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revision 1.127 by adcroft, Thu Jan 30 18:35:42 2003 UTC revision 1.739 by jmc, Thu Oct 26 19:11:09 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 use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
8      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
9      in natl_box (affects results @ truncation level: update output.txt)
10    o multi-threading and IO:
11      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
12      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
13        (needed to work with SingleCpuIO): tested in all verif. exp.
14    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
15      affects the results (but none of the verification test uses this scheme).
16    o Adding some pkg/diagnostics capability to pkg/seaice
17      (will certainly be subject to changes)
18    
19    checkpoint58q_post
20    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
21      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
22      high_res_cube configuration by 4% on Columbia.
23    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
24      add (in global_with_exf/code) a version of EXF_INTERP_READ without
25      dynamical allocation (seems to work in multi-threaded).
26    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
27      single CPU io) so that TAF does not have to see EESUPPORT.h
28    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
29    
30    checkpoint58p_post
31    o obcs: stop if obcs is used with useCDscheme = .true.
32    o shelfice:
33     - fix a sign error so that no slip at shelfice interface works
34     - remove stop for combination non-hydrostatic code and shelfice. That does
35       not mean, that the results are correct, but at least they are numerically
36       stable
37    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
38    o added adjoint exch routined for all exch*3d* routines
39      and updated flow directives
40    
41    checkpoint58o_post
42    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
43      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
44    o change controling S/R for writing pickup file (new S/R do_write_pickup)
45      and clean-up reading/writing of pickup files.
46    o fix local version of read/write pickup (NH part) in rotating_tank/code
47    o simplify EXCH interface:
48     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
49     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
50    o added the regrid package
51    o shelfice:
52     - add a simple boundary layer scheme to reduce noise
53     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
54    
55    checkpoint58n_post
56    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
57       local variable (not in common block).
58    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
59      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
60      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
61        to work with SingleCpuIO.
62    o add "_d 0" to real constant of pkg/cfc subroutines ;
63       update exp. cfc_exemple & tutorial_cfc_offline output files.
64    o multi-threading and IO:
65      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
66        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
67      - barrier before and after reading.
68      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
69      - avoid using MDS_WRITELOCAL for LAND pkg output.
70      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
71        common-block variables ; Allows multi-threading with master-thread IO.
72    o change default MAX_NO_THREADS from 32 to 4 ;
73      and stop cleanly when MAX_NO_THREADS is too small.
74    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
75    
76    checkpoint58m_post
77    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
78       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
79    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
80       keep global_ocean.90x40x15 (for AD testing) with former secondary test
81       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
82    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
83        add MITgcm_tutorials (= code + all the tutorials)
84    o ecco, option to compute cost for total ssh (mean+anom)
85    o consistent with addition of ptracer and ssh in pkg/profiles
86    o profiles: adding ptracer and ssh
87    o testreport: change multi-test output-file name
88      (from output.txt.{name} to output.{name}.txt)
89    o profiles: now ok for mutli-tiles case
90    o seaice: add 4 parameters for different advection schemes for area,
91      (effective) seaice thickness, enthalphy, and snow height. Their default
92      is the standard parameter SEAICEadvScheme
93    o calc_gw:
94     - add cosFacU in zonal viscous flux (harmonic.visc.).
95     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
96       of tutorial_plume_on_slope.
97    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
98    o calc_gw: true flux-form, account for horizontal grid spacing.
99      update rotating_tank results, but not plume_on_slope (affected at
100      truncation level, 11 digits).
101    
102    checkpoint58l_post
103    o calc_gw:
104     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
105     - remove side-drag for now (need to fix it); update plume_on_slope results.
106     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
107    o commit code to make SST/SSS weights spatially variable
108      (based on either variable in-situ or variable initial T/S weights)
109    o pkg/ecco:
110      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
111        now based on horizontally varying weights wthetaLev, wsaltLev
112      * cost_averagesflags now returns year indices in addition to day, month
113      * sflux balance is performed on annual basis
114        (sflxumm, sfluxmm2, bal_sfluxmm)
115      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
116        including separate counting and multipliers
117    o pkg/rbcs
118      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
119    
120    checkpoint58k_post
121    o testreport:
122     - always build in dir. "build" (if not there, mkdir build instead of building
123       & running in input)
124     - run in dir run (if it exists), in build otherwise.
125     - call prepare_run (if input/prepare_run exists)
126     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
127    o pkg/exf modifications to interpolation and rotation routines for more
128       reasonable treatment of North Pole singularity: for tracers North Pole
129       value is set to northernmost zonal-mean value, for zonal velocity it is
130       set to zero, and for meridional velocity it is set to northernmost value.
131    o pkg/exf/exf_check_range.F
132     - add tile index to diagnostics and move stop statement to the very
133       end of the routine.
134    o pkg/diagnostics: (diagnostics_main_init.F)
135      define title of isomorphic variables according to the current config.
136    o pkg/thsice with pkg/seaice dynamics:
137    - fix domain of computation (interior only, required for exf) and do exchanges
138    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
139    o towards a standard way of dealing with multi-threading in MONITOR
140      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
141    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
142       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
143    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
144    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
145    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
146       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
147    o tracer advection:
148     - clean-up and simplify calc_common_factors.F
149     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
150       advection subroutine (but still not used within DST advection S/R)
151    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
152    
153    checkpoint58j_post
154    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
155      from file (collects calls previously in FORWARD_STEP)
156    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
157    o adjoint store dir. adjusted accordingly
158    o genmake2
159      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
160    
161    checkpoint58i_post
162    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
163      on wind stress (SEAICEstressFactor defaults to 1.)
164    o Total number of Timers is finite (<=40): comment out 2 non-essential one
165      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
166    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
167      on CS-grid: no longer loosing mass.
168    o exf & curvilinear-grid: no longer modify longitude xC & xG.
169    o pkg/ggl90: fix sloppy output and fix a bug
170    o pkg/seaice: added SEAICEuseEVPpickup parameter
171      - Set to false in order to start EVP solver with
172        non-EVP pickup files when using SEAICEuseEVP
173      - fix sign error in diffusion in seaice_calc_rhs
174    
175    checkpoint58h_post
176    * Modifications for bottom topography control
177      o replace hFacC by _hFacC at various places
178      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
179      o add non-self-adjoint cg2d_nsa
180      o update autodiff support routines
181      o re-initialise hfac after ctrl_depth_ini
182      o works for 5x5 box, doesnt work for global_ocean.90x40x15
183    * Adding verification for 5x5 box (4-layer) bottom topography control
184    
185    checkpoint58g_post
186    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
187       used for mean seasonal cycle, mean diurnal cycle); add an example
188       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
189    o pkg/ggl90:
190      - add parameter (minimum surface kinetic energy)
191      - fix bug (avoiding division by zero)
192    o couple pkg/thsice to pkg/seaice:
193      - modify advection in seaice to accomodate new scalar fields to be advected
194      - only muliDimAdection scheme work with seaice/thsice
195      - mapping of thsice-variables to seaice-variables, back and forth
196      - does not break the verification experiments, but does not give the
197        desired results either
198    o pkg/seaice
199      - make (default) second order advection a bit less confusing?
200    
201    checkpoint58f_post
202    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
203      to pkg/seaice):
204      - new routines thsice_map_exf and thsice_get_exf provide the interface
205      - add an additional formal parameter to thsice_solve4temp
206    o pkg/exf:
207      - add new fields wspeed, snowprecip (to be able to couple to thsice)
208      - correct Stefan-Boltzmann constant
209      - new parameter for longwave surface emittance
210      - separate some stuff from exf_bulkformulae into new routines  
211        exf_radiation, exf_wind
212      - add new parameters and constants: longwave emissivity for ocean, ice
213        and snow, evaporation parameters over ice
214      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
215        either wind from stress or stress from wind
216    o pkg/thSIce:
217    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
218    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
219       and THSICE_CALC_THICKN
220    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
221    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
222      to make debugging easier.
223    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
224    o pkg/bulk_force:
225      - clean-up comments and parameters ;
226      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
227    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
228      generate new output for test-experiment: aim.5l_cs.thSI
229    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
230      testreport accordingly
231    
232    checkpoint58e_post
233    o SEAICE_CGRID adjoint done
234    o R_STAR adjoint implemented.
235      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
236      * need to sort out init. of h0facc, etc.
237    o Make pkg/profile fully independent of ecco,cost, etc. stuff
238      to be able to use it in pure forward.
239    
240    checkpoint58d_post
241    o upgrade simple test-experiment to tutorial example:
242     step.1: duplicate the experiment and (step.2) will remove the old copy.
243      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
244      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
245      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
246      tutorial_global_oce_biogeo    <- copy of dic_example
247      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
248      tutorial_plume_on_slope       <- copy of plume_on_slope
249      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
250      tutorial_global_oce_optim     <- empty for now (David ?)
251      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
252     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
253    o correct a sign problem in cost_scat.F
254    o obcs and ptracers: fix boundary conditions for advections schemes
255      with larger stencil
256    o thsice adjoint: start
257    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
258      completeness
259    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
260      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
261    o ptracers adjoint:
262      * avoid extensive recomputatations
263      * fix missing re-init. of gptr (missed by TAF)
264    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
265      me to turn off the excessive output to STDOUT that this package produces
266    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
267      and add those terms in Vector-Invariant formulation.
268    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
269      if the control period (xx_hfluxperiod etc) is 0
270    o in profiles pkg, clean routines and fix details
271    o in ecco pkg, reading ssh data:
272      fix problem in case the model does not start at iter0=0
273    o fix mnc-pickup/restart for ptracers
274    o new package prifiles:
275      code to compute profile-based cost by Gael Forget
276      (modifs in ecco, ctrl, autodiff)
277    o Benign bug fix in initialization (spotted by M. Mazloff) of
278      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
279    
280    checkpoint58c_post
281    o adjoint: finish NLFS adjoint and provide reference output in
282      verification/global_ocean.90x40x15/results_ad_nlfs
283    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
284      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
285      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
286      with SEAICE_CGRID defined.
287    o move calendarDumps from "data" to "data.cal" and clean-up the code
288      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
289    o add useEXF & useCAL flags (for now, set in hard-coded way)
290    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
291      (were missing in NH mode, and wrong in quasihydrostatic mode).
