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revision 1.615 by jmc, Thu Mar 2 02:03:39 2006 UTC revision 1.855 by heimbach, Fri Jul 27 22:22:37 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 exch2 adjoint
8      First set of changes:
9      - add exch2 hand-written adjoint templates
10      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
11        This will require cleanup in pkg/autodiff/*.F
12        (changed routines currently kept separate in verif. code/)
13      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
14        that used to hide exch2 or cubed-sphere specific code
15        (commented via 'cph-exch2')
16    
17    checkpoint59e
18    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
19      for B-grid vector (not yet tested) and C-grid vector (<- only used
20      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
21    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
22      (#ifdef ALLOW_SALT_PLUME)
23    o gather_2d/scatter_2d: removed halo regions
24    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
25      scheme and the corresponding test case (under front_relax dir). For now,
26      only available with Skew-flux form and not yet tested in realistic set-up.
27      adjoint: store directives updated, but gradient checks deteriorated,
28      so maybe GM/Redi adjoint is now broken.
29    o seaice adjoint
30      * add AREA, HEFF, HSNOW as control variable
31        (should not change lab_sea results)
32      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
33    o pkg/seaice:
34      * added computation of saltFlux in seaice_growth;
35        For time being, sea ice salinity is assumed constant
36        contribution of snow flooding to freshening of sea ice is neglected.
37        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
38        defaults to 0.0 in order to maintain backward compatibility.
39        Typical values for SEAICE_salinity are 4 to 10 g/kg.
40      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
41      * added SEAICE_availHeatFrac, which specifies fraction of surface level
42        heat content used to melt or grow ice
43      * commented out cap of HICE: it helps keep ice thinner
44      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
45      * applied OBCS T/S mask to HEFFM sea ice mask
46    
47    checkpoint59d
48    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
49     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
50     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
51    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
52     and change default value of parameter "GM_Small_Number";
53     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
54       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
55       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
56    o pkg/ecco: cost function when applying pkg/smooth to controls
57    o pkg/ctrl: add forcingPrecond run time parameter
58    o pkg/seaice:
59     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
60     - fix bug in metric terms of u-equation in LSR solver (implicit part),
61       changes verification/lab_sea
62     - rearrange implicit part of u-equation in LSR solver to make it easier to
63       read, understand, and debug. This causes changes at the truncation level.
64     - fix (serious) bug in the boundary conditions (sign error in the implicit
65       part) of the LSR solver. Changes all LSR results.
66     - fixed problem with HSNOW initialization to avoid thick snow when AREA
67       is initilized with small values - does not change lab_sea results.
68     - added HsnowFile initialization capability
69    o pkg/smooth: addition to model/src and pkg/ctrl so allow
70     initialization of pkg/smooth and application to control vector
71    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
72    o dependencies: pkg/profiles requires pkg/cal
73    o pkg/profiles:
74     - added option ALLOW_PROFILES_GENERICGRID
75         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
76         that interpolation information (grid points and coefficients) is provided
77         within the netcdf input files.
78         -> sample matlab scripts can be found in MITgcm_contrib/gael
79         that allow you to prepare netcdf input files.
80     - also modified: cleaner include statements, cleaner error print statements,
81       cleaner stops when error, and more tests of the netcdf input files consistency.
82    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
83    o pkg/seaice:
84     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
85       requires a new routine: seaice_diagnostics_fill.F
86     - make sure that seaice does not move if not forced (pressure replacement
87       method, Hibler and Ip, 1995), changes results
88     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
89     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
90       It is turned off by default (=-1.), because it changes the results.
91     - make it possible to read AREA from a file, too.
92    
93    checkpoint59c
94    o add S/R and diagnostics for oceanic mixed-layer depth
95    o move GMRedi call after all vertical mixing schemes (including KPP)
96    o pkg/thsice:
97     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
98      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
99    o pkg/obcs:
100     - bug fix for balance code
101    o pkg/seaice:
102      - allow values of SEAICE_elasticParm > 1
103      - add new parameter SEAICE_evpTauRelax as an alternative
104        to SEAICE_elasticParm
105      - make lsr boundary conditions free slip (by default), changes result
106      - add code for no slip boundary conditions for lsr
107      - set minimum of zeta to zero (and not 4e8) (changes results)
108      - add a cap on AREA after advecting AREA if seaice_growth is not called
109    o change calculation of Visbeck K:
110      - no longer depend on tapering scheme; instead, compute slope (limited
111        by GM_maxSlope). this is equivalent to what was comuted before with
112        clipping or linear tappering.
