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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.760 by jmc, Sun Dec 24 22:30:57 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 pkg/diagnostics: change vertical interpolation to be safer, and more
8  o moved ptracer ctrl index 17 -> 32     flexible (define p-levels to interpolate to in data.diagnostics);
9      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
10       diagnostic pointer.
11    o pkg/seaice: more cleaning up of seaice_growth, added many comments
12    o pkg/exf: put runoff0 and runoff into the appropriate common block
13    o fix multi-category seaice:
14     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
15       SEAICE_MULTICATEGORY
16     - fix short wave heat flux
17    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
18       and allow to use EVP solver. Change forward lab_sea: test both EVP
19       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
20    o Initial check-in of lab_sea adjoint
21      (very similar to natl_box_adjoint/code_seaice)
22      * used C-grid and EVP solver
23      * used KPP, GM/Redi
24      * uses inAdExact=.TRUE.
25      * gradient checks fail for both ADM and TLM
26        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
27        f.d. gradients actually seem more problematic than ADM, TLM gradients;
28        issue is related to forward mismatch between g77 an ifort
29    o pkg/seaice: overhaul of thermodynamics
30     - growth.F and groatb.F are replaced by new routine seaice_growth.F
31     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
32     - move a few global fields out of SEAICE.h into seaice_growth.F and
33       make them 2D (FICE/QNETO/ ...)
34     - remove FO (it is the same as QNETO)
35     - introduce a few local fields to avoid modifying external fields such
36       as atemp, etc.
37    
38    checkpoint58s_post
39    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
40      changed exf_set_gen.F so that
41        genperiod=0 means input file is one time-constant field and
42        genperiod=-12 means input file contains 12 monthly means
43    o CG2D: use pre-computed solver main-diagonal (stored in common block);
44      this affects truncation error ; generate new output file for exp. which
45      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
46        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
47        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
48        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
49        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
50        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
51    o start implementation of deep-atmosphere and anelastic formulation
52    o verification: remove 2nd copy of input files and use script "prepare_run"
53      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
54    o mom_common/vecinv/fluxform: fix a few initialisation isssues
55    o profiles: fix for multithreaded case
56    
57    o diagnostics: rename few diags:
58      s/'PRESSURE'/'RCENTER '/g
59      s/'TICE    '/'oceFreez'/g
60      s/'TAUX    '/'oceTAUX '/g
61      s/'TAUY    '/'oceTAUY '/g
62      s/'SWFLUX  '/'oceQsw  '/g
63      s/DIFx/DFxE/g
64      s/DIFy/DFyE/g
65      and add few ocean-forcing diagnostics:
66      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
67    o modifications to pkg/seaice/growth.F and budget.F, which change results of
68      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
69      as actual snow thickness.  It now refers everywhere to effective snow
70      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
71    
72    checkpoint58r_post
73    o modifications to pkg/seaice/growth.F, which change results of
74      lab_sea experiment: fixes pertain to melting snow over open water, to
75      masking EVAP under sea ice, and to using the correct AREA variable for
76      computations of EVAP, PRECIP, HSNOW, and GHEFF
77    o add ability to read bathy, salt, and theta using MNC (off by def)
78    o add flooding algorithm and advection of HSNOW for pkg/seaice;
79      both are turned off by default and do no change any results
80    o seaice advection with pkg/thsice: a step toward the use of non-linear
81      advection scheme, but #ifdef or commented out for now (requires more EXCH).
82    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
83      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
84      in natl_box (affects results @ truncation level: update output.txt)
85    o multi-threading and IO:
86      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
87      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
88        (needed to work with SingleCpuIO): tested in all verif. exp.
89    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
90      affects the results (but none of the verification test uses this scheme).
91    o Adding some pkg/diagnostics capability to pkg/seaice
92      (will certainly be subject to changes)
93    o ctrl: adding new control variables:
94      lwflux, lwdown, evap, snowprecip, apressure, runoff
95    
96    checkpoint58q_post
97    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
98      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
99      high_res_cube configuration by 4% on Columbia.
100    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
101      add (in global_with_exf/code) a version of EXF_INTERP_READ without
102      dynamical allocation (seems to work in multi-threaded).