292      waiting for Chris updated version of calc_gw to add those CALLs.
293    o fix bug in quasihydrostatic S/R ;
294      add a test for this option: global_ocean.90x40x15.qshyd
295    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
296      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
297    o add on/off flag useOffLine for package OFFLINE
298    o seaice:
299      - modify advection so that it works also on the C-grid
300      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
301        problem in multi-tile runs with C-grid
302      - add flags for clipping ice velocities and/or masking solver forcing
303      - fix drag (ocean on ice) formulation and a bug that caused noise in the
304        C-grid solver
305      - added a few comments to seaice_diffusion.F
306      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
307        are now exclusive)
308      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
309        required re-ordering the code a little:
310       + make DAIRN global variable (defined in SEAICE)
311       + move computation of the viscosities eta and zeta into a new separate
312         routine (because I need to recompute them in seaice_ocean_stress.F)
313    
314    checkpoint58b_post
315    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
316      update output.txt of exp. aim.5l_cs.thSI
317    o various mnc cleanups and improvements:
318      + shrink lookup tables by factor of ~4
319      + better error reporting when running out of lookup space
320      + able to handle longer path/file names (up to 500 chars)
321    o adjoint:
322      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
323      - TBD: "hidden" mom_vecinv recomp. in dynamics
324    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
325     (allow to differentiate between forcing components using new integer flags:
326      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
327     and add new flag to put Dissipation tendency out of Adams-Bashforth.
328    o ecco
329      - enable trend removal from SSH anomaly obs.
330    o adjoint
331      - a fix for PmEpR when #undef EXACT_CONSERV
332      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
333      - try to fix "hidden" recomp. in forward_step for NLFS
334        (NLFS seems broken sometimes after I checked it in)
335    o seaice:
336     - add c-grid version of the dynamic solver:
337       + three new routines that are the c-grid substitute lsr, dynsolver
338         and ostres
339       + put a few fields that were local to dynsolver into global common
340         blocks, so that I can move the computation of stresses etc into
341         seaice_lsr (saves coding but may break the adjoint).
342     - replace more hardwired parameters by runtime parameters
343     - add ice masks that mask the rhs of the implicit solvers where there
344       is no ice (commented out in seaice_dynsolver, because i am not sure
345       if this works properly), eventually this should replace the clipping
346       of ice velocities in seaice_dynsolver to +/-40cm/s.
347    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
348      include it only where its needed
349    o move balancing of fluxes before the call of external_forcing_surf
350    o seaice:
351      - correct units of turning angles (now they are really in degrees)
352      - move computation of GWATX/Y out of main routine into dynsolver
353      - initialize GWATX/Y in seaice_init
354    o Apply mask on Fresh-Water flux (needed for SSH forcing).
355      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
356    o seaice: add runtime flags for turning angles (default to zero)
357    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
358      and trend from exf forcing and ctrl control adjustments
359    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
360      (since checkpoint57x_post)
361    o change the default rotation period to 86164.s = the Earth rotation
362    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
363      and based on a reference stratification. Tested within hs94.cs-32x32x5.
364    o seaice advection: add code for choosing between the default (2nd order
365      central differences) and multiDim advection schemes provided by
366      pkg/generic_advdiff
367    o seaice:
368      - removed all references to SEAICE_GRID.h fields from
369        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
370        (cubed-sphere configuration will change a little)
371      - grid computations in seaice_init are obsolete now.
372      - cleaned up code a little so that is easier to read (hopefully).
373      - added new (better?) discretizations of default advection and diffusion
374        (turn on with SEAICEuseFluxForm)
375      - replace 1 in 3d global fields by kSurface in growth.F
376      
377    checkpoint58a_post
378    o seaice:
379      - bug fix in advect.F
380    o shelfice:
381      - separate shelfice load anomaly from pload (breaks with time
382        dependent forcing), => introduce constant field shelficeLoadAnomaly.
383        Its default is 0., but it may be computed more cleverly from (unknown)
384        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
385        done offline. A good approximation of the pressure load anomaly is
386        necessary to avoid large initial adjustment processes underneath
387        deep-reaching shelfice.
388      - small fix in ISOMIP shelfice_thermodynamics
389      - add more sophisticated thermodynamics of Hellmer (1989), this is
390        now the default
391      - give a few constants more intuitive names
392    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
393      if bulk formulae are used in long integration (especially EmPmR). Turn
394      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
395      if balancePrintMean, the imbalance that is substracted is printed to
396      STDOUT.
397    o fix bug (typo) in obcs_apply_eta.F
398    o add a new package shelfice which enables us to model the circulation
399      underneath shelf-ice with draughts of hundreds of meters.
400     - works
401     - to do: + include improved thermodynamics
402              + check whether kSurfC (from model/inc/SURFACE.h) can be used
403                instead of new field kTopC
404              + can we use topoFile, Ro_surf and existing code in ini_depth.F
405                instead of new field R_shelfIce and new code in ini_depth.F
406                and ini_mask_etc.F?
407              + adjust vertical mixing schemes?
408    o seaice pkg:
409     - add a cpp-flag to include a simple formula for a salinity dependent
410       freezing point of sea water at the surface
411     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
412       meridional stresses are now different (and hopefully correct)
413    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
414       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
415       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
416    o pkg/diagnostics: add options and parameters for regional-statistics
417       diagnostics ; define regions by reading a region-mask from a file
418       (might add other options later)
419    o pkg/bulk_force:
420     - add option and parameters to use AIM surface-flux formulae.
421     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
422       others forcing fields (defined in PARM05, parameter file "data") are loaded
423       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
424     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
425     - use the right EXCH call for uwind,vwind (to work on CS-grid).
426     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
427       and parameters (note: calcWindStress replaces .NOT.readwindstress).
428     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
429    
430    checkpoint58
431    o add "--embed-source" option to genmake2 which, when the supporting
432      tools can be compiled (as determined by genmake2) will turn on the
433      embed_files package which then embeds the entire MITgcm source code
434      (*.[fFhc] + Makefile) used for the build within the executable
435      - requested by CNH but off by default
436      - adds a paltry <9MB to the mitgcmuv executable in most cases
437      - only writes the output when useEMBEDSRC in eedata is true
438    o clean up 3-dim. relaxation codes:
439      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
440      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
441      * Thanks to Tom Haine for testing!
442    
443    checkpoint57z_post
444    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
445      affects output (@ truncation level) of exp. plume_on_slope ; updated.
446    o fix the pickup behavior for obcs in combination with ptracers
447    o fix a bug in ptracers_external_fields_load
448    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
449      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
450    o transfered surface NH pressure to eta field (if exactConserv).
451    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
452         and update lab_sea output.txt file.
453    o completing 3-dim. relaxation code: additional term
454         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
455      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
456      * At compile time, in "EXF_OPTIONS.h" set
457          #define  ALLOW_CLIMTEMP_RELAXATION
458          #define  ALLOW_CLIMSALT_RELAXATION
459      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
460          tauThetaClimRelax3Dim = 15552000.0,
461          tauSaltClimRelax3Dim  = 15552000.0,
462      * 3 cases:
463          1) Use a constant-in-time 3-dim. field
464          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
465          3) Real-time relax. to time-evolving prescribed field
466    o Adding Laplacian-type smoothness constraint on
467      initial and boundary (forcing) controls (ic, bc)
468      * enable at compile-time via
469        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
470      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
471      * Absolute scale somewhat unclear so far
472      * no area weighting was included since no other cost term does so far
473    
474    checkpoint57y_post
475    First step for a NLFS adjoint
476    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
477    o new init. routines for calc_r_star, calc_surf_dr
478    o still need to deal with ini_masks_etc
479    o testreport seemed happy
480    checkpoint57y_pre
481    
482    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
483    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
484    o add new offset feature to offline pkg (plus minor cleanup)
485    o cfc fixes for final year of integration
486    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
487      be in GCHEM_OPTIONS).
488    
489    checkpoint57x_post
490    o fix testreport Pb in multiple test experiment.
491    o cleanup our namelist syntax in verification:
492      - make it more F95 standards compliant (some work still needed)
493      - allows the vast majority of our tests to work with gfortran
494    o Non-Hydrostatic:
495     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
496     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
497    o Allow to apply AB on T,S rather than on AB(gT,gS):
498     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
499     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
500       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
501     - need a "clever" read_pickup to restart from the other AB formulation
502    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
503    o remove some unused variables (reduces number of compiler warnings)
504    o adjoint
505      * Disable useVariableViscosity for adjoint for time being
506        (there are a number of extensive recomputations)
507      * Initialize certain variables needed for adjoint
508    
509    checkpoint57w_post
510    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
511                 fix the singleCpuIO RS version of MDSWRITEFIELD
512       and add a WARNING if using globalFiles=T with multi-processors.
513    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
514      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
515    o tracer advection scheme:
516      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
517       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
518       was not very convenient).
519      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
520       (further tests needed for the implicit DST & Flux-Limiter schemes).
521    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
522      and sRef for convenience, handy, when you want to initialize
523      ptracers in a large domain with a constant non-zero value. Also,
524      untangle ptracers_init.F a little.
525    
526    checkpoint57v_post
527    o change dome exp. to use variable viscosity in side-drag terms.
528    o remove all the files from the cfc_offline test since they are now
529      incorporated into tutorial_cfc_offline which has been producing
530      identical results for a few days of testing
531    o add new parameter: sideDragFactor to enable half-slip-side BC
532      and change side-drag S/R to use viscosity from mom_calc_visc
533      (can switch back by setting sideDragFactor=0.); affects results at
534      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
535       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
536    o vorticity & strain are now computed without masking, to account for
537      no-slip-side BC in variable viscosity calculation ; mask is applied
538      anyway later on, before computing advection/coriolis terms.
539    o modify exp4 to test new obcs support for reading from external files
540      and for passive tracers
541    o fix behavior of ptracers_monitor when monitor output is written to a
542      netcdf-file; still not independent of monitor.F (writes in the same
543      file).
544    o change default value of tRef (put a uniform, meaningful value for ocean
545      & atmos) and initialize sRef (was missing, as Martin mentioned).
