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revision 1.525 by edhill, Sat Jul 30 00:58:40 2005 UTC revision 1.769 by dimitri, Wed Feb 7 17:38:11 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/exf: changes to properly interpolate/mask/scale initial fields
8    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
9      and portions thereof.  See read_cs.txt for description and examples.
10    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
11      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
12      following the great-circle arc between those 2 points.
13    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
14      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
15    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
16     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
17     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
18     - still needs work (not working with some options ; efficiency to improve)
19       and serious testing.
20     - use this scheme for temperature & salinity in 2 advection test exp.:
21       advect_xy & advect_xz, respectively.
22    
23    checkpoint58u_post
24    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
25    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
26    o testreport: add option "-skipdir" to skip some test.
27    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
28      momentum calculation.
29    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
30    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
31      remove checkpoint.F and the_correction_step.F (no longer used);
32      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
33    o add option (linFSConserveTr) to correct for tracer source/sink due to
34      Linear Free surface
35    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
36    o pkg/thsice: fix reading mnc-pickups
37    
38    checkpoint58t_post
39    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
40    o pkg/mdsio:
41     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
42       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
43       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
44     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
45     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
46       either MDS_READ_FIELD or MDS_WRITE_FIELD )
47     - new S/R (to replace MDSWRITEMETA), which allows to write more
48       informations (variable names, time ...) to meta files.
49     - modify rdmds.m to give back the meta file content.
50    o pkg/diagnostics: change vertical interpolation to be safer, and more
51       flexible (define p-levels to interpolate to in data.diagnostics);
52      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
53       diagnostic pointer.
54    o pkg/seaice: more cleaning up of seaice_growth, added many comments
55    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
56    o fix multi-category seaice:
57     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
58       SEAICE_MULTICATEGORY
59     - fix short wave heat flux
60    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
61       and allow to use EVP solver. Change forward lab_sea: test both EVP
62       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
63    o Initial check-in of lab_sea adjoint
64      (very similar to natl_box_adjoint/code_seaice)
65      * used C-grid and EVP solver
66      * used KPP, GM/Redi
67      * uses inAdExact=.TRUE.
68      * gradient checks fail for both ADM and TLM
69        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
70        f.d. gradients actually seem more problematic than ADM, TLM gradients;
71        issue is related to forward mismatch between g77 an ifort
72    o pkg/seaice: overhaul of thermodynamics
73     - growth.F and groatb.F are replaced by new routine seaice_growth.F
74     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
75     - move a few global fields out of SEAICE.h into seaice_growth.F and
76       make them 2D (FICE/QNETO/ ...)
77     - remove FO (it is the same as QNETO)
78     - introduce a few local fields to avoid modifying external fields such
79       as atemp, etc.
80    
81    checkpoint58s_post
82    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
83      changed exf_set_gen.F so that
84        genperiod=0 means input file is one time-constant field and
85        genperiod=-12 means input file contains 12 monthly means
86    o CG2D: use pre-computed solver main-diagonal (stored in common block);
87      this affects truncation error ; generate new output file for exp. which
88      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
89        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
90        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
91        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
92        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
93        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
94    o start implementation of deep-atmosphere and anelastic formulation
95    o verification: remove 2nd copy of input files and use script "prepare_run"
96      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
97    o mom_common/vecinv/fluxform: fix a few initialisation isssues
98    o profiles: fix for multithreaded case
99    
100    o diagnostics: rename few diags:
101      s/'PRESSURE'/'RCENTER '/g
102      s/'TICE    '/'oceFreez'/g
103      s/'TAUX    '/'oceTAUX '/g
104      s/'TAUY    '/'oceTAUY '/g
105      s/'SWFLUX  '/'oceQsw  '/g
106      s/DIFx/DFxE/g
107      s/DIFy/DFyE/g
108      and add few ocean-forcing diagnostics:
109      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
110    o modifications to pkg/seaice/growth.F and budget.F, which change results of
111      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
112      as actual snow thickness.  It now refers everywhere to effective snow
113      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
114    
115    checkpoint58r_post
116    o modifications to pkg/seaice/growth.F, which change results of
117      lab_sea experiment: fixes pertain to melting snow over open water, to
118      masking EVAP under sea ice, and to using the correct AREA variable for
119      computations of EVAP, PRECIP, HSNOW, and GHEFF
120    o add ability to read bathy, salt, and theta using MNC (off by def)
121    o add flooding algorithm and advection of HSNOW for pkg/seaice;
122      both are turned off by default and do no change any results
123    o seaice advection with pkg/thsice: a step toward the use of non-linear
124      advection scheme, but #ifdef or commented out for now (requires more EXCH).
