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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.762 by jmc, Sat Dec 30 22:15:37 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  checkpoint58t_post
8  o moved ptracer ctrl index 17 -> 32  o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
9    o pkg/mdsio:
10     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
11       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
12       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
13     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
14     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
15       either MDS_READ_FIELD or MDS_WRITE_FIELD )
16     - new S/R (to replace MDSWRITEMETA), which allows to write more
17       informations (variable names, time ...) to meta files.
18     - modify rdmds.m to give back the meta file content.
19    o pkg/diagnostics: change vertical interpolation to be safer, and more
20       flexible (define p-levels to interpolate to in data.diagnostics);
21      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
22       diagnostic pointer.
23    o pkg/seaice: more cleaning up of seaice_growth, added many comments
24    o pkg/exf: put runoff0 and runoff into the appropriate common block
25    o fix multi-category seaice:
26     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
27       SEAICE_MULTICATEGORY
28     - fix short wave heat flux
29    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
30       and allow to use EVP solver. Change forward lab_sea: test both EVP
31       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
32    o Initial check-in of lab_sea adjoint
33      (very similar to natl_box_adjoint/code_seaice)
34      * used C-grid and EVP solver
35      * used KPP, GM/Redi
36      * uses inAdExact=.TRUE.
37      * gradient checks fail for both ADM and TLM
38        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
39        f.d. gradients actually seem more problematic than ADM, TLM gradients;
40        issue is related to forward mismatch between g77 an ifort
41    o pkg/seaice: overhaul of thermodynamics
42     - growth.F and groatb.F are replaced by new routine seaice_growth.F
43     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
44     - move a few global fields out of SEAICE.h into seaice_growth.F and
45       make them 2D (FICE/QNETO/ ...)
46     - remove FO (it is the same as QNETO)
47     - introduce a few local fields to avoid modifying external fields such
48       as atemp, etc.
49    
50    checkpoint58s_post
51    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
52      changed exf_set_gen.F so that
53        genperiod=0 means input file is one time-constant field and
54        genperiod=-12 means input file contains 12 monthly means
55    o CG2D: use pre-computed solver main-diagonal (stored in common block);
56      this affects truncation error ; generate new output file for exp. which
57      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
58        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
59        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
60        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
61        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
62        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
63    o start implementation of deep-atmosphere and anelastic formulation
64    o verification: remove 2nd copy of input files and use script "prepare_run"
65      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
66    o mom_common/vecinv/fluxform: fix a few initialisation isssues
67    o profiles: fix for multithreaded case
68    
69    o diagnostics: rename few diags:
70      s/'PRESSURE'/'RCENTER '/g
71      s/'TICE    '/'oceFreez'/g
72      s/'TAUX    '/'oceTAUX '/g
73      s/'TAUY    '/'oceTAUY '/g
74      s/'SWFLUX  '/'oceQsw  '/g
75      s/DIFx/DFxE/g
76      s/DIFy/DFyE/g
77      and add few ocean-forcing diagnostics:
78      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
79    o modifications to pkg/seaice/growth.F and budget.F, which change results of
80      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
81      as actual snow thickness.  It now refers everywhere to effective snow
82      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
83    
84    checkpoint58r_post
85    o modifications to pkg/seaice/growth.F, which change results of
86      lab_sea experiment: fixes pertain to melting snow over open water, to
87      masking EVAP under sea ice, and to using the correct AREA variable for
88      computations of EVAP, PRECIP, HSNOW, and GHEFF
89    o add ability to read bathy, salt, and theta using MNC (off by def)
90    o add flooding algorithm and advection of HSNOW for pkg/seaice;
91      both are turned off by default and do no change any results
92    o seaice advection with pkg/thsice: a step toward the use of non-linear
93      advection scheme, but #ifdef or commented out for now (requires more EXCH).
94    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
95      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
96      in natl_box (affects results @ truncation level: update output.txt)
97    o multi-threading and IO:
98      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
99      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
100        (needed to work with SingleCpuIO): tested in all verif. exp.
101    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
102      affects the results (but none of the verification test uses this scheme).
103    o Adding some pkg/diagnostics capability to pkg/seaice
104      (will certainly be subject to changes)
105    o ctrl: adding new control variables:
106      lwflux, lwdown, evap, snowprecip, apressure, runoff
107    
108    checkpoint58q_post
109    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
110      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
111      high_res_cube configuration by 4% on Columbia.