103    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
104      single CPU io) so that TAF does not have to see EESUPPORT.h
105    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
106    
107    checkpoint58p_post
108    o obcs: stop if obcs is used with useCDscheme = .true.
109    o shelfice:
110     - fix a sign error so that no slip at shelfice interface works
111     - remove stop for combination non-hydrostatic code and shelfice. That does
112       not mean, that the results are correct, but at least they are numerically
113       stable
114    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
115    o added adjoint exch routined for all exch*3d* routines
116      and updated flow directives
117    
118    checkpoint58o_post
119    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
120      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
121    o change controling S/R for writing pickup file (new S/R do_write_pickup)
122      and clean-up reading/writing of pickup files.
123    o fix local version of read/write pickup (NH part) in rotating_tank/code
124    o simplify EXCH interface:
125     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
126     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
127    o added the regrid package
128    o shelfice:
129     - add a simple boundary layer scheme to reduce noise
130     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
131    
132    checkpoint58n_post
133    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
134       local variable (not in common block).
135    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
136      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
137      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
138        to work with SingleCpuIO.
139    o add "_d 0" to real constant of pkg/cfc subroutines ;
140       update exp. cfc_exemple & tutorial_cfc_offline output files.
141    o multi-threading and IO:
142      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
143        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
144      - barrier before and after reading.
145      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
146      - avoid using MDS_WRITELOCAL for LAND pkg output.
147      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
148        common-block variables ; Allows multi-threading with master-thread IO.
149    o change default MAX_NO_THREADS from 32 to 4 ;
150      and stop cleanly when MAX_NO_THREADS is too small.
151    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
152    
153    checkpoint58m_post
154    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
155       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
156    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
157       keep global_ocean.90x40x15 (for AD testing) with former secondary test
158       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
159    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
160        add MITgcm_tutorials (= code + all the tutorials)
161    o ecco, option to compute cost for total ssh (mean+anom)
162    o consistent with addition of ptracer and ssh in pkg/profiles
163    o profiles: adding ptracer and ssh
164    o testreport: change multi-test output-file name
165      (from output.txt.{name} to output.{name}.txt)
166    o profiles: now ok for mutli-tiles case
167    o seaice: add 4 parameters for different advection schemes for area,
168      (effective) seaice thickness, enthalphy, and snow height. Their default
169      is the standard parameter SEAICEadvScheme
170    o calc_gw:
171     - add cosFacU in zonal viscous flux (harmonic.visc.).
172     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
173       of tutorial_plume_on_slope.
174    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
175    o calc_gw: true flux-form, account for horizontal grid spacing.
176      update rotating_tank results, but not plume_on_slope (affected at
177      truncation level, 11 digits).
178    
179    checkpoint58l_post
180    o calc_gw:
181     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
182     - remove side-drag for now (need to fix it); update plume_on_slope results.
183     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
184    o commit code to make SST/SSS weights spatially variable
185      (based on either variable in-situ or variable initial T/S weights)
186    o pkg/ecco:
187      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
188        now based on horizontally varying weights wthetaLev, wsaltLev
189      * cost_averagesflags now returns year indices in addition to day, month
190      * sflux balance is performed on annual basis
191        (sflxumm, sfluxmm2, bal_sfluxmm)
192      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
193        including separate counting and multipliers
194    o pkg/rbcs
195      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
196    
197    checkpoint58k_post
198    o testreport:
199     - always build in dir. "build" (if not there, mkdir build instead of building
200       & running in input)
201     - run in dir run (if it exists), in build otherwise.
202     - call prepare_run (if input/prepare_run exists)
203     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
204    o pkg/exf modifications to interpolation and rotation routines for more
205       reasonable treatment of North Pole singularity: for tracers North Pole
206       value is set to northernmost zonal-mean value, for zonal velocity it is
207       set to zero, and for meridional velocity it is set to northernmost value.
208    o pkg/exf/exf_check_range.F
209     - add tile index to diagnostics and move stop statement to the very
210       end of the routine.
211    o pkg/diagnostics: (diagnostics_main_init.F)
212      define title of isomorphic variables according to the current config.
