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revision 1.576 by jmc, Thu Nov 3 17:34:32 2005 UTC revision 1.802 by jmc, Mon Apr 30 16:03:40 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/thsice: rename run-time parameters:
8       himin       -> hIceMin
9       himin0      -> hThinIce
10       hihig       -> hThickIce
11       i0          -> i0swFrac
12       transCoef   -> bMeltCoef
13       frac_energy -> fracMelting
14      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
15       with default values (for now) that do not change the results.
16      remove old version of thsice vars advection in pkg/seaice.
17    o in FFIELDS.h:
18      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
19      - make pLoad & sIceLoad always available (but still only used if
20         ATMOSPHERIC_LOADING is #define).
21    o pkg/kpp: replaced _KPP_RL with _RL
22    o bug fixes for vertical diffusivity computations when both KPP and
23        3D diffusivity arrays are used.
24    o pkg/seaice: fix bug in evp solver, while doing that
25      - change (improve?) discretization of stress computations for both
26        cgrid-lsr and evp solver
27      - add a new routine to compute strain rates
28      - the above changes lab_sea results
29      - add no slip conditions for evp solver (off by default), lsr-version
30        may follow
31      - fix exchange for shear at Z-points (does not change lab_sea)
32      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
33        (to force the user to pick a time step since there is not "safe" way
34        of choosing it)
35      - add principal stress diagnostics
36      - rearrange fields for evp a little to avoid having to call a: too many
37        exchanges and b: exchanges for stress trensor components which we do
38        not have.
39      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
40        of evp, complete rewrite for lsr case (latter is does not yet work
41        in all cases)
42    o pkg/kpp: add code to have mixing in shelf ice caverns
43    
44    checkpoint59
45    o pkg/exf:
46      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
47        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
48      - move exf header files from lower_case.h to UPPER_CASE.h ;
49        add missing cvs Header & Name
50      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
51      - add namelist param. selectStressGridPosition, exf_monFreq
52      - retire many _CLIM routines, and remove data.exf_clim
53        + params moved to data.exf
54        + climsst, climsss now handled by exf_set_gen, i.e.
55          climss?period=0 refers to constant field,
56          climss?period=-12 to monthly forcing
57      - split up namelists in data.exf
58    o pkg/seaice:
59      - remove seaice_exch and seaice_exch_uv
60      - remove superfluous exchange of theta
61      - add myThid to seaice_budget_ocean/ice
62      - add new interface for atmospheric wind forcing (C-grid only)
63        + new routine
64        + two new field (taux, tauy for stress over ice)
65        + removed one global field (DAIRN) for C-grid case only
66    o pkg/thsise
67      - 2nd set of modifs for thsice adjoint in conjunction with exf
68    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
69    
70    checkpoint58y_post
71    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
72      vertical diffusivity, similar to that in MOM4; turned on using
73      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
74      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
75    o Added capability for 3D specification of background vertical diffusion
76      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
77      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
78      "data" file that contains the 3D vertical diffusivity coefficients.
79    o ice dynamics (pkg/seaice) with thsice thermodynamics:
80      - add code within pkg thsice to advect & diffuse sea-ice fields
81      similar to (and will replace) what has been added in  seaice_advdiff.F,
82      but: - conserving Mass, Heat & Salt.
83           - better when using non-linear advection scheme (not yet fully tested)
84           - can also be used in atmospheric set-up (for now, only the diffusion).
85    
86    checkpoint58x_post
87    o IO option for global-file compact format:
88      - add options when generating topology (utils/exch2/matlab-topology-generator)
89      - add I/O capability (pkg/mdsio).
90      - adapt utils/matlab/rdmds.m to read this format.
91      for now long-line format not yet supported by pkg/mdsio (& exch2).
92    o shelfice: add a few diagnostics
93    
94    checkpoint58w_post
95    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
96      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
97      (and replace horiVertRatio in NH code).
