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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.827 by heimbach, Fri Jun 1 23:31:38 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_elasticParm > 1
11      - add new parameter SEAICE_evpTauRelax as an alternative
12        to SEAICE_elasticParm
13      - make lsr boundary conditions free slip (by default), changes result
14      - add code for no slip boundary conditions for lsr
15      - set minimum of zeta to zero (and not 4e8) (changes results)
16      - add a cap on AREA after advecting AREA if seaice_growth is not called
17    o change calculation of Visbeck K:
18      - no longer depend on tapering scheme; instead, compute slope (limited
19        by GM_maxSlope). this is equivalent to what was comuted before with
20        clipping or linear tappering.
21      - fix vertical averaging (wrong by 1 level)
22      - leave the old version (but will not be maintained) within
23        #ifdef OLD_VISBECK_CALC / #endif
24    o change error catch in calc_r_star to improve vectorization
25    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
26      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
27    o adjoint:
28      Re-organized adjoint checkpointing according to Matt Mazloff
29      (but with modifs/completions/cleanups)
30      Storing is now bundled into large arrays to optimized I/O
31      (and second step in cleanup of the_main_loop)
32    
33    checkpoint59b
34    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
35      - export/import (between ocean & coupler) fields needed for ocean DIC.
36    o pkg/seaice:
37      - get rid of three more exchanges seaice_calc_viscosities (required
38        different loop boundaries in seaice_lsr and seaice_ocean_stress)
39      - bug fix in seaice_ocean_stress (update of lab_sea required)
40      - reduce loop boundaries to necessary minimum also in seaice_evp
41      - go back to the old way of computing deltaC/Z as the adjoint likes that
42        better
43    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
44      passive tracer to an Age Tracer) + update output.txt
45    o pkg/exf:
46      - implement A-grid / C-grid selection for wind-stress input files.
47      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
48      for now, in exf_bulk_largeyeager04.F only :
49      - change implementation for case where windspeed + 2. components wind-stress
50        are read-in. AND use rhoConstFresh to convert evap.
51    o pkg/seaice:
52      - use correct EXCH_UV for wind-forcing (on A-grid).
53      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
54        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
55    o pkg/exf:
56      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
57      EXF_INTERPOLATION:
58      - merge global_with_exf/code version of exf_interp_read.F
59        to the main code ;
60      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
61        reading the file ; Important: This options needs to be defined to recover
62        previous code.
63        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
64      - no longer loose real*8 precision along the way when using exf_iprec=64.
65    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
66      - change discretisation of evp-solver in order to avoid another exchange
67        (changes lab_sea) and clean up a little
68      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
69        help the adjoint (this also changes the results slightly)
70      - add a few "_d 0" where they had been missing in seaice_evp.F
71      - cleaning up: remove unused seaice_calc_rhs.F
72    o pkg/exf: some cleaning-up:
73      - change various "constants" into runtime parameters
74      - cleaned-up Large&Yeager04 routine which should eventually
75        replace exf_bulkformulae.F (changed names of S/R and CPP)
76        and merged various ALLOW_ATM_WIND options
77     only used with thsice pkg (in thsice_get_exf.F):
78      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
79        which are used when useStabilityFct_overIce=TRUE (= the default)
80      - change default values of ice & snow emissivity and scale downward LW
81        by ice & snow emissivity.
82    o pkg/thsice:
83     fix few little problems, in thsice_calc_thickn.F:
84      - growth vertically (and not laterally) if iceFrac == iceMaskMax
85      - melt laterally only if hIce < hThinIce (as the comments say)
86      and in thsice_extend.F:
87      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
88      - start to form ice as soon as the minimum ice-volume is reachable.
89     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
90      and cpl_aim+ocn
91    o pkg/kpp
92     - move computation of surface related input fields to KPP into a new
93       subroutine kpp_forcing_surf.F
94     - remove wrong (within bi,bj loops) EXCH calls.
95     - little cleaning (add argument myThid in last position, cvs header ...)
96     - for now, fix conservation problem by exchanging KPPviscAz (may not
97       be the best fix)
98    o pkg/seaice
99     - check for inconsistent evp parameter/cpp-flag combination
100     - remove leftover errIO flat for obsolete name list error handling
101    o OpenAD
102     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
103    
104    checkpoint59a
105    o pkg/seaice: some parameter clarifications and a little bit of clean up
106    o pkg/thsice: rename run-time parameters:
107       himin       -> hIceMin
108       himin0      -> hThinIce
109       hihig       -> hThickIce
110       i0          -> i0swFrac
111       transCoef   -> bMeltCoef
112       frac_energy -> fracMelting
113      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
114       with default values (for now) that do not change the results.
115      remove old version of thsice vars advection in pkg/seaice.