113      - fix vertical averaging (wrong by 1/2 level)
114      - leave the old version (but will not be maintained) within
115        #ifdef OLD_VISBECK_CALC / #endif
116      - update output of exp. ideal_2D_oce
117    o change error catch in calc_r_star to improve vectorization
118    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
119      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
120    o adjoint:
121      Re-organized adjoint checkpointing according to Matt Mazloff
122      (but with modifs/completions/cleanups)
123      Storing is now bundled into large arrays to optimized I/O
124      (and second step in cleanup of the_main_loop)
125    
126    checkpoint59b
127    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
128      - export/import (between ocean & coupler) fields needed for ocean DIC.
129    o pkg/seaice:
130      - get rid of three more exchanges seaice_calc_viscosities (required
131        different loop boundaries in seaice_lsr and seaice_ocean_stress)
132      - bug fix in seaice_ocean_stress (update of lab_sea required)
133      - reduce loop boundaries to necessary minimum also in seaice_evp
134      - go back to the old way of computing deltaC/Z as the adjoint likes that
135        better
136    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
137      passive tracer to an Age Tracer) + update output.txt
138    o pkg/exf:
139      - implement A-grid / C-grid selection for wind-stress input files.
140      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
141      for now, in exf_bulk_largeyeager04.F only :
142      - change implementation for case where windspeed + 2. components wind-stress
143        are read-in. AND use rhoConstFresh to convert evap.
144    o pkg/seaice:
145      - use correct EXCH_UV for wind-forcing (on A-grid).
146      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
147        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
148    o pkg/exf:
149      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
150      EXF_INTERPOLATION:
151      - merge global_with_exf/code version of exf_interp_read.F
152        to the main code ;
153      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
154        reading the file ; Important: This options needs to be defined to recover
155        previous code.
156        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
157      - no longer loose real*8 precision along the way when using exf_iprec=64.
158    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
159      - change discretisation of evp-solver in order to avoid another exchange
160        (changes lab_sea) and clean up a little
161      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
162        help the adjoint (this also changes the results slightly)
163      - add a few "_d 0" where they had been missing in seaice_evp.F
164      - cleaning up: remove unused seaice_calc_rhs.F
165    o pkg/exf: some cleaning-up:
166      - change various "constants" into runtime parameters
167      - cleaned-up Large&Yeager04 routine which should eventually
168        replace exf_bulkformulae.F (changed names of S/R and CPP)
169        and merged various ALLOW_ATM_WIND options
170     only used with thsice pkg (in thsice_get_exf.F):
171      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
172        which are used when useStabilityFct_overIce=TRUE (= the default)
173      - change default values of ice & snow emissivity and scale downward LW
174        by ice & snow emissivity.
175    o pkg/thsice:
176     fix few little problems, in thsice_calc_thickn.F:
177      - growth vertically (and not laterally) if iceFrac == iceMaskMax
178      - melt only laterally if hIce < hThinIce (as the comments say)
179      and in thsice_extend.F:
180      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
181      - start to form ice as soon as the minimum ice-volume is reachable.
182     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
183      and cpl_aim+ocn
184    o pkg/kpp
185     - move computation of surface related input fields to KPP into a new
186       subroutine kpp_forcing_surf.F
187     - remove wrong (within bi,bj loops) EXCH calls.
188     - little cleaning (add argument myThid in last position, cvs header ...)
189     - for now, fix conservation problem by exchanging KPPviscAz (may not
190       be the best fix)
191    o pkg/seaice
192     - check for inconsistent evp parameter/cpp-flag combination
193     - remove leftover errIO flat for obsolete name list error handling
194    o OpenAD
195     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
196    
197    checkpoint59a
198    o pkg/seaice: some parameter clarifications and a little bit of clean up
199    o pkg/thsice: rename run-time parameters:
200       himin       -> hIceMin
201       himin0      -> hThinIce
202       hihig       -> hThickIce
203       i0          -> i0swFrac
204       transCoef   -> bMeltCoef
205       frac_energy -> fracMelting
206      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
207       with default values (for now) that do not change the results.
208      remove old version of thsice vars advection in pkg/seaice.
209    o in FFIELDS.h:
210      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
211      - make pLoad & sIceLoad always available (but still only used if
212         ATMOSPHERIC_LOADING is #define).
213    o pkg/kpp: replaced _KPP_RL with _RL
214    o bug fixes for vertical diffusivity computations when both KPP and
215        3D diffusivity arrays are used.
