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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.824 by mlosch, Wed May 30 09:27:05 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 pkg/obcs:
8  o moved ptracer ctrl index 17 -> 32   - bug fix for balance code
9    o pkg/seaice:
10      - allow values of SEAICE_elaticParm > 1
11      - make lsr boundary conditions free slip (by default)
12      - add code for no slip boundary conditions for lsr
13      - set minimum of zeta to zero (and not 4e8) (changes results)
14    o change calculation of Visbeck K:
15      - no longer depend on tapering scheme; instead, compute slope (limited
16        by GM_maxSlope). this is equivalent to what was comuted before with
17        clipping or linear tappering.
18      - fix vertical averaging (wrong by 1 level)
19      - leave the old version (but will not be maintained) within
20        #ifdef OLD_VISBECK_CALC / #endif
21    o change error catch in calc_r_star to improve vectorization
22    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
23      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
24    
25    checkpoint59b
26    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
27      - export/import (between ocean & coupler) fields needed for ocean DIC.
28    o pkg/seaice:
29      - get rid of three more exchanges seaice_calc_viscosities (required
30        different loop boundaries in seaice_lsr and seaice_ocean_stress)
31      - bug fix in seaice_ocean_stress (update of lab_sea required)
32      - reduce loop boundaries to necessary minimum also in seaice_evp
33      - go back to the old way of computing deltaC/Z as the adjoint likes that
34        better
35    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
36      passive tracer to an Age Tracer) + update output.txt
37    o pkg/exf:
38      - implement A-grid / C-grid selection for wind-stress input files.
39      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
40      for now, in exf_bulk_largeyeager04.F only :
41      - change implementation for case where windspeed + 2. components wind-stress
42        are read-in. AND use rhoConstFresh to convert evap.
43    o pkg/seaice:
44      - use correct EXCH_UV for wind-forcing (on A-grid).
45      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
46        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
47    o pkg/exf:
48      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
49      EXF_INTERPOLATION:
50      - merge global_with_exf/code version of exf_interp_read.F
51        to the main code ;
52      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
53        reading the file ; Important: This options needs to be defined to recover
54        previous code.
55        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
56      - no longer loose real*8 precision along the way when using exf_iprec=64.
57    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
58      - change discretisation of evp-solver in order to avoid another exchange
59        (changes lab_sea) and clean up a little
60      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
61        help the adjoint (this also changes the results slightly)
62      - add a few "_d 0" where they had been missing in seaice_evp.F
63      - cleaning up: remove unused seaice_calc_rhs.F
64    o pkg/exf: some cleaning-up:
65      - change various "constants" into runtime parameters
66      - cleaned-up Large&Yeager04 routine which should eventually
67        replace exf_bulkformulae.F (changed names of S/R and CPP)
68        and merged various ALLOW_ATM_WIND options
69     only used with thsice pkg (in thsice_get_exf.F):
70      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
71        which are used when useStabilityFct_overIce=TRUE (= the default)
72      - change default values of ice & snow emissivity and scale downward LW
73        by ice & snow emissivity.
74    o pkg/thsice:
75     fix few little problems, in thsice_calc_thickn.F:
76      - growth vertically (and not laterally) if iceFrac == iceMaskMax
77      - melt laterally only if hIce < hThinIce (as the comments say)
78      and in thsice_extend.F:
79      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
80      - start to form ice as soon as the minimum ice-volume is reachable.
81     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
82      and cpl_aim+ocn
83    o pkg/kpp
84     - move computation of surface related input fields to KPP into a new
85       subroutine kpp_forcing_surf.F
86     - remove wrong (within bi,bj loops) EXCH calls.
87     - little cleaning (add argument myThid in last position, cvs header ...)
88     - for now, fix conservation problem by exchanging KPPviscAz (may not
89       be the best fix)
90    o pkg/seaice
91     - check for inconsistent evp parameter/cpp-flag combination
92     - remove leftover errIO flat for obsolete name list error handling
93    o OpenAD
94     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
95    
96    checkpoint59a
97    o pkg/seaice: some parameter clarifications and a little bit of clean up
98    o pkg/thsice: rename run-time parameters:
99       himin       -> hIceMin
100       himin0      -> hThinIce
101       hihig       -> hThickIce
102       i0          -> i0swFrac
103       transCoef   -> bMeltCoef
104       frac_energy -> fracMelting
105      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
106       with default values (for now) that do not change the results.
107      remove old version of thsice vars advection in pkg/seaice.
108    o in FFIELDS.h:
109      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
110      - make pLoad & sIceLoad always available (but still only used if
111         ATMOSPHERIC_LOADING is #define).
112    o pkg/kpp: replaced _KPP_RL with _RL
113    o bug fixes for vertical diffusivity computations when both KPP and
114        3D diffusivity arrays are used.
