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revision 1.47 by heimbach, Tue Aug 21 16:38:41 2001 UTC revision 1.705 by gforget, Sat Jul 15 01:23:19 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 ecco, option to compute cost for total ssh (mean+anom)
8    o consistent with addition of ptracer and ssh in pkg/profiles
9    o profiles: adding ptracer and ssh
10    o testreport: change multi-test output-file name
11      (from output.txt.{name} to output.{name}.txt)
12    o profiles: now ok for mutli-threaded case
13    o seaice: add 4 parameters for different advection schemes for area,
14      (effective) seaice thickness, enthalphy, and snow height. Their default
15      is the standard parameter SEAICEadvScheme
16    o calc_gw:
17     - add cosFacU in zonal viscous flux (harmonic.visc.).
18     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
19       of tutorial_plume_on_slope.
20    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
21    o calc_gw: true flux-form, account for horizontal grid spacing.
22      update rotating_tank results, but not plume_on_slope (affected at
23      truncation level, 11 digits).
24    
25    checkpoint58l_post
26    o calc_gw:
27     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
28     - remove side-drag for now (need to fix it); update plume_on_slope results.
29     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
30    o commit code to make SST/SSS weights spatially variable
31      (based on either variable in-situ or variable initial T/S weights)
32    o pkg/ecco:
33      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
34        now based on horizontally varying weights wthetaLev, wsaltLev
35      * cost_averagesflags now returns year indices in addition to day, month
36      * sflux balance is performed on annual basis
37        (sflxumm, sfluxmm2, bal_sfluxmm)
38      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
39        including separate counting and multipliers
40    o pkg/rbcs
41      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
42    
43    checkpoint58k_post
44    o testreport:
45     - always build in dir. "build" (if not there, mkdir build instead of building
46       & running in input)
47     - run in dir run (if it exists), in build otherwise.
48     - call prepare_run (if input/prepare_run exists)
49     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
50    o pkg/exf modifications to interpolation and rotation routines for more
51       reasonable treatment of North Pole singularity: for tracers North Pole
52       value is set to northernmost zonal-mean value, for zonal velocity it is
53       set to zero, and for meridional velocity it is set to northernmost value.
54    o pkg/exf/exf_check_range.F
55     - add tile index to diagnostics and move stop statement to the very
56       end of the routine.
57    o pkg/diagnostics: (diagnostics_main_init.F)
58      define title of isomorphic variables according to the current config.
59    o pkg/thsice with pkg/seaice dynamics:
60    - fix domain of computation (interior only, required for exf) and do exchanges
61    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
62    o towards a standard way of dealing with multi-threading in MONITOR
63      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
64    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
65       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
66    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
67    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
68    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
69       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
70    o tracer advection:
71     - clean-up and simplify calc_common_factors.F
72     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
73       advection subroutine (but still not used within DST advection S/R)
74    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
75    
76    checkpoint58j_post
77    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
78      from file (collects calls previously in FORWARD_STEP)
79    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
80    o adjoint store dir. adjusted accordingly
81    o genmake2
82      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
83    
84    checkpoint58i_post
85    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
86      on wind stress (SEAICEstressFactor defaults to 1.)
87    o Total number of Timers is finite (<=40): comment out 2 non-essential one
88      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
89    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
90      on CS-grid: no longer loosing mass.
91    o exf & curvilinear-grid: no longer modify longitude xC & xG.
92    o pkg/ggl90: fix sloppy output and fix a bug
93    o pkg/seaice: added SEAICEuseEVPpickup parameter
94      - Set to false in order to start EVP solver with
95        non-EVP pickup files when using SEAICEuseEVP
96      - fix sign error in diffusion in seaice_calc_rhs
97    
98    checkpoint58h_post
99    * Modifications for bottom topography control
100      o replace hFacC by _hFacC at various places
101      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
102      o add non-self-adjoint cg2d_nsa
103      o update autodiff support routines
104      o re-initialise hfac after ctrl_depth_ini
105      o works for 5x5 box, doesnt work for global_ocean.90x40x15
106    * Adding verification for 5x5 box (4-layer) bottom topography control
107    
108    checkpoint58g_post
109    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
110       used for mean seasonal cycle, mean diurnal cycle); add an example
111       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
112    o pkg/ggl90:
113      - add parameter (minimum surface kinetic energy)
114      - fix bug (avoiding division by zero)
115    o couple pkg/thsice to pkg/seaice:
116      - modify advection in seaice to accomodate new scalar fields to be advected
117      - only muliDimAdection scheme work with seaice/thsice
118      - mapping of thsice-variables to seaice-variables, back and forth
119      - does not break the verification experiments, but does not give the
120        desired results either
121    o pkg/seaice
122      - make (default) second order advection a bit less confusing?
123    
124    checkpoint58f_post
125    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
126      to pkg/seaice):
127      - new routines thsice_map_exf and thsice_get_exf provide the interface
128      - add an additional formal parameter to thsice_solve4temp
129    o pkg/exf:
130      - add new fields wspeed, snowprecip (to be able to couple to thsice)
131      - correct Stefan-Boltzmann constant
132      - new parameter for longwave surface emittance
133      - separate some stuff from exf_bulkformulae into new routines  
134        exf_radiation, exf_wind
135      - add new parameters and constants: longwave emissivity for ocean, ice
136        and snow, evaporation parameters over ice
137      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
138        either wind from stress or stress from wind
139    o pkg/thSIce:
140    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
141    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
142       and THSICE_CALC_THICKN
143    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
144    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
145      to make debugging easier.
146    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
147    o pkg/bulk_force:
148      - clean-up comments and parameters ;
149      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
150    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
151      generate new output for test-experiment: aim.5l_cs.thSI
152    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
153      testreport accordingly
154    
155    checkpoint58e_post
156    o SEAICE_CGRID adjoint done
157    o R_STAR adjoint implemented.
158      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
159      * need to sort out init. of h0facc, etc.
160    o Make pkg/profile fully independent of ecco,cost, etc. stuff
161      to be able to use it in pure forward.
162    
163    checkpoint58d_post
164    o upgrade simple test-experiment to tutorial example:
165     step.1: duplicate the experiment and (step.2) will remove the old copy.
166      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
167      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
168      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
169      tutorial_global_oce_biogeo    <- copy of dic_example
170      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
171      tutorial_plume_on_slope       <- copy of plume_on_slope
172      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
173      tutorial_global_oce_optim     <- empty for now (David ?)
174      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
175     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
176    o correct a sign problem in cost_scat.F
177    o obcs and ptracers: fix boundary conditions for advections schemes
178      with larger stencil
179    o thsice adjoint: start
180    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
181      completeness
182    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
183      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
184    o ptracers adjoint:
185      * avoid extensive recomputatations
186      * fix missing re-init. of gptr (missed by TAF)
187    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
188      me to turn off the excessive output to STDOUT that this package produces
189    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
190      and add those terms in Vector-Invariant formulation.
191    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
192      if the control period (xx_hfluxperiod etc) is 0
193    o in profiles pkg, clean routines and fix details
194    o in ecco pkg, reading ssh data:
195      fix problem in case the model does not start at iter0=0
196    o fix mnc-pickup/restart for ptracers
197    o new package prifiles:
198      code to compute profile-based cost by Gael Forget
199      (modifs in ecco, ctrl, autodiff)
200    o Benign bug fix in initialization (spotted by M. Mazloff) of
201      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
202    
203    checkpoint58c_post
204    o adjoint: finish NLFS adjoint and provide reference output in
205      verification/global_ocean.90x40x15/results_ad_nlfs
206    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
207      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
208      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
209      with SEAICE_CGRID defined.
210    o move calendarDumps from "data" to "data.cal" and clean-up the code
211      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
212    o add useEXF & useCAL flags (for now, set in hard-coded way)
213    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
214      (were missing in NH mode, and wrong in quasihydrostatic mode).
215      waiting for Chris updated version of calc_gw to add those CALLs.
216    o fix bug in quasihydrostatic S/R ;
217      add a test for this option: global_ocean.90x40x15.qshyd
218    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
219      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
220    o add on/off flag useOffLine for package OFFLINE
221    o seaice:
222      - modify advection so that it works also on the C-grid
223      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
224        problem in multi-tile runs with C-grid
225      - add flags for clipping ice velocities and/or masking solver forcing
226      - fix drag (ocean on ice) formulation and a bug that caused noise in the
227        C-grid solver
228      - added a few comments to seaice_diffusion.F
229      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
230        are now exclusive)
231      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
232        required re-ordering the code a little:
233       + make DAIRN global variable (defined in SEAICE)
234       + move computation of the viscosities eta and zeta into a new separate
235         routine (because I need to recompute them in seaice_ocean_stress.F)
236    
237    checkpoint58b_post
238    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
239      update output.txt of exp. aim.5l_cs.thSI
240    o various mnc cleanups and improvements:
241      + shrink lookup tables by factor of ~4
242      + better error reporting when running out of lookup space
243      + able to handle longer path/file names (up to 500 chars)
244    o adjoint:
245      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
246      - TBD: "hidden" mom_vecinv recomp. in dynamics
247    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
248     (allow to differentiate between forcing components using new integer flags:
249      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
250     and add new flag to put Dissipation tendency out of Adams-Bashforth.
251    o ecco
252      - enable trend removal from SSH anomaly obs.
253    o adjoint
254      - a fix for PmEpR when #undef EXACT_CONSERV
255      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
256      - try to fix "hidden" recomp. in forward_step for NLFS
257        (NLFS seems broken sometimes after I checked it in)
258    o seaice:
259     - add c-grid version of the dynamic solver:
260       + three new routines that are the c-grid substitute lsr, dynsolver
261         and ostres
262       + put a few fields that were local to dynsolver into global common
263         blocks, so that I can move the computation of stresses etc into
264         seaice_lsr (saves coding but may break the adjoint).
265     - replace more hardwired parameters by runtime parameters
266     - add ice masks that mask the rhs of the implicit solvers where there
267       is no ice (commented out in seaice_dynsolver, because i am not sure
268       if this works properly), eventually this should replace the clipping
269       of ice velocities in seaice_dynsolver to +/-40cm/s.
270    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
271      include it only where its needed
272    o move balancing of fluxes before the call of external_forcing_surf
273    o seaice:
274      - correct units of turning angles (now they are really in degrees)
275      - move computation of GWATX/Y out of main routine into dynsolver
276      - initialize GWATX/Y in seaice_init
277    o Apply mask on Fresh-Water flux (needed for SSH forcing).
278      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
279    o seaice: add runtime flags for turning angles (default to zero)
280    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
281      and trend from exf forcing and ctrl control adjustments
282    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
283      (since checkpoint57x_post)
284    o change the default rotation period to 86164.s = the Earth rotation
285    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
286      and based on a reference stratification. Tested within hs94.cs-32x32x5.
287    o seaice advection: add code for choosing between the default (2nd order
288      central differences) and multiDim advection schemes provided by
289      pkg/generic_advdiff
290    o seaice:
291      - removed all references to SEAICE_GRID.h fields from
292        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
293        (cubed-sphere configuration will change a little)
294      - grid computations in seaice_init are obsolete now.
295      - cleaned up code a little so that is easier to read (hopefully).
296      - added new (better?) discretizations of default advection and diffusion
297        (turn on with SEAICEuseFluxForm)
298      - replace 1 in 3d global fields by kSurface in growth.F
299      
300    checkpoint58a_post
301    o seaice:
302      - bug fix in advect.F
303    o shelfice:
304      - separate shelfice load anomaly from pload (breaks with time
305        dependent forcing), => introduce constant field shelficeLoadAnomaly.
306        Its default is 0., but it may be computed more cleverly from (unknown)
307        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
308        done offline. A good approximation of the pressure load anomaly is
309        necessary to avoid large initial adjustment processes underneath
310        deep-reaching shelfice.
311      - small fix in ISOMIP shelfice_thermodynamics
312      - add more sophisticated thermodynamics of Hellmer (1989), this is
313        now the default
314      - give a few constants more intuitive names
315    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
316      if bulk formulae are used in long integration (especially EmPmR). Turn
317      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
318      if balancePrintMean, the imbalance that is substracted is printed to
319      STDOUT.
320    o fix bug (typo) in obcs_apply_eta.F
321    o add a new package shelfice which enables us to model the circulation
322      underneath shelf-ice with draughts of hundreds of meters.
323     - works
324     - to do: + include improved thermodynamics
325              + check whether kSurfC (from model/inc/SURFACE.h) can be used
326                instead of new field kTopC
327              + can we use topoFile, Ro_surf and existing code in ini_depth.F
328                instead of new field R_shelfIce and new code in ini_depth.F
329                and ini_mask_etc.F?
330              + adjust vertical mixing schemes?
