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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.767 by jmc, Tue Feb 6 22:19:51 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 adding precip control xx_precip  o utils/matlab/cs_grid/bk_line: to compute transport through passages,
8  o moved ptracer ctrl index 17 -> 32    add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
9      following the great-circle arc between those 2 points.
10    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
11      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
12    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
13     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
14     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
15     - still needs work (not working with some options ; efficiency to improve)
16       and serious testing.
17     - use this scheme for temperature & salinity in 2 advection test exp.:
18       advect_xy & advect_xz, respectively.
19    
20    checkpoint58u_post
21    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
22    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
23    o testreport: add option "-skipdir" to skip some test.
24    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
25      momentum calculation.
26    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
27    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
28      remove checkpoint.F and the_correction_step.F (no longer used);
29      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
30    o add option (linFSConserveTr) to correct for tracer source/sink due to
31      Linear Free surface
32    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
33    o pkg/thsice: fix reading mnc-pickups
34    
35    checkpoint58t_post
36    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
37    o pkg/mdsio:
38     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
39       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
40       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
41     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
42     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
43       either MDS_READ_FIELD or MDS_WRITE_FIELD )
44     - new S/R (to replace MDSWRITEMETA), which allows to write more
45       informations (variable names, time ...) to meta files.
46     - modify rdmds.m to give back the meta file content.
47    o pkg/diagnostics: change vertical interpolation to be safer, and more
48       flexible (define p-levels to interpolate to in data.diagnostics);
49      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
50       diagnostic pointer.
51    o pkg/seaice: more cleaning up of seaice_growth, added many comments
52    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
53    o fix multi-category seaice:
54     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
55       SEAICE_MULTICATEGORY
56     - fix short wave heat flux
57    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
58       and allow to use EVP solver. Change forward lab_sea: test both EVP
59       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
60    o Initial check-in of lab_sea adjoint
61      (very similar to natl_box_adjoint/code_seaice)
62      * used C-grid and EVP solver
63      * used KPP, GM/Redi
64      * uses inAdExact=.TRUE.
65      * gradient checks fail for both ADM and TLM
66        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
67        f.d. gradients actually seem more problematic than ADM, TLM gradients;
68        issue is related to forward mismatch between g77 an ifort
69    o pkg/seaice: overhaul of thermodynamics
70     - growth.F and groatb.F are replaced by new routine seaice_growth.F
71     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
72     - move a few global fields out of SEAICE.h into seaice_growth.F and
73       make them 2D (FICE/QNETO/ ...)
74     - remove FO (it is the same as QNETO)
75     - introduce a few local fields to avoid modifying external fields such
76       as atemp, etc.
77    
78    checkpoint58s_post
79    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
80      changed exf_set_gen.F so that
81        genperiod=0 means input file is one time-constant field and
82        genperiod=-12 means input file contains 12 monthly means
83    o CG2D: use pre-computed solver main-diagonal (stored in common block);
84      this affects truncation error ; generate new output file for exp. which
85      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
86        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
87        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
88        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
89        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
90        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
91    o start implementation of deep-atmosphere and anelastic formulation
92    o verification: remove 2nd copy of input files and use script "prepare_run"
93      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
94    o mom_common/vecinv/fluxform: fix a few initialisation isssues
95    o profiles: fix for multithreaded case
96    
97    o diagnostics: rename few diags:
98      s/'PRESSURE'/'RCENTER '/g
99      s/'TICE    '/'oceFreez'/g
100      s/'TAUX    '/'oceTAUX '/g
101      s/'TAUY    '/'oceTAUY '/g
102      s/'SWFLUX  '/'oceQsw  '/g
103      s/DIFx/DFxE/g
104      s/DIFy/DFyE/g
105      and add few ocean-forcing diagnostics:
106      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
107    o modifications to pkg/seaice/growth.F and budget.F, which change results of
108      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
109      as actual snow thickness.  It now refers everywhere to effective snow
110      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
111    
112    checkpoint58r_post
113    o modifications to pkg/seaice/growth.F, which change results of
114      lab_sea experiment: fixes pertain to melting snow over open water, to
115      masking EVAP under sea ice, and to using the correct AREA variable for
116      computations of EVAP, PRECIP, HSNOW, and GHEFF
117    o add ability to read bathy, salt, and theta using MNC (off by def)
118    o add flooding algorithm and advection of HSNOW for pkg/seaice;
119      both are turned off by default and do no change any results
120    o seaice advection with pkg/thsice: a step toward the use of non-linear
121      advection scheme, but #ifdef or commented out for now (requires more EXCH).