115    o pkg/seaice: fix bug in evp solver, while doing that
116      - change (improve?) discretization of stress computations for both
117        cgrid-lsr and evp solver
118      - add a new routine to compute strain rates
119      - the above changes lab_sea results
120      - add no slip conditions for evp solver (off by default), lsr-version
121        may follow
122      - fix exchange for shear at Z-points (does not change lab_sea)
123      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
124        (to force the user to pick a time step since there is not "safe" way
125        of choosing it)
126      - add principal stress diagnostics
127      - rearrange fields for evp a little to avoid having to call a: too many
128        exchanges and b: exchanges for stress trensor components which we do
129        not have.
130      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
131        of evp, complete rewrite for lsr case (latter is does not yet work
132        in all cases)
133    o pkg/kpp: add code to have mixing in shelf ice caverns
134      - add myThid to all kpp routines (long overdue)
135    
136    checkpoint59
137    o pkg/exf:
138      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
139        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
140      - move exf header files from lower_case.h to UPPER_CASE.h ;
141        add missing cvs Header & Name
142      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
143      - add namelist param. selectStressGridPosition, exf_monFreq
144      - retire many _CLIM routines, and remove data.exf_clim
145        + params moved to data.exf
146        + climsst, climsss now handled by exf_set_gen, i.e.
147          climss?period=0 refers to constant field,
148          climss?period=-12 to monthly forcing
149      - split up namelists in data.exf
150    o pkg/seaice:
151      - remove seaice_exch and seaice_exch_uv
152      - remove superfluous exchange of theta
153      - add myThid to seaice_budget_ocean/ice
154      - add new interface for atmospheric wind forcing (C-grid only)
155        + new routine
156        + two new field (taux, tauy for stress over ice)
157        + removed one global field (DAIRN) for C-grid case only
158    o pkg/thsise
159      - 2nd set of modifs for thsice adjoint in conjunction with exf
160    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
161    
162    checkpoint58y_post
163    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
164      vertical diffusivity, similar to that in MOM4; turned on using
165      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
166      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
167    o Added capability for 3D specification of background vertical diffusion
168      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
169      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
170      "data" file that contains the 3D vertical diffusivity coefficients.
171    o ice dynamics (pkg/seaice) with thsice thermodynamics:
172      - add code within pkg thsice to advect & diffuse sea-ice fields
173      similar to (and will replace) what has been added in  seaice_advdiff.F,
174      but: - conserving Mass, Heat & Salt.
175           - better when using non-linear advection scheme (not yet fully tested)
176           - can also be used in atmospheric set-up (for now, only the diffusion).
177    
178    checkpoint58x_post
179    o IO option for global-file compact format:
180      - add options when generating topology (utils/exch2/matlab-topology-generator)
181      - add I/O capability (pkg/mdsio).
182      - adapt utils/matlab/rdmds.m to read this format.
183      for now long-line format not yet supported by pkg/mdsio (& exch2).
184    o shelfice: add a few diagnostics
185    
186    checkpoint58w_post
187    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
188      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
189      (and replace horiVertRatio in NH code).
190      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
191                         and tutorial_plume_on_slope (sensitive to truncation)
192    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
193      directly to drive seaice model (C-grid only)
194    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
195     - reintroduce computation of wind from stress,
196     - compute tau (in exf_bulkformulae.F) from windstress averaged to
197       mass points to avoid tau = 0
198     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
199    o rdmnc.m: make it work with "global" files created with gluemnc
200    o rdmnc.m : some improvements in dealing with singleton dimension
201      (tested on all testreport mnc output files).
202    o genmake2: disable pkg/profiles if netcdf test fails.
203    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
204    o move call to cal_readparms up to make calendar parameters/variable available
205      to all packages
206    
207    checkpoint58v_post
208    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
209      useDynP_inEos_Zc tested.
210    o pkg/exf: changes to properly interpolate/mask/scale initial fields
211    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
212      and portions thereof.  See read_cs.txt for description and examples.
213    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
214      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
215      following the great-circle arc between those 2 points.
216    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
217      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
218    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
219     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
220     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
221     - still needs work (not working with some options ; efficiency to improve)
222       and serious testing.
223     - use this scheme for temperature & salinity in 2 advection test exp.:
224       advect_xy & advect_xz, respectively.
225    
226    checkpoint58u_post
227    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
228    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
229    o testreport: add option "-skipdir" to skip some test.
230    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
231      momentum calculation.
232    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
233    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
234      remove checkpoint.F and the_correction_step.F (no longer used);
235      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
236    o add option (linFSConserveTr) to correct for tracer source/sink due to
237      Linear Free surface
238    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
239    o pkg/thsice: fix reading mnc-pickups
240    
241    checkpoint58t_post
242    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
243    o pkg/mdsio:
244     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
245       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
246       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
247     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
248     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
249       either MDS_READ_FIELD or MDS_WRITE_FIELD )
250     - new S/R (to replace MDSWRITEMETA), which allows to write more
251       informations (variable names, time ...) to meta files.
252     - modify rdmds.m to give back the meta file content.
