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revision 1.457 by dimitri, Mon Feb 21 05:34:17 2005 UTC revision 1.757 by mlosch, Wed Dec 20 12:27:02 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 fix multi-category seaice:
8     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
9       SEAICE_MULTICATEGORY
10     - fix short wave heat flux
11    o Initial check-in of lab_sea adjoint
12      (very similar to natl_box_adjoint/code_seaice)
13      * used C-grid and EVP solver
14      * used KPP, GM/Redi
15      * uses inAdExact=.TRUE.
16      * gradient checks fail for both ADM and TLM
17        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
18        f.d. gradients actually seem more problematic than ADM, TLM gradients;
19        issue is related to forward mismatch between g77 an ifort
20    o pkg/seaice: overhaul of thermodynamics
21     - growth.F and groatb.F are replaced by new routine seaice_growth.F
22     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
23     - move a few global fields out of SEAICE.h into seaice_growth.F and
24       make them 2D (FICE/QNETO/ ...)
25     - remove FO (it is the same as QNETO)
26     - introduce a few local fields to avoid modifying external fields such
27       as atemp, etc.
28    
29    checkpoint58s_post
30    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
31      changed exf_set_gen.F so that
32        genperiod=0 means input file is one time-constant field and
33        genperiod=-12 means input file contains 12 monthly means
34    o CG2D: use pre-computed solver main-diagonal (stored in common block);
35      this affects truncation error ; generate new output file for exp. which
36      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
37        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
38        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
39        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
40        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
41        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
42    o start implementation of deep-atmosphere and anelastic formulation
43    o verification: remove 2nd copy of input files and use script "prepare_run"
44      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
45    o mom_common/vecinv/fluxform: fix a few initialisation isssues
46    o profiles: fix for multithreaded case
47    
48    o diagnostics: rename few diags:
49      s/'PRESSURE'/'RCENTER '/g
50      s/'TICE    '/'oceFreez'/g
51      s/'TAUX    '/'oceTAUX '/g
52      s/'TAUY    '/'oceTAUY '/g
53      s/'SWFLUX  '/'oceQsw  '/g
54      s/DIFx/DFxE/g
55      s/DIFy/DFyE/g
56      and add few ocean-forcing diagnostics:
57      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
58    o modifications to pkg/seaice/growth.F and budget.F, which change results of
59      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
60      as actual snow thickness.  It now refers everywhere to effective snow
61      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
62    
63    checkpoint58r_post
64    o modifications to pkg/seaice/growth.F, which change results of
65      lab_sea experiment: fixes pertain to melting snow over open water, to
66      masking EVAP under sea ice, and to using the correct AREA variable for
67      computations of EVAP, PRECIP, HSNOW, and GHEFF
68    o add ability to read bathy, salt, and theta using MNC (off by def)
69    o add flooding algorithm and advection of HSNOW for pkg/seaice;
70      both are turned off by default and do no change any results
71    o seaice advection with pkg/thsice: a step toward the use of non-linear
72      advection scheme, but #ifdef or commented out for now (requires more EXCH).
73    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
74      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
75      in natl_box (affects results @ truncation level: update output.txt)
76    o multi-threading and IO:
77      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
78      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
79        (needed to work with SingleCpuIO): tested in all verif. exp.
80    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
81      affects the results (but none of the verification test uses this scheme).
82    o Adding some pkg/diagnostics capability to pkg/seaice
83      (will certainly be subject to changes)
84    o ctrl: adding new control variables:
85      lwflux, lwdown, evap, snowprecip, apressure, runoff
86    
87    checkpoint58q_post
88    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
89      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
90      high_res_cube configuration by 4% on Columbia.
91    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
92      add (in global_with_exf/code) a version of EXF_INTERP_READ without
93      dynamical allocation (seems to work in multi-threaded).
94    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
95      single CPU io) so that TAF does not have to see EESUPPORT.h
96    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
97    
98    checkpoint58p_post
99    o obcs: stop if obcs is used with useCDscheme = .true.
100    o shelfice:
101     - fix a sign error so that no slip at shelfice interface works
102     - remove stop for combination non-hydrostatic code and shelfice. That does
103       not mean, that the results are correct, but at least they are numerically
104       stable
105    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
106    o added adjoint exch routined for all exch*3d* routines
107      and updated flow directives
108    
109    checkpoint58o_post
110    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
111      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
112    o change controling S/R for writing pickup file (new S/R do_write_pickup)
113      and clean-up reading/writing of pickup files.
