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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.822 by mlosch, Fri May 25 12:53:44 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/seaice:
8  o moved ptracer ctrl index 17 -> 32    - allow values of SEAICE_elaticParm > 1
9      - make lsr boundary conditions free slip (by default, changes results of
10        lsr solver)
11      - no slip boundary conditions for lsr will follow
12      - set minimum of zeta to zero (and not 4e8) (changes results)
13    o change calculation of Visbeck K:
14      - no longer depend on tapering scheme; instead, compute slope (limited
15        by GM_maxSlope). this is equivalent to what was comuted before with
16        clipping or linear tappering.
17      - fix vertical averaging (wrong by 1 level)
18      - leave the old version (but will not be maintained) within
19        #ifdef OLD_VISBECK_CALC / #endif
20    o change error catch in calc_r_star to improve vectorization
21    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
22      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
23    
24    checkpoint59b
25    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
26      - export/import (between ocean & coupler) fields needed for ocean DIC.
27    o pkg/seaice:
28      - get rid of three more exchanges seaice_calc_viscosities (required
29        different loop boundaries in seaice_lsr and seaice_ocean_stress)
30      - bug fix in seaice_ocean_stress (update of lab_sea required)
31      - reduce loop boundaries to necessary minimum also in seaice_evp
32      - go back to the old way of computing deltaC/Z as the adjoint likes that
33        better
34    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
35      passive tracer to an Age Tracer) + update output.txt
36    o pkg/exf:
37      - implement A-grid / C-grid selection for wind-stress input files.
38      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
39      for now, in exf_bulk_largeyeager04.F only :
40      - change implementation for case where windspeed + 2. components wind-stress
41        are read-in. AND use rhoConstFresh to convert evap.
42    o pkg/seaice:
43      - use correct EXCH_UV for wind-forcing (on A-grid).
44      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
45        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
46    o pkg/exf:
47      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
48      EXF_INTERPOLATION:
49      - merge global_with_exf/code version of exf_interp_read.F
50        to the main code ;
51      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
52        reading the file ; Important: This options needs to be defined to recover
53        previous code.
54        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
55      - no longer loose real*8 precision along the way when using exf_iprec=64.
56    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
57      - change discretisation of evp-solver in order to avoid another exchange
58        (changes lab_sea) and clean up a little
59      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
60        help the adjoint (this also changes the results slightly)
61      - add a few "_d 0" where they had been missing in seaice_evp.F
62      - cleaning up: remove unused seaice_calc_rhs.F
63    o pkg/exf: some cleaning-up:
64      - change various "constants" into runtime parameters
65      - cleaned-up Large&Yeager04 routine which should eventually
66        replace exf_bulkformulae.F (changed names of S/R and CPP)
67        and merged various ALLOW_ATM_WIND options
68     only used with thsice pkg (in thsice_get_exf.F):
69      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
70        which are used when useStabilityFct_overIce=TRUE (= the default)
71      - change default values of ice & snow emissivity and scale downward LW
72        by ice & snow emissivity.
73    o pkg/thsice:
74     fix few little problems, in thsice_calc_thickn.F:
75      - growth vertically (and not laterally) if iceFrac == iceMaskMax
76      - melt laterally only if hIce < hThinIce (as the comments say)
77      and in thsice_extend.F:
78      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
79      - start to form ice as soon as the minimum ice-volume is reachable.
80     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
81      and cpl_aim+ocn
82    o pkg/kpp
83     - move computation of surface related input fields to KPP into a new
84       subroutine kpp_forcing_surf.F
85     - remove wrong (within bi,bj loops) EXCH calls.
86     - little cleaning (add argument myThid in last position, cvs header ...)
87     - for now, fix conservation problem by exchanging KPPviscAz (may not
88       be the best fix)
89    o pkg/seaice
90     - check for inconsistent evp parameter/cpp-flag combination
91     - remove leftover errIO flat for obsolete name list error handling
92    o OpenAD
93     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
94    
95    checkpoint59a
96    o pkg/seaice: some parameter clarifications and a little bit of clean up
97    o pkg/thsice: rename run-time parameters:
98       himin       -> hIceMin
99       himin0      -> hThinIce
100       hihig       -> hThickIce
101       i0          -> i0swFrac
102       transCoef   -> bMeltCoef
103       frac_energy -> fracMelting
104      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
105       with default values (for now) that do not change the results.
106      remove old version of thsice vars advection in pkg/seaice.
107    o in FFIELDS.h:
108      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
109      - make pLoad & sIceLoad always available (but still only used if
110         ATMOSPHERIC_LOADING is #define).
111    o pkg/kpp: replaced _KPP_RL with _RL
112    o bug fixes for vertical diffusivity computations when both KPP and
113        3D diffusivity arrays are used.