546    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
547      to be proportional to enstrophy dissipation length.  Thus,
548       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
549      This is now consistent with Smagorinsky and with the manual.
550    
551    checkpoint57u_post
552    o OBCS and PTRACERS: add open boundary support for passive tracers
553      - either use homogenous (pseudo) v.Neumann conditions or prescribe
554        OB-values from file; this is not different from the way theta and salinity
555        are treated
556      - however, Orlanski-radiation conditions are not supported, and the model
557        will stop if you use pTracers and Orlanski at the same time.
558      - beefed up the rountine obcs_external_fields_load: now only those open
559        boundary values are overwritten with values from files for which there
560        are really files, otherwise the OB-fields remain untouched. This makes
561        it possible to use different OBs at different ends of the domain (as
562        with EXF)
563    o reduce number of exch calls in shap_filt (s2).
564    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
565      truncation level) 4/5 MLAdjust test results (11&12 digits match).
566    
567    checkpoint57t_post
568    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
569    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
570      same truncation, independent of the face number: affects affects several
571      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
572    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
573      note that biharmonic viscosity + no-slip was not tested in any experiment.
574    o fix bug in non-linear free-surf side-drag ; generate new output for
575      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
576    o make mnc honor the writeBinaryPrec flag for most kinds of output
577    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
578    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
579      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
580    o add brackets in multi-terms sum to get same truncation, independent of
581      the face number (manage to get exactly same value of gU,gV at the cs-edge)
582      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
583    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
584      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
585      a maximum grid-scale Reynolds number.  Also, changes all length calculations
586      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
587      Suggested values of viscosity parameters found in mom_calc_visc.
588      Many new viscosity diagnostics available.
589    
590    checkpoint57s_post
591    o Add clearing-house for viscosity calculations, mom_calc_visc and
592      correct numerous bugs in LeithD and Smagorinsky discretizations.  
593      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
594      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
595      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
596      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
597      The Strain-Tension form is now called with useStrainTensonVisc=.true.
598      ViscAhStrain and viscAhTension are now retired.
599    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
600    o In response to JMC's bug report, genmake2 now ignores any soft-links
601      that it finds in the *current* directory when searching for files.
602      Soft-links found in any other source directories will still work as
603      they did before.
604    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
605      a C routine to unlimit the stack size
606    o mnc-ify pkg/aim snapshot vars
607    o mnc-ify pkg/land as requested by Daniel
608    o various changes to mnc including:
609      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
610      - output can now be grouped so that all files within a group
611          change the ITER portion of their names in lock-step together
612      - can now read ("global") PER-FACE (in addition to PER-TILE) files
613          and works with both EXCH1 and EXCH2 (but needs more testing)
614      - writing works for all verification test cases w/ g77 on Linux
615    
616    checkpoint57r_post
617    o make MNC variable initialization happen earlier
618    o add diagnostics for (almost) each term of the momentum Eq.
619    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
620    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
621    o remove MINIMAL_TAVE_OUTPUT option ;
622      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
623    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
624      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
625    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
626    o add time-dependent SST, SSS control
627    o cost terms in ecco/ modularized (new cost_generic.F)
628    o cost_averages routines are modularized (new cost_averagesgeneric.F)
629    o new infrastructure for seaice model vs. obs misfits in seaice/
630      * driver from the_main_loop.F is seaice_cost_driver.F
631      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
632      * gradient check in Exp. 6a of natl_box_adjoint/
633    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
634      (see README file)
635    
636    checkpoint57q_post
637    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
638    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
639      - bug was reported by Jean-Michel and Ian Fenty
640    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
641      update exp. cpl_aim+ocn output.
642    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
643      Needed for high-res. runs with large global files
644      to be able to limit tapelev size
645    o Changed some tests for adjoint:
646      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
647      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
648      * global_ocean.90x40x15/ back to default 3-level checkpointing
649    o Modifications to enable scripted COMMON to MODULE conversion
650      * verification/OpenAD/code/ has necessary scripts and description;
651      * converts, compiles and runs successfully;
652    
653    checkpoint57p_post
654    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
655    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
656      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
657    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
658    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
659      (was already the case for dissipation with mom_vecinv,
660       and also the case for grad.PhiHyd when staggered-timeStep)
661      This will allow to put dissipation out-off the AB time-stepping.
662     Unfortunately, affects truncation error. Update output of exp. that "fails"
663      (cg2d matching number) and leave the others for later: front_relax(10),
664      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
665      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
666    
667    checkpoint57o_post
668    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
669      (2) its ready to be documented during the 20050801 DocFest
670    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
671      for ideal_2D_oce and lab_sea on linux_ia32_g77
672    o set to #undef CTRL_SET_OLD_MAXCVARS_30
673      in global1x1_tot/code_seaice_adj to access indices 32, 33
674      (worth another tag)
675    
676    checkpoint57n_post
677    o adding precip control xx_precip 32
678    o adding swflux control xx_swflux 33
679    o Replacing 10 forcing penalty cost routines by 1 generic.
680    o Implementing partitioning in time-mean and variable adjustment
681      for atmos. state.
682    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
683    o in natl_box_adjoint:
684      * updated exp 1 to 10
685        (but does not have time-mean vs. variable split results yet)
686    o updated global1x1/*_seaice_adj/
687      to incorporate latest changes
688    o enable useSingleCpuIO for mdsio vector routines
689      (applies in particular to tapelev I/O)
690    o removed inefficient K-loop in all active_file*control*.F
691    
692    checkpoint57m_post
693    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
694      and advect_cs (use EXCH-2 and standard cs-32 grid files).
695    o pkg/exch2: filling of face-corner halo regions is optional
696      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
697    
698    checkpoint57l_post
699     tag before updating tutorials (pre-release-2)
700    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
701       for output and interpolation of input fields onto model grid)
702    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
703       Affects results of exp. rotating_tank ; update output.txt.
704    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
705          and taking the square quantity and/or using a fraction-weight field.
706    o fix aim_diagnostics_init.F mate numbers.
707    o add mnc output capability to diagnostics/diagstat and update
708      our cvsignore files for the ACSII output generated
709    
710    checkpoint57k_post
711    o lab_sea now uses diagnostics package and provides a suite of
712      new EXF diagnostics output.
713    
714    checkpoint57j_post
715    o exf
716      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
717        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
718        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
719      * extended diagnostics output
720        - now includes all EXF variables
721        - hs, hl moved to common block
722        - separate S/R for diagnostics, called after ctrl vector is added
723        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
724        - EXFqnet contains true Qnet (i.e. includes qsw)
725      * updated verif. lab_sea, global_with_exf
726      * Rearranging hflux (exf_mapfields -> exf_getforcing)
727        to ensure that diagnostics sees a true EXFqnet
728    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
729    o diagnostics pkg: change pointers so that 1 diagnostic can be used
730      several times with different frequencies.
731    o mnc-ify the thsice package as requested by Daniel Enderton
732      - the monitor--MNC output needs work
733      - many attributes need to be added (most are currently blank)
734    o mnc-ify theaim_v23 package as requested by Daniel Enderton
735      - many attributes need to be added (most are currently blank)
736    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
737    o add Sadourny like discretization to the 4th.O vorticity advection scheme
738    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
739      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
740         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
741    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
742     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
743    
744    checkpoint57i_post
745    o Diagnostics package was changed: diagnostic allocation is now deactivated
746      by setting an empty file name in the namelist (used to be by setting 0 frequency)
747    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
748      add 1rst Order upwind vertical Shear.
749    o add a quick fix for A/B checkpointing in OFFLINE mode
750    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
751      end-run around the C/Fortran linking horror in eesup/src/timers.F
752    o added pkg/runclock: allows user to terminate run based on wall clock
753    o added non-hydrostatic scaling parameter: nh_am2
754    o pkg/my82: futile attempt to make results compiler-independent by adding
755      some "_d 0", etc. no effect.
756    o for mnc output, fill the 'T' coordinate var with myTime and create a
757      separate 'iter' variable for iteration count
758    o pkg/diagnostics:
759      add new capability: output of Global/Regional & per-level statistics ;
760      tested against monitor output (including land & thSIce) on various exp.
761    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
762    
763    checkpoint57h_done
764      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
765      data.diagnostics, data.gchem, data.ptracers) is done.
766    
767    o pkg/diagnostics: prepare for Global/Regional statistics.
768      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
769    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
770      and rename it: DIFFERENT_MULTIPLE
771    
772    checkpoint57h_post
773    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
774    o pkg/diagnostics: change output frequency, now in seconds (instead
775      of Nb of iterations). This requires to change data.diagnostics.
776    checkpoint57h_pre
777    
778    o in mnc, let the user create the output dir if both mnc_outdir_date
779      and mnc_outdir_num are false
780    o add fflags() to pkg/diagnostics which allows one to specify, on a
781      per-file basis, the file precision [default behavior is unchanged]
782    o added diagnostics to pkg/kpp, including computation of mixed layer
783      depth based on a temperature/density criterion
784    o updated verification/natl_box to test the new pkg/kpp diagnostics
785    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
786    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
787    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
788      not mnc -- this mistake was found by JMC and is now corrected
789    
790    checkpoint57g_post
791    o add Adams-Bashforth 3rd Order time stepping:
792      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
793      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
794    checkpoint57g_pre
795    
796    o make lambda[Theta,Salt]ClimRelax spatially varying
797      (default remains spatially uniform constant based on tau)
798    o added new control variables
799      * init. uVel, vVel, etanN
800      * lambda[Theta,Salt]ClimRelax
801    o separate masks used for ctrl_pack/unpack 'from write_grid' output
802      (suggested by G. Forget)
803    
804    checkpoint57f_post
805    o add parameter "baseTime" = model base time = time at iteration zero
806      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
807      account for baseTime shift
808    o move Coriolis arrays from PARAMS.h to GRID.h
809    checkpoint57f_pre
810    
811    o mnc-ifying the seaice package
812    o introduced an alternative length scale calculation for use in the limiting
813      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
814    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
815    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
816      as well as grad(vort3).  Made it compatible with both approximate form
817      for the cubed sphere and full form of these gradients.  Added flag
818      useFullLeith to select between approximate and full form.  
819    o add "d0" in getcon.F to reduce differences between compilers/platforms
820      update output.txt of exp. fizhi-gridalt-hs
821    o change port_rand funtion to allow to set the seed.