114    o fix local version of read/write pickup (NH part) in rotating_tank/code
115    o simplify EXCH interface:
116     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
117     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
118    o added the regrid package
119    o shelfice:
120     - add a simple boundary layer scheme to reduce noise
121     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
122    
123    checkpoint58n_post
124    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
125       local variable (not in common block).
126    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
127      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
128      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
129        to work with SingleCpuIO.
130    o add "_d 0" to real constant of pkg/cfc subroutines ;
131       update exp. cfc_exemple & tutorial_cfc_offline output files.
132    o multi-threading and IO:
133      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
134        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
135      - barrier before and after reading.
136      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
137      - avoid using MDS_WRITELOCAL for LAND pkg output.
138      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
139        common-block variables ; Allows multi-threading with master-thread IO.
140    o change default MAX_NO_THREADS from 32 to 4 ;
141      and stop cleanly when MAX_NO_THREADS is too small.
142    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
143    
144    checkpoint58m_post
145    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
146       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
147    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
148       keep global_ocean.90x40x15 (for AD testing) with former secondary test
149       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
150    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
151        add MITgcm_tutorials (= code + all the tutorials)
152    o ecco, option to compute cost for total ssh (mean+anom)
153    o consistent with addition of ptracer and ssh in pkg/profiles
154    o profiles: adding ptracer and ssh
155    o testreport: change multi-test output-file name
156      (from output.txt.{name} to output.{name}.txt)
157    o profiles: now ok for mutli-tiles case
158    o seaice: add 4 parameters for different advection schemes for area,
159      (effective) seaice thickness, enthalphy, and snow height. Their default
160      is the standard parameter SEAICEadvScheme
161    o calc_gw:
162     - add cosFacU in zonal viscous flux (harmonic.visc.).
163     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
164       of tutorial_plume_on_slope.
165    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
166    o calc_gw: true flux-form, account for horizontal grid spacing.
167      update rotating_tank results, but not plume_on_slope (affected at
168      truncation level, 11 digits).
169    
170    checkpoint58l_post
171    o calc_gw:
172     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
173     - remove side-drag for now (need to fix it); update plume_on_slope results.
174     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
175    o commit code to make SST/SSS weights spatially variable
176      (based on either variable in-situ or variable initial T/S weights)
177    o pkg/ecco:
178      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
179        now based on horizontally varying weights wthetaLev, wsaltLev
180      * cost_averagesflags now returns year indices in addition to day, month
181      * sflux balance is performed on annual basis
182        (sflxumm, sfluxmm2, bal_sfluxmm)
183      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
184        including separate counting and multipliers
185    o pkg/rbcs
186      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
187    
188    checkpoint58k_post
189    o testreport:
190     - always build in dir. "build" (if not there, mkdir build instead of building
191       & running in input)
192     - run in dir run (if it exists), in build otherwise.
193     - call prepare_run (if input/prepare_run exists)
194     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
195    o pkg/exf modifications to interpolation and rotation routines for more
196       reasonable treatment of North Pole singularity: for tracers North Pole
197       value is set to northernmost zonal-mean value, for zonal velocity it is
198       set to zero, and for meridional velocity it is set to northernmost value.
199    o pkg/exf/exf_check_range.F
200     - add tile index to diagnostics and move stop statement to the very
201       end of the routine.
202    o pkg/diagnostics: (diagnostics_main_init.F)
203      define title of isomorphic variables according to the current config.
204    o pkg/thsice with pkg/seaice dynamics:
205    - fix domain of computation (interior only, required for exf) and do exchanges
206    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
207    o towards a standard way of dealing with multi-threading in MONITOR
208      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
209    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
210       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
211    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
212    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
213    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
214       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
215    o tracer advection:
216     - clean-up and simplify calc_common_factors.F
217     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
218       advection subroutine (but still not used within DST advection S/R)
219    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
220    
221    checkpoint58j_post
222    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
223      from file (collects calls previously in FORWARD_STEP)
224    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
225    o adjoint store dir. adjusted accordingly
226    o genmake2
227      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
228    
229    checkpoint58i_post
230    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
231      on wind stress (SEAICEstressFactor defaults to 1.)
232    o Total number of Timers is finite (<=40): comment out 2 non-essential one
233      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
234    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
235      on CS-grid: no longer loosing mass.