114    o pkg/seaice: fix bug in evp solver, while doing that
115      - change (improve?) discretization of stress computations for both
116        cgrid-lsr and evp solver
117      - add a new routine to compute strain rates
118      - the above changes lab_sea results
119      - add no slip conditions for evp solver (off by default), lsr-version
120        may follow
121      - fix exchange for shear at Z-points (does not change lab_sea)
122      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
123        (to force the user to pick a time step since there is not "safe" way
124        of choosing it)
125      - add principal stress diagnostics
126      - rearrange fields for evp a little to avoid having to call a: too many
127        exchanges and b: exchanges for stress trensor components which we do
128        not have.
129      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
130        of evp, complete rewrite for lsr case (latter is does not yet work
131        in all cases)
132    o pkg/kpp: add code to have mixing in shelf ice caverns
133      - add myThid to all kpp routines (long overdue)
134    
135    checkpoint59
136    o pkg/exf:
137      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
138        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
139      - move exf header files from lower_case.h to UPPER_CASE.h ;
140        add missing cvs Header & Name
141      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
142      - add namelist param. selectStressGridPosition, exf_monFreq
143      - retire many _CLIM routines, and remove data.exf_clim
144        + params moved to data.exf
145        + climsst, climsss now handled by exf_set_gen, i.e.
146          climss?period=0 refers to constant field,
147          climss?period=-12 to monthly forcing
148      - split up namelists in data.exf
149    o pkg/seaice:
150      - remove seaice_exch and seaice_exch_uv
151      - remove superfluous exchange of theta
152      - add myThid to seaice_budget_ocean/ice
153      - add new interface for atmospheric wind forcing (C-grid only)
154        + new routine
155        + two new field (taux, tauy for stress over ice)
156        + removed one global field (DAIRN) for C-grid case only
157    o pkg/thsise
158      - 2nd set of modifs for thsice adjoint in conjunction with exf
159    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
160    
161    checkpoint58y_post
162    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
163      vertical diffusivity, similar to that in MOM4; turned on using
164      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
165      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
166    o Added capability for 3D specification of background vertical diffusion
167      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
168      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
169      "data" file that contains the 3D vertical diffusivity coefficients.
170    o ice dynamics (pkg/seaice) with thsice thermodynamics:
171      - add code within pkg thsice to advect & diffuse sea-ice fields
172      similar to (and will replace) what has been added in  seaice_advdiff.F,
173      but: - conserving Mass, Heat & Salt.
174           - better when using non-linear advection scheme (not yet fully tested)
175           - can also be used in atmospheric set-up (for now, only the diffusion).
176    
177    checkpoint58x_post
178    o IO option for global-file compact format:
179      - add options when generating topology (utils/exch2/matlab-topology-generator)
180      - add I/O capability (pkg/mdsio).
181      - adapt utils/matlab/rdmds.m to read this format.
182      for now long-line format not yet supported by pkg/mdsio (& exch2).
183    o shelfice: add a few diagnostics
184    
185    checkpoint58w_post
186    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
187      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
188      (and replace horiVertRatio in NH code).
189      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
190                         and tutorial_plume_on_slope (sensitive to truncation)
191    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
192      directly to drive seaice model (C-grid only)
193    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
194     - reintroduce computation of wind from stress,
195     - compute tau (in exf_bulkformulae.F) from windstress averaged to
196       mass points to avoid tau = 0
197     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
198    o rdmnc.m: make it work with "global" files created with gluemnc
199    o rdmnc.m : some improvements in dealing with singleton dimension
200      (tested on all testreport mnc output files).
201    o genmake2: disable pkg/profiles if netcdf test fails.
202    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
203    o move call to cal_readparms up to make calendar parameters/variable available
204      to all packages
205    
206    checkpoint58v_post
207    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
208      useDynP_inEos_Zc tested.
209    o pkg/exf: changes to properly interpolate/mask/scale initial fields
210    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
211      and portions thereof.  See read_cs.txt for description and examples.
212    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
213      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
214      following the great-circle arc between those 2 points.
215    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
216      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
217    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
218     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
219     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
220     - still needs work (not working with some options ; efficiency to improve)
221       and serious testing.
222     - use this scheme for temperature & salinity in 2 advection test exp.:
223       advect_xy & advect_xz, respectively.
224    
225    checkpoint58u_post
226    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
227    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
228    o testreport: add option "-skipdir" to skip some test.
229    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
230      momentum calculation.
231    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
232    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
233      remove checkpoint.F and the_correction_step.F (no longer used);
234      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
235    o add option (linFSConserveTr) to correct for tracer source/sink due to
236      Linear Free surface
237    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
238    o pkg/thsice: fix reading mnc-pickups
239    
240    checkpoint58t_post
241    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
242    o pkg/mdsio:
243     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
244       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
245       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
246     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
247     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
248       either MDS_READ_FIELD or MDS_WRITE_FIELD )
249     - new S/R (to replace MDSWRITEMETA), which allows to write more
250       informations (variable names, time ...) to meta files.
251     - modify rdmds.m to give back the meta file content.
