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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.746 by jmc, Mon Nov 20 05:19:43 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 adding precip control xx_precip  o diagnostics: rename few diags:
8  o moved ptracer ctrl index 17 -> 32    s/'PRESSURE'/'RCENTER '/g
9      s/'TICE    '/'oceFreez'/g
10      s/'TAUX    '/'oceTAUX '/g
11      s/'TAUY    '/'oceTAUY '/g
12      s/'SWFLUX  '/'oceQsw  '/g
13      s/DIFx/DFxE/g
14      s/DIFy/DFyE/g
15      and add few ocean-forcing diagnostics:
16      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
17    
18    checkpoint58r_post
19    o modifications to pkg/seaice/growth.F, which change results of
20      lab_sea experiment: fixes pertain to melting snow over open water, to
21      masking EVAP under sea ice, and to using the correct AREA variable for
22      computations of EVAP, PRECIP, HSNOW, and GHEFF
23    o add ability to read bathy, salt, and theta using MNC (off by def)
24    o add flooding algorithm and advection of HSNOW for pkg/seaice;
25      both are turned off by default and do no change any results
26    o seaice advection with pkg/thsice: a step toward the use of non-linear
27      advection scheme, but #ifdef or commented out for now (requires more EXCH).
28    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
29      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
30      in natl_box (affects results @ truncation level: update output.txt)
31    o multi-threading and IO:
32      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
33      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
34        (needed to work with SingleCpuIO): tested in all verif. exp.
35    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
36      affects the results (but none of the verification test uses this scheme).
37    o Adding some pkg/diagnostics capability to pkg/seaice
38      (will certainly be subject to changes)
39    o ctrl: adding new control variables:
40      lwflux, lwdown, evap, snowprecip, apressure, runoff
41    
42    checkpoint58q_post
43    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
44      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
45      high_res_cube configuration by 4% on Columbia.
46    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
47      add (in global_with_exf/code) a version of EXF_INTERP_READ without
48      dynamical allocation (seems to work in multi-threaded).
49    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
50      single CPU io) so that TAF does not have to see EESUPPORT.h
51    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
52    
53    checkpoint58p_post
54    o obcs: stop if obcs is used with useCDscheme = .true.
55    o shelfice:
56     - fix a sign error so that no slip at shelfice interface works
57     - remove stop for combination non-hydrostatic code and shelfice. That does
58       not mean, that the results are correct, but at least they are numerically
59       stable
60    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
61    o added adjoint exch routined for all exch*3d* routines
62      and updated flow directives
63    
64    checkpoint58o_post
65    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
66      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
67    o change controling S/R for writing pickup file (new S/R do_write_pickup)
68      and clean-up reading/writing of pickup files.
69    o fix local version of read/write pickup (NH part) in rotating_tank/code
70    o simplify EXCH interface:
71     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
72     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
73    o added the regrid package
74    o shelfice:
75     - add a simple boundary layer scheme to reduce noise
76     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
77    
78    checkpoint58n_post
79    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
80       local variable (not in common block).
81    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
82      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
83      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
84        to work with SingleCpuIO.
85    o add "_d 0" to real constant of pkg/cfc subroutines ;
86       update exp. cfc_exemple & tutorial_cfc_offline output files.
87    o multi-threading and IO:
88      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
89        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
90      - barrier before and after reading.
91      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
92      - avoid using MDS_WRITELOCAL for LAND pkg output.
93      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
94        common-block variables ; Allows multi-threading with master-thread IO.
95    o change default MAX_NO_THREADS from 32 to 4 ;
96      and stop cleanly when MAX_NO_THREADS is too small.