122    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
123      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
124      in natl_box (affects results @ truncation level: update output.txt)
125    o multi-threading and IO:
126      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
127      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
128        (needed to work with SingleCpuIO): tested in all verif. exp.
129    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
130      affects the results (but none of the verification test uses this scheme).
131    o Adding some pkg/diagnostics capability to pkg/seaice
132      (will certainly be subject to changes)
133    o ctrl: adding new control variables:
134      lwflux, lwdown, evap, snowprecip, apressure, runoff
135    
136    checkpoint58q_post
137    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
138      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
139      high_res_cube configuration by 4% on Columbia.
140    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
141      add (in global_with_exf/code) a version of EXF_INTERP_READ without
142      dynamical allocation (seems to work in multi-threaded).
143    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
144      single CPU io) so that TAF does not have to see EESUPPORT.h
145    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
146    
147    checkpoint58p_post
148    o obcs: stop if obcs is used with useCDscheme = .true.
149    o shelfice:
150     - fix a sign error so that no slip at shelfice interface works
151     - remove stop for combination non-hydrostatic code and shelfice. That does
152       not mean, that the results are correct, but at least they are numerically
153       stable
154    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
155    o added adjoint exch routined for all exch*3d* routines
156      and updated flow directives
157    
158    checkpoint58o_post
159    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
160      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
161    o change controling S/R for writing pickup file (new S/R do_write_pickup)
162      and clean-up reading/writing of pickup files.
163    o fix local version of read/write pickup (NH part) in rotating_tank/code
164    o simplify EXCH interface:
165     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
166     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
167    o added the regrid package
168    o shelfice:
169     - add a simple boundary layer scheme to reduce noise
170     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
171    
172    checkpoint58n_post
173    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
174       local variable (not in common block).
175    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
176      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
177      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
178        to work with SingleCpuIO.
179    o add "_d 0" to real constant of pkg/cfc subroutines ;
180       update exp. cfc_exemple & tutorial_cfc_offline output files.
181    o multi-threading and IO:
182      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
183        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
184      - barrier before and after reading.
185      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
186      - avoid using MDS_WRITELOCAL for LAND pkg output.
187      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
188        common-block variables ; Allows multi-threading with master-thread IO.
189    o change default MAX_NO_THREADS from 32 to 4 ;
190      and stop cleanly when MAX_NO_THREADS is too small.
191    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
192    
193    checkpoint58m_post
194    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
195       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
196    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
197       keep global_ocean.90x40x15 (for AD testing) with former secondary test
198       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
199    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
200        add MITgcm_tutorials (= code + all the tutorials)
201    o ecco, option to compute cost for total ssh (mean+anom)
202    o consistent with addition of ptracer and ssh in pkg/profiles
203    o profiles: adding ptracer and ssh
204    o testreport: change multi-test output-file name
205      (from output.txt.{name} to output.{name}.txt)
206    o profiles: now ok for mutli-tiles case
207    o seaice: add 4 parameters for different advection schemes for area,
208      (effective) seaice thickness, enthalphy, and snow height. Their default
209      is the standard parameter SEAICEadvScheme
210    o calc_gw:
211     - add cosFacU in zonal viscous flux (harmonic.visc.).
212     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
213       of tutorial_plume_on_slope.
214    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
215    o calc_gw: true flux-form, account for horizontal grid spacing.
216      update rotating_tank results, but not plume_on_slope (affected at
217      truncation level, 11 digits).
218    
219    checkpoint58l_post
220    o calc_gw:
221     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
222     - remove side-drag for now (need to fix it); update plume_on_slope results.
223     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
224    o commit code to make SST/SSS weights spatially variable
225      (based on either variable in-situ or variable initial T/S weights)
226    o pkg/ecco:
227      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
228        now based on horizontally varying weights wthetaLev, wsaltLev
229      * cost_averagesflags now returns year indices in addition to day, month
230      * sflux balance is performed on annual basis
231        (sflxumm, sfluxmm2, bal_sfluxmm)
232      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
233        including separate counting and multipliers
234    o pkg/rbcs
235      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
236    
237    checkpoint58k_post
238    o testreport:
239     - always build in dir. "build" (if not there, mkdir build instead of building
240       & running in input)
241     - run in dir run (if it exists), in build otherwise.