112    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
113      add (in global_with_exf/code) a version of EXF_INTERP_READ without
114      dynamical allocation (seems to work in multi-threaded).
115    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
116      single CPU io) so that TAF does not have to see EESUPPORT.h
117    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
118    
119    checkpoint58p_post
120    o obcs: stop if obcs is used with useCDscheme = .true.
121    o shelfice:
122     - fix a sign error so that no slip at shelfice interface works
123     - remove stop for combination non-hydrostatic code and shelfice. That does
124       not mean, that the results are correct, but at least they are numerically
125       stable
126    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
127    o added adjoint exch routined for all exch*3d* routines
128      and updated flow directives
129    
130    checkpoint58o_post
131    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
132      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
133    o change controling S/R for writing pickup file (new S/R do_write_pickup)
134      and clean-up reading/writing of pickup files.
135    o fix local version of read/write pickup (NH part) in rotating_tank/code
136    o simplify EXCH interface:
137     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
138     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
139    o added the regrid package
140    o shelfice:
141     - add a simple boundary layer scheme to reduce noise
142     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
143    
144    checkpoint58n_post
145    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
146       local variable (not in common block).
147    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
148      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
149      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
150        to work with SingleCpuIO.
151    o add "_d 0" to real constant of pkg/cfc subroutines ;
152       update exp. cfc_exemple & tutorial_cfc_offline output files.
153    o multi-threading and IO:
154      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
155        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
156      - barrier before and after reading.
157      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
158      - avoid using MDS_WRITELOCAL for LAND pkg output.
159      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
160        common-block variables ; Allows multi-threading with master-thread IO.
161    o change default MAX_NO_THREADS from 32 to 4 ;
162      and stop cleanly when MAX_NO_THREADS is too small.
163    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
164    
165    checkpoint58m_post
166    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
167       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
168    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
169       keep global_ocean.90x40x15 (for AD testing) with former secondary test
170       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
171    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
172        add MITgcm_tutorials (= code + all the tutorials)
173    o ecco, option to compute cost for total ssh (mean+anom)
174    o consistent with addition of ptracer and ssh in pkg/profiles
175    o profiles: adding ptracer and ssh
176    o testreport: change multi-test output-file name
177      (from output.txt.{name} to output.{name}.txt)
178    o profiles: now ok for mutli-tiles case
179    o seaice: add 4 parameters for different advection schemes for area,
180      (effective) seaice thickness, enthalphy, and snow height. Their default
181      is the standard parameter SEAICEadvScheme
182    o calc_gw:
183     - add cosFacU in zonal viscous flux (harmonic.visc.).
184     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
185       of tutorial_plume_on_slope.
186    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
187    o calc_gw: true flux-form, account for horizontal grid spacing.
188      update rotating_tank results, but not plume_on_slope (affected at
189      truncation level, 11 digits).
190    
191    checkpoint58l_post
192    o calc_gw:
193     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
194     - remove side-drag for now (need to fix it); update plume_on_slope results.
195     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
196    o commit code to make SST/SSS weights spatially variable
197      (based on either variable in-situ or variable initial T/S weights)
198    o pkg/ecco:
199      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
200        now based on horizontally varying weights wthetaLev, wsaltLev
201      * cost_averagesflags now returns year indices in addition to day, month
202      * sflux balance is performed on annual basis
203        (sflxumm, sfluxmm2, bal_sfluxmm)
204      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
205        including separate counting and multipliers
206    o pkg/rbcs
207      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
208    
209    checkpoint58k_post
210    o testreport:
211     - always build in dir. "build" (if not there, mkdir build instead of building
212       & running in input)
213     - run in dir run (if it exists), in build otherwise.
214     - call prepare_run (if input/prepare_run exists)
215     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
216    o pkg/exf modifications to interpolation and rotation routines for more
217       reasonable treatment of North Pole singularity: for tracers North Pole
218       value is set to northernmost zonal-mean value, for zonal velocity it is
219       set to zero, and for meridional velocity it is set to northernmost value.
220    o pkg/exf/exf_check_range.F
221     - add tile index to diagnostics and move stop statement to the very
222       end of the routine.