331    o seaice pkg:
332     - add a cpp-flag to include a simple formula for a salinity dependent
333       freezing point of sea water at the surface
334     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
335       meridional stresses are now different (and hopefully correct)
336    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
337       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
338       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
339    o pkg/diagnostics: add options and parameters for regional-statistics
340       diagnostics ; define regions by reading a region-mask from a file
341       (might add other options later)
342    o pkg/bulk_force:
343     - add option and parameters to use AIM surface-flux formulae.
344     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
345       others forcing fields (defined in PARM05, parameter file "data") are loaded
346       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
347     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
348     - use the right EXCH call for uwind,vwind (to work on CS-grid).
349     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
350       and parameters (note: calcWindStress replaces .NOT.readwindstress).
351     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
352    
353    checkpoint58
354    o add "--embed-source" option to genmake2 which, when the supporting
355      tools can be compiled (as determined by genmake2) will turn on the
356      embed_files package which then embeds the entire MITgcm source code
357      (*.[fFhc] + Makefile) used for the build within the executable
358      - requested by CNH but off by default
359      - adds a paltry <9MB to the mitgcmuv executable in most cases
360      - only writes the output when useEMBEDSRC in eedata is true
361    o clean up 3-dim. relaxation codes:
362      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
363      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
364      * Thanks to Tom Haine for testing!
365    
366    checkpoint57z_post
367    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
368      affects output (@ truncation level) of exp. plume_on_slope ; updated.
369    o fix the pickup behavior for obcs in combination with ptracers
370    o fix a bug in ptracers_external_fields_load
371    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
372      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
373    o transfered surface NH pressure to eta field (if exactConserv).
374    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
375         and update lab_sea output.txt file.
376    o completing 3-dim. relaxation code: additional term
377         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
378      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
379      * At compile time, in "EXF_OPTIONS.h" set
380          #define  ALLOW_CLIMTEMP_RELAXATION
381          #define  ALLOW_CLIMSALT_RELAXATION
382      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
383          tauThetaClimRelax3Dim = 15552000.0,
384          tauSaltClimRelax3Dim  = 15552000.0,
385      * 3 cases:
386          1) Use a constant-in-time 3-dim. field
387          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
388          3) Real-time relax. to time-evolving prescribed field
389    o Adding Laplacian-type smoothness constraint on
390      initial and boundary (forcing) controls (ic, bc)
391      * enable at compile-time via
392        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
393      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
394      * Absolute scale somewhat unclear so far
395      * no area weighting was included since no other cost term does so far
396    
397    checkpoint57y_post
398    First step for a NLFS adjoint
399    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
400    o new init. routines for calc_r_star, calc_surf_dr
401    o still need to deal with ini_masks_etc
402    o testreport seemed happy
403    checkpoint57y_pre
404    
405    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
406    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
407    o add new offset feature to offline pkg (plus minor cleanup)
408    o cfc fixes for final year of integration
409    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
410      be in GCHEM_OPTIONS).
411    
412    checkpoint57x_post
413    o fix testreport Pb in multiple test experiment.
414    o cleanup our namelist syntax in verification:
415      - make it more F95 standards compliant (some work still needed)
416      - allows the vast majority of our tests to work with gfortran
417    o Non-Hydrostatic:
418     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
419     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
420    o Allow to apply AB on T,S rather than on AB(gT,gS):
421     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
422     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
423       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
424     - need a "clever" read_pickup to restart from the other AB formulation
425    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
426    o remove some unused variables (reduces number of compiler warnings)
427    o adjoint
428      * Disable useVariableViscosity for adjoint for time being
429        (there are a number of extensive recomputations)
430      * Initialize certain variables needed for adjoint
431    
432    checkpoint57w_post
433    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
434                 fix the singleCpuIO RS version of MDSWRITEFIELD
435       and add a WARNING if using globalFiles=T with multi-processors.
436    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
437      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
438    o tracer advection scheme:
439      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
440       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
441       was not very convenient).
442      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
443       (further tests needed for the implicit DST & Flux-Limiter schemes).
444    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
445      and sRef for convenience, handy, when you want to initialize
446      ptracers in a large domain with a constant non-zero value. Also,
447      untangle ptracers_init.F a little.
448    
449    checkpoint57v_post
450    o change dome exp. to use variable viscosity in side-drag terms.
451    o remove all the files from the cfc_offline test since they are now
452      incorporated into tutorial_cfc_offline which has been producing
453      identical results for a few days of testing
454    o add new parameter: sideDragFactor to enable half-slip-side BC
455      and change side-drag S/R to use viscosity from mom_calc_visc
456      (can switch back by setting sideDragFactor=0.); affects results at
457      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
458       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
459    o vorticity & strain are now computed without masking, to account for
460      no-slip-side BC in variable viscosity calculation ; mask is applied
461      anyway later on, before computing advection/coriolis terms.
462    o modify exp4 to test new obcs support for reading from external files
463      and for passive tracers
464    o fix behavior of ptracers_monitor when monitor output is written to a
465      netcdf-file; still not independent of monitor.F (writes in the same
466      file).
467    o change default value of tRef (put a uniform, meaningful value for ocean
468      & atmos) and initialize sRef (was missing, as Martin mentioned).
469    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
470      to be proportional to enstrophy dissipation length.  Thus,
471       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
472      This is now consistent with Smagorinsky and with the manual.
473    
474    checkpoint57u_post
475    o OBCS and PTRACERS: add open boundary support for passive tracers
476      - either use homogenous (pseudo) v.Neumann conditions or prescribe
477        OB-values from file; this is not different from the way theta and salinity
478        are treated
479      - however, Orlanski-radiation conditions are not supported, and the model
480        will stop if you use pTracers and Orlanski at the same time.
481      - beefed up the rountine obcs_external_fields_load: now only those open
482        boundary values are overwritten with values from files for which there
483        are really files, otherwise the OB-fields remain untouched. This makes
484        it possible to use different OBs at different ends of the domain (as
485        with EXF)
486    o reduce number of exch calls in shap_filt (s2).
487    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
488      truncation level) 4/5 MLAdjust test results (11&12 digits match).
489    
490    checkpoint57t_post
491    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
492    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
493      same truncation, independent of the face number: affects affects several
494      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
495    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
496      note that biharmonic viscosity + no-slip was not tested in any experiment.
497    o fix bug in non-linear free-surf side-drag ; generate new output for
498      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
499    o make mnc honor the writeBinaryPrec flag for most kinds of output
500    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
501    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
502      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
503    o add brackets in multi-terms sum to get same truncation, independent of
504      the face number (manage to get exactly same value of gU,gV at the cs-edge)
505      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
506    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
507      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
508      a maximum grid-scale Reynolds number.  Also, changes all length calculations
509      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
510      Suggested values of viscosity parameters found in mom_calc_visc.
511      Many new viscosity diagnostics available.
512    
513    checkpoint57s_post
514    o Add clearing-house for viscosity calculations, mom_calc_visc and
515      correct numerous bugs in LeithD and Smagorinsky discretizations.  
516      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
517      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
518      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
519      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
520      The Strain-Tension form is now called with useStrainTensonVisc=.true.
521      ViscAhStrain and viscAhTension are now retired.
522    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
523    o In response to JMC's bug report, genmake2 now ignores any soft-links
524      that it finds in the *current* directory when searching for files.
525      Soft-links found in any other source directories will still work as
526      they did before.
527    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
528      a C routine to unlimit the stack size
529    o mnc-ify pkg/aim snapshot vars
530    o mnc-ify pkg/land as requested by Daniel
531    o various changes to mnc including:
532      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
533      - output can now be grouped so that all files within a group
534          change the ITER portion of their names in lock-step together
535      - can now read ("global") PER-FACE (in addition to PER-TILE) files
536          and works with both EXCH1 and EXCH2 (but needs more testing)
537      - writing works for all verification test cases w/ g77 on Linux
538    
539    checkpoint57r_post
540    o make MNC variable initialization happen earlier
541    o add diagnostics for (almost) each term of the momentum Eq.
542    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
543    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
544    o remove MINIMAL_TAVE_OUTPUT option ;
545      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
546    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
547      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
548    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
549    o add time-dependent SST, SSS control
550    o cost terms in ecco/ modularized (new cost_generic.F)
551    o cost_averages routines are modularized (new cost_averagesgeneric.F)
552    o new infrastructure for seaice model vs. obs misfits in seaice/
553      * driver from the_main_loop.F is seaice_cost_driver.F
554      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
555      * gradient check in Exp. 6a of natl_box_adjoint/
556    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
557      (see README file)
558    
559    checkpoint57q_post
560    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
561    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
562      - bug was reported by Jean-Michel and Ian Fenty
563    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
564      update exp. cpl_aim+ocn output.
565    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
566      Needed for high-res. runs with large global files
567      to be able to limit tapelev size
568    o Changed some tests for adjoint:
569      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
570      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
571      * global_ocean.90x40x15/ back to default 3-level checkpointing
572    o Modifications to enable scripted COMMON to MODULE conversion
573      * verification/OpenAD/code/ has necessary scripts and description;
574      * converts, compiles and runs successfully;
575    
576    checkpoint57p_post
577    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
578    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
579      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
580    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
581    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
582      (was already the case for dissipation with mom_vecinv,
583       and also the case for grad.PhiHyd when staggered-timeStep)
584      This will allow to put dissipation out-off the AB time-stepping.
585     Unfortunately, affects truncation error. Update output of exp. that "fails"
586      (cg2d matching number) and leave the others for later: front_relax(10),
587      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
588      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
589    
590    checkpoint57o_post
591    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
592      (2) its ready to be documented during the 20050801 DocFest
593    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
594      for ideal_2D_oce and lab_sea on linux_ia32_g77
595    o set to #undef CTRL_SET_OLD_MAXCVARS_30
596      in global1x1_tot/code_seaice_adj to access indices 32, 33
597      (worth another tag)
598    
599    checkpoint57n_post
600    o adding precip control xx_precip 32
601    o adding swflux control xx_swflux 33
602    o Replacing 10 forcing penalty cost routines by 1 generic.
603    o Implementing partitioning in time-mean and variable adjustment
604      for atmos. state.
605    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
606    o in natl_box_adjoint:
607      * updated exp 1 to 10
608        (but does not have time-mean vs. variable split results yet)
609    o updated global1x1/*_seaice_adj/
610      to incorporate latest changes
611    o enable useSingleCpuIO for mdsio vector routines
612      (applies in particular to tapelev I/O)
613    o removed inefficient K-loop in all active_file*control*.F
614    
615    checkpoint57m_post
616    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
617      and advect_cs (use EXCH-2 and standard cs-32 grid files).
618    o pkg/exch2: filling of face-corner halo regions is optional
619      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
620    
621    checkpoint57l_post
622     tag before updating tutorials (pre-release-2)
623    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
624       for output and interpolation of input fields onto model grid)
625    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
626       Affects results of exp. rotating_tank ; update output.txt.
627    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
628          and taking the square quantity and/or using a fraction-weight field.
629    o fix aim_diagnostics_init.F mate numbers.
630    o add mnc output capability to diagnostics/diagstat and update
631      our cvsignore files for the ACSII output generated
632    
633    checkpoint57k_post
634    o lab_sea now uses diagnostics package and provides a suite of
635      new EXF diagnostics output.
636    
637    checkpoint57j_post
638    o exf
639      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
640        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
641        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
642      * extended diagnostics output
643        - now includes all EXF variables
644        - hs, hl moved to common block
645        - separate S/R for diagnostics, called after ctrl vector is added
646        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
647        - EXFqnet contains true Qnet (i.e. includes qsw)
648      * updated verif. lab_sea, global_with_exf
649      * Rearranging hflux (exf_mapfields -> exf_getforcing)
650        to ensure that diagnostics sees a true EXFqnet
651    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
652    o diagnostics pkg: change pointers so that 1 diagnostic can be used
653      several times with different frequencies.
654    o mnc-ify the thsice package as requested by Daniel Enderton
655      - the monitor--MNC output needs work
656      - many attributes need to be added (most are currently blank)
657    o mnc-ify theaim_v23 package as requested by Daniel Enderton
658      - many attributes need to be added (most are currently blank)
659    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
660    o add Sadourny like discretization to the 4th.O vorticity advection scheme
661    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
662      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
663         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
664    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
665     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
666    
667    checkpoint57i_post
668    o Diagnostics package was changed: diagnostic allocation is now deactivated
669      by setting an empty file name in the namelist (used to be by setting 0 frequency)
670    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
671      add 1rst Order upwind vertical Shear.
672    o add a quick fix for A/B checkpointing in OFFLINE mode
673    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
674      end-run around the C/Fortran linking horror in eesup/src/timers.F
675    o added pkg/runclock: allows user to terminate run based on wall clock
676    o added non-hydrostatic scaling parameter: nh_am2
677    o pkg/my82: futile attempt to make results compiler-independent by adding
678      some "_d 0", etc. no effect.