213    o pkg/thsice with pkg/seaice dynamics:
214    - fix domain of computation (interior only, required for exf) and do exchanges
215    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
216    o towards a standard way of dealing with multi-threading in MONITOR
217      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
218    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
219       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
220    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
221    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
222    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
223       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
224    o tracer advection:
225     - clean-up and simplify calc_common_factors.F
226     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
227       advection subroutine (but still not used within DST advection S/R)
228    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
229    
230    checkpoint58j_post
231    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
232      from file (collects calls previously in FORWARD_STEP)
233    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
234    o adjoint store dir. adjusted accordingly
235    o genmake2
236      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
237    
238    checkpoint58i_post
239    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
240      on wind stress (SEAICEstressFactor defaults to 1.)
241    o Total number of Timers is finite (<=40): comment out 2 non-essential one
242      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
243    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
244      on CS-grid: no longer loosing mass.
245    o exf & curvilinear-grid: no longer modify longitude xC & xG.
246    o pkg/ggl90: fix sloppy output and fix a bug
247    o pkg/seaice: added SEAICEuseEVPpickup parameter
248      - Set to false in order to start EVP solver with
249        non-EVP pickup files when using SEAICEuseEVP
250      - fix sign error in diffusion in seaice_calc_rhs
251    
252    checkpoint58h_post
253    * Modifications for bottom topography control
254      o replace hFacC by _hFacC at various places
255      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
256      o add non-self-adjoint cg2d_nsa
257      o update autodiff support routines
258      o re-initialise hfac after ctrl_depth_ini
259      o works for 5x5 box, doesnt work for global_ocean.90x40x15
260    * Adding verification for 5x5 box (4-layer) bottom topography control
261    
262    checkpoint58g_post
263    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
264       used for mean seasonal cycle, mean diurnal cycle); add an example
265       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
266    o pkg/ggl90:
267      - add parameter (minimum surface kinetic energy)
268      - fix bug (avoiding division by zero)
269    o couple pkg/thsice to pkg/seaice:
270      - modify advection in seaice to accomodate new scalar fields to be advected
271      - only muliDimAdection scheme work with seaice/thsice
272      - mapping of thsice-variables to seaice-variables, back and forth
273      - does not break the verification experiments, but does not give the
274        desired results either
275    o pkg/seaice
276      - make (default) second order advection a bit less confusing?
277    
278    checkpoint58f_post
279    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
280      to pkg/seaice):
281      - new routines thsice_map_exf and thsice_get_exf provide the interface
282      - add an additional formal parameter to thsice_solve4temp
283    o pkg/exf:
284      - add new fields wspeed, snowprecip (to be able to couple to thsice)
285      - correct Stefan-Boltzmann constant
286      - new parameter for longwave surface emittance
287      - separate some stuff from exf_bulkformulae into new routines  
288        exf_radiation, exf_wind
289      - add new parameters and constants: longwave emissivity for ocean, ice
290        and snow, evaporation parameters over ice
291      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
292        either wind from stress or stress from wind
293    o pkg/thSIce:
294    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
295    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
296       and THSICE_CALC_THICKN
297    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
298    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
299      to make debugging easier.
300    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
301    o pkg/bulk_force:
302      - clean-up comments and parameters ;
303      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
304    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
305      generate new output for test-experiment: aim.5l_cs.thSI
306    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
307      testreport accordingly
308    
309    checkpoint58e_post
310    o SEAICE_CGRID adjoint done
311    o R_STAR adjoint implemented.
312      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
313      * need to sort out init. of h0facc, etc.
314    o Make pkg/profile fully independent of ecco,cost, etc. stuff
315      to be able to use it in pure forward.
316    
317    checkpoint58d_post
318    o upgrade simple test-experiment to tutorial example:
319     step.1: duplicate the experiment and (step.2) will remove the old copy.
320      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
321      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
322      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
323      tutorial_global_oce_biogeo    <- copy of dic_example
324      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
325      tutorial_plume_on_slope       <- copy of plume_on_slope
326      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
327      tutorial_global_oce_optim     <- empty for now (David ?)
328      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
329     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
330    o correct a sign problem in cost_scat.F
331    o obcs and ptracers: fix boundary conditions for advections schemes
332      with larger stencil
333    o thsice adjoint: start
334    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
335      completeness
336    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
337      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
338    o ptracers adjoint:
339      * avoid extensive recomputatations
340      * fix missing re-init. of gptr (missed by TAF)
341    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
342      me to turn off the excessive output to STDOUT that this package produces
343    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
344      and add those terms in Vector-Invariant formulation.