125    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
126      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
127      in natl_box (affects results @ truncation level: update output.txt)
128    o multi-threading and IO:
129      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
130      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
131        (needed to work with SingleCpuIO): tested in all verif. exp.
132    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
133      affects the results (but none of the verification test uses this scheme).
134    o Adding some pkg/diagnostics capability to pkg/seaice
135      (will certainly be subject to changes)
136    o ctrl: adding new control variables:
137      lwflux, lwdown, evap, snowprecip, apressure, runoff
138    
139    checkpoint58q_post
140    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
141      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
142      high_res_cube configuration by 4% on Columbia.
143    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
144      add (in global_with_exf/code) a version of EXF_INTERP_READ without
145      dynamical allocation (seems to work in multi-threaded).
146    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
147      single CPU io) so that TAF does not have to see EESUPPORT.h
148    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
149    
150    checkpoint58p_post
151    o obcs: stop if obcs is used with useCDscheme = .true.
152    o shelfice:
153     - fix a sign error so that no slip at shelfice interface works
154     - remove stop for combination non-hydrostatic code and shelfice. That does
155       not mean, that the results are correct, but at least they are numerically
156       stable
157    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
158    o added adjoint exch routined for all exch*3d* routines
159      and updated flow directives
160    
161    checkpoint58o_post
162    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
163      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
164    o change controling S/R for writing pickup file (new S/R do_write_pickup)
165      and clean-up reading/writing of pickup files.
166    o fix local version of read/write pickup (NH part) in rotating_tank/code
167    o simplify EXCH interface:
168     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
169     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
170    o added the regrid package
171    o shelfice:
172     - add a simple boundary layer scheme to reduce noise
173     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
174    
175    checkpoint58n_post
176    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
177       local variable (not in common block).
178    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
179      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
180      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
181        to work with SingleCpuIO.
182    o add "_d 0" to real constant of pkg/cfc subroutines ;
183       update exp. cfc_exemple & tutorial_cfc_offline output files.
184    o multi-threading and IO:
185      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
186        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
187      - barrier before and after reading.
188      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
189      - avoid using MDS_WRITELOCAL for LAND pkg output.
190      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
191        common-block variables ; Allows multi-threading with master-thread IO.
192    o change default MAX_NO_THREADS from 32 to 4 ;
193      and stop cleanly when MAX_NO_THREADS is too small.
194    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
195    
196    checkpoint58m_post
197    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
198       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
199    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
200       keep global_ocean.90x40x15 (for AD testing) with former secondary test
201       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
202    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
203        add MITgcm_tutorials (= code + all the tutorials)
204    o ecco, option to compute cost for total ssh (mean+anom)
205    o consistent with addition of ptracer and ssh in pkg/profiles
206    o profiles: adding ptracer and ssh
207    o testreport: change multi-test output-file name
208      (from output.txt.{name} to output.{name}.txt)
209    o profiles: now ok for mutli-tiles case
210    o seaice: add 4 parameters for different advection schemes for area,
211      (effective) seaice thickness, enthalphy, and snow height. Their default
212      is the standard parameter SEAICEadvScheme
213    o calc_gw:
214     - add cosFacU in zonal viscous flux (harmonic.visc.).
215     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
216       of tutorial_plume_on_slope.
217    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
218    o calc_gw: true flux-form, account for horizontal grid spacing.
219      update rotating_tank results, but not plume_on_slope (affected at
220      truncation level, 11 digits).
221    
222    checkpoint58l_post
223    o calc_gw:
224     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
225     - remove side-drag for now (need to fix it); update plume_on_slope results.
226     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
227    o commit code to make SST/SSS weights spatially variable
228      (based on either variable in-situ or variable initial T/S weights)
229    o pkg/ecco:
230      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
231        now based on horizontally varying weights wthetaLev, wsaltLev
232      * cost_averagesflags now returns year indices in addition to day, month
233      * sflux balance is performed on annual basis
234        (sflxumm, sfluxmm2, bal_sfluxmm)
235      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
236        including separate counting and multipliers
237    o pkg/rbcs
238      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
239    
240    checkpoint58k_post
241    o testreport:
242     - always build in dir. "build" (if not there, mkdir build instead of building
243       & running in input)
244     - run in dir run (if it exists), in build otherwise.
