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revision 1.526 by heimbach, Sat Jul 30 11:47:39 2005 UTC revision 1.692 by jmc, Thu Jul 6 00:29:49 2006 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o testreport:
8     - always build in dir. "build" (if not there, mkdir build instead of building
9       & running in input)
10     - run in dir run (if it exists), in build otherwise.
11     - call prepare_run (if input/prepare_run exists)
12     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
13    o pkg/exf modifications to interpolation and rotation routines for more
14       reasonable treatment of North Pole singularity: for tracers North Pole
15       value is set to northernmost zonal-mean value, for zonal velocity it is
16       set to zero, and for meridional velocity it is set to northernmost value.
17    o pkg/exf/exf_check_range.F
18     - add tile index to diagnostics and move stop statement to the very
19       end of the routine.
20    o pkg/diagnostics: (diagnostics_main_init.F)
21      define title of isomorphic variables according to the current config.
22    o pkg/thsice with pkg/seaice dynamics:
23    - fix domain of computation (interior only, required for exf) and do exchanges
24    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
25    o towards a standard way of dealing with multi-threading in MONITOR
26      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
27    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
28       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
29    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
30    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
31    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
32       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
33    o tracer advection:
34     - clean-up and simplify calc_common_factors.F
35     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
36       advection subroutine (but still not used within DST advection S/R)
37    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
38    
39    checkpoint58j_post
40    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
41      from file (collects calls previously in FORWARD_STEP)
42    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
43    o adjoint store dir. adjusted accordingly
44    o genmake2
45      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
46    
47    checkpoint58i_post
48    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
49      on wind stress (SEAICEstressFactor defaults to 1.)
50    o Total number of Timers is finite (<=40): comment out 2 non-essential one
51      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
52    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
53      on CS-grid: no longer loosing mass.
54    o exf & curvilinear-grid: no longer modify longitude xC & xG.
55    o pkg/ggl90: fix sloppy output and fix a bug
56    o pkg/seaice: added SEAICEuseEVPpickup parameter
57      - Set to false in order to start EVP solver with
58        non-EVP pickup files when using SEAICEuseEVP
59      - fix sign error in diffusion in seaice_calc_rhs
60    
61    checkpoint58h_post
62    * Modifications for bottom topography control
63      o replace hFacC by _hFacC at various places
64      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
65      o add non-self-adjoint cg2d_nsa
66      o update autodiff support routines
67      o re-initialise hfac after ctrl_depth_ini
68      o works for 5x5 box, doesnt work for global_ocean.90x40x15
69    * Adding verification for 5x5 box (4-layer) bottom topography control
70    
71    checkpoint58g_post
72    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
73       used for mean seasonal cycle, mean diurnal cycle); add an example
74       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
75    o pkg/ggl90:
76      - add parameter (minimum surface kinetic energy)
77      - fix bug (avoiding division by zero)
78    o couple pkg/thsice to pkg/seaice:
79      - modify advection in seaice to accomodate new scalar fields to be advected
80      - only muliDimAdection scheme work with seaice/thsice
81      - mapping of thsice-variables to seaice-variables, back and forth
82      - does not break the verification experiments, but does not give the
83        desired results either
84    o pkg/seaice
85      - make (default) second order advection a bit less confusing?
86    
87    checkpoint58f_post
88    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
89      to pkg/seaice):
90      - new routines thsice_map_exf and thsice_get_exf provide the interface
91      - add an additional formal parameter to thsice_solve4temp
92    o pkg/exf:
93      - add new fields wspeed, snowprecip (to be able to couple to thsice)
94      - correct Stefan-Boltzmann constant
95      - new parameter for longwave surface emittance
96      - separate some stuff from exf_bulkformulae into new routines  
97        exf_radiation, exf_wind
98      - add new parameters and constants: longwave emissivity for ocean, ice
99        and snow, evaporation parameters over ice
100      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
101        either wind from stress or stress from wind
102    o pkg/thSIce:
103    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
104    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
105       and THSICE_CALC_THICKN
106    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
107    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
108      to make debugging easier.
109    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
110    o pkg/bulk_force:
111      - clean-up comments and parameters ;
112      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
113    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
114      generate new output for test-experiment: aim.5l_cs.thSI
115    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
116      testreport accordingly
117    
118    checkpoint58e_post
119    o SEAICE_CGRID adjoint done
120    o R_STAR adjoint implemented.