252    o pkg/diagnostics: change vertical interpolation to be safer, and more
253       flexible (define p-levels to interpolate to in data.diagnostics);
254      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
255       diagnostic pointer.
256    o pkg/seaice: more cleaning up of seaice_growth, added many comments
257    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
258    o fix multi-category seaice:
259     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
260       SEAICE_MULTICATEGORY
261     - fix short wave heat flux
262    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
263       and allow to use EVP solver. Change forward lab_sea: test both EVP
264       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
265    o Initial check-in of lab_sea adjoint
266      (very similar to natl_box_adjoint/code_seaice)
267      * used C-grid and EVP solver
268      * used KPP, GM/Redi
269      * uses inAdExact=.TRUE.
270      * gradient checks fail for both ADM and TLM
271        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
272        f.d. gradients actually seem more problematic than ADM, TLM gradients;
273        issue is related to forward mismatch between g77 an ifort
274    o pkg/seaice: overhaul of thermodynamics
275     - growth.F and groatb.F are replaced by new routine seaice_growth.F
276     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
277     - move a few global fields out of SEAICE.h into seaice_growth.F and
278       make them 2D (FICE/QNETO/ ...)
279     - remove FO (it is the same as QNETO)
280     - introduce a few local fields to avoid modifying external fields such
281       as atemp, etc.
282    
283    checkpoint58s_post
284    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
285      changed exf_set_gen.F so that
286        genperiod=0 means input file is one time-constant field and
287        genperiod=-12 means input file contains 12 monthly means
288    o CG2D: use pre-computed solver main-diagonal (stored in common block);
289      this affects truncation error ; generate new output file for exp. which
290      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
291        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
292        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
293        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
294        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
295        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
296    o start implementation of deep-atmosphere and anelastic formulation
297    o verification: remove 2nd copy of input files and use script "prepare_run"
298      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
299    o mom_common/vecinv/fluxform: fix a few initialisation isssues
300    o profiles: fix for multithreaded case
301    
302    o diagnostics: rename few diags:
303      s/'PRESSURE'/'RCENTER '/g
304      s/'TICE    '/'oceFreez'/g
305      s/'TAUX    '/'oceTAUX '/g
306      s/'TAUY    '/'oceTAUY '/g
307      s/'SWFLUX  '/'oceQsw  '/g
308      s/DIFx/DFxE/g
309      s/DIFy/DFyE/g
310      and add few ocean-forcing diagnostics:
311      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
312    o modifications to pkg/seaice/growth.F and budget.F, which change results of
313      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
314      as actual snow thickness.  It now refers everywhere to effective snow
315      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
316    
317    checkpoint58r_post
318    o modifications to pkg/seaice/growth.F, which change results of
319      lab_sea experiment: fixes pertain to melting snow over open water, to
320      masking EVAP under sea ice, and to using the correct AREA variable for
321      computations of EVAP, PRECIP, HSNOW, and GHEFF
322    o add ability to read bathy, salt, and theta using MNC (off by def)
323    o add flooding algorithm and advection of HSNOW for pkg/seaice;
324      both are turned off by default and do no change any results
325    o seaice advection with pkg/thsice: a step toward the use of non-linear
326      advection scheme, but #ifdef or commented out for now (requires more EXCH).
327    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
328      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
329      in natl_box (affects results @ truncation level: update output.txt)
330    o multi-threading and IO:
331      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
332      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
333        (needed to work with SingleCpuIO): tested in all verif. exp.
334    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
335      affects the results (but none of the verification test uses this scheme).
336    o Adding some pkg/diagnostics capability to pkg/seaice
337      (will certainly be subject to changes)
338    o ctrl: adding new control variables:
339      lwflux, lwdown, evap, snowprecip, apressure, runoff
340    
341    checkpoint58q_post
342    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
343      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
344      high_res_cube configuration by 4% on Columbia.
345    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
346      add (in global_with_exf/code) a version of EXF_INTERP_READ without
347      dynamical allocation (seems to work in multi-threaded).
348    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
349      single CPU io) so that TAF does not have to see EESUPPORT.h
350    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
351    
352    checkpoint58p_post
353    o obcs: stop if obcs is used with useCDscheme = .true.
354    o shelfice:
355     - fix a sign error so that no slip at shelfice interface works
356     - remove stop for combination non-hydrostatic code and shelfice. That does
357       not mean, that the results are correct, but at least they are numerically
358       stable
359    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
360    o added adjoint exch routined for all exch*3d* routines
361      and updated flow directives
362    
363    checkpoint58o_post
364    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
365      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
366    o change controling S/R for writing pickup file (new S/R do_write_pickup)
367      and clean-up reading/writing of pickup files.
368    o fix local version of read/write pickup (NH part) in rotating_tank/code
369    o simplify EXCH interface:
370     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
371     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
372    o added the regrid package
373    o shelfice:
374     - add a simple boundary layer scheme to reduce noise
375     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
376    
377    checkpoint58n_post
378    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
379       local variable (not in common block).