245     - call prepare_run (if input/prepare_run exists)
246     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
247    o pkg/exf modifications to interpolation and rotation routines for more
248       reasonable treatment of North Pole singularity: for tracers North Pole
249       value is set to northernmost zonal-mean value, for zonal velocity it is
250       set to zero, and for meridional velocity it is set to northernmost value.
251    o pkg/exf/exf_check_range.F
252     - add tile index to diagnostics and move stop statement to the very
253       end of the routine.
254    o pkg/diagnostics: (diagnostics_main_init.F)
255      define title of isomorphic variables according to the current config.
256    o pkg/thsice with pkg/seaice dynamics:
257    - fix domain of computation (interior only, required for exf) and do exchanges
258    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
259    o towards a standard way of dealing with multi-threading in MONITOR
260      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
261    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
262       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
263    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
264    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
265    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
266       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
267    o tracer advection:
268     - clean-up and simplify calc_common_factors.F
269     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
270       advection subroutine (but still not used within DST advection S/R)
271    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
272    
273    checkpoint58j_post
274    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
275      from file (collects calls previously in FORWARD_STEP)
276    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
277    o adjoint store dir. adjusted accordingly
278    o genmake2
279      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
280    
281    checkpoint58i_post
282    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
283      on wind stress (SEAICEstressFactor defaults to 1.)
284    o Total number of Timers is finite (<=40): comment out 2 non-essential one
285      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
286    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
287      on CS-grid: no longer loosing mass.
288    o exf & curvilinear-grid: no longer modify longitude xC & xG.
289    o pkg/ggl90: fix sloppy output and fix a bug
290    o pkg/seaice: added SEAICEuseEVPpickup parameter
291      - Set to false in order to start EVP solver with
292        non-EVP pickup files when using SEAICEuseEVP
293      - fix sign error in diffusion in seaice_calc_rhs
294    
295    checkpoint58h_post
296    * Modifications for bottom topography control
297      o replace hFacC by _hFacC at various places
298      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
299      o add non-self-adjoint cg2d_nsa
300      o update autodiff support routines
301      o re-initialise hfac after ctrl_depth_ini
302      o works for 5x5 box, doesnt work for global_ocean.90x40x15
303    * Adding verification for 5x5 box (4-layer) bottom topography control
304    
305    checkpoint58g_post
306    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
307       used for mean seasonal cycle, mean diurnal cycle); add an example
308       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
309    o pkg/ggl90:
310      - add parameter (minimum surface kinetic energy)
311      - fix bug (avoiding division by zero)
312    o couple pkg/thsice to pkg/seaice:
313      - modify advection in seaice to accomodate new scalar fields to be advected
314      - only muliDimAdection scheme work with seaice/thsice
315      - mapping of thsice-variables to seaice-variables, back and forth
316      - does not break the verification experiments, but does not give the
317        desired results either
318    o pkg/seaice
319      - make (default) second order advection a bit less confusing?
320    
321    checkpoint58f_post
322    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
323      to pkg/seaice):
324      - new routines thsice_map_exf and thsice_get_exf provide the interface
325      - add an additional formal parameter to thsice_solve4temp
326    o pkg/exf:
327      - add new fields wspeed, snowprecip (to be able to couple to thsice)
328      - correct Stefan-Boltzmann constant
329      - new parameter for longwave surface emittance
330      - separate some stuff from exf_bulkformulae into new routines  
331        exf_radiation, exf_wind
332      - add new parameters and constants: longwave emissivity for ocean, ice
333        and snow, evaporation parameters over ice
334      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
335        either wind from stress or stress from wind
336    o pkg/thSIce:
337    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
338    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
339       and THSICE_CALC_THICKN
340    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
341    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
342      to make debugging easier.
343    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
344    o pkg/bulk_force:
345      - clean-up comments and parameters ;
346      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
347    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
348      generate new output for test-experiment: aim.5l_cs.thSI
349    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
350      testreport accordingly
351    
352    checkpoint58e_post
353    o SEAICE_CGRID adjoint done
354    o R_STAR adjoint implemented.
355      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
356      * need to sort out init. of h0facc, etc.