121      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
122      * need to sort out init. of h0facc, etc.
123    o Make pkg/profile fully independent of ecco,cost, etc. stuff
124      to be able to use it in pure forward.
125    
126    checkpoint58d_post
127    o upgrade simple test-experiment to tutorial example:
128     step.1: duplicate the experiment and (step.2) will remove the old copy.
129      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
130      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
131      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
132      tutorial_global_oce_biogeo    <- copy of dic_example
133      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
134      tutorial_plume_on_slope       <- copy of plume_on_slope
135      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
136      tutorial_global_oce_optim     <- empty for now (David ?)
137      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
138     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
139    o correct a sign problem in cost_scat.F
140    o obcs and ptracers: fix boundary conditions for advections schemes
141      with larger stencil
142    o thsice adjoint: start
143    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
144      completeness
145    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
146      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
147    o ptracers adjoint:
148      * avoid extensive recomputatations
149      * fix missing re-init. of gptr (missed by TAF)
150    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
151      me to turn off the excessive output to STDOUT that this package produces
152    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
153      and add those terms in Vector-Invariant formulation.
154    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
155      if the control period (xx_hfluxperiod etc) is 0
156    o in profiles pkg, clean routines and fix details
157    o in ecco pkg, reading ssh data:
158      fix problem in case the model does not start at iter0=0
159    o fix mnc-pickup/restart for ptracers
160    o new package prifiles:
161      code to compute profile-based cost by Gael Forget
162      (modifs in ecco, ctrl, autodiff)
163    o Benign bug fix in initialization (spotted by M. Mazloff) of
164      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
165    
166    checkpoint58c_post
167    o adjoint: finish NLFS adjoint and provide reference output in
168      verification/global_ocean.90x40x15/results_ad_nlfs
169    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
170      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
171      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
172      with SEAICE_CGRID defined.
173    o move calendarDumps from "data" to "data.cal" and clean-up the code
174      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
175    o add useEXF & useCAL flags (for now, set in hard-coded way)
176    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
177      (were missing in NH mode, and wrong in quasihydrostatic mode).
178      waiting for Chris updated version of calc_gw to add those CALLs.
179    o fix bug in quasihydrostatic S/R ;
180      add a test for this option: global_ocean.90x40x15.qshyd
181    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
182      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
183    o add on/off flag useOffLine for package OFFLINE
184    o seaice:
185      - modify advection so that it works also on the C-grid
186      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
187        problem in multi-tile runs with C-grid
188      - add flags for clipping ice velocities and/or masking solver forcing
189      - fix drag (ocean on ice) formulation and a bug that caused noise in the
190        C-grid solver
191      - added a few comments to seaice_diffusion.F
192      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
193        are now exclusive)
194      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
195        required re-ordering the code a little:
196       + make DAIRN global variable (defined in SEAICE)
197       + move computation of the viscosities eta and zeta into a new separate
198         routine (because I need to recompute them in seaice_ocean_stress.F)
199    
200    checkpoint58b_post
201    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
202      update output.txt of exp. aim.5l_cs.thSI
203    o various mnc cleanups and improvements:
204      + shrink lookup tables by factor of ~4
205      + better error reporting when running out of lookup space
206      + able to handle longer path/file names (up to 500 chars)
207    o adjoint:
208      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
209      - TBD: "hidden" mom_vecinv recomp. in dynamics
210    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
211     (allow to differentiate between forcing components using new integer flags:
212      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
213     and add new flag to put Dissipation tendency out of Adams-Bashforth.
214    o ecco
215      - enable trend removal from SSH anomaly obs.
216    o adjoint
217      - a fix for PmEpR when #undef EXACT_CONSERV
218      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
219      - try to fix "hidden" recomp. in forward_step for NLFS
220        (NLFS seems broken sometimes after I checked it in)
221    o seaice:
222     - add c-grid version of the dynamic solver:
223       + three new routines that are the c-grid substitute lsr, dynsolver
224         and ostres
225       + put a few fields that were local to dynsolver into global common
226         blocks, so that I can move the computation of stresses etc into
227         seaice_lsr (saves coding but may break the adjoint).