380    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
381      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
382      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
383        to work with SingleCpuIO.
384    o add "_d 0" to real constant of pkg/cfc subroutines ;
385       update exp. cfc_exemple & tutorial_cfc_offline output files.
386    o multi-threading and IO:
387      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
388        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
389      - barrier before and after reading.
390      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
391      - avoid using MDS_WRITELOCAL for LAND pkg output.
392      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
393        common-block variables ; Allows multi-threading with master-thread IO.
394    o change default MAX_NO_THREADS from 32 to 4 ;
395      and stop cleanly when MAX_NO_THREADS is too small.
396    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
397    
398    checkpoint58m_post
399    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
400       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
401    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
402       keep global_ocean.90x40x15 (for AD testing) with former secondary test
403       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
404    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
405        add MITgcm_tutorials (= code + all the tutorials)
406    o ecco, option to compute cost for total ssh (mean+anom)
407    o consistent with addition of ptracer and ssh in pkg/profiles
408    o profiles: adding ptracer and ssh
409    o testreport: change multi-test output-file name
410      (from output.txt.{name} to output.{name}.txt)
411    o profiles: now ok for mutli-tiles case
412    o seaice: add 4 parameters for different advection schemes for area,
413      (effective) seaice thickness, enthalphy, and snow height. Their default
414      is the standard parameter SEAICEadvScheme
415    o calc_gw:
416     - add cosFacU in zonal viscous flux (harmonic.visc.).
417     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
418       of tutorial_plume_on_slope.
419    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
420    o calc_gw: true flux-form, account for horizontal grid spacing.
421      update rotating_tank results, but not plume_on_slope (affected at
422      truncation level, 11 digits).
423    
424    checkpoint58l_post
425    o calc_gw:
426     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
427     - remove side-drag for now (need to fix it); update plume_on_slope results.
428     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
429    o commit code to make SST/SSS weights spatially variable
430      (based on either variable in-situ or variable initial T/S weights)
431    o pkg/ecco:
432      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
433        now based on horizontally varying weights wthetaLev, wsaltLev
434      * cost_averagesflags now returns year indices in addition to day, month
435      * sflux balance is performed on annual basis
436        (sflxumm, sfluxmm2, bal_sfluxmm)
437      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
438        including separate counting and multipliers
439    o pkg/rbcs
440      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
441    
442    checkpoint58k_post
443    o testreport:
444     - always build in dir. "build" (if not there, mkdir build instead of building
445       & running in input)
446     - run in dir run (if it exists), in build otherwise.
447     - call prepare_run (if input/prepare_run exists)
448     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
449    o pkg/exf modifications to interpolation and rotation routines for more
450       reasonable treatment of North Pole singularity: for tracers North Pole
451       value is set to northernmost zonal-mean value, for zonal velocity it is
452       set to zero, and for meridional velocity it is set to northernmost value.
453    o pkg/exf/exf_check_range.F
454     - add tile index to diagnostics and move stop statement to the very
455       end of the routine.
456    o pkg/diagnostics: (diagnostics_main_init.F)
457      define title of isomorphic variables according to the current config.
458    o pkg/thsice with pkg/seaice dynamics:
459    - fix domain of computation (interior only, required for exf) and do exchanges
460    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
461    o towards a standard way of dealing with multi-threading in MONITOR
462      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
463    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
464       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
465    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
466    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
467    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
468       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
469    o tracer advection:
470     - clean-up and simplify calc_common_factors.F
471     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
472       advection subroutine (but still not used within DST advection S/R)
473    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
474    
475    checkpoint58j_post
476    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
477      from file (collects calls previously in FORWARD_STEP)
478    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
479    o adjoint store dir. adjusted accordingly
480    o genmake2
481      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
482    
483    checkpoint58i_post
484    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
485      on wind stress (SEAICEstressFactor defaults to 1.)
486    o Total number of Timers is finite (<=40): comment out 2 non-essential one
487      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
488    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
489      on CS-grid: no longer loosing mass.
490    o exf & curvilinear-grid: no longer modify longitude xC & xG.
491    o pkg/ggl90: fix sloppy output and fix a bug
492    o pkg/seaice: added SEAICEuseEVPpickup parameter
493      - Set to false in order to start EVP solver with
494        non-EVP pickup files when using SEAICEuseEVP
495      - fix sign error in diffusion in seaice_calc_rhs
496    
497    checkpoint58h_post
498    * Modifications for bottom topography control
499      o replace hFacC by _hFacC at various places
500      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
501      o add non-self-adjoint cg2d_nsa
502      o update autodiff support routines
503      o re-initialise hfac after ctrl_depth_ini
504      o works for 5x5 box, doesnt work for global_ocean.90x40x15
505    * Adding verification for 5x5 box (4-layer) bottom topography control
506    
507    checkpoint58g_post
508    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
509       used for mean seasonal cycle, mean diurnal cycle); add an example
510       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
511    o pkg/ggl90:
512      - add parameter (minimum surface kinetic energy)
513      - fix bug (avoiding division by zero)
514    o couple pkg/thsice to pkg/seaice:
515      - modify advection in seaice to accomodate new scalar fields to be advected
516      - only muliDimAdection scheme work with seaice/thsice
517      - mapping of thsice-variables to seaice-variables, back and forth
518      - does not break the verification experiments, but does not give the
519        desired results either
520    o pkg/seaice
521      - make (default) second order advection a bit less confusing?