679    o for mnc output, fill the 'T' coordinate var with myTime and create a
680      separate 'iter' variable for iteration count
681    o pkg/diagnostics:
682      add new capability: output of Global/Regional & per-level statistics ;
683      tested against monitor output (including land & thSIce) on various exp.
684    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
685    
686    checkpoint57h_done
687      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
688      data.diagnostics, data.gchem, data.ptracers) is done.
689    
690    o pkg/diagnostics: prepare for Global/Regional statistics.
691      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
692    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
693      and rename it: DIFFERENT_MULTIPLE
694    
695    checkpoint57h_post
696    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
697    o pkg/diagnostics: change output frequency, now in seconds (instead
698      of Nb of iterations). This requires to change data.diagnostics.
699    checkpoint57h_pre
700    
701    o in mnc, let the user create the output dir if both mnc_outdir_date
702      and mnc_outdir_num are false
703    o add fflags() to pkg/diagnostics which allows one to specify, on a
704      per-file basis, the file precision [default behavior is unchanged]
705    o added diagnostics to pkg/kpp, including computation of mixed layer
706      depth based on a temperature/density criterion
707    o updated verification/natl_box to test the new pkg/kpp diagnostics
708    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
709    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
710    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
711      not mnc -- this mistake was found by JMC and is now corrected
712    
713    checkpoint57g_post
714    o add Adams-Bashforth 3rd Order time stepping:
715      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
716      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
717    checkpoint57g_pre
718    
719    o make lambda[Theta,Salt]ClimRelax spatially varying
720      (default remains spatially uniform constant based on tau)
721    o added new control variables
722      * init. uVel, vVel, etanN
723      * lambda[Theta,Salt]ClimRelax
724    o separate masks used for ctrl_pack/unpack 'from write_grid' output
725      (suggested by G. Forget)
726    
727    checkpoint57f_post
728    o add parameter "baseTime" = model base time = time at iteration zero
729      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
730      account for baseTime shift
731    o move Coriolis arrays from PARAMS.h to GRID.h
732    checkpoint57f_pre
733    
734    o mnc-ifying the seaice package
735    o introduced an alternative length scale calculation for use in the limiting
736      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
737    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
738    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
739      as well as grad(vort3).  Made it compatible with both approximate form
740      for the cubed sphere and full form of these gradients.  Added flag
741      useFullLeith to select between approximate and full form.  
742    o add "d0" in getcon.F to reduce differences between compilers/platforms
743      update output.txt of exp. fizhi-gridalt-hs
744    o change port_rand funtion to allow to set the seed.
745    o fix obscure MNC bug involving conversion between reals and integers
746      - it caused no problems with certain (eg. gcc, ifc) compilers but the
747        new version is now more standards-compliant
748    o adjoint-related modifications
749      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
750      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
751      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
752    
753    checkpoint57e_post
754    o Adding eddy stress controls a la Ferreira et al.
755    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
756    
757    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
758      update output.txt of exp. fizhi-gridalt-hs
759    o add more "Z" dimensions and associated coordinate vars to MNC
760    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
761    o parameter calendarDumps: when set, approximate months (30-31 days) and years
762      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
763      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
764      months and years.  Requires pkg/cal.
765    o diagnostics: add pickup functionality
766      - off by default for backwards compatibility
767      - current version only uses MDSIO -- MNC will be added
768    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
769    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
770    
771    checkpoint57d_post
772    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
773    o modify verification/ideal_2D_oce so that it tests the creation of mnc
774      output from the diagnostics package
775    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
776    o make genmake2 more portable by using ".$FS" instead of ".f" for more
777      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
778    o add coordinate variables to the MNC output from the diagnostics package
779    o change MNC-flags default value: true when useMNC=TRUE
780    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
781      the ability (off by default) to read the grid information using MNC
782    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
783    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
784    o do snap-shot diagnostics at the middle of the time-interval (instead of
785      at the end).
786    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
787      new test for AIM with thSIce + slab-ocean
788    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
789    o move state variable diagnostics to the beginning of the time step ;
790      (note: still needs some work specially for snap-shot diagnostics)
791      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
792    
793    checkpoint57c_post
794    o Change testing option (-ieee) to get closer agreement between g77 & ifort
795    o generate new output.txt files on faulks with g77 & the new -ieee option
796    checkpoint57c_pre
797    
798    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
799      update output.txt of exp. global_ocean.90x40x15
800    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
801      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
802    o add saltFlux(+File) forcing capability with periodicExternalForcing
803    o allow to use pkg diagnostics for GM-Redi & ThSIce output
804    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
805    o improvements for the MNC output from DIAGNOSTICS:
806      - correct handling of the unlimitied dimension
807      - all dims now have associated coordinate variables
808      - variables located at U, V, and Corner ("Z") points are now written
809        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
810        *all* data points are output
811    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
812    o added pkg/seaice/seaice_monitor.F
813    o mdsio_readfield.F can now read files visible only to master MPI process.
814    o pkg/seaice: some test code for ice-modified ocean stress
815    o exf_getffields interpolation defaults to bilinear for all scalar forcing
816      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
817      spurious negative numbers for precipitation and humidity.  Will cause
818      some small numerical differences for integrations using pkg/exf/exf_interp.F.
819    o pkg/ctrl/
820      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
821        May be enabled via doPackDiag
822      *  introduce z-scaling of
823         + gradient (doZscalePack) and
824         + control (doZscaleUnpack)
825    o pkg/mdsio/
826      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
827      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
828    
829    checkpoint57b_post
830    o simplify options in diagnostics_fill arguments (remove weird combinations)
831    o fix MNC coordinate variables so that they now contain per-face index
832      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
833      general, EXCH2 grids are only aligned to a "local" coordinate system
834    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
835    o Implement instantaneous output within pkg diagnostics:
836      setting a negative frequency in data.diagnostics produces
837     "snap-shot" output (as opposed to time-average if freq > 0)
838    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
839      NOTE: change ptracer diagnostics name: use 2 characters to work with
840            more than 9 tracers. Add also diagnostics of advect & diffus flux.
841    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
842      becomes the coordinate variable for the 'T' dimension
843    o add CF-style coordinate variables to MNC
844      - just a first cut:  numbers are meaningless on the cubesphere and
845        missing along the T axis but otherwise it works!
846    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
847    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
848    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
849      this is based directly on what the model compute, so that the content of
850      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
851    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
852    o clean up build options files for SunOS, in particular
853      - remove -traditional from xmakedepend
854      - change -xarch=v9 to -xarch=native for f77
855      - restore use of make (not gmake)
856      - add CC=gcc if using g77
857    o changes per discussion of AM, JMC, & EH3 today:
858      - move redundant "grid" variables out of "state" -- in preparation of
859        creating proper CF-style coordinate variables and in recognition
860        that any/all grid variables can be easily copied (eg. w/NCO) from
861        the grid files into any of the other NetCDF files
862      - *always* output grid variables with MDSIO (this will eventually be
863        changed)
864      - output MNC grid file if useMNC is true
865    o every instance of _END_MASTER() has been found and replaced with
866      _END_MASTER( myThid ) in order to satisfy certain picky Sun
867      preprocessors
868    o re-arrange diagnostics pkg initialisation:
869     - allow each package to extend the available diagnostics list
870     - add some checking and fix small problems (multi-threaded, ...)
871     - new S/R diagnostics_fill (replace fill_diagnostics):
872       look through the short list of active diag. (instead of the long list)
873       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
874    
875    checkpoint57a_post
876    o this set of changes restores TAMC compatibility
877      tested for global_ocean.90x40x15 adjoint on trough
878      (what a pain)
879    
880    checkpoint57a_pre
881    o some modifs in tools/build_options for sunos
882    o call ctrl_pack for ctrl at end for optimcycle=0
883    
884    checkpoint57
885    o add horizontal bi-harmonic viscosity for vertical velocity
886      - new parameter viscA4W (defaults to viscA4)
887      - affects only non-hydrostatic code
888      - to be done: no-slip lateral boundary conditions
889    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
890    o implement Implicit Vertical advection for pTracers
891    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
892      (implemented also for implicit vertical diffusion & advection)
893    o OBCS: extend application of tracer open boundary conditions
894      to a strip beyond the boundary of width Olx/Oly
895    o add call monitor to TAF set of required calls (flow directives)
896      and include in natl_box_adjoint
897    o untangle a few ifdefs related to cost, ctrl, autodiff
898      untangel a few ALLOW_ECCO_OPTIMIZATION
899    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
900      (theta2, salt2 in ecco_cost_weights)
901    
902    checkpoint56c_post
903    o OBCS as control variables
904      - update ctrl_ad_diff.list, obcs_ad_diff.list
905      - remove balance of obcs controls from default
906      - fix index bug nobcs in ctrl_init
907      - fix dummy fields filen in ctrl_pack
908      - add dummy weights for obcs
909    o lsopt: comment out fort.94 output
910    o optim:
911      - remove unnecessary header files
912      - adjusted namelists
913      - add xerbla.F to Makefile
914    o exf:
915      - multiple modifications of exf_check_range
916      - unit change in exf_init_runoff from [m/year] to [m/s]
917    o mdsio:
918      - i/o-vector change debugLevel from debLevA to debLevB
919    
920    checkpoint56b_post
921    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
922      is called from DO_THE_MODEL_IO
923      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
924      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
925      - clean up PTRACERS_WRITE_TIMEAVE a little
926    o add another verification experiment that tests both the cfc-pkg and
927      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
928      reactive tendencies treated inline with regular timestepping
929    o testreport previously did a lousy job of comparing small numbers, so
930      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
931      implemented in the little c-progam tmp_cmpnum.c which is embedded in
932      testreport.
933    o ptracers_monitor: bug fix for MPI
934    
935    checkpoint56a_post
936    o GCHEM: finish reorganizating the package
937      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
938        (introduces another 3D-array for each passive tracer, but only if
939        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
940        gchemTendency is not needed because the timestep is done separately)
941      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
942      - GCHEM is now---more or less cleanly---separate from PTRACERS
943      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
944        so clear to me how that should be done in a general way.
945    o CFC: improve formatting of output in CFC_ATMOS
946    o PTRACERS:
947      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
948        that ALL experiments with ptracers enable can be checked. This makes
949        GCHEM_MONITOR obsolete.
950      - include a runtime parameter PTRACERS_monitorFreq that defaults to
951        monitorFreq
952      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
953    o add PTRACERS (PTR0[1-5]) to testreport output
954    o exf_check_range:
955      * default changed to .TRUE.
956      * will check values for niter0 if debLevA, every timestep if debLevB
957      * STOP in exf_check_range if 'out of range'
958      * range chosen generous to allow for potential extema
959      TBD: a version with stricter range
960           permitted range would be runtime parameters
961    o GMredi:
962      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
963      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
964      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
965    o GCHEM:
966      - move call to GCHEM_FORCING_SEP, so that it is now called before
967        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
968      - introduced a useGCHEM runtime flag and applied it everywhere.
969      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
970        this flag is now only visible within GCHEM-pkg routines.
971      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
972        be replaced by a 3D array that is computed before thermodynamics; for
973        this, the tracer ID iTracer had to be included into the parameter list
974        of ptracers_forcing
975      - set up forward_step to call gchem_forcing, that will replace
976        gchem_forcing_int in ptracers_forcing
977      - cleaning up
978    o small cleaning of exch2: remove files that are also in eesupp/src
979    
980    checkpoint56
981    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
982    o mnc: cleanup "full" files--fixes out-of-memory problem
983    o ECCO-GODAE
984      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
985      * fully merged and updated from SIO code
986        windstress sign change affects
987        - exf_inscal_[u/v]stress
988        - sign of xx_tau[u/v] adjustments
989        - signs in cost_scat
990      * ctrl_get_gen: avoid update of tau[u/v] for first few days
991      * natl_box_adjoint updated and compressed
992      * 2-level checkpoint switch added
993        (tested in EXP. 1 of natl_box_adjoint)
994      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
995    o SVD
996      * first complete, non-hacked version for SVD calculations
997      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
998        performed via direct access files admtlm_vector.it????
999        (via ctrl_[un]pack)
1000      * optimcycle is used for ARPACK iteration counter
1001        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1002      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1003        and add linear transforms where necessary
1004      * controls are initial/final SST, SSS (can be extended; need to check
1005        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1006    o mdsio: filename info to both stderr, stdout
1007    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1008      from sign change
1009    
1010    checkpoint55j_post
1011    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1012      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1013    o add consistent build directories and .cvsignore files to verification
1014    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1015    o make all subroutines 30 or less characters in length for certain older
1016      compilers to work (a thorough search only turns up two routines in
1017      pkg/ptracers)
1018    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1019      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1020    
1021    checkpoint55i_post
1022    o change arrays for total vertical diffusivity (2.D if explicit,
1023      3.D if implicit) ; each ptracer uses its own background value.