236    o exf & curvilinear-grid: no longer modify longitude xC & xG.
237    o pkg/ggl90: fix sloppy output and fix a bug
238    o pkg/seaice: added SEAICEuseEVPpickup parameter
239      - Set to false in order to start EVP solver with
240        non-EVP pickup files when using SEAICEuseEVP
241      - fix sign error in diffusion in seaice_calc_rhs
242    
243    checkpoint58h_post
244    * Modifications for bottom topography control
245      o replace hFacC by _hFacC at various places
246      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
247      o add non-self-adjoint cg2d_nsa
248      o update autodiff support routines
249      o re-initialise hfac after ctrl_depth_ini
250      o works for 5x5 box, doesnt work for global_ocean.90x40x15
251    * Adding verification for 5x5 box (4-layer) bottom topography control
252    
253    checkpoint58g_post
254    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
255       used for mean seasonal cycle, mean diurnal cycle); add an example
256       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
257    o pkg/ggl90:
258      - add parameter (minimum surface kinetic energy)
259      - fix bug (avoiding division by zero)
260    o couple pkg/thsice to pkg/seaice:
261      - modify advection in seaice to accomodate new scalar fields to be advected
262      - only muliDimAdection scheme work with seaice/thsice
263      - mapping of thsice-variables to seaice-variables, back and forth
264      - does not break the verification experiments, but does not give the
265        desired results either
266    o pkg/seaice
267      - make (default) second order advection a bit less confusing?
268    
269    checkpoint58f_post
270    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
271      to pkg/seaice):
272      - new routines thsice_map_exf and thsice_get_exf provide the interface
273      - add an additional formal parameter to thsice_solve4temp
274    o pkg/exf:
275      - add new fields wspeed, snowprecip (to be able to couple to thsice)
276      - correct Stefan-Boltzmann constant
277      - new parameter for longwave surface emittance
278      - separate some stuff from exf_bulkformulae into new routines  
279        exf_radiation, exf_wind
280      - add new parameters and constants: longwave emissivity for ocean, ice
281        and snow, evaporation parameters over ice
282      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
283        either wind from stress or stress from wind
284    o pkg/thSIce:
285    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
286    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
287       and THSICE_CALC_THICKN
288    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
289    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
290      to make debugging easier.
291    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
292    o pkg/bulk_force:
293      - clean-up comments and parameters ;
294      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
295    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
296      generate new output for test-experiment: aim.5l_cs.thSI
297    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
298      testreport accordingly
299    
300    checkpoint58e_post
301    o SEAICE_CGRID adjoint done
302    o R_STAR adjoint implemented.
303      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
304      * need to sort out init. of h0facc, etc.
305    o Make pkg/profile fully independent of ecco,cost, etc. stuff
306      to be able to use it in pure forward.
307    
308    checkpoint58d_post
309    o upgrade simple test-experiment to tutorial example:
310     step.1: duplicate the experiment and (step.2) will remove the old copy.
311      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
312      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
313      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
314      tutorial_global_oce_biogeo    <- copy of dic_example
315      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
316      tutorial_plume_on_slope       <- copy of plume_on_slope
317      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
318      tutorial_global_oce_optim     <- empty for now (David ?)
319      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
320     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
321    o correct a sign problem in cost_scat.F
322    o obcs and ptracers: fix boundary conditions for advections schemes
323      with larger stencil
324    o thsice adjoint: start
325    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
326      completeness
327    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
328      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
329    o ptracers adjoint:
330      * avoid extensive recomputatations
331      * fix missing re-init. of gptr (missed by TAF)
332    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
333      me to turn off the excessive output to STDOUT that this package produces
334    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
335      and add those terms in Vector-Invariant formulation.
336    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
337      if the control period (xx_hfluxperiod etc) is 0
338    o in profiles pkg, clean routines and fix details
339    o in ecco pkg, reading ssh data:
340      fix problem in case the model does not start at iter0=0
341    o fix mnc-pickup/restart for ptracers
342    o new package prifiles:
343      code to compute profile-based cost by Gael Forget
344      (modifs in ecco, ctrl, autodiff)
345    o Benign bug fix in initialization (spotted by M. Mazloff) of
346      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
347    
348    checkpoint58c_post
349    o adjoint: finish NLFS adjoint and provide reference output in
350      verification/global_ocean.90x40x15/results_ad_nlfs
351    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
352      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
353      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
354      with SEAICE_CGRID defined.