522    
523    checkpoint58f_post
524    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
525      to pkg/seaice):
526      - new routines thsice_map_exf and thsice_get_exf provide the interface
527      - add an additional formal parameter to thsice_solve4temp
528    o pkg/exf:
529      - add new fields wspeed, snowprecip (to be able to couple to thsice)
530      - correct Stefan-Boltzmann constant
531      - new parameter for longwave surface emittance
532      - separate some stuff from exf_bulkformulae into new routines  
533        exf_radiation, exf_wind
534      - add new parameters and constants: longwave emissivity for ocean, ice
535        and snow, evaporation parameters over ice
536      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
537        either wind from stress or stress from wind
538    o pkg/thSIce:
539    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
540    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
541       and THSICE_CALC_THICKN
542    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
543    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
544      to make debugging easier.
545    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
546    o pkg/bulk_force:
547      - clean-up comments and parameters ;
548      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
549    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
550      generate new output for test-experiment: aim.5l_cs.thSI
551    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
552      testreport accordingly
553    
554    checkpoint58e_post
555    o SEAICE_CGRID adjoint done
556    o R_STAR adjoint implemented.
557      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
558      * need to sort out init. of h0facc, etc.
559    o Make pkg/profile fully independent of ecco,cost, etc. stuff
560      to be able to use it in pure forward.
561    
562    checkpoint58d_post
563    o upgrade simple test-experiment to tutorial example:
564     step.1: duplicate the experiment and (step.2) will remove the old copy.
565      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
566      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
567      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
568      tutorial_global_oce_biogeo    <- copy of dic_example
569      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
570      tutorial_plume_on_slope       <- copy of plume_on_slope
571      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
572      tutorial_global_oce_optim     <- empty for now (David ?)
573      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
574     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
575    o correct a sign problem in cost_scat.F
576    o obcs and ptracers: fix boundary conditions for advections schemes
577      with larger stencil
578    o thsice adjoint: start
579    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
580      completeness
581    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
582      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
583    o ptracers adjoint:
584      * avoid extensive recomputatations
585      * fix missing re-init. of gptr (missed by TAF)
586    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
587      me to turn off the excessive output to STDOUT that this package produces
588    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
589      and add those terms in Vector-Invariant formulation.
590    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
591      if the control period (xx_hfluxperiod etc) is 0
592    o in profiles pkg, clean routines and fix details
593    o in ecco pkg, reading ssh data:
594      fix problem in case the model does not start at iter0=0
595    o fix mnc-pickup/restart for ptracers
596    o new package prifiles:
597      code to compute profile-based cost by Gael Forget
598      (modifs in ecco, ctrl, autodiff)
599    o Benign bug fix in initialization (spotted by M. Mazloff) of
600      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
601    
602    checkpoint58c_post
603    o adjoint: finish NLFS adjoint and provide reference output in
604      verification/global_ocean.90x40x15/results_ad_nlfs
605    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
606      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
607      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
608      with SEAICE_CGRID defined.
609    o move calendarDumps from "data" to "data.cal" and clean-up the code
610      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
611    o add useEXF & useCAL flags (for now, set in hard-coded way)
612    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
613      (were missing in NH mode, and wrong in quasihydrostatic mode).
614      waiting for Chris updated version of calc_gw to add those CALLs.
615    o fix bug in quasihydrostatic S/R ;
616      add a test for this option: global_ocean.90x40x15.qshyd
617    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
618      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
619    o add on/off flag useOffLine for package OFFLINE
620    o seaice:
621      - modify advection so that it works also on the C-grid
622      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
623        problem in multi-tile runs with C-grid
624      - add flags for clipping ice velocities and/or masking solver forcing
625      - fix drag (ocean on ice) formulation and a bug that caused noise in the
626        C-grid solver
627      - added a few comments to seaice_diffusion.F
628      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
629        are now exclusive)
630      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
631        required re-ordering the code a little:
632       + make DAIRN global variable (defined in SEAICE)
633       + move computation of the viscosities eta and zeta into a new separate
634         routine (because I need to recompute them in seaice_ocean_stress.F)
635    
636    checkpoint58b_post
637    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
638      update output.txt of exp. aim.5l_cs.thSI
639    o various mnc cleanups and improvements:
640      + shrink lookup tables by factor of ~4
641      + better error reporting when running out of lookup space
642      + able to handle longer path/file names (up to 500 chars)
643    o adjoint:
644      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
645      - TBD: "hidden" mom_vecinv recomp. in dynamics
646    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
647     (allow to differentiate between forcing components using new integer flags:
648      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
649     and add new flag to put Dissipation tendency out of Adams-Bashforth.