822    o fix obscure MNC bug involving conversion between reals and integers
823      - it caused no problems with certain (eg. gcc, ifc) compilers but the
824        new version is now more standards-compliant
825    o adjoint-related modifications
826      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
827      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
828      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
829    
830    checkpoint57e_post
831    o Adding eddy stress controls a la Ferreira et al.
832    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
833    
834    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
835      update output.txt of exp. fizhi-gridalt-hs
836    o add more "Z" dimensions and associated coordinate vars to MNC
837    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
838    o parameter calendarDumps: when set, approximate months (30-31 days) and years
839      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
840      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
841      months and years.  Requires pkg/cal.
842    o diagnostics: add pickup functionality
843      - off by default for backwards compatibility
844      - current version only uses MDSIO -- MNC will be added
845    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
846    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
847    
848    checkpoint57d_post
849    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
850    o modify verification/ideal_2D_oce so that it tests the creation of mnc
851      output from the diagnostics package
852    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
853    o make genmake2 more portable by using ".$FS" instead of ".f" for more
854      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
855    o add coordinate variables to the MNC output from the diagnostics package
856    o change MNC-flags default value: true when useMNC=TRUE
857    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
858      the ability (off by default) to read the grid information using MNC
859    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
860    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
861    o do snap-shot diagnostics at the middle of the time-interval (instead of
862      at the end).
863    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
864      new test for AIM with thSIce + slab-ocean
865    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
866    o move state variable diagnostics to the beginning of the time step ;
867      (note: still needs some work specially for snap-shot diagnostics)
868      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
869    
870    checkpoint57c_post
871    o Change testing option (-ieee) to get closer agreement between g77 & ifort
872    o generate new output.txt files on faulks with g77 & the new -ieee option
873    checkpoint57c_pre
874    
875    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
876      update output.txt of exp. global_ocean.90x40x15
877    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
878      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
879    o add saltFlux(+File) forcing capability with periodicExternalForcing
880    o allow to use pkg diagnostics for GM-Redi & ThSIce output
881    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
882    o improvements for the MNC output from DIAGNOSTICS:
883      - correct handling of the unlimitied dimension
884      - all dims now have associated coordinate variables
885      - variables located at U, V, and Corner ("Z") points are now written
886        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
887        *all* data points are output
888    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
889    o added pkg/seaice/seaice_monitor.F
890    o mdsio_readfield.F can now read files visible only to master MPI process.
891    o pkg/seaice: some test code for ice-modified ocean stress
892    o exf_getffields interpolation defaults to bilinear for all scalar forcing
893      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
894      spurious negative numbers for precipitation and humidity.  Will cause
895      some small numerical differences for integrations using pkg/exf/exf_interp.F.
896    o pkg/ctrl/
897      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
898        May be enabled via doPackDiag
899      *  introduce z-scaling of
900         + gradient (doZscalePack) and
901         + control (doZscaleUnpack)
902    o pkg/mdsio/
903      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
904      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
905    
906    checkpoint57b_post
907    o simplify options in diagnostics_fill arguments (remove weird combinations)
908    o fix MNC coordinate variables so that they now contain per-face index
909      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
910      general, EXCH2 grids are only aligned to a "local" coordinate system
911    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
912    o Implement instantaneous output within pkg diagnostics:
913      setting a negative frequency in data.diagnostics produces
914     "snap-shot" output (as opposed to time-average if freq > 0)
915    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
916      NOTE: change ptracer diagnostics name: use 2 characters to work with
917            more than 9 tracers. Add also diagnostics of advect & diffus flux.
918    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
919      becomes the coordinate variable for the 'T' dimension
920    o add CF-style coordinate variables to MNC
921      - just a first cut:  numbers are meaningless on the cubesphere and
922        missing along the T axis but otherwise it works!
923    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
924    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
925    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
926      this is based directly on what the model compute, so that the content of
927      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
928    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
929    o clean up build options files for SunOS, in particular
930      - remove -traditional from xmakedepend
931      - change -xarch=v9 to -xarch=native for f77
932      - restore use of make (not gmake)
933      - add CC=gcc if using g77
934    o changes per discussion of AM, JMC, & EH3 today:
935      - move redundant "grid" variables out of "state" -- in preparation of
936        creating proper CF-style coordinate variables and in recognition
937        that any/all grid variables can be easily copied (eg. w/NCO) from
938        the grid files into any of the other NetCDF files
939      - *always* output grid variables with MDSIO (this will eventually be
940        changed)
941      - output MNC grid file if useMNC is true
942    o every instance of _END_MASTER() has been found and replaced with
943      _END_MASTER( myThid ) in order to satisfy certain picky Sun
944      preprocessors
945    o re-arrange diagnostics pkg initialisation:
946     - allow each package to extend the available diagnostics list
947     - add some checking and fix small problems (multi-threaded, ...)
948     - new S/R diagnostics_fill (replace fill_diagnostics):
949       look through the short list of active diag. (instead of the long list)
950       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
951    
952    checkpoint57a_post
953    o this set of changes restores TAMC compatibility
954      tested for global_ocean.90x40x15 adjoint on trough
955      (what a pain)
956    
957    checkpoint57a_pre
958    o some modifs in tools/build_options for sunos
959    o call ctrl_pack for ctrl at end for optimcycle=0
960    
961    checkpoint57
962    o add horizontal bi-harmonic viscosity for vertical velocity
963      - new parameter viscA4W (defaults to viscA4)
964      - affects only non-hydrostatic code
965      - to be done: no-slip lateral boundary conditions
966    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
967    o implement Implicit Vertical advection for pTracers
968    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
969      (implemented also for implicit vertical diffusion & advection)
970    o OBCS: extend application of tracer open boundary conditions
971      to a strip beyond the boundary of width Olx/Oly
972    o add call monitor to TAF set of required calls (flow directives)
973      and include in natl_box_adjoint
974    o untangle a few ifdefs related to cost, ctrl, autodiff
975      untangel a few ALLOW_ECCO_OPTIMIZATION
976    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
977      (theta2, salt2 in ecco_cost_weights)
978    
979    checkpoint56c_post
980    o OBCS as control variables
981      - update ctrl_ad_diff.list, obcs_ad_diff.list
982      - remove balance of obcs controls from default
983      - fix index bug nobcs in ctrl_init
984      - fix dummy fields filen in ctrl_pack
985      - add dummy weights for obcs
986    o lsopt: comment out fort.94 output
987    o optim:
988      - remove unnecessary header files
989      - adjusted namelists
990      - add xerbla.F to Makefile
991    o exf:
992      - multiple modifications of exf_check_range
993      - unit change in exf_init_runoff from [m/year] to [m/s]
994    o mdsio:
995      - i/o-vector change debugLevel from debLevA to debLevB
996    
997    checkpoint56b_post
998    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
999      is called from DO_THE_MODEL_IO
1000      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1001      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1002      - clean up PTRACERS_WRITE_TIMEAVE a little
1003    o add another verification experiment that tests both the cfc-pkg and
1004      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1005      reactive tendencies treated inline with regular timestepping
1006    o testreport previously did a lousy job of comparing small numbers, so
1007      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1008      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1009      testreport.
1010    o ptracers_monitor: bug fix for MPI
1011    
1012    checkpoint56a_post
1013    o GCHEM: finish reorganizating the package
1014      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1015        (introduces another 3D-array for each passive tracer, but only if
1016        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1017        gchemTendency is not needed because the timestep is done separately)
1018      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1019      - GCHEM is now---more or less cleanly---separate from PTRACERS
1020      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1021        so clear to me how that should be done in a general way.
1022    o CFC: improve formatting of output in CFC_ATMOS
1023    o PTRACERS:
1024      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1025        that ALL experiments with ptracers enable can be checked. This makes
1026        GCHEM_MONITOR obsolete.
1027      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1028        monitorFreq
1029      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1030    o add PTRACERS (PTR0[1-5]) to testreport output
1031    o exf_check_range:
1032      * default changed to .TRUE.
1033      * will check values for niter0 if debLevA, every timestep if debLevB
1034      * STOP in exf_check_range if 'out of range'
1035      * range chosen generous to allow for potential extema
1036      TBD: a version with stricter range
1037           permitted range would be runtime parameters
1038    o GMredi:
1039      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1040      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1041      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1042    o GCHEM:
1043      - move call to GCHEM_FORCING_SEP, so that it is now called before
1044        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1045      - introduced a useGCHEM runtime flag and applied it everywhere.
1046      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1047        this flag is now only visible within GCHEM-pkg routines.
1048      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1049        be replaced by a 3D array that is computed before thermodynamics; for
1050        this, the tracer ID iTracer had to be included into the parameter list
1051        of ptracers_forcing
1052      - set up forward_step to call gchem_forcing, that will replace
1053        gchem_forcing_int in ptracers_forcing
1054      - cleaning up
1055    o small cleaning of exch2: remove files that are also in eesupp/src
1056    
1057    checkpoint56
1058    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1059    o mnc: cleanup "full" files--fixes out-of-memory problem
1060    o ECCO-GODAE
1061      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1062      * fully merged and updated from SIO code
1063        windstress sign change affects
1064        - exf_inscal_[u/v]stress
1065        - sign of xx_tau[u/v] adjustments
1066        - signs in cost_scat
1067      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1068      * natl_box_adjoint updated and compressed
1069      * 2-level checkpoint switch added
1070        (tested in EXP. 1 of natl_box_adjoint)
1071      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1072    o SVD
1073      * first complete, non-hacked version for SVD calculations
1074      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1075        performed via direct access files admtlm_vector.it????
1076        (via ctrl_[un]pack)
1077      * optimcycle is used for ARPACK iteration counter
1078        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1079      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1080        and add linear transforms where necessary
1081      * controls are initial/final SST, SSS (can be extended; need to check
1082        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1083    o mdsio: filename info to both stderr, stdout
1084    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1085      from sign change
1086    
1087    checkpoint55j_post
1088    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1089      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1090    o add consistent build directories and .cvsignore files to verification
1091    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1092    o make all subroutines 30 or less characters in length for certain older
1093      compilers to work (a thorough search only turns up two routines in
1094      pkg/ptracers)
1095    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1096      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1097    
1098    checkpoint55i_post
1099    o change arrays for total vertical diffusivity (2.D if explicit,
1100      3.D if implicit) ; each ptracer uses its own background value.
