374         and update lab_sea output.txt file.
375    o completing 3-dim. relaxation code: additional term
376         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
377      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
378      * At compile time, in "EXF_OPTIONS.h" set
379          #define  ALLOW_CLIMTEMP_RELAXATION
380          #define  ALLOW_CLIMSALT_RELAXATION
381      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
382          tauThetaClimRelax3Dim = 15552000.0,
383          tauSaltClimRelax3Dim  = 15552000.0,
384      * 3 cases:
385          1) Use a constant-in-time 3-dim. field
386          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
387          3) Real-time relax. to time-evolving prescribed field
388    o Adding Laplacian-type smoothness constraint on
389      initial and boundary (forcing) controls (ic, bc)
390      * enable at compile-time via
391        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
392      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
393      * Absolute scale somewhat unclear so far
394      * no area weighting was included since no other cost term does so far
395    
396    checkpoint57y_post
397    First step for a NLFS adjoint
398    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
399    o new init. routines for calc_r_star, calc_surf_dr
400    o still need to deal with ini_masks_etc
401    o testreport seemed happy
402    checkpoint57y_pre
403    
404    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
405    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
406    o add new offset feature to offline pkg (plus minor cleanup)
407    o cfc fixes for final year of integration
408    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
409      be in GCHEM_OPTIONS).
410    
411    checkpoint57x_post
412    o fix testreport Pb in multiple test experiment.
413    o cleanup our namelist syntax in verification:
414      - make it more F95 standards compliant (some work still needed)
415      - allows the vast majority of our tests to work with gfortran
416    o Non-Hydrostatic:
417     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
418     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
419    o Allow to apply AB on T,S rather than on AB(gT,gS):
420     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
421     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
422       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
423     - need a "clever" read_pickup to restart from the other AB formulation
424    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
425    o remove some unused variables (reduces number of compiler warnings)
426    o adjoint
427      * Disable useVariableViscosity for adjoint for time being
428        (there are a number of extensive recomputations)
429      * Initialize certain variables needed for adjoint
430    
431    checkpoint57w_post
432    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
433                 fix the singleCpuIO RS version of MDSWRITEFIELD
434       and add a WARNING if using globalFiles=T with multi-processors.
435    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
436      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
437    o tracer advection scheme:
438      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
439       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
440       was not very convenient).
441      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
442       (further tests needed for the implicit DST & Flux-Limiter schemes).
443    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
444      and sRef for convenience, handy, when you want to initialize
445      ptracers in a large domain with a constant non-zero value. Also,
446      untangle ptracers_init.F a little.
447    
448    checkpoint57v_post
449    o change dome exp. to use variable viscosity in side-drag terms.
450    o remove all the files from the cfc_offline test since they are now
451      incorporated into tutorial_cfc_offline which has been producing
452      identical results for a few days of testing
453    o add new parameter: sideDragFactor to enable half-slip-side BC
454      and change side-drag S/R to use viscosity from mom_calc_visc
455      (can switch back by setting sideDragFactor=0.); affects results at
456      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
457       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
458    o vorticity & strain are now computed without masking, to account for
459      no-slip-side BC in variable viscosity calculation ; mask is applied
460      anyway later on, before computing advection/coriolis terms.
461    o modify exp4 to test new obcs support for reading from external files
462      and for passive tracers
463    o fix behavior of ptracers_monitor when monitor output is written to a
464      netcdf-file; still not independent of monitor.F (writes in the same
465      file).
466    o change default value of tRef (put a uniform, meaningful value for ocean
467      & atmos) and initialize sRef (was missing, as Martin mentioned).
468    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
469      to be proportional to enstrophy dissipation length.  Thus,
470       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
471      This is now consistent with Smagorinsky and with the manual.
472    
473    checkpoint57u_post
474    o OBCS and PTRACERS: add open boundary support for passive tracers
475      - either use homogenous (pseudo) v.Neumann conditions or prescribe
476        OB-values from file; this is not different from the way theta and salinity
477        are treated
478      - however, Orlanski-radiation conditions are not supported, and the model
479        will stop if you use pTracers and Orlanski at the same time.
480      - beefed up the rountine obcs_external_fields_load: now only those open
481        boundary values are overwritten with values from files for which there
482        are really files, otherwise the OB-fields remain untouched. This makes
483        it possible to use different OBs at different ends of the domain (as
484        with EXF)
485    o reduce number of exch calls in shap_filt (s2).
486    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
487      truncation level) 4/5 MLAdjust test results (11&12 digits match).
488    
489    checkpoint57t_post
490    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
491    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
492      same truncation, independent of the face number: affects affects several
493      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
494    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
495      note that biharmonic viscosity + no-slip was not tested in any experiment.
496    o fix bug in non-linear free-surf side-drag ; generate new output for
497      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
498    o make mnc honor the writeBinaryPrec flag for most kinds of output
499    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
500    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
501      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
502    o add brackets in multi-terms sum to get same truncation, independent of
503      the face number (manage to get exactly same value of gU,gV at the cs-edge)
504      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
505    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
506      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
507      a maximum grid-scale Reynolds number.  Also, changes all length calculations
508      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
509      Suggested values of viscosity parameters found in mom_calc_visc.
510      Many new viscosity diagnostics available.
511    
512    checkpoint57s_post
513    o Add clearing-house for viscosity calculations, mom_calc_visc and
514      correct numerous bugs in LeithD and Smagorinsky discretizations.  
515      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
516      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
517      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
518      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
519      The Strain-Tension form is now called with useStrainTensonVisc=.true.
520      ViscAhStrain and viscAhTension are now retired.
521    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
522    o In response to JMC's bug report, genmake2 now ignores any soft-links
523      that it finds in the *current* directory when searching for files.
524      Soft-links found in any other source directories will still work as
525      they did before.
526    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
527      a C routine to unlimit the stack size
528    o mnc-ify pkg/aim snapshot vars
529    o mnc-ify pkg/land as requested by Daniel
530    o various changes to mnc including:
531      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
532      - output can now be grouped so that all files within a group
533          change the ITER portion of their names in lock-step together
534      - can now read ("global") PER-FACE (in addition to PER-TILE) files
535          and works with both EXCH1 and EXCH2 (but needs more testing)
536      - writing works for all verification test cases w/ g77 on Linux
537    
538    checkpoint57r_post
539    o make MNC variable initialization happen earlier
540    o add diagnostics for (almost) each term of the momentum Eq.
541    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
542    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
543    o remove MINIMAL_TAVE_OUTPUT option ;
544      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
545    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
546      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
547    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
548    o add time-dependent SST, SSS control
549    o cost terms in ecco/ modularized (new cost_generic.F)
550    o cost_averages routines are modularized (new cost_averagesgeneric.F)
551    o new infrastructure for seaice model vs. obs misfits in seaice/
552      * driver from the_main_loop.F is seaice_cost_driver.F
553      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
554      * gradient check in Exp. 6a of natl_box_adjoint/
555    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
556      (see README file)
557    
558    checkpoint57q_post
559    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
560    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
561      - bug was reported by Jean-Michel and Ian Fenty
562    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
563      update exp. cpl_aim+ocn output.
564    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
565      Needed for high-res. runs with large global files
566      to be able to limit tapelev size
567    o Changed some tests for adjoint:
568      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
569      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
570      * global_ocean.90x40x15/ back to default 3-level checkpointing
571    o Modifications to enable scripted COMMON to MODULE conversion
572      * verification/OpenAD/code/ has necessary scripts and description;
573      * converts, compiles and runs successfully;
574    
575    checkpoint57p_post
576    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
577    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
578      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
579    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
580    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
581      (was already the case for dissipation with mom_vecinv,
582       and also the case for grad.PhiHyd when staggered-timeStep)
583      This will allow to put dissipation out-off the AB time-stepping.
584     Unfortunately, affects truncation error. Update output of exp. that "fails"
585      (cg2d matching number) and leave the others for later: front_relax(10),
586      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
587      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
588    
589    checkpoint57o_post
590    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
591      (2) its ready to be documented during the 20050801 DocFest
592    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
593      for ideal_2D_oce and lab_sea on linux_ia32_g77
594    o set to #undef CTRL_SET_OLD_MAXCVARS_30
595      in global1x1_tot/code_seaice_adj to access indices 32, 33
596      (worth another tag)
597    
598    checkpoint57n_post
599    o adding precip control xx_precip 32
600    o adding swflux control xx_swflux 33
601    o Replacing 10 forcing penalty cost routines by 1 generic.
602    o Implementing partitioning in time-mean and variable adjustment
603      for atmos. state.
604    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
605    o in natl_box_adjoint:
606      * updated exp 1 to 10
607        (but does not have time-mean vs. variable split results yet)
608    o updated global1x1/*_seaice_adj/
609      to incorporate latest changes
610    o enable useSingleCpuIO for mdsio vector routines
611      (applies in particular to tapelev I/O)
612    o removed inefficient K-loop in all active_file*control*.F
613    
614    checkpoint57m_post
615    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
616      and advect_cs (use EXCH-2 and standard cs-32 grid files).
617    o pkg/exch2: filling of face-corner halo regions is optional
618      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
619    
620    checkpoint57l_post
621     tag before updating tutorials (pre-release-2)
622    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
623       for output and interpolation of input fields onto model grid)
624    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
625       Affects results of exp. rotating_tank ; update output.txt.
626    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
627          and taking the square quantity and/or using a fraction-weight field.
628    o fix aim_diagnostics_init.F mate numbers.
629    o add mnc output capability to diagnostics/diagstat and update
630      our cvsignore files for the ACSII output generated
631    
632    checkpoint57k_post
633    o lab_sea now uses diagnostics package and provides a suite of
634      new EXF diagnostics output.
635    
636    checkpoint57j_post
637    o exf
638      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
639        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
640        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
641      * extended diagnostics output
642        - now includes all EXF variables
643        - hs, hl moved to common block
644        - separate S/R for diagnostics, called after ctrl vector is added
645        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
646        - EXFqnet contains true Qnet (i.e. includes qsw)
647      * updated verif. lab_sea, global_with_exf
648      * Rearranging hflux (exf_mapfields -> exf_getforcing)
649        to ensure that diagnostics sees a true EXFqnet
650    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
651    o diagnostics pkg: change pointers so that 1 diagnostic can be used
652      several times with different frequencies.
653    o mnc-ify the thsice package as requested by Daniel Enderton
654      - the monitor--MNC output needs work
655      - many attributes need to be added (most are currently blank)
656    o mnc-ify theaim_v23 package as requested by Daniel Enderton
657      - many attributes need to be added (most are currently blank)
658    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
659    o add Sadourny like discretization to the 4th.O vorticity advection scheme
660    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
661      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
662         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
663    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
664     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
665    
666    checkpoint57i_post
667    o Diagnostics package was changed: diagnostic allocation is now deactivated
668      by setting an empty file name in the namelist (used to be by setting 0 frequency)
669    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
670      add 1rst Order upwind vertical Shear.
671    o add a quick fix for A/B checkpointing in OFFLINE mode
672    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
673      end-run around the C/Fortran linking horror in eesup/src/timers.F
674    o added pkg/runclock: allows user to terminate run based on wall clock
675    o added non-hydrostatic scaling parameter: nh_am2
676    o pkg/my82: futile attempt to make results compiler-independent by adding
677      some "_d 0", etc. no effect.
678    o for mnc output, fill the 'T' coordinate var with myTime and create a
679      separate 'iter' variable for iteration count
680    o pkg/diagnostics:
681      add new capability: output of Global/Regional & per-level statistics ;
682      tested against monitor output (including land & thSIce) on various exp.
683    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
684    
685    checkpoint57h_done
686      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
687      data.diagnostics, data.gchem, data.ptracers) is done.
688    
689    o pkg/diagnostics: prepare for Global/Regional statistics.
690      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
691    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
692      and rename it: DIFFERENT_MULTIPLE
693    
694    checkpoint57h_post
695    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
696    o pkg/diagnostics: change output frequency, now in seconds (instead
697      of Nb of iterations). This requires to change data.diagnostics.