357    o Make pkg/profile fully independent of ecco,cost, etc. stuff
358      to be able to use it in pure forward.
359    
360    checkpoint58d_post
361    o upgrade simple test-experiment to tutorial example:
362     step.1: duplicate the experiment and (step.2) will remove the old copy.
363      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
364      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
365      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
366      tutorial_global_oce_biogeo    <- copy of dic_example
367      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
368      tutorial_plume_on_slope       <- copy of plume_on_slope
369      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
370      tutorial_global_oce_optim     <- empty for now (David ?)
371      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
372     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
373    o correct a sign problem in cost_scat.F
374    o obcs and ptracers: fix boundary conditions for advections schemes
375      with larger stencil
376    o thsice adjoint: start
377    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
378      completeness
379    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
380      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
381    o ptracers adjoint:
382      * avoid extensive recomputatations
383      * fix missing re-init. of gptr (missed by TAF)
384    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
385      me to turn off the excessive output to STDOUT that this package produces
386    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
387      and add those terms in Vector-Invariant formulation.
388    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
389      if the control period (xx_hfluxperiod etc) is 0
390    o in profiles pkg, clean routines and fix details
391    o in ecco pkg, reading ssh data:
392      fix problem in case the model does not start at iter0=0
393    o fix mnc-pickup/restart for ptracers
394    o new package prifiles:
395      code to compute profile-based cost by Gael Forget
396      (modifs in ecco, ctrl, autodiff)
397    o Benign bug fix in initialization (spotted by M. Mazloff) of
398      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
399    
400    checkpoint58c_post
401    o adjoint: finish NLFS adjoint and provide reference output in
402      verification/global_ocean.90x40x15/results_ad_nlfs
403    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
404      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
405      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
406      with SEAICE_CGRID defined.
407    o move calendarDumps from "data" to "data.cal" and clean-up the code
408      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
409    o add useEXF & useCAL flags (for now, set in hard-coded way)
410    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
411      (were missing in NH mode, and wrong in quasihydrostatic mode).
412      waiting for Chris updated version of calc_gw to add those CALLs.
413    o fix bug in quasihydrostatic S/R ;
414      add a test for this option: global_ocean.90x40x15.qshyd
415    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
416      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
417    o add on/off flag useOffLine for package OFFLINE
418    o seaice:
419      - modify advection so that it works also on the C-grid
420      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
421        problem in multi-tile runs with C-grid
422      - add flags for clipping ice velocities and/or masking solver forcing
423      - fix drag (ocean on ice) formulation and a bug that caused noise in the
424        C-grid solver
425      - added a few comments to seaice_diffusion.F
426      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
427        are now exclusive)
428      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
429        required re-ordering the code a little:
430       + make DAIRN global variable (defined in SEAICE)
431       + move computation of the viscosities eta and zeta into a new separate
432         routine (because I need to recompute them in seaice_ocean_stress.F)
433    
434    checkpoint58b_post
435    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
436      update output.txt of exp. aim.5l_cs.thSI
437    o various mnc cleanups and improvements:
438      + shrink lookup tables by factor of ~4
439      + better error reporting when running out of lookup space
440      + able to handle longer path/file names (up to 500 chars)
441    o adjoint:
442      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
443      - TBD: "hidden" mom_vecinv recomp. in dynamics
444    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
445     (allow to differentiate between forcing components using new integer flags:
446      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
447     and add new flag to put Dissipation tendency out of Adams-Bashforth.
448    o ecco
449      - enable trend removal from SSH anomaly obs.
450    o adjoint
451      - a fix for PmEpR when #undef EXACT_CONSERV
452      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
453      - try to fix "hidden" recomp. in forward_step for NLFS
454        (NLFS seems broken sometimes after I checked it in)
455    o seaice:
456     - add c-grid version of the dynamic solver:
457       + three new routines that are the c-grid substitute lsr, dynsolver
458         and ostres
459       + put a few fields that were local to dynsolver into global common
460         blocks, so that I can move the computation of stresses etc into
461         seaice_lsr (saves coding but may break the adjoint).
462     - replace more hardwired parameters by runtime parameters
463     - add ice masks that mask the rhs of the implicit solvers where there
464       is no ice (commented out in seaice_dynsolver, because i am not sure
465       if this works properly), eventually this should replace the clipping
466       of ice velocities in seaice_dynsolver to +/-40cm/s.