1101    o added mnc/NetCDF output capability to ocn_compon_interf
1102      - added bits to verification/cpl_aim+ocn so that it can run on
1103        ITRDA and other clusters without the mpirun "-wd" option
1104    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1105      configuration
1106    o give MNC the ability to create additional files rather than
1107      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1108      - the default is just less than 2GB which is a practical limit
1109        on many systems
1110    o Compute the non-local term using either KPP vertical diffusivity (=default)
1111       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1112    
1113    checkpoint55h_post
1114    o add verification test "vermix"
1115    o remove all the *_ioinc flags and replace with the single global
1116      outputTypesInclusive flag
1117    o allow to set a vertical profile of vertical diffusivity for T & S
1118    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1119    o useMNC moved from data.mnc to data.pkg
1120    
1121    checkpoint55g_post
1122    o Renaming carbon AD experiments to comply with testreport conventions
1123    o Updating adjoint of Held-Suarez hs94.1x64x5
1124    o Fixing directives for non-ECCO forward_step, after ECCO directives
1125      have been fixed to avoid recomp. of do_oceanic_phys
1126      Works well for global_ocean.90x40x15,
1127      but recomp. issue remains for carbon
1128    o Updating adjoint output for natl_box_adjoint after
1129      pkg/ecco has been modified (see taga c55d_post)
1130    
1131    checkpoint55f_post
1132    o rename to timeave_init_fixed
1133    
1134    checkpoint55e_post
1135    o some delicate re-shuffle of store directives to avoid one
1136      extra call of do_oceanic_physics
1137      affects ecco_the_main_loop.F, do_oceanic_physics.F
1138      checkpoint_lev1_directives.h
1139    o NB: this may break global_ocean adjoint temporarily,
1140      but it is clear how to fix it. Will do later, need this now.
1141    
1142    checkpoint55d_post
1143    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1144    o ecco_cost_weights is modified to 1x1 runs
1145    o modifs to allow observations to be read in as
1146      single file or yearly files
1147    o enable to read exf forcing fields as either
1148      single file or yearly files (flag useExfYearlyFields)
1149    checkpoint55d_pre
1150    
1151    o switch between 2-level and 3-level checkpointing
1152    o add ability of MNC to write local and "partial" (eg. 2D slices where
1153      the full 3D field is never actually stored) arrays to NetCDF files
1154      with the correct (that is, the complete multi-dimensional) set of
1155      array indicies
1156      - used in mom_vecinv() to write the diagFreq output
1157      - tested (demonstrated) in verification/aim.5l_cs
1158    o further mnc-ification
1159      - add verification/lab_sea to the list with mnc setups
1160      - fix undefined mnc v-names in cd_code
1161      - add kpp to mnc output (both snapshot and timeave)
1162    o non-hydrostatic code
1163      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1164        in calc_gw.F
1165      - defaults to viscAh
1166      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1167        friction or Leith) in non-hydrostatic mode, as long as there is
1168        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1169    o pkg/cost
1170      extend simple cost functions to treat time mean quantities
1171      (T,U,V) via cost_accumulate_state from cost_tile
1172    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1173        be 2 times larger than the minimum size the advection scheme requires.
1174        now get a perfect conservation of salt in advect_cs test-exp (updated)
1175    o GGL90 (Gaspar's TKE mixed layer)
1176      - add horizontal diffusion of TKE, requires exchanges in
1177        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1178        default. In OPA there is no horizontal diffusion of TKE but the
1179        mixing coefficients are computed from a horizontal average of TKE of
1180        6 points or so. I think that diffusion has a little more physical
1181        justification.
1182      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1183        was in vain)
1184      - mask tke-variable in ggl90_init
1185    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1186    o fix biharmonic diffusion on CS-grid.
1187    o more obcs stuff
1188      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1189        for reading boundary values. This routine is called from
1190        obcs_prescribe_read
1191      - updated obcs_check
1192      - changed sponge layer relaxation parameter units for days to seconds
1193      - turned off sponge layer by default
1194      - changed argument list of OBCS_CALC to myTime+deltaTclock
1195      - fixed about 35 bugs in obcs_external_fields_load
1196    
1197    checkpoint55c_post
1198    o obcs stuff
1199      - new runtime flags useOBCSprescribe, useOBCSbalance
1200      - re-arranged obcs_calc
1201      - moved exf_getobcs to obcs_prescibe_read
1202        obcs_prescibe_read is called after ORLANSKI stuff
1203        and independent of it (executable can contain all).
1204      - updated obcs_check
1205      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1206        These may be necessary only if tangential velocities are
1207        prescribed at OB, not sure, needs testing.
1208    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1209      which simplifies the calls and passes the ifc check-bounds test
1210    
1211    checkpoint55b_post
1212    o add a 2D scalar, Z location, exchange_2 routine.
1213    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1214      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1215      affects advect_cs results (for the wrong reason): update output.txt
1216    o use a more standard discretization for biharmonic viscosity ;
1217     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1218      affects results of dome set-up: update output.txt
1219    o fix gad_advection.F (CubedSphere part), back to version 1.23
1220    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1221    
1222    checkpoint55a_post
1223    o merged code to
1224      * prescribe/read time-dependent open boundaries
1225        (works in conjunction with exf, cal)
1226      * sponge layer code for open boundaries
1227      * each boundary N/S/E/W now has its own CPP option
1228        (healthy for the adjoint)
1229    
1230    checkpoint55
1231    o up-to-date adjoint of previous breaks
1232      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1233      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1234      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1235      - carbon: * remove tr1-related adjoint verification
1236                * add ptracer as control variable
1237    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1238      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1239    
1240    checkpoint54f_post
1241    o in verification/carbin/ remove experiment related to
1242      ALLOW_PASSIVE_TRACER (array tr1 etc)
1243      code_ad/ input_ad/ results_ad
1244    
1245    o add two new packages
1246      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1247        + subject to optimization (memory)
1248      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1249        + subject to reordering (many GOTOs in the original code)
1250        + so far opps is called for every (i,j) point, and then operates in
1251          the vertical; one may want to reorder the scheme in order operate in
1252          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1253          fields)
1254    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1255      - all verification tests compile and run with linux_ia32_g77
1256      - defaults are compatible with current input files--nothing
1257        should change if you were not previously using MNC
1258      - MNC output has been added in numerous places (eg. timeave)
1259        but there are still a few writes not yet do-able with MNC
1260        (this is in progress)
1261      - flags now allow for either/or/both use of MDSIO and MNC and
1262        documentation will soon follow
1263      - numerous small formatting cleanups for ProTeX
1264    o add version info (via BUILD_INFO.h) to MNC and stdout
1265    
1266    checkpoint54e_post
1267    o add two new packages
1268      - pp81 (Packanowski and Philander, 1981), Richardson number and
1269        stratification dependent mixing
1270      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1271      - these scheme operate in a similar manner as KPP (without ghat, of
1272        course), however there is only one diffusivity that is used for both
1273        temperature and salinity (and passive tracers)ç
1274    o add offline package
1275    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1276      provided by Stephanie Dutkiewicz
1277    o genmake2: add ability to search for C compilers and cleanup test output
1278      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1279    
1280    checkpoint54d_post
1281    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1282    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1283      leading to additional shift by 5 days each year of integration
1284       (i.e. leading to considerable offset over the years)
1285    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1286    o start with no AB and no initial filtering (staggerTimeStep):
1287      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1288    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1289      (external loading & cpl import/export stay in forward_step.F)
1290    o update coupling interface to work with new staggerTimeStep
1291    o change MDSIO ptracers_pickup.
1292    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1293    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1294    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1295    
1296    checkpoint54c_post
1297    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1298      this affects (truncation error) output.txt of test-exp:
1299       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1300    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1301    o change Qnet to always be the net heat flux, (+upward).
1302      affects (truncation error) output of natl_box exp.: updated
1303    o define the max number of passive tracers in PTRACERS_SIZE.h
1304    o start to test mnc routinely in exp0
1305    o add sea-ice loading (sIceLoad) as a new forcing field.
1306    
1307    checkpoint54b_post
1308    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1309       impressive on Altix and Opteron systems)
1310    o diagnostics can now write NetCDF files through the mnc package
1311    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1312    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1313    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1314      affects (truncation error) output of lab_sea & natl_box exp.: updated
1315    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1316    
1317    checkpoint54a_post
1318    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1319    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1320    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1321    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1322      + internal_wave (shift in writing cg2d_ini_res)
1323    checkpoint54a_pre
1324    
1325    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1326      - modified verification/lab_sea and natl_box_adjoint accordingly
1327    
1328    checkpoint54
1329    checkpoint53g_post
1330    o prepare splitting of thermodynamics: store convect.counter in common block
1331    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1332      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1333    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1334    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1335    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1336    o restore adjointability
1337    
1338    checkpoint53f_post
1339    o modifications that affect AIM experiment results (update output.txt):
1340      - no advection of S at top interface Nr (pkg/generic_advdiff)
1341      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1342    o AIM pkg:
1343      - include stability function into surf.Flux derivative relative to Tsurf
1344      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1345    
1346    checkpoint53e_post
1347    o merged cylindrical coord configuration
1348    o added rotating_tank experiment
1349    checkpoint53e_pre
1350    
1351    checkpoint53d_post
1352    o faulks upgraded: re-generate output.txt that have changed:
1353       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1354    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1355    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1356    o added Sadourny discretization of Coriolis
1357      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1358      - re-enabled use of omega3 (useAbsVorticity)
1359    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1360      vector-invariant equations
1361      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1362    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1363      hopefully without new bugs
1364      - still to do: biharmonic friction for non-hydrostatic w
1365    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1366    o regenerated output for global_ocean_ebm (using -ieee)
1367    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1368      of mom_common/
1369      - simple re-arrangement of instructions within computing loop
1370    checkpoint53d_pre
1371    
1372    checkpoint53c_post
1373    o new version of coupler for AIM+thSIce and Ocean models
1374     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1375     - land: change Evaporation of snow
1376     - aim with thSIce: fix bug in snow-precip.
1377    o changes to calc_gw.F
1378     - bug fix for w^2 term near the bottom boundary
1379     - (hopefully) improve the lateral slip boundary condtions for use with
1380        partial/looped cells
1381      - because the bug fix changes two verification experiments anyway (exp5
1382        and plume on slope), change the lateral boundary condition from half slip
1383        to the value of no_slip_sides
1384    o ebm package wasnt quite up to the parallel task. Fixed that.