228     - replace more hardwired parameters by runtime parameters
229     - add ice masks that mask the rhs of the implicit solvers where there
230       is no ice (commented out in seaice_dynsolver, because i am not sure
231       if this works properly), eventually this should replace the clipping
232       of ice velocities in seaice_dynsolver to +/-40cm/s.
233    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
234      include it only where its needed
235    o move balancing of fluxes before the call of external_forcing_surf
236    o seaice:
237      - correct units of turning angles (now they are really in degrees)
238      - move computation of GWATX/Y out of main routine into dynsolver
239      - initialize GWATX/Y in seaice_init
240    o Apply mask on Fresh-Water flux (needed for SSH forcing).
241      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
242    o seaice: add runtime flags for turning angles (default to zero)
243    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
244      and trend from exf forcing and ctrl control adjustments
245    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
246      (since checkpoint57x_post)
247    o change the default rotation period to 86164.s = the Earth rotation
248    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
249      and based on a reference stratification. Tested within hs94.cs-32x32x5.
250    o seaice advection: add code for choosing between the default (2nd order
251      central differences) and multiDim advection schemes provided by
252      pkg/generic_advdiff
253    o seaice:
254      - removed all references to SEAICE_GRID.h fields from
255        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
256        (cubed-sphere configuration will change a little)
257      - grid computations in seaice_init are obsolete now.
258      - cleaned up code a little so that is easier to read (hopefully).
259      - added new (better?) discretizations of default advection and diffusion
260        (turn on with SEAICEuseFluxForm)
261      - replace 1 in 3d global fields by kSurface in growth.F
262      
263    checkpoint58a_post
264    o seaice:
265      - bug fix in advect.F
266    o shelfice:
267      - separate shelfice load anomaly from pload (breaks with time
268        dependent forcing), => introduce constant field shelficeLoadAnomaly.
269        Its default is 0., but it may be computed more cleverly from (unknown)
270        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
271        done offline. A good approximation of the pressure load anomaly is
272        necessary to avoid large initial adjustment processes underneath
273        deep-reaching shelfice.
274      - small fix in ISOMIP shelfice_thermodynamics
275      - add more sophisticated thermodynamics of Hellmer (1989), this is
276        now the default
277      - give a few constants more intuitive names
278    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
279      if bulk formulae are used in long integration (especially EmPmR). Turn
280      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
281      if balancePrintMean, the imbalance that is substracted is printed to
282      STDOUT.
283    o fix bug (typo) in obcs_apply_eta.F
284    o add a new package shelfice which enables us to model the circulation
285      underneath shelf-ice with draughts of hundreds of meters.
286     - works
287     - to do: + include improved thermodynamics
288              + check whether kSurfC (from model/inc/SURFACE.h) can be used
289                instead of new field kTopC
290              + can we use topoFile, Ro_surf and existing code in ini_depth.F
291                instead of new field R_shelfIce and new code in ini_depth.F
292                and ini_mask_etc.F?
293              + adjust vertical mixing schemes?
294    o seaice pkg:
295     - add a cpp-flag to include a simple formula for a salinity dependent
296       freezing point of sea water at the surface
297     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
298       meridional stresses are now different (and hopefully correct)
299    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
300       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
301       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
302    o pkg/diagnostics: add options and parameters for regional-statistics
303       diagnostics ; define regions by reading a region-mask from a file
304       (might add other options later)
305    o pkg/bulk_force:
306     - add option and parameters to use AIM surface-flux formulae.
307     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
308       others forcing fields (defined in PARM05, parameter file "data") are loaded
309       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
310     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
311     - use the right EXCH call for uwind,vwind (to work on CS-grid).
312     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
313       and parameters (note: calcWindStress replaces .NOT.readwindstress).
314     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
315    
316    checkpoint58
317    o add "--embed-source" option to genmake2 which, when the supporting
318      tools can be compiled (as determined by genmake2) will turn on the
319      embed_files package which then embeds the entire MITgcm source code
320      (*.[fFhc] + Makefile) used for the build within the executable
321      - requested by CNH but off by default
322      - adds a paltry <9MB to the mitgcmuv executable in most cases
323      - only writes the output when useEMBEDSRC in eedata is true
324    o clean up 3-dim. relaxation codes:
325      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
326      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
327      * Thanks to Tom Haine for testing!