97    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
98    
99    checkpoint58m_post
100    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
101       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
102    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
103       keep global_ocean.90x40x15 (for AD testing) with former secondary test
104       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
105    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
106        add MITgcm_tutorials (= code + all the tutorials)
107    o ecco, option to compute cost for total ssh (mean+anom)
108    o consistent with addition of ptracer and ssh in pkg/profiles
109    o profiles: adding ptracer and ssh
110    o testreport: change multi-test output-file name
111      (from output.txt.{name} to output.{name}.txt)
112    o profiles: now ok for mutli-tiles case
113    o seaice: add 4 parameters for different advection schemes for area,
114      (effective) seaice thickness, enthalphy, and snow height. Their default
115      is the standard parameter SEAICEadvScheme
116    o calc_gw:
117     - add cosFacU in zonal viscous flux (harmonic.visc.).
118     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
119       of tutorial_plume_on_slope.
120    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
121    o calc_gw: true flux-form, account for horizontal grid spacing.
122      update rotating_tank results, but not plume_on_slope (affected at
123      truncation level, 11 digits).
124    
125    checkpoint58l_post
126    o calc_gw:
127     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
128     - remove side-drag for now (need to fix it); update plume_on_slope results.
129     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
130    o commit code to make SST/SSS weights spatially variable
131      (based on either variable in-situ or variable initial T/S weights)
132    o pkg/ecco:
133      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
134        now based on horizontally varying weights wthetaLev, wsaltLev
135      * cost_averagesflags now returns year indices in addition to day, month
136      * sflux balance is performed on annual basis
137        (sflxumm, sfluxmm2, bal_sfluxmm)
138      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
139        including separate counting and multipliers
140    o pkg/rbcs
141      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
142    
143    checkpoint58k_post
144    o testreport:
145     - always build in dir. "build" (if not there, mkdir build instead of building
146       & running in input)
147     - run in dir run (if it exists), in build otherwise.
148     - call prepare_run (if input/prepare_run exists)
149     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
150    o pkg/exf modifications to interpolation and rotation routines for more
151       reasonable treatment of North Pole singularity: for tracers North Pole
152       value is set to northernmost zonal-mean value, for zonal velocity it is
153       set to zero, and for meridional velocity it is set to northernmost value.
154    o pkg/exf/exf_check_range.F
155     - add tile index to diagnostics and move stop statement to the very
156       end of the routine.
157    o pkg/diagnostics: (diagnostics_main_init.F)
158      define title of isomorphic variables according to the current config.
159    o pkg/thsice with pkg/seaice dynamics:
160    - fix domain of computation (interior only, required for exf) and do exchanges
161    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
162    o towards a standard way of dealing with multi-threading in MONITOR
163      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
164    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
165       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
166    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
167    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
168    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
169       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
170    o tracer advection:
171     - clean-up and simplify calc_common_factors.F
172     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
173       advection subroutine (but still not used within DST advection S/R)
174    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
175    
176    checkpoint58j_post
177    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
178      from file (collects calls previously in FORWARD_STEP)
179    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
180    o adjoint store dir. adjusted accordingly
181    o genmake2
182      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
183    
184    checkpoint58i_post
185    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
186      on wind stress (SEAICEstressFactor defaults to 1.)
187    o Total number of Timers is finite (<=40): comment out 2 non-essential one
188      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
189    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
190      on CS-grid: no longer loosing mass.
191    o exf & curvilinear-grid: no longer modify longitude xC & xG.
192    o pkg/ggl90: fix sloppy output and fix a bug
193    o pkg/seaice: added SEAICEuseEVPpickup parameter
194      - Set to false in order to start EVP solver with
195        non-EVP pickup files when using SEAICEuseEVP
196      - fix sign error in diffusion in seaice_calc_rhs
197    
198    checkpoint58h_post
199    * Modifications for bottom topography control
200      o replace hFacC by _hFacC at various places
201      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
202      o add non-self-adjoint cg2d_nsa
203      o update autodiff support routines
204      o re-initialise hfac after ctrl_depth_ini
205      o works for 5x5 box, doesnt work for global_ocean.90x40x15
206    * Adding verification for 5x5 box (4-layer) bottom topography control
207    
208    checkpoint58g_post
209    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
210       used for mean seasonal cycle, mean diurnal cycle); add an example
211       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
212    o pkg/ggl90:
213      - add parameter (minimum surface kinetic energy)
214      - fix bug (avoiding division by zero)
215    o couple pkg/thsice to pkg/seaice:
216      - modify advection in seaice to accomodate new scalar fields to be advected
217      - only muliDimAdection scheme work with seaice/thsice
218      - mapping of thsice-variables to seaice-variables, back and forth
219      - does not break the verification experiments, but does not give the
220        desired results either
221    o pkg/seaice
222      - make (default) second order advection a bit less confusing?