1024    o added mnc/NetCDF output capability to ocn_compon_interf
1025      - added bits to verification/cpl_aim+ocn so that it can run on
1026        ITRDA and other clusters without the mpirun "-wd" option
1027    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1028      configuration
1029    o give MNC the ability to create additional files rather than
1030      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1031      - the default is just less than 2GB which is a practical limit
1032        on many systems
1033    o Compute the non-local term using either KPP vertical diffusivity (=default)
1034       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1035    
1036    checkpoint55h_post
1037    o add verification test "vermix"
1038    o remove all the *_ioinc flags and replace with the single global
1039      outputTypesInclusive flag
1040    o allow to set a vertical profile of vertical diffusivity for T & S
1041    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1042    o useMNC moved from data.mnc to data.pkg
1043    
1044    checkpoint55g_post
1045    o Renaming carbon AD experiments to comply with testreport conventions
1046    o Updating adjoint of Held-Suarez hs94.1x64x5
1047    o Fixing directives for non-ECCO forward_step, after ECCO directives
1048      have been fixed to avoid recomp. of do_oceanic_phys
1049      Works well for global_ocean.90x40x15,
1050      but recomp. issue remains for carbon
1051    o Updating adjoint output for natl_box_adjoint after
1052      pkg/ecco has been modified (see taga c55d_post)
1053    
1054    checkpoint55f_post
1055    o rename to timeave_init_fixed
1056    
1057    checkpoint55e_post
1058    o some delicate re-shuffle of store directives to avoid one
1059      extra call of do_oceanic_physics
1060      affects ecco_the_main_loop.F, do_oceanic_physics.F
1061      checkpoint_lev1_directives.h
1062    o NB: this may break global_ocean adjoint temporarily,
1063      but it is clear how to fix it. Will do later, need this now.
1064    
1065    checkpoint55d_post
1066    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1067    o ecco_cost_weights is modified to 1x1 runs
1068    o modifs to allow observations to be read in as
1069      single file or yearly files
1070    o enable to read exf forcing fields as either
1071      single file or yearly files (flag useExfYearlyFields)
1072    checkpoint55d_pre
1073    
1074    o switch between 2-level and 3-level checkpointing
1075    o add ability of MNC to write local and "partial" (eg. 2D slices where
1076      the full 3D field is never actually stored) arrays to NetCDF files
1077      with the correct (that is, the complete multi-dimensional) set of
1078      array indicies
1079      - used in mom_vecinv() to write the diagFreq output
1080      - tested (demonstrated) in verification/aim.5l_cs
1081    o further mnc-ification
1082      - add verification/lab_sea to the list with mnc setups
1083      - fix undefined mnc v-names in cd_code
1084      - add kpp to mnc output (both snapshot and timeave)
1085    o non-hydrostatic code
1086      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1087        in calc_gw.F
1088      - defaults to viscAh
1089      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1090        friction or Leith) in non-hydrostatic mode, as long as there is
1091        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1092    o pkg/cost
1093      extend simple cost functions to treat time mean quantities
1094      (T,U,V) via cost_accumulate_state from cost_tile
1095    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1096        be 2 times larger than the minimum size the advection scheme requires.
1097        now get a perfect conservation of salt in advect_cs test-exp (updated)
1098    o GGL90 (Gaspar's TKE mixed layer)
1099      - add horizontal diffusion of TKE, requires exchanges in
1100        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1101        default. In OPA there is no horizontal diffusion of TKE but the
1102        mixing coefficients are computed from a horizontal average of TKE of
1103        6 points or so. I think that diffusion has a little more physical
1104        justification.
1105      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1106        was in vain)
1107      - mask tke-variable in ggl90_init
1108    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1109    o fix biharmonic diffusion on CS-grid.
1110    o more obcs stuff
1111      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1112        for reading boundary values. This routine is called from
1113        obcs_prescribe_read
1114      - updated obcs_check
1115      - changed sponge layer relaxation parameter units for days to seconds
1116      - turned off sponge layer by default
1117      - changed argument list of OBCS_CALC to myTime+deltaTclock
1118      - fixed about 35 bugs in obcs_external_fields_load
1119    
1120    checkpoint55c_post
1121    o obcs stuff
1122      - new runtime flags useOBCSprescribe, useOBCSbalance
1123      - re-arranged obcs_calc
1124      - moved exf_getobcs to obcs_prescibe_read
1125        obcs_prescibe_read is called after ORLANSKI stuff
1126        and independent of it (executable can contain all).
1127      - updated obcs_check
1128      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1129        These may be necessary only if tangential velocities are
1130        prescribed at OB, not sure, needs testing.
1131    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1132      which simplifies the calls and passes the ifc check-bounds test
1133    
1134    checkpoint55b_post
1135    o add a 2D scalar, Z location, exchange_2 routine.
1136    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1137      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1138      affects advect_cs results (for the wrong reason): update output.txt
1139    o use a more standard discretization for biharmonic viscosity ;
1140     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1141      affects results of dome set-up: update output.txt
1142    o fix gad_advection.F (CubedSphere part), back to version 1.23
1143    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1144    
1145    checkpoint55a_post
1146    o merged code to
1147      * prescribe/read time-dependent open boundaries
1148        (works in conjunction with exf, cal)
1149      * sponge layer code for open boundaries
1150      * each boundary N/S/E/W now has its own CPP option
1151        (healthy for the adjoint)
1152    
1153    checkpoint55
1154    o up-to-date adjoint of previous breaks
1155      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1156      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1157      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1158      - carbon: * remove tr1-related adjoint verification
1159                * add ptracer as control variable
1160    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1161      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1162    
1163    checkpoint54f_post
1164    o in verification/carbin/ remove experiment related to
1165      ALLOW_PASSIVE_TRACER (array tr1 etc)
1166      code_ad/ input_ad/ results_ad
1167    
1168    o add two new packages
1169      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1170        + subject to optimization (memory)
1171      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1172        + subject to reordering (many GOTOs in the original code)
1173        + so far opps is called for every (i,j) point, and then operates in
1174          the vertical; one may want to reorder the scheme in order operate in
1175          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1176          fields)
1177    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1178      - all verification tests compile and run with linux_ia32_g77
1179      - defaults are compatible with current input files--nothing
1180        should change if you were not previously using MNC
1181      - MNC output has been added in numerous places (eg. timeave)
1182        but there are still a few writes not yet do-able with MNC
1183        (this is in progress)
1184      - flags now allow for either/or/both use of MDSIO and MNC and
1185        documentation will soon follow
1186      - numerous small formatting cleanups for ProTeX
1187    o add version info (via BUILD_INFO.h) to MNC and stdout
1188    
1189    checkpoint54e_post
1190    o add two new packages
1191      - pp81 (Packanowski and Philander, 1981), Richardson number and
1192        stratification dependent mixing
1193      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1194      - these scheme operate in a similar manner as KPP (without ghat, of
1195        course), however there is only one diffusivity that is used for both
1196        temperature and salinity (and passive tracers)ç
1197    o add offline package
1198    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1199      provided by Stephanie Dutkiewicz
1200    o genmake2: add ability to search for C compilers and cleanup test output
1201      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1202    
1203    checkpoint54d_post
1204    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1205    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1206      leading to additional shift by 5 days each year of integration
1207       (i.e. leading to considerable offset over the years)
1208    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1209    o start with no AB and no initial filtering (staggerTimeStep):
1210      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1211    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1212      (external loading & cpl import/export stay in forward_step.F)
1213    o update coupling interface to work with new staggerTimeStep
1214    o change MDSIO ptracers_pickup.
1215    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1216    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1217    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1218    
1219    checkpoint54c_post
1220    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1221      this affects (truncation error) output.txt of test-exp:
1222       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1223    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1224    o change Qnet to always be the net heat flux, (+upward).
1225      affects (truncation error) output of natl_box exp.: updated
1226    o define the max number of passive tracers in PTRACERS_SIZE.h
1227    o start to test mnc routinely in exp0
1228    o add sea-ice loading (sIceLoad) as a new forcing field.
1229    
1230    checkpoint54b_post
1231    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1232       impressive on Altix and Opteron systems)
1233    o diagnostics can now write NetCDF files through the mnc package
1234    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1235    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1236    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1237      affects (truncation error) output of lab_sea & natl_box exp.: updated
1238    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1239    
1240    checkpoint54a_post
1241    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1242    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1243    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1244    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1245      + internal_wave (shift in writing cg2d_ini_res)
1246    checkpoint54a_pre
1247    
1248    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1249      - modified verification/lab_sea and natl_box_adjoint accordingly
1250    
1251    checkpoint54
1252    checkpoint53g_post
1253    o prepare splitting of thermodynamics: store convect.counter in common block
1254    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1255      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1256    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1257    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1258    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1259    o restore adjointability
1260    
1261    checkpoint53f_post
1262    o modifications that affect AIM experiment results (update output.txt):
1263      - no advection of S at top interface Nr (pkg/generic_advdiff)
1264      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1265    o AIM pkg:
1266      - include stability function into surf.Flux derivative relative to Tsurf
1267      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1268    
1269    checkpoint53e_post
1270    o merged cylindrical coord configuration
1271    o added rotating_tank experiment
1272    checkpoint53e_pre
1273    
1274    checkpoint53d_post
1275    o faulks upgraded: re-generate output.txt that have changed:
1276       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1277    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1278    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1279    o added Sadourny discretization of Coriolis
1280      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1281      - re-enabled use of omega3 (useAbsVorticity)
1282    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1283      vector-invariant equations
1284      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1285    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1286      hopefully without new bugs
1287      - still to do: biharmonic friction for non-hydrostatic w
1288    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1289    o regenerated output for global_ocean_ebm (using -ieee)
1290    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1291      of mom_common/
1292      - simple re-arrangement of instructions within computing loop
1293    checkpoint53d_pre
1294    
1295    checkpoint53c_post
1296    o new version of coupler for AIM+thSIce and Ocean models
1297     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1298     - land: change Evaporation of snow
1299     - aim with thSIce: fix bug in snow-precip.
1300    o changes to calc_gw.F
1301     - bug fix for w^2 term near the bottom boundary
1302     - (hopefully) improve the lateral slip boundary condtions for use with
1303        partial/looped cells
1304      - because the bug fix changes two verification experiments anyway (exp5
1305        and plume on slope), change the lateral boundary condition from half slip
1306        to the value of no_slip_sides
1307    o ebm package wasnt quite up to the parallel task. Fixed that.
1308    o Adjoint of EBM package + verification
1309      * TLM OK
1310      * ADM not sufficient accuracy yet (needs further testing)
1311    
1312    checkpoint53b_post
1313    o Commiting new energy balance model to repository
1314      * package is pkg/ebm
1315      * verif. is verification/global_ocean_ebm
1316      * references are in ebm_driver.F
1317    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1318    C        Global thermohaline circulation. Part I:
1319    C        Sensitivity to atmospheric moisture transport.
1320    C        J. Climate 12(1), 71-82
1321    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1322    C        Global thermohaline circulation. Part II:
1323    C        Sensitivity with interactive transport.
1324    C        J. Climate 12(1), 83-91
1325    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1326    C        Destabilization of the thermohaline circulation
1327    C        by atmospheric eddy transports.
1328    C        J. Climate 7(12), 1870-1882
1329    o Will need long integration testing.
1330    checkpoint53b_pre
1331    
1332    o created pkg/mom_common in preparation for variable viscosity code
1333    o renamed and split ini_mnc_io
1334    o pkg/land: only liquid water can diffuse or run-off
1335    o AIM using land: soil wetness availability account for snow
1336    o added printMapIncludesZeros to EEPARMS namelist
1337    
1338    checkpoint53a_post
1339    o restore TAMC compatiility for exf_constants.h
1340      (no usage of _d in .h)
1341    o Additional storing in KPP in an attempt to fix
1342      TAMC problem with adjoint of KPP code.
1343      (no success...)
1344      Identical code works fine with TAF.
1345    o Fixed verification/natl_box_adjoint experiments.
1346      Initial conditions for Experiments 4 and 5 are now
1347      set to "SEAICE_initialHEFF=0", which is more reasonable,
1348      and hence gives results closer to that of Experiment 2.
1349      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1350    
1351    checkpoint53
1352    o stable checkpoint with up to date adjoint
1353      TLM tests only run for 1st grdchk at the moment. Its unclear if
1354      this is a code problem or a problem with resetting code for g_
1355      variables that is being autogenerated wrong.
1356      Otherwise:
1357       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1358       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1359         are both still in chaos following their security messes.