467    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
468      include it only where its needed
469    o move balancing of fluxes before the call of external_forcing_surf
470    o seaice:
471      - correct units of turning angles (now they are really in degrees)
472      - move computation of GWATX/Y out of main routine into dynsolver
473      - initialize GWATX/Y in seaice_init
474    o Apply mask on Fresh-Water flux (needed for SSH forcing).
475      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
476    o seaice: add runtime flags for turning angles (default to zero)
477    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
478      and trend from exf forcing and ctrl control adjustments
479    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
480      (since checkpoint57x_post)
481    o change the default rotation period to 86164.s = the Earth rotation
482    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
483      and based on a reference stratification. Tested within hs94.cs-32x32x5.
484    o seaice advection: add code for choosing between the default (2nd order
485      central differences) and multiDim advection schemes provided by
486      pkg/generic_advdiff
487    o seaice:
488      - removed all references to SEAICE_GRID.h fields from
489        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
490        (cubed-sphere configuration will change a little)
491      - grid computations in seaice_init are obsolete now.
492      - cleaned up code a little so that is easier to read (hopefully).
493      - added new (better?) discretizations of default advection and diffusion
494        (turn on with SEAICEuseFluxForm)
495      - replace 1 in 3d global fields by kSurface in growth.F
496      
497    checkpoint58a_post
498    o seaice:
499      - bug fix in advect.F
500    o shelfice:
501      - separate shelfice load anomaly from pload (breaks with time
502        dependent forcing), => introduce constant field shelficeLoadAnomaly.
503        Its default is 0., but it may be computed more cleverly from (unknown)
504        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
505        done offline. A good approximation of the pressure load anomaly is
506        necessary to avoid large initial adjustment processes underneath
507        deep-reaching shelfice.
508      - small fix in ISOMIP shelfice_thermodynamics
509      - add more sophisticated thermodynamics of Hellmer (1989), this is
510        now the default
511      - give a few constants more intuitive names
512    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
513      if bulk formulae are used in long integration (especially EmPmR). Turn
514      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
515      if balancePrintMean, the imbalance that is substracted is printed to
516      STDOUT.
517    o fix bug (typo) in obcs_apply_eta.F
518    o add a new package shelfice which enables us to model the circulation
519      underneath shelf-ice with draughts of hundreds of meters.
520     - works
521     - to do: + include improved thermodynamics
522              + check whether kSurfC (from model/inc/SURFACE.h) can be used
523                instead of new field kTopC
524              + can we use topoFile, Ro_surf and existing code in ini_depth.F
525                instead of new field R_shelfIce and new code in ini_depth.F
526                and ini_mask_etc.F?
527              + adjust vertical mixing schemes?
528    o seaice pkg:
529     - add a cpp-flag to include a simple formula for a salinity dependent
530       freezing point of sea water at the surface
531     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
532       meridional stresses are now different (and hopefully correct)
533    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
534       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
535       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
536    o pkg/diagnostics: add options and parameters for regional-statistics
537       diagnostics ; define regions by reading a region-mask from a file
538       (might add other options later)
539    o pkg/bulk_force:
540     - add option and parameters to use AIM surface-flux formulae.
541     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
542       others forcing fields (defined in PARM05, parameter file "data") are loaded
543       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
544     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
545     - use the right EXCH call for uwind,vwind (to work on CS-grid).
546     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
547       and parameters (note: calcWindStress replaces .NOT.readwindstress).
548     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
549    
550    checkpoint58
551    o add "--embed-source" option to genmake2 which, when the supporting
552      tools can be compiled (as determined by genmake2) will turn on the
553      embed_files package which then embeds the entire MITgcm source code
554      (*.[fFhc] + Makefile) used for the build within the executable
555      - requested by CNH but off by default
556      - adds a paltry <9MB to the mitgcmuv executable in most cases
557      - only writes the output when useEMBEDSRC in eedata is true
558    o clean up 3-dim. relaxation codes:
559      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
560      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
561      * Thanks to Tom Haine for testing!
562    
563    checkpoint57z_post
564    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
565      affects output (@ truncation level) of exp. plume_on_slope ; updated.
566    o fix the pickup behavior for obcs in combination with ptracers
567    o fix a bug in ptracers_external_fields_load
568    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
569      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
570    o transfered surface NH pressure to eta field (if exactConserv).
571    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
572         and update lab_sea output.txt file.