328    
329    checkpoint57z_post
330    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
331      affects output (@ truncation level) of exp. plume_on_slope ; updated.
332    o fix the pickup behavior for obcs in combination with ptracers
333    o fix a bug in ptracers_external_fields_load
334    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
335      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
336    o transfered surface NH pressure to eta field (if exactConserv).
337    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
338         and update lab_sea output.txt file.
339    o completing 3-dim. relaxation code: additional term
340         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
341      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
342      * At compile time, in "EXF_OPTIONS.h" set
343          #define  ALLOW_CLIMTEMP_RELAXATION
344          #define  ALLOW_CLIMSALT_RELAXATION
345      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
346          tauThetaClimRelax3Dim = 15552000.0,
347          tauSaltClimRelax3Dim  = 15552000.0,
348      * 3 cases:
349          1) Use a constant-in-time 3-dim. field
350          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
351          3) Real-time relax. to time-evolving prescribed field
352    o Adding Laplacian-type smoothness constraint on
353      initial and boundary (forcing) controls (ic, bc)
354      * enable at compile-time via
355        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
356      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
357      * Absolute scale somewhat unclear so far
358      * no area weighting was included since no other cost term does so far
359    
360    checkpoint57y_post
361    First step for a NLFS adjoint
362    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
363    o new init. routines for calc_r_star, calc_surf_dr
364    o still need to deal with ini_masks_etc
365    o testreport seemed happy
366    checkpoint57y_pre
367    
368    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
369    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
370    o add new offset feature to offline pkg (plus minor cleanup)
371    o cfc fixes for final year of integration
372    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
373      be in GCHEM_OPTIONS).
374    
375    checkpoint57x_post
376    o fix testreport Pb in multiple test experiment.
377    o cleanup our namelist syntax in verification:
378      - make it more F95 standards compliant (some work still needed)
379      - allows the vast majority of our tests to work with gfortran
380    o Non-Hydrostatic:
381     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
382     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
383    o Allow to apply AB on T,S rather than on AB(gT,gS):
384     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
385     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
386       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
387     - need a "clever" read_pickup to restart from the other AB formulation
388    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
389    o remove some unused variables (reduces number of compiler warnings)
390    o adjoint
391      * Disable useVariableViscosity for adjoint for time being
392        (there are a number of extensive recomputations)
393      * Initialize certain variables needed for adjoint
394    
395    checkpoint57w_post
396    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
397                 fix the singleCpuIO RS version of MDSWRITEFIELD
398       and add a WARNING if using globalFiles=T with multi-processors.
399    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
400      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
401    o tracer advection scheme:
402      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
403       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
404       was not very convenient).
405      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
406       (further tests needed for the implicit DST & Flux-Limiter schemes).
407    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
408      and sRef for convenience, handy, when you want to initialize
409      ptracers in a large domain with a constant non-zero value. Also,
410      untangle ptracers_init.F a little.
411    
412    checkpoint57v_post
413    o change dome exp. to use variable viscosity in side-drag terms.
414    o remove all the files from the cfc_offline test since they are now
415      incorporated into tutorial_cfc_offline which has been producing
416      identical results for a few days of testing
417    o add new parameter: sideDragFactor to enable half-slip-side BC
418      and change side-drag S/R to use viscosity from mom_calc_visc
419      (can switch back by setting sideDragFactor=0.); affects results at
420      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
421       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
422    o vorticity & strain are now computed without masking, to account for
423      no-slip-side BC in variable viscosity calculation ; mask is applied
424      anyway later on, before computing advection/coriolis terms.
425    o modify exp4 to test new obcs support for reading from external files
426      and for passive tracers
427    o fix behavior of ptracers_monitor when monitor output is written to a
428      netcdf-file; still not independent of monitor.F (writes in the same
429      file).
430    o change default value of tRef (put a uniform, meaningful value for ocean
431      & atmos) and initialize sRef (was missing, as Martin mentioned).
432    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
433      to be proportional to enstrophy dissipation length.  Thus,
434       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
435      This is now consistent with Smagorinsky and with the manual.
436    
437    checkpoint57u_post
438    o OBCS and PTRACERS: add open boundary support for passive tracers
439      - either use homogenous (pseudo) v.Neumann conditions or prescribe
440        OB-values from file; this is not different from the way theta and salinity
441        are treated
442      - however, Orlanski-radiation conditions are not supported, and the model
443        will stop if you use pTracers and Orlanski at the same time.
