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revision 1.560 by jmc, Tue Oct 4 03:43:30 2005 UTC revision 1.712 by jmc, Wed Aug 9 16:02:19 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 lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
8      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
9      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
10        to work with SingleCpuIO.
11    o add "_d 0" to real constant of pkg/cfc subroutines ;
12       update exp. cfc_exemple & tutorial_cfc_offline output files.
13    o multi-threading and IO:
14      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
15        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
16      - barrier before and after reading.
17      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
18      - avoid using MDS_WRITELOCAL for LAND pkg output.
19      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
20        common-block variables ; Allows multi-threading with master-thread IO.
21    o change default MAX_NO_THREADS from 32 to 4 ;
22      and stop cleanly when MAX_NO_THREADS is too small.
23    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
24    
25    checkpoint58m_post
26    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
27       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
28    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
29       keep global_ocean.90x40x15 (for AD testing) with former secondary test
30       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
31    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
32        add MITgcm_tutorials (= code + all the tutorials)
33    o ecco, option to compute cost for total ssh (mean+anom)
34    o consistent with addition of ptracer and ssh in pkg/profiles
35    o profiles: adding ptracer and ssh
36    o testreport: change multi-test output-file name
37      (from output.txt.{name} to output.{name}.txt)
38    o profiles: now ok for mutli-tiles case
39    o seaice: add 4 parameters for different advection schemes for area,
40      (effective) seaice thickness, enthalphy, and snow height. Their default
41      is the standard parameter SEAICEadvScheme
42    o calc_gw:
43     - add cosFacU in zonal viscous flux (harmonic.visc.).
44     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
45       of tutorial_plume_on_slope.
46    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
47    o calc_gw: true flux-form, account for horizontal grid spacing.
48      update rotating_tank results, but not plume_on_slope (affected at
49      truncation level, 11 digits).
50    
51    checkpoint58l_post
52    o calc_gw:
53     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
54     - remove side-drag for now (need to fix it); update plume_on_slope results.
55     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
56    o commit code to make SST/SSS weights spatially variable
57      (based on either variable in-situ or variable initial T/S weights)
58    o pkg/ecco:
59      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
60        now based on horizontally varying weights wthetaLev, wsaltLev
61      * cost_averagesflags now returns year indices in addition to day, month
62      * sflux balance is performed on annual basis
63        (sflxumm, sfluxmm2, bal_sfluxmm)
64      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
65        including separate counting and multipliers
66    o pkg/rbcs
67      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
68    
69    checkpoint58k_post
70    o testreport:
71     - always build in dir. "build" (if not there, mkdir build instead of building
72       & running in input)
73     - run in dir run (if it exists), in build otherwise.
74     - call prepare_run (if input/prepare_run exists)
75     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
76    o pkg/exf modifications to interpolation and rotation routines for more
77       reasonable treatment of North Pole singularity: for tracers North Pole
78       value is set to northernmost zonal-mean value, for zonal velocity it is
79       set to zero, and for meridional velocity it is set to northernmost value.
80    o pkg/exf/exf_check_range.F
81     - add tile index to diagnostics and move stop statement to the very
82       end of the routine.
83    o pkg/diagnostics: (diagnostics_main_init.F)
84      define title of isomorphic variables according to the current config.
85    o pkg/thsice with pkg/seaice dynamics:
86    - fix domain of computation (interior only, required for exf) and do exchanges
87    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
88    o towards a standard way of dealing with multi-threading in MONITOR
89      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
90    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
91       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
92    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
93    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
94    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
95       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
96    o tracer advection:
97     - clean-up and simplify calc_common_factors.F
98     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
99       advection subroutine (but still not used within DST advection S/R)
100    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
101    
102    checkpoint58j_post
103    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
104      from file (collects calls previously in FORWARD_STEP)
105    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
106    o adjoint store dir. adjusted accordingly
107    o genmake2
108      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
109    
110    checkpoint58i_post
111    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
112      on wind stress (SEAICEstressFactor defaults to 1.)