1360    
1361    checkpoint52n_post
1362    o various build (mostly genmake2) changes including:
1363      - ability to build/run more easily within Cygwin and MacOS X
1364      - more complicated Makefiles with a stronger dependence on Gnu Make
1365    o pkg/seaice modifications
1366      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1367        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1368        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1369      - changed proxy for geostrophic velocity and updated
1370        verification/lab_sea/results/* accordingly
1371      - removed ADI dynamic solver from pkg/seaice
1372      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1373        they caused a segmentation fault under certain circumstances
1374      - removed unused field WATR
1375    o bug fix in exf-package:
1376      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1377         now reflect that.
1378    o small fixes in the cal-package:
1379      - set reference date to first of January for the 'model'-calendar
1380      - failing of cal_CheckDate in cal_FullDate now actually results in a
1381        warning
1382    o small modifications in exf-package to increase flexibility:
1383      - change climtempfreeze from a constant to a runtime parameter that
1384        is specified in data.exf_clim (default = -1.9)
1385      - introduce runtime parameter windstressmax (default = 2.0) that is
1386        specified in data.exf
1387    o fix in pkg/thsice:
1388      - update Evap (Tsf changes) to be consistent with Latent heat flux
1389      - maintain snow precipitation unchanged (even if Tsf >=0).
1390     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1391    
1392    checkpoint52m_post
1393    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1394      this does not change any of the results, because myIter=0 in swfrac always
1395      lead to jwtype=2 (the default anyway), but the call makes little sense
1396      as a default
1397    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1398    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1399      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1400    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1401    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1402    o extending useSingleCpuIO option to work with new exch2 I/O format
1403      - old-style, missing-tile I/O is still accessible by defining CPP
1404        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1405    o monitor package can write to NetCDF files and/or STDOUT
1406    o fix re-definition bug in MNC_GRID_INIT_ALL()
1407    o doc/api_reference added
1408      - a framework for building an API Reference Manual using all
1409        the "protex" comments embedded in the code
1410      - see pkg/generic_advdiff, pkg/mnc for examples
1411    o MNC:
1412      - make myThid the last argument for all subroutines
1413      - new default for the grid files: NO halos
1414      - add useMNC and other run-time flags
1415      - separate per-file-group handling of the unlimited dimension
1416      - early initialization of MNC w/ flags read at the eeboot stage
1417        and lookup tables set in initialize_fixed
1418      - write all MNC output to a freshly-created directory
1419    o thermodynamics sea-ice (thsice) is now tested with testreport.
1420    o test exp. advect_cs: use the standard cs32 grid ; update output.
1421    o Added functionality to grdchk:
1422      pick global i,j,k position (or nearest wet) where to perform check.
1423    
1424    checkpoint52l_post
1425    o new land formulation:
1426      a) use ground enthalpy as prognostic variable to ensure exact
1427         energy conservation.
1428      b) account for water temperature and for latent heat of freezing
1429         in all processes (rain, run-off, ground storage)
1430      c) compute surface and ground temperature implicitly.
1431    o aim_v23 modification for new land model:
1432      a) Treat separately land / ocean / sea-ice surface fluxes
1433         to allow implicit computation of land & sea-ice surface temp.
1434      b) add snow precipitation.
1435    checkpoint52l_pre
1436    
1437    o fix problem (when 1 tile is empty) in min/max monitor.
1438    o fix bug in timeAve (u,vZetatave in common block)
1439    o no restoring terms under ice for pkg/seaice
1440    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1441    o bug fix for pkg/seaice pickups
1442    o change MNC call locations and add coordinate attributes
1443    o mask vorticity at the corner ; affects global_ocean.cs output
1444    o fix ini_curvilinear_grid ; test CS experiments with mpi
1445    o aim.5l_cs: modify sea-ice fraction input file ; update output
1446    o exf: Adding simple range check routine for exf fields after read
1447    
1448    checkpoint52k_post
1449    o removed top-level directory "diags"
1450      - we migrated these functions to pkg/timeave a long time ago
1451    o fixed bug introduced in pkg/monitor
1452    o accuracy ctrlprec = 32 insuffient for gradient checks using
1453      averaged fields (I/O via cost_averages)
1454      -> use ctrl.h in active_file*.F to control I/O precision.
1455    o paramter list of CALL ADTHE_MAIN_LOOP
1456    o added initial do_the_model_io to ecco
1457    o set all ...Freq to zero after cost_final
1458      taveFreq, dumpFreq, pChkptFreq
1459    o MAIN and ECCO differentiability restored
1460    
1461    checkpoint52j_post
1462    o fix nchklev in tamc.h for global_ocean...
1463    o Bringing flow and store directives up-to-date
1464    o Really weird thing!
1465      call do_the_model_io from the_main_loop with parameters
1466      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1467      TAF places a faulty re-call of initialise_varia
1468      after cost_final call which should not be there!
1469    checkpoint52j_pre
1470    
1471    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1472      error messages
1473    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1474    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1475      debug output
1476    o modfied mdsio_writefield.F to handle non-global files under exch2
1477    o update AIM Cubed-Sphere exp (aim.5l_cs):
1478      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1479    o update AIM Equatorial Channel exp:
1480      use standard aim_v23 pkg and change the SST fields to be more realistic.
1481    o globalFile now works with exch2
1482    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1483      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1484    o limit timeave output for hi-res integrations
1485    
1486    checkpoint52i_post
1487    o removed CPP_EEOPTIONS.h from verification/*/code
1488    o updated the tiling for global_ocean_pressure
1489    checkpoint52i_pre
1490    
1491    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1492      the old pkg/aim).
1493    
1494    checkpoint52h_pre
1495    o shortened offending lines in exch2_send_rx?.template
1496    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1497    o genmake2: add build & execute test for NetCDF code
1498    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1499      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1500    o added useSingleCPUIO flag to monitor.F and mon_out.F
1501    o added temporary hack for sea-ice dynamics on the cube:
1502      metric terms are ignored and it is assumed that
1503      there is no sea-ice on cube faces 1, 2, 4, and 5.
1504    
1505    checkpoint52f_post
1506    o added exch2 cube routines to pkg/exch2
1507    o modified hs94.cs-32x32x5 to use it
1508    o added new grid files to hs94.cs-32x32x5
1509    checkpoint52f_pre
1510    
1511    checkpoint52e_post
1512    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1513      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1514    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1515      to work with implicit vertical advection and AB ;
1516    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1517    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1518     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1519    checkpoint52e_pre
1520    
1521    o fix bug in impldiff when Nr=1 or Nr=2.
1522    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1523    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1524    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1525      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1526    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1527    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1528    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1529    
1530    checkpoint52d_post
1531    o re-tiled many expts to allow comparison in multi-processor mode
1532      - updated output accordingly
1533      - changed hs94.128x64x5 to use intial T from file rather than use the
1534        random number generator
1535    o add infrastructure in model routines for fizhi and gridalt packages
1536    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1537    o changes to permit hi-res, cubed-sphere, configuration
1538      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1539      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1540      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1541        of surface winds for the cube
1542      (A verification experiment, based on global_ocean.cs32x15, but with
1543       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1544       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1545       complete with example surface forcing files and matlab scripts to look
1546       at the output and compare it with that of global_ocean.cs32x15.)
1547    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1548       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1549       to conform to the common rule.
1550    o check-in the first version of the coupler + interfaces for multi-components
1551       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1552       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1553       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1554       - ocean and atmos. share the same horizontal grid (no interpolation).
1555       - exchanges between component and coupler is done in forward_step
1556    o new verification experiment, cpl_aim+ocn:
1557       coupled ocean - AIM atmosphere on cs32 grid.
1558    
1559    checkpoint52d_pre
1560    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1561    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1562    
1563    checkpoint52c_post
1564    o Fixing OPTIONS files for use of exf:
1565      - ALLOW_ECCO not needed
1566      - ECCO_CPPOPTIONS.h should not be included from
1567        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1568        as has been the case in the past
1569      - All cal/exf related options are currently set in
1570        single header file. Should remain so until we
1571        agree on a consistent new policy.
1572    o Removed all CPP options for cal package.
1573      cal has no more CPP options.
1574    o modified STOREs in GAD_ADVECTION
1575    o corrected key comp. for passkey
1576    
1577    checkpoint52b_post
1578    o new version: "thsice" of thermodynamic sea-ice pkg:
1579     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1580     - modify fluxes but do not change theta directly;
1581     - light cleaning of bulk_force pkg (still needed with thsice).
1582     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1583       + output_thsice.txt to test thsice & bulk_force pkgs.
1584    o put back grid & coriolis monitor output.
1585    checkpoint52b_pre
1586    
1587    o call "do_the_model_io" at the beginning (=> dump initial state)
1588    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1589    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1590      (need info on NUMBER_OF_PTRACERS)
1591    o missing PTRACERS headers in some routines
1592    o default tamc.h in pkg/autodiff supposed to crash
1593      to ensure proper customization
1594    
1595    checkpoint52a_post
1596    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1597      - moved surfaceTendencyTice from pkg/seaice to main code
1598      - subroutine FREEZE_SURFACE now limits only surface temperature
1599        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1600        => new output.txt for global_ocean.cs32x15 & global_with_exf
1601      - keep the old version of FREEZE for backward compatibility;
1602        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1603      - corresponding modifs for TAF directives
1604    o added surface flux output variables to TIMEAVE_STATVARS
1605    o time-averaged output for pkg/ptracers
1606    o fix problem with ECCO-related divided adjoint
1607      snapshot file was missing some ad-variables,
1608      but no warning issued by TAF
1609    
1610    checkpoint52a_pre
1611    o some bug fixes for #undef REAL4_IS_SLOW
1612    
1613    checkpoint52 = ecco_c52_e35
1614    o after testing adjoints of checkpoint51u_post
1615    
1616    checkpoint51u_post
1617    o this is the post-merge tag of the ecco-branch
1618      (needs another clean checkout and re-testing)
1619    o various natl_box_adjoint configs and results
1620      but no input fields
1621    o obcs adjoint not yet merged!
1622    o adding ECCO global 1x1 and 2x2 degree configs
1623    o updated/extended some store directives for seaice
1624    o pkg/ecco now containes ecco-specific part of cost function
1625    o top level routines the_main_loop, forward_step
1626      supersede those in model/src/
1627      previous input data.cost now in data.ecco
1628      (new namelist ecco_cost_nml)
1629    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1630    
1631    checkpoint51t_post
1632    o this is the pre-merge tag of the ecco-branch
1633    
1634    checkpoint51s_post
1635    o cleanup: removed various obsolete #define-s
1636    o pkg/grdchk
1637      - renamed 'ph-grd 3' to 'grad-res'
1638      - merged from ecco-branch
1639        (remaining bug fixes for obcs gradient checks)
1640      - additional high-precision output for testreport
1641        (grep for 'precision_grdchk_result')
1642    
1643    checkpoint51r_post
1644    o cleaned up or removed CPP_OPTIONS.h files
1645    o updated results for some of the tests to reflect the new
1646      optfiles (-ieee: -O0 instead of -O3)
1647    
1648    checkpoint51q_post
1649    o cd_code:
1650      - moved cd_scheme.F -> cd_code_scheme.F
1651      - separate read_checkpoint from cd_code_ini_vars.F
1652      - separated cd_code part from write_checkpoint
1653      - updated AD_SOURCE, generated .flow
1654      - added CD_CODE_VARS.h to the_main_loop
1655      - Moving cd_code specific store dir.s to pkg/cd_code
1656    o ctrl package totally restructured
1657      - pack/unpack now optional and decoupled from
1658        xx_/adxx_ I/O
1659      - ctrl_pack/unpack cleaned
1660        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1661      - confined inclusion of AD_CONFIG.h to where necessary.
1662    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1663    
1664    checkpoint51p_post
1665    o create initial cd_code package
1666      - WARNING: the initialization of fields within packages
1667        is broken because INI_FIELDS (where READ_CHECKPOINT is
1668        called) is called *before* PACKAGES_INIT_VARIABLES.
1669        This seems to be backwards since
1670        1) its important to initially zero the entire field including
1671           the "halo" region
1672        2) zeroing needs to be done *before* reading pickup info
1673           and the pickup call might or might not happen in any
1674           particular run
1675      - this needs an overhaul for R2
1676    o cleanup verification/*/code/GMREDI_OPTIONS.h
1677    o cleanup testreport
1678    
1679    checkpoint51o_post
1680    o bringing AD-related verif's up to date with genmake2
1681      - carbon/
1682      - global_ocean.90x40x15/
1683      - hs.94.1x64x5/
1684      - (front_relax/ )
1685    o (more) consistent directory structure for AD-related verif.'s
1686    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1687    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1688    o bug fix in find_alpha.F for MDJWF:
1689      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1690        change rho -> rho-rhoConst
1691      - replace call find_rho to find_rhonum
1692    o initialisation of rFlx extended to full array (required by TAF)
1693      and shifted to thermodynamics
1694    o removed PTRACERS.h in ptracers routine
1695    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1696    o Correcting initialisations for fVerU, fVerV.