698    checkpoint57h_pre
699    
700    o in mnc, let the user create the output dir if both mnc_outdir_date
701      and mnc_outdir_num are false
702    o add fflags() to pkg/diagnostics which allows one to specify, on a
703      per-file basis, the file precision [default behavior is unchanged]
704    o added diagnostics to pkg/kpp, including computation of mixed layer
705      depth based on a temperature/density criterion
706    o updated verification/natl_box to test the new pkg/kpp diagnostics
707    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
708    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
709    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
710      not mnc -- this mistake was found by JMC and is now corrected
711    
712    checkpoint57g_post
713    o add Adams-Bashforth 3rd Order time stepping:
714      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
715      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
716    checkpoint57g_pre
717    
718    o make lambda[Theta,Salt]ClimRelax spatially varying
719      (default remains spatially uniform constant based on tau)
720    o added new control variables
721      * init. uVel, vVel, etanN
722      * lambda[Theta,Salt]ClimRelax
723    o separate masks used for ctrl_pack/unpack 'from write_grid' output
724      (suggested by G. Forget)
725    
726    checkpoint57f_post
727    o add parameter "baseTime" = model base time = time at iteration zero
728      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
729      account for baseTime shift
730    o move Coriolis arrays from PARAMS.h to GRID.h
731    checkpoint57f_pre
732    
733    o mnc-ifying the seaice package
734    o introduced an alternative length scale calculation for use in the limiting
735      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
736    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
737    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
738      as well as grad(vort3).  Made it compatible with both approximate form
739      for the cubed sphere and full form of these gradients.  Added flag
740      useFullLeith to select between approximate and full form.  
741    o add "d0" in getcon.F to reduce differences between compilers/platforms
742      update output.txt of exp. fizhi-gridalt-hs
743    o change port_rand funtion to allow to set the seed.
744    o fix obscure MNC bug involving conversion between reals and integers
745      - it caused no problems with certain (eg. gcc, ifc) compilers but the
746        new version is now more standards-compliant
747    o adjoint-related modifications
748      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
749      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
750      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
751    
752    checkpoint57e_post
753    o Adding eddy stress controls a la Ferreira et al.
754    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
755    
756    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
757      update output.txt of exp. fizhi-gridalt-hs
758    o add more "Z" dimensions and associated coordinate vars to MNC
759    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
760    o parameter calendarDumps: when set, approximate months (30-31 days) and years
761      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
762      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
763      months and years.  Requires pkg/cal.
764    o diagnostics: add pickup functionality
765      - off by default for backwards compatibility
766      - current version only uses MDSIO -- MNC will be added
767    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
768    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
769    
770    checkpoint57d_post
771    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
772    o modify verification/ideal_2D_oce so that it tests the creation of mnc
773      output from the diagnostics package
774    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
775    o make genmake2 more portable by using ".$FS" instead of ".f" for more
776      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
777    o add coordinate variables to the MNC output from the diagnostics package
778    o change MNC-flags default value: true when useMNC=TRUE
779    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
780      the ability (off by default) to read the grid information using MNC
781    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
782    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
783    o do snap-shot diagnostics at the middle of the time-interval (instead of
784      at the end).
785    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
786      new test for AIM with thSIce + slab-ocean
787    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
788    o move state variable diagnostics to the beginning of the time step ;
789      (note: still needs some work specially for snap-shot diagnostics)
790      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
791    
792    checkpoint57c_post
793    o Change testing option (-ieee) to get closer agreement between g77 & ifort
794    o generate new output.txt files on faulks with g77 & the new -ieee option
795    checkpoint57c_pre
796    
797    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
798      update output.txt of exp. global_ocean.90x40x15
799    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
800      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
801    o add saltFlux(+File) forcing capability with periodicExternalForcing
802    o allow to use pkg diagnostics for GM-Redi & ThSIce output
803    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
804    o improvements for the MNC output from DIAGNOSTICS:
805      - correct handling of the unlimitied dimension
806      - all dims now have associated coordinate variables
807      - variables located at U, V, and Corner ("Z") points are now written
808        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
809        *all* data points are output
810    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
811    o added pkg/seaice/seaice_monitor.F
812    o mdsio_readfield.F can now read files visible only to master MPI process.
813    o pkg/seaice: some test code for ice-modified ocean stress
814    o exf_getffields interpolation defaults to bilinear for all scalar forcing
815      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
816      spurious negative numbers for precipitation and humidity.  Will cause
817      some small numerical differences for integrations using pkg/exf/exf_interp.F.
818    o pkg/ctrl/
819      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
820        May be enabled via doPackDiag
821      *  introduce z-scaling of
822         + gradient (doZscalePack) and
823         + control (doZscaleUnpack)
824    o pkg/mdsio/
825      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
826      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
827    
828    checkpoint57b_post
829    o simplify options in diagnostics_fill arguments (remove weird combinations)
830    o fix MNC coordinate variables so that they now contain per-face index
831      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
832      general, EXCH2 grids are only aligned to a "local" coordinate system
833    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
834    o Implement instantaneous output within pkg diagnostics:
835      setting a negative frequency in data.diagnostics produces
836     "snap-shot" output (as opposed to time-average if freq > 0)
837    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
838      NOTE: change ptracer diagnostics name: use 2 characters to work with
839            more than 9 tracers. Add also diagnostics of advect & diffus flux.
840    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
841      becomes the coordinate variable for the 'T' dimension
842    o add CF-style coordinate variables to MNC
843      - just a first cut:  numbers are meaningless on the cubesphere and
844        missing along the T axis but otherwise it works!
845    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
846    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
847    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
848      this is based directly on what the model compute, so that the content of
849      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
850    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
851    o clean up build options files for SunOS, in particular
852      - remove -traditional from xmakedepend
853      - change -xarch=v9 to -xarch=native for f77
854      - restore use of make (not gmake)
855      - add CC=gcc if using g77
856    o changes per discussion of AM, JMC, & EH3 today:
857      - move redundant "grid" variables out of "state" -- in preparation of
858        creating proper CF-style coordinate variables and in recognition
859        that any/all grid variables can be easily copied (eg. w/NCO) from
860        the grid files into any of the other NetCDF files
861      - *always* output grid variables with MDSIO (this will eventually be
862        changed)
863      - output MNC grid file if useMNC is true
864    o every instance of _END_MASTER() has been found and replaced with
865      _END_MASTER( myThid ) in order to satisfy certain picky Sun
866      preprocessors
867    o re-arrange diagnostics pkg initialisation:
868     - allow each package to extend the available diagnostics list
869     - add some checking and fix small problems (multi-threaded, ...)
870     - new S/R diagnostics_fill (replace fill_diagnostics):
871       look through the short list of active diag. (instead of the long list)
872       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
873    
874    checkpoint57a_post
875    o this set of changes restores TAMC compatibility
876      tested for global_ocean.90x40x15 adjoint on trough
877      (what a pain)
878    
879    checkpoint57a_pre
880    o some modifs in tools/build_options for sunos
881    o call ctrl_pack for ctrl at end for optimcycle=0
882    
883    checkpoint57
884    o add horizontal bi-harmonic viscosity for vertical velocity
885      - new parameter viscA4W (defaults to viscA4)
886      - affects only non-hydrostatic code
887      - to be done: no-slip lateral boundary conditions
888    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
889    o implement Implicit Vertical advection for pTracers
890    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
891      (implemented also for implicit vertical diffusion & advection)
892    o OBCS: extend application of tracer open boundary conditions
893      to a strip beyond the boundary of width Olx/Oly
894    o add call monitor to TAF set of required calls (flow directives)
895      and include in natl_box_adjoint
896    o untangle a few ifdefs related to cost, ctrl, autodiff
897      untangel a few ALLOW_ECCO_OPTIMIZATION
898    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
899      (theta2, salt2 in ecco_cost_weights)
900    
901    checkpoint56c_post
902    o OBCS as control variables
903      - update ctrl_ad_diff.list, obcs_ad_diff.list
904      - remove balance of obcs controls from default
905      - fix index bug nobcs in ctrl_init
906      - fix dummy fields filen in ctrl_pack
907      - add dummy weights for obcs
908    o lsopt: comment out fort.94 output
909    o optim:
910      - remove unnecessary header files
911      - adjusted namelists
912      - add xerbla.F to Makefile
913    o exf:
914      - multiple modifications of exf_check_range
915      - unit change in exf_init_runoff from [m/year] to [m/s]
916    o mdsio:
917      - i/o-vector change debugLevel from debLevA to debLevB
918    
919    checkpoint56b_post
920    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
921      is called from DO_THE_MODEL_IO
922      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
923      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
924      - clean up PTRACERS_WRITE_TIMEAVE a little
925    o add another verification experiment that tests both the cfc-pkg and
926      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
927      reactive tendencies treated inline with regular timestepping
928    o testreport previously did a lousy job of comparing small numbers, so
929      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
930      implemented in the little c-progam tmp_cmpnum.c which is embedded in
931      testreport.
932    o ptracers_monitor: bug fix for MPI
933    
934    checkpoint56a_post
935    o GCHEM: finish reorganizating the package
936      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
937        (introduces another 3D-array for each passive tracer, but only if
938        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
939        gchemTendency is not needed because the timestep is done separately)
940      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
941      - GCHEM is now---more or less cleanly---separate from PTRACERS
942      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
943        so clear to me how that should be done in a general way.
944    o CFC: improve formatting of output in CFC_ATMOS
945    o PTRACERS:
946      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
947        that ALL experiments with ptracers enable can be checked. This makes
948        GCHEM_MONITOR obsolete.
949      - include a runtime parameter PTRACERS_monitorFreq that defaults to
950        monitorFreq
951      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
952    o add PTRACERS (PTR0[1-5]) to testreport output
953    o exf_check_range:
954      * default changed to .TRUE.
955      * will check values for niter0 if debLevA, every timestep if debLevB
956      * STOP in exf_check_range if 'out of range'
957      * range chosen generous to allow for potential extema
958      TBD: a version with stricter range
959           permitted range would be runtime parameters
960    o GMredi:
961      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
962      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
963      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
964    o GCHEM:
965      - move call to GCHEM_FORCING_SEP, so that it is now called before
966        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
967      - introduced a useGCHEM runtime flag and applied it everywhere.
968      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
969        this flag is now only visible within GCHEM-pkg routines.
970      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
971        be replaced by a 3D array that is computed before thermodynamics; for
972        this, the tracer ID iTracer had to be included into the parameter list
973        of ptracers_forcing
974      - set up forward_step to call gchem_forcing, that will replace
975        gchem_forcing_int in ptracers_forcing
976      - cleaning up
977    o small cleaning of exch2: remove files that are also in eesupp/src
978    
979    checkpoint56
980    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
981    o mnc: cleanup "full" files--fixes out-of-memory problem
982    o ECCO-GODAE
983      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
984      * fully merged and updated from SIO code
985        windstress sign change affects
986        - exf_inscal_[u/v]stress
987        - sign of xx_tau[u/v] adjustments
988        - signs in cost_scat
989      * ctrl_get_gen: avoid update of tau[u/v] for first few days
990      * natl_box_adjoint updated and compressed
991      * 2-level checkpoint switch added
992        (tested in EXP. 1 of natl_box_adjoint)
993      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
994    o SVD
995      * first complete, non-hacked version for SVD calculations
996      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
997        performed via direct access files admtlm_vector.it????
998        (via ctrl_[un]pack)
999      * optimcycle is used for ARPACK iteration counter
1000        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1001      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1002        and add linear transforms where necessary
1003      * controls are initial/final SST, SSS (can be extended; need to check
1004        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1005    o mdsio: filename info to both stderr, stdout
1006    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1007      from sign change
1008    
1009    checkpoint55j_post
1010    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1011      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1012    o add consistent build directories and .cvsignore files to verification
1013    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1014    o make all subroutines 30 or less characters in length for certain older
1015      compilers to work (a thorough search only turns up two routines in
1016      pkg/ptracers)
1017    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1018      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1019    
1020    checkpoint55i_post
1021    o change arrays for total vertical diffusivity (2.D if explicit,
1022      3.D if implicit) ; each ptracer uses its own background value.