113    o Total number of Timers is finite (<=40): comment out 2 non-essential one
114      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
115    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
116      on CS-grid: no longer loosing mass.
117    o exf & curvilinear-grid: no longer modify longitude xC & xG.
118    o pkg/ggl90: fix sloppy output and fix a bug
119    o pkg/seaice: added SEAICEuseEVPpickup parameter
120      - Set to false in order to start EVP solver with
121        non-EVP pickup files when using SEAICEuseEVP
122      - fix sign error in diffusion in seaice_calc_rhs
123    
124    checkpoint58h_post
125    * Modifications for bottom topography control
126      o replace hFacC by _hFacC at various places
127      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
128      o add non-self-adjoint cg2d_nsa
129      o update autodiff support routines
130      o re-initialise hfac after ctrl_depth_ini
131      o works for 5x5 box, doesnt work for global_ocean.90x40x15
132    * Adding verification for 5x5 box (4-layer) bottom topography control
133    
134    checkpoint58g_post
135    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
136       used for mean seasonal cycle, mean diurnal cycle); add an example
137       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
138    o pkg/ggl90:
139      - add parameter (minimum surface kinetic energy)
140      - fix bug (avoiding division by zero)
141    o couple pkg/thsice to pkg/seaice:
142      - modify advection in seaice to accomodate new scalar fields to be advected
143      - only muliDimAdection scheme work with seaice/thsice
144      - mapping of thsice-variables to seaice-variables, back and forth
145      - does not break the verification experiments, but does not give the
146        desired results either
147    o pkg/seaice
148      - make (default) second order advection a bit less confusing?
149    
150    checkpoint58f_post
151    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
152      to pkg/seaice):
153      - new routines thsice_map_exf and thsice_get_exf provide the interface
154      - add an additional formal parameter to thsice_solve4temp
155    o pkg/exf:
156      - add new fields wspeed, snowprecip (to be able to couple to thsice)
157      - correct Stefan-Boltzmann constant
158      - new parameter for longwave surface emittance
159      - separate some stuff from exf_bulkformulae into new routines  
160        exf_radiation, exf_wind
161      - add new parameters and constants: longwave emissivity for ocean, ice
162        and snow, evaporation parameters over ice
163      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
164        either wind from stress or stress from wind
165    o pkg/thSIce:
166    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
167    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
168       and THSICE_CALC_THICKN
169    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
170    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
171      to make debugging easier.
172    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
173    o pkg/bulk_force:
174      - clean-up comments and parameters ;
175      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
176    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
177      generate new output for test-experiment: aim.5l_cs.thSI
178    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
179      testreport accordingly
180    
181    checkpoint58e_post
182    o SEAICE_CGRID adjoint done
183    o R_STAR adjoint implemented.
184      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
185      * need to sort out init. of h0facc, etc.
186    o Make pkg/profile fully independent of ecco,cost, etc. stuff
187      to be able to use it in pure forward.
188    
189    checkpoint58d_post
190    o upgrade simple test-experiment to tutorial example:
191     step.1: duplicate the experiment and (step.2) will remove the old copy.
192      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
193      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
194      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
195      tutorial_global_oce_biogeo    <- copy of dic_example
196      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
197      tutorial_plume_on_slope       <- copy of plume_on_slope
198      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
199      tutorial_global_oce_optim     <- empty for now (David ?)
200      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
201     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
202    o correct a sign problem in cost_scat.F
203    o obcs and ptracers: fix boundary conditions for advections schemes
204      with larger stencil
205    o thsice adjoint: start
206    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
207      completeness
208    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
209      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
210    o ptracers adjoint:
211      * avoid extensive recomputatations
212      * fix missing re-init. of gptr (missed by TAF)
213    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
214      me to turn off the excessive output to STDOUT that this package produces
215    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
216      and add those terms in Vector-Invariant formulation.