345    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
346      if the control period (xx_hfluxperiod etc) is 0
347    o in profiles pkg, clean routines and fix details
348    o in ecco pkg, reading ssh data:
349      fix problem in case the model does not start at iter0=0
350    o fix mnc-pickup/restart for ptracers
351    o new package prifiles:
352      code to compute profile-based cost by Gael Forget
353      (modifs in ecco, ctrl, autodiff)
354    o Benign bug fix in initialization (spotted by M. Mazloff) of
355      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
356    
357    checkpoint58c_post
358    o adjoint: finish NLFS adjoint and provide reference output in
359      verification/global_ocean.90x40x15/results_ad_nlfs
360    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
361      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
362      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
363      with SEAICE_CGRID defined.
364    o move calendarDumps from "data" to "data.cal" and clean-up the code
365      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
366    o add useEXF & useCAL flags (for now, set in hard-coded way)
367    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
368      (were missing in NH mode, and wrong in quasihydrostatic mode).
369      waiting for Chris updated version of calc_gw to add those CALLs.
370    o fix bug in quasihydrostatic S/R ;
371      add a test for this option: global_ocean.90x40x15.qshyd
372    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
373      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
374    o add on/off flag useOffLine for package OFFLINE
375    o seaice:
376      - modify advection so that it works also on the C-grid
377      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
378        problem in multi-tile runs with C-grid
379      - add flags for clipping ice velocities and/or masking solver forcing
380      - fix drag (ocean on ice) formulation and a bug that caused noise in the
381        C-grid solver
382      - added a few comments to seaice_diffusion.F
383      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
384        are now exclusive)
385      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
386        required re-ordering the code a little:
387       + make DAIRN global variable (defined in SEAICE)
388       + move computation of the viscosities eta and zeta into a new separate
389         routine (because I need to recompute them in seaice_ocean_stress.F)
390    
391    checkpoint58b_post
392    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
393      update output.txt of exp. aim.5l_cs.thSI
394    o various mnc cleanups and improvements:
395      + shrink lookup tables by factor of ~4
396      + better error reporting when running out of lookup space
397      + able to handle longer path/file names (up to 500 chars)
398    o adjoint:
399      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
400      - TBD: "hidden" mom_vecinv recomp. in dynamics
401    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
402     (allow to differentiate between forcing components using new integer flags:
403      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
404     and add new flag to put Dissipation tendency out of Adams-Bashforth.
405    o ecco
406      - enable trend removal from SSH anomaly obs.
407    o adjoint
408      - a fix for PmEpR when #undef EXACT_CONSERV
409      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
410      - try to fix "hidden" recomp. in forward_step for NLFS
411        (NLFS seems broken sometimes after I checked it in)
412    o seaice:
413     - add c-grid version of the dynamic solver:
414       + three new routines that are the c-grid substitute lsr, dynsolver
415         and ostres
416       + put a few fields that were local to dynsolver into global common
417         blocks, so that I can move the computation of stresses etc into
418         seaice_lsr (saves coding but may break the adjoint).
419     - replace more hardwired parameters by runtime parameters
420     - add ice masks that mask the rhs of the implicit solvers where there
421       is no ice (commented out in seaice_dynsolver, because i am not sure
422       if this works properly), eventually this should replace the clipping
423       of ice velocities in seaice_dynsolver to +/-40cm/s.
424    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
425      include it only where its needed
426    o move balancing of fluxes before the call of external_forcing_surf
427    o seaice:
428      - correct units of turning angles (now they are really in degrees)
429      - move computation of GWATX/Y out of main routine into dynsolver
430      - initialize GWATX/Y in seaice_init
431    o Apply mask on Fresh-Water flux (needed for SSH forcing).
432      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
433    o seaice: add runtime flags for turning angles (default to zero)
434    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
435      and trend from exf forcing and ctrl control adjustments
436    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
437      (since checkpoint57x_post)
438    o change the default rotation period to 86164.s = the Earth rotation
439    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
440      and based on a reference stratification. Tested within hs94.cs-32x32x5.