1023    o added mnc/NetCDF output capability to ocn_compon_interf
1024      - added bits to verification/cpl_aim+ocn so that it can run on
1025        ITRDA and other clusters without the mpirun "-wd" option
1026    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1027      configuration
1028    o give MNC the ability to create additional files rather than
1029      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1030      - the default is just less than 2GB which is a practical limit
1031        on many systems
1032    o Compute the non-local term using either KPP vertical diffusivity (=default)
1033       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1034    
1035    checkpoint55h_post
1036    o add verification test "vermix"
1037    o remove all the *_ioinc flags and replace with the single global
1038      outputTypesInclusive flag
1039    o allow to set a vertical profile of vertical diffusivity for T & S
1040    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1041    o useMNC moved from data.mnc to data.pkg
1042    
1043    checkpoint55g_post
1044    o Renaming carbon AD experiments to comply with testreport conventions
1045    o Updating adjoint of Held-Suarez hs94.1x64x5
1046    o Fixing directives for non-ECCO forward_step, after ECCO directives
1047      have been fixed to avoid recomp. of do_oceanic_phys
1048      Works well for global_ocean.90x40x15,
1049      but recomp. issue remains for carbon
1050    o Updating adjoint output for natl_box_adjoint after
1051      pkg/ecco has been modified (see taga c55d_post)
1052    
1053    checkpoint55f_post
1054    o rename to timeave_init_fixed
1055    
1056    checkpoint55e_post
1057    o some delicate re-shuffle of store directives to avoid one
1058      extra call of do_oceanic_physics
1059      affects ecco_the_main_loop.F, do_oceanic_physics.F
1060      checkpoint_lev1_directives.h
1061    o NB: this may break global_ocean adjoint temporarily,
1062      but it is clear how to fix it. Will do later, need this now.
1063    
1064    checkpoint55d_post
1065    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1066    o ecco_cost_weights is modified to 1x1 runs
1067    o modifs to allow observations to be read in as
1068      single file or yearly files
1069    o enable to read exf forcing fields as either
1070      single file or yearly files (flag useExfYearlyFields)
1071    checkpoint55d_pre
1072    
1073    o switch between 2-level and 3-level checkpointing
1074    o add ability of MNC to write local and "partial" (eg. 2D slices where
1075      the full 3D field is never actually stored) arrays to NetCDF files
1076      with the correct (that is, the complete multi-dimensional) set of
1077      array indicies
1078      - used in mom_vecinv() to write the diagFreq output
1079      - tested (demonstrated) in verification/aim.5l_cs
1080    o further mnc-ification
1081      - add verification/lab_sea to the list with mnc setups
1082      - fix undefined mnc v-names in cd_code
1083      - add kpp to mnc output (both snapshot and timeave)
1084    o non-hydrostatic code
1085      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1086        in calc_gw.F
1087      - defaults to viscAh
1088      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1089        friction or Leith) in non-hydrostatic mode, as long as there is
1090        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1091    o pkg/cost
1092      extend simple cost functions to treat time mean quantities
1093      (T,U,V) via cost_accumulate_state from cost_tile
1094    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1095        be 2 times larger than the minimum size the advection scheme requires.
1096        now get a perfect conservation of salt in advect_cs test-exp (updated)
1097    o GGL90 (Gaspar's TKE mixed layer)
1098      - add horizontal diffusion of TKE, requires exchanges in
1099        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1100        default. In OPA there is no horizontal diffusion of TKE but the
1101        mixing coefficients are computed from a horizontal average of TKE of
1102        6 points or so. I think that diffusion has a little more physical
1103        justification.
1104      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1105        was in vain)
1106      - mask tke-variable in ggl90_init
1107    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1108    o fix biharmonic diffusion on CS-grid.
1109    o more obcs stuff
1110      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1111        for reading boundary values. This routine is called from
1112        obcs_prescribe_read
1113      - updated obcs_check
1114      - changed sponge layer relaxation parameter units for days to seconds
1115      - turned off sponge layer by default
1116      - changed argument list of OBCS_CALC to myTime+deltaTclock
1117      - fixed about 35 bugs in obcs_external_fields_load
1118    
1119    checkpoint55c_post
1120    o obcs stuff
1121      - new runtime flags useOBCSprescribe, useOBCSbalance
1122      - re-arranged obcs_calc
1123      - moved exf_getobcs to obcs_prescibe_read
1124        obcs_prescibe_read is called after ORLANSKI stuff
1125        and independent of it (executable can contain all).
1126      - updated obcs_check
1127      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1128        These may be necessary only if tangential velocities are
1129        prescribed at OB, not sure, needs testing.
1130    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1131      which simplifies the calls and passes the ifc check-bounds test
1132    
1133    checkpoint55b_post
1134    o add a 2D scalar, Z location, exchange_2 routine.
1135    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1136      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1137      affects advect_cs results (for the wrong reason): update output.txt
1138    o use a more standard discretization for biharmonic viscosity ;
1139     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1140      affects results of dome set-up: update output.txt
1141    o fix gad_advection.F (CubedSphere part), back to version 1.23
1142    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1143    
1144    checkpoint55a_post
1145    o merged code to
1146      * prescribe/read time-dependent open boundaries
1147        (works in conjunction with exf, cal)
1148      * sponge layer code for open boundaries
1149      * each boundary N/S/E/W now has its own CPP option
1150        (healthy for the adjoint)
1151    
1152    checkpoint55
1153    o up-to-date adjoint of previous breaks
1154      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1155      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1156      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1157      - carbon: * remove tr1-related adjoint verification
1158                * add ptracer as control variable
1159    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1160      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1161    
1162    checkpoint54f_post
1163    o in verification/carbin/ remove experiment related to
1164      ALLOW_PASSIVE_TRACER (array tr1 etc)
1165      code_ad/ input_ad/ results_ad
1166    
1167    o add two new packages
1168      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1169        + subject to optimization (memory)
1170      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1171        + subject to reordering (many GOTOs in the original code)
1172        + so far opps is called for every (i,j) point, and then operates in
1173          the vertical; one may want to reorder the scheme in order operate in
1174          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1175          fields)
1176    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1177      - all verification tests compile and run with linux_ia32_g77
1178      - defaults are compatible with current input files--nothing
1179        should change if you were not previously using MNC
1180      - MNC output has been added in numerous places (eg. timeave)
1181        but there are still a few writes not yet do-able with MNC
1182        (this is in progress)
1183      - flags now allow for either/or/both use of MDSIO and MNC and
1184        documentation will soon follow
1185      - numerous small formatting cleanups for ProTeX
1186    o add version info (via BUILD_INFO.h) to MNC and stdout
1187    
1188    checkpoint54e_post
1189    o add two new packages
1190      - pp81 (Packanowski and Philander, 1981), Richardson number and
1191        stratification dependent mixing
1192      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1193      - these scheme operate in a similar manner as KPP (without ghat, of
1194        course), however there is only one diffusivity that is used for both
1195        temperature and salinity (and passive tracers)ç
1196    o add offline package
1197    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1198      provided by Stephanie Dutkiewicz
1199    o genmake2: add ability to search for C compilers and cleanup test output
1200      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1201    
1202    checkpoint54d_post
1203    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1204    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1205      leading to additional shift by 5 days each year of integration
1206       (i.e. leading to considerable offset over the years)
1207    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1208    o start with no AB and no initial filtering (staggerTimeStep):
1209      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1210    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1211      (external loading & cpl import/export stay in forward_step.F)
1212    o update coupling interface to work with new staggerTimeStep
1213    o change MDSIO ptracers_pickup.
1214    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1215    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1216    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1217    
1218    checkpoint54c_post
1219    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1220      this affects (truncation error) output.txt of test-exp:
1221       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1222    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1223    o change Qnet to always be the net heat flux, (+upward).
1224      affects (truncation error) output of natl_box exp.: updated
1225    o define the max number of passive tracers in PTRACERS_SIZE.h
1226    o start to test mnc routinely in exp0
1227    o add sea-ice loading (sIceLoad) as a new forcing field.
1228    
1229    checkpoint54b_post
1230    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1231       impressive on Altix and Opteron systems)
1232    o diagnostics can now write NetCDF files through the mnc package
1233    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1234    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1235    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1236      affects (truncation error) output of lab_sea & natl_box exp.: updated
1237    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1238    
1239    checkpoint54a_post
1240    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1241    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1242    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1243    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1244      + internal_wave (shift in writing cg2d_ini_res)
1245    checkpoint54a_pre
1246    
1247    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1248      - modified verification/lab_sea and natl_box_adjoint accordingly
1249    
1250    checkpoint54
1251    checkpoint53g_post
1252    o prepare splitting of thermodynamics: store convect.counter in common block
1253    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1254      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1255    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1256    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1257    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1258    o restore adjointability
1259    
1260    checkpoint53f_post
1261    o modifications that affect AIM experiment results (update output.txt):
1262      - no advection of S at top interface Nr (pkg/generic_advdiff)
1263      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1264    o AIM pkg:
1265      - include stability function into surf.Flux derivative relative to Tsurf
1266      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1267    
1268    checkpoint53e_post
1269    o merged cylindrical coord configuration
1270    o added rotating_tank experiment
1271    checkpoint53e_pre
1272    
1273    checkpoint53d_post
1274    o faulks upgraded: re-generate output.txt that have changed:
1275       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1276    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1277    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1278    o added Sadourny discretization of Coriolis
1279      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1280      - re-enabled use of omega3 (useAbsVorticity)
1281    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1282      vector-invariant equations
1283      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1284    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1285      hopefully without new bugs
1286      - still to do: biharmonic friction for non-hydrostatic w
1287    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1288    o regenerated output for global_ocean_ebm (using -ieee)
1289    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1290      of mom_common/
1291      - simple re-arrangement of instructions within computing loop
1292    checkpoint53d_pre
1293    
1294    checkpoint53c_post
1295    o new version of coupler for AIM+thSIce and Ocean models
1296     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1297     - land: change Evaporation of snow
1298     - aim with thSIce: fix bug in snow-precip.
1299    o changes to calc_gw.F
1300     - bug fix for w^2 term near the bottom boundary
1301     - (hopefully) improve the lateral slip boundary condtions for use with
1302        partial/looped cells
1303      - because the bug fix changes two verification experiments anyway (exp5
1304        and plume on slope), change the lateral boundary condition from half slip
1305        to the value of no_slip_sides
1306    o ebm package wasnt quite up to the parallel task. Fixed that.
1307    o Adjoint of EBM package + verification
1308      * TLM OK
1309      * ADM not sufficient accuracy yet (needs further testing)
1310    
1311    checkpoint53b_post
1312    o Commiting new energy balance model to repository
1313      * package is pkg/ebm
1314      * verif. is verification/global_ocean_ebm
1315      * references are in ebm_driver.F
1316    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1317    C        Global thermohaline circulation. Part I:
1318    C        Sensitivity to atmospheric moisture transport.
1319    C        J. Climate 12(1), 71-82
1320    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1321    C        Global thermohaline circulation. Part II:
1322    C        Sensitivity with interactive transport.
1323    C        J. Climate 12(1), 83-91
1324    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1325    C        Destabilization of the thermohaline circulation
1326    C        by atmospheric eddy transports.
1327    C        J. Climate 7(12), 1870-1882
1328    o Will need long integration testing.
1329    checkpoint53b_pre
1330    
1331    o created pkg/mom_common in preparation for variable viscosity code
1332    o renamed and split ini_mnc_io
1333    o pkg/land: only liquid water can diffuse or run-off
1334    o AIM using land: soil wetness availability account for snow
1335    o added printMapIncludesZeros to EEPARMS namelist
1336    
1337    checkpoint53a_post
1338    o restore TAMC compatiility for exf_constants.h
1339      (no usage of _d in .h)
1340    o Additional storing in KPP in an attempt to fix
1341      TAMC problem with adjoint of KPP code.
1342      (no success...)