242     - call prepare_run (if input/prepare_run exists)
243     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
244    o pkg/exf modifications to interpolation and rotation routines for more
245       reasonable treatment of North Pole singularity: for tracers North Pole
246       value is set to northernmost zonal-mean value, for zonal velocity it is
247       set to zero, and for meridional velocity it is set to northernmost value.
248    o pkg/exf/exf_check_range.F
249     - add tile index to diagnostics and move stop statement to the very
250       end of the routine.
251    o pkg/diagnostics: (diagnostics_main_init.F)
252      define title of isomorphic variables according to the current config.
253    o pkg/thsice with pkg/seaice dynamics:
254    - fix domain of computation (interior only, required for exf) and do exchanges
255    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
256    o towards a standard way of dealing with multi-threading in MONITOR
257      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
258    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
259       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
260    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
261    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
262    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
263       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
264    o tracer advection:
265     - clean-up and simplify calc_common_factors.F
266     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
267       advection subroutine (but still not used within DST advection S/R)
268    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
269    
270    checkpoint58j_post
271    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
272      from file (collects calls previously in FORWARD_STEP)
273    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
274    o adjoint store dir. adjusted accordingly
275    o genmake2
276      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
277    
278    checkpoint58i_post
279    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
280      on wind stress (SEAICEstressFactor defaults to 1.)
281    o Total number of Timers is finite (<=40): comment out 2 non-essential one
282      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
283    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
284      on CS-grid: no longer loosing mass.
285    o exf & curvilinear-grid: no longer modify longitude xC & xG.
286    o pkg/ggl90: fix sloppy output and fix a bug
287    o pkg/seaice: added SEAICEuseEVPpickup parameter
288      - Set to false in order to start EVP solver with
289        non-EVP pickup files when using SEAICEuseEVP
290      - fix sign error in diffusion in seaice_calc_rhs
291    
292    checkpoint58h_post
293    * Modifications for bottom topography control
294      o replace hFacC by _hFacC at various places
295      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
296      o add non-self-adjoint cg2d_nsa
297      o update autodiff support routines
298      o re-initialise hfac after ctrl_depth_ini
299      o works for 5x5 box, doesnt work for global_ocean.90x40x15
300    * Adding verification for 5x5 box (4-layer) bottom topography control
301    
302    checkpoint58g_post
303    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
304       used for mean seasonal cycle, mean diurnal cycle); add an example
305       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
306    o pkg/ggl90:
307      - add parameter (minimum surface kinetic energy)
308      - fix bug (avoiding division by zero)
309    o couple pkg/thsice to pkg/seaice:
310      - modify advection in seaice to accomodate new scalar fields to be advected
311      - only muliDimAdection scheme work with seaice/thsice
312      - mapping of thsice-variables to seaice-variables, back and forth
313      - does not break the verification experiments, but does not give the
314        desired results either
315    o pkg/seaice
316      - make (default) second order advection a bit less confusing?
317    
318    checkpoint58f_post
319    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
320      to pkg/seaice):
321      - new routines thsice_map_exf and thsice_get_exf provide the interface
322      - add an additional formal parameter to thsice_solve4temp
323    o pkg/exf:
324      - add new fields wspeed, snowprecip (to be able to couple to thsice)
325      - correct Stefan-Boltzmann constant
326      - new parameter for longwave surface emittance
327      - separate some stuff from exf_bulkformulae into new routines  
328        exf_radiation, exf_wind
329      - add new parameters and constants: longwave emissivity for ocean, ice
330        and snow, evaporation parameters over ice
331      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
332        either wind from stress or stress from wind
333    o pkg/thSIce:
334    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
335    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
336       and THSICE_CALC_THICKN
337    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
338    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
339      to make debugging easier.
340    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
341    o pkg/bulk_force:
342      - clean-up comments and parameters ;
343      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
344    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
345      generate new output for test-experiment: aim.5l_cs.thSI
346    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
347      testreport accordingly
348    
349    checkpoint58e_post
350    o SEAICE_CGRID adjoint done
351    o R_STAR adjoint implemented.
352      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
353      * need to sort out init. of h0facc, etc.
354    o Make pkg/profile fully independent of ecco,cost, etc. stuff
355      to be able to use it in pure forward.
356    
357    checkpoint58d_post
358    o upgrade simple test-experiment to tutorial example:
359     step.1: duplicate the experiment and (step.2) will remove the old copy.