441    o seaice advection: add code for choosing between the default (2nd order
442      central differences) and multiDim advection schemes provided by
443      pkg/generic_advdiff
444    o seaice:
445      - removed all references to SEAICE_GRID.h fields from
446        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
447        (cubed-sphere configuration will change a little)
448      - grid computations in seaice_init are obsolete now.
449      - cleaned up code a little so that is easier to read (hopefully).
450      - added new (better?) discretizations of default advection and diffusion
451        (turn on with SEAICEuseFluxForm)
452      - replace 1 in 3d global fields by kSurface in growth.F
453      
454    checkpoint58a_post
455    o seaice:
456      - bug fix in advect.F
457    o shelfice:
458      - separate shelfice load anomaly from pload (breaks with time
459        dependent forcing), => introduce constant field shelficeLoadAnomaly.
460        Its default is 0., but it may be computed more cleverly from (unknown)
461        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
462        done offline. A good approximation of the pressure load anomaly is
463        necessary to avoid large initial adjustment processes underneath
464        deep-reaching shelfice.
465      - small fix in ISOMIP shelfice_thermodynamics
466      - add more sophisticated thermodynamics of Hellmer (1989), this is
467        now the default
468      - give a few constants more intuitive names
469    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
470      if bulk formulae are used in long integration (especially EmPmR). Turn
471      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
472      if balancePrintMean, the imbalance that is substracted is printed to
473      STDOUT.
474    o fix bug (typo) in obcs_apply_eta.F
475    o add a new package shelfice which enables us to model the circulation
476      underneath shelf-ice with draughts of hundreds of meters.
477     - works
478     - to do: + include improved thermodynamics
479              + check whether kSurfC (from model/inc/SURFACE.h) can be used
480                instead of new field kTopC
481              + can we use topoFile, Ro_surf and existing code in ini_depth.F
482                instead of new field R_shelfIce and new code in ini_depth.F
483                and ini_mask_etc.F?
484              + adjust vertical mixing schemes?
485    o seaice pkg:
486     - add a cpp-flag to include a simple formula for a salinity dependent
487       freezing point of sea water at the surface
488     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
489       meridional stresses are now different (and hopefully correct)
490    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
491       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
492       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
493    o pkg/diagnostics: add options and parameters for regional-statistics
494       diagnostics ; define regions by reading a region-mask from a file
495       (might add other options later)
496    o pkg/bulk_force:
497     - add option and parameters to use AIM surface-flux formulae.
498     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
499       others forcing fields (defined in PARM05, parameter file "data") are loaded
500       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
501     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
502     - use the right EXCH call for uwind,vwind (to work on CS-grid).
503     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
504       and parameters (note: calcWindStress replaces .NOT.readwindstress).
505     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
506    
507    checkpoint58
508    o add "--embed-source" option to genmake2 which, when the supporting
509      tools can be compiled (as determined by genmake2) will turn on the
510      embed_files package which then embeds the entire MITgcm source code
511      (*.[fFhc] + Makefile) used for the build within the executable
512      - requested by CNH but off by default
513      - adds a paltry <9MB to the mitgcmuv executable in most cases
514      - only writes the output when useEMBEDSRC in eedata is true
515    o clean up 3-dim. relaxation codes:
516      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
517      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
518      * Thanks to Tom Haine for testing!
519    
520    checkpoint57z_post
521    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
522      affects output (@ truncation level) of exp. plume_on_slope ; updated.
523    o fix the pickup behavior for obcs in combination with ptracers
524    o fix a bug in ptracers_external_fields_load
525    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
526      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
527    o transfered surface NH pressure to eta field (if exactConserv).
528    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
529         and update lab_sea output.txt file.
530    o completing 3-dim. relaxation code: additional term
531         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
532      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
533      * At compile time, in "EXF_OPTIONS.h" set
534          #define  ALLOW_CLIMTEMP_RELAXATION
535          #define  ALLOW_CLIMSALT_RELAXATION
536      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
537          tauThetaClimRelax3Dim = 15552000.0,
538          tauSaltClimRelax3Dim  = 15552000.0,
539      * 3 cases:
540          1) Use a constant-in-time 3-dim. field
541          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
542          3) Real-time relax. to time-evolving prescribed field
543    o Adding Laplacian-type smoothness constraint on
544      initial and boundary (forcing) controls (ic, bc)
545      * enable at compile-time via
546        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
547      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
548      * Absolute scale somewhat unclear so far
549      * no area weighting was included since no other cost term does so far
550    
551    checkpoint57y_post
552    First step for a NLFS adjoint
553    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
554    o new init. routines for calc_r_star, calc_surf_dr
555    o still need to deal with ini_masks_etc
556    o testreport seemed happy
557    checkpoint57y_pre
558    
559    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
560    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
561    o add new offset feature to offline pkg (plus minor cleanup)
562    o cfc fixes for final year of integration
563    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
564      be in GCHEM_OPTIONS).