355    o move calendarDumps from "data" to "data.cal" and clean-up the code
356      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
357    o add useEXF & useCAL flags (for now, set in hard-coded way)
358    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
359      (were missing in NH mode, and wrong in quasihydrostatic mode).
360      waiting for Chris updated version of calc_gw to add those CALLs.
361    o fix bug in quasihydrostatic S/R ;
362      add a test for this option: global_ocean.90x40x15.qshyd
363    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
364      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
365    o add on/off flag useOffLine for package OFFLINE
366    o seaice:
367      - modify advection so that it works also on the C-grid
368      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
369        problem in multi-tile runs with C-grid
370      - add flags for clipping ice velocities and/or masking solver forcing
371      - fix drag (ocean on ice) formulation and a bug that caused noise in the
372        C-grid solver
373      - added a few comments to seaice_diffusion.F
374      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
375        are now exclusive)
376      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
377        required re-ordering the code a little:
378       + make DAIRN global variable (defined in SEAICE)
379       + move computation of the viscosities eta and zeta into a new separate
380         routine (because I need to recompute them in seaice_ocean_stress.F)
381    
382    checkpoint58b_post
383    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
384      update output.txt of exp. aim.5l_cs.thSI
385    o various mnc cleanups and improvements:
386      + shrink lookup tables by factor of ~4
387      + better error reporting when running out of lookup space
388      + able to handle longer path/file names (up to 500 chars)
389    o adjoint:
390      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
391      - TBD: "hidden" mom_vecinv recomp. in dynamics
392    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
393     (allow to differentiate between forcing components using new integer flags:
394      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
395     and add new flag to put Dissipation tendency out of Adams-Bashforth.
396    o ecco
397      - enable trend removal from SSH anomaly obs.
398    o adjoint
399      - a fix for PmEpR when #undef EXACT_CONSERV
400      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
401      - try to fix "hidden" recomp. in forward_step for NLFS
402        (NLFS seems broken sometimes after I checked it in)
403    o seaice:
404     - add c-grid version of the dynamic solver:
405       + three new routines that are the c-grid substitute lsr, dynsolver
406         and ostres
407       + put a few fields that were local to dynsolver into global common
408         blocks, so that I can move the computation of stresses etc into
409         seaice_lsr (saves coding but may break the adjoint).
410     - replace more hardwired parameters by runtime parameters
411     - add ice masks that mask the rhs of the implicit solvers where there
412       is no ice (commented out in seaice_dynsolver, because i am not sure
413       if this works properly), eventually this should replace the clipping
414       of ice velocities in seaice_dynsolver to +/-40cm/s.
415    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
416      include it only where its needed
417    o move balancing of fluxes before the call of external_forcing_surf
418    o seaice:
419      - correct units of turning angles (now they are really in degrees)
420      - move computation of GWATX/Y out of main routine into dynsolver
421      - initialize GWATX/Y in seaice_init
422    o Apply mask on Fresh-Water flux (needed for SSH forcing).
423      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
424    o seaice: add runtime flags for turning angles (default to zero)
425    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
426      and trend from exf forcing and ctrl control adjustments
427    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
428      (since checkpoint57x_post)
429    o change the default rotation period to 86164.s = the Earth rotation
430    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
431      and based on a reference stratification. Tested within hs94.cs-32x32x5.
432    o seaice advection: add code for choosing between the default (2nd order
433      central differences) and multiDim advection schemes provided by
434      pkg/generic_advdiff
435    o seaice:
436      - removed all references to SEAICE_GRID.h fields from
437        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
438        (cubed-sphere configuration will change a little)
439      - grid computations in seaice_init are obsolete now.
440      - cleaned up code a little so that is easier to read (hopefully).
441      - added new (better?) discretizations of default advection and diffusion
442        (turn on with SEAICEuseFluxForm)
443      - replace 1 in 3d global fields by kSurface in growth.F
444      
445    checkpoint58a_post
446    o seaice:
447      - bug fix in advect.F
448    o shelfice:
449      - separate shelfice load anomaly from pload (breaks with time
450        dependent forcing), => introduce constant field shelficeLoadAnomaly.
451        Its default is 0., but it may be computed more cleverly from (unknown)
452        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
453        done offline. A good approximation of the pressure load anomaly is
454        necessary to avoid large initial adjustment processes underneath
455        deep-reaching shelfice.