217    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
218      if the control period (xx_hfluxperiod etc) is 0
219    o in profiles pkg, clean routines and fix details
220    o in ecco pkg, reading ssh data:
221      fix problem in case the model does not start at iter0=0
222    o fix mnc-pickup/restart for ptracers
223    o new package prifiles:
224      code to compute profile-based cost by Gael Forget
225      (modifs in ecco, ctrl, autodiff)
226    o Benign bug fix in initialization (spotted by M. Mazloff) of
227      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
228    
229    checkpoint58c_post
230    o adjoint: finish NLFS adjoint and provide reference output in
231      verification/global_ocean.90x40x15/results_ad_nlfs
232    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
233      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
234      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
235      with SEAICE_CGRID defined.
236    o move calendarDumps from "data" to "data.cal" and clean-up the code
237      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
238    o add useEXF & useCAL flags (for now, set in hard-coded way)
239    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
240      (were missing in NH mode, and wrong in quasihydrostatic mode).
241      waiting for Chris updated version of calc_gw to add those CALLs.
242    o fix bug in quasihydrostatic S/R ;
243      add a test for this option: global_ocean.90x40x15.qshyd
244    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
245      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
246    o add on/off flag useOffLine for package OFFLINE
247    o seaice:
248      - modify advection so that it works also on the C-grid
249      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
250        problem in multi-tile runs with C-grid
251      - add flags for clipping ice velocities and/or masking solver forcing
252      - fix drag (ocean on ice) formulation and a bug that caused noise in the
253        C-grid solver
254      - added a few comments to seaice_diffusion.F
255      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
256        are now exclusive)
257      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
258        required re-ordering the code a little:
259       + make DAIRN global variable (defined in SEAICE)
260       + move computation of the viscosities eta and zeta into a new separate
261         routine (because I need to recompute them in seaice_ocean_stress.F)
262    
263    checkpoint58b_post
264    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
265      update output.txt of exp. aim.5l_cs.thSI
266    o various mnc cleanups and improvements:
267      + shrink lookup tables by factor of ~4
268      + better error reporting when running out of lookup space
269      + able to handle longer path/file names (up to 500 chars)
270    o adjoint:
271      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
272      - TBD: "hidden" mom_vecinv recomp. in dynamics
273    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
274     (allow to differentiate between forcing components using new integer flags:
275      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
276     and add new flag to put Dissipation tendency out of Adams-Bashforth.
277    o ecco
278      - enable trend removal from SSH anomaly obs.
279    o adjoint
280      - a fix for PmEpR when #undef EXACT_CONSERV
281      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
282      - try to fix "hidden" recomp. in forward_step for NLFS
283        (NLFS seems broken sometimes after I checked it in)
284    o seaice:
285     - add c-grid version of the dynamic solver:
286       + three new routines that are the c-grid substitute lsr, dynsolver
287         and ostres
288       + put a few fields that were local to dynsolver into global common
289         blocks, so that I can move the computation of stresses etc into
290         seaice_lsr (saves coding but may break the adjoint).
291     - replace more hardwired parameters by runtime parameters
292     - add ice masks that mask the rhs of the implicit solvers where there
293       is no ice (commented out in seaice_dynsolver, because i am not sure
294       if this works properly), eventually this should replace the clipping
295       of ice velocities in seaice_dynsolver to +/-40cm/s.
296    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
297      include it only where its needed
298    o move balancing of fluxes before the call of external_forcing_surf
299    o seaice:
300      - correct units of turning angles (now they are really in degrees)
301      - move computation of GWATX/Y out of main routine into dynsolver
302      - initialize GWATX/Y in seaice_init
303    o Apply mask on Fresh-Water flux (needed for SSH forcing).
304      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
305    o seaice: add runtime flags for turning angles (default to zero)
306    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
307      and trend from exf forcing and ctrl control adjustments
308    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
309      (since checkpoint57x_post)
310    o change the default rotation period to 86164.s = the Earth rotation
311    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
312      and based on a reference stratification. Tested within hs94.cs-32x32x5.
313    o seaice advection: add code for choosing between the default (2nd order
314      central differences) and multiDim advection schemes provided by
315      pkg/generic_advdiff
316    o seaice:
317      - removed all references to SEAICE_GRID.h fields from
318        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
319        (cubed-sphere configuration will change a little)
320      - grid computations in seaice_init are obsolete now.