573    o completing 3-dim. relaxation code: additional term
574         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
575      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
576      * At compile time, in "EXF_OPTIONS.h" set
577          #define  ALLOW_CLIMTEMP_RELAXATION
578          #define  ALLOW_CLIMSALT_RELAXATION
579      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
580          tauThetaClimRelax3Dim = 15552000.0,
581          tauSaltClimRelax3Dim  = 15552000.0,
582      * 3 cases:
583          1) Use a constant-in-time 3-dim. field
584          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
585          3) Real-time relax. to time-evolving prescribed field
586    o Adding Laplacian-type smoothness constraint on
587      initial and boundary (forcing) controls (ic, bc)
588      * enable at compile-time via
589        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
590      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
591      * Absolute scale somewhat unclear so far
592      * no area weighting was included since no other cost term does so far
593    
594    checkpoint57y_post
595    First step for a NLFS adjoint
596    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
597    o new init. routines for calc_r_star, calc_surf_dr
598    o still need to deal with ini_masks_etc
599    o testreport seemed happy
600    checkpoint57y_pre
601    
602    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
603    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
604    o add new offset feature to offline pkg (plus minor cleanup)
605    o cfc fixes for final year of integration
606    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
607      be in GCHEM_OPTIONS).
608    
609    checkpoint57x_post
610    o fix testreport Pb in multiple test experiment.
611    o cleanup our namelist syntax in verification:
612      - make it more F95 standards compliant (some work still needed)
613      - allows the vast majority of our tests to work with gfortran
614    o Non-Hydrostatic:
615     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
616     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
617    o Allow to apply AB on T,S rather than on AB(gT,gS):
618     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
619     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
620       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
621     - need a "clever" read_pickup to restart from the other AB formulation
622    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
623    o remove some unused variables (reduces number of compiler warnings)
624    o adjoint
625      * Disable useVariableViscosity for adjoint for time being
626        (there are a number of extensive recomputations)
627      * Initialize certain variables needed for adjoint
628    
629    checkpoint57w_post
630    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
631                 fix the singleCpuIO RS version of MDSWRITEFIELD
632       and add a WARNING if using globalFiles=T with multi-processors.
633    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
634      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
635    o tracer advection scheme:
636      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
637       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
638       was not very convenient).
639      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
640       (further tests needed for the implicit DST & Flux-Limiter schemes).
641    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
642      and sRef for convenience, handy, when you want to initialize
643      ptracers in a large domain with a constant non-zero value. Also,
644      untangle ptracers_init.F a little.
645    
646    checkpoint57v_post
647    o change dome exp. to use variable viscosity in side-drag terms.
648    o remove all the files from the cfc_offline test since they are now
649      incorporated into tutorial_cfc_offline which has been producing
650      identical results for a few days of testing
651    o add new parameter: sideDragFactor to enable half-slip-side BC
652      and change side-drag S/R to use viscosity from mom_calc_visc
653      (can switch back by setting sideDragFactor=0.); affects results at
654      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
655       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
656    o vorticity & strain are now computed without masking, to account for
657      no-slip-side BC in variable viscosity calculation ; mask is applied
658      anyway later on, before computing advection/coriolis terms.
659    o modify exp4 to test new obcs support for reading from external files
660      and for passive tracers
661    o fix behavior of ptracers_monitor when monitor output is written to a
662      netcdf-file; still not independent of monitor.F (writes in the same
663      file).
664    o change default value of tRef (put a uniform, meaningful value for ocean
665      & atmos) and initialize sRef (was missing, as Martin mentioned).
666    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
667      to be proportional to enstrophy dissipation length.  Thus,
668       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
669      This is now consistent with Smagorinsky and with the manual.
670    
671    checkpoint57u_post
672    o OBCS and PTRACERS: add open boundary support for passive tracers
673      - either use homogenous (pseudo) v.Neumann conditions or prescribe
674        OB-values from file; this is not different from the way theta and salinity
675        are treated
676      - however, Orlanski-radiation conditions are not supported, and the model
677        will stop if you use pTracers and Orlanski at the same time.
678      - beefed up the rountine obcs_external_fields_load: now only those open
679        boundary values are overwritten with values from files for which there
680        are really files, otherwise the OB-fields remain untouched. This makes
681        it possible to use different OBs at different ends of the domain (as
682        with EXF)
683    o reduce number of exch calls in shap_filt (s2).