1343      Identical code works fine with TAF.
1344    o Fixed verification/natl_box_adjoint experiments.
1345      Initial conditions for Experiments 4 and 5 are now
1346      set to "SEAICE_initialHEFF=0", which is more reasonable,
1347      and hence gives results closer to that of Experiment 2.
1348      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1349    
1350    checkpoint53
1351    o stable checkpoint with up to date adjoint
1352      TLM tests only run for 1st grdchk at the moment. Its unclear if
1353      this is a code problem or a problem with resetting code for g_
1354      variables that is being autogenerated wrong.
1355      Otherwise:
1356       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1357       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1358         are both still in chaos following their security messes.
1359    
1360    checkpoint52n_post
1361    o various build (mostly genmake2) changes including:
1362      - ability to build/run more easily within Cygwin and MacOS X
1363      - more complicated Makefiles with a stronger dependence on Gnu Make
1364    o pkg/seaice modifications
1365      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1366        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1367        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1368      - changed proxy for geostrophic velocity and updated
1369        verification/lab_sea/results/* accordingly
1370      - removed ADI dynamic solver from pkg/seaice
1371      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1372        they caused a segmentation fault under certain circumstances
1373      - removed unused field WATR
1374    o bug fix in exf-package:
1375      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1376         now reflect that.
1377    o small fixes in the cal-package:
1378      - set reference date to first of January for the 'model'-calendar
1379      - failing of cal_CheckDate in cal_FullDate now actually results in a
1380        warning
1381    o small modifications in exf-package to increase flexibility:
1382      - change climtempfreeze from a constant to a runtime parameter that
1383        is specified in data.exf_clim (default = -1.9)
1384      - introduce runtime parameter windstressmax (default = 2.0) that is
1385        specified in data.exf
1386    o fix in pkg/thsice:
1387      - update Evap (Tsf changes) to be consistent with Latent heat flux
1388      - maintain snow precipitation unchanged (even if Tsf >=0).
1389     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1390    
1391    checkpoint52m_post
1392    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1393      this does not change any of the results, because myIter=0 in swfrac always
1394      lead to jwtype=2 (the default anyway), but the call makes little sense
1395      as a default
1396    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1397    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1398      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1399    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1400    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1401    o extending useSingleCpuIO option to work with new exch2 I/O format
1402      - old-style, missing-tile I/O is still accessible by defining CPP
1403        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1404    o monitor package can write to NetCDF files and/or STDOUT
1405    o fix re-definition bug in MNC_GRID_INIT_ALL()
1406    o doc/api_reference added
1407      - a framework for building an API Reference Manual using all
1408        the "protex" comments embedded in the code
1409      - see pkg/generic_advdiff, pkg/mnc for examples
1410    o MNC:
1411      - make myThid the last argument for all subroutines
1412      - new default for the grid files: NO halos
1413      - add useMNC and other run-time flags
1414      - separate per-file-group handling of the unlimited dimension
1415      - early initialization of MNC w/ flags read at the eeboot stage
1416        and lookup tables set in initialize_fixed
1417      - write all MNC output to a freshly-created directory
1418    o thermodynamics sea-ice (thsice) is now tested with testreport.
1419    o test exp. advect_cs: use the standard cs32 grid ; update output.
1420    o Added functionality to grdchk:
1421      pick global i,j,k position (or nearest wet) where to perform check.
1422    
1423    checkpoint52l_post
1424    o new land formulation:
1425      a) use ground enthalpy as prognostic variable to ensure exact
1426         energy conservation.
1427      b) account for water temperature and for latent heat of freezing
1428         in all processes (rain, run-off, ground storage)
1429      c) compute surface and ground temperature implicitly.
1430    o aim_v23 modification for new land model:
1431      a) Treat separately land / ocean / sea-ice surface fluxes
1432         to allow implicit computation of land & sea-ice surface temp.
1433      b) add snow precipitation.
1434    checkpoint52l_pre
1435    
1436    o fix problem (when 1 tile is empty) in min/max monitor.
1437    o fix bug in timeAve (u,vZetatave in common block)
1438    o no restoring terms under ice for pkg/seaice
1439    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1440    o bug fix for pkg/seaice pickups
1441    o change MNC call locations and add coordinate attributes
1442    o mask vorticity at the corner ; affects global_ocean.cs output
1443    o fix ini_curvilinear_grid ; test CS experiments with mpi
1444    o aim.5l_cs: modify sea-ice fraction input file ; update output
1445    o exf: Adding simple range check routine for exf fields after read
1446    
1447    checkpoint52k_post
1448    o removed top-level directory "diags"
1449      - we migrated these functions to pkg/timeave a long time ago
1450    o fixed bug introduced in pkg/monitor
1451    o accuracy ctrlprec = 32 insuffient for gradient checks using
1452      averaged fields (I/O via cost_averages)
1453      -> use ctrl.h in active_file*.F to control I/O precision.
1454    o paramter list of CALL ADTHE_MAIN_LOOP
1455    o added initial do_the_model_io to ecco
1456    o set all ...Freq to zero after cost_final
1457      taveFreq, dumpFreq, pChkptFreq
1458    o MAIN and ECCO differentiability restored
1459    
1460    checkpoint52j_post
1461    o fix nchklev in tamc.h for global_ocean...
1462    o Bringing flow and store directives up-to-date
1463    o Really weird thing!
1464      call do_the_model_io from the_main_loop with parameters
1465      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1466      TAF places a faulty re-call of initialise_varia
1467      after cost_final call which should not be there!
1468    checkpoint52j_pre
1469    
1470    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1471      error messages
1472    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1473    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1474      debug output
1475    o modfied mdsio_writefield.F to handle non-global files under exch2
1476    o update AIM Cubed-Sphere exp (aim.5l_cs):
1477      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1478    o update AIM Equatorial Channel exp:
1479      use standard aim_v23 pkg and change the SST fields to be more realistic.
1480    o globalFile now works with exch2
1481    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1482      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1483    o limit timeave output for hi-res integrations
1484    
1485    checkpoint52i_post
1486    o removed CPP_EEOPTIONS.h from verification/*/code
1487    o updated the tiling for global_ocean_pressure
1488    checkpoint52i_pre
1489    
1490    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1491      the old pkg/aim).
1492    
1493    checkpoint52h_pre
1494    o shortened offending lines in exch2_send_rx?.template
1495    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1496    o genmake2: add build & execute test for NetCDF code
1497    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1498      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1499    o added useSingleCPUIO flag to monitor.F and mon_out.F
1500    o added temporary hack for sea-ice dynamics on the cube:
1501      metric terms are ignored and it is assumed that
1502      there is no sea-ice on cube faces 1, 2, 4, and 5.
1503    
1504    checkpoint52f_post
1505    o added exch2 cube routines to pkg/exch2
1506    o modified hs94.cs-32x32x5 to use it
1507    o added new grid files to hs94.cs-32x32x5
1508    checkpoint52f_pre
1509    
1510    checkpoint52e_post
1511    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1512      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1513    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1514      to work with implicit vertical advection and AB ;
1515    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1516    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1517     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1518    checkpoint52e_pre
1519    
1520    o fix bug in impldiff when Nr=1 or Nr=2.
1521    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1522    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1523    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1524      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1525    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1526    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1527    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1528    
1529    checkpoint52d_post
1530    o re-tiled many expts to allow comparison in multi-processor mode
1531      - updated output accordingly
1532      - changed hs94.128x64x5 to use intial T from file rather than use the
1533        random number generator
1534    o add infrastructure in model routines for fizhi and gridalt packages
1535    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1536    o changes to permit hi-res, cubed-sphere, configuration
1537      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1538      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1539      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1540        of surface winds for the cube
1541      (A verification experiment, based on global_ocean.cs32x15, but with
1542       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1543       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1544       complete with example surface forcing files and matlab scripts to look
1545       at the output and compare it with that of global_ocean.cs32x15.)
1546    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1547       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1548       to conform to the common rule.
1549    o check-in the first version of the coupler + interfaces for multi-components
1550       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1551       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1552       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1553       - ocean and atmos. share the same horizontal grid (no interpolation).
1554       - exchanges between component and coupler is done in forward_step
1555    o new verification experiment, cpl_aim+ocn:
1556       coupled ocean - AIM atmosphere on cs32 grid.
1557    
1558    checkpoint52d_pre
1559    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1560    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1561    
1562    checkpoint52c_post
1563    o Fixing OPTIONS files for use of exf:
1564      - ALLOW_ECCO not needed
1565      - ECCO_CPPOPTIONS.h should not be included from
1566        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1567        as has been the case in the past
1568      - All cal/exf related options are currently set in
1569        single header file. Should remain so until we
1570        agree on a consistent new policy.
1571    o Removed all CPP options for cal package.
1572      cal has no more CPP options.
1573    o modified STOREs in GAD_ADVECTION
1574    o corrected key comp. for passkey
1575    
1576    checkpoint52b_post
1577    o new version: "thsice" of thermodynamic sea-ice pkg:
1578     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1579     - modify fluxes but do not change theta directly;
1580     - light cleaning of bulk_force pkg (still needed with thsice).
1581     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1582       + output_thsice.txt to test thsice & bulk_force pkgs.
1583    o put back grid & coriolis monitor output.
1584    checkpoint52b_pre
1585    
1586    o call "do_the_model_io" at the beginning (=> dump initial state)
1587    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1588    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1589      (need info on NUMBER_OF_PTRACERS)
1590    o missing PTRACERS headers in some routines
1591    o default tamc.h in pkg/autodiff supposed to crash
1592      to ensure proper customization
1593    
1594    checkpoint52a_post
1595    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1596      - moved surfaceTendencyTice from pkg/seaice to main code
1597      - subroutine FREEZE_SURFACE now limits only surface temperature
1598        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1599        => new output.txt for global_ocean.cs32x15 & global_with_exf
1600      - keep the old version of FREEZE for backward compatibility;
1601        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1602      - corresponding modifs for TAF directives
1603    o added surface flux output variables to TIMEAVE_STATVARS
1604    o time-averaged output for pkg/ptracers
1605    o fix problem with ECCO-related divided adjoint
1606      snapshot file was missing some ad-variables,
1607      but no warning issued by TAF
1608    
1609    checkpoint52a_pre
1610    o some bug fixes for #undef REAL4_IS_SLOW
1611    
1612    checkpoint52 = ecco_c52_e35
1613    o after testing adjoints of checkpoint51u_post
1614    
1615    checkpoint51u_post
1616    o this is the post-merge tag of the ecco-branch
1617      (needs another clean checkout and re-testing)
1618    o various natl_box_adjoint configs and results
1619      but no input fields
1620    o obcs adjoint not yet merged!
1621    o adding ECCO global 1x1 and 2x2 degree configs
1622    o updated/extended some store directives for seaice
1623    o pkg/ecco now containes ecco-specific part of cost function
1624    o top level routines the_main_loop, forward_step
1625      supersede those in model/src/
1626      previous input data.cost now in data.ecco
1627      (new namelist ecco_cost_nml)
1628    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1629    
1630    checkpoint51t_post
1631    o this is the pre-merge tag of the ecco-branch
1632    
1633    checkpoint51s_post
1634    o cleanup: removed various obsolete #define-s
1635    o pkg/grdchk
1636      - renamed 'ph-grd 3' to 'grad-res'
1637      - merged from ecco-branch
1638        (remaining bug fixes for obcs gradient checks)
1639      - additional high-precision output for testreport
1640        (grep for 'precision_grdchk_result')
1641    
1642    checkpoint51r_post
1643    o cleaned up or removed CPP_OPTIONS.h files
1644    o updated results for some of the tests to reflect the new
1645      optfiles (-ieee: -O0 instead of -O3)
1646    
1647    checkpoint51q_post
1648    o cd_code:
1649      - moved cd_scheme.F -> cd_code_scheme.F
1650      - separate read_checkpoint from cd_code_ini_vars.F
1651      - separated cd_code part from write_checkpoint
1652      - updated AD_SOURCE, generated .flow
1653      - added CD_CODE_VARS.h to the_main_loop
1654      - Moving cd_code specific store dir.s to pkg/cd_code
1655    o ctrl package totally restructured
1656      - pack/unpack now optional and decoupled from
1657        xx_/adxx_ I/O
1658      - ctrl_pack/unpack cleaned
1659        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1660      - confined inclusion of AD_CONFIG.h to where necessary.