456      - small fix in ISOMIP shelfice_thermodynamics
457      - add more sophisticated thermodynamics of Hellmer (1989), this is
458        now the default
459      - give a few constants more intuitive names
460    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
461      if bulk formulae are used in long integration (especially EmPmR). Turn
462      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
463      if balancePrintMean, the imbalance that is substracted is printed to
464      STDOUT.
465    o fix bug (typo) in obcs_apply_eta.F
466    o add a new package shelfice which enables us to model the circulation
467      underneath shelf-ice with draughts of hundreds of meters.
468     - works
469     - to do: + include improved thermodynamics
470              + check whether kSurfC (from model/inc/SURFACE.h) can be used
471                instead of new field kTopC
472              + can we use topoFile, Ro_surf and existing code in ini_depth.F
473                instead of new field R_shelfIce and new code in ini_depth.F
474                and ini_mask_etc.F?
475              + adjust vertical mixing schemes?
476    o seaice pkg:
477     - add a cpp-flag to include a simple formula for a salinity dependent
478       freezing point of sea water at the surface
479     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
480       meridional stresses are now different (and hopefully correct)
481    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
482       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
483       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
484    o pkg/diagnostics: add options and parameters for regional-statistics
485       diagnostics ; define regions by reading a region-mask from a file
486       (might add other options later)
487    o pkg/bulk_force:
488     - add option and parameters to use AIM surface-flux formulae.
489     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
490       others forcing fields (defined in PARM05, parameter file "data") are loaded
491       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
492     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
493     - use the right EXCH call for uwind,vwind (to work on CS-grid).
494     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
495       and parameters (note: calcWindStress replaces .NOT.readwindstress).
496     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
497    
498    checkpoint58
499    o add "--embed-source" option to genmake2 which, when the supporting
500      tools can be compiled (as determined by genmake2) will turn on the
501      embed_files package which then embeds the entire MITgcm source code
502      (*.[fFhc] + Makefile) used for the build within the executable
503      - requested by CNH but off by default
504      - adds a paltry <9MB to the mitgcmuv executable in most cases
505      - only writes the output when useEMBEDSRC in eedata is true
506    o clean up 3-dim. relaxation codes:
507      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
508      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
509      * Thanks to Tom Haine for testing!
510    
511    checkpoint57z_post
512    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
513      affects output (@ truncation level) of exp. plume_on_slope ; updated.
514    o fix the pickup behavior for obcs in combination with ptracers
515    o fix a bug in ptracers_external_fields_load
516    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
517      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
518    o transfered surface NH pressure to eta field (if exactConserv).
519    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
520         and update lab_sea output.txt file.
521    o completing 3-dim. relaxation code: additional term
522         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
523      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
524      * At compile time, in "EXF_OPTIONS.h" set
525          #define  ALLOW_CLIMTEMP_RELAXATION
526          #define  ALLOW_CLIMSALT_RELAXATION
527      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
528          tauThetaClimRelax3Dim = 15552000.0,
529          tauSaltClimRelax3Dim  = 15552000.0,
530      * 3 cases:
531          1) Use a constant-in-time 3-dim. field
532          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
533          3) Real-time relax. to time-evolving prescribed field
534    o Adding Laplacian-type smoothness constraint on
535      initial and boundary (forcing) controls (ic, bc)
536      * enable at compile-time via
537        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
538      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
539      * Absolute scale somewhat unclear so far
540      * no area weighting was included since no other cost term does so far
541    
542    checkpoint57y_post
543    First step for a NLFS adjoint
544    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
545    o new init. routines for calc_r_star, calc_surf_dr
546    o still need to deal with ini_masks_etc
547    o testreport seemed happy
548    checkpoint57y_pre
549    
550    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
551    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
552    o add new offset feature to offline pkg (plus minor cleanup)
553    o cfc fixes for final year of integration
554    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
555      be in GCHEM_OPTIONS).
556    
557    checkpoint57x_post
558    o fix testreport Pb in multiple test experiment.