360      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
361      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
362      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
363      tutorial_global_oce_biogeo    <- copy of dic_example
364      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
365      tutorial_plume_on_slope       <- copy of plume_on_slope
366      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
367      tutorial_global_oce_optim     <- empty for now (David ?)
368      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
369     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
370    o correct a sign problem in cost_scat.F
371    o obcs and ptracers: fix boundary conditions for advections schemes
372      with larger stencil
373    o thsice adjoint: start
374    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
375      completeness
376    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
377      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
378    o ptracers adjoint:
379      * avoid extensive recomputatations
380      * fix missing re-init. of gptr (missed by TAF)
381    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
382      me to turn off the excessive output to STDOUT that this package produces
383    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
384      and add those terms in Vector-Invariant formulation.
385    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
386      if the control period (xx_hfluxperiod etc) is 0
387    o in profiles pkg, clean routines and fix details
388    o in ecco pkg, reading ssh data:
389      fix problem in case the model does not start at iter0=0
390    o fix mnc-pickup/restart for ptracers
391    o new package prifiles:
392      code to compute profile-based cost by Gael Forget
393      (modifs in ecco, ctrl, autodiff)
394    o Benign bug fix in initialization (spotted by M. Mazloff) of
395      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
396    
397    checkpoint58c_post
398    o adjoint: finish NLFS adjoint and provide reference output in
399      verification/global_ocean.90x40x15/results_ad_nlfs
400    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
401      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
402      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
403      with SEAICE_CGRID defined.
404    o move calendarDumps from "data" to "data.cal" and clean-up the code
405      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
406    o add useEXF & useCAL flags (for now, set in hard-coded way)
407    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
408      (were missing in NH mode, and wrong in quasihydrostatic mode).
409      waiting for Chris updated version of calc_gw to add those CALLs.
410    o fix bug in quasihydrostatic S/R ;
411      add a test for this option: global_ocean.90x40x15.qshyd
412    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
413      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
414    o add on/off flag useOffLine for package OFFLINE
415    o seaice:
416      - modify advection so that it works also on the C-grid
417      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
418        problem in multi-tile runs with C-grid
419      - add flags for clipping ice velocities and/or masking solver forcing
420      - fix drag (ocean on ice) formulation and a bug that caused noise in the
421        C-grid solver
422      - added a few comments to seaice_diffusion.F
423      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
424        are now exclusive)
425      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
426        required re-ordering the code a little:
427       + make DAIRN global variable (defined in SEAICE)
428       + move computation of the viscosities eta and zeta into a new separate
429         routine (because I need to recompute them in seaice_ocean_stress.F)
430    
431    checkpoint58b_post
432    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
433      update output.txt of exp. aim.5l_cs.thSI
434    o various mnc cleanups and improvements:
435      + shrink lookup tables by factor of ~4
436      + better error reporting when running out of lookup space
437      + able to handle longer path/file names (up to 500 chars)
438    o adjoint:
439      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
440      - TBD: "hidden" mom_vecinv recomp. in dynamics
441    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
442     (allow to differentiate between forcing components using new integer flags:
443      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
444     and add new flag to put Dissipation tendency out of Adams-Bashforth.
445    o ecco
446      - enable trend removal from SSH anomaly obs.
447    o adjoint
448      - a fix for PmEpR when #undef EXACT_CONSERV
449      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
450      - try to fix "hidden" recomp. in forward_step for NLFS
451        (NLFS seems broken sometimes after I checked it in)
452    o seaice:
453     - add c-grid version of the dynamic solver:
454       + three new routines that are the c-grid substitute lsr, dynsolver
455         and ostres
456       + put a few fields that were local to dynsolver into global common
457         blocks, so that I can move the computation of stresses etc into
458         seaice_lsr (saves coding but may break the adjoint).
459     - replace more hardwired parameters by runtime parameters
460     - add ice masks that mask the rhs of the implicit solvers where there
461       is no ice (commented out in seaice_dynsolver, because i am not sure
462       if this works properly), eventually this should replace the clipping
463       of ice velocities in seaice_dynsolver to +/-40cm/s.
464    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
465      include it only where its needed
466    o move balancing of fluxes before the call of external_forcing_surf
467    o seaice:
468      - correct units of turning angles (now they are really in degrees)
469      - move computation of GWATX/Y out of main routine into dynsolver
470      - initialize GWATX/Y in seaice_init
471    o Apply mask on Fresh-Water flux (needed for SSH forcing).