253    o pkg/diagnostics: change vertical interpolation to be safer, and more
254       flexible (define p-levels to interpolate to in data.diagnostics);
255      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
256       diagnostic pointer.
257    o pkg/seaice: more cleaning up of seaice_growth, added many comments
258    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
259    o fix multi-category seaice:
260     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
261       SEAICE_MULTICATEGORY
262     - fix short wave heat flux
263    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
264       and allow to use EVP solver. Change forward lab_sea: test both EVP
265       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
266    o Initial check-in of lab_sea adjoint
267      (very similar to natl_box_adjoint/code_seaice)
268      * used C-grid and EVP solver
269      * used KPP, GM/Redi
270      * uses inAdExact=.TRUE.
271      * gradient checks fail for both ADM and TLM
272        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
273        f.d. gradients actually seem more problematic than ADM, TLM gradients;
274        issue is related to forward mismatch between g77 an ifort
275    o pkg/seaice: overhaul of thermodynamics
276     - growth.F and groatb.F are replaced by new routine seaice_growth.F
277     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
278     - move a few global fields out of SEAICE.h into seaice_growth.F and
279       make them 2D (FICE/QNETO/ ...)
280     - remove FO (it is the same as QNETO)
281     - introduce a few local fields to avoid modifying external fields such
282       as atemp, etc.
283    
284    checkpoint58s_post
285    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
286      changed exf_set_gen.F so that
287        genperiod=0 means input file is one time-constant field and
288        genperiod=-12 means input file contains 12 monthly means
289    o CG2D: use pre-computed solver main-diagonal (stored in common block);
290      this affects truncation error ; generate new output file for exp. which
291      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
292        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
293        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
294        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
295        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
296        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
297    o start implementation of deep-atmosphere and anelastic formulation
298    o verification: remove 2nd copy of input files and use script "prepare_run"
299      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
300    o mom_common/vecinv/fluxform: fix a few initialisation isssues
301    o profiles: fix for multithreaded case
302    
303    o diagnostics: rename few diags:
304      s/'PRESSURE'/'RCENTER '/g
305      s/'TICE    '/'oceFreez'/g
306      s/'TAUX    '/'oceTAUX '/g
307      s/'TAUY    '/'oceTAUY '/g
308      s/'SWFLUX  '/'oceQsw  '/g
309      s/DIFx/DFxE/g
310      s/DIFy/DFyE/g
311      and add few ocean-forcing diagnostics:
312      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
313    o modifications to pkg/seaice/growth.F and budget.F, which change results of
314      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
315      as actual snow thickness.  It now refers everywhere to effective snow
316      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
317    
318    checkpoint58r_post
319    o modifications to pkg/seaice/growth.F, which change results of
320      lab_sea experiment: fixes pertain to melting snow over open water, to
321      masking EVAP under sea ice, and to using the correct AREA variable for
322      computations of EVAP, PRECIP, HSNOW, and GHEFF
323    o add ability to read bathy, salt, and theta using MNC (off by def)
324    o add flooding algorithm and advection of HSNOW for pkg/seaice;
325      both are turned off by default and do no change any results
326    o seaice advection with pkg/thsice: a step toward the use of non-linear
327      advection scheme, but #ifdef or commented out for now (requires more EXCH).
328    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
329      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
330      in natl_box (affects results @ truncation level: update output.txt)
331    o multi-threading and IO:
332      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
333      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
334        (needed to work with SingleCpuIO): tested in all verif. exp.
335    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
336      affects the results (but none of the verification test uses this scheme).
337    o Adding some pkg/diagnostics capability to pkg/seaice
338      (will certainly be subject to changes)
339    o ctrl: adding new control variables:
340      lwflux, lwdown, evap, snowprecip, apressure, runoff
341    
342    checkpoint58q_post
343    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
344      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
345      high_res_cube configuration by 4% on Columbia.
346    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
347      add (in global_with_exf/code) a version of EXF_INTERP_READ without
348      dynamical allocation (seems to work in multi-threaded).
349    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
350      single CPU io) so that TAF does not have to see EESUPPORT.h
351    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
352    
353    checkpoint58p_post
354    o obcs: stop if obcs is used with useCDscheme = .true.
355    o shelfice:
356     - fix a sign error so that no slip at shelfice interface works
357     - remove stop for combination non-hydrostatic code and shelfice. That does
358       not mean, that the results are correct, but at least they are numerically
359       stable
360    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
361    o added adjoint exch routined for all exch*3d* routines
362      and updated flow directives
363    
364    checkpoint58o_post
365    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
366      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
367    o change controling S/R for writing pickup file (new S/R do_write_pickup)
368      and clean-up reading/writing of pickup files.
369    o fix local version of read/write pickup (NH part) in rotating_tank/code
370    o simplify EXCH interface:
371     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
372     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
373    o added the regrid package
374    o shelfice:
375     - add a simple boundary layer scheme to reduce noise
376     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
377    
378    checkpoint58n_post
379    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
380       local variable (not in common block).