223    o pkg/diagnostics: (diagnostics_main_init.F)
224      define title of isomorphic variables according to the current config.
225    o pkg/thsice with pkg/seaice dynamics:
226    - fix domain of computation (interior only, required for exf) and do exchanges
227    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
228    o towards a standard way of dealing with multi-threading in MONITOR
229      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
230    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
231       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
232    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
233    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
234    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
235       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
236    o tracer advection:
237     - clean-up and simplify calc_common_factors.F
238     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
239       advection subroutine (but still not used within DST advection S/R)
240    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
241    
242    checkpoint58j_post
243    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
244      from file (collects calls previously in FORWARD_STEP)
245    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
246    o adjoint store dir. adjusted accordingly
247    o genmake2
248      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
249    
250    checkpoint58i_post
251    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
252      on wind stress (SEAICEstressFactor defaults to 1.)
253    o Total number of Timers is finite (<=40): comment out 2 non-essential one
254      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
255    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
256      on CS-grid: no longer loosing mass.
257    o exf & curvilinear-grid: no longer modify longitude xC & xG.
258    o pkg/ggl90: fix sloppy output and fix a bug
259    o pkg/seaice: added SEAICEuseEVPpickup parameter
260      - Set to false in order to start EVP solver with
261        non-EVP pickup files when using SEAICEuseEVP
262      - fix sign error in diffusion in seaice_calc_rhs
263    
264    checkpoint58h_post
265    * Modifications for bottom topography control
266      o replace hFacC by _hFacC at various places
267      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
268      o add non-self-adjoint cg2d_nsa
269      o update autodiff support routines
270      o re-initialise hfac after ctrl_depth_ini
271      o works for 5x5 box, doesnt work for global_ocean.90x40x15
272    * Adding verification for 5x5 box (4-layer) bottom topography control
273    
274    checkpoint58g_post
275    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
276       used for mean seasonal cycle, mean diurnal cycle); add an example
277       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
278    o pkg/ggl90:
279      - add parameter (minimum surface kinetic energy)
280      - fix bug (avoiding division by zero)
281    o couple pkg/thsice to pkg/seaice:
282      - modify advection in seaice to accomodate new scalar fields to be advected
283      - only muliDimAdection scheme work with seaice/thsice
284      - mapping of thsice-variables to seaice-variables, back and forth
285      - does not break the verification experiments, but does not give the
286        desired results either
287    o pkg/seaice
288      - make (default) second order advection a bit less confusing?
289    
290    checkpoint58f_post
291    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
292      to pkg/seaice):
293      - new routines thsice_map_exf and thsice_get_exf provide the interface
294      - add an additional formal parameter to thsice_solve4temp
295    o pkg/exf:
296      - add new fields wspeed, snowprecip (to be able to couple to thsice)
297      - correct Stefan-Boltzmann constant
298      - new parameter for longwave surface emittance
299      - separate some stuff from exf_bulkformulae into new routines  
300        exf_radiation, exf_wind
301      - add new parameters and constants: longwave emissivity for ocean, ice
302        and snow, evaporation parameters over ice
303      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
304        either wind from stress or stress from wind
305    o pkg/thSIce:
306    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
307    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
308       and THSICE_CALC_THICKN
309    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
310    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
311      to make debugging easier.
312    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
313    o pkg/bulk_force:
314      - clean-up comments and parameters ;
315      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
316    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
317      generate new output for test-experiment: aim.5l_cs.thSI
318    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
319      testreport accordingly
320    
321    checkpoint58e_post
322    o SEAICE_CGRID adjoint done
323    o R_STAR adjoint implemented.
324      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
325      * need to sort out init. of h0facc, etc.
326    o Make pkg/profile fully independent of ecco,cost, etc. stuff
327      to be able to use it in pure forward.
328    
329    checkpoint58d_post
330    o upgrade simple test-experiment to tutorial example:
331     step.1: duplicate the experiment and (step.2) will remove the old copy.
332      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
333      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
334      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
335      tutorial_global_oce_biogeo    <- copy of dic_example
336      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
337      tutorial_plume_on_slope       <- copy of plume_on_slope
338      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
339      tutorial_global_oce_optim     <- empty for now (David ?)