98      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
99                         and tutorial_plume_on_slope (sensitive to truncation)
100    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
101      directly to drive seaice model (C-grid only)
102    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
103     - reintroduce computation of wind from stress,
104     - compute tau (in exf_bulkformulae.F) from windstress averaged to
105       mass points to avoid tau = 0
106     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
107    o rdmnc.m: make it work with "global" files created with gluemnc
108    o rdmnc.m : some improvements in dealing with singleton dimension
109      (tested on all testreport mnc output files).
110    o genmake2: disable pkg/profiles if netcdf test fails.
111    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
112    o move call to cal_readparms up to make calendar parameters/variable available
113      to all packages
114    
115    checkpoint58v_post
116    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
117      useDynP_inEos_Zc tested.
118    o pkg/exf: changes to properly interpolate/mask/scale initial fields
119    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
120      and portions thereof.  See read_cs.txt for description and examples.
121    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
122      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
123      following the great-circle arc between those 2 points.
124    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
125      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
126    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
127     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
128     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
129     - still needs work (not working with some options ; efficiency to improve)
130       and serious testing.
131     - use this scheme for temperature & salinity in 2 advection test exp.:
132       advect_xy & advect_xz, respectively.
133    
134    checkpoint58u_post
135    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
136    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
137    o testreport: add option "-skipdir" to skip some test.
138    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
139      momentum calculation.
140    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
141    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
142      remove checkpoint.F and the_correction_step.F (no longer used);
143      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
144    o add option (linFSConserveTr) to correct for tracer source/sink due to
145      Linear Free surface
146    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
147    o pkg/thsice: fix reading mnc-pickups
148    
149    checkpoint58t_post
150    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
151    o pkg/mdsio:
152     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
153       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
154       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
155     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
156     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
157       either MDS_READ_FIELD or MDS_WRITE_FIELD )
158     - new S/R (to replace MDSWRITEMETA), which allows to write more
159       informations (variable names, time ...) to meta files.
160     - modify rdmds.m to give back the meta file content.
161    o pkg/diagnostics: change vertical interpolation to be safer, and more
162       flexible (define p-levels to interpolate to in data.diagnostics);
163      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
164       diagnostic pointer.
165    o pkg/seaice: more cleaning up of seaice_growth, added many comments
166    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
167    o fix multi-category seaice:
168     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
169       SEAICE_MULTICATEGORY
170     - fix short wave heat flux
171    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
172       and allow to use EVP solver. Change forward lab_sea: test both EVP
173       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
174    o Initial check-in of lab_sea adjoint
175      (very similar to natl_box_adjoint/code_seaice)
176      * used C-grid and EVP solver
177      * used KPP, GM/Redi
178      * uses inAdExact=.TRUE.
179      * gradient checks fail for both ADM and TLM
180        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
181        f.d. gradients actually seem more problematic than ADM, TLM gradients;
182        issue is related to forward mismatch between g77 an ifort
183    o pkg/seaice: overhaul of thermodynamics
184     - growth.F and groatb.F are replaced by new routine seaice_growth.F
185     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
186     - move a few global fields out of SEAICE.h into seaice_growth.F and
187       make them 2D (FICE/QNETO/ ...)
188     - remove FO (it is the same as QNETO)
189     - introduce a few local fields to avoid modifying external fields such
190       as atemp, etc.