650    o ecco
651      - enable trend removal from SSH anomaly obs.
652    o adjoint
653      - a fix for PmEpR when #undef EXACT_CONSERV
654      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
655      - try to fix "hidden" recomp. in forward_step for NLFS
656        (NLFS seems broken sometimes after I checked it in)
657    o seaice:
658     - add c-grid version of the dynamic solver:
659       + three new routines that are the c-grid substitute lsr, dynsolver
660         and ostres
661       + put a few fields that were local to dynsolver into global common
662         blocks, so that I can move the computation of stresses etc into
663         seaice_lsr (saves coding but may break the adjoint).
664     - replace more hardwired parameters by runtime parameters
665     - add ice masks that mask the rhs of the implicit solvers where there
666       is no ice (commented out in seaice_dynsolver, because i am not sure
667       if this works properly), eventually this should replace the clipping
668       of ice velocities in seaice_dynsolver to +/-40cm/s.
669    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
670      include it only where its needed
671    o move balancing of fluxes before the call of external_forcing_surf
672    o seaice:
673      - correct units of turning angles (now they are really in degrees)
674      - move computation of GWATX/Y out of main routine into dynsolver
675      - initialize GWATX/Y in seaice_init
676    o Apply mask on Fresh-Water flux (needed for SSH forcing).
677      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
678    o seaice: add runtime flags for turning angles (default to zero)
679    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
680      and trend from exf forcing and ctrl control adjustments
681    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
682      (since checkpoint57x_post)
683    o change the default rotation period to 86164.s = the Earth rotation
684    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
685      and based on a reference stratification. Tested within hs94.cs-32x32x5.
686    o seaice advection: add code for choosing between the default (2nd order
687      central differences) and multiDim advection schemes provided by
688      pkg/generic_advdiff
689    o seaice:
690      - removed all references to SEAICE_GRID.h fields from
691        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
692        (cubed-sphere configuration will change a little)
693      - grid computations in seaice_init are obsolete now.
694      - cleaned up code a little so that is easier to read (hopefully).
695      - added new (better?) discretizations of default advection and diffusion
696        (turn on with SEAICEuseFluxForm)
697      - replace 1 in 3d global fields by kSurface in growth.F
698      
699    checkpoint58a_post
700    o seaice:
701      - bug fix in advect.F
702    o shelfice:
703      - separate shelfice load anomaly from pload (breaks with time
704        dependent forcing), => introduce constant field shelficeLoadAnomaly.
705        Its default is 0., but it may be computed more cleverly from (unknown)
706        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
707        done offline. A good approximation of the pressure load anomaly is
708        necessary to avoid large initial adjustment processes underneath
709        deep-reaching shelfice.
710      - small fix in ISOMIP shelfice_thermodynamics
711      - add more sophisticated thermodynamics of Hellmer (1989), this is
712        now the default
713      - give a few constants more intuitive names
714    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
715      if bulk formulae are used in long integration (especially EmPmR). Turn
716      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
717      if balancePrintMean, the imbalance that is substracted is printed to
718      STDOUT.
719    o fix bug (typo) in obcs_apply_eta.F
720    o add a new package shelfice which enables us to model the circulation
721      underneath shelf-ice with draughts of hundreds of meters.
722     - works
723     - to do: + include improved thermodynamics
724              + check whether kSurfC (from model/inc/SURFACE.h) can be used
725                instead of new field kTopC
726              + can we use topoFile, Ro_surf and existing code in ini_depth.F
727                instead of new field R_shelfIce and new code in ini_depth.F
728                and ini_mask_etc.F?
729              + adjust vertical mixing schemes?
730    o seaice pkg:
731     - add a cpp-flag to include a simple formula for a salinity dependent
732       freezing point of sea water at the surface
733     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
734       meridional stresses are now different (and hopefully correct)
735    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
736       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
737       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
738    o pkg/diagnostics: add options and parameters for regional-statistics
739       diagnostics ; define regions by reading a region-mask from a file
740       (might add other options later)
741    o pkg/bulk_force:
742     - add option and parameters to use AIM surface-flux formulae.
743     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
744       others forcing fields (defined in PARM05, parameter file "data") are loaded
745       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
746     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
747     - use the right EXCH call for uwind,vwind (to work on CS-grid).
748     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
749       and parameters (note: calcWindStress replaces .NOT.readwindstress).