684    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
685      truncation level) 4/5 MLAdjust test results (11&12 digits match).
686    
687    checkpoint57t_post
688    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
689    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
690      same truncation, independent of the face number: affects affects several
691      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
692    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
693      note that biharmonic viscosity + no-slip was not tested in any experiment.
694    o fix bug in non-linear free-surf side-drag ; generate new output for
695      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
696    o make mnc honor the writeBinaryPrec flag for most kinds of output
697    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
698    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
699      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
700    o add brackets in multi-terms sum to get same truncation, independent of
701      the face number (manage to get exactly same value of gU,gV at the cs-edge)
702      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
703    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
704      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
705      a maximum grid-scale Reynolds number.  Also, changes all length calculations
706      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
707      Suggested values of viscosity parameters found in mom_calc_visc.
708      Many new viscosity diagnostics available.
709    
710    checkpoint57s_post
711    o Add clearing-house for viscosity calculations, mom_calc_visc and
712      correct numerous bugs in LeithD and Smagorinsky discretizations.  
713      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
714      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
715      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
716      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
717      The Strain-Tension form is now called with useStrainTensonVisc=.true.
718      ViscAhStrain and viscAhTension are now retired.
719    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
720    o In response to JMC's bug report, genmake2 now ignores any soft-links
721      that it finds in the *current* directory when searching for files.
722      Soft-links found in any other source directories will still work as
723      they did before.
724    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
725      a C routine to unlimit the stack size
726    o mnc-ify pkg/aim snapshot vars
727    o mnc-ify pkg/land as requested by Daniel
728    o various changes to mnc including:
729      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
730      - output can now be grouped so that all files within a group
731          change the ITER portion of their names in lock-step together
732      - can now read ("global") PER-FACE (in addition to PER-TILE) files
733          and works with both EXCH1 and EXCH2 (but needs more testing)
734      - writing works for all verification test cases w/ g77 on Linux
735    
736    checkpoint57r_post
737    o make MNC variable initialization happen earlier
738    o add diagnostics for (almost) each term of the momentum Eq.
739    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
740    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
741    o remove MINIMAL_TAVE_OUTPUT option ;
742      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
743    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
744      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
745    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
746    o add time-dependent SST, SSS control
747    o cost terms in ecco/ modularized (new cost_generic.F)
748    o cost_averages routines are modularized (new cost_averagesgeneric.F)
749    o new infrastructure for seaice model vs. obs misfits in seaice/
750      * driver from the_main_loop.F is seaice_cost_driver.F
751      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
752      * gradient check in Exp. 6a of natl_box_adjoint/
753    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
754      (see README file)
755    
756    checkpoint57q_post
757    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
758    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
759      - bug was reported by Jean-Michel and Ian Fenty
760    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
761      update exp. cpl_aim+ocn output.
762    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
763      Needed for high-res. runs with large global files
764      to be able to limit tapelev size
765    o Changed some tests for adjoint:
766      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
767      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
768      * global_ocean.90x40x15/ back to default 3-level checkpointing
769    o Modifications to enable scripted COMMON to MODULE conversion
770      * verification/OpenAD/code/ has necessary scripts and description;
771      * converts, compiles and runs successfully;
772    
773    checkpoint57p_post
774    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
775    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
776      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
777    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
778    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
779      (was already the case for dissipation with mom_vecinv,
780       and also the case for grad.PhiHyd when staggered-timeStep)
781      This will allow to put dissipation out-off the AB time-stepping.
782     Unfortunately, affects truncation error. Update output of exp. that "fails"
783      (cg2d matching number) and leave the others for later: front_relax(10),
784      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
785      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
786    
787    checkpoint57o_post
788  o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and  o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
789    (2) its ready to be documented during the 20050801 DocFest    (2) its ready to be documented during the 20050801 DocFest
790  o MNC-ify the gmredi package -- tested and works w/ and w/o mnc  o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
791    for ideal_2D_oce and lab_sea on linux_ia32_g77    for ideal_2D_oce and lab_sea on linux_ia32_g77
792    o set to #undef CTRL_SET_OLD_MAXCVARS_30
793      in global1x1_tot/code_seaice_adj to access indices 32, 33
794      (worth another tag)
795    
796  checkpoint57n_post  checkpoint57n_post
797  o adding precip control xx_precip 32  o adding precip control xx_precip 32

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