191    
192    checkpoint58s_post
193    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
194      changed exf_set_gen.F so that
195        genperiod=0 means input file is one time-constant field and
196        genperiod=-12 means input file contains 12 monthly means
197    o CG2D: use pre-computed solver main-diagonal (stored in common block);
198      this affects truncation error ; generate new output file for exp. which
199      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
200        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
201        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
202        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
203        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
204        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
205    o start implementation of deep-atmosphere and anelastic formulation
206    o verification: remove 2nd copy of input files and use script "prepare_run"
207      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
208    o mom_common/vecinv/fluxform: fix a few initialisation isssues
209    o profiles: fix for multithreaded case
210    
211    o diagnostics: rename few diags:
212      s/'PRESSURE'/'RCENTER '/g
213      s/'TICE    '/'oceFreez'/g
214      s/'TAUX    '/'oceTAUX '/g
215      s/'TAUY    '/'oceTAUY '/g
216      s/'SWFLUX  '/'oceQsw  '/g
217      s/DIFx/DFxE/g
218      s/DIFy/DFyE/g
219      and add few ocean-forcing diagnostics:
220      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
221    o modifications to pkg/seaice/growth.F and budget.F, which change results of
222      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
223      as actual snow thickness.  It now refers everywhere to effective snow
224      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
225    
226    checkpoint58r_post
227    o modifications to pkg/seaice/growth.F, which change results of
228      lab_sea experiment: fixes pertain to melting snow over open water, to
229      masking EVAP under sea ice, and to using the correct AREA variable for
230      computations of EVAP, PRECIP, HSNOW, and GHEFF
231    o add ability to read bathy, salt, and theta using MNC (off by def)
232    o add flooding algorithm and advection of HSNOW for pkg/seaice;
233      both are turned off by default and do no change any results
234    o seaice advection with pkg/thsice: a step toward the use of non-linear
235      advection scheme, but #ifdef or commented out for now (requires more EXCH).
236    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
237      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
238      in natl_box (affects results @ truncation level: update output.txt)
239    o multi-threading and IO:
240      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
241      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
242        (needed to work with SingleCpuIO): tested in all verif. exp.
243    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
244      affects the results (but none of the verification test uses this scheme).
245    o Adding some pkg/diagnostics capability to pkg/seaice
246      (will certainly be subject to changes)
247    o ctrl: adding new control variables:
248      lwflux, lwdown, evap, snowprecip, apressure, runoff
249    
250    checkpoint58q_post
251    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
252      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
253      high_res_cube configuration by 4% on Columbia.
254    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
255      add (in global_with_exf/code) a version of EXF_INTERP_READ without
256      dynamical allocation (seems to work in multi-threaded).
257    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
258      single CPU io) so that TAF does not have to see EESUPPORT.h
259    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
260    
261    checkpoint58p_post
262    o obcs: stop if obcs is used with useCDscheme = .true.
263    o shelfice:
264     - fix a sign error so that no slip at shelfice interface works
265     - remove stop for combination non-hydrostatic code and shelfice. That does
266       not mean, that the results are correct, but at least they are numerically
267       stable
268    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
269    o added adjoint exch routined for all exch*3d* routines
270      and updated flow directives
271    
272    checkpoint58o_post
273    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
274      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
275    o change controling S/R for writing pickup file (new S/R do_write_pickup)
276      and clean-up reading/writing of pickup files.
277    o fix local version of read/write pickup (NH part) in rotating_tank/code
278    o simplify EXCH interface:
279     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
280     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
281    o added the regrid package
282    o shelfice:
283     - add a simple boundary layer scheme to reduce noise
284     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
285    
286    checkpoint58n_post
287    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
288       local variable (not in common block).
289    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
290      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
291      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
292        to work with SingleCpuIO.
293    o add "_d 0" to real constant of pkg/cfc subroutines ;
294       update exp. cfc_exemple & tutorial_cfc_offline output files.
295    o multi-threading and IO:
296      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
297        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
298      - barrier before and after reading.
299      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
300      - avoid using MDS_WRITELOCAL for LAND pkg output.
301      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
302        common-block variables ; Allows multi-threading with master-thread IO.
303    o change default MAX_NO_THREADS from 32 to 4 ;
304      and stop cleanly when MAX_NO_THREADS is too small.
305    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
306    
307    checkpoint58m_post
308    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
309       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
310    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
311       keep global_ocean.90x40x15 (for AD testing) with former secondary test
312       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
313    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
314        add MITgcm_tutorials (= code + all the tutorials)
315    o ecco, option to compute cost for total ssh (mean+anom)
316    o consistent with addition of ptracer and ssh in pkg/profiles
317    o profiles: adding ptracer and ssh
318    o testreport: change multi-test output-file name
319      (from output.txt.{name} to output.{name}.txt)
320    o profiles: now ok for mutli-tiles case
321    o seaice: add 4 parameters for different advection schemes for area,
322      (effective) seaice thickness, enthalphy, and snow height. Their default
323      is the standard parameter SEAICEadvScheme
324    o calc_gw:
325     - add cosFacU in zonal viscous flux (harmonic.visc.).