565    
566    checkpoint57x_post
567    o fix testreport Pb in multiple test experiment.
568    o cleanup our namelist syntax in verification:
569      - make it more F95 standards compliant (some work still needed)
570      - allows the vast majority of our tests to work with gfortran
571    o Non-Hydrostatic:
572     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
573     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
574    o Allow to apply AB on T,S rather than on AB(gT,gS):
575     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
576     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
577       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
578     - need a "clever" read_pickup to restart from the other AB formulation
579    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
580    o remove some unused variables (reduces number of compiler warnings)
581    o adjoint
582      * Disable useVariableViscosity for adjoint for time being
583        (there are a number of extensive recomputations)
584      * Initialize certain variables needed for adjoint
585    
586    checkpoint57w_post
587    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
588                 fix the singleCpuIO RS version of MDSWRITEFIELD
589       and add a WARNING if using globalFiles=T with multi-processors.
590    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
591      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
592    o tracer advection scheme:
593      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
594       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
595       was not very convenient).
596      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
597       (further tests needed for the implicit DST & Flux-Limiter schemes).
598    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
599      and sRef for convenience, handy, when you want to initialize
600      ptracers in a large domain with a constant non-zero value. Also,
601      untangle ptracers_init.F a little.
602    
603    checkpoint57v_post
604    o change dome exp. to use variable viscosity in side-drag terms.
605    o remove all the files from the cfc_offline test since they are now
606      incorporated into tutorial_cfc_offline which has been producing
607      identical results for a few days of testing
608    o add new parameter: sideDragFactor to enable half-slip-side BC
609      and change side-drag S/R to use viscosity from mom_calc_visc
610      (can switch back by setting sideDragFactor=0.); affects results at
611      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
612       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
613    o vorticity & strain are now computed without masking, to account for
614      no-slip-side BC in variable viscosity calculation ; mask is applied
615      anyway later on, before computing advection/coriolis terms.
616    o modify exp4 to test new obcs support for reading from external files
617      and for passive tracers
618    o fix behavior of ptracers_monitor when monitor output is written to a
619      netcdf-file; still not independent of monitor.F (writes in the same
620      file).
621    o change default value of tRef (put a uniform, meaningful value for ocean
622      & atmos) and initialize sRef (was missing, as Martin mentioned).
623    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
624      to be proportional to enstrophy dissipation length.  Thus,
625       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
626      This is now consistent with Smagorinsky and with the manual.
627    
628    checkpoint57u_post
629    o OBCS and PTRACERS: add open boundary support for passive tracers
630      - either use homogenous (pseudo) v.Neumann conditions or prescribe
631        OB-values from file; this is not different from the way theta and salinity
632        are treated
633      - however, Orlanski-radiation conditions are not supported, and the model
634        will stop if you use pTracers and Orlanski at the same time.
635      - beefed up the rountine obcs_external_fields_load: now only those open
636        boundary values are overwritten with values from files for which there
637        are really files, otherwise the OB-fields remain untouched. This makes
638        it possible to use different OBs at different ends of the domain (as
639        with EXF)
640    o reduce number of exch calls in shap_filt (s2).
641    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
642      truncation level) 4/5 MLAdjust test results (11&12 digits match).
643    
644    checkpoint57t_post
645    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
646    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
647      same truncation, independent of the face number: affects affects several
648      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
649    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
650      note that biharmonic viscosity + no-slip was not tested in any experiment.