321      - cleaned up code a little so that is easier to read (hopefully).
322      - added new (better?) discretizations of default advection and diffusion
323        (turn on with SEAICEuseFluxForm)
324      - replace 1 in 3d global fields by kSurface in growth.F
325      
326    checkpoint58a_post
327    o seaice:
328      - bug fix in advect.F
329    o shelfice:
330      - separate shelfice load anomaly from pload (breaks with time
331        dependent forcing), => introduce constant field shelficeLoadAnomaly.
332        Its default is 0., but it may be computed more cleverly from (unknown)
333        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
334        done offline. A good approximation of the pressure load anomaly is
335        necessary to avoid large initial adjustment processes underneath
336        deep-reaching shelfice.
337      - small fix in ISOMIP shelfice_thermodynamics
338      - add more sophisticated thermodynamics of Hellmer (1989), this is
339        now the default
340      - give a few constants more intuitive names
341    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
342      if bulk formulae are used in long integration (especially EmPmR). Turn
343      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
344      if balancePrintMean, the imbalance that is substracted is printed to
345      STDOUT.
346    o fix bug (typo) in obcs_apply_eta.F
347    o add a new package shelfice which enables us to model the circulation
348      underneath shelf-ice with draughts of hundreds of meters.
349     - works
350     - to do: + include improved thermodynamics
351              + check whether kSurfC (from model/inc/SURFACE.h) can be used
352                instead of new field kTopC
353              + can we use topoFile, Ro_surf and existing code in ini_depth.F
354                instead of new field R_shelfIce and new code in ini_depth.F
355                and ini_mask_etc.F?
356              + adjust vertical mixing schemes?
357    o seaice pkg:
358     - add a cpp-flag to include a simple formula for a salinity dependent
359       freezing point of sea water at the surface
360     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
361       meridional stresses are now different (and hopefully correct)
362    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
363       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
364       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
365    o pkg/diagnostics: add options and parameters for regional-statistics
366       diagnostics ; define regions by reading a region-mask from a file
367       (might add other options later)
368    o pkg/bulk_force:
369     - add option and parameters to use AIM surface-flux formulae.
370     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
371       others forcing fields (defined in PARM05, parameter file "data") are loaded
372       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
373     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
374     - use the right EXCH call for uwind,vwind (to work on CS-grid).
375     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
376       and parameters (note: calcWindStress replaces .NOT.readwindstress).
377     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
378    
379    checkpoint58
380    o add "--embed-source" option to genmake2 which, when the supporting
381      tools can be compiled (as determined by genmake2) will turn on the
382      embed_files package which then embeds the entire MITgcm source code
383      (*.[fFhc] + Makefile) used for the build within the executable
384      - requested by CNH but off by default
385      - adds a paltry <9MB to the mitgcmuv executable in most cases
386      - only writes the output when useEMBEDSRC in eedata is true
387    o clean up 3-dim. relaxation codes:
388      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
389      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
390      * Thanks to Tom Haine for testing!
391    
392    checkpoint57z_post
393    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
394      affects output (@ truncation level) of exp. plume_on_slope ; updated.
395    o fix the pickup behavior for obcs in combination with ptracers
396    o fix a bug in ptracers_external_fields_load
397    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
398      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
399    o transfered surface NH pressure to eta field (if exactConserv).
400    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
401         and update lab_sea output.txt file.