326     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
327       of tutorial_plume_on_slope.
328    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
329    o calc_gw: true flux-form, account for horizontal grid spacing.
330      update rotating_tank results, but not plume_on_slope (affected at
331      truncation level, 11 digits).
332    
333    checkpoint58l_post
334    o calc_gw:
335     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
336     - remove side-drag for now (need to fix it); update plume_on_slope results.
337     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
338    o commit code to make SST/SSS weights spatially variable
339      (based on either variable in-situ or variable initial T/S weights)
340    o pkg/ecco:
341      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
342        now based on horizontally varying weights wthetaLev, wsaltLev
343      * cost_averagesflags now returns year indices in addition to day, month
344      * sflux balance is performed on annual basis
345        (sflxumm, sfluxmm2, bal_sfluxmm)
346      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
347        including separate counting and multipliers
348    o pkg/rbcs
349      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
350    
351    checkpoint58k_post
352    o testreport:
353     - always build in dir. "build" (if not there, mkdir build instead of building
354       & running in input)
355     - run in dir run (if it exists), in build otherwise.
356     - call prepare_run (if input/prepare_run exists)
357     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
358    o pkg/exf modifications to interpolation and rotation routines for more
359       reasonable treatment of North Pole singularity: for tracers North Pole
360       value is set to northernmost zonal-mean value, for zonal velocity it is
361       set to zero, and for meridional velocity it is set to northernmost value.
362    o pkg/exf/exf_check_range.F
363     - add tile index to diagnostics and move stop statement to the very
364       end of the routine.
365    o pkg/diagnostics: (diagnostics_main_init.F)
366      define title of isomorphic variables according to the current config.
367    o pkg/thsice with pkg/seaice dynamics:
368    - fix domain of computation (interior only, required for exf) and do exchanges
369    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
370    o towards a standard way of dealing with multi-threading in MONITOR
371      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
372    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
373       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
374    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
375    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
376    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
377       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
378    o tracer advection:
379     - clean-up and simplify calc_common_factors.F
380     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
381       advection subroutine (but still not used within DST advection S/R)
382    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
383    
384    checkpoint58j_post
385    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
386      from file (collects calls previously in FORWARD_STEP)
387    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
388    o adjoint store dir. adjusted accordingly
389    o genmake2
390      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
391    
392    checkpoint58i_post
393    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
394      on wind stress (SEAICEstressFactor defaults to 1.)
395    o Total number of Timers is finite (<=40): comment out 2 non-essential one
396      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
397    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
398      on CS-grid: no longer loosing mass.
399    o exf & curvilinear-grid: no longer modify longitude xC & xG.
400    o pkg/ggl90: fix sloppy output and fix a bug
401    o pkg/seaice: added SEAICEuseEVPpickup parameter
402      - Set to false in order to start EVP solver with
403        non-EVP pickup files when using SEAICEuseEVP
404      - fix sign error in diffusion in seaice_calc_rhs
405    
406    checkpoint58h_post
407    * Modifications for bottom topography control
408      o replace hFacC by _hFacC at various places
409      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
410      o add non-self-adjoint cg2d_nsa
411      o update autodiff support routines
412      o re-initialise hfac after ctrl_depth_ini
413      o works for 5x5 box, doesnt work for global_ocean.90x40x15
414    * Adding verification for 5x5 box (4-layer) bottom topography control
415    
416    checkpoint58g_post
417    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
418       used for mean seasonal cycle, mean diurnal cycle); add an example
419       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
420    o pkg/ggl90:
421      - add parameter (minimum surface kinetic energy)
422      - fix bug (avoiding division by zero)
423    o couple pkg/thsice to pkg/seaice:
424      - modify advection in seaice to accomodate new scalar fields to be advected
425      - only muliDimAdection scheme work with seaice/thsice
426      - mapping of thsice-variables to seaice-variables, back and forth
427      - does not break the verification experiments, but does not give the
428        desired results either
429    o pkg/seaice
430      - make (default) second order advection a bit less confusing?