216    o pkg/seaice: fix bug in evp solver, while doing that
217      - change (improve?) discretization of stress computations for both
218        cgrid-lsr and evp solver
219      - add a new routine to compute strain rates
220      - the above changes lab_sea results
221      - add no slip conditions for evp solver (off by default), lsr-version
222        may follow
223      - fix exchange for shear at Z-points (does not change lab_sea)
224      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
225        (to force the user to pick a time step since there is not "safe" way
226        of choosing it)
227      - add principal stress diagnostics
228      - rearrange fields for evp a little to avoid having to call a: too many
229        exchanges and b: exchanges for stress trensor components which we do
230        not have.
231      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
232        of evp, complete rewrite for lsr case (latter is does not yet work
233        in all cases)
234    o pkg/kpp: add code to have mixing in shelf ice caverns
235      - add myThid to all kpp routines (long overdue)
236    
237    checkpoint59
238    o pkg/exf:
239      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
240        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
241      - move exf header files from lower_case.h to UPPER_CASE.h ;
242        add missing cvs Header & Name
243      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
244      - add namelist param. selectStressGridPosition, exf_monFreq
245      - retire many _CLIM routines, and remove data.exf_clim
246        + params moved to data.exf
247        + climsst, climsss now handled by exf_set_gen, i.e.
248          climss?period=0 refers to constant field,
249          climss?period=-12 to monthly forcing
250      - split up namelists in data.exf
251    o pkg/seaice:
252      - remove seaice_exch and seaice_exch_uv
253      - remove superfluous exchange of theta
254      - add myThid to seaice_budget_ocean/ice
255      - add new interface for atmospheric wind forcing (C-grid only)
256        + new routine
257        + two new field (taux, tauy for stress over ice)
258        + removed one global field (DAIRN) for C-grid case only
259    o pkg/thsise
260      - 2nd set of modifs for thsice adjoint in conjunction with exf
261    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
262    
263    checkpoint58y_post
264    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
265      vertical diffusivity, similar to that in MOM4; turned on using
266      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
267      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
268    o Added capability for 3D specification of background vertical diffusion
269      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
270      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
271      "data" file that contains the 3D vertical diffusivity coefficients.
272    o ice dynamics (pkg/seaice) with thsice thermodynamics:
273      - add code within pkg thsice to advect & diffuse sea-ice fields
274      similar to (and will replace) what has been added in  seaice_advdiff.F,
275      but: - conserving Mass, Heat & Salt.
276           - better when using non-linear advection scheme (not yet fully tested)
277           - can also be used in atmospheric set-up (for now, only the diffusion).
278    
279    checkpoint58x_post
280    o IO option for global-file compact format:
281      - add options when generating topology (utils/exch2/matlab-topology-generator)
282      - add I/O capability (pkg/mdsio).
283      - adapt utils/matlab/rdmds.m to read this format.
284      for now long-line format not yet supported by pkg/mdsio (& exch2).
285    o shelfice: add a few diagnostics
286    
287    checkpoint58w_post
288    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
289      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
290      (and replace horiVertRatio in NH code).
291      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
292                         and tutorial_plume_on_slope (sensitive to truncation)
293    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
294      directly to drive seaice model (C-grid only)
295    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
296     - reintroduce computation of wind from stress,
297     - compute tau (in exf_bulkformulae.F) from windstress averaged to
298       mass points to avoid tau = 0
299     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
300    o rdmnc.m: make it work with "global" files created with gluemnc
301    o rdmnc.m : some improvements in dealing with singleton dimension
302      (tested on all testreport mnc output files).
303    o genmake2: disable pkg/profiles if netcdf test fails.
304    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
305    o move call to cal_readparms up to make calendar parameters/variable available
306      to all packages
307    
308    checkpoint58v_post
309    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
310      useDynP_inEos_Zc tested.
311    o pkg/exf: changes to properly interpolate/mask/scale initial fields
312    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
313      and portions thereof.  See read_cs.txt for description and examples.
314    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
315      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
316      following the great-circle arc between those 2 points.
317    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
318      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
319    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
320     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
321     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
322     - still needs work (not working with some options ; efficiency to improve)
323       and serious testing.
324     - use this scheme for temperature & salinity in 2 advection test exp.:
325       advect_xy & advect_xz, respectively.