223    
224    checkpoint58f_post
225    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
226      to pkg/seaice):
227      - new routines thsice_map_exf and thsice_get_exf provide the interface
228      - add an additional formal parameter to thsice_solve4temp
229    o pkg/exf:
230      - add new fields wspeed, snowprecip (to be able to couple to thsice)
231      - correct Stefan-Boltzmann constant
232      - new parameter for longwave surface emittance
233      - separate some stuff from exf_bulkformulae into new routines  
234        exf_radiation, exf_wind
235      - add new parameters and constants: longwave emissivity for ocean, ice
236        and snow, evaporation parameters over ice
237      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
238        either wind from stress or stress from wind
239    o pkg/thSIce:
240    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
241    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
242       and THSICE_CALC_THICKN
243    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
244    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
245      to make debugging easier.
246    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
247    o pkg/bulk_force:
248      - clean-up comments and parameters ;
249      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
250    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
251      generate new output for test-experiment: aim.5l_cs.thSI
252    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
253      testreport accordingly
254    
255    checkpoint58e_post
256    o SEAICE_CGRID adjoint done
257    o R_STAR adjoint implemented.
258      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
259      * need to sort out init. of h0facc, etc.
260    o Make pkg/profile fully independent of ecco,cost, etc. stuff
261      to be able to use it in pure forward.
262    
263    checkpoint58d_post
264    o upgrade simple test-experiment to tutorial example:
265     step.1: duplicate the experiment and (step.2) will remove the old copy.
266      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
267      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
268      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
269      tutorial_global_oce_biogeo    <- copy of dic_example
270      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
271      tutorial_plume_on_slope       <- copy of plume_on_slope
272      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
273      tutorial_global_oce_optim     <- empty for now (David ?)
274      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
275     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
276    o correct a sign problem in cost_scat.F
277    o obcs and ptracers: fix boundary conditions for advections schemes
278      with larger stencil
279    o thsice adjoint: start
280    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
281      completeness
282    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
283      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
284    o ptracers adjoint:
285      * avoid extensive recomputatations
286      * fix missing re-init. of gptr (missed by TAF)
287    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
288      me to turn off the excessive output to STDOUT that this package produces
289    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
290      and add those terms in Vector-Invariant formulation.
291    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
292      if the control period (xx_hfluxperiod etc) is 0
293    o in profiles pkg, clean routines and fix details
294    o in ecco pkg, reading ssh data:
295      fix problem in case the model does not start at iter0=0
296    o fix mnc-pickup/restart for ptracers
297    o new package prifiles:
298      code to compute profile-based cost by Gael Forget
299      (modifs in ecco, ctrl, autodiff)
300    o Benign bug fix in initialization (spotted by M. Mazloff) of
301      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
302    
303    checkpoint58c_post
304    o adjoint: finish NLFS adjoint and provide reference output in
305      verification/global_ocean.90x40x15/results_ad_nlfs
306    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
307      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
308      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
309      with SEAICE_CGRID defined.
310    o move calendarDumps from "data" to "data.cal" and clean-up the code
311      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
312    o add useEXF & useCAL flags (for now, set in hard-coded way)
313    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
314      (were missing in NH mode, and wrong in quasihydrostatic mode).
315      waiting for Chris updated version of calc_gw to add those CALLs.