381    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
382      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
383      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
384        to work with SingleCpuIO.
385    o add "_d 0" to real constant of pkg/cfc subroutines ;
386       update exp. cfc_exemple & tutorial_cfc_offline output files.
387    o multi-threading and IO:
388      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
389        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
390      - barrier before and after reading.
391      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
392      - avoid using MDS_WRITELOCAL for LAND pkg output.
393      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
394        common-block variables ; Allows multi-threading with master-thread IO.
395    o change default MAX_NO_THREADS from 32 to 4 ;
396      and stop cleanly when MAX_NO_THREADS is too small.
397    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
398    
399    checkpoint58m_post
400    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
401       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
402    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
403       keep global_ocean.90x40x15 (for AD testing) with former secondary test
404       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
405    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
406        add MITgcm_tutorials (= code + all the tutorials)
407    o ecco, option to compute cost for total ssh (mean+anom)
408    o consistent with addition of ptracer and ssh in pkg/profiles
409    o profiles: adding ptracer and ssh
410    o testreport: change multi-test output-file name
411      (from output.txt.{name} to output.{name}.txt)
412    o profiles: now ok for mutli-tiles case
413    o seaice: add 4 parameters for different advection schemes for area,
414      (effective) seaice thickness, enthalphy, and snow height. Their default
415      is the standard parameter SEAICEadvScheme
416    o calc_gw:
417     - add cosFacU in zonal viscous flux (harmonic.visc.).
418     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
419       of tutorial_plume_on_slope.
420    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
421    o calc_gw: true flux-form, account for horizontal grid spacing.
422      update rotating_tank results, but not plume_on_slope (affected at
423      truncation level, 11 digits).
424    
425    checkpoint58l_post
426    o calc_gw:
427     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
428     - remove side-drag for now (need to fix it); update plume_on_slope results.
429     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
430    o commit code to make SST/SSS weights spatially variable
431      (based on either variable in-situ or variable initial T/S weights)
432    o pkg/ecco:
433      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
434        now based on horizontally varying weights wthetaLev, wsaltLev
435      * cost_averagesflags now returns year indices in addition to day, month
436      * sflux balance is performed on annual basis
437        (sflxumm, sfluxmm2, bal_sfluxmm)
438      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
439        including separate counting and multipliers
440    o pkg/rbcs
441      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
442    
443    checkpoint58k_post
444    o testreport:
445     - always build in dir. "build" (if not there, mkdir build instead of building
446       & running in input)
447     - run in dir run (if it exists), in build otherwise.
448     - call prepare_run (if input/prepare_run exists)
449     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
450    o pkg/exf modifications to interpolation and rotation routines for more
451       reasonable treatment of North Pole singularity: for tracers North Pole
452       value is set to northernmost zonal-mean value, for zonal velocity it is
453       set to zero, and for meridional velocity it is set to northernmost value.
454    o pkg/exf/exf_check_range.F
455     - add tile index to diagnostics and move stop statement to the very
456       end of the routine.
457    o pkg/diagnostics: (diagnostics_main_init.F)
458      define title of isomorphic variables according to the current config.
459    o pkg/thsice with pkg/seaice dynamics:
460    - fix domain of computation (interior only, required for exf) and do exchanges
461    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
462    o towards a standard way of dealing with multi-threading in MONITOR
463      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
464    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
465       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
466    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
467    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
468    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
469       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
470    o tracer advection:
471     - clean-up and simplify calc_common_factors.F
472     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
473       advection subroutine (but still not used within DST advection S/R)
474    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
475    
476    checkpoint58j_post
477    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
478      from file (collects calls previously in FORWARD_STEP)
479    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
480    o adjoint store dir. adjusted accordingly
481    o genmake2
482      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
483    
484    checkpoint58i_post
485    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
486      on wind stress (SEAICEstressFactor defaults to 1.)
487    o Total number of Timers is finite (<=40): comment out 2 non-essential one
488      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
489    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
490      on CS-grid: no longer loosing mass.
491    o exf & curvilinear-grid: no longer modify longitude xC & xG.
492    o pkg/ggl90: fix sloppy output and fix a bug
493    o pkg/seaice: added SEAICEuseEVPpickup parameter
494      - Set to false in order to start EVP solver with
495        non-EVP pickup files when using SEAICEuseEVP
496      - fix sign error in diffusion in seaice_calc_rhs
497    
498    checkpoint58h_post
499    * Modifications for bottom topography control
500      o replace hFacC by _hFacC at various places
501      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
502      o add non-self-adjoint cg2d_nsa
503      o update autodiff support routines
504      o re-initialise hfac after ctrl_depth_ini
505      o works for 5x5 box, doesnt work for global_ocean.90x40x15
506    * Adding verification for 5x5 box (4-layer) bottom topography control
507    
508    checkpoint58g_post
509    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
510       used for mean seasonal cycle, mean diurnal cycle); add an example
511       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
512    o pkg/ggl90:
513      - add parameter (minimum surface kinetic energy)
514      - fix bug (avoiding division by zero)
515    o couple pkg/thsice to pkg/seaice:
516      - modify advection in seaice to accomodate new scalar fields to be advected
517      - only muliDimAdection scheme work with seaice/thsice
518      - mapping of thsice-variables to seaice-variables, back and forth
519      - does not break the verification experiments, but does not give the
520        desired results either
521    o pkg/seaice
522      - make (default) second order advection a bit less confusing?