326    
327    checkpoint58u_post
328    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
329    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
330    o testreport: add option "-skipdir" to skip some test.
331    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
332      momentum calculation.
333    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
334    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
335      remove checkpoint.F and the_correction_step.F (no longer used);
336      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
337    o add option (linFSConserveTr) to correct for tracer source/sink due to
338      Linear Free surface
339    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
340    o pkg/thsice: fix reading mnc-pickups
341    
342    checkpoint58t_post
343    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
344    o pkg/mdsio:
345     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
346       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
347       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
348     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
349     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
350       either MDS_READ_FIELD or MDS_WRITE_FIELD )
351     - new S/R (to replace MDSWRITEMETA), which allows to write more
352       informations (variable names, time ...) to meta files.
353     - modify rdmds.m to give back the meta file content.
354    o pkg/diagnostics: change vertical interpolation to be safer, and more
355       flexible (define p-levels to interpolate to in data.diagnostics);
356      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
357       diagnostic pointer.
358    o pkg/seaice: more cleaning up of seaice_growth, added many comments
359    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
360    o fix multi-category seaice:
361     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
362       SEAICE_MULTICATEGORY
363     - fix short wave heat flux
364    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
365       and allow to use EVP solver. Change forward lab_sea: test both EVP
366       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
367    o Initial check-in of lab_sea adjoint
368      (very similar to natl_box_adjoint/code_seaice)
369      * used C-grid and EVP solver
370      * used KPP, GM/Redi
371      * uses inAdExact=.TRUE.
372      * gradient checks fail for both ADM and TLM
373        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
374        f.d. gradients actually seem more problematic than ADM, TLM gradients;
375        issue is related to forward mismatch between g77 an ifort
376    o pkg/seaice: overhaul of thermodynamics
377     - growth.F and groatb.F are replaced by new routine seaice_growth.F
378     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
379     - move a few global fields out of SEAICE.h into seaice_growth.F and
380       make them 2D (FICE/QNETO/ ...)
381     - remove FO (it is the same as QNETO)
382     - introduce a few local fields to avoid modifying external fields such
383       as atemp, etc.
384    
385    checkpoint58s_post
386    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
387      changed exf_set_gen.F so that
388        genperiod=0 means input file is one time-constant field and
389        genperiod=-12 means input file contains 12 monthly means
390    o CG2D: use pre-computed solver main-diagonal (stored in common block);
391      this affects truncation error ; generate new output file for exp. which
392      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
393        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
394        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
395        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
396        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
397        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
398    o start implementation of deep-atmosphere and anelastic formulation
399    o verification: remove 2nd copy of input files and use script "prepare_run"
400      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
401    o mom_common/vecinv/fluxform: fix a few initialisation isssues
402    o profiles: fix for multithreaded case
403    
404    o diagnostics: rename few diags:
405      s/'PRESSURE'/'RCENTER '/g
406      s/'TICE    '/'oceFreez'/g
407      s/'TAUX    '/'oceTAUX '/g
408      s/'TAUY    '/'oceTAUY '/g
409      s/'SWFLUX  '/'oceQsw  '/g
410      s/DIFx/DFxE/g
411      s/DIFy/DFyE/g
412      and add few ocean-forcing diagnostics:
413      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
414    o modifications to pkg/seaice/growth.F and budget.F, which change results of
415      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
416      as actual snow thickness.  It now refers everywhere to effective snow
417      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
418    
419    checkpoint58r_post
420    o modifications to pkg/seaice/growth.F, which change results of
421      lab_sea experiment: fixes pertain to melting snow over open water, to
422      masking EVAP under sea ice, and to using the correct AREA variable for
423      computations of EVAP, PRECIP, HSNOW, and GHEFF
424    o add ability to read bathy, salt, and theta using MNC (off by def)
425    o add flooding algorithm and advection of HSNOW for pkg/seaice;
426      both are turned off by default and do no change any results
427    o seaice advection with pkg/thsice: a step toward the use of non-linear
428      advection scheme, but #ifdef or commented out for now (requires more EXCH).
429    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
430      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
431      in natl_box (affects results @ truncation level: update output.txt)
432    o multi-threading and IO:
433      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
434      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
435        (needed to work with SingleCpuIO): tested in all verif. exp.
436    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
437      affects the results (but none of the verification test uses this scheme).