472      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
473    o seaice: add runtime flags for turning angles (default to zero)
474    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
475      and trend from exf forcing and ctrl control adjustments
476    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
477      (since checkpoint57x_post)
478    o change the default rotation period to 86164.s = the Earth rotation
479    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
480      and based on a reference stratification. Tested within hs94.cs-32x32x5.
481    o seaice advection: add code for choosing between the default (2nd order
482      central differences) and multiDim advection schemes provided by
483      pkg/generic_advdiff
484    o seaice:
485      - removed all references to SEAICE_GRID.h fields from
486        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
487        (cubed-sphere configuration will change a little)
488      - grid computations in seaice_init are obsolete now.
489      - cleaned up code a little so that is easier to read (hopefully).
490      - added new (better?) discretizations of default advection and diffusion
491        (turn on with SEAICEuseFluxForm)
492      - replace 1 in 3d global fields by kSurface in growth.F
493      
494    checkpoint58a_post
495    o seaice:
496      - bug fix in advect.F
497    o shelfice:
498      - separate shelfice load anomaly from pload (breaks with time
499        dependent forcing), => introduce constant field shelficeLoadAnomaly.
500        Its default is 0., but it may be computed more cleverly from (unknown)
501        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
502        done offline. A good approximation of the pressure load anomaly is
503        necessary to avoid large initial adjustment processes underneath
504        deep-reaching shelfice.
505      - small fix in ISOMIP shelfice_thermodynamics
506      - add more sophisticated thermodynamics of Hellmer (1989), this is
507        now the default
508      - give a few constants more intuitive names
509    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
510      if bulk formulae are used in long integration (especially EmPmR). Turn
511      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
512      if balancePrintMean, the imbalance that is substracted is printed to
513      STDOUT.
514    o fix bug (typo) in obcs_apply_eta.F
515    o add a new package shelfice which enables us to model the circulation
516      underneath shelf-ice with draughts of hundreds of meters.
517     - works
518     - to do: + include improved thermodynamics
519              + check whether kSurfC (from model/inc/SURFACE.h) can be used
520                instead of new field kTopC
521              + can we use topoFile, Ro_surf and existing code in ini_depth.F
522                instead of new field R_shelfIce and new code in ini_depth.F
523                and ini_mask_etc.F?
524              + adjust vertical mixing schemes?
525    o seaice pkg:
526     - add a cpp-flag to include a simple formula for a salinity dependent
527       freezing point of sea water at the surface
528     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
529       meridional stresses are now different (and hopefully correct)
530    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
531       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
532       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
533    o pkg/diagnostics: add options and parameters for regional-statistics
534       diagnostics ; define regions by reading a region-mask from a file
535       (might add other options later)
536    o pkg/bulk_force:
537     - add option and parameters to use AIM surface-flux formulae.
538     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
539       others forcing fields (defined in PARM05, parameter file "data") are loaded
540       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
541     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
542     - use the right EXCH call for uwind,vwind (to work on CS-grid).
543     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
544       and parameters (note: calcWindStress replaces .NOT.readwindstress).
545     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
546    
547    checkpoint58
548    o add "--embed-source" option to genmake2 which, when the supporting
549      tools can be compiled (as determined by genmake2) will turn on the
550      embed_files package which then embeds the entire MITgcm source code
551      (*.[fFhc] + Makefile) used for the build within the executable
552      - requested by CNH but off by default
553      - adds a paltry <9MB to the mitgcmuv executable in most cases
554      - only writes the output when useEMBEDSRC in eedata is true
555    o clean up 3-dim. relaxation codes:
556      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
557      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
558      * Thanks to Tom Haine for testing!
559    
560    checkpoint57z_post
561    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
562      affects output (@ truncation level) of exp. plume_on_slope ; updated.
563    o fix the pickup behavior for obcs in combination with ptracers
564    o fix a bug in ptracers_external_fields_load
565    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
566      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
567    o transfered surface NH pressure to eta field (if exactConserv).
568    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
569         and update lab_sea output.txt file.