559    o cleanup our namelist syntax in verification:
560      - make it more F95 standards compliant (some work still needed)
561      - allows the vast majority of our tests to work with gfortran
562    o Non-Hydrostatic:
563     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
564     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
565    o Allow to apply AB on T,S rather than on AB(gT,gS):
566     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
567     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
568       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
569     - need a "clever" read_pickup to restart from the other AB formulation
570    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
571    o remove some unused variables (reduces number of compiler warnings)
572    o adjoint
573      * Disable useVariableViscosity for adjoint for time being
574        (there are a number of extensive recomputations)
575      * Initialize certain variables needed for adjoint
576    
577    checkpoint57w_post
578    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
579                 fix the singleCpuIO RS version of MDSWRITEFIELD
580       and add a WARNING if using globalFiles=T with multi-processors.
581    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
582      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
583    o tracer advection scheme:
584      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
585       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
586       was not very convenient).
587      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
588       (further tests needed for the implicit DST & Flux-Limiter schemes).
589    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
590      and sRef for convenience, handy, when you want to initialize
591      ptracers in a large domain with a constant non-zero value. Also,
592      untangle ptracers_init.F a little.
593    
594    checkpoint57v_post
595    o change dome exp. to use variable viscosity in side-drag terms.
596    o remove all the files from the cfc_offline test since they are now
597      incorporated into tutorial_cfc_offline which has been producing
598      identical results for a few days of testing
599    o add new parameter: sideDragFactor to enable half-slip-side BC
600      and change side-drag S/R to use viscosity from mom_calc_visc
601      (can switch back by setting sideDragFactor=0.); affects results at
602      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
603       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
604    o vorticity & strain are now computed without masking, to account for
605      no-slip-side BC in variable viscosity calculation ; mask is applied
606      anyway later on, before computing advection/coriolis terms.
607    o modify exp4 to test new obcs support for reading from external files
608      and for passive tracers
609    o fix behavior of ptracers_monitor when monitor output is written to a
610      netcdf-file; still not independent of monitor.F (writes in the same
611      file).
612    o change default value of tRef (put a uniform, meaningful value for ocean
613      & atmos) and initialize sRef (was missing, as Martin mentioned).
614    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
615      to be proportional to enstrophy dissipation length.  Thus,
616       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
617      This is now consistent with Smagorinsky and with the manual.
618    
619    checkpoint57u_post
620    o OBCS and PTRACERS: add open boundary support for passive tracers
621      - either use homogenous (pseudo) v.Neumann conditions or prescribe
622        OB-values from file; this is not different from the way theta and salinity
623        are treated
624      - however, Orlanski-radiation conditions are not supported, and the model
625        will stop if you use pTracers and Orlanski at the same time.
626      - beefed up the rountine obcs_external_fields_load: now only those open
627        boundary values are overwritten with values from files for which there
628        are really files, otherwise the OB-fields remain untouched. This makes
629        it possible to use different OBs at different ends of the domain (as
630        with EXF)
631    o reduce number of exch calls in shap_filt (s2).
632    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
633      truncation level) 4/5 MLAdjust test results (11&12 digits match).
634    
635    checkpoint57t_post
636    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
637    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
638      same truncation, independent of the face number: affects affects several
639      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
640    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
641      note that biharmonic viscosity + no-slip was not tested in any experiment.
642    o fix bug in non-linear free-surf side-drag ; generate new output for
643      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
644    o make mnc honor the writeBinaryPrec flag for most kinds of output
645    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
646    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
647      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
648    o add brackets in multi-terms sum to get same truncation, independent of
649      the face number (manage to get exactly same value of gU,gV at the cs-edge)
650      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
651    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
652      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
653      a maximum grid-scale Reynolds number.  Also, changes all length calculations
654      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
655      Suggested values of viscosity parameters found in mom_calc_visc.
656      Many new viscosity diagnostics available.
657    
658    checkpoint57s_post
659    o Add clearing-house for viscosity calculations, mom_calc_visc and
660      correct numerous bugs in LeithD and Smagorinsky discretizations.  
661      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
662      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
663      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
664      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
665      The Strain-Tension form is now called with useStrainTensonVisc=.true.
666      ViscAhStrain and viscAhTension are now retired.
667    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
668    o In response to JMC's bug report, genmake2 now ignores any soft-links
669      that it finds in the *current* directory when searching for files.
670      Soft-links found in any other source directories will still work as
671      they did before.