438    o Adding some pkg/diagnostics capability to pkg/seaice
439      (will certainly be subject to changes)
440    o ctrl: adding new control variables:
441      lwflux, lwdown, evap, snowprecip, apressure, runoff
442    
443    checkpoint58q_post
444    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
445      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
446      high_res_cube configuration by 4% on Columbia.
447    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
448      add (in global_with_exf/code) a version of EXF_INTERP_READ without
449      dynamical allocation (seems to work in multi-threaded).
450    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
451      single CPU io) so that TAF does not have to see EESUPPORT.h
452    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
453    
454    checkpoint58p_post
455    o obcs: stop if obcs is used with useCDscheme = .true.
456    o shelfice:
457     - fix a sign error so that no slip at shelfice interface works
458     - remove stop for combination non-hydrostatic code and shelfice. That does
459       not mean, that the results are correct, but at least they are numerically
460       stable
461    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
462    o added adjoint exch routined for all exch*3d* routines
463      and updated flow directives
464    
465    checkpoint58o_post
466    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
467      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
468    o change controling S/R for writing pickup file (new S/R do_write_pickup)
469      and clean-up reading/writing of pickup files.
470    o fix local version of read/write pickup (NH part) in rotating_tank/code
471    o simplify EXCH interface:
472     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
473     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
474    o added the regrid package
475    o shelfice:
476     - add a simple boundary layer scheme to reduce noise
477     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
478    
479    checkpoint58n_post
480    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
481       local variable (not in common block).
482    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
483      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
484      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
485        to work with SingleCpuIO.
486    o add "_d 0" to real constant of pkg/cfc subroutines ;
487       update exp. cfc_exemple & tutorial_cfc_offline output files.
488    o multi-threading and IO:
489      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
490        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
491      - barrier before and after reading.
492      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
493      - avoid using MDS_WRITELOCAL for LAND pkg output.
494      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
495        common-block variables ; Allows multi-threading with master-thread IO.
496    o change default MAX_NO_THREADS from 32 to 4 ;
497      and stop cleanly when MAX_NO_THREADS is too small.
498    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
499    
500    checkpoint58m_post
501    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
502       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
503    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
504       keep global_ocean.90x40x15 (for AD testing) with former secondary test
505       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
506    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
507        add MITgcm_tutorials (= code + all the tutorials)
508    o ecco, option to compute cost for total ssh (mean+anom)
509    o consistent with addition of ptracer and ssh in pkg/profiles
510    o profiles: adding ptracer and ssh
511    o testreport: change multi-test output-file name
512      (from output.txt.{name} to output.{name}.txt)
513    o profiles: now ok for mutli-tiles case
514    o seaice: add 4 parameters for different advection schemes for area,
515      (effective) seaice thickness, enthalphy, and snow height. Their default
516      is the standard parameter SEAICEadvScheme
517    o calc_gw:
518     - add cosFacU in zonal viscous flux (harmonic.visc.).
519     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
520       of tutorial_plume_on_slope.
521    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
522    o calc_gw: true flux-form, account for horizontal grid spacing.
523      update rotating_tank results, but not plume_on_slope (affected at
524      truncation level, 11 digits).
525    
526    checkpoint58l_post
527    o calc_gw:
528     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
529     - remove side-drag for now (need to fix it); update plume_on_slope results.
530     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
531    o commit code to make SST/SSS weights spatially variable
532      (based on either variable in-situ or variable initial T/S weights)
533    o pkg/ecco:
534      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
535        now based on horizontally varying weights wthetaLev, wsaltLev
536      * cost_averagesflags now returns year indices in addition to day, month
537      * sflux balance is performed on annual basis
538        (sflxumm, sfluxmm2, bal_sfluxmm)
539      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
540        including separate counting and multipliers
541    o pkg/rbcs
542      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
543    
544    checkpoint58k_post
545    o testreport:
546     - always build in dir. "build" (if not there, mkdir build instead of building
547       & running in input)
548     - run in dir run (if it exists), in build otherwise.
549     - call prepare_run (if input/prepare_run exists)
550     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
551    o pkg/exf modifications to interpolation and rotation routines for more
552       reasonable treatment of North Pole singularity: for tracers North Pole
553       value is set to northernmost zonal-mean value, for zonal velocity it is
554       set to zero, and for meridional velocity it is set to northernmost value.
555    o pkg/exf/exf_check_range.F
556     - add tile index to diagnostics and move stop statement to the very
557       end of the routine.