431    
432    checkpoint58f_post
433    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
434      to pkg/seaice):
435      - new routines thsice_map_exf and thsice_get_exf provide the interface
436      - add an additional formal parameter to thsice_solve4temp
437    o pkg/exf:
438      - add new fields wspeed, snowprecip (to be able to couple to thsice)
439      - correct Stefan-Boltzmann constant
440      - new parameter for longwave surface emittance
441      - separate some stuff from exf_bulkformulae into new routines  
442        exf_radiation, exf_wind
443      - add new parameters and constants: longwave emissivity for ocean, ice
444        and snow, evaporation parameters over ice
445      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
446        either wind from stress or stress from wind
447    o pkg/thSIce:
448    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
449    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
450       and THSICE_CALC_THICKN
451    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
452    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
453      to make debugging easier.
454    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
455    o pkg/bulk_force:
456      - clean-up comments and parameters ;
457      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
458    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
459      generate new output for test-experiment: aim.5l_cs.thSI
460    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
461      testreport accordingly
462    
463    checkpoint58e_post
464    o SEAICE_CGRID adjoint done
465    o R_STAR adjoint implemented.
466      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
467      * need to sort out init. of h0facc, etc.
468    o Make pkg/profile fully independent of ecco,cost, etc. stuff
469      to be able to use it in pure forward.
470    
471    checkpoint58d_post
472    o upgrade simple test-experiment to tutorial example:
473     step.1: duplicate the experiment and (step.2) will remove the old copy.
474      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
475      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
476      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
477      tutorial_global_oce_biogeo    <- copy of dic_example
478      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
479      tutorial_plume_on_slope       <- copy of plume_on_slope
480      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
481      tutorial_global_oce_optim     <- empty for now (David ?)
482      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
483     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
484    o correct a sign problem in cost_scat.F
485    o obcs and ptracers: fix boundary conditions for advections schemes
486      with larger stencil
487    o thsice adjoint: start
488    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
489      completeness
490    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
491      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
492    o ptracers adjoint:
493      * avoid extensive recomputatations
494      * fix missing re-init. of gptr (missed by TAF)
495    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
496      me to turn off the excessive output to STDOUT that this package produces
497    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
498      and add those terms in Vector-Invariant formulation.
499    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
500      if the control period (xx_hfluxperiod etc) is 0
501    o in profiles pkg, clean routines and fix details
502    o in ecco pkg, reading ssh data:
503      fix problem in case the model does not start at iter0=0
504    o fix mnc-pickup/restart for ptracers
505    o new package prifiles:
506      code to compute profile-based cost by Gael Forget
507      (modifs in ecco, ctrl, autodiff)
508    o Benign bug fix in initialization (spotted by M. Mazloff) of
509      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
510    
511    checkpoint58c_post
512    o adjoint: finish NLFS adjoint and provide reference output in
513      verification/global_ocean.90x40x15/results_ad_nlfs
514    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
515      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
516      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
517      with SEAICE_CGRID defined.
518    o move calendarDumps from "data" to "data.cal" and clean-up the code
519      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
520    o add useEXF & useCAL flags (for now, set in hard-coded way)
521    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
522      (were missing in NH mode, and wrong in quasihydrostatic mode).
523      waiting for Chris updated version of calc_gw to add those CALLs.
524    o fix bug in quasihydrostatic S/R ;
525      add a test for this option: global_ocean.90x40x15.qshyd
526    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
527      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
528    o add on/off flag useOffLine for package OFFLINE
529    o seaice:
530      - modify advection so that it works also on the C-grid
531      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
532        problem in multi-tile runs with C-grid
533      - add flags for clipping ice velocities and/or masking solver forcing
534      - fix drag (ocean on ice) formulation and a bug that caused noise in the
535        C-grid solver
536      - added a few comments to seaice_diffusion.F
537      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
538        are now exclusive)
539      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
540        required re-ordering the code a little:
541       + make DAIRN global variable (defined in SEAICE)
542       + move computation of the viscosities eta and zeta into a new separate
543         routine (because I need to recompute them in seaice_ocean_stress.F)
544    
545    checkpoint58b_post
546    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
547      update output.txt of exp. aim.5l_cs.thSI
548    o various mnc cleanups and improvements:
549      + shrink lookup tables by factor of ~4
550      + better error reporting when running out of lookup space
551      + able to handle longer path/file names (up to 500 chars)
552    o adjoint:
553      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
554      - TBD: "hidden" mom_vecinv recomp. in dynamics
555    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
556     (allow to differentiate between forcing components using new integer flags:
557      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
558     and add new flag to put Dissipation tendency out of Adams-Bashforth.