1385    o Adjoint of EBM package + verification
1386      * TLM OK
1387      * ADM not sufficient accuracy yet (needs further testing)
1388    
1389    checkpoint53b_post
1390    o Commiting new energy balance model to repository
1391      * package is pkg/ebm
1392      * verif. is verification/global_ocean_ebm
1393      * references are in ebm_driver.F
1394    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1395    C        Global thermohaline circulation. Part I:
1396    C        Sensitivity to atmospheric moisture transport.
1397    C        J. Climate 12(1), 71-82
1398    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1399    C        Global thermohaline circulation. Part II:
1400    C        Sensitivity with interactive transport.
1401    C        J. Climate 12(1), 83-91
1402    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1403    C        Destabilization of the thermohaline circulation
1404    C        by atmospheric eddy transports.
1405    C        J. Climate 7(12), 1870-1882
1406    o Will need long integration testing.
1407    checkpoint53b_pre
1408    
1409    o created pkg/mom_common in preparation for variable viscosity code
1410    o renamed and split ini_mnc_io
1411    o pkg/land: only liquid water can diffuse or run-off
1412    o AIM using land: soil wetness availability account for snow
1413    o added printMapIncludesZeros to EEPARMS namelist
1414    
1415    checkpoint53a_post
1416    o restore TAMC compatiility for exf_constants.h
1417      (no usage of _d in .h)
1418    o Additional storing in KPP in an attempt to fix
1419      TAMC problem with adjoint of KPP code.
1420      (no success...)
1421      Identical code works fine with TAF.
1422    o Fixed verification/natl_box_adjoint experiments.
1423      Initial conditions for Experiments 4 and 5 are now
1424      set to "SEAICE_initialHEFF=0", which is more reasonable,
1425      and hence gives results closer to that of Experiment 2.
1426      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1427    
1428    checkpoint53
1429    o stable checkpoint with up to date adjoint
1430      TLM tests only run for 1st grdchk at the moment. Its unclear if
1431      this is a code problem or a problem with resetting code for g_
1432      variables that is being autogenerated wrong.
1433      Otherwise:
1434       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1435       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1436         are both still in chaos following their security messes.
1437    
1438    checkpoint52n_post
1439    o various build (mostly genmake2) changes including:
1440      - ability to build/run more easily within Cygwin and MacOS X
1441      - more complicated Makefiles with a stronger dependence on Gnu Make
1442    o pkg/seaice modifications
1443      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1444        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1445        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1446      - changed proxy for geostrophic velocity and updated
1447        verification/lab_sea/results/* accordingly
1448      - removed ADI dynamic solver from pkg/seaice
1449      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1450        they caused a segmentation fault under certain circumstances
1451      - removed unused field WATR
1452    o bug fix in exf-package:
1453      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1454         now reflect that.
1455    o small fixes in the cal-package:
1456      - set reference date to first of January for the 'model'-calendar
1457      - failing of cal_CheckDate in cal_FullDate now actually results in a
1458        warning
1459    o small modifications in exf-package to increase flexibility:
1460      - change climtempfreeze from a constant to a runtime parameter that
1461        is specified in data.exf_clim (default = -1.9)
1462      - introduce runtime parameter windstressmax (default = 2.0) that is
1463        specified in data.exf
1464    o fix in pkg/thsice:
1465      - update Evap (Tsf changes) to be consistent with Latent heat flux
1466      - maintain snow precipitation unchanged (even if Tsf >=0).
1467     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1468    
1469    checkpoint52m_post
1470    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1471      this does not change any of the results, because myIter=0 in swfrac always
1472      lead to jwtype=2 (the default anyway), but the call makes little sense
1473      as a default
1474    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1475    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1476      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1477    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1478    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1479    o extending useSingleCpuIO option to work with new exch2 I/O format
1480      - old-style, missing-tile I/O is still accessible by defining CPP
1481        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1482    o monitor package can write to NetCDF files and/or STDOUT
1483    o fix re-definition bug in MNC_GRID_INIT_ALL()
1484    o doc/api_reference added
1485      - a framework for building an API Reference Manual using all
1486        the "protex" comments embedded in the code
1487      - see pkg/generic_advdiff, pkg/mnc for examples
1488    o MNC:
1489      - make myThid the last argument for all subroutines
1490      - new default for the grid files: NO halos
1491      - add useMNC and other run-time flags
1492      - separate per-file-group handling of the unlimited dimension
1493      - early initialization of MNC w/ flags read at the eeboot stage
1494        and lookup tables set in initialize_fixed
1495      - write all MNC output to a freshly-created directory
1496    o thermodynamics sea-ice (thsice) is now tested with testreport.
1497    o test exp. advect_cs: use the standard cs32 grid ; update output.
1498    o Added functionality to grdchk:
1499      pick global i,j,k position (or nearest wet) where to perform check.
1500    
1501    checkpoint52l_post
1502    o new land formulation:
1503      a) use ground enthalpy as prognostic variable to ensure exact
1504         energy conservation.
1505      b) account for water temperature and for latent heat of freezing
1506         in all processes (rain, run-off, ground storage)
1507      c) compute surface and ground temperature implicitly.
1508    o aim_v23 modification for new land model:
1509      a) Treat separately land / ocean / sea-ice surface fluxes
1510         to allow implicit computation of land & sea-ice surface temp.
1511      b) add snow precipitation.
1512    checkpoint52l_pre
1513    
1514    o fix problem (when 1 tile is empty) in min/max monitor.
1515    o fix bug in timeAve (u,vZetatave in common block)
1516    o no restoring terms under ice for pkg/seaice
1517    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1518    o bug fix for pkg/seaice pickups
1519    o change MNC call locations and add coordinate attributes
1520    o mask vorticity at the corner ; affects global_ocean.cs output
1521    o fix ini_curvilinear_grid ; test CS experiments with mpi
1522    o aim.5l_cs: modify sea-ice fraction input file ; update output
1523    o exf: Adding simple range check routine for exf fields after read
1524    
1525    checkpoint52k_post
1526    o removed top-level directory "diags"
1527      - we migrated these functions to pkg/timeave a long time ago
1528    o fixed bug introduced in pkg/monitor
1529    o accuracy ctrlprec = 32 insuffient for gradient checks using
1530      averaged fields (I/O via cost_averages)
1531      -> use ctrl.h in active_file*.F to control I/O precision.
1532    o paramter list of CALL ADTHE_MAIN_LOOP
1533    o added initial do_the_model_io to ecco
1534    o set all ...Freq to zero after cost_final
1535      taveFreq, dumpFreq, pChkptFreq
1536    o MAIN and ECCO differentiability restored
1537    
1538    checkpoint52j_post
1539    o fix nchklev in tamc.h for global_ocean...
1540    o Bringing flow and store directives up-to-date
1541    o Really weird thing!
1542      call do_the_model_io from the_main_loop with parameters
1543      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1544      TAF places a faulty re-call of initialise_varia
1545      after cost_final call which should not be there!
1546    checkpoint52j_pre
1547    
1548    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1549      error messages
1550    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1551    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1552      debug output
1553    o modfied mdsio_writefield.F to handle non-global files under exch2
1554    o update AIM Cubed-Sphere exp (aim.5l_cs):
1555      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1556    o update AIM Equatorial Channel exp:
1557      use standard aim_v23 pkg and change the SST fields to be more realistic.
1558    o globalFile now works with exch2
1559    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1560      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1561    o limit timeave output for hi-res integrations
1562    
1563    checkpoint52i_post
1564    o removed CPP_EEOPTIONS.h from verification/*/code
1565    o updated the tiling for global_ocean_pressure
1566    checkpoint52i_pre
1567    
1568    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1569      the old pkg/aim).
1570    
1571    checkpoint52h_pre
1572    o shortened offending lines in exch2_send_rx?.template
1573    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1574    o genmake2: add build & execute test for NetCDF code
1575    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1576      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1577    o added useSingleCPUIO flag to monitor.F and mon_out.F
1578    o added temporary hack for sea-ice dynamics on the cube:
1579      metric terms are ignored and it is assumed that
1580      there is no sea-ice on cube faces 1, 2, 4, and 5.
1581    
1582    checkpoint52f_post
1583    o added exch2 cube routines to pkg/exch2
1584    o modified hs94.cs-32x32x5 to use it
1585    o added new grid files to hs94.cs-32x32x5
1586    checkpoint52f_pre
1587    
1588    checkpoint52e_post
1589    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1590      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1591    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1592      to work with implicit vertical advection and AB ;
1593    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1594    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1595     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1596    checkpoint52e_pre
1597    
1598    o fix bug in impldiff when Nr=1 or Nr=2.
1599    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1600    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1601    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1602      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1603    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1604    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1605    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1606    
1607    checkpoint52d_post
1608    o re-tiled many expts to allow comparison in multi-processor mode
1609      - updated output accordingly
1610      - changed hs94.128x64x5 to use intial T from file rather than use the
1611        random number generator
1612    o add infrastructure in model routines for fizhi and gridalt packages
1613    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1614    o changes to permit hi-res, cubed-sphere, configuration
1615      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1616      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1617      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1618        of surface winds for the cube
1619      (A verification experiment, based on global_ocean.cs32x15, but with
1620       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1621       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1622       complete with example surface forcing files and matlab scripts to look
1623       at the output and compare it with that of global_ocean.cs32x15.)
1624    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1625       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1626       to conform to the common rule.
1627    o check-in the first version of the coupler + interfaces for multi-components
1628       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1629       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1630       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1631       - ocean and atmos. share the same horizontal grid (no interpolation).
1632       - exchanges between component and coupler is done in forward_step
1633    o new verification experiment, cpl_aim+ocn:
1634       coupled ocean - AIM atmosphere on cs32 grid.
1635    
1636    checkpoint52d_pre
1637    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1638    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1639    
1640    checkpoint52c_post
1641    o Fixing OPTIONS files for use of exf:
1642      - ALLOW_ECCO not needed
1643      - ECCO_CPPOPTIONS.h should not be included from
1644        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1645        as has been the case in the past
1646      - All cal/exf related options are currently set in
1647        single header file. Should remain so until we
1648        agree on a consistent new policy.
1649    o Removed all CPP options for cal package.