558    o pkg/diagnostics: (diagnostics_main_init.F)
559      define title of isomorphic variables according to the current config.
560    o pkg/thsice with pkg/seaice dynamics:
561    - fix domain of computation (interior only, required for exf) and do exchanges
562    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
563    o towards a standard way of dealing with multi-threading in MONITOR
564      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
565    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
566       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
567    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
568    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
569    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
570       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
571    o tracer advection:
572     - clean-up and simplify calc_common_factors.F
573     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
574       advection subroutine (but still not used within DST advection S/R)
575    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
576    
577    checkpoint58j_post
578    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
579      from file (collects calls previously in FORWARD_STEP)
580    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
581    o adjoint store dir. adjusted accordingly
582    o genmake2
583      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
584    
585    checkpoint58i_post
586    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
587      on wind stress (SEAICEstressFactor defaults to 1.)
588    o Total number of Timers is finite (<=40): comment out 2 non-essential one
589      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
590    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
591      on CS-grid: no longer loosing mass.
592    o exf & curvilinear-grid: no longer modify longitude xC & xG.
593    o pkg/ggl90: fix sloppy output and fix a bug
594    o pkg/seaice: added SEAICEuseEVPpickup parameter
595      - Set to false in order to start EVP solver with
596        non-EVP pickup files when using SEAICEuseEVP
597      - fix sign error in diffusion in seaice_calc_rhs
598    
599    checkpoint58h_post
600    * Modifications for bottom topography control
601      o replace hFacC by _hFacC at various places
602      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
603      o add non-self-adjoint cg2d_nsa
604      o update autodiff support routines
605      o re-initialise hfac after ctrl_depth_ini
606      o works for 5x5 box, doesnt work for global_ocean.90x40x15
607    * Adding verification for 5x5 box (4-layer) bottom topography control
608    
609    checkpoint58g_post
610    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
611       used for mean seasonal cycle, mean diurnal cycle); add an example
612       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
613    o pkg/ggl90:
614      - add parameter (minimum surface kinetic energy)
615      - fix bug (avoiding division by zero)
616    o couple pkg/thsice to pkg/seaice:
617      - modify advection in seaice to accomodate new scalar fields to be advected
618      - only muliDimAdection scheme work with seaice/thsice
619      - mapping of thsice-variables to seaice-variables, back and forth
620      - does not break the verification experiments, but does not give the
621        desired results either
622    o pkg/seaice
623      - make (default) second order advection a bit less confusing?
624    
625    checkpoint58f_post
626    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
627      to pkg/seaice):
628      - new routines thsice_map_exf and thsice_get_exf provide the interface
629      - add an additional formal parameter to thsice_solve4temp
630    o pkg/exf:
631      - add new fields wspeed, snowprecip (to be able to couple to thsice)
632      - correct Stefan-Boltzmann constant
633      - new parameter for longwave surface emittance
634      - separate some stuff from exf_bulkformulae into new routines  
635        exf_radiation, exf_wind
636      - add new parameters and constants: longwave emissivity for ocean, ice
637        and snow, evaporation parameters over ice
638      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
639        either wind from stress or stress from wind
640    o pkg/thSIce:
641    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
642    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
643       and THSICE_CALC_THICKN
644    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
645    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
646      to make debugging easier.
647    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
648    o pkg/bulk_force:
649      - clean-up comments and parameters ;
650      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
651    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
652      generate new output for test-experiment: aim.5l_cs.thSI
653    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
654      testreport accordingly
655    
656    checkpoint58e_post
657    o SEAICE_CGRID adjoint done
658    o R_STAR adjoint implemented.
659      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
660      * need to sort out init. of h0facc, etc.
661    o Make pkg/profile fully independent of ecco,cost, etc. stuff
662      to be able to use it in pure forward.
663    
664    checkpoint58d_post
665    o upgrade simple test-experiment to tutorial example:
666     step.1: duplicate the experiment and (step.2) will remove the old copy.
667      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
668      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
669      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
670      tutorial_global_oce_biogeo    <- copy of dic_example
671      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
672      tutorial_plume_on_slope       <- copy of plume_on_slope
673      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
674      tutorial_global_oce_optim     <- empty for now (David ?)
675      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
676     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
677    o correct a sign problem in cost_scat.F
678    o obcs and ptracers: fix boundary conditions for advections schemes
679      with larger stencil
680    o thsice adjoint: start
681    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
682      completeness
683    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
684      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
685    o ptracers adjoint:
686      * avoid extensive recomputatations
687      * fix missing re-init. of gptr (missed by TAF)
688    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
689      me to turn off the excessive output to STDOUT that this package produces
690    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
691      and add those terms in Vector-Invariant formulation.