444      - beefed up the rountine obcs_external_fields_load: now only those open
445        boundary values are overwritten with values from files for which there
446        are really files, otherwise the OB-fields remain untouched. This makes
447        it possible to use different OBs at different ends of the domain (as
448        with EXF)
449    o reduce number of exch calls in shap_filt (s2).
450    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
451      truncation level) 4/5 MLAdjust test results (11&12 digits match).
452    
453    checkpoint57t_post
454    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
455    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
456      same truncation, independent of the face number: affects affects several
457      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
458    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
459      note that biharmonic viscosity + no-slip was not tested in any experiment.
460    o fix bug in non-linear free-surf side-drag ; generate new output for
461      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
462    o make mnc honor the writeBinaryPrec flag for most kinds of output
463    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
464    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
465      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
466    o add brackets in multi-terms sum to get same truncation, independent of
467      the face number (manage to get exactly same value of gU,gV at the cs-edge)
468      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
469    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
470      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
471      a maximum grid-scale Reynolds number.  Also, changes all length calculations
472      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
473      Suggested values of viscosity parameters found in mom_calc_visc.
474      Many new viscosity diagnostics available.
475    
476    checkpoint57s_post
477    o Add clearing-house for viscosity calculations, mom_calc_visc and
478      correct numerous bugs in LeithD and Smagorinsky discretizations.  
479      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
480      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
481      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
482      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
483      The Strain-Tension form is now called with useStrainTensonVisc=.true.
484      ViscAhStrain and viscAhTension are now retired.
485    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
486    o In response to JMC's bug report, genmake2 now ignores any soft-links
487      that it finds in the *current* directory when searching for files.
488      Soft-links found in any other source directories will still work as
489      they did before.
490    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
491      a C routine to unlimit the stack size
492    o mnc-ify pkg/aim snapshot vars
493    o mnc-ify pkg/land as requested by Daniel
494    o various changes to mnc including:
495      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
496      - output can now be grouped so that all files within a group
497          change the ITER portion of their names in lock-step together
498      - can now read ("global") PER-FACE (in addition to PER-TILE) files
499          and works with both EXCH1 and EXCH2 (but needs more testing)
500      - writing works for all verification test cases w/ g77 on Linux
501    
502    checkpoint57r_post
503    o make MNC variable initialization happen earlier
504    o add diagnostics for (almost) each term of the momentum Eq.
505    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
506    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
507    o remove MINIMAL_TAVE_OUTPUT option ;
508      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
509    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
510      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
511    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
512    o add time-dependent SST, SSS control
513    o cost terms in ecco/ modularized (new cost_generic.F)
514    o cost_averages routines are modularized (new cost_averagesgeneric.F)
515    o new infrastructure for seaice model vs. obs misfits in seaice/
516      * driver from the_main_loop.F is seaice_cost_driver.F
517      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
518      * gradient check in Exp. 6a of natl_box_adjoint/
519    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
520      (see README file)
521    
522    checkpoint57q_post
523    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
524    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
525      - bug was reported by Jean-Michel and Ian Fenty
526    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
527      update exp. cpl_aim+ocn output.
528    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
529      Needed for high-res. runs with large global files
530      to be able to limit tapelev size
531    o Changed some tests for adjoint:
532      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
533      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
534      * global_ocean.90x40x15/ back to default 3-level checkpointing
535    o Modifications to enable scripted COMMON to MODULE conversion
536      * verification/OpenAD/code/ has necessary scripts and description;
537      * converts, compiles and runs successfully;
538    
539    checkpoint57p_post
540    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
541    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
542      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
543    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
544    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
545      (was already the case for dissipation with mom_vecinv,
546       and also the case for grad.PhiHyd when staggered-timeStep)
547      This will allow to put dissipation out-off the AB time-stepping.
548     Unfortunately, affects truncation error. Update output of exp. that "fails"
549      (cg2d matching number) and leave the others for later: front_relax(10),
550      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
551      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
552    
553  checkpoint57o_post  checkpoint57o_post
554  o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and  o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
555    (2) its ready to be documented during the 20050801 DocFest    (2) its ready to be documented during the 20050801 DocFest

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