316    o fix bug in quasihydrostatic S/R ;
317      add a test for this option: global_ocean.90x40x15.qshyd
318    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
319      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
320    o add on/off flag useOffLine for package OFFLINE
321    o seaice:
322      - modify advection so that it works also on the C-grid
323      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
324        problem in multi-tile runs with C-grid
325      - add flags for clipping ice velocities and/or masking solver forcing
326      - fix drag (ocean on ice) formulation and a bug that caused noise in the
327        C-grid solver
328      - added a few comments to seaice_diffusion.F
329      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
330        are now exclusive)
331      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
332        required re-ordering the code a little:
333       + make DAIRN global variable (defined in SEAICE)
334       + move computation of the viscosities eta and zeta into a new separate
335         routine (because I need to recompute them in seaice_ocean_stress.F)
336    
337    checkpoint58b_post
338    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
339      update output.txt of exp. aim.5l_cs.thSI
340    o various mnc cleanups and improvements:
341      + shrink lookup tables by factor of ~4
342      + better error reporting when running out of lookup space
343      + able to handle longer path/file names (up to 500 chars)
344    o adjoint:
345      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
346      - TBD: "hidden" mom_vecinv recomp. in dynamics
347    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
348     (allow to differentiate between forcing components using new integer flags:
349      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
350     and add new flag to put Dissipation tendency out of Adams-Bashforth.
351    o ecco
352      - enable trend removal from SSH anomaly obs.
353    o adjoint
354      - a fix for PmEpR when #undef EXACT_CONSERV
355      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
356      - try to fix "hidden" recomp. in forward_step for NLFS
357        (NLFS seems broken sometimes after I checked it in)
358    o seaice:
359     - add c-grid version of the dynamic solver:
360       + three new routines that are the c-grid substitute lsr, dynsolver
361         and ostres
362       + put a few fields that were local to dynsolver into global common
363         blocks, so that I can move the computation of stresses etc into
364         seaice_lsr (saves coding but may break the adjoint).
365     - replace more hardwired parameters by runtime parameters
366     - add ice masks that mask the rhs of the implicit solvers where there
367       is no ice (commented out in seaice_dynsolver, because i am not sure
368       if this works properly), eventually this should replace the clipping
369       of ice velocities in seaice_dynsolver to +/-40cm/s.
370    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
371      include it only where its needed
372    o move balancing of fluxes before the call of external_forcing_surf
373    o seaice:
374      - correct units of turning angles (now they are really in degrees)
375      - move computation of GWATX/Y out of main routine into dynsolver
376      - initialize GWATX/Y in seaice_init
377    o Apply mask on Fresh-Water flux (needed for SSH forcing).
378      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
379    o seaice: add runtime flags for turning angles (default to zero)
380    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
381      and trend from exf forcing and ctrl control adjustments
382    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
383      (since checkpoint57x_post)
384    o change the default rotation period to 86164.s = the Earth rotation
385    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
386      and based on a reference stratification. Tested within hs94.cs-32x32x5.
387    o seaice advection: add code for choosing between the default (2nd order
388      central differences) and multiDim advection schemes provided by
389      pkg/generic_advdiff
390    o seaice:
391      - removed all references to SEAICE_GRID.h fields from
392        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
393        (cubed-sphere configuration will change a little)
394      - grid computations in seaice_init are obsolete now.
395      - cleaned up code a little so that is easier to read (hopefully).
396      - added new (better?) discretizations of default advection and diffusion
397        (turn on with SEAICEuseFluxForm)
398      - replace 1 in 3d global fields by kSurface in growth.F
399      
400    checkpoint58a_post
401    o seaice:
402      - bug fix in advect.F
403    o shelfice:
404      - separate shelfice load anomaly from pload (breaks with time
405        dependent forcing), => introduce constant field shelficeLoadAnomaly.
406        Its default is 0., but it may be computed more cleverly from (unknown)
407        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
408        done offline. A good approximation of the pressure load anomaly is
409        necessary to avoid large initial adjustment processes underneath
410        deep-reaching shelfice.