1661    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1662    
1663    checkpoint51p_post
1664    o create initial cd_code package
1665      - WARNING: the initialization of fields within packages
1666        is broken because INI_FIELDS (where READ_CHECKPOINT is
1667        called) is called *before* PACKAGES_INIT_VARIABLES.
1668        This seems to be backwards since
1669        1) its important to initially zero the entire field including
1670           the "halo" region
1671        2) zeroing needs to be done *before* reading pickup info
1672           and the pickup call might or might not happen in any
1673           particular run
1674      - this needs an overhaul for R2
1675    o cleanup verification/*/code/GMREDI_OPTIONS.h
1676    o cleanup testreport
1677    
1678    checkpoint51o_post
1679    o bringing AD-related verif's up to date with genmake2
1680      - carbon/
1681      - global_ocean.90x40x15/
1682      - hs.94.1x64x5/
1683      - (front_relax/ )
1684    o (more) consistent directory structure for AD-related verif.'s
1685    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1686    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1687    o bug fix in find_alpha.F for MDJWF:
1688      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1689        change rho -> rho-rhoConst
1690      - replace call find_rho to find_rhonum
1691    o initialisation of rFlx extended to full array (required by TAF)
1692      and shifted to thermodynamics
1693    o removed PTRACERS.h in ptracers routine
1694    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1695    o Correcting initialisations for fVerU, fVerV.
1696    o helping TAF to recognize dependency on kUp for
1697      fVerU, fVerV
1698    o Replacing delZ by delR in pkg/ctrl/
1699    checkpoint51o_pre
1700    
1701    o undid all of cp51 pending some cleanups and discussion
1702    o added the [#include "AD_CONFIG.h"] statement to all files that need
1703       it for adjoint/tl #defines
1704     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1705     o removed tools/genmake since it no longer works
1706    
1707    checkpoint51n_post
1708    o modifications to make FREEZE flux visible to pkg/kpp
1709      - moved surfaceTendencyTice from pkg/seaice to main code
1710      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1711      - subroutine FREEZE now limits only surface temperature
1712        (this means new output.txt for global_ocean.90x40x15,
1713         global_ocean.cs32x15, and global_with_exf)
1714    o added surface flux output variables to TIMEAVE_STATVARS
1715    
1716    checkpoint51n_pre
1717    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1718    o added [#include "AD_CONFIG.h"] to all files that use the following
1719      defines:
1720      - ALLOW_ADJOINT_RUN
1721      - ALLOW_TANGENTLINEAR_RUN
1722      - ALLOW_ECCO_OPTIMIZATION
1723    
1724    checkpoint51m_post
1725    o incorporating changes to get TAMC/TAF working in genmake2
1726      - added new TAMC/TAF targets to the Makefile
1727      - various cleanups related to package handling
1728      - these changes should have no impact on the forward model
1729    
1730    checkpoint51l_post
1731    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1732     - faster algorithm for cal_addtime.F
1733     - higher precision arithmetic, where needed
1734     - pkg/exf *startdate variables changed from calendar date to
1735       model integration time
1736    
1737    checkpoint51l_pre
1738    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1739    o enable to apply restoring on S & T only in a latitude band.
1740    o update output (external_forcing_surf modif. change truncation errors)
1741       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1742    
1743    checkpoint51k_post
1744    o change default to: useNHMTerms=.FALSE.
1745     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1746       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1747     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1748        exp1, ideal_2D_oce
1749     - change data file of oceanic exp (leave the results unchanged for now)
1750       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1751    o set gravitySign automatically according to the vertical coordinate used
1752      (and change sign: back to "logical" value: +1 when R increases downward)
1753    o added an include barrier to the default CPP_OPTIONS.h and
1754      removed the #include "PACKAGES_CONFIG.h" from it
1755    o fix a bug in mom_fluxform (from chk51j_post)
1756    
1757    checkpoint51j_post
1758    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1759    o adjusted some flow directives (dynamics, thermodynamics)
1760    o added cubed-sphere case to test cost function
1761    o heckpoint_lev?_directives.h now include
1762      pkg-specific directives, whenever those are enabled.
1763    o Moving pkg-specific flow directives to corresponding pkg
1764      Moving pkg-specific differentiation list to corresponding pkg
1765      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1766      ---> conventions are
1767           - pkg_ad.flow
1768           - pkg_ad_diff.list
1769           - pkg_ad_check_lev?_dir.h
1770    
1771    checkpoint51i_post
1772    o merge of the branch-genmake2
1773      - knowingly breaks the older genmake
1774      - automatic generation of all ALLOW_${PKG_NAME} defines
1775      - new testreport supersedes older testscript
1776    o large number of package inclusion and header cleanups
1777    checkpoint51i_pre
1778    
1779    o new output for adjoin of global ocean vector invariant
1780    o fix for checkpoint of thermodynamic seaice and bulk_force
1781    o Steph gchem various cleanups
1782    
1783    checkpoint 51h_pre
1784    o fixed some single quotes
1785    o modify gchem pkg to be more versatile
1786    o modifications to clean up dic pkg
1787    o add pkg/cfc
1788    
1789    checkpoint51g_post
1790    o provide links for ARPACK and ADM*TLM
1791    o start removing verification/vero/
1792    o update AD-related stuff
1793      (in particular some IF-statements in model/src/ routines)
1794    o adding to verification/global_ocean.90x40x15/ adjoint of
1795      vector invariant setup
1796    
1797    checkpoint51f_post
1798    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1799    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1800      of tracer Green's fucntions for ocean inversion project.
1801    
1802    checkpoint51f_pre
1803    o Added on-the-fly spatial interpolation capability
1804        "USE_EXF_INTERPOLATION" to pkg/exf.
1805      - This is a temporary Cartesian-grid hack until
1806        the super-duper ESMF coupler becomes available.
1807      - See verification/global_with_exf/README for usage example.
1808      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1809        flags and modified pkg/seaice accordingly.
1810    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1811        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1812        non-local transport term.
1813    
1814    checkpoint51e_post
1815    o pkg/mom_vecinv:
1816      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1817      - add time-ave diagnostic of vorticity advection.
1818    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1819    o atmospheric geopotential: - include water vapor effect;
1820                                - use p^kappa in p* scaling.
1821    o land pkg: read initial state from files.
1822    o AIM : add stratospheric drag in the upper level
1823    
1824    checkpoint51d_post
1825    o change function ILNBLNK (=> last non-blank char.) to return zero
1826      (instead of the string length) when the string. char is empty
1827    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1828    o modif's to restore TAMC compatibility
1829      - avoid "_d" constructs in PARAMETER declarations
1830      - avoid interrupting lines by comment lines
1831    o Use cluster local disks for purely local I/O
1832      vs. globally visible disks needed for ctrl stuff
1833      (merged from ecco-branch)
1834      - new active_file_loc... and mdsio_..._loc routines
1835      - affected packages: autodiff, ctrl, grdchk, mdsio
1836    
1837    checkpoint51c_post
1838    o introducing integer flag debugLevel
1839      - debLevZero: suppress all output
1840      - debLevA: standard
1841      - debLevB: equivalent to current debugMode=.TRUE.
1842    o introducing pathname variable mdsioLocalDir for mdsio
1843      that can be specified at runtime
1844      (relevant for cluster I/O to local disk)
1845    `
1846    >>>checkpoint51b_post
1847    adjoint of ptracers
1848    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1849    o extended state in checkpoint_lev?, etc.
1850    o alternative ctrl/cost with tr1 or ptracer
1851    o new comlev1_bibj_ptracers
1852    o new ptracers.flow
1853    o made ptracers_forcing same as external_forcing_s
1854    o added verification for adjoint with ptracers
1855      - adm. grdchk fail so far
1856      - tlm. grdchk OK
1857      - checked tapelev/comlev recomputations: OK
1858    <<<checkpoint51b_pre
1859    
1860    checkpoint51a_post
1861    o added code for biogeochemistry package
1862      - new pkgs: dic, gchem
1863      - new subroutine in ptracers
1864    o modify code for biogeo packages
1865      - in model/src and pkg/ptracers
1866    
1867    checkpoint51
1868    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1869      - autodiff, ctrl, exf, grdchk, seaice
1870      kept separate packages
1871      - cost, ecco, obcs
1872    o updating verification/internal_wave, verification/lab_sea
1873      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1874    
1875    checkpoint50i_post
1876    o Preparing next differentiable checkpoint and sync
1877      of MAIN vs. ecco-branch
1878      - 1st step: this one is differentiable
1879      - 2nd step: next(! not this) checkpoint will have updated packages
1880                  from ecco-branch)
1881    
1882    checkpoint50h_post
1883    o new package "land": provide surface BC for AIM.
1884    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1885    o AIM: use true log-P extrapolation for near surface temp (= as in
1886        F.Molteni paper) ; update aim.5l_cs output.
1887    o New variable in PARM03 for more flexible pickups
1888    o somewhat cleaned package initialisation sequence for
1889      ctrl/ cost/ ecco/ in packages_... routines
1890    
1891    checkpoint50g_post
1892    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1893      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1894      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1895        made the default because of faster convergence than ADI
1896    
1897    checkpoint50f_post
1898    o exf totally restructured
1899      - replaced all exf_set_ routines by one generic exf_set_gen.F
1900        and made sure it's still differentiable
1901      - split exf_getffields.F into new exf_bulkformulae.F
1902      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1903      - updated adjoint/makefile and relevant verif. accordingly
1904    
1905    checkpoint50f_pre
1906     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1907          + change Evap over land. (update aim.5l_cs output)
1908     o added missing .cvsignores and made uniform across expts
1909     o changed configuration of tidal_basin_2d expt
1910     o added pkg/debug functions for tracing code in fatal crashes
1911     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1912     o new fn in pkg/monitor to stop model if solution grows too big
1913     o removed lots of single quotes from comments
1914    
1915    checkpoint50e_post
1916    o make KPP work with PTRACERS
1917     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1918       nearly a copy of kpp_transport_s
1919     - there is no analogue to SurfaceTendencyS, so I have to use
1920       gPtr(of the surface layer) instead
1921    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1922    checkpoint50e_pre
1923    
1924    checkpoint50d_post
1925    o change kpp output from multiple-record state files to single-record state
1926      files analogous to write_state.F
1927    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1928      analogous to the cg2d-related output.
1929    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1930      so that writing to internal file fn (with length 512) fails.
1931    checkpoint50d_pre
1932    
1933    checkpoint50c_post
1934    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1935    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1936    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1937    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1938    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1939    
1940    checkpoint50c_pre
1941    Merging from release1_p13:
1942    o bug fix for pkg/seaice dynamic solver
1943    o Added SEAICE_initialHEFF to pkg/seaice
1944    
1945    checkpoint50b_post
1946    o store u*,v* in gU,V instead of in guNm1,gvNm1
1947    o in order to put the momForcing out of the Adams-Bashforth:
1948      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1949      to timestep.F
1950    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1951    o re-generate output for highly sensitive test-exp:
1952       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1953    
1954    checkpoint50b_pre
1955    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1956    o corrected CPP option mismatch in exf_Bulk... functions for case
1957      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1958    
1959    checkpoint50a_post
1960    o Bug fix for merging between c50 and KPP.
1961      ikey was passed from thermodynamics to kpp_calc via
1962      common block rather than being recomputed in kpp_calc,
1963      in contradiction with new key itdkey.
1964      New key ikppkey created, and tamc.h headers updated.
1965    
1966    checkpoint50
1967    - 2nd step of merge with ecco-branch:
1968      merge changes in ecco-branch back into main trunk
1969    - bug fix in find_alpha
1970    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1971    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1972    - merged some sliced AD support routines
1973    
1974    checkpoint49
1975    merged from ecco-branch:
1976    o exf:
1977      - Enable initialisation of forcing fields to constant
1978        (runtime) values.