750     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
751    
752    checkpoint58
753    o add "--embed-source" option to genmake2 which, when the supporting
754      tools can be compiled (as determined by genmake2) will turn on the
755      embed_files package which then embeds the entire MITgcm source code
756      (*.[fFhc] + Makefile) used for the build within the executable
757      - requested by CNH but off by default
758      - adds a paltry <9MB to the mitgcmuv executable in most cases
759      - only writes the output when useEMBEDSRC in eedata is true
760    o clean up 3-dim. relaxation codes:
761      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
762      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
763      * Thanks to Tom Haine for testing!
764    
765    checkpoint57z_post
766    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
767      affects output (@ truncation level) of exp. plume_on_slope ; updated.
768    o fix the pickup behavior for obcs in combination with ptracers
769    o fix a bug in ptracers_external_fields_load
770    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
771      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
772    o transfered surface NH pressure to eta field (if exactConserv).
773    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
774         and update lab_sea output.txt file.
775    o completing 3-dim. relaxation code: additional term
776         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
777      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
778      * At compile time, in "EXF_OPTIONS.h" set
779          #define  ALLOW_CLIMTEMP_RELAXATION
780          #define  ALLOW_CLIMSALT_RELAXATION
781      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
782          tauThetaClimRelax3Dim = 15552000.0,
783          tauSaltClimRelax3Dim  = 15552000.0,
784      * 3 cases:
785          1) Use a constant-in-time 3-dim. field
786          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
787          3) Real-time relax. to time-evolving prescribed field
788    o Adding Laplacian-type smoothness constraint on
789      initial and boundary (forcing) controls (ic, bc)
790      * enable at compile-time via
791        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
792      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
793      * Absolute scale somewhat unclear so far
794      * no area weighting was included since no other cost term does so far
795    
796    checkpoint57y_post
797    First step for a NLFS adjoint
798    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
799    o new init. routines for calc_r_star, calc_surf_dr
800    o still need to deal with ini_masks_etc
801    o testreport seemed happy
802    checkpoint57y_pre
803    
804    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
805    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
806    o add new offset feature to offline pkg (plus minor cleanup)
807    o cfc fixes for final year of integration
808    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
809      be in GCHEM_OPTIONS).
810    
811    checkpoint57x_post
812    o fix testreport Pb in multiple test experiment.
813    o cleanup our namelist syntax in verification:
814      - make it more F95 standards compliant (some work still needed)
815      - allows the vast majority of our tests to work with gfortran
816    o Non-Hydrostatic:
817     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
818     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
819    o Allow to apply AB on T,S rather than on AB(gT,gS):
820     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
821     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
822       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
823     - need a "clever" read_pickup to restart from the other AB formulation
824    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
825    o remove some unused variables (reduces number of compiler warnings)
826    o adjoint
827      * Disable useVariableViscosity for adjoint for time being
828        (there are a number of extensive recomputations)
829      * Initialize certain variables needed for adjoint
830    
831    checkpoint57w_post
832    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
833                 fix the singleCpuIO RS version of MDSWRITEFIELD
834       and add a WARNING if using globalFiles=T with multi-processors.
835    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
836      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
837    o tracer advection scheme:
838      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
839       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
840       was not very convenient).
841      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
842       (further tests needed for the implicit DST & Flux-Limiter schemes).
843    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
844      and sRef for convenience, handy, when you want to initialize
845      ptracers in a large domain with a constant non-zero value. Also,
846      untangle ptracers_init.F a little.
847    
848    checkpoint57v_post
849    o change dome exp. to use variable viscosity in side-drag terms.
850    o remove all the files from the cfc_offline test since they are now
851      incorporated into tutorial_cfc_offline which has been producing
852      identical results for a few days of testing
853    o add new parameter: sideDragFactor to enable half-slip-side BC
854      and change side-drag S/R to use viscosity from mom_calc_visc
855      (can switch back by setting sideDragFactor=0.); affects results at
856      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
857       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
858    o vorticity & strain are now computed without masking, to account for
859      no-slip-side BC in variable viscosity calculation ; mask is applied
860      anyway later on, before computing advection/coriolis terms.
861    o modify exp4 to test new obcs support for reading from external files
862      and for passive tracers
863    o fix behavior of ptracers_monitor when monitor output is written to a
864      netcdf-file; still not independent of monitor.F (writes in the same
865      file).
866    o change default value of tRef (put a uniform, meaningful value for ocean
867      & atmos) and initialize sRef (was missing, as Martin mentioned).
868    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
869      to be proportional to enstrophy dissipation length.  Thus,
870       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
871      This is now consistent with Smagorinsky and with the manual.
872    
873    checkpoint57u_post
874    o OBCS and PTRACERS: add open boundary support for passive tracers
875      - either use homogenous (pseudo) v.Neumann conditions or prescribe
876        OB-values from file; this is not different from the way theta and salinity
877        are treated
878      - however, Orlanski-radiation conditions are not supported, and the model
879        will stop if you use pTracers and Orlanski at the same time.
880      - beefed up the rountine obcs_external_fields_load: now only those open
881        boundary values are overwritten with values from files for which there
882        are really files, otherwise the OB-fields remain untouched. This makes
883        it possible to use different OBs at different ends of the domain (as
884        with EXF)
885    o reduce number of exch calls in shap_filt (s2).