1697    o helping TAF to recognize dependency on kUp for
1698      fVerU, fVerV
1699    o Replacing delZ by delR in pkg/ctrl/
1700    checkpoint51o_pre
1701    
1702    o undid all of cp51 pending some cleanups and discussion
1703    o added the [#include "AD_CONFIG.h"] statement to all files that need
1704       it for adjoint/tl #defines
1705     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1706     o removed tools/genmake since it no longer works
1707    
1708    checkpoint51n_post
1709    o modifications to make FREEZE flux visible to pkg/kpp
1710      - moved surfaceTendencyTice from pkg/seaice to main code
1711      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1712      - subroutine FREEZE now limits only surface temperature
1713        (this means new output.txt for global_ocean.90x40x15,
1714         global_ocean.cs32x15, and global_with_exf)
1715    o added surface flux output variables to TIMEAVE_STATVARS
1716    
1717    checkpoint51n_pre
1718    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1719    o added [#include "AD_CONFIG.h"] to all files that use the following
1720      defines:
1721      - ALLOW_ADJOINT_RUN
1722      - ALLOW_TANGENTLINEAR_RUN
1723      - ALLOW_ECCO_OPTIMIZATION
1724    
1725    checkpoint51m_post
1726    o incorporating changes to get TAMC/TAF working in genmake2
1727      - added new TAMC/TAF targets to the Makefile
1728      - various cleanups related to package handling
1729      - these changes should have no impact on the forward model
1730    
1731    checkpoint51l_post
1732    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1733     - faster algorithm for cal_addtime.F
1734     - higher precision arithmetic, where needed
1735     - pkg/exf *startdate variables changed from calendar date to
1736       model integration time
1737    
1738    checkpoint51l_pre
1739    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1740    o enable to apply restoring on S & T only in a latitude band.
1741    o update output (external_forcing_surf modif. change truncation errors)
1742       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1743    
1744    checkpoint51k_post
1745    o change default to: useNHMTerms=.FALSE.
1746     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1747       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1748     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1749        exp1, ideal_2D_oce
1750     - change data file of oceanic exp (leave the results unchanged for now)
1751       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1752    o set gravitySign automatically according to the vertical coordinate used
1753      (and change sign: back to "logical" value: +1 when R increases downward)
1754    o added an include barrier to the default CPP_OPTIONS.h and
1755      removed the #include "PACKAGES_CONFIG.h" from it
1756    o fix a bug in mom_fluxform (from chk51j_post)
1757    
1758    checkpoint51j_post
1759    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1760    o adjusted some flow directives (dynamics, thermodynamics)
1761    o added cubed-sphere case to test cost function
1762    o heckpoint_lev?_directives.h now include
1763      pkg-specific directives, whenever those are enabled.
1764    o Moving pkg-specific flow directives to corresponding pkg
1765      Moving pkg-specific differentiation list to corresponding pkg
1766      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1767      ---> conventions are
1768           - pkg_ad.flow
1769           - pkg_ad_diff.list
1770           - pkg_ad_check_lev?_dir.h
1771    
1772    checkpoint51i_post
1773    o merge of the branch-genmake2
1774      - knowingly breaks the older genmake
1775      - automatic generation of all ALLOW_${PKG_NAME} defines
1776      - new testreport supersedes older testscript
1777    o large number of package inclusion and header cleanups
1778    checkpoint51i_pre
1779    
1780    o new output for adjoin of global ocean vector invariant
1781    o fix for checkpoint of thermodynamic seaice and bulk_force
1782    o Steph gchem various cleanups
1783    
1784    checkpoint 51h_pre
1785    o fixed some single quotes
1786    o modify gchem pkg to be more versatile
1787    o modifications to clean up dic pkg
1788    o add pkg/cfc
1789    
1790    checkpoint51g_post
1791    o provide links for ARPACK and ADM*TLM
1792    o start removing verification/vero/
1793    o update AD-related stuff
1794      (in particular some IF-statements in model/src/ routines)
1795    o adding to verification/global_ocean.90x40x15/ adjoint of
1796      vector invariant setup
1797    
1798    checkpoint51f_post
1799    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1800    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1801      of tracer Green's fucntions for ocean inversion project.
1802    
1803    checkpoint51f_pre
1804    o Added on-the-fly spatial interpolation capability
1805        "USE_EXF_INTERPOLATION" to pkg/exf.
1806      - This is a temporary Cartesian-grid hack until
1807        the super-duper ESMF coupler becomes available.
1808      - See verification/global_with_exf/README for usage example.
1809      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1810        flags and modified pkg/seaice accordingly.
1811    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1812        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1813        non-local transport term.
1814    
1815    checkpoint51e_post
1816    o pkg/mom_vecinv:
1817      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1818      - add time-ave diagnostic of vorticity advection.
1819    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1820    o atmospheric geopotential: - include water vapor effect;
1821                                - use p^kappa in p* scaling.
1822    o land pkg: read initial state from files.
1823    o AIM : add stratospheric drag in the upper level
1824    
1825    checkpoint51d_post
1826    o change function ILNBLNK (=> last non-blank char.) to return zero
1827      (instead of the string length) when the string. char is empty
1828    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1829    o modif's to restore TAMC compatibility
1830      - avoid "_d" constructs in PARAMETER declarations
1831      - avoid interrupting lines by comment lines
1832    o Use cluster local disks for purely local I/O
1833      vs. globally visible disks needed for ctrl stuff
1834      (merged from ecco-branch)
1835      - new active_file_loc... and mdsio_..._loc routines
1836      - affected packages: autodiff, ctrl, grdchk, mdsio
1837    
1838    checkpoint51c_post
1839    o introducing integer flag debugLevel
1840      - debLevZero: suppress all output
1841      - debLevA: standard
1842      - debLevB: equivalent to current debugMode=.TRUE.
1843    o introducing pathname variable mdsioLocalDir for mdsio
1844      that can be specified at runtime
1845      (relevant for cluster I/O to local disk)
1846    `
1847    >>>checkpoint51b_post
1848    adjoint of ptracers
1849    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1850    o extended state in checkpoint_lev?, etc.
1851    o alternative ctrl/cost with tr1 or ptracer
1852    o new comlev1_bibj_ptracers
1853    o new ptracers.flow
1854    o made ptracers_forcing same as external_forcing_s
1855    o added verification for adjoint with ptracers
1856      - adm. grdchk fail so far
1857      - tlm. grdchk OK
1858      - checked tapelev/comlev recomputations: OK
1859    <<<checkpoint51b_pre
1860    
1861    checkpoint51a_post
1862    o added code for biogeochemistry package
1863      - new pkgs: dic, gchem
1864      - new subroutine in ptracers
1865    o modify code for biogeo packages
1866      - in model/src and pkg/ptracers
1867    
1868    checkpoint51
1869    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1870      - autodiff, ctrl, exf, grdchk, seaice
1871      kept separate packages
1872      - cost, ecco, obcs
1873    o updating verification/internal_wave, verification/lab_sea
1874      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1875    
1876    checkpoint50i_post
1877    o Preparing next differentiable checkpoint and sync
1878      of MAIN vs. ecco-branch
1879      - 1st step: this one is differentiable
1880      - 2nd step: next(! not this) checkpoint will have updated packages
1881                  from ecco-branch)
1882    
1883    checkpoint50h_post
1884    o new package "land": provide surface BC for AIM.
1885    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1886    o AIM: use true log-P extrapolation for near surface temp (= as in
1887        F.Molteni paper) ; update aim.5l_cs output.
1888    o New variable in PARM03 for more flexible pickups
1889    o somewhat cleaned package initialisation sequence for
1890      ctrl/ cost/ ecco/ in packages_... routines
1891    
1892    checkpoint50g_post
1893    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1894      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1895      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1896        made the default because of faster convergence than ADI
1897    
1898    checkpoint50f_post
1899    o exf totally restructured
1900      - replaced all exf_set_ routines by one generic exf_set_gen.F
1901        and made sure it's still differentiable
1902      - split exf_getffields.F into new exf_bulkformulae.F
1903      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1904      - updated adjoint/makefile and relevant verif. accordingly
1905    
1906    checkpoint50f_pre
1907     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1908          + change Evap over land. (update aim.5l_cs output)
1909     o added missing .cvsignores and made uniform across expts
1910     o changed configuration of tidal_basin_2d expt
1911     o added pkg/debug functions for tracing code in fatal crashes
1912     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1913     o new fn in pkg/monitor to stop model if solution grows too big
1914     o removed lots of single quotes from comments
1915    
1916    checkpoint50e_post
1917    o make KPP work with PTRACERS
1918     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1919       nearly a copy of kpp_transport_s
1920     - there is no analogue to SurfaceTendencyS, so I have to use
1921       gPtr(of the surface layer) instead
1922    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1923    checkpoint50e_pre
1924    
1925    checkpoint50d_post
1926    o change kpp output from multiple-record state files to single-record state
1927      files analogous to write_state.F
1928    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1929      analogous to the cg2d-related output.
1930    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1931      so that writing to internal file fn (with length 512) fails.
1932    checkpoint50d_pre
1933    
1934    checkpoint50c_post
1935    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1936    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1937    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1938    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1939    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1940    
1941    checkpoint50c_pre
1942    Merging from release1_p13:
1943    o bug fix for pkg/seaice dynamic solver
1944    o Added SEAICE_initialHEFF to pkg/seaice
1945    
1946    checkpoint50b_post
1947    o store u*,v* in gU,V instead of in guNm1,gvNm1
1948    o in order to put the momForcing out of the Adams-Bashforth:
1949      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1950      to timestep.F
1951    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1952    o re-generate output for highly sensitive test-exp:
1953       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1954    
1955    checkpoint50b_pre
1956    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1957    o corrected CPP option mismatch in exf_Bulk... functions for case
1958      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1959    
1960    checkpoint50a_post
1961    o Bug fix for merging between c50 and KPP.
1962      ikey was passed from thermodynamics to kpp_calc via
1963      common block rather than being recomputed in kpp_calc,
1964      in contradiction with new key itdkey.
1965      New key ikppkey created, and tamc.h headers updated.
1966    
1967    checkpoint50
1968    - 2nd step of merge with ecco-branch:
1969      merge changes in ecco-branch back into main trunk
1970    - bug fix in find_alpha
1971    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1972    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1973    - merged some sliced AD support routines
1974    
1975    checkpoint49
1976    merged from ecco-branch:
1977    o exf:
1978      - Enable initialisation of forcing fields to constant
1979        (runtime) values.
1980      - in exf_getffields.F
1981        Reduce i-/j-loop to interior domain, discarding overlaps.
1982        That also fixes wrong TAF-key computations for key_1, key_2
1983        with bulf formulae.
1984      - exf_init.F modify #ifdef for exf_init_evap
1985      - exf_getffieldrec.F, ctrl_getrec.F
1986        The following INT-usages are not safe:
1987          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1988          fldcount = int(fldsecs/fldperiod) + 1
1989        and were modified.
1990    o autodiff: checkpoint_lev...
1991      - updated storing for bulk formulae (some arrays were missing)
1992      - added state for seaice package
1993      - synchronized with main branch
1994    o DIVA:
1995      Modif.s in
1996      - the_main_loop.F
1997      - the_model_main.F
1998      and added cost_final_restore.F cost_final_store.F
1999      o With these changes, it is possible to fully separate
2000        the first forward run to compute the cost function (mdthe_main_loop)
2001        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2002        into separate model executions.
2003        This enables better tuning of DIVA to given queue sizes.
2004      o Loss of cost function value in consecutive DIVA runs is
2005        fixed by storing to 'costfinal' file.
2006      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2007        beginning/end of adjoint integration is accounted for.
2008      The current changes apply to TAF-1.4.26.
2009      TAF has one remaining bug, requiring one manual change
2010      (see MITgcm manual).
2011    o cal: synchronized between MAIN and ecco-branch
2012    
2013    checkpoint48i_post
2014    o Changes to restore differentiability of code w.r.t. previous tag
2015      (mostly adding new routines to make list and replacing
2016      pressure by totPhiHyd).
2017    o Updated and merged grdchk package
2018      - has both ADM and TLM checks
2019      - works for single- and multi-proc.
2020      - output cleaned
2021      - worked successfully for parallel DIVA
2022    o genmake:
2023      - Adding -platform=SP4
2024      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2025    o Modif. for DIVA:
2026      ctrl_unpack should not be called in intermediate DIVA interval.
2027      (similar thing would apply for active files such as
2028      tbar, sbar, psbar, which should not be reinitialised;
2029      only relevant for ecco-branch)
2030    
2031    checkpoint48h_post
2032    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2033    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2034    o Added SEAICE_initialHEFF to pkg/seaice
2035    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2036    
2037    checkpoint48g_post
2038    --- EOS:
2039    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2040      store total Potential in totPhyHyd for diagnostics & EOS.