340      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
341     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
342    o correct a sign problem in cost_scat.F
343    o obcs and ptracers: fix boundary conditions for advections schemes
344      with larger stencil
345    o thsice adjoint: start
346    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
347      completeness
348    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
349      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
350    o ptracers adjoint:
351      * avoid extensive recomputatations
352      * fix missing re-init. of gptr (missed by TAF)
353    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
354      me to turn off the excessive output to STDOUT that this package produces
355    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
356      and add those terms in Vector-Invariant formulation.
357    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
358      if the control period (xx_hfluxperiod etc) is 0
359    o in profiles pkg, clean routines and fix details
360    o in ecco pkg, reading ssh data:
361      fix problem in case the model does not start at iter0=0
362    o fix mnc-pickup/restart for ptracers
363    o new package prifiles:
364      code to compute profile-based cost by Gael Forget
365      (modifs in ecco, ctrl, autodiff)
366    o Benign bug fix in initialization (spotted by M. Mazloff) of
367      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
368    
369    checkpoint58c_post
370    o adjoint: finish NLFS adjoint and provide reference output in
371      verification/global_ocean.90x40x15/results_ad_nlfs
372    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
373      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
374      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
375      with SEAICE_CGRID defined.
376    o move calendarDumps from "data" to "data.cal" and clean-up the code
377      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
378    o add useEXF & useCAL flags (for now, set in hard-coded way)
379    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
380      (were missing in NH mode, and wrong in quasihydrostatic mode).
381      waiting for Chris updated version of calc_gw to add those CALLs.
382    o fix bug in quasihydrostatic S/R ;
383      add a test for this option: global_ocean.90x40x15.qshyd
384    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
385      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
386    o add on/off flag useOffLine for package OFFLINE
387    o seaice:
388      - modify advection so that it works also on the C-grid
389      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
390        problem in multi-tile runs with C-grid
391      - add flags for clipping ice velocities and/or masking solver forcing
392      - fix drag (ocean on ice) formulation and a bug that caused noise in the
393        C-grid solver
394      - added a few comments to seaice_diffusion.F
395      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
396        are now exclusive)
397      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
398        required re-ordering the code a little:
399       + make DAIRN global variable (defined in SEAICE)
400       + move computation of the viscosities eta and zeta into a new separate
401         routine (because I need to recompute them in seaice_ocean_stress.F)
402    
403    checkpoint58b_post
404    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
405      update output.txt of exp. aim.5l_cs.thSI
406    o various mnc cleanups and improvements:
407      + shrink lookup tables by factor of ~4
408      + better error reporting when running out of lookup space
409      + able to handle longer path/file names (up to 500 chars)
410    o adjoint:
411      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
412      - TBD: "hidden" mom_vecinv recomp. in dynamics
413    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
414     (allow to differentiate between forcing components using new integer flags:
415      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
416     and add new flag to put Dissipation tendency out of Adams-Bashforth.
417    o ecco
418      - enable trend removal from SSH anomaly obs.
419    o adjoint
420      - a fix for PmEpR when #undef EXACT_CONSERV
421      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
422      - try to fix "hidden" recomp. in forward_step for NLFS
423        (NLFS seems broken sometimes after I checked it in)
424    o seaice:
425     - add c-grid version of the dynamic solver:
426       + three new routines that are the c-grid substitute lsr, dynsolver
427         and ostres
428       + put a few fields that were local to dynsolver into global common
429         blocks, so that I can move the computation of stresses etc into
430         seaice_lsr (saves coding but may break the adjoint).
431     - replace more hardwired parameters by runtime parameters
432     - add ice masks that mask the rhs of the implicit solvers where there
433       is no ice (commented out in seaice_dynsolver, because i am not sure
434       if this works properly), eventually this should replace the clipping
435       of ice velocities in seaice_dynsolver to +/-40cm/s.
436    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
437      include it only where its needed
438    o move balancing of fluxes before the call of external_forcing_surf
439    o seaice:
440      - correct units of turning angles (now they are really in degrees)
441      - move computation of GWATX/Y out of main routine into dynsolver
442      - initialize GWATX/Y in seaice_init
443    o Apply mask on Fresh-Water flux (needed for SSH forcing).
444      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
445    o seaice: add runtime flags for turning angles (default to zero)
446    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
447      and trend from exf forcing and ctrl control adjustments
448    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
449      (since checkpoint57x_post)
450    o change the default rotation period to 86164.s = the Earth rotation
451    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
452      and based on a reference stratification. Tested within hs94.cs-32x32x5.