523    
524    checkpoint58f_post
525    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
526      to pkg/seaice):
527      - new routines thsice_map_exf and thsice_get_exf provide the interface
528      - add an additional formal parameter to thsice_solve4temp
529    o pkg/exf:
530      - add new fields wspeed, snowprecip (to be able to couple to thsice)
531      - correct Stefan-Boltzmann constant
532      - new parameter for longwave surface emittance
533      - separate some stuff from exf_bulkformulae into new routines  
534        exf_radiation, exf_wind
535      - add new parameters and constants: longwave emissivity for ocean, ice
536        and snow, evaporation parameters over ice
537      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
538        either wind from stress or stress from wind
539    o pkg/thSIce:
540    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
541    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
542       and THSICE_CALC_THICKN
543    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
544    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
545      to make debugging easier.
546    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
547    o pkg/bulk_force:
548      - clean-up comments and parameters ;
549      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
550    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
551      generate new output for test-experiment: aim.5l_cs.thSI
552    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
553      testreport accordingly
554    
555    checkpoint58e_post
556    o SEAICE_CGRID adjoint done
557    o R_STAR adjoint implemented.
558      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
559      * need to sort out init. of h0facc, etc.
560    o Make pkg/profile fully independent of ecco,cost, etc. stuff
561      to be able to use it in pure forward.
562    
563    checkpoint58d_post
564    o upgrade simple test-experiment to tutorial example:
565     step.1: duplicate the experiment and (step.2) will remove the old copy.
566      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
567      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
568      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
569      tutorial_global_oce_biogeo    <- copy of dic_example
570      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
571      tutorial_plume_on_slope       <- copy of plume_on_slope
572      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
573      tutorial_global_oce_optim     <- empty for now (David ?)
574      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
575     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
576    o correct a sign problem in cost_scat.F
577    o obcs and ptracers: fix boundary conditions for advections schemes
578      with larger stencil
579    o thsice adjoint: start
580    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
581      completeness
582    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
583      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
584    o ptracers adjoint:
585      * avoid extensive recomputatations
586      * fix missing re-init. of gptr (missed by TAF)
587    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
588      me to turn off the excessive output to STDOUT that this package produces
589    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
590      and add those terms in Vector-Invariant formulation.
591    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
592      if the control period (xx_hfluxperiod etc) is 0
593    o in profiles pkg, clean routines and fix details
594    o in ecco pkg, reading ssh data:
595      fix problem in case the model does not start at iter0=0
596    o fix mnc-pickup/restart for ptracers
597    o new package prifiles:
598      code to compute profile-based cost by Gael Forget
599      (modifs in ecco, ctrl, autodiff)
600    o Benign bug fix in initialization (spotted by M. Mazloff) of
601      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
602    
603    checkpoint58c_post
604    o adjoint: finish NLFS adjoint and provide reference output in
605      verification/global_ocean.90x40x15/results_ad_nlfs
606    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
607      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
608      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
609      with SEAICE_CGRID defined.
610    o move calendarDumps from "data" to "data.cal" and clean-up the code
611      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
612    o add useEXF & useCAL flags (for now, set in hard-coded way)
613    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
614      (were missing in NH mode, and wrong in quasihydrostatic mode).
615      waiting for Chris updated version of calc_gw to add those CALLs.
616    o fix bug in quasihydrostatic S/R ;
617      add a test for this option: global_ocean.90x40x15.qshyd
618    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
619      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
620    o add on/off flag useOffLine for package OFFLINE
621    o seaice:
622      - modify advection so that it works also on the C-grid
623      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
624        problem in multi-tile runs with C-grid
625      - add flags for clipping ice velocities and/or masking solver forcing
626      - fix drag (ocean on ice) formulation and a bug that caused noise in the
627        C-grid solver
628      - added a few comments to seaice_diffusion.F
629      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
630        are now exclusive)
631      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
632        required re-ordering the code a little:
633       + make DAIRN global variable (defined in SEAICE)
634       + move computation of the viscosities eta and zeta into a new separate
635         routine (because I need to recompute them in seaice_ocean_stress.F)
636    
637    checkpoint58b_post
638    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
639      update output.txt of exp. aim.5l_cs.thSI
640    o various mnc cleanups and improvements:
641      + shrink lookup tables by factor of ~4
642      + better error reporting when running out of lookup space
643      + able to handle longer path/file names (up to 500 chars)
644    o adjoint:
645      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
646      - TBD: "hidden" mom_vecinv recomp. in dynamics
647    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
648     (allow to differentiate between forcing components using new integer flags:
649      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
650     and add new flag to put Dissipation tendency out of Adams-Bashforth.