2041    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2042    --- Pressure/geopotential gradient:
2043    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2044    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2045      ( changes results of global_ocean_pressure )
2046    o NLFS + z-coord.: add eta*Rho' contribution.
2047    o accurate phiHyd when using interface-W at the middle between 2 centers
2048     ( changes results of ideal_2D_oce )
2049    o includes r* 2nd term in potential gradient.
2050    
2051    checkpoint48f_post
2052    Merging from release1_p12:
2053    o Modifications for using pkg/exf with pkg/seaice
2054      - improved description of the various forcing configurations
2055      - added basic radiation bulk formulae to pkg/exf
2056      - units/sign fix for evap computation in exf_getffields.F
2057      - updated verification/global_with_exf/results/output.txt
2058    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2059      (SBO) core products, including oceanic mass, center-of-mass,
2060      angular, and bottom pressure (see pkg/sbo/README.sbo).
2061    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2062      to avoid negative values in shallow regions.
2063      - updated verification/natl_box/results/output.txt
2064      - updated verification/lab_sea/results/output.txt
2065    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2066    o Added useSingleCpuIO option (see PARAMS.h).
2067    o Updated useSingleCpuIO option in mdsio_writefield.F to
2068      work with multi-field files, e.g., for single-file pickup.
2069    o pkg/seaice:
2070      - bug fix in growth.F: QNET for no shortwave case
2071      - added HeffFile for specifying initial sea-ice thickness
2072      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2073    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2074      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2075    o pkg/seaice:
2076      - adjoint-friendly modifications
2077      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2078    
2079    checkpoint48e_post
2080    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2081    o dynamics: change definition of computational domain & adapt mom_fluxform
2082      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2083    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2084        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2085        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2086        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2087        inverted_barometer solid-body.cs-32x32x1
2088      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2089    
2090    checkpoint48d_post
2091    o in preparation for r*:
2092     a) use pre-computed gradient of hydrostatic potential:
2093        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2094     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2095        => affects results of glob_oce_pressure (different truncation error)  
2096      update output.txt of ideal_2D_oce & global_ocean_pressure
2097    
2098    checkpoint48d_pre
2099    o in preparation for r*:
2100      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2101      pass the 2 comp. of the grad. as arguments to momentum S/R.
2102      but for the moment, only used if it does not change the results.
2103    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2104    
2105    checkpoint48c_post
2106    Modifications in treatment of initial flux forcing controls
2107    to avoid extra storing of flux fields.
2108    
2109    checkpoint48c_pre
2110    o Added tidal_basin_2d experiment (currently 1D!)
2111    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2112    
2113    checkpoint48b_post
2114    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2115     (modification to pressure gradient not yet implemented)
2116    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2117      (for U & V) that are used for vertical advection of momentum.
2118    
2119    checkpoint48a_post
2120    o In preparation for r*, use temp. array to compute vertical transport
2121       in flux-form momentum pkg. => change results of few test-exp.
2122      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2123                        lab_sea, natl_box & plume_on_slope
2124    
2125    checkpoint48
2126    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2127    
2128    checkpoint47j_post
2129    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2130    o moved adexch from forward_step to addummy_in_stepping
2131    o added exch in ctrl_map_...
2132    o aveFreq.=0. at end of cost_final to avoid overwrite in
2133      reverse checkpointing loop
2134    o Yet more changes in gmredi:
2135      * adgmredi_calc_tensor
2136        avoiding all recomputation of gmredi_slope_limit
2137      * adgmredi_x/y/rtransport
2138        added flag for excessive storing to avoid recomp. of
2139        u/v/rtans, dTdx/y/z
2140        -> this is not really necessary and very memory-consuming
2141      * adgmredi_slope_psi:
2142        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2143      * gmredi_slope_limit
2144        re-activated full calculation of taperfct for case 'ac02'
2145    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2146    
2147    checkpoint47i_post
2148    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2149    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2150      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2151    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2152    o gmredi: fix few bugs.
2153    
2154    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2155    This will be a good checkpoint to plug into the ecco-branch.
2156    o few modif.'s to get latest version adjointed
2157      (mainly kick out code in ini_linear_phisurf)
2158    o modif's to run adjoint with exactConserv
2159    o case GM_BOLUS_ADVEC should be cleaned
2160      S/R gmredi_slope_psi should be cleaned
2161    o verification/carbon now has exactConserv=.TRUE.
2162    
2163    checkpoint47g_post
2164    o time-average AIM output: becomes independent from statvars time-average
2165      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2166    o After TAF bug fix:
2167      Tested adjoint of gmredi package.
2168      Tests were done with checkpoint47 rather than with latest
2169      checkpoint47f_post since the latter is broken for the adjoint
2170      verification/carbon/ contains both ADM and TLM gradient checks.
2171    Here they are, before they get changed/lost/stolen.
2172    Mostly modif.'s to fix numerical sensitivities.
2173    Gradient checks OK for
2174    - GM_taper_scheme:
2175      * clipping
2176      * ac02
2177      * linear
2178      * glw91
2179      * dm95
2180      * ldd97
2181    - GMREDI_OPTIONS:
2182      * GM_VISBECK_VARIABLE_K
2183      * GM_NON_UNITY_DIAGONAL
2184      * GM_EXTRA_DIAGONAL
2185      * GM_BOLUS_ADVEC
2186    in conjunction with data.gmredi parameters to be checked in
2187    in a few minutes under verification/carbon/code/
2188    
2189    checkpoint47f_post
2190    Merging from release1_p10:
2191    o modifications for using pkg/exf with pkg/seaice
2192      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2193        and SEAICE_EXTERNAL_FLUXES
2194      - pkg/exf CPP options EXF_READ_EVAP and
2195        EXF_NO_BULK_COMPUTATIONS
2196      - usage examples are Experiments 8 and 9 in
2197        verification/lab_sea/README
2198      - verification/lab_sea default experiment now uses
2199        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2200    
2201    checkpoint47e_post
2202    o created a tag prior to creating a branch
2203    
2204    checkpoint47d_post
2205    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2206      at the bottom boundary had an erroneous half slip boundary condition
2207    o added bottom drag and no slip boundary condition capabilities to
2208      oceanic pressure coordinates code
2209    o added new verification experiment global_ocean_pressure, this experiment is
2210      also described in the tutorial section of the manual
2211    checkpoint47d_pre
2212    
2213    checkpoint47c_post
2214    o Added a verification experiment for a global cubed-sphere ocean run
2215      -  verification/global_ocean.cubed32x32x30
2216      -  uses pkg/therm_seaice and pkg/bulk_forcing
2217    
2218    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2219    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2220      when using P-coordinate; only implemented for atmospheric config.
2221    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2222      NOTES: requires option NONLIN_FRSURF to be "#define".
2223    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2224    
2225    checkpoint47b_post
2226    Merging from release1_p9:
2227    o pkg/seaice
2228      - removed GOTO's and added taf directives
2229      - double precision constants to reduce the g77 (Linux)
2230        to F77 (SGI) differences reported in release1_p8
2231    o tools/genmake
2232      - added SGI options
2233    o verification/testscript
2234      - updated to that of checkpoint47a_post
2235    o verification/global_ocean.90x40x15/input/eedata
2236      - modified for SGI f77 compatibility
2237    o verification/lab_sea
2238      - added description of sea-ice model
2239      - added missing matlab routines
2240      - added test of thermodynamics parallelization
2241    
2242    checkpoint47a_post
2243    o new pkg: aim_v23
2244     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2245       for now, keep the same surface forcing as before.
2246     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2247     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2248     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2249    o add diagnostic of surface correction term in monitor output
2250    
2251    o bulk_force and therm_seaice
2252    - Two packages:  bulk_force (Bulk forcing)
2253      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2254    - Earlier integration from Stephaine Dutkiewicz
2255      and Patrick Heimbach.
2256    - Two ifdef statements for compile time,
2257       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2258    
2259    checkpoint47
2260    differentiable version of checkpoint46n_post
2261    o bug fix in quasihydrostaticterms
2262    o * "clean" adjoint code (in terms of extensive recomputations)
2263        can now be obtained for all GMREDI options (i.e. for
2264        - GM_VISBECK_VARIABLE_K
2265        - GM_NON_UNITY_DIAGONAL
2266        - GM_EXTRA_DIAGONAL
2267        - GM_BOLUS_ADVEC )
2268      * However, wrong gradient check problem remains unsolved.
2269      * New CPP options have been introduced for different
2270        tapering schemes
2271    o external_fields_load now part of differentiation list
2272    o pressure needs multiple storing;
2273      would be nice to have store_pressure at beginning or
2274      end of forward_step, e.g. by having phiHyd global (5-dim.)
2275      (NB: pressure is needed for certain cases in find_rho,
2276      which is also invoked through convective_adjustment).
2277    o recomputations in find_rho for cases
2278     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2279    o #define ATMOSPHERIC_LOADING should be differentiable
2280    o ini_forcing shifted to begining of initialise_varia
2281    o Incorporating QNVS line search routines into MITgcm
2282      (this is separate code, and therefore not under pkg)
2283      lsopt/, optim/
2284    o Updated verification/carbon/
2285      - #define GM_VISBECK_VARIABLE_K
2286      - GM_taper_scheme    = 'ldd97'    
2287    
2288    checkpoint46n_post
2289    Merging from release1_p8:
2290    o verification/natl_box:
2291      updating new external_fields_load routine
2292    o New package: pkg/seaice
2293      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2294      The sea-ice code is based on Hibler (1979-1980).
2295      Two sea-ice dynamic solvers, ADI and LSR, are included.
2296      In addition to computing prognostic sea-ice variables and diagnosing
2297      the forcing/external data fields that drive the ocean model,
2298      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2299      The implied surface heat flux is then stored in variable
2300      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2301      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2302      non-local transport term.  Because this call precedes model
2303      thermodynamics, temperature under sea-ice may not be "exactly" at
2304      the freezing point by the time theta is dumped or time-averaged.
2305      N.B.: fairly large differences in accuracy occur across
2306            different platforms/compilers; comparison between
2307            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2308            generated output gives:
2309       T           S           U           V
2310      C D M    c        m  s        m  s        m  s        m  s
2311      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2312      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2313      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2314    
2315      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2316    o GAD:
2317      - generated new common blocks to account for call of
2318        same gad routines with differing traceridentities
2319        (needed to modify tracerIdentity indices in GAD.h)
2320      - generated separate common blocks for case useCubedSphereExchange
2321        (Department of Futurology)
2322      - parameter lists to gmredi_?transport: added tracerIdentity
2323      - added new key indices to tamc.h
2324    o external_fields_load:
2325      - added this routine to TAF list
2326      - needed to make some common blocks global and additional storing
2327        along the same lines as exf package (checkpoint_lev?_directives.h)
2328    o exf:
2329      updated external forcing package
2330      - bug fixes carried over from ecco-branch
2331        (missing OBCS_OPTIONS.h in two routines)
2332      - enable easy to use "no forcing".
2333      - added exf I/O for atmospheric loading
2334      - added exf I/O for runoff data
2335      - transfered scaling between exf <-> MITgcm to exf namelist
2336    o Adding new verification experiment global_with_exf.
2337      This verification experiment is almost identical to the
2338      global_ocean.90x40x15 experiment, except that it uses
2339      the exf (and cal) package instead of the
2340      external_fields_load routine (cf README file).
2341    
2342    checkpoint46m_post
2343    o modified testscript to return -- when there are no lines of "%MON" output
2344    o added new flag "quasiHydrostatic" for QH mode
2345      and new routine quasihydrostaticterms()
2346    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2347      New routine: mom_u_coriolis_nh()
2348    o fixed sign of non-hydrostatic metric terms in u and v equations.
2349      Depend on correct sign of gravitySign.
2350    o added work.pc* to .cvsignore in aim directories using ifc
2351    o introduced flag for controllin non-hydrostatic metric terms
2352    o removed gravitySign from PARM04
2353    o switched to g77/ifc from pgf77 in aim experiments
2354    
2355    checkpoint46l_post
2356    o made convective adjustment work with pressure coordinates:
2357     - changed the direction of k-loop in convective_adjustment.F for the
2358       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2359     - adjusted the reference pressure k-index in convective_adjustment.F
2360     - adjusted the convection condition in convect.F (in analogy to
2361       calc_ivdc.F)
2362     - convective_adjustment no longer computes anything on the halos
2363     - removed the warnings about negative salinity from find_rho.F and
2364       find_alpha.F; instead the new routine look_for_neg_salinity, called
2365       at the beginning of find_rho, find_alpha, and find_beta, does a
2366       check of the entire slice, if CPP-option
2367       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2368    checkpoint46l_pre
2369    
2370    checkpoint46k_post
2371    o fixed the verification/global_ocean.90x40x15 experiment:
2372     - new bathymetry (the world according to A., JMC, and M.)