570    o completing 3-dim. relaxation code: additional term
571         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
572      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
573      * At compile time, in "EXF_OPTIONS.h" set
574          #define  ALLOW_CLIMTEMP_RELAXATION
575          #define  ALLOW_CLIMSALT_RELAXATION
576      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
577          tauThetaClimRelax3Dim = 15552000.0,
578          tauSaltClimRelax3Dim  = 15552000.0,
579      * 3 cases:
580          1) Use a constant-in-time 3-dim. field
581          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
582          3) Real-time relax. to time-evolving prescribed field
583    o Adding Laplacian-type smoothness constraint on
584      initial and boundary (forcing) controls (ic, bc)
585      * enable at compile-time via
586        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
587      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
588      * Absolute scale somewhat unclear so far
589      * no area weighting was included since no other cost term does so far
590    
591    checkpoint57y_post
592    First step for a NLFS adjoint
593    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
594    o new init. routines for calc_r_star, calc_surf_dr
595    o still need to deal with ini_masks_etc
596    o testreport seemed happy
597    checkpoint57y_pre
598    
599    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
600    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
601    o add new offset feature to offline pkg (plus minor cleanup)
602    o cfc fixes for final year of integration
603    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
604      be in GCHEM_OPTIONS).
605    
606    checkpoint57x_post
607    o fix testreport Pb in multiple test experiment.
608    o cleanup our namelist syntax in verification:
609      - make it more F95 standards compliant (some work still needed)
610      - allows the vast majority of our tests to work with gfortran
611    o Non-Hydrostatic:
612     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
613     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
614    o Allow to apply AB on T,S rather than on AB(gT,gS):
615     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
616     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
617       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
618     - need a "clever" read_pickup to restart from the other AB formulation
619    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
620    o remove some unused variables (reduces number of compiler warnings)
621    o adjoint
622      * Disable useVariableViscosity for adjoint for time being
623        (there are a number of extensive recomputations)
624      * Initialize certain variables needed for adjoint
625    
626    checkpoint57w_post
627    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
628                 fix the singleCpuIO RS version of MDSWRITEFIELD
629       and add a WARNING if using globalFiles=T with multi-processors.
630    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
631      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
632    o tracer advection scheme:
633      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
634       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
635       was not very convenient).
636      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
637       (further tests needed for the implicit DST & Flux-Limiter schemes).
638    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
639      and sRef for convenience, handy, when you want to initialize
640      ptracers in a large domain with a constant non-zero value. Also,
641      untangle ptracers_init.F a little.
642    
643    checkpoint57v_post
644    o change dome exp. to use variable viscosity in side-drag terms.
645    o remove all the files from the cfc_offline test since they are now
646      incorporated into tutorial_cfc_offline which has been producing
647      identical results for a few days of testing
648    o add new parameter: sideDragFactor to enable half-slip-side BC
649      and change side-drag S/R to use viscosity from mom_calc_visc
650      (can switch back by setting sideDragFactor=0.); affects results at
651      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
652       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
653    o vorticity & strain are now computed without masking, to account for
654      no-slip-side BC in variable viscosity calculation ; mask is applied
655      anyway later on, before computing advection/coriolis terms.
656    o modify exp4 to test new obcs support for reading from external files
657      and for passive tracers
658    o fix behavior of ptracers_monitor when monitor output is written to a
659      netcdf-file; still not independent of monitor.F (writes in the same
660      file).
661    o change default value of tRef (put a uniform, meaningful value for ocean
662      & atmos) and initialize sRef (was missing, as Martin mentioned).
663    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
664      to be proportional to enstrophy dissipation length.  Thus,
665       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
666      This is now consistent with Smagorinsky and with the manual.
667    
668    checkpoint57u_post
669    o OBCS and PTRACERS: add open boundary support for passive tracers
670      - either use homogenous (pseudo) v.Neumann conditions or prescribe
671        OB-values from file; this is not different from the way theta and salinity
672        are treated
673      - however, Orlanski-radiation conditions are not supported, and the model
674        will stop if you use pTracers and Orlanski at the same time.
675      - beefed up the rountine obcs_external_fields_load: now only those open
676        boundary values are overwritten with values from files for which there
677        are really files, otherwise the OB-fields remain untouched. This makes
678        it possible to use different OBs at different ends of the domain (as
679        with EXF)
680    o reduce number of exch calls in shap_filt (s2).
681    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
682      truncation level) 4/5 MLAdjust test results (11&12 digits match).
683    
684    checkpoint57t_post
685    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
686    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
687      same truncation, independent of the face number: affects affects several
688      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
689    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
690      note that biharmonic viscosity + no-slip was not tested in any experiment.