1650      cal has no more CPP options.
1651    o modified STOREs in GAD_ADVECTION
1652    o corrected key comp. for passkey
1653    
1654    checkpoint52b_post
1655    o new version: "thsice" of thermodynamic sea-ice pkg:
1656     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1657     - modify fluxes but do not change theta directly;
1658     - light cleaning of bulk_force pkg (still needed with thsice).
1659     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1660       + output_thsice.txt to test thsice & bulk_force pkgs.
1661    o put back grid & coriolis monitor output.
1662    checkpoint52b_pre
1663    
1664    o call "do_the_model_io" at the beginning (=> dump initial state)
1665    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1666    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1667      (need info on NUMBER_OF_PTRACERS)
1668    o missing PTRACERS headers in some routines
1669    o default tamc.h in pkg/autodiff supposed to crash
1670      to ensure proper customization
1671    
1672    checkpoint52a_post
1673    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1674      - moved surfaceTendencyTice from pkg/seaice to main code
1675      - subroutine FREEZE_SURFACE now limits only surface temperature
1676        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1677        => new output.txt for global_ocean.cs32x15 & global_with_exf
1678      - keep the old version of FREEZE for backward compatibility;
1679        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1680      - corresponding modifs for TAF directives
1681    o added surface flux output variables to TIMEAVE_STATVARS
1682    o time-averaged output for pkg/ptracers
1683    o fix problem with ECCO-related divided adjoint
1684      snapshot file was missing some ad-variables,
1685      but no warning issued by TAF
1686    
1687    checkpoint52a_pre
1688    o some bug fixes for #undef REAL4_IS_SLOW
1689    
1690    checkpoint52 = ecco_c52_e35
1691    o after testing adjoints of checkpoint51u_post
1692    
1693    checkpoint51u_post
1694    o this is the post-merge tag of the ecco-branch
1695      (needs another clean checkout and re-testing)
1696    o various natl_box_adjoint configs and results
1697      but no input fields
1698    o obcs adjoint not yet merged!
1699    o adding ECCO global 1x1 and 2x2 degree configs
1700    o updated/extended some store directives for seaice
1701    o pkg/ecco now containes ecco-specific part of cost function
1702    o top level routines the_main_loop, forward_step
1703      supersede those in model/src/
1704      previous input data.cost now in data.ecco
1705      (new namelist ecco_cost_nml)
1706    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1707    
1708    checkpoint51t_post
1709    o this is the pre-merge tag of the ecco-branch
1710    
1711    checkpoint51s_post
1712    o cleanup: removed various obsolete #define-s
1713    o pkg/grdchk
1714      - renamed 'ph-grd 3' to 'grad-res'
1715      - merged from ecco-branch
1716        (remaining bug fixes for obcs gradient checks)
1717      - additional high-precision output for testreport
1718        (grep for 'precision_grdchk_result')
1719    
1720    checkpoint51r_post
1721    o cleaned up or removed CPP_OPTIONS.h files
1722    o updated results for some of the tests to reflect the new
1723      optfiles (-ieee: -O0 instead of -O3)
1724    
1725    checkpoint51q_post
1726    o cd_code:
1727      - moved cd_scheme.F -> cd_code_scheme.F
1728      - separate read_checkpoint from cd_code_ini_vars.F
1729      - separated cd_code part from write_checkpoint
1730      - updated AD_SOURCE, generated .flow
1731      - added CD_CODE_VARS.h to the_main_loop
1732      - Moving cd_code specific store dir.s to pkg/cd_code
1733    o ctrl package totally restructured
1734      - pack/unpack now optional and decoupled from
1735        xx_/adxx_ I/O
1736      - ctrl_pack/unpack cleaned
1737        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1738      - confined inclusion of AD_CONFIG.h to where necessary.
1739    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1740    
1741    checkpoint51p_post
1742    o create initial cd_code package
1743      - WARNING: the initialization of fields within packages
1744        is broken because INI_FIELDS (where READ_CHECKPOINT is
1745        called) is called *before* PACKAGES_INIT_VARIABLES.
1746        This seems to be backwards since
1747        1) its important to initially zero the entire field including
1748           the "halo" region
1749        2) zeroing needs to be done *before* reading pickup info
1750           and the pickup call might or might not happen in any
1751           particular run
1752      - this needs an overhaul for R2
1753    o cleanup verification/*/code/GMREDI_OPTIONS.h
1754    o cleanup testreport
1755    
1756    checkpoint51o_post
1757    o bringing AD-related verif's up to date with genmake2
1758      - carbon/
1759      - global_ocean.90x40x15/
1760      - hs.94.1x64x5/
1761      - (front_relax/ )
1762    o (more) consistent directory structure for AD-related verif.'s
1763    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1764    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1765    o bug fix in find_alpha.F for MDJWF:
1766      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1767        change rho -> rho-rhoConst
1768      - replace call find_rho to find_rhonum
1769    o initialisation of rFlx extended to full array (required by TAF)
1770      and shifted to thermodynamics
1771    o removed PTRACERS.h in ptracers routine
1772    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1773    o Correcting initialisations for fVerU, fVerV.
1774    o helping TAF to recognize dependency on kUp for
1775      fVerU, fVerV
1776    o Replacing delZ by delR in pkg/ctrl/
1777    checkpoint51o_pre
1778    
1779    o undid all of cp51 pending some cleanups and discussion
1780    o added the [#include "AD_CONFIG.h"] statement to all files that need
1781       it for adjoint/tl #defines
1782     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1783     o removed tools/genmake since it no longer works
1784    
1785    checkpoint51n_post
1786    o modifications to make FREEZE flux visible to pkg/kpp
1787      - moved surfaceTendencyTice from pkg/seaice to main code
1788      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1789      - subroutine FREEZE now limits only surface temperature
1790        (this means new output.txt for global_ocean.90x40x15,
1791         global_ocean.cs32x15, and global_with_exf)
1792    o added surface flux output variables to TIMEAVE_STATVARS
1793    
1794    checkpoint51n_pre
1795    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1796    o added [#include "AD_CONFIG.h"] to all files that use the following
1797      defines:
1798      - ALLOW_ADJOINT_RUN
1799      - ALLOW_TANGENTLINEAR_RUN
1800      - ALLOW_ECCO_OPTIMIZATION
1801    
1802    checkpoint51m_post
1803    o incorporating changes to get TAMC/TAF working in genmake2
1804      - added new TAMC/TAF targets to the Makefile
1805      - various cleanups related to package handling
1806      - these changes should have no impact on the forward model
1807    
1808    checkpoint51l_post
1809    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1810     - faster algorithm for cal_addtime.F
1811     - higher precision arithmetic, where needed
1812     - pkg/exf *startdate variables changed from calendar date to
1813       model integration time
1814    
1815    checkpoint51l_pre
1816    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1817    o enable to apply restoring on S & T only in a latitude band.
1818    o update output (external_forcing_surf modif. change truncation errors)
1819       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1820    
1821    checkpoint51k_post
1822    o change default to: useNHMTerms=.FALSE.
1823     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1824       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1825     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1826        exp1, ideal_2D_oce
1827     - change data file of oceanic exp (leave the results unchanged for now)
1828       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1829    o set gravitySign automatically according to the vertical coordinate used
1830      (and change sign: back to "logical" value: +1 when R increases downward)
1831    o added an include barrier to the default CPP_OPTIONS.h and
1832      removed the #include "PACKAGES_CONFIG.h" from it
1833    o fix a bug in mom_fluxform (from chk51j_post)
1834    
1835    checkpoint51j_post
1836    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1837    o adjusted some flow directives (dynamics, thermodynamics)
1838    o added cubed-sphere case to test cost function
1839    o heckpoint_lev?_directives.h now include
1840      pkg-specific directives, whenever those are enabled.
1841    o Moving pkg-specific flow directives to corresponding pkg
1842      Moving pkg-specific differentiation list to corresponding pkg
1843      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1844      ---> conventions are
1845           - pkg_ad.flow
1846           - pkg_ad_diff.list
1847           - pkg_ad_check_lev?_dir.h
1848    
1849    checkpoint51i_post
1850    o merge of the branch-genmake2
1851      - knowingly breaks the older genmake
1852      - automatic generation of all ALLOW_${PKG_NAME} defines
1853      - new testreport supersedes older testscript
1854    o large number of package inclusion and header cleanups
1855    checkpoint51i_pre
1856    
1857    o new output for adjoin of global ocean vector invariant
1858    o fix for checkpoint of thermodynamic seaice and bulk_force
1859    o Steph gchem various cleanups
1860    
1861    checkpoint 51h_pre
1862    o fixed some single quotes
1863    o modify gchem pkg to be more versatile
1864    o modifications to clean up dic pkg
1865    o add pkg/cfc
1866    
1867    checkpoint51g_post
1868    o provide links for ARPACK and ADM*TLM
1869    o start removing verification/vero/
1870    o update AD-related stuff
1871      (in particular some IF-statements in model/src/ routines)
1872    o adding to verification/global_ocean.90x40x15/ adjoint of
1873      vector invariant setup
1874    
1875    checkpoint51f_post
1876    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1877    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1878      of tracer Green's fucntions for ocean inversion project.
1879    
1880    checkpoint51f_pre
1881    o Added on-the-fly spatial interpolation capability
1882        "USE_EXF_INTERPOLATION" to pkg/exf.
1883      - This is a temporary Cartesian-grid hack until
1884        the super-duper ESMF coupler becomes available.
1885      - See verification/global_with_exf/README for usage example.
1886      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1887        flags and modified pkg/seaice accordingly.
1888    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1889        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1890        non-local transport term.
1891    
1892    checkpoint51e_post
1893    o pkg/mom_vecinv:
1894      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1895      - add time-ave diagnostic of vorticity advection.
1896    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1897    o atmospheric geopotential: - include water vapor effect;
1898                                - use p^kappa in p* scaling.
1899    o land pkg: read initial state from files.