672    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
673      a C routine to unlimit the stack size
674    o mnc-ify pkg/aim snapshot vars
675    o mnc-ify pkg/land as requested by Daniel
676    o various changes to mnc including:
677      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
678      - output can now be grouped so that all files within a group
679          change the ITER portion of their names in lock-step together
680      - can now read ("global") PER-FACE (in addition to PER-TILE) files
681          and works with both EXCH1 and EXCH2 (but needs more testing)
682      - writing works for all verification test cases w/ g77 on Linux
683    
684    checkpoint57r_post
685    o make MNC variable initialization happen earlier
686    o add diagnostics for (almost) each term of the momentum Eq.
687    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
688    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
689    o remove MINIMAL_TAVE_OUTPUT option ;
690      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
691    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
692      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
693    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
694    o add time-dependent SST, SSS control
695    o cost terms in ecco/ modularized (new cost_generic.F)
696    o cost_averages routines are modularized (new cost_averagesgeneric.F)
697    o new infrastructure for seaice model vs. obs misfits in seaice/
698      * driver from the_main_loop.F is seaice_cost_driver.F
699      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
700      * gradient check in Exp. 6a of natl_box_adjoint/
701    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
702      (see README file)
703    
704    checkpoint57q_post
705    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
706    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
707      - bug was reported by Jean-Michel and Ian Fenty
708    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
709      update exp. cpl_aim+ocn output.
710    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
711      Needed for high-res. runs with large global files
712      to be able to limit tapelev size
713    o Changed some tests for adjoint:
714      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
715      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
716      * global_ocean.90x40x15/ back to default 3-level checkpointing
717    o Modifications to enable scripted COMMON to MODULE conversion
718      * verification/OpenAD/code/ has necessary scripts and description;
719      * converts, compiles and runs successfully;
720    
721    checkpoint57p_post
722    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
723    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
724      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
725    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
726    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
727      (was already the case for dissipation with mom_vecinv,
728       and also the case for grad.PhiHyd when staggered-timeStep)
729      This will allow to put dissipation out-off the AB time-stepping.
730     Unfortunately, affects truncation error. Update output of exp. that "fails"
731      (cg2d matching number) and leave the others for later: front_relax(10),
732      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
733      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
734    
735    checkpoint57o_post
736    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
737      (2) its ready to be documented during the 20050801 DocFest
738    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
739      for ideal_2D_oce and lab_sea on linux_ia32_g77
740    o set to #undef CTRL_SET_OLD_MAXCVARS_30
741      in global1x1_tot/code_seaice_adj to access indices 32, 33
742      (worth another tag)
743    
744    checkpoint57n_post
745    o adding precip control xx_precip 32
746    o adding swflux control xx_swflux 33
747    o Replacing 10 forcing penalty cost routines by 1 generic.
748    o Implementing partitioning in time-mean and variable adjustment
749      for atmos. state.
750    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
751    o in natl_box_adjoint:
752      * updated exp 1 to 10
753        (but does not have time-mean vs. variable split results yet)
754    o updated global1x1/*_seaice_adj/
755      to incorporate latest changes
756    o enable useSingleCpuIO for mdsio vector routines
757      (applies in particular to tapelev I/O)
758    o removed inefficient K-loop in all active_file*control*.F
759    
760    checkpoint57m_post
761    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
762      and advect_cs (use EXCH-2 and standard cs-32 grid files).
763    o pkg/exch2: filling of face-corner halo regions is optional
764      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
765    
766    checkpoint57l_post
767     tag before updating tutorials (pre-release-2)
768    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
769       for output and interpolation of input fields onto model grid)
770    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
771       Affects results of exp. rotating_tank ; update output.txt.
772    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
773          and taking the square quantity and/or using a fraction-weight field.
774    o fix aim_diagnostics_init.F mate numbers.
775    o add mnc output capability to diagnostics/diagstat and update
776      our cvsignore files for the ACSII output generated
777    
778    checkpoint57k_post
779    o lab_sea now uses diagnostics package and provides a suite of
780      new EXF diagnostics output.
781    
782    checkpoint57j_post
783    o exf
784      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
785        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
786        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
787      * extended diagnostics output
788        - now includes all EXF variables
789        - hs, hl moved to common block
790        - separate S/R for diagnostics, called after ctrl vector is added
791        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
792        - EXFqnet contains true Qnet (i.e. includes qsw)
793      * updated verif. lab_sea, global_with_exf
794      * Rearranging hflux (exf_mapfields -> exf_getforcing)
795        to ensure that diagnostics sees a true EXFqnet
796    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
797    o diagnostics pkg: change pointers so that 1 diagnostic can be used
798      several times with different frequencies.