2373     - new initial fields and forcing fields (*.bin files)
2374     - new POLY3.COEFFS (for the next release one should switch to a full
2375       equation of state: JMD95P or MDJWF)
2376     - fixed several errors and redundancies in the data file
2377     - experiment uses looped cells
2378     - added matlab directory with diagnostic scripts for plotting of output
2379    
2380    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2381     - read AIM physics parameters from a file (data.aimphys)
2382     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2383    
2384    checkpoint46j_post
2385    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2386    o move wVel computation at the end of the time step, in S/R integr_continuity
2387    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2388    o update timeave pkg for wVel diagnostic.
2389    checkpoint46j_pre
2390    
2391    checkpoint46i_post
2392    o Clean up AIM package (and keep the results unchanged):
2393      include CPP_OPTION and use IMPLICT NONE in all routines ;
2394      declare all the variables _RL ; use _d 0 for all numerical constants.
2395      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2396    
2397    checkpoint46h_post
2398    o cleaned up the use of rhoNil and rhoConst.
2399      - rhoNil should only appear in the LINEAR equation of state, everywhere
2400        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2401        and the dynamical equations are all divided by rhoConst
2402    o introduced new parameter rhoConstFresh, a reference density of fresh
2403      water, to remove the fresh water flux's dependence on rhoNil. The default
2404      value is 999.8 kg/m^3
2405    o cleanup up external_forcing.F and external_forcing_surf.F
2406      - can now be used by both OCEANIC and OCEANICP
2407    checkpoint46h_pre
2408    
2409     Added code to convert surface volume flux (fresh water) into
2410     a mass flux when using P coordinates in the ocean (OCEANICP).
2411     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2412    
2413    checkpoint46g_post
2414    o Include a new diagnostic variable phiHydLow for the ocean model
2415      - in z-coordinates, it is the bottom pressure anomaly
2416      - in p-coordinates, it is the sea surface elevation
2417      - in both cases, these variable have global drift, reflecting the mass
2418        drift in z-coordinates and the volume drift in p-coordinates
2419      - included time averaging for phiHydLow, be aware of the drift!
2420    o depth-dependent computation of Bo_surf for pressure coordinates
2421      in the ocean (buoyancyRelation='OCEANICP')
2422      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2423        Theta, Salinity, and Pressure in the parameter list. This routine is
2424        presently contained in find_rho.F. This routine does not give the
2425        correct density for 'POLY3', which would be a z-dependent reference
2426        density.
2427    o cleaned up find_rho
2428      - removed obsolete 'eqn' from the parameter list.
2429    o added two new verification experiments: gop and goz
2430      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2431    checkpoint46g_pre
2432    
2433    checkpoint46f_post
2434    o Enable tangent linear (forward mode) gradient checks:
2435      - extended active file handling to g_... files
2436      - added TANGENT_SIMULATION to theSimulationMode
2437      - extended grdchk package accordingly
2438    o added tangent linear setup in verification/carbon/code_ftl
2439    o added adjoint setup in verification/front_relax/code_ad
2440    
2441    checkpoint46e_post
2442    o Added new equation of state -> MDJWF
2443      - EOS of McDougall et al., 2002, JAOT, submitted
2444      - caveat: the equation of state is only valid for a smaller (more
2445        realistic?) range of values than JMD95P/Z and UNESCO
2446      - added masks to the calculation of pressure in store_pressure
2447      - added more check values for density in check_eos (ini_eos.F), some of
2448        the old check values are out of the range of the MDJWF-eos, so don't
2449        expect perfect matches for those
2450    checkpoint46e_pre
2451    
2452    checkpoint46d_post
2453    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2454      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2455      case of pressure coordinates. eosType='JMD95Z' in
2456      combination with buoyancyRelation='OCEANICP' now causes an error.
2457    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2458      in find_alpha/beta.
2459    checkpoint46d_pre
2460    
2461    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2462      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2463    
2464    checkpoint46c_post
2465    o Changes necessary for ocean in p-coordinates
2466     -  Added new buoyancy relation = 'OCEANICP'
2467     -  Added new parameters = gravitySign (this used to be contained inside
2468        the factor dRdZ which I added when we first switched to R coordinates).
2469     X GM/Redi is not compatible (yet)
2470     X bottom drag and no-slip need to be debugged.
2471    checkpoint46c_pre
2472    
2473    checkpoint46b_post
2474    o Added new equation of state -> JMD95Z and JMD95P
2475      - EOS of Jackett and McDougall, 1995, JAOT
2476      - moved all EOS parameters into EOS.h
2477      - new routines ini_eos.F, store_pressure.F
2478    o Added UNESCO EOS, but not recommended because it requires
2479      in-situ temperature (see JMD95)
2480    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2481      unesco.f to be used with POLY3
2482    checkpoint46b_pre
2483    
2484    checkpoint46a_post
2485    o Added (atmospheric) pressure loading
2486      - new field in FFIELDS.h, etc...
2487      - new cpp flag ATMOSPHERIC_LOADING
2488    o Changed hFacC to _hFacC in calc_phi_hyd.F
2489    o Added SHORTWAVE_HEATING to some files for consistency
2490    checkpoint46a_pre
2491    
2492    checkpoint46
2493    further merges from release1_p5
2494    o new ctrl package
2495      - adopted from ECCO environment to enable optimization
2496      - added Eliassen Palm fluxes to controls
2497    o added Eliassen Palm flux controls to gradient check package
2498    o cost package
2499      - Compatible with new ctrl package
2500      - added Eliassen Palm cost hooks
2501      - modif's of existing cost functions
2502    o Adjoint-related bug fixes in kpp:
2503      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2504      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2505    o autodiff package
2506      - flow directives:
2507        + new for S/R do_the_model_io
2508        + enhanced for S/R checkpoint
2509        + new gmredi.flow
2510      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2511        disable adcommon.h/g_common.h by default.
2512      - fixed problem for adjoint of global_max
2513    o modified verification/carbon/
2514    o New setup for adjoint of global_ocean
2515    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2516    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2517    o incorporated hooks for sponge layer code (external_forcing.F)
2518    
2519    checkpoint45d_post
2520    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2521    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2522      (affects plume_on_slope "cg2d" output)
2523    o add new parameter deltaTfreesurf for free-surface time stepping
2524    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2525    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2526    o change phiMin in exp1 (to agree with documentation)
2527    o add new flags:
2528     - T,S forcing inside/outside Adams-Bashforth
2529     - turn off temp,salt advection and/or forcing
2530     - for each tracer, define internal flag for multiDimAdvection & A-B
2531    o monitor: change definition of KE to check conservation of Energy
2532    
2533    checkpoint45c_post
2534    o Removed f90 comments ("!")
2535    o Modified initialisations to enable exf package for MITgcm
2536      (without invoking ECCO_PACKAGE).
2537    o modifications to gradient check package (Martin Losch)
2538      - enable centered differences
2539      - modified format of standard output
2540    
2541    checkpoint45b_post
2542    o cleaned exchange calls in cg2d
2543    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2544    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2545      to configure barotropic setup (Martin Losch)
2546    o moved some initialisations within bi,bj loop in dynamics
2547      (TAF flow dependency)
2548    o in initialise_varia, moved call packages_init_variables
2549      before convective_adjustment_init
2550      (corresponding adjustment of TAF tape initialisation).
2551    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2552    
2553    checkpoint45a_post
2554    o compute Rho over the whole domain (extend iMin,jMin indices)
2555    o specific exchange for X-slice domain (case Ny=1)
2556    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2557    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2558    
2559    checkpoint44h_post = checkpoint45
2560    o Fix to restore differentiability:
2561      place at which packages_init_variables is called in
2562      initialise_varia is crucial for reverse control flow.
2563    o modifications in GMRedi to enable stable adjoint
2564      (corresponding modif's in thermodynamics, dynamics)
2565    o added missing hook for sponge layer code in external_forcing
2566    o modified test cost functions
2567    o storing in gad_advection (plus removal of write(0,*)!
2568    o missing headers TR1.h added in convective_adjustment routines
2569    o errorMessageUnit set non-equal zero in eeboot
2570      (conflict on some platforms, e.g. IBM SP3)
2571    o modified carbon verif.
2572    
2573    checkpoint44h_pre
2574    o vertical grid option: allow to put the Interface at the middle between
2575      2 cell-centers ; replace delZ in pkg/kpp by drF.
2576    o GM Advective form: Tracers are advected using the residual transport (=
2577      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2578    
2579    checkpoint44g_post
2580    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2581      results) ; ifdef missing in thermodynamics.F
2582    
2583    checkpoint44f_pre,checkpoint44f_post
2584    o added PTRACERS package
2585      This allows an arbitrary number of passive tracers to be integrated
2586      forward simultaneously with the dynamicaly model.
2587      + Implemented so far:
2588        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2589        - I/O and checkpointing
2590        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2591      + Not implemented so far:
2592        - KPP
2593        - OBCS
2594      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2595        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2596        line in data.pkg.
2597      + This package is disabled by default since it increases storage.
2598    
2599    
2600    o testscript: added -cleanup option
2601    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2602                 b) enable to filter 2D fields.
2603    
2604    checkpoint44e_pre,post
2605    o re-wrote convective adjustment to use pre-calculated weights
2606      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2607      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2608      Original calls to convect() still in place.
2609    
2610    chkpt44d_pre,post
2611    o added missing EXCLUDE_MONITOR flags
2612    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2613      (incompatible typ in MIN/MAX expressions caused problems
2614      on IBM SP3)
2615    o in genmake added variable MAKEDEPEND
2616      plus resetting for case SunOS
2617    o added timer_stats.c routine for IBM SP3
2618    o removed variables in dynamics
2619    !!! I forgot to create tag chkpt44d_pre !!!
2620    !!! But chkpt44d_pre = chkpt44c_post    !!!
2621    
2622    o real fresh water flux implemented with non-linear free-surface.
2623    
2624    chkpt44c_pre,post
2625    o few fix (mask in shap_s2, EmPmR in external_field_load,
2626      USE_NATURAL_BCS in solve_for_P);
2627    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2628    
2629    checkpoint44b_pre/_post
2630    o merge of relevant stuff from the ecco-branch:
2631      - genmake: removed $S64 overwrite for case SunOS
2632      - pkg/exf: update and corrections for field swapping and obcs
2633      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2634                  harmonized between ECCO and MITgcm
2635      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2636                      updated checkpointing_lev... lists for obcs
2637      - model/src: minor changes in forward_step, plot_field
2638                   added directive for divided adjoint in the_main_loop
2639      - pkg/mdsio: added mdsio_gl_slice
2640    
2641    o check parameters & config (chkpt44a_pre,post)
2642    o OBC and NonLin_FrSurf.
2643    
2644    checkpoint44
2645    o fix bug in mom_vi_del2uv
2646    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2647    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2648    o update AIM experiments (NCEP input files)
2649    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2650    o added some stuff for AD
2651    
2652    checkpoint43
2653    o added two new advection tests
2654    o added global 4x4 degree ocean test
2655    o added test of H&S94 with free surface on cube
2656    o some final mods for gradient check, adjoint,...
2657    
2658    checkpoint42
2659      Fixed AD-related problems:
2660    o Store directives up-to-date with re-arranged Adams-Bashforth
2661      (mainly thermodynamics.F)
2662    o New store directives for multi-dim. advection schemes
2663      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2664      * new common block and key passkey
2665      (mainly gad_advection.F)
2666    o Modified store directives for split of dynamics/thermodynamics
2667      for the case ALLOW_KPP
2668    o Cleaned argument list for timestep_tracer.F
2669    
2670    checkpoint41
2671    o re-formatted/added comments in prologues of key subroutines
2672      to work with protex
2673    
2674  checkpoint40  checkpoint40
2675  o all changes of checkpoint40pre?  o moved calc_gs, calc_gt and calc_tr1 back to model/src
2676    o added FLT (floats) package from Arne along with demo. experiment
2677    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2678      implementation of forward-in-time forcing terms
2679    o more mods for non-linear free-surface including new variable
2680    o modified multi-dim method to work on cube
2681    o bug fix in KPP (from DM)
2682    
2683    checkpoint40pre9
2684    o added DST advection schemes
2685    o fix MPI bug on SGI's
2686    o modifications for non-linear free-surface
2687    o fixed conditionals for fixed flow/passive tracer only mode
2688    o added tension/strain form of stress tensor
2689    o changes to commenting of arguments for TAF/TAMC
2690    o added/updated many matlab scripts
2691    o added multi-dimensional advection method for tracers
2692      
2693    checkpoint40pre8
2694  o new package rw/  o new package rw/
2695    Added method for dumping intermediate local arrays:    Added method for dumping intermediate local arrays:
2696    mdsio_writetile - same as mdsio_writefield except works from inside    mdsio_writetile - same as mdsio_writefield except works from inside

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