411      - small fix in ISOMIP shelfice_thermodynamics
412      - add more sophisticated thermodynamics of Hellmer (1989), this is
413        now the default
414      - give a few constants more intuitive names
415    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
416      if bulk formulae are used in long integration (especially EmPmR). Turn
417      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
418      if balancePrintMean, the imbalance that is substracted is printed to
419      STDOUT.
420    o fix bug (typo) in obcs_apply_eta.F
421    o add a new package shelfice which enables us to model the circulation
422      underneath shelf-ice with draughts of hundreds of meters.
423     - works
424     - to do: + include improved thermodynamics
425              + check whether kSurfC (from model/inc/SURFACE.h) can be used
426                instead of new field kTopC
427              + can we use topoFile, Ro_surf and existing code in ini_depth.F
428                instead of new field R_shelfIce and new code in ini_depth.F
429                and ini_mask_etc.F?
430              + adjust vertical mixing schemes?
431    o seaice pkg:
432     - add a cpp-flag to include a simple formula for a salinity dependent
433       freezing point of sea water at the surface
434     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
435       meridional stresses are now different (and hopefully correct)
436    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
437       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
438       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
439    o pkg/diagnostics: add options and parameters for regional-statistics
440       diagnostics ; define regions by reading a region-mask from a file
441       (might add other options later)
442    o pkg/bulk_force:
443     - add option and parameters to use AIM surface-flux formulae.
444     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
445       others forcing fields (defined in PARM05, parameter file "data") are loaded
446       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
447     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
448     - use the right EXCH call for uwind,vwind (to work on CS-grid).
449     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
450       and parameters (note: calcWindStress replaces .NOT.readwindstress).
451     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
452    
453    checkpoint58
454    o add "--embed-source" option to genmake2 which, when the supporting
455      tools can be compiled (as determined by genmake2) will turn on the
456      embed_files package which then embeds the entire MITgcm source code
457      (*.[fFhc] + Makefile) used for the build within the executable
458      - requested by CNH but off by default
459      - adds a paltry <9MB to the mitgcmuv executable in most cases
460      - only writes the output when useEMBEDSRC in eedata is true
461    o clean up 3-dim. relaxation codes:
462      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
463      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
464      * Thanks to Tom Haine for testing!
465    
466    checkpoint57z_post
467    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
468      affects output (@ truncation level) of exp. plume_on_slope ; updated.
469    o fix the pickup behavior for obcs in combination with ptracers
470    o fix a bug in ptracers_external_fields_load
471    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
472      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
473    o transfered surface NH pressure to eta field (if exactConserv).
474    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
475         and update lab_sea output.txt file.
476    o completing 3-dim. relaxation code: additional term
477         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
478      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
479      * At compile time, in "EXF_OPTIONS.h" set
480          #define  ALLOW_CLIMTEMP_RELAXATION
481          #define  ALLOW_CLIMSALT_RELAXATION
482      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
483          tauThetaClimRelax3Dim = 15552000.0,
484          tauSaltClimRelax3Dim  = 15552000.0,
485      * 3 cases:
486          1) Use a constant-in-time 3-dim. field
487          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
488          3) Real-time relax. to time-evolving prescribed field
489    o Adding Laplacian-type smoothness constraint on
490      initial and boundary (forcing) controls (ic, bc)
491      * enable at compile-time via
492        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
493      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
494      * Absolute scale somewhat unclear so far
495      * no area weighting was included since no other cost term does so far
496    
497    checkpoint57y_post
498    First step for a NLFS adjoint
499    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
500    o new init. routines for calc_r_star, calc_surf_dr
501    o still need to deal with ini_masks_etc
502    o testreport seemed happy
503    checkpoint57y_pre
504    
505    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
506    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
507    o add new offset feature to offline pkg (plus minor cleanup)
508    o cfc fixes for final year of integration
509    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
510      be in GCHEM_OPTIONS).