651    o ecco
652      - enable trend removal from SSH anomaly obs.
653    o adjoint
654      - a fix for PmEpR when #undef EXACT_CONSERV
655      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
656      - try to fix "hidden" recomp. in forward_step for NLFS
657        (NLFS seems broken sometimes after I checked it in)
658    o seaice:
659     - add c-grid version of the dynamic solver:
660       + three new routines that are the c-grid substitute lsr, dynsolver
661         and ostres
662       + put a few fields that were local to dynsolver into global common
663         blocks, so that I can move the computation of stresses etc into
664         seaice_lsr (saves coding but may break the adjoint).
665     - replace more hardwired parameters by runtime parameters
666     - add ice masks that mask the rhs of the implicit solvers where there
667       is no ice (commented out in seaice_dynsolver, because i am not sure
668       if this works properly), eventually this should replace the clipping
669       of ice velocities in seaice_dynsolver to +/-40cm/s.
670    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
671      include it only where its needed
672    o move balancing of fluxes before the call of external_forcing_surf
673    o seaice:
674      - correct units of turning angles (now they are really in degrees)
675      - move computation of GWATX/Y out of main routine into dynsolver
676      - initialize GWATX/Y in seaice_init
677    o Apply mask on Fresh-Water flux (needed for SSH forcing).
678      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
679    o seaice: add runtime flags for turning angles (default to zero)
680    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
681      and trend from exf forcing and ctrl control adjustments
682    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
683      (since checkpoint57x_post)
684    o change the default rotation period to 86164.s = the Earth rotation
685    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
686      and based on a reference stratification. Tested within hs94.cs-32x32x5.
687    o seaice advection: add code for choosing between the default (2nd order
688      central differences) and multiDim advection schemes provided by
689      pkg/generic_advdiff
690    o seaice:
691      - removed all references to SEAICE_GRID.h fields from
692        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
693        (cubed-sphere configuration will change a little)
694      - grid computations in seaice_init are obsolete now.
695      - cleaned up code a little so that is easier to read (hopefully).
696      - added new (better?) discretizations of default advection and diffusion
697        (turn on with SEAICEuseFluxForm)
698      - replace 1 in 3d global fields by kSurface in growth.F
699      
700    checkpoint58a_post
701    o seaice:
702      - bug fix in advect.F
703    o shelfice:
704      - separate shelfice load anomaly from pload (breaks with time
705        dependent forcing), => introduce constant field shelficeLoadAnomaly.
706        Its default is 0., but it may be computed more cleverly from (unknown)
707        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
708        done offline. A good approximation of the pressure load anomaly is
709        necessary to avoid large initial adjustment processes underneath
710        deep-reaching shelfice.
711      - small fix in ISOMIP shelfice_thermodynamics
712      - add more sophisticated thermodynamics of Hellmer (1989), this is
713        now the default
714      - give a few constants more intuitive names
715    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
716      if bulk formulae are used in long integration (especially EmPmR). Turn
717      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
718      if balancePrintMean, the imbalance that is substracted is printed to
719      STDOUT.
720    o fix bug (typo) in obcs_apply_eta.F
721    o add a new package shelfice which enables us to model the circulation
722      underneath shelf-ice with draughts of hundreds of meters.
723     - works
724     - to do: + include improved thermodynamics
725              + check whether kSurfC (from model/inc/SURFACE.h) can be used
726                instead of new field kTopC
727              + can we use topoFile, Ro_surf and existing code in ini_depth.F
728                instead of new field R_shelfIce and new code in ini_depth.F
729                and ini_mask_etc.F?
730              + adjust vertical mixing schemes?
731    o seaice pkg:
732     - add a cpp-flag to include a simple formula for a salinity dependent
733       freezing point of sea water at the surface
734     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
735       meridional stresses are now different (and hopefully correct)
736    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
737       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
738       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
739    o pkg/diagnostics: add options and parameters for regional-statistics
740       diagnostics ; define regions by reading a region-mask from a file
741       (might add other options later)
742    o pkg/bulk_force:
743     - add option and parameters to use AIM surface-flux formulae.
744     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
745       others forcing fields (defined in PARM05, parameter file "data") are loaded
746       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
747     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
748     - use the right EXCH call for uwind,vwind (to work on CS-grid).
749     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
750       and parameters (note: calcWindStress replaces .NOT.readwindstress).