1979      - in exf_getffields.F
1980        Reduce i-/j-loop to interior domain, discarding overlaps.
1981        That also fixes wrong TAF-key computations for key_1, key_2
1982        with bulf formulae.
1983      - exf_init.F modify #ifdef for exf_init_evap
1984      - exf_getffieldrec.F, ctrl_getrec.F
1985        The following INT-usages are not safe:
1986          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1987          fldcount = int(fldsecs/fldperiod) + 1
1988        and were modified.
1989    o autodiff: checkpoint_lev...
1990      - updated storing for bulk formulae (some arrays were missing)
1991      - added state for seaice package
1992      - synchronized with main branch
1993    o DIVA:
1994      Modif.s in
1995      - the_main_loop.F
1996      - the_model_main.F
1997      and added cost_final_restore.F cost_final_store.F
1998      o With these changes, it is possible to fully separate
1999        the first forward run to compute the cost function (mdthe_main_loop)
2000        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2001        into separate model executions.
2002        This enables better tuning of DIVA to given queue sizes.
2003      o Loss of cost function value in consecutive DIVA runs is
2004        fixed by storing to 'costfinal' file.
2005      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2006        beginning/end of adjoint integration is accounted for.
2007      The current changes apply to TAF-1.4.26.
2008      TAF has one remaining bug, requiring one manual change
2009      (see MITgcm manual).
2010    o cal: synchronized between MAIN and ecco-branch
2011    
2012    checkpoint48i_post
2013    o Changes to restore differentiability of code w.r.t. previous tag
2014      (mostly adding new routines to make list and replacing
2015      pressure by totPhiHyd).
2016    o Updated and merged grdchk package
2017      - has both ADM and TLM checks
2018      - works for single- and multi-proc.
2019      - output cleaned
2020      - worked successfully for parallel DIVA
2021    o genmake:
2022      - Adding -platform=SP4
2023      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2024    o Modif. for DIVA:
2025      ctrl_unpack should not be called in intermediate DIVA interval.
2026      (similar thing would apply for active files such as
2027      tbar, sbar, psbar, which should not be reinitialised;
2028      only relevant for ecco-branch)
2029    
2030    checkpoint48h_post
2031    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2032    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2033    o Added SEAICE_initialHEFF to pkg/seaice
2034    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2035    
2036    checkpoint48g_post
2037    --- EOS:
2038    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2039      store total Potential in totPhyHyd for diagnostics & EOS.
2040    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2041    --- Pressure/geopotential gradient:
2042    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2043    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2044      ( changes results of global_ocean_pressure )
2045    o NLFS + z-coord.: add eta*Rho' contribution.
2046    o accurate phiHyd when using interface-W at the middle between 2 centers
2047     ( changes results of ideal_2D_oce )
2048    o includes r* 2nd term in potential gradient.
2049    
2050    checkpoint48f_post
2051    Merging from release1_p12:
2052    o Modifications for using pkg/exf with pkg/seaice
2053      - improved description of the various forcing configurations
2054      - added basic radiation bulk formulae to pkg/exf
2055      - units/sign fix for evap computation in exf_getffields.F
2056      - updated verification/global_with_exf/results/output.txt
2057    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2058      (SBO) core products, including oceanic mass, center-of-mass,
2059      angular, and bottom pressure (see pkg/sbo/README.sbo).
2060    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2061      to avoid negative values in shallow regions.
2062      - updated verification/natl_box/results/output.txt
2063      - updated verification/lab_sea/results/output.txt
2064    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2065    o Added useSingleCpuIO option (see PARAMS.h).
2066    o Updated useSingleCpuIO option in mdsio_writefield.F to
2067      work with multi-field files, e.g., for single-file pickup.
2068    o pkg/seaice:
2069      - bug fix in growth.F: QNET for no shortwave case
2070      - added HeffFile for specifying initial sea-ice thickness
2071      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2072    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2073      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2074    o pkg/seaice:
2075      - adjoint-friendly modifications
2076      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2077    
2078    checkpoint48e_post
2079    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2080    o dynamics: change definition of computational domain & adapt mom_fluxform
2081      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2082    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2083        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2084        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2085        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2086        inverted_barometer solid-body.cs-32x32x1
2087      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2088    
2089    checkpoint48d_post
2090    o in preparation for r*:
2091     a) use pre-computed gradient of hydrostatic potential:
2092        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2093     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2094        => affects results of glob_oce_pressure (different truncation error)  
2095      update output.txt of ideal_2D_oce & global_ocean_pressure
2096    
2097    checkpoint48d_pre
2098    o in preparation for r*:
2099      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2100      pass the 2 comp. of the grad. as arguments to momentum S/R.
2101      but for the moment, only used if it does not change the results.
2102    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2103    
2104    checkpoint48c_post
2105    Modifications in treatment of initial flux forcing controls
2106    to avoid extra storing of flux fields.
2107    
2108    checkpoint48c_pre
2109    o Added tidal_basin_2d experiment (currently 1D!)
2110    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2111    
2112    checkpoint48b_post
2113    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2114     (modification to pressure gradient not yet implemented)
2115    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2116      (for U & V) that are used for vertical advection of momentum.
2117    
2118    checkpoint48a_post
2119    o In preparation for r*, use temp. array to compute vertical transport
2120       in flux-form momentum pkg. => change results of few test-exp.
2121      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2122                        lab_sea, natl_box & plume_on_slope
2123    
2124    checkpoint48
2125    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2126    
2127    checkpoint47j_post
2128    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2129    o moved adexch from forward_step to addummy_in_stepping
2130    o added exch in ctrl_map_...
2131    o aveFreq.=0. at end of cost_final to avoid overwrite in
2132      reverse checkpointing loop
2133    o Yet more changes in gmredi:
2134      * adgmredi_calc_tensor
2135        avoiding all recomputation of gmredi_slope_limit
2136      * adgmredi_x/y/rtransport
2137        added flag for excessive storing to avoid recomp. of
2138        u/v/rtans, dTdx/y/z
2139        -> this is not really necessary and very memory-consuming
2140      * adgmredi_slope_psi:
2141        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2142      * gmredi_slope_limit
2143        re-activated full calculation of taperfct for case 'ac02'
2144    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2145    
2146    checkpoint47i_post
2147    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2148    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2149      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2150    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2151    o gmredi: fix few bugs.
2152    
2153    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2154    This will be a good checkpoint to plug into the ecco-branch.
2155    o few modif.'s to get latest version adjointed
2156      (mainly kick out code in ini_linear_phisurf)
2157    o modif's to run adjoint with exactConserv
2158    o case GM_BOLUS_ADVEC should be cleaned
2159      S/R gmredi_slope_psi should be cleaned
2160    o verification/carbon now has exactConserv=.TRUE.
2161    
2162    checkpoint47g_post
2163    o time-average AIM output: becomes independent from statvars time-average
2164      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2165    o After TAF bug fix:
2166      Tested adjoint of gmredi package.
2167      Tests were done with checkpoint47 rather than with latest
2168      checkpoint47f_post since the latter is broken for the adjoint
2169      verification/carbon/ contains both ADM and TLM gradient checks.
2170    Here they are, before they get changed/lost/stolen.
2171    Mostly modif.'s to fix numerical sensitivities.
2172    Gradient checks OK for
2173    - GM_taper_scheme:
2174      * clipping
2175      * ac02
2176      * linear
2177      * glw91
2178      * dm95
2179      * ldd97
2180    - GMREDI_OPTIONS:
2181      * GM_VISBECK_VARIABLE_K
2182      * GM_NON_UNITY_DIAGONAL
2183      * GM_EXTRA_DIAGONAL
2184      * GM_BOLUS_ADVEC
2185    in conjunction with data.gmredi parameters to be checked in
2186    in a few minutes under verification/carbon/code/
2187    
2188    checkpoint47f_post
2189    Merging from release1_p10:
2190    o modifications for using pkg/exf with pkg/seaice
2191      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2192        and SEAICE_EXTERNAL_FLUXES
2193      - pkg/exf CPP options EXF_READ_EVAP and
2194        EXF_NO_BULK_COMPUTATIONS
2195      - usage examples are Experiments 8 and 9 in
2196        verification/lab_sea/README
2197      - verification/lab_sea default experiment now uses
2198        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2199    
2200    checkpoint47e_post
2201    o created a tag prior to creating a branch
2202    
2203    checkpoint47d_post
2204    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2205      at the bottom boundary had an erroneous half slip boundary condition
2206    o added bottom drag and no slip boundary condition capabilities to
2207      oceanic pressure coordinates code
2208    o added new verification experiment global_ocean_pressure, this experiment is
2209      also described in the tutorial section of the manual
2210    checkpoint47d_pre
2211    
2212    checkpoint47c_post
2213    o Added a verification experiment for a global cubed-sphere ocean run
2214      -  verification/global_ocean.cubed32x32x30
2215      -  uses pkg/therm_seaice and pkg/bulk_forcing
2216    
2217    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2218    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2219      when using P-coordinate; only implemented for atmospheric config.
2220    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2221      NOTES: requires option NONLIN_FRSURF to be "#define".
2222    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2223    
2224    checkpoint47b_post
2225    Merging from release1_p9:
2226    o pkg/seaice
2227      - removed GOTO's and added taf directives
2228      - double precision constants to reduce the g77 (Linux)
2229        to F77 (SGI) differences reported in release1_p8
2230    o tools/genmake
2231      - added SGI options
2232    o verification/testscript
2233      - updated to that of checkpoint47a_post
2234    o verification/global_ocean.90x40x15/input/eedata
2235      - modified for SGI f77 compatibility
2236    o verification/lab_sea
2237      - added description of sea-ice model
2238      - added missing matlab routines
2239      - added test of thermodynamics parallelization
2240    
2241    checkpoint47a_post
2242    o new pkg: aim_v23
2243     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2244       for now, keep the same surface forcing as before.
2245     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2246     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2247     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2248    o add diagnostic of surface correction term in monitor output
2249    
2250    o bulk_force and therm_seaice
2251    - Two packages:  bulk_force (Bulk forcing)
2252      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2253    - Earlier integration from Stephaine Dutkiewicz
2254      and Patrick Heimbach.
2255    - Two ifdef statements for compile time,
2256       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2257    
2258    checkpoint47
2259    differentiable version of checkpoint46n_post
2260    o bug fix in quasihydrostaticterms
2261    o * "clean" adjoint code (in terms of extensive recomputations)
2262        can now be obtained for all GMREDI options (i.e. for
2263        - GM_VISBECK_VARIABLE_K
2264        - GM_NON_UNITY_DIAGONAL
2265        - GM_EXTRA_DIAGONAL
2266        - GM_BOLUS_ADVEC )
2267      * However, wrong gradient check problem remains unsolved.
2268      * New CPP options have been introduced for different
2269        tapering schemes
2270    o external_fields_load now part of differentiation list
2271    o pressure needs multiple storing;
2272      would be nice to have store_pressure at beginning or
2273      end of forward_step, e.g. by having phiHyd global (5-dim.)
2274      (NB: pressure is needed for certain cases in find_rho,
2275      which is also invoked through convective_adjustment).
2276    o recomputations in find_rho for cases
2277     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2278    o #define ATMOSPHERIC_LOADING should be differentiable
2279    o ini_forcing shifted to begining of initialise_varia
2280    o Incorporating QNVS line search routines into MITgcm
2281      (this is separate code, and therefore not under pkg)
2282      lsopt/, optim/
2283    o Updated verification/carbon/
2284      - #define GM_VISBECK_VARIABLE_K
2285      - GM_taper_scheme    = 'ldd97'    
2286    
2287    checkpoint46n_post
2288    Merging from release1_p8:
2289    o verification/natl_box:
2290      updating new external_fields_load routine
2291    o New package: pkg/seaice
2292      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2293      The sea-ice code is based on Hibler (1979-1980).