1900    o AIM : add stratospheric drag in the upper level
1901    
1902    checkpoint51d_post
1903    o change function ILNBLNK (=> last non-blank char.) to return zero
1904      (instead of the string length) when the string. char is empty
1905    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1906    o modif's to restore TAMC compatibility
1907      - avoid "_d" constructs in PARAMETER declarations
1908      - avoid interrupting lines by comment lines
1909    o Use cluster local disks for purely local I/O
1910      vs. globally visible disks needed for ctrl stuff
1911      (merged from ecco-branch)
1912      - new active_file_loc... and mdsio_..._loc routines
1913      - affected packages: autodiff, ctrl, grdchk, mdsio
1914    
1915    checkpoint51c_post
1916    o introducing integer flag debugLevel
1917      - debLevZero: suppress all output
1918      - debLevA: standard
1919      - debLevB: equivalent to current debugMode=.TRUE.
1920    o introducing pathname variable mdsioLocalDir for mdsio
1921      that can be specified at runtime
1922      (relevant for cluster I/O to local disk)
1923    `
1924    >>>checkpoint51b_post
1925    adjoint of ptracers
1926    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1927    o extended state in checkpoint_lev?, etc.
1928    o alternative ctrl/cost with tr1 or ptracer
1929    o new comlev1_bibj_ptracers
1930    o new ptracers.flow
1931    o made ptracers_forcing same as external_forcing_s
1932    o added verification for adjoint with ptracers
1933      - adm. grdchk fail so far
1934      - tlm. grdchk OK
1935      - checked tapelev/comlev recomputations: OK
1936    <<<checkpoint51b_pre
1937    
1938    checkpoint51a_post
1939    o added code for biogeochemistry package
1940      - new pkgs: dic, gchem
1941      - new subroutine in ptracers
1942    o modify code for biogeo packages
1943      - in model/src and pkg/ptracers
1944    
1945    checkpoint51
1946    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1947      - autodiff, ctrl, exf, grdchk, seaice
1948      kept separate packages
1949      - cost, ecco, obcs
1950    o updating verification/internal_wave, verification/lab_sea
1951      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1952    
1953    checkpoint50i_post
1954    o Preparing next differentiable checkpoint and sync
1955      of MAIN vs. ecco-branch
1956      - 1st step: this one is differentiable
1957      - 2nd step: next(! not this) checkpoint will have updated packages
1958                  from ecco-branch)
1959    
1960    checkpoint50h_post
1961    o new package "land": provide surface BC for AIM.
1962    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1963    o AIM: use true log-P extrapolation for near surface temp (= as in
1964        F.Molteni paper) ; update aim.5l_cs output.
1965    o New variable in PARM03 for more flexible pickups
1966    o somewhat cleaned package initialisation sequence for
1967      ctrl/ cost/ ecco/ in packages_... routines
1968    
1969    checkpoint50g_post
1970    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1971      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1972      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1973        made the default because of faster convergence than ADI
1974    
1975    checkpoint50f_post
1976    o exf totally restructured
1977      - replaced all exf_set_ routines by one generic exf_set_gen.F
1978        and made sure it's still differentiable
1979      - split exf_getffields.F into new exf_bulkformulae.F
1980      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1981      - updated adjoint/makefile and relevant verif. accordingly
1982    
1983    checkpoint50f_pre
1984     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1985          + change Evap over land. (update aim.5l_cs output)
1986     o added missing .cvsignores and made uniform across expts
1987     o changed configuration of tidal_basin_2d expt
1988     o added pkg/debug functions for tracing code in fatal crashes
1989     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1990     o new fn in pkg/monitor to stop model if solution grows too big
1991     o removed lots of single quotes from comments
1992    
1993    checkpoint50e_post
1994    o make KPP work with PTRACERS
1995     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1996       nearly a copy of kpp_transport_s
1997     - there is no analogue to SurfaceTendencyS, so I have to use
1998       gPtr(of the surface layer) instead
1999    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2000    checkpoint50e_pre
2001    
2002    checkpoint50d_post
2003    o change kpp output from multiple-record state files to single-record state
2004      files analogous to write_state.F
2005    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2006      analogous to the cg2d-related output.
2007    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2008      so that writing to internal file fn (with length 512) fails.
2009    checkpoint50d_pre
2010    
2011    checkpoint50c_post
2012    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2013    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2014    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2015    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2016    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2017    
2018    checkpoint50c_pre
2019    Merging from release1_p13:
2020    o bug fix for pkg/seaice dynamic solver
2021    o Added SEAICE_initialHEFF to pkg/seaice
2022    
2023    checkpoint50b_post
2024    o store u*,v* in gU,V instead of in guNm1,gvNm1
2025    o in order to put the momForcing out of the Adams-Bashforth:
2026      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2027      to timestep.F
2028    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2029    o re-generate output for highly sensitive test-exp:
2030       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2031    
2032    checkpoint50b_pre
2033    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2034    o corrected CPP option mismatch in exf_Bulk... functions for case
2035      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2036    
2037    checkpoint50a_post
2038    o Bug fix for merging between c50 and KPP.
2039      ikey was passed from thermodynamics to kpp_calc via
2040      common block rather than being recomputed in kpp_calc,
2041      in contradiction with new key itdkey.
2042      New key ikppkey created, and tamc.h headers updated.
2043    
2044    checkpoint50
2045    - 2nd step of merge with ecco-branch:
2046      merge changes in ecco-branch back into main trunk
2047    - bug fix in find_alpha
2048    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2049    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2050    - merged some sliced AD support routines
2051    
2052    checkpoint49
2053    merged from ecco-branch:
2054    o exf:
2055      - Enable initialisation of forcing fields to constant
2056        (runtime) values.
2057      - in exf_getffields.F
2058        Reduce i-/j-loop to interior domain, discarding overlaps.
2059        That also fixes wrong TAF-key computations for key_1, key_2
2060        with bulf formulae.
2061      - exf_init.F modify #ifdef for exf_init_evap
2062      - exf_getffieldrec.F, ctrl_getrec.F
2063        The following INT-usages are not safe:
2064          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2065          fldcount = int(fldsecs/fldperiod) + 1
2066        and were modified.
2067    o autodiff: checkpoint_lev...
2068      - updated storing for bulk formulae (some arrays were missing)
2069      - added state for seaice package
2070      - synchronized with main branch
2071    o DIVA:
2072      Modif.s in
2073      - the_main_loop.F
2074      - the_model_main.F
2075      and added cost_final_restore.F cost_final_store.F
2076      o With these changes, it is possible to fully separate
2077        the first forward run to compute the cost function (mdthe_main_loop)
2078        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2079        into separate model executions.
2080        This enables better tuning of DIVA to given queue sizes.
2081      o Loss of cost function value in consecutive DIVA runs is
2082        fixed by storing to 'costfinal' file.
2083      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2084        beginning/end of adjoint integration is accounted for.
2085      The current changes apply to TAF-1.4.26.
2086      TAF has one remaining bug, requiring one manual change
2087      (see MITgcm manual).
2088    o cal: synchronized between MAIN and ecco-branch
2089    
2090    checkpoint48i_post
2091    o Changes to restore differentiability of code w.r.t. previous tag
2092      (mostly adding new routines to make list and replacing
2093      pressure by totPhiHyd).
2094    o Updated and merged grdchk package
2095      - has both ADM and TLM checks
2096      - works for single- and multi-proc.
2097      - output cleaned
2098      - worked successfully for parallel DIVA
2099    o genmake:
2100      - Adding -platform=SP4
2101      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2102    o Modif. for DIVA:
2103      ctrl_unpack should not be called in intermediate DIVA interval.
2104      (similar thing would apply for active files such as
2105      tbar, sbar, psbar, which should not be reinitialised;
2106      only relevant for ecco-branch)
2107    
2108    checkpoint48h_post
2109    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2110    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2111    o Added SEAICE_initialHEFF to pkg/seaice
2112    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2113    
2114    checkpoint48g_post
2115    --- EOS:
2116    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2117      store total Potential in totPhyHyd for diagnostics & EOS.
2118    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2119    --- Pressure/geopotential gradient:
2120    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2121    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2122      ( changes results of global_ocean_pressure )
2123    o NLFS + z-coord.: add eta*Rho' contribution.
2124    o accurate phiHyd when using interface-W at the middle between 2 centers
2125     ( changes results of ideal_2D_oce )
2126    o includes r* 2nd term in potential gradient.
2127    
2128    checkpoint48f_post
2129    Merging from release1_p12:
2130    o Modifications for using pkg/exf with pkg/seaice
2131      - improved description of the various forcing configurations
2132      - added basic radiation bulk formulae to pkg/exf
2133      - units/sign fix for evap computation in exf_getffields.F
2134      - updated verification/global_with_exf/results/output.txt
2135    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2136      (SBO) core products, including oceanic mass, center-of-mass,
2137      angular, and bottom pressure (see pkg/sbo/README.sbo).
2138    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2139      to avoid negative values in shallow regions.
2140      - updated verification/natl_box/results/output.txt
2141      - updated verification/lab_sea/results/output.txt
2142    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2143    o Added useSingleCpuIO option (see PARAMS.h).
2144    o Updated useSingleCpuIO option in mdsio_writefield.F to
2145      work with multi-field files, e.g., for single-file pickup.
2146    o pkg/seaice:
2147      - bug fix in growth.F: QNET for no shortwave case
2148      - added HeffFile for specifying initial sea-ice thickness
2149      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2150    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2151      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2152    o pkg/seaice:
2153      - adjoint-friendly modifications
2154      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2155    
2156    checkpoint48e_post
2157    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2158    o dynamics: change definition of computational domain & adapt mom_fluxform
2159      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2160    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2161        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2162        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2163        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2164        inverted_barometer solid-body.cs-32x32x1
2165      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2166    
2167    checkpoint48d_post
2168    o in preparation for r*:
2169     a) use pre-computed gradient of hydrostatic potential:
2170        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2171     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2172        => affects results of glob_oce_pressure (different truncation error)  
2173      update output.txt of ideal_2D_oce & global_ocean_pressure
2174    
2175    checkpoint48d_pre
2176    o in preparation for r*:
2177      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2178      pass the 2 comp. of the grad. as arguments to momentum S/R.
2179      but for the moment, only used if it does not change the results.
2180    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2181    
2182    checkpoint48c_post
2183    Modifications in treatment of initial flux forcing controls
2184    to avoid extra storing of flux fields.
2185    
2186    checkpoint48c_pre
2187  o Added tidal_basin_2d experiment (currently 1D!)  o Added tidal_basin_2d experiment (currently 1D!)
2188  o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)  o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2189    

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