751     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
752    
753    checkpoint58
754    o add "--embed-source" option to genmake2 which, when the supporting
755      tools can be compiled (as determined by genmake2) will turn on the
756      embed_files package which then embeds the entire MITgcm source code
757      (*.[fFhc] + Makefile) used for the build within the executable
758      - requested by CNH but off by default
759      - adds a paltry <9MB to the mitgcmuv executable in most cases
760      - only writes the output when useEMBEDSRC in eedata is true
761    o clean up 3-dim. relaxation codes:
762      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
763      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
764      * Thanks to Tom Haine for testing!
765    
766    checkpoint57z_post
767    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
768      affects output (@ truncation level) of exp. plume_on_slope ; updated.
769    o fix the pickup behavior for obcs in combination with ptracers
770    o fix a bug in ptracers_external_fields_load
771    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
772      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
773    o transfered surface NH pressure to eta field (if exactConserv).
774    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
775         and update lab_sea output.txt file.
776    o completing 3-dim. relaxation code: additional term
777         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
778      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
779      * At compile time, in "EXF_OPTIONS.h" set
780          #define  ALLOW_CLIMTEMP_RELAXATION
781          #define  ALLOW_CLIMSALT_RELAXATION
782      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
783          tauThetaClimRelax3Dim = 15552000.0,
784          tauSaltClimRelax3Dim  = 15552000.0,
785      * 3 cases:
786          1) Use a constant-in-time 3-dim. field
787          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
788          3) Real-time relax. to time-evolving prescribed field
789    o Adding Laplacian-type smoothness constraint on
790      initial and boundary (forcing) controls (ic, bc)
791      * enable at compile-time via
792        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
793      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
794      * Absolute scale somewhat unclear so far
795      * no area weighting was included since no other cost term does so far
796    
797    checkpoint57y_post
798    First step for a NLFS adjoint
799    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
800    o new init. routines for calc_r_star, calc_surf_dr
801    o still need to deal with ini_masks_etc
802    o testreport seemed happy
803    checkpoint57y_pre
804    
805    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
806    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
807    o add new offset feature to offline pkg (plus minor cleanup)
808    o cfc fixes for final year of integration
809    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
810      be in GCHEM_OPTIONS).
811    
812    checkpoint57x_post
813    o fix testreport Pb in multiple test experiment.
814    o cleanup our namelist syntax in verification:
815      - make it more F95 standards compliant (some work still needed)
816      - allows the vast majority of our tests to work with gfortran
817    o Non-Hydrostatic:
818     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
819     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
820    o Allow to apply AB on T,S rather than on AB(gT,gS):
821     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
822     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
823       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
824     - need a "clever" read_pickup to restart from the other AB formulation
825    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
826    o remove some unused variables (reduces number of compiler warnings)
827    o adjoint
828      * Disable useVariableViscosity for adjoint for time being
829        (there are a number of extensive recomputations)
830      * Initialize certain variables needed for adjoint
831    
832    checkpoint57w_post
833    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
834                 fix the singleCpuIO RS version of MDSWRITEFIELD
835       and add a WARNING if using globalFiles=T with multi-processors.
836    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
837      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
838    o tracer advection scheme:
839      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
840       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
841       was not very convenient).
842      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
843       (further tests needed for the implicit DST & Flux-Limiter schemes).
844    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
845      and sRef for convenience, handy, when you want to initialize
846      ptracers in a large domain with a constant non-zero value. Also,
847      untangle ptracers_init.F a little.
848    
849    checkpoint57v_post
850    o change dome exp. to use variable viscosity in side-drag terms.
851    o remove all the files from the cfc_offline test since they are now
852      incorporated into tutorial_cfc_offline which has been producing
853      identical results for a few days of testing
854    o add new parameter: sideDragFactor to enable half-slip-side BC
855      and change side-drag S/R to use viscosity from mom_calc_visc
856      (can switch back by setting sideDragFactor=0.); affects results at
857      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
858       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
859    o vorticity & strain are now computed without masking, to account for
860      no-slip-side BC in variable viscosity calculation ; mask is applied
861      anyway later on, before computing advection/coriolis terms.
862    o modify exp4 to test new obcs support for reading from external files
863      and for passive tracers
864    o fix behavior of ptracers_monitor when monitor output is written to a
865      netcdf-file; still not independent of monitor.F (writes in the same
866      file).
867    o change default value of tRef (put a uniform, meaningful value for ocean
868      & atmos) and initialize sRef (was missing, as Martin mentioned).
869    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
870      to be proportional to enstrophy dissipation length.  Thus,
871       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
872      This is now consistent with Smagorinsky and with the manual.
873    
874    checkpoint57u_post
875    o OBCS and PTRACERS: add open boundary support for passive tracers
876      - either use homogenous (pseudo) v.Neumann conditions or prescribe
877        OB-values from file; this is not different from the way theta and salinity
878        are treated
879      - however, Orlanski-radiation conditions are not supported, and the model
880        will stop if you use pTracers and Orlanski at the same time.
881      - beefed up the rountine obcs_external_fields_load: now only those open
882        boundary values are overwritten with values from files for which there
883        are really files, otherwise the OB-fields remain untouched. This makes
884        it possible to use different OBs at different ends of the domain (as
885        with EXF)
886    o reduce number of exch calls in shap_filt (s2).