692    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
693      if the control period (xx_hfluxperiod etc) is 0
694    o in profiles pkg, clean routines and fix details
695    o in ecco pkg, reading ssh data:
696      fix problem in case the model does not start at iter0=0
697    o fix mnc-pickup/restart for ptracers
698    o new package prifiles:
699      code to compute profile-based cost by Gael Forget
700      (modifs in ecco, ctrl, autodiff)
701    o Benign bug fix in initialization (spotted by M. Mazloff) of
702      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
703    
704    checkpoint58c_post
705    o adjoint: finish NLFS adjoint and provide reference output in
706      verification/global_ocean.90x40x15/results_ad_nlfs
707    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
708      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
709      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
710      with SEAICE_CGRID defined.
711    o move calendarDumps from "data" to "data.cal" and clean-up the code
712      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
713    o add useEXF & useCAL flags (for now, set in hard-coded way)
714    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
715      (were missing in NH mode, and wrong in quasihydrostatic mode).
716      waiting for Chris updated version of calc_gw to add those CALLs.
717    o fix bug in quasihydrostatic S/R ;
718      add a test for this option: global_ocean.90x40x15.qshyd
719    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
720      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
721    o add on/off flag useOffLine for package OFFLINE
722    o seaice:
723      - modify advection so that it works also on the C-grid
724      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
725        problem in multi-tile runs with C-grid
726      - add flags for clipping ice velocities and/or masking solver forcing
727      - fix drag (ocean on ice) formulation and a bug that caused noise in the
728        C-grid solver
729      - added a few comments to seaice_diffusion.F
730      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
731        are now exclusive)
732      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
733        required re-ordering the code a little:
734       + make DAIRN global variable (defined in SEAICE)
735       + move computation of the viscosities eta and zeta into a new separate
736         routine (because I need to recompute them in seaice_ocean_stress.F)
737    
738    checkpoint58b_post
739    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
740      update output.txt of exp. aim.5l_cs.thSI
741    o various mnc cleanups and improvements:
742      + shrink lookup tables by factor of ~4
743      + better error reporting when running out of lookup space
744      + able to handle longer path/file names (up to 500 chars)
745    o adjoint:
746      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
747      - TBD: "hidden" mom_vecinv recomp. in dynamics
748    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
749     (allow to differentiate between forcing components using new integer flags:
750      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
751     and add new flag to put Dissipation tendency out of Adams-Bashforth.
752    o ecco
753      - enable trend removal from SSH anomaly obs.
754    o adjoint
755      - a fix for PmEpR when #undef EXACT_CONSERV
756      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
757      - try to fix "hidden" recomp. in forward_step for NLFS
758        (NLFS seems broken sometimes after I checked it in)
759    o seaice:
760     - add c-grid version of the dynamic solver:
761       + three new routines that are the c-grid substitute lsr, dynsolver
762         and ostres
763       + put a few fields that were local to dynsolver into global common
764         blocks, so that I can move the computation of stresses etc into
765         seaice_lsr (saves coding but may break the adjoint).
766     - replace more hardwired parameters by runtime parameters
767     - add ice masks that mask the rhs of the implicit solvers where there
768       is no ice (commented out in seaice_dynsolver, because i am not sure
769       if this works properly), eventually this should replace the clipping
770       of ice velocities in seaice_dynsolver to +/-40cm/s.
771    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
772      include it only where its needed
773    o move balancing of fluxes before the call of external_forcing_surf
774    o seaice:
775      - correct units of turning angles (now they are really in degrees)
776      - move computation of GWATX/Y out of main routine into dynsolver
777      - initialize GWATX/Y in seaice_init
778    o Apply mask on Fresh-Water flux (needed for SSH forcing).
779      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
780    o seaice: add runtime flags for turning angles (default to zero)
781    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
782      and trend from exf forcing and ctrl control adjustments
783    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
784      (since checkpoint57x_post)
785  o change the default rotation period to 86164.s = the Earth rotation  o change the default rotation period to 86164.s = the Earth rotation
786  o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)  o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
787    and based on a reference stratification. Tested within hs94.cs-32x32x5.    and based on a reference stratification. Tested within hs94.cs-32x32x5.

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