2294      Two sea-ice dynamic solvers, ADI and LSR, are included.
2295      In addition to computing prognostic sea-ice variables and diagnosing
2296      the forcing/external data fields that drive the ocean model,
2297      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2298      The implied surface heat flux is then stored in variable
2299      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2300      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2301      non-local transport term.  Because this call precedes model
2302      thermodynamics, temperature under sea-ice may not be "exactly" at
2303      the freezing point by the time theta is dumped or time-averaged.
2304      N.B.: fairly large differences in accuracy occur across
2305            different platforms/compilers; comparison between
2306            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2307            generated output gives:
2308       T           S           U           V
2309      C D M    c        m  s        m  s        m  s        m  s
2310      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2311      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2312      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2313    
2314      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2315    o GAD:
2316      - generated new common blocks to account for call of
2317        same gad routines with differing traceridentities
2318        (needed to modify tracerIdentity indices in GAD.h)
2319      - generated separate common blocks for case useCubedSphereExchange
2320        (Department of Futurology)
2321      - parameter lists to gmredi_?transport: added tracerIdentity
2322      - added new key indices to tamc.h
2323    o external_fields_load:
2324      - added this routine to TAF list
2325      - needed to make some common blocks global and additional storing
2326        along the same lines as exf package (checkpoint_lev?_directives.h)
2327    o exf:
2328      updated external forcing package
2329      - bug fixes carried over from ecco-branch
2330        (missing OBCS_OPTIONS.h in two routines)
2331      - enable easy to use "no forcing".
2332      - added exf I/O for atmospheric loading
2333      - added exf I/O for runoff data
2334      - transfered scaling between exf <-> MITgcm to exf namelist
2335    o Adding new verification experiment global_with_exf.
2336      This verification experiment is almost identical to the
2337      global_ocean.90x40x15 experiment, except that it uses
2338      the exf (and cal) package instead of the
2339      external_fields_load routine (cf README file).
2340    
2341    checkpoint46m_post
2342    o modified testscript to return -- when there are no lines of "%MON" output
2343    o added new flag "quasiHydrostatic" for QH mode
2344      and new routine quasihydrostaticterms()
2345    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2346      New routine: mom_u_coriolis_nh()
2347    o fixed sign of non-hydrostatic metric terms in u and v equations.
2348      Depend on correct sign of gravitySign.
2349    o added work.pc* to .cvsignore in aim directories using ifc
2350    o introduced flag for controllin non-hydrostatic metric terms
2351    o removed gravitySign from PARM04
2352    o switched to g77/ifc from pgf77 in aim experiments
2353    
2354    checkpoint46l_post
2355    o made convective adjustment work with pressure coordinates:
2356     - changed the direction of k-loop in convective_adjustment.F for the
2357       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2358     - adjusted the reference pressure k-index in convective_adjustment.F
2359     - adjusted the convection condition in convect.F (in analogy to
2360       calc_ivdc.F)
2361     - convective_adjustment no longer computes anything on the halos
2362     - removed the warnings about negative salinity from find_rho.F and
2363       find_alpha.F; instead the new routine look_for_neg_salinity, called
2364       at the beginning of find_rho, find_alpha, and find_beta, does a
2365       check of the entire slice, if CPP-option
2366       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2367    checkpoint46l_pre
2368    
2369    checkpoint46k_post
2370    o fixed the verification/global_ocean.90x40x15 experiment:
2371     - new bathymetry (the world according to A., JMC, and M.)
2372     - new initial fields and forcing fields (*.bin files)
2373     - new POLY3.COEFFS (for the next release one should switch to a full
2374       equation of state: JMD95P or MDJWF)
2375     - fixed several errors and redundancies in the data file
2376     - experiment uses looped cells
2377     - added matlab directory with diagnostic scripts for plotting of output
2378    
2379    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2380     - read AIM physics parameters from a file (data.aimphys)
2381     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2382    
2383    checkpoint46j_post
2384    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2385    o move wVel computation at the end of the time step, in S/R integr_continuity
2386    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2387    o update timeave pkg for wVel diagnostic.
2388    checkpoint46j_pre
2389    
2390    checkpoint46i_post
2391    o Clean up AIM package (and keep the results unchanged):
2392      include CPP_OPTION and use IMPLICT NONE in all routines ;
2393      declare all the variables _RL ; use _d 0 for all numerical constants.
2394      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2395    
2396    checkpoint46h_post
2397    o cleaned up the use of rhoNil and rhoConst.
2398      - rhoNil should only appear in the LINEAR equation of state, everywhere
2399        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2400        and the dynamical equations are all divided by rhoConst
2401    o introduced new parameter rhoConstFresh, a reference density of fresh
2402      water, to remove the fresh water flux's dependence on rhoNil. The default
2403      value is 999.8 kg/m^3
2404    o cleanup up external_forcing.F and external_forcing_surf.F
2405      - can now be used by both OCEANIC and OCEANICP
2406    checkpoint46h_pre
2407    
2408     Added code to convert surface volume flux (fresh water) into
2409     a mass flux when using P coordinates in the ocean (OCEANICP).
2410     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2411    
2412    checkpoint46g_post
2413    o Include a new diagnostic variable phiHydLow for the ocean model
2414      - in z-coordinates, it is the bottom pressure anomaly
2415      - in p-coordinates, it is the sea surface elevation
2416      - in both cases, these variable have global drift, reflecting the mass
2417        drift in z-coordinates and the volume drift in p-coordinates
2418      - included time averaging for phiHydLow, be aware of the drift!
2419    o depth-dependent computation of Bo_surf for pressure coordinates
2420      in the ocean (buoyancyRelation='OCEANICP')
2421      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2422        Theta, Salinity, and Pressure in the parameter list. This routine is
2423        presently contained in find_rho.F. This routine does not give the
2424        correct density for 'POLY3', which would be a z-dependent reference
2425        density.
2426    o cleaned up find_rho
2427      - removed obsolete 'eqn' from the parameter list.
2428    o added two new verification experiments: gop and goz
2429      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2430    checkpoint46g_pre
2431    
2432    checkpoint46f_post
2433    o Enable tangent linear (forward mode) gradient checks:
2434      - extended active file handling to g_... files
2435      - added TANGENT_SIMULATION to theSimulationMode
2436      - extended grdchk package accordingly
2437    o added tangent linear setup in verification/carbon/code_ftl
2438    o added adjoint setup in verification/front_relax/code_ad
2439    
2440    checkpoint46e_post
2441    o Added new equation of state -> MDJWF
2442      - EOS of McDougall et al., 2002, JAOT, submitted
2443      - caveat: the equation of state is only valid for a smaller (more
2444        realistic?) range of values than JMD95P/Z and UNESCO
2445      - added masks to the calculation of pressure in store_pressure
2446      - added more check values for density in check_eos (ini_eos.F), some of
2447        the old check values are out of the range of the MDJWF-eos, so don't
2448        expect perfect matches for those
2449    checkpoint46e_pre
2450    
2451    checkpoint46d_post
2452    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2453      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2454      case of pressure coordinates. eosType='JMD95Z' in
2455      combination with buoyancyRelation='OCEANICP' now causes an error.
2456    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2457      in find_alpha/beta.
2458    checkpoint46d_pre
2459    
2460    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2461      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2462    
2463    checkpoint46c_post
2464    o Changes necessary for ocean in p-coordinates
2465     -  Added new buoyancy relation = 'OCEANICP'
2466     -  Added new parameters = gravitySign (this used to be contained inside
2467        the factor dRdZ which I added when we first switched to R coordinates).
2468     X GM/Redi is not compatible (yet)
2469     X bottom drag and no-slip need to be debugged.
2470    checkpoint46c_pre
2471    
2472    checkpoint46b_post
2473    o Added new equation of state -> JMD95Z and JMD95P
2474      - EOS of Jackett and McDougall, 1995, JAOT
2475      - moved all EOS parameters into EOS.h
2476      - new routines ini_eos.F, store_pressure.F
2477    o Added UNESCO EOS, but not recommended because it requires
2478      in-situ temperature (see JMD95)
2479    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2480      unesco.f to be used with POLY3
2481    checkpoint46b_pre
2482    
2483    checkpoint46a_post
2484    o Added (atmospheric) pressure loading
2485      - new field in FFIELDS.h, etc...
2486      - new cpp flag ATMOSPHERIC_LOADING
2487    o Changed hFacC to _hFacC in calc_phi_hyd.F
2488    o Added SHORTWAVE_HEATING to some files for consistency
2489    checkpoint46a_pre
2490    
2491    checkpoint46
2492    further merges from release1_p5
2493    o new ctrl package
2494      - adopted from ECCO environment to enable optimization
2495      - added Eliassen Palm fluxes to controls
2496    o added Eliassen Palm flux controls to gradient check package
2497    o cost package
2498      - Compatible with new ctrl package
2499      - added Eliassen Palm cost hooks
2500      - modif's of existing cost functions
2501    o Adjoint-related bug fixes in kpp:
2502      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2503      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2504    o autodiff package
2505      - flow directives:
2506        + new for S/R do_the_model_io
2507        + enhanced for S/R checkpoint
2508        + new gmredi.flow
2509      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2510        disable adcommon.h/g_common.h by default.
2511      - fixed problem for adjoint of global_max
2512    o modified verification/carbon/
2513    o New setup for adjoint of global_ocean
2514    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2515    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2516    o incorporated hooks for sponge layer code (external_forcing.F)
2517    
2518    checkpoint45d_post
2519    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2520    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2521      (affects plume_on_slope "cg2d" output)
2522    o add new parameter deltaTfreesurf for free-surface time stepping
2523    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2524    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2525    o change phiMin in exp1 (to agree with documentation)
2526    o add new flags:
2527     - T,S forcing inside/outside Adams-Bashforth
2528     - turn off temp,salt advection and/or forcing
2529     - for each tracer, define internal flag for multiDimAdvection & A-B
2530    o monitor: change definition of KE to check conservation of Energy
2531    
2532    checkpoint45c_post
2533    o Removed f90 comments ("!")
2534    o Modified initialisations to enable exf package for MITgcm
2535      (without invoking ECCO_PACKAGE).
2536    o modifications to gradient check package (Martin Losch)
2537      - enable centered differences
2538      - modified format of standard output
2539    
2540    checkpoint45b_post
2541    o cleaned exchange calls in cg2d
2542    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2543    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2544      to configure barotropic setup (Martin Losch)
2545    o moved some initialisations within bi,bj loop in dynamics
2546      (TAF flow dependency)
2547    o in initialise_varia, moved call packages_init_variables
2548      before convective_adjustment_init
2549      (corresponding adjustment of TAF tape initialisation).
2550    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2551    
2552    checkpoint45a_post
2553    o compute Rho over the whole domain (extend iMin,jMin indices)
2554    o specific exchange for X-slice domain (case Ny=1)
2555    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2556    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2557    
2558    checkpoint44h_post = checkpoint45
2559    o Fix to restore differentiability:
2560      place at which packages_init_variables is called in
2561      initialise_varia is crucial for reverse control flow.
2562    o modifications in GMRedi to enable stable adjoint
2563      (corresponding modif's in thermodynamics, dynamics)
2564    o added missing hook for sponge layer code in external_forcing
2565    o modified test cost functions
2566    o storing in gad_advection (plus removal of write(0,*)!
2567    o missing headers TR1.h added in convective_adjustment routines
2568    o errorMessageUnit set non-equal zero in eeboot
2569      (conflict on some platforms, e.g. IBM SP3)
2570    o modified carbon verif.
2571    
2572    checkpoint44h_pre
2573    o vertical grid option: allow to put the Interface at the middle between
2574      2 cell-centers ; replace delZ in pkg/kpp by drF.
2575    o GM Advective form: Tracers are advected using the residual transport (=
2576      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2577    
2578    checkpoint44g_post
2579    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2580      results) ; ifdef missing in thermodynamics.F
2581    
2582    checkpoint44f_pre,checkpoint44f_post
2583    o added PTRACERS package
2584      This allows an arbitrary number of passive tracers to be integrated
2585      forward simultaneously with the dynamicaly model.