799    o mnc-ify the thsice package as requested by Daniel Enderton
800      - the monitor--MNC output needs work
801      - many attributes need to be added (most are currently blank)
802    o mnc-ify theaim_v23 package as requested by Daniel Enderton
803      - many attributes need to be added (most are currently blank)
804    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
805    o add Sadourny like discretization to the 4th.O vorticity advection scheme
806    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
807      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
808         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
809    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
810     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
811    
812    checkpoint57i_post
813    o Diagnostics package was changed: diagnostic allocation is now deactivated
814      by setting an empty file name in the namelist (used to be by setting 0 frequency)
815    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
816      add 1rst Order upwind vertical Shear.
817    o add a quick fix for A/B checkpointing in OFFLINE mode
818    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
819      end-run around the C/Fortran linking horror in eesup/src/timers.F
820    o added pkg/runclock: allows user to terminate run based on wall clock
821    o added non-hydrostatic scaling parameter: nh_am2
822    o pkg/my82: futile attempt to make results compiler-independent by adding
823      some "_d 0", etc. no effect.
824    o for mnc output, fill the 'T' coordinate var with myTime and create a
825      separate 'iter' variable for iteration count
826    o pkg/diagnostics:
827      add new capability: output of Global/Regional & per-level statistics ;
828      tested against monitor output (including land & thSIce) on various exp.
829    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
830    
831    checkpoint57h_done
832      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
833      data.diagnostics, data.gchem, data.ptracers) is done.
834    
835    o pkg/diagnostics: prepare for Global/Regional statistics.
836      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
837    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
838      and rename it: DIFFERENT_MULTIPLE
839    
840    checkpoint57h_post
841    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
842    o pkg/diagnostics: change output frequency, now in seconds (instead
843      of Nb of iterations). This requires to change data.diagnostics.
844    checkpoint57h_pre
845    
846    o in mnc, let the user create the output dir if both mnc_outdir_date
847      and mnc_outdir_num are false
848    o add fflags() to pkg/diagnostics which allows one to specify, on a
849      per-file basis, the file precision [default behavior is unchanged]
850    o added diagnostics to pkg/kpp, including computation of mixed layer
851      depth based on a temperature/density criterion
852    o updated verification/natl_box to test the new pkg/kpp diagnostics
853    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
854    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
855    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
856      not mnc -- this mistake was found by JMC and is now corrected
857    
858    checkpoint57g_post
859    o add Adams-Bashforth 3rd Order time stepping:
860      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
861      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
862    checkpoint57g_pre
863    
864    o make lambda[Theta,Salt]ClimRelax spatially varying
865      (default remains spatially uniform constant based on tau)
866    o added new control variables
867      * init. uVel, vVel, etanN
868      * lambda[Theta,Salt]ClimRelax
869    o separate masks used for ctrl_pack/unpack 'from write_grid' output
870      (suggested by G. Forget)
871    
872    checkpoint57f_post
873    o add parameter "baseTime" = model base time = time at iteration zero
874      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
875      account for baseTime shift
876    o move Coriolis arrays from PARAMS.h to GRID.h
877    checkpoint57f_pre
878    
879    o mnc-ifying the seaice package
880    o introduced an alternative length scale calculation for use in the limiting
881      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
882    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
883    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
884      as well as grad(vort3).  Made it compatible with both approximate form
885      for the cubed sphere and full form of these gradients.  Added flag
886      useFullLeith to select between approximate and full form.  
887    o add "d0" in getcon.F to reduce differences between compilers/platforms
888      update output.txt of exp. fizhi-gridalt-hs
889    o change port_rand funtion to allow to set the seed.
890    o fix obscure MNC bug involving conversion between reals and integers
891      - it caused no problems with certain (eg. gcc, ifc) compilers but the
892        new version is now more standards-compliant
893    o adjoint-related modifications
894      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
895      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
896      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
897    
898    checkpoint57e_post
899    o Adding eddy stress controls a la Ferreira et al.
900    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
901    
902    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
903      update output.txt of exp. fizhi-gridalt-hs
904    o add more "Z" dimensions and associated coordinate vars to MNC
905  o pkg/exf: added twoDigitYear capability for option useExfYearlyFields  o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
906  o parameter calendarDumps: when set, approximate months (30-31 days) and years  o parameter calendarDumps: when set, approximate months (30-31 days) and years
907    (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,    (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,

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