691    o fix bug in non-linear free-surf side-drag ; generate new output for
692      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
693    o make mnc honor the writeBinaryPrec flag for most kinds of output
694    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
695    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
696      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
697    o add brackets in multi-terms sum to get same truncation, independent of
698      the face number (manage to get exactly same value of gU,gV at the cs-edge)
699      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
700    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
701      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
702      a maximum grid-scale Reynolds number.  Also, changes all length calculations
703      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
704      Suggested values of viscosity parameters found in mom_calc_visc.
705      Many new viscosity diagnostics available.
706    
707    checkpoint57s_post
708    o Add clearing-house for viscosity calculations, mom_calc_visc and
709      correct numerous bugs in LeithD and Smagorinsky discretizations.  
710      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
711      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
712      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
713      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
714      The Strain-Tension form is now called with useStrainTensonVisc=.true.
715      ViscAhStrain and viscAhTension are now retired.
716    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
717    o In response to JMC's bug report, genmake2 now ignores any soft-links
718      that it finds in the *current* directory when searching for files.
719      Soft-links found in any other source directories will still work as
720      they did before.
721    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
722      a C routine to unlimit the stack size
723    o mnc-ify pkg/aim snapshot vars
724    o mnc-ify pkg/land as requested by Daniel
725    o various changes to mnc including:
726      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
727      - output can now be grouped so that all files within a group
728          change the ITER portion of their names in lock-step together
729      - can now read ("global") PER-FACE (in addition to PER-TILE) files
730          and works with both EXCH1 and EXCH2 (but needs more testing)
731      - writing works for all verification test cases w/ g77 on Linux
732    
733    checkpoint57r_post
734    o make MNC variable initialization happen earlier
735    o add diagnostics for (almost) each term of the momentum Eq.
736    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
737    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
738    o remove MINIMAL_TAVE_OUTPUT option ;
739      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
740    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
741      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
742    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
743    o add time-dependent SST, SSS control
744    o cost terms in ecco/ modularized (new cost_generic.F)
745    o cost_averages routines are modularized (new cost_averagesgeneric.F)
746    o new infrastructure for seaice model vs. obs misfits in seaice/
747      * driver from the_main_loop.F is seaice_cost_driver.F
748      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
749      * gradient check in Exp. 6a of natl_box_adjoint/
750    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
751      (see README file)
752    
753    checkpoint57q_post
754    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
755    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
756      - bug was reported by Jean-Michel and Ian Fenty
757    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
758      update exp. cpl_aim+ocn output.
759    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
760      Needed for high-res. runs with large global files
761      to be able to limit tapelev size
762    o Changed some tests for adjoint:
763      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
764      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
765      * global_ocean.90x40x15/ back to default 3-level checkpointing
766    o Modifications to enable scripted COMMON to MODULE conversion
767      * verification/OpenAD/code/ has necessary scripts and description;
768      * converts, compiles and runs successfully;
769    
770    checkpoint57p_post
771    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
772    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
773      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
774    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
775    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
776      (was already the case for dissipation with mom_vecinv,
777       and also the case for grad.PhiHyd when staggered-timeStep)
778      This will allow to put dissipation out-off the AB time-stepping.
779     Unfortunately, affects truncation error. Update output of exp. that "fails"
780      (cg2d matching number) and leave the others for later: front_relax(10),
781      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
782      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
783    
784    checkpoint57o_post
785    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
786      (2) its ready to be documented during the 20050801 DocFest
787    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
788      for ideal_2D_oce and lab_sea on linux_ia32_g77
789    o set to #undef CTRL_SET_OLD_MAXCVARS_30
790      in global1x1_tot/code_seaice_adj to access indices 32, 33
791      (worth another tag)
792    
793    checkpoint57n_post
794    o adding precip control xx_precip 32
795    o adding swflux control xx_swflux 33
796    o Replacing 10 forcing penalty cost routines by 1 generic.
797    o Implementing partitioning in time-mean and variable adjustment
798      for atmos. state.
799    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
800  o in natl_box_adjoint:  o in natl_box_adjoint:
801    * updated: results_bulk/    * updated exp 1 to 10
802    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
803    o updated global1x1/*_seaice_adj/
804      to incorporate latest changes
805    o enable useSingleCpuIO for mdsio vector routines
806      (applies in particular to tapelev I/O)
807    o removed inefficient K-loop in all active_file*control*.F
808    
809  checkpoint57m_post  checkpoint57m_post
810  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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