511    
512    checkpoint57x_post
513    o fix testreport Pb in multiple test experiment.
514    o cleanup our namelist syntax in verification:
515      - make it more F95 standards compliant (some work still needed)
516      - allows the vast majority of our tests to work with gfortran
517    o Non-Hydrostatic:
518     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
519     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
520    o Allow to apply AB on T,S rather than on AB(gT,gS):
521     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
522     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
523       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
524     - need a "clever" read_pickup to restart from the other AB formulation
525    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
526    o remove some unused variables (reduces number of compiler warnings)
527    o adjoint
528      * Disable useVariableViscosity for adjoint for time being
529        (there are a number of extensive recomputations)
530      * Initialize certain variables needed for adjoint
531    
532    checkpoint57w_post
533    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
534                 fix the singleCpuIO RS version of MDSWRITEFIELD
535       and add a WARNING if using globalFiles=T with multi-processors.
536    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
537      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
538    o tracer advection scheme:
539      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
540       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
541       was not very convenient).
542      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
543       (further tests needed for the implicit DST & Flux-Limiter schemes).
544    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
545      and sRef for convenience, handy, when you want to initialize
546      ptracers in a large domain with a constant non-zero value. Also,
547      untangle ptracers_init.F a little.
548    
549    checkpoint57v_post
550    o change dome exp. to use variable viscosity in side-drag terms.
551    o remove all the files from the cfc_offline test since they are now
552      incorporated into tutorial_cfc_offline which has been producing
553      identical results for a few days of testing
554    o add new parameter: sideDragFactor to enable half-slip-side BC
555      and change side-drag S/R to use viscosity from mom_calc_visc
556      (can switch back by setting sideDragFactor=0.); affects results at
557      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
558       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
559    o vorticity & strain are now computed without masking, to account for
560      no-slip-side BC in variable viscosity calculation ; mask is applied
561      anyway later on, before computing advection/coriolis terms.
562    o modify exp4 to test new obcs support for reading from external files
563      and for passive tracers
564    o fix behavior of ptracers_monitor when monitor output is written to a
565      netcdf-file; still not independent of monitor.F (writes in the same
566      file).
567    o change default value of tRef (put a uniform, meaningful value for ocean
568      & atmos) and initialize sRef (was missing, as Martin mentioned).
569    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
570      to be proportional to enstrophy dissipation length.  Thus,
571       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
572      This is now consistent with Smagorinsky and with the manual.
573    
574    checkpoint57u_post
575    o OBCS and PTRACERS: add open boundary support for passive tracers
576      - either use homogenous (pseudo) v.Neumann conditions or prescribe
577        OB-values from file; this is not different from the way theta and salinity
578        are treated
579      - however, Orlanski-radiation conditions are not supported, and the model
580        will stop if you use pTracers and Orlanski at the same time.
581      - beefed up the rountine obcs_external_fields_load: now only those open
582        boundary values are overwritten with values from files for which there
583        are really files, otherwise the OB-fields remain untouched. This makes
584        it possible to use different OBs at different ends of the domain (as
585        with EXF)
586    o reduce number of exch calls in shap_filt (s2).
587    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
588      truncation level) 4/5 MLAdjust test results (11&12 digits match).
589    
590    checkpoint57t_post
591    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
592    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
593      same truncation, independent of the face number: affects affects several
594      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
595    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
596      note that biharmonic viscosity + no-slip was not tested in any experiment.
597    o fix bug in non-linear free-surf side-drag ; generate new output for
598      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
599    o make mnc honor the writeBinaryPrec flag for most kinds of output
600    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
601    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
602      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
603    o add brackets in multi-terms sum to get same truncation, independent of
604      the face number (manage to get exactly same value of gU,gV at the cs-edge)
605      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
606    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
607      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
608      a maximum grid-scale Reynolds number.  Also, changes all length calculations
609      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
610      Suggested values of viscosity parameters found in mom_calc_visc.
611      Many new viscosity diagnostics available.
612    
613    checkpoint57s_post
614    o Add clearing-house for viscosity calculations, mom_calc_visc and
615      correct numerous bugs in LeithD and Smagorinsky discretizations.  