886    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
887      truncation level) 4/5 MLAdjust test results (11&12 digits match).
888    
889    checkpoint57t_post
890    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
891    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
892      same truncation, independent of the face number: affects affects several
893      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
894    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
895      note that biharmonic viscosity + no-slip was not tested in any experiment.
896    o fix bug in non-linear free-surf side-drag ; generate new output for
897      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
898    o make mnc honor the writeBinaryPrec flag for most kinds of output
899    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
900    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
901      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
902    o add brackets in multi-terms sum to get same truncation, independent of
903      the face number (manage to get exactly same value of gU,gV at the cs-edge)
904      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
905    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
906      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
907      a maximum grid-scale Reynolds number.  Also, changes all length calculations
908      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
909      Suggested values of viscosity parameters found in mom_calc_visc.
910      Many new viscosity diagnostics available.
911    
912    checkpoint57s_post
913    o Add clearing-house for viscosity calculations, mom_calc_visc and
914      correct numerous bugs in LeithD and Smagorinsky discretizations.  
915      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
916      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
917      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
918      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
919      The Strain-Tension form is now called with useStrainTensonVisc=.true.
920      ViscAhStrain and viscAhTension are now retired.
921    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
922    o In response to JMC's bug report, genmake2 now ignores any soft-links
923      that it finds in the *current* directory when searching for files.
924      Soft-links found in any other source directories will still work as
925      they did before.
926    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
927      a C routine to unlimit the stack size
928    o mnc-ify pkg/aim snapshot vars
929    o mnc-ify pkg/land as requested by Daniel
930    o various changes to mnc including:
931      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
932      - output can now be grouped so that all files within a group
933          change the ITER portion of their names in lock-step together
934      - can now read ("global") PER-FACE (in addition to PER-TILE) files
935          and works with both EXCH1 and EXCH2 (but needs more testing)
936      - writing works for all verification test cases w/ g77 on Linux
937    
938    checkpoint57r_post
939    o make MNC variable initialization happen earlier
940    o add diagnostics for (almost) each term of the momentum Eq.
941    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
942    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
943    o remove MINIMAL_TAVE_OUTPUT option ;
944      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
945    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
946      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
947    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
948    o add time-dependent SST, SSS control
949    o cost terms in ecco/ modularized (new cost_generic.F)
950    o cost_averages routines are modularized (new cost_averagesgeneric.F)
951    o new infrastructure for seaice model vs. obs misfits in seaice/
952      * driver from the_main_loop.F is seaice_cost_driver.F
953      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
954      * gradient check in Exp. 6a of natl_box_adjoint/
955    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
956      (see README file)
957    
958    checkpoint57q_post
959    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
960    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
961      - bug was reported by Jean-Michel and Ian Fenty
962    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
963      update exp. cpl_aim+ocn output.
964    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
965      Needed for high-res. runs with large global files
966      to be able to limit tapelev size
967    o Changed some tests for adjoint:
968      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
969      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
970      * global_ocean.90x40x15/ back to default 3-level checkpointing
971    o Modifications to enable scripted COMMON to MODULE conversion
972      * verification/OpenAD/code/ has necessary scripts and description;
973      * converts, compiles and runs successfully;
974    
975    checkpoint57p_post
976    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
977    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
978      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
979    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
980    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
981      (was already the case for dissipation with mom_vecinv,
982       and also the case for grad.PhiHyd when staggered-timeStep)
983      This will allow to put dissipation out-off the AB time-stepping.
984     Unfortunately, affects truncation error. Update output of exp. that "fails"
985      (cg2d matching number) and leave the others for later: front_relax(10),
986      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
987      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
988    
989    checkpoint57o_post
990    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
991      (2) its ready to be documented during the 20050801 DocFest
992    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
993      for ideal_2D_oce and lab_sea on linux_ia32_g77
994    o set to #undef CTRL_SET_OLD_MAXCVARS_30
995      in global1x1_tot/code_seaice_adj to access indices 32, 33
996      (worth another tag)
997    
998    checkpoint57n_post
999    o adding precip control xx_precip 32
1000    o adding swflux control xx_swflux 33
1001    o Replacing 10 forcing penalty cost routines by 1 generic.
1002    o Implementing partitioning in time-mean and variable adjustment
1003      for atmos. state.
1004    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1005  o in natl_box_adjoint:  o in natl_box_adjoint:
1006    * updated: results_bulk/    * updated exp 1 to 10
1007    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1008    o updated global1x1/*_seaice_adj/
1009      to incorporate latest changes
1010    o enable useSingleCpuIO for mdsio vector routines
1011      (applies in particular to tapelev I/O)
1012    o removed inefficient K-loop in all active_file*control*.F
1013    
1014  checkpoint57m_post  checkpoint57m_post
1015  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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