559    o ecco
560      - enable trend removal from SSH anomaly obs.
561    o adjoint
562      - a fix for PmEpR when #undef EXACT_CONSERV
563      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
564      - try to fix "hidden" recomp. in forward_step for NLFS
565        (NLFS seems broken sometimes after I checked it in)
566    o seaice:
567     - add c-grid version of the dynamic solver:
568       + three new routines that are the c-grid substitute lsr, dynsolver
569         and ostres
570       + put a few fields that were local to dynsolver into global common
571         blocks, so that I can move the computation of stresses etc into
572         seaice_lsr (saves coding but may break the adjoint).
573     - replace more hardwired parameters by runtime parameters
574     - add ice masks that mask the rhs of the implicit solvers where there
575       is no ice (commented out in seaice_dynsolver, because i am not sure
576       if this works properly), eventually this should replace the clipping
577       of ice velocities in seaice_dynsolver to +/-40cm/s.
578    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
579      include it only where its needed
580    o move balancing of fluxes before the call of external_forcing_surf
581    o seaice:
582      - correct units of turning angles (now they are really in degrees)
583      - move computation of GWATX/Y out of main routine into dynsolver
584      - initialize GWATX/Y in seaice_init
585    o Apply mask on Fresh-Water flux (needed for SSH forcing).
586      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
587    o seaice: add runtime flags for turning angles (default to zero)
588    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
589      and trend from exf forcing and ctrl control adjustments
590    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
591      (since checkpoint57x_post)
592    o change the default rotation period to 86164.s = the Earth rotation
593    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
594      and based on a reference stratification. Tested within hs94.cs-32x32x5.
595    o seaice advection: add code for choosing between the default (2nd order
596      central differences) and multiDim advection schemes provided by
597      pkg/generic_advdiff
598    o seaice:
599      - removed all references to SEAICE_GRID.h fields from
600        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
601        (cubed-sphere configuration will change a little)
602      - grid computations in seaice_init are obsolete now.
603      - cleaned up code a little so that is easier to read (hopefully).
604      - added new (better?) discretizations of default advection and diffusion
605        (turn on with SEAICEuseFluxForm)
606      - replace 1 in 3d global fields by kSurface in growth.F
607      
608    checkpoint58a_post
609    o seaice:
610      - bug fix in advect.F
611    o shelfice:
612      - separate shelfice load anomaly from pload (breaks with time
613        dependent forcing), => introduce constant field shelficeLoadAnomaly.
614        Its default is 0., but it may be computed more cleverly from (unknown)
615        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
616        done offline. A good approximation of the pressure load anomaly is
617        necessary to avoid large initial adjustment processes underneath
618        deep-reaching shelfice.
619      - small fix in ISOMIP shelfice_thermodynamics
620      - add more sophisticated thermodynamics of Hellmer (1989), this is
621        now the default
622      - give a few constants more intuitive names
623    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
624      if bulk formulae are used in long integration (especially EmPmR). Turn
625      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
626      if balancePrintMean, the imbalance that is substracted is printed to
627      STDOUT.
628    o fix bug (typo) in obcs_apply_eta.F
629    o add a new package shelfice which enables us to model the circulation
630      underneath shelf-ice with draughts of hundreds of meters.
631     - works
632     - to do: + include improved thermodynamics
633              + check whether kSurfC (from model/inc/SURFACE.h) can be used
634                instead of new field kTopC
635              + can we use topoFile, Ro_surf and existing code in ini_depth.F
636                instead of new field R_shelfIce and new code in ini_depth.F
637                and ini_mask_etc.F?