453    o seaice advection: add code for choosing between the default (2nd order
454      central differences) and multiDim advection schemes provided by
455      pkg/generic_advdiff
456    o seaice:
457      - removed all references to SEAICE_GRID.h fields from
458        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
459        (cubed-sphere configuration will change a little)
460      - grid computations in seaice_init are obsolete now.
461      - cleaned up code a little so that is easier to read (hopefully).
462      - added new (better?) discretizations of default advection and diffusion
463        (turn on with SEAICEuseFluxForm)
464      - replace 1 in 3d global fields by kSurface in growth.F
465      
466    checkpoint58a_post
467    o seaice:
468      - bug fix in advect.F
469    o shelfice:
470      - separate shelfice load anomaly from pload (breaks with time
471        dependent forcing), => introduce constant field shelficeLoadAnomaly.
472        Its default is 0., but it may be computed more cleverly from (unknown)
473        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
474        done offline. A good approximation of the pressure load anomaly is
475        necessary to avoid large initial adjustment processes underneath
476        deep-reaching shelfice.
477      - small fix in ISOMIP shelfice_thermodynamics
478      - add more sophisticated thermodynamics of Hellmer (1989), this is
479        now the default
480      - give a few constants more intuitive names
481    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
482      if bulk formulae are used in long integration (especially EmPmR). Turn
483      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
484      if balancePrintMean, the imbalance that is substracted is printed to
485      STDOUT.
486    o fix bug (typo) in obcs_apply_eta.F
487    o add a new package shelfice which enables us to model the circulation
488      underneath shelf-ice with draughts of hundreds of meters.
489     - works
490     - to do: + include improved thermodynamics
491              + check whether kSurfC (from model/inc/SURFACE.h) can be used
492                instead of new field kTopC
493              + can we use topoFile, Ro_surf and existing code in ini_depth.F
494                instead of new field R_shelfIce and new code in ini_depth.F
495                and ini_mask_etc.F?
496              + adjust vertical mixing schemes?
497    o seaice pkg:
498     - add a cpp-flag to include a simple formula for a salinity dependent
499       freezing point of sea water at the surface
500     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
501       meridional stresses are now different (and hopefully correct)
502    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
503       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
504       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
505    o pkg/diagnostics: add options and parameters for regional-statistics
506       diagnostics ; define regions by reading a region-mask from a file
507       (might add other options later)
508    o pkg/bulk_force:
509     - add option and parameters to use AIM surface-flux formulae.
510     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
511       others forcing fields (defined in PARM05, parameter file "data") are loaded
512       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
513     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
514     - use the right EXCH call for uwind,vwind (to work on CS-grid).
515     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
516       and parameters (note: calcWindStress replaces .NOT.readwindstress).
517     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
518    
519    checkpoint58
520    o add "--embed-source" option to genmake2 which, when the supporting
521      tools can be compiled (as determined by genmake2) will turn on the
522      embed_files package which then embeds the entire MITgcm source code
523      (*.[fFhc] + Makefile) used for the build within the executable
524      - requested by CNH but off by default
525      - adds a paltry <9MB to the mitgcmuv executable in most cases
526      - only writes the output when useEMBEDSRC in eedata is true
527    o clean up 3-dim. relaxation codes:
528      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
529      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
530      * Thanks to Tom Haine for testing!
531    
532    checkpoint57z_post
533    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
534      affects output (@ truncation level) of exp. plume_on_slope ; updated.
535    o fix the pickup behavior for obcs in combination with ptracers
536    o fix a bug in ptracers_external_fields_load
537    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
538      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
539    o transfered surface NH pressure to eta field (if exactConserv).
540    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
541         and update lab_sea output.txt file.