402    o completing 3-dim. relaxation code: additional term
403         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
404      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
405      * At compile time, in "EXF_OPTIONS.h" set
406          #define  ALLOW_CLIMTEMP_RELAXATION
407          #define  ALLOW_CLIMSALT_RELAXATION
408      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
409          tauThetaClimRelax3Dim = 15552000.0,
410          tauSaltClimRelax3Dim  = 15552000.0,
411      * 3 cases:
412          1) Use a constant-in-time 3-dim. field
413          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
414          3) Real-time relax. to time-evolving prescribed field
415    o Adding Laplacian-type smoothness constraint on
416      initial and boundary (forcing) controls (ic, bc)
417      * enable at compile-time via
418        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
419      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
420      * Absolute scale somewhat unclear so far
421      * no area weighting was included since no other cost term does so far
422    
423    checkpoint57y_post
424    First step for a NLFS adjoint
425    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
426    o new init. routines for calc_r_star, calc_surf_dr
427    o still need to deal with ini_masks_etc
428    o testreport seemed happy
429    checkpoint57y_pre
430    
431    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
432    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
433    o add new offset feature to offline pkg (plus minor cleanup)
434    o cfc fixes for final year of integration
435    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
436      be in GCHEM_OPTIONS).
437    
438    checkpoint57x_post
439    o fix testreport Pb in multiple test experiment.
440    o cleanup our namelist syntax in verification:
441      - make it more F95 standards compliant (some work still needed)
442      - allows the vast majority of our tests to work with gfortran
443    o Non-Hydrostatic:
444     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
445     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
446    o Allow to apply AB on T,S rather than on AB(gT,gS):
447     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
448     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
449       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
450     - need a "clever" read_pickup to restart from the other AB formulation
451    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
452    o remove some unused variables (reduces number of compiler warnings)
453    o adjoint
454      * Disable useVariableViscosity for adjoint for time being
455        (there are a number of extensive recomputations)
456      * Initialize certain variables needed for adjoint
457    
458    checkpoint57w_post
459    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
460                 fix the singleCpuIO RS version of MDSWRITEFIELD
461       and add a WARNING if using globalFiles=T with multi-processors.
462    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
463      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
464    o tracer advection scheme:
465      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
466       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
467       was not very convenient).
468      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
469       (further tests needed for the implicit DST & Flux-Limiter schemes).
470    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
471      and sRef for convenience, handy, when you want to initialize
472      ptracers in a large domain with a constant non-zero value. Also,
473      untangle ptracers_init.F a little.
474    
475    checkpoint57v_post
476    o change dome exp. to use variable viscosity in side-drag terms.
477    o remove all the files from the cfc_offline test since they are now
478      incorporated into tutorial_cfc_offline which has been producing
479      identical results for a few days of testing
480    o add new parameter: sideDragFactor to enable half-slip-side BC
481      and change side-drag S/R to use viscosity from mom_calc_visc
482      (can switch back by setting sideDragFactor=0.); affects results at
483      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
484       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
485    o vorticity & strain are now computed without masking, to account for
486      no-slip-side BC in variable viscosity calculation ; mask is applied
487      anyway later on, before computing advection/coriolis terms.
488    o modify exp4 to test new obcs support for reading from external files
489      and for passive tracers
490    o fix behavior of ptracers_monitor when monitor output is written to a
491      netcdf-file; still not independent of monitor.F (writes in the same
492      file).
493    o change default value of tRef (put a uniform, meaningful value for ocean
494      & atmos) and initialize sRef (was missing, as Martin mentioned).
495    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
496      to be proportional to enstrophy dissipation length.  Thus,
497       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
498      This is now consistent with Smagorinsky and with the manual.
499    
500    checkpoint57u_post
501    o OBCS and PTRACERS: add open boundary support for passive tracers
502      - either use homogenous (pseudo) v.Neumann conditions or prescribe
503        OB-values from file; this is not different from the way theta and salinity
504        are treated
505      - however, Orlanski-radiation conditions are not supported, and the model
506        will stop if you use pTracers and Orlanski at the same time.
507      - beefed up the rountine obcs_external_fields_load: now only those open
508        boundary values are overwritten with values from files for which there
509        are really files, otherwise the OB-fields remain untouched. This makes
510        it possible to use different OBs at different ends of the domain (as
511        with EXF)
512    o reduce number of exch calls in shap_filt (s2).
513  o CS-grid: fix divergence contribution to Leith viscosity. Affects (@  o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
514    truncation level) 4/5 MLAdjust test results (11&12 digits match).    truncation level) 4/5 MLAdjust test results (11&12 digits match).
515    

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