638              + adjust vertical mixing schemes?
639    o seaice pkg:
640     - add a cpp-flag to include a simple formula for a salinity dependent
641       freezing point of sea water at the surface
642     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
643       meridional stresses are now different (and hopefully correct)
644    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
645       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
646       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
647    o pkg/diagnostics: add options and parameters for regional-statistics
648       diagnostics ; define regions by reading a region-mask from a file
649       (might add other options later)
650    o pkg/bulk_force:
651     - add option and parameters to use AIM surface-flux formulae.
652     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
653       others forcing fields (defined in PARM05, parameter file "data") are loaded
654       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
655     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
656     - use the right EXCH call for uwind,vwind (to work on CS-grid).
657     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
658       and parameters (note: calcWindStress replaces .NOT.readwindstress).
659     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
660    
661    checkpoint58
662    o add "--embed-source" option to genmake2 which, when the supporting
663      tools can be compiled (as determined by genmake2) will turn on the
664      embed_files package which then embeds the entire MITgcm source code
665      (*.[fFhc] + Makefile) used for the build within the executable
666      - requested by CNH but off by default
667      - adds a paltry <9MB to the mitgcmuv executable in most cases
668      - only writes the output when useEMBEDSRC in eedata is true
669    o clean up 3-dim. relaxation codes:
670      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
671      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
672      * Thanks to Tom Haine for testing!
673    
674    checkpoint57z_post
675    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
676      affects output (@ truncation level) of exp. plume_on_slope ; updated.
677    o fix the pickup behavior for obcs in combination with ptracers
678    o fix a bug in ptracers_external_fields_load
679    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
680      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
681    o transfered surface NH pressure to eta field (if exactConserv).
682    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
683         and update lab_sea output.txt file.
684    o completing 3-dim. relaxation code: additional term
685         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
686      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
687      * At compile time, in "EXF_OPTIONS.h" set
688          #define  ALLOW_CLIMTEMP_RELAXATION
689          #define  ALLOW_CLIMSALT_RELAXATION
690      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
691          tauThetaClimRelax3Dim = 15552000.0,
692          tauSaltClimRelax3Dim  = 15552000.0,
693      * 3 cases:
694          1) Use a constant-in-time 3-dim. field
695          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
696          3) Real-time relax. to time-evolving prescribed field
697    o Adding Laplacian-type smoothness constraint on
698      initial and boundary (forcing) controls (ic, bc)
699      * enable at compile-time via
700        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
701      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
702      * Absolute scale somewhat unclear so far
703      * no area weighting was included since no other cost term does so far
704    
705    checkpoint57y_post
706    First step for a NLFS adjoint
707    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
708    o new init. routines for calc_r_star, calc_surf_dr
709    o still need to deal with ini_masks_etc
710    o testreport seemed happy
711    checkpoint57y_pre
712    
713    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
714    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
715    o add new offset feature to offline pkg (plus minor cleanup)
716    o cfc fixes for final year of integration
717    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
718      be in GCHEM_OPTIONS).
719    
720    checkpoint57x_post
721    o fix testreport Pb in multiple test experiment.
722    o cleanup our namelist syntax in verification:
723      - make it more F95 standards compliant (some work still needed)
724      - allows the vast majority of our tests to work with gfortran
725    o Non-Hydrostatic:
726     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
727     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
728    o Allow to apply AB on T,S rather than on AB(gT,gS):
729     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
730     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
731       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
732     - need a "clever" read_pickup to restart from the other AB formulation
733    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
734    o remove some unused variables (reduces number of compiler warnings)
735    o adjoint
736      * Disable useVariableViscosity for adjoint for time being
737        (there are a number of extensive recomputations)
738      * Initialize certain variables needed for adjoint
739    
740    checkpoint57w_post
741  o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names  o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
742               fix the singleCpuIO RS version of MDSWRITEFIELD               fix the singleCpuIO RS version of MDSWRITEFIELD
743     and add a WARNING if using globalFiles=T with multi-processors.     and add a WARNING if using globalFiles=T with multi-processors.

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