616      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
617      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
618      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
619      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
620      The Strain-Tension form is now called with useStrainTensonVisc=.true.
621      ViscAhStrain and viscAhTension are now retired.
622    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
623    o In response to JMC's bug report, genmake2 now ignores any soft-links
624      that it finds in the *current* directory when searching for files.
625      Soft-links found in any other source directories will still work as
626      they did before.
627    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
628      a C routine to unlimit the stack size
629    o mnc-ify pkg/aim snapshot vars
630    o mnc-ify pkg/land as requested by Daniel
631    o various changes to mnc including:
632      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
633      - output can now be grouped so that all files within a group
634          change the ITER portion of their names in lock-step together
635      - can now read ("global") PER-FACE (in addition to PER-TILE) files
636          and works with both EXCH1 and EXCH2 (but needs more testing)
637      - writing works for all verification test cases w/ g77 on Linux
638    
639    checkpoint57r_post
640    o make MNC variable initialization happen earlier
641    o add diagnostics for (almost) each term of the momentum Eq.
642    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
643    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
644    o remove MINIMAL_TAVE_OUTPUT option ;
645      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
646    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
647      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
648    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
649    o add time-dependent SST, SSS control
650    o cost terms in ecco/ modularized (new cost_generic.F)
651    o cost_averages routines are modularized (new cost_averagesgeneric.F)
652    o new infrastructure for seaice model vs. obs misfits in seaice/
653      * driver from the_main_loop.F is seaice_cost_driver.F
654      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
655      * gradient check in Exp. 6a of natl_box_adjoint/
656    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
657      (see README file)
658    
659    checkpoint57q_post
660    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
661    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
662      - bug was reported by Jean-Michel and Ian Fenty
663    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
664      update exp. cpl_aim+ocn output.
665    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
666      Needed for high-res. runs with large global files
667      to be able to limit tapelev size
668    o Changed some tests for adjoint:
669      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
670      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
671      * global_ocean.90x40x15/ back to default 3-level checkpointing
672    o Modifications to enable scripted COMMON to MODULE conversion
673      * verification/OpenAD/code/ has necessary scripts and description;
674      * converts, compiles and runs successfully;
675    
676    checkpoint57p_post
677    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
678    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
679      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
680    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
681    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
682      (was already the case for dissipation with mom_vecinv,
683       and also the case for grad.PhiHyd when staggered-timeStep)
684      This will allow to put dissipation out-off the AB time-stepping.
685     Unfortunately, affects truncation error. Update output of exp. that "fails"
686      (cg2d matching number) and leave the others for later: front_relax(10),
687      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
688      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
689    
690    checkpoint57o_post
691    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
692      (2) its ready to be documented during the 20050801 DocFest
693    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
694      for ideal_2D_oce and lab_sea on linux_ia32_g77
695    o set to #undef CTRL_SET_OLD_MAXCVARS_30
696      in global1x1_tot/code_seaice_adj to access indices 32, 33
697      (worth another tag)
698    
699    checkpoint57n_post
700    o adding precip control xx_precip 32
701    o adding swflux control xx_swflux 33
702    o Replacing 10 forcing penalty cost routines by 1 generic.
703    o Implementing partitioning in time-mean and variable adjustment
704      for atmos. state.
705    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
706  o in natl_box_adjoint:  o in natl_box_adjoint:
707    * updated: results_bulk/    * updated exp 1 to 10
708    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
709    o updated global1x1/*_seaice_adj/
710      to incorporate latest changes
711    o enable useSingleCpuIO for mdsio vector routines
712      (applies in particular to tapelev I/O)
713    o removed inefficient K-loop in all active_file*control*.F
714    
715  checkpoint57m_post  checkpoint57m_post
716  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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