887    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
888      truncation level) 4/5 MLAdjust test results (11&12 digits match).
889    
890    checkpoint57t_post
891    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
892    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
893      same truncation, independent of the face number: affects affects several
894      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
895    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
896      note that biharmonic viscosity + no-slip was not tested in any experiment.
897    o fix bug in non-linear free-surf side-drag ; generate new output for
898      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
899    o make mnc honor the writeBinaryPrec flag for most kinds of output
900    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
901    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
902      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
903    o add brackets in multi-terms sum to get same truncation, independent of
904      the face number (manage to get exactly same value of gU,gV at the cs-edge)
905      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
906    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
907      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
908      a maximum grid-scale Reynolds number.  Also, changes all length calculations
909      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
910      Suggested values of viscosity parameters found in mom_calc_visc.
911      Many new viscosity diagnostics available.
912    
913    checkpoint57s_post
914    o Add clearing-house for viscosity calculations, mom_calc_visc and
915      correct numerous bugs in LeithD and Smagorinsky discretizations.  
916      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
917      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
918      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
919      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
920      The Strain-Tension form is now called with useStrainTensonVisc=.true.
921      ViscAhStrain and viscAhTension are now retired.
922    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
923    o In response to JMC's bug report, genmake2 now ignores any soft-links
924      that it finds in the *current* directory when searching for files.
925      Soft-links found in any other source directories will still work as
926      they did before.
927    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
928      a C routine to unlimit the stack size
929    o mnc-ify pkg/aim snapshot vars
930    o mnc-ify pkg/land as requested by Daniel
931    o various changes to mnc including:
932      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
933      - output can now be grouped so that all files within a group
934          change the ITER portion of their names in lock-step together
935      - can now read ("global") PER-FACE (in addition to PER-TILE) files
936          and works with both EXCH1 and EXCH2 (but needs more testing)
937      - writing works for all verification test cases w/ g77 on Linux
938    
939    checkpoint57r_post
940    o make MNC variable initialization happen earlier
941    o add diagnostics for (almost) each term of the momentum Eq.
942    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
943    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
944    o remove MINIMAL_TAVE_OUTPUT option ;
945      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
946    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
947      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
948    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
949    o add time-dependent SST, SSS control
950    o cost terms in ecco/ modularized (new cost_generic.F)
951    o cost_averages routines are modularized (new cost_averagesgeneric.F)
952    o new infrastructure for seaice model vs. obs misfits in seaice/
953      * driver from the_main_loop.F is seaice_cost_driver.F
954      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
955      * gradient check in Exp. 6a of natl_box_adjoint/
956    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
957      (see README file)
958    
959    checkpoint57q_post
960    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
961    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
962      - bug was reported by Jean-Michel and Ian Fenty
963    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
964      update exp. cpl_aim+ocn output.
965    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
966      Needed for high-res. runs with large global files
967      to be able to limit tapelev size
968    o Changed some tests for adjoint:
969      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
970      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
971      * global_ocean.90x40x15/ back to default 3-level checkpointing
972    o Modifications to enable scripted COMMON to MODULE conversion
973      * verification/OpenAD/code/ has necessary scripts and description;
974      * converts, compiles and runs successfully;
975    
976    checkpoint57p_post
977    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
978    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
979      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
980    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
981    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
982      (was already the case for dissipation with mom_vecinv,
983       and also the case for grad.PhiHyd when staggered-timeStep)
984      This will allow to put dissipation out-off the AB time-stepping.
985     Unfortunately, affects truncation error. Update output of exp. that "fails"
986      (cg2d matching number) and leave the others for later: front_relax(10),
987      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
988      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
989    
990    checkpoint57o_post
991    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
992      (2) its ready to be documented during the 20050801 DocFest
993    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
994      for ideal_2D_oce and lab_sea on linux_ia32_g77
995    o set to #undef CTRL_SET_OLD_MAXCVARS_30
996      in global1x1_tot/code_seaice_adj to access indices 32, 33
997      (worth another tag)
998    
999    checkpoint57n_post
1000    o adding precip control xx_precip 32
1001    o adding swflux control xx_swflux 33
1002    o Replacing 10 forcing penalty cost routines by 1 generic.
1003    o Implementing partitioning in time-mean and variable adjustment
1004      for atmos. state.
1005    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1006  o in natl_box_adjoint:  o in natl_box_adjoint:
1007    * updated: results_bulk/    * updated exp 1 to 10
1008    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1009    o updated global1x1/*_seaice_adj/
1010      to incorporate latest changes
1011    o enable useSingleCpuIO for mdsio vector routines
1012      (applies in particular to tapelev I/O)
1013    o removed inefficient K-loop in all active_file*control*.F
1014    
1015  checkpoint57m_post  checkpoint57m_post
1016  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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