542    o completing 3-dim. relaxation code: additional term
543         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
544      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
545      * At compile time, in "EXF_OPTIONS.h" set
546          #define  ALLOW_CLIMTEMP_RELAXATION
547          #define  ALLOW_CLIMSALT_RELAXATION
548      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
549          tauThetaClimRelax3Dim = 15552000.0,
550          tauSaltClimRelax3Dim  = 15552000.0,
551      * 3 cases:
552          1) Use a constant-in-time 3-dim. field
553          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
554          3) Real-time relax. to time-evolving prescribed field
555    o Adding Laplacian-type smoothness constraint on
556      initial and boundary (forcing) controls (ic, bc)
557      * enable at compile-time via
558        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
559      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
560      * Absolute scale somewhat unclear so far
561      * no area weighting was included since no other cost term does so far
562    
563    checkpoint57y_post
564    First step for a NLFS adjoint
565    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
566    o new init. routines for calc_r_star, calc_surf_dr
567    o still need to deal with ini_masks_etc
568    o testreport seemed happy
569    checkpoint57y_pre
570    
571    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
572    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
573    o add new offset feature to offline pkg (plus minor cleanup)
574    o cfc fixes for final year of integration
575    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
576      be in GCHEM_OPTIONS).
577    
578    checkpoint57x_post
579    o fix testreport Pb in multiple test experiment.
580    o cleanup our namelist syntax in verification:
581      - make it more F95 standards compliant (some work still needed)
582      - allows the vast majority of our tests to work with gfortran
583    o Non-Hydrostatic:
584     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
585     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
586    o Allow to apply AB on T,S rather than on AB(gT,gS):
587     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
588     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
589       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
590     - need a "clever" read_pickup to restart from the other AB formulation
591    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
592    o remove some unused variables (reduces number of compiler warnings)
593    o adjoint
594      * Disable useVariableViscosity for adjoint for time being
595        (there are a number of extensive recomputations)
596      * Initialize certain variables needed for adjoint
597    
598    checkpoint57w_post
599    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
600                 fix the singleCpuIO RS version of MDSWRITEFIELD
601       and add a WARNING if using globalFiles=T with multi-processors.
602    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
603      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
604    o tracer advection scheme:
605      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
606       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
607       was not very convenient).
608      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
609       (further tests needed for the implicit DST & Flux-Limiter schemes).
610    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
611      and sRef for convenience, handy, when you want to initialize
612      ptracers in a large domain with a constant non-zero value. Also,
613      untangle ptracers_init.F a little.
614    
615    checkpoint57v_post
616    o change dome exp. to use variable viscosity in side-drag terms.
617    o remove all the files from the cfc_offline test since they are now
618      incorporated into tutorial_cfc_offline which has been producing
619      identical results for a few days of testing
620    o add new parameter: sideDragFactor to enable half-slip-side BC
621      and change side-drag S/R to use viscosity from mom_calc_visc
622      (can switch back by setting sideDragFactor=0.); affects results at
623      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
624       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
625    o vorticity & strain are now computed without masking, to account for
626      no-slip-side BC in variable viscosity calculation ; mask is applied
627      anyway later on, before computing advection/coriolis terms.
628    o modify exp4 to test new obcs support for reading from external files
629      and for passive tracers
630    o fix behavior of ptracers_monitor when monitor output is written to a
631      netcdf-file; still not independent of monitor.F (writes in the same
632      file).
633    o change default value of tRef (put a uniform, meaningful value for ocean
634      & atmos) and initialize sRef (was missing, as Martin mentioned).
635    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
636      to be proportional to enstrophy dissipation length.  Thus,
637       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
638      This is now consistent with Smagorinsky and with the manual.
639    
640    checkpoint57u_post
641    o OBCS and PTRACERS: add open boundary support for passive tracers
642      - either use homogenous (pseudo) v.Neumann conditions or prescribe
643        OB-values from file; this is not different from the way theta and salinity
644        are treated
645      - however, Orlanski-radiation conditions are not supported, and the model
646        will stop if you use pTracers and Orlanski at the same time.
647      - beefed up the rountine obcs_external_fields_load: now only those open
648        boundary values are overwritten with values from files for which there
649        are really files, otherwise the OB-fields remain untouched. This makes
650        it possible to use different OBs at different ends of the domain (as
651        with EXF)
652    o reduce number of exch calls in shap_filt (s2).
653    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
654      truncation level) 4/5 MLAdjust test results (11&12 digits match).
655    
656    checkpoint57t_post
657    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
658    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
659      same truncation, independent of the face number: affects affects several
660      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
661    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
662      note that biharmonic viscosity + no-slip was not tested in any experiment.