2586      + Implemented so far:
2587        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2588        - I/O and checkpointing
2589        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2590      + Not implemented so far:
2591        - KPP
2592        - OBCS
2593      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2594        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2595        line in data.pkg.
2596      + This package is disabled by default since it increases storage.
2597    
2598    
2599    o testscript: added -cleanup option
2600    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2601                 b) enable to filter 2D fields.
2602    
2603    checkpoint44e_pre,post
2604    o re-wrote convective adjustment to use pre-calculated weights
2605      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2606      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2607      Original calls to convect() still in place.
2608    
2609    chkpt44d_pre,post
2610    o added missing EXCLUDE_MONITOR flags
2611    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2612      (incompatible typ in MIN/MAX expressions caused problems
2613      on IBM SP3)
2614    o in genmake added variable MAKEDEPEND
2615      plus resetting for case SunOS
2616    o added timer_stats.c routine for IBM SP3
2617    o removed variables in dynamics
2618    !!! I forgot to create tag chkpt44d_pre !!!
2619    !!! But chkpt44d_pre = chkpt44c_post    !!!
2620    
2621    o real fresh water flux implemented with non-linear free-surface.
2622    
2623    chkpt44c_pre,post
2624    o few fix (mask in shap_s2, EmPmR in external_field_load,
2625      USE_NATURAL_BCS in solve_for_P);
2626    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2627    
2628    checkpoint44b_pre/_post
2629    o merge of relevant stuff from the ecco-branch:
2630      - genmake: removed $S64 overwrite for case SunOS
2631      - pkg/exf: update and corrections for field swapping and obcs
2632      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2633                  harmonized between ECCO and MITgcm
2634      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2635                      updated checkpointing_lev... lists for obcs
2636      - model/src: minor changes in forward_step, plot_field
2637                   added directive for divided adjoint in the_main_loop
2638      - pkg/mdsio: added mdsio_gl_slice
2639    
2640    o check parameters & config (chkpt44a_pre,post)
2641    o OBC and NonLin_FrSurf.
2642    
2643    checkpoint44
2644    o fix bug in mom_vi_del2uv
2645    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2646    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2647    o update AIM experiments (NCEP input files)
2648    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2649    o added some stuff for AD
2650    
2651    checkpoint43
2652    o added two new advection tests
2653    o added global 4x4 degree ocean test
2654    o added test of H&S94 with free surface on cube
2655    o some final mods for gradient check, adjoint,...
2656    
2657    checkpoint42
2658      Fixed AD-related problems:
2659    o Store directives up-to-date with re-arranged Adams-Bashforth
2660      (mainly thermodynamics.F)
2661    o New store directives for multi-dim. advection schemes
2662      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2663      * new common block and key passkey
2664      (mainly gad_advection.F)
2665    o Modified store directives for split of dynamics/thermodynamics
2666      for the case ALLOW_KPP
2667    o Cleaned argument list for timestep_tracer.F
2668    
2669    checkpoint41
2670    o re-formatted/added comments in prologues of key subroutines
2671      to work with protex
2672    
2673    checkpoint40
2674    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2675    o added FLT (floats) package from Arne along with demo. experiment
2676    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2677      implementation of forward-in-time forcing terms
2678    o more mods for non-linear free-surface including new variable
2679    o modified multi-dim method to work on cube
2680    o bug fix in KPP (from DM)
2681    
2682    checkpoint40pre9
2683    o added DST advection schemes
2684    o fix MPI bug on SGI's
2685    o modifications for non-linear free-surface
2686    o fixed conditionals for fixed flow/passive tracer only mode
2687    o added tension/strain form of stress tensor
2688    o changes to commenting of arguments for TAF/TAMC
2689    o added/updated many matlab scripts
2690    o added multi-dimensional advection method for tracers
2691      
2692    checkpoint40pre8
2693    o new package rw/
2694      Added method for dumping intermediate local arrays:
2695      mdsio_writetile - same as mdsio_writefield except works from inside
2696                        bi,bj loop
2697      mdsio_writelocal - same as mdsio_writetile except works for local
2698                         arrays
2699      write_local_r? - higher-level wrapper for mdsio_writelocal
2700      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2701      Example given at end of mom_vecinv.F that dumps some local arrays.
2702    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2703      control flux-form versus vector invariant code.
2704      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2705      or genmake -DISABLE ...
2706    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2707      (additional storing is now needed for case vecinv;
2708      currently nothing implemented to switch this storing off
2709      in case fluxform is used since no CPP flag available).
2710    
2711    checkpoint40pre7
2712    o bug fix in dynamics.F
2713      calc_viscosity called before k=1,Nr loop.
2714    o added some #ifdef's ALLOW_PASSIVE_TRACER
2715    o cleaned initialisations in ctrl_map_ini
2716      related to TAF
2717    
2718    checkpoint40pre6
2719    o split dynamics into thermodynamics & dynamics
2720    o corresponding split of calc_diffusivity into
2721      calc_diffusivity, calc_viscosity
2722      (kpp_calc_diff, kpp_calc_visc).
2723    o Added diffkr, kapgm to control variables
2724    o bug fix in gmredi_slope_limit for ldd97
2725    
2726    checkpoint40pre5
2727    o proper initialization of Adams-Bashforth time stepping
2728      + uses forward step for very first step of model (iter=0)
2729    o re-generated *all* output since almost all output is modified by this
2730      change (sorry but we've been putting this one off for about 2 years)
2731      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2732        *not* regenerated since they are already out of date and I don't
2733        want to create the impression that they are suddenly working.
2734    o removed KAP stuff for DEC's
2735    o modified/added many .cvsignore files in */code and */input
2736    o added new expt "solid-body.cs-32x32x1"
2737      + this uses an alternative form of ini_curvilinear_grid.F which
2738        is not necessarily any better than the current one...
2739    
2740    checkpoint40pre4
2741    o added re-initialisations of utrans,vtrans,rtrans in
2742      calc_common_factors which are crucial for TAF.
2743    o extended iMin,jMin range for calc_common_factors,
2744      calc_diffusivity
2745    o added option ALLOW_PASSIVE_TRACER
2746    o a few minor updates and fixes
2747    
2748    checkpoint40pre3
2749    o created calc_gtr1.F for gad package
2750    o split the_main_loop and re-introduced forward_step
2751    o some recomputations of nIter0 for TAMC
2752    
2753    checkpoint40pre2
2754    o Updated to latest branch of AJA, JMC
2755    o Added gradient check package
2756    o Added routines for passive tracer handling
2757    o Added carbon sequestration sensitivity experiment
2758    
2759    checkpoint39
2760     o Modifications and fixes to support TAMC
2761       (mainly missing or wrong directives)
2762     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2763       in addummy_in_stepping
2764     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2765     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2766     o Included following packages:
2767       cal: calendar
2768       exf: external forcing
2769       ecco: essential routines to control use of cal, exf
2770             (NB: this is not the full ECCO environment)
2771     o disabled some packages by default in genmake
2772    
2773    checkpoint38
2774     o see notes_c37_adj.txt
2775     o corrected wrong layer index in external_forcing_t
2776     o replaced the_main_loop/forward_step by the_main_loop
2777     o removed forceoutput from write_state
2778       (replaced criteria for initial/final state)
2779     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2780    
2781    checkpoint37
2782     o mdsio.F routine split and packaged in pkg/mdsio
2783       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2784        used unless genmake -disable=mdsio)
2785     o allow a more precise surface-geopotential gradient for the atmosphere
2786       taking into account the change in space of Alpha (=1/rho) at the surface.
2787     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2788       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2789     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2790       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2791       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2792     o Time-Average diagnostics defined as a pseudo package "timeave".
2793     o pickup files : old pickup (before c35) did not work with new code (c35
2794       and after) unless activating 2 commented lines in initialise-varia.
2795     o Non-Hydrostatic pickup file Pb fixed.
2796     o bug with Rigid-lid version (since c35) fixed.  
2797    
2798    checkpoint36
2799     o implement Crank-Nickelson barotropic time-stepping
2800     o recover Time-Average diagnostics
2801     o fix Pb in checkpoint (PR#19)
2802     o AIM become a standard package ; clean unused CPP_kees
2803    
2804    checkpoint35
2805     o subtantial rewrite of dynamics.f
2806     o allows staggered time-stepping
2807     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2808     o added bottom drag (linear + quadratic)
2809    
2810    checkpoint34
2811     o Modified exchange routines for correct reverse simulation.
2812     o Added verification output to comply with bug fix in impldiff.F
2813       as of c33 (exp2, natl_box).
2814     o Corrected store directives in dynamics.F
2815     o Corrected array boundaries in impldiff.F
2816     o Corrected array dimensions in gmredi.
2817       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2818     o Added routine GLOBAL_SUM_INT to global_sum.F
2819     o Added mdsio_gl.F for ECCO purposes.
2820    
2821    checkpoint33
2822     o Fixed bug in lower BC in impldiff.F
2823     o Fixed confusion about units of forcing arrays in FFIELDS.h
2824       namely Fu,Fv,Qnet,Qsw,EmPmR:
2825       - Removed verification/natl_box/code/external_fields_scale.F
2826         (did not differ from that in model/src)
2827       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2828         (see FFIELDS.h for description)
2829       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2830         kpp_calc.F and kpp_transport_t.F
2831       - Removed model/src/external_fields_scale.F and calls to it
2832       - verification/natl_box uses flux data with "atmospheric" sign so
2833         a special version of external_fields_load.F is used to
2834         change the data as it's read in. This way, the arrays
2835         have the right units and signs at all times tha a user could
2836         possibly use them.
2837     o Corrected genmake to delete a temporary file during configuration
2838    
2839    checkpoint32
2840     o Scaling of forcing fields moved from external_forcing.F to
2841       external_fields_scale.F, called directly after loading fields.
2842     o Surface relaxation terms added to surface tendency fields in
2843       extra subroutine.
2844     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2845       fields.
2846     o Changes in GMRedi to comply with packaging structure.
2847     o Modifications and bug fixes in KPP package.
2848     o Verification experiment for KPP added (verification/nat_box/)
2849    
2850    checkpoint31
2851     o Packages interface brought in line with defined standard
2852       -> new routines packages_...F
2853       -> changes in initialise_fixed.F, initialise_varia.F
2854       -> enables initialisation interface for ECCO package
2855     o Rescaling of external forcing fields immediately after read
2856       (removed from external_forcing.F)
2857       -> new: surface_fields_scale.F
2858       -> affects ini_foorcing.F, external_fields_load.F
2859     o Computation of surface tendencies before tendency updates.
2860       -> new: external_forcing_surf.F
2861     o Change of variable names useGMRedi, useKPP, useECCO
2862     o Further changes in dynamics.F, impldiff.F for TAMC
2863     o Tested for experiments 0, 2, 4.
2864       - not yet tested for GMRedi.
2865       - not yet tested for KPP.
2866    
2867    checkpoint30
2868     o Updates for OBCs
2869     o New experiment for test OBCs (internal_wave)
2870     o New output.txt in verification/exp4/results/
2871     o Updates for KPP: calculation of viscosity corrected, new variables
2872       kpp_dumpFreq and kpp_taveFreq
2873     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2874       and entry for T90 in genmake
2875    
2876    checkpoint29
2877     o packaged KPP and GM/Redi
2878    
2879    checkpoint28
2880     o Corrected initialization of hFacMin for difference vertical coordinates
2881     o Modified calculation of partial cell thickness to more robust algorithm
2882     o config_summary.F: replaced write_1D_... by write_0D_...
2883       read_write.F: added subroutines write_0D_...
2884     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2885       included some initialisations required for TAMC.
2886     o routine calc_isoslopes: modified sqrt computation to make it
2887       differentiable for zero argument.
2888     o routines dynamics, impldiff:
2889       included store directives and tape key computations required for TAMC.
2890     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2891    
2892  checkpoint27  checkpoint27
2893   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
2894     formulation works properly with variable resolution.     formulation works properly with variable resolution.

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