651    o fix bug in non-linear free-surf side-drag ; generate new output for
652      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
653    o make mnc honor the writeBinaryPrec flag for most kinds of output
654    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
655    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
656      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
657    o add brackets in multi-terms sum to get same truncation, independent of
658      the face number (manage to get exactly same value of gU,gV at the cs-edge)
659      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
660    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
661      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
662      a maximum grid-scale Reynolds number.  Also, changes all length calculations
663      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
664      Suggested values of viscosity parameters found in mom_calc_visc.
665      Many new viscosity diagnostics available.
666    
667    checkpoint57s_post
668    o Add clearing-house for viscosity calculations, mom_calc_visc and
669      correct numerous bugs in LeithD and Smagorinsky discretizations.  
670      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
671      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
672      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
673      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
674      The Strain-Tension form is now called with useStrainTensonVisc=.true.
675      ViscAhStrain and viscAhTension are now retired.
676    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
677    o In response to JMC's bug report, genmake2 now ignores any soft-links
678      that it finds in the *current* directory when searching for files.
679      Soft-links found in any other source directories will still work as
680      they did before.
681    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
682      a C routine to unlimit the stack size
683    o mnc-ify pkg/aim snapshot vars
684    o mnc-ify pkg/land as requested by Daniel
685    o various changes to mnc including:
686      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
687      - output can now be grouped so that all files within a group
688          change the ITER portion of their names in lock-step together
689      - can now read ("global") PER-FACE (in addition to PER-TILE) files
690          and works with both EXCH1 and EXCH2 (but needs more testing)
691      - writing works for all verification test cases w/ g77 on Linux
692    
693    checkpoint57r_post
694    o make MNC variable initialization happen earlier
695    o add diagnostics for (almost) each term of the momentum Eq.
696    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
697    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
698    o remove MINIMAL_TAVE_OUTPUT option ;
699      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
700    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
701      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
702    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
703    o add time-dependent SST, SSS control
704    o cost terms in ecco/ modularized (new cost_generic.F)
705    o cost_averages routines are modularized (new cost_averagesgeneric.F)
706    o new infrastructure for seaice model vs. obs misfits in seaice/
707      * driver from the_main_loop.F is seaice_cost_driver.F
708      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
709      * gradient check in Exp. 6a of natl_box_adjoint/
710    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
711      (see README file)
712    
713    checkpoint57q_post
714    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
715    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
716      - bug was reported by Jean-Michel and Ian Fenty
717    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
718      update exp. cpl_aim+ocn output.
719    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
720      Needed for high-res. runs with large global files
721      to be able to limit tapelev size
722    o Changed some tests for adjoint:
723      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
724      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
725      * global_ocean.90x40x15/ back to default 3-level checkpointing
726    o Modifications to enable scripted COMMON to MODULE conversion
727      * verification/OpenAD/code/ has necessary scripts and description;
728      * converts, compiles and runs successfully;
729    
730    checkpoint57p_post
731    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
732    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
733      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
734    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
735    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
736      (was already the case for dissipation with mom_vecinv,
737       and also the case for grad.PhiHyd when staggered-timeStep)
738      This will allow to put dissipation out-off the AB time-stepping.
739     Unfortunately, affects truncation error. Update output of exp. that "fails"
740      (cg2d matching number) and leave the others for later: front_relax(10),
741      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
742      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
743    
744    checkpoint57o_post
745    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
746      (2) its ready to be documented during the 20050801 DocFest
747    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
748      for ideal_2D_oce and lab_sea on linux_ia32_g77
749    o set to #undef CTRL_SET_OLD_MAXCVARS_30
750      in global1x1_tot/code_seaice_adj to access indices 32, 33
751      (worth another tag)
752    
753    checkpoint57n_post
754    o adding precip control xx_precip 32
755    o adding swflux control xx_swflux 33
756    o Replacing 10 forcing penalty cost routines by 1 generic.
757    o Implementing partitioning in time-mean and variable adjustment
758      for atmos. state.
759    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
760  o in natl_box_adjoint:  o in natl_box_adjoint:
761    * updated: results_bulk/    * updated exp 1 to 10
762    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
763    o updated global1x1/*_seaice_adj/
764      to incorporate latest changes
765    o enable useSingleCpuIO for mdsio vector routines
766      (applies in particular to tapelev I/O)
767    o removed inefficient K-loop in all active_file*control*.F
768    
769  checkpoint57m_post  checkpoint57m_post
770  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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