663    o fix bug in non-linear free-surf side-drag ; generate new output for
664      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
665    o make mnc honor the writeBinaryPrec flag for most kinds of output
666    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
667    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
668      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
669    o add brackets in multi-terms sum to get same truncation, independent of
670      the face number (manage to get exactly same value of gU,gV at the cs-edge)
671      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
672    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
673      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
674      a maximum grid-scale Reynolds number.  Also, changes all length calculations
675      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
676      Suggested values of viscosity parameters found in mom_calc_visc.
677      Many new viscosity diagnostics available.
678    
679    checkpoint57s_post
680    o Add clearing-house for viscosity calculations, mom_calc_visc and
681      correct numerous bugs in LeithD and Smagorinsky discretizations.  
682      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
683      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
684      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
685      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
686      The Strain-Tension form is now called with useStrainTensonVisc=.true.
687      ViscAhStrain and viscAhTension are now retired.
688    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
689    o In response to JMC's bug report, genmake2 now ignores any soft-links
690      that it finds in the *current* directory when searching for files.
691      Soft-links found in any other source directories will still work as
692      they did before.
693    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
694      a C routine to unlimit the stack size
695    o mnc-ify pkg/aim snapshot vars
696    o mnc-ify pkg/land as requested by Daniel
697    o various changes to mnc including:
698      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
699      - output can now be grouped so that all files within a group
700          change the ITER portion of their names in lock-step together
701      - can now read ("global") PER-FACE (in addition to PER-TILE) files
702          and works with both EXCH1 and EXCH2 (but needs more testing)
703      - writing works for all verification test cases w/ g77 on Linux
704    
705    checkpoint57r_post
706    o make MNC variable initialization happen earlier
707    o add diagnostics for (almost) each term of the momentum Eq.
708    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
709    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
710    o remove MINIMAL_TAVE_OUTPUT option ;
711      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
712    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
713      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
714    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
715    o add time-dependent SST, SSS control
716    o cost terms in ecco/ modularized (new cost_generic.F)
717    o cost_averages routines are modularized (new cost_averagesgeneric.F)
718    o new infrastructure for seaice model vs. obs misfits in seaice/
719      * driver from the_main_loop.F is seaice_cost_driver.F
720      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
721      * gradient check in Exp. 6a of natl_box_adjoint/
722    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
723      (see README file)
724    
725    checkpoint57q_post
726    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
727    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
728      - bug was reported by Jean-Michel and Ian Fenty
729    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
730      update exp. cpl_aim+ocn output.
731    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
732      Needed for high-res. runs with large global files
733      to be able to limit tapelev size
734    o Changed some tests for adjoint:
735      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
736      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
737      * global_ocean.90x40x15/ back to default 3-level checkpointing
738    o Modifications to enable scripted COMMON to MODULE conversion
739      * verification/OpenAD/code/ has necessary scripts and description;
740      * converts, compiles and runs successfully;
741    
742    checkpoint57p_post
743    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
744    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
745      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
746    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
747    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
748      (was already the case for dissipation with mom_vecinv,
749       and also the case for grad.PhiHyd when staggered-timeStep)
750      This will allow to put dissipation out-off the AB time-stepping.
751     Unfortunately, affects truncation error. Update output of exp. that "fails"
752      (cg2d matching number) and leave the others for later: front_relax(10),
753      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
754      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
755    
756    checkpoint57o_post
757    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
758      (2) its ready to be documented during the 20050801 DocFest
759    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
760      for ideal_2D_oce and lab_sea on linux_ia32_g77
761    o set to #undef CTRL_SET_OLD_MAXCVARS_30
762      in global1x1_tot/code_seaice_adj to access indices 32, 33
763      (worth another tag)
764    
765    checkpoint57n_post
766    o adding precip control xx_precip 32
767    o adding swflux control xx_swflux 33
768    o Replacing 10 forcing penalty cost routines by 1 generic.
769    o Implementing partitioning in time-mean and variable adjustment
770      for atmos. state.
771    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
772  o in natl_box_adjoint:  o in natl_box_adjoint:
773    * updated: results_bulk/    * updated exp 1 to 10
774    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
775    o updated global1x1/*_seaice_adj/
776      to incorporate latest changes
777    o enable useSingleCpuIO for mdsio vector routines
778      (applies in particular to tapelev I/O)
779    o removed inefficient K-loop in all active_file*control*.F
780    
781  checkpoint57m_post  checkpoint57m_post
782  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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