116    o in FFIELDS.h:
117      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
118      - make pLoad & sIceLoad always available (but still only used if
119         ATMOSPHERIC_LOADING is #define).
120    o pkg/kpp: replaced _KPP_RL with _RL
121    o bug fixes for vertical diffusivity computations when both KPP and
122        3D diffusivity arrays are used.
123    o pkg/seaice: fix bug in evp solver, while doing that
124      - change (improve?) discretization of stress computations for both
125        cgrid-lsr and evp solver
126      - add a new routine to compute strain rates
127      - the above changes lab_sea results
128      - add no slip conditions for evp solver (off by default), lsr-version
129        may follow
130      - fix exchange for shear at Z-points (does not change lab_sea)
131      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
132        (to force the user to pick a time step since there is not "safe" way
133        of choosing it)
134      - add principal stress diagnostics
135      - rearrange fields for evp a little to avoid having to call a: too many
136        exchanges and b: exchanges for stress trensor components which we do
137        not have.
138      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
139        of evp, complete rewrite for lsr case (latter is does not yet work
140        in all cases)
141    o pkg/kpp: add code to have mixing in shelf ice caverns
142      - add myThid to all kpp routines (long overdue)
143    
144    checkpoint59
145    o pkg/exf:
146      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
147        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
148      - move exf header files from lower_case.h to UPPER_CASE.h ;
149        add missing cvs Header & Name
150      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
151      - add namelist param. selectStressGridPosition, exf_monFreq
152      - retire many _CLIM routines, and remove data.exf_clim
153        + params moved to data.exf
154        + climsst, climsss now handled by exf_set_gen, i.e.
155          climss?period=0 refers to constant field,
156          climss?period=-12 to monthly forcing
157      - split up namelists in data.exf
158    o pkg/seaice:
159      - remove seaice_exch and seaice_exch_uv
160      - remove superfluous exchange of theta
161      - add myThid to seaice_budget_ocean/ice
162      - add new interface for atmospheric wind forcing (C-grid only)
163        + new routine
164        + two new field (taux, tauy for stress over ice)
165        + removed one global field (DAIRN) for C-grid case only
166    o pkg/thsise
167      - 2nd set of modifs for thsice adjoint in conjunction with exf
168    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
169    
170    checkpoint58y_post
171    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
172      vertical diffusivity, similar to that in MOM4; turned on using
173      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
174      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
175    o Added capability for 3D specification of background vertical diffusion
176      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
177      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
178      "data" file that contains the 3D vertical diffusivity coefficients.
179    o ice dynamics (pkg/seaice) with thsice thermodynamics:
180      - add code within pkg thsice to advect & diffuse sea-ice fields
181      similar to (and will replace) what has been added in  seaice_advdiff.F,
182      but: - conserving Mass, Heat & Salt.
183           - better when using non-linear advection scheme (not yet fully tested)
184           - can also be used in atmospheric set-up (for now, only the diffusion).
185    
186    checkpoint58x_post
187    o IO option for global-file compact format:
188      - add options when generating topology (utils/exch2/matlab-topology-generator)
189      - add I/O capability (pkg/mdsio).
190      - adapt utils/matlab/rdmds.m to read this format.
191      for now long-line format not yet supported by pkg/mdsio (& exch2).
192    o shelfice: add a few diagnostics
193    
194    checkpoint58w_post
195    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
196      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
197      (and replace horiVertRatio in NH code).
198      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
199                         and tutorial_plume_on_slope (sensitive to truncation)
200    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
201      directly to drive seaice model (C-grid only)
202    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
203     - reintroduce computation of wind from stress,
204     - compute tau (in exf_bulkformulae.F) from windstress averaged to
205       mass points to avoid tau = 0
206     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
207    o rdmnc.m: make it work with "global" files created with gluemnc
208    o rdmnc.m : some improvements in dealing with singleton dimension
209      (tested on all testreport mnc output files).
210    o genmake2: disable pkg/profiles if netcdf test fails.
211    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
212    o move call to cal_readparms up to make calendar parameters/variable available
213      to all packages
214    
215    checkpoint58v_post
216    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
217      useDynP_inEos_Zc tested.
218    o pkg/exf: changes to properly interpolate/mask/scale initial fields
219    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
220      and portions thereof.  See read_cs.txt for description and examples.
221    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
222      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
223      following the great-circle arc between those 2 points.
224    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
225      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
226    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
227     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
228     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
229     - still needs work (not working with some options ; efficiency to improve)
230       and serious testing.
231     - use this scheme for temperature & salinity in 2 advection test exp.:
232       advect_xy & advect_xz, respectively.
233    
234    checkpoint58u_post
235    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
236    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
237    o testreport: add option "-skipdir" to skip some test.
238    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
239      momentum calculation.
240    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
241    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
242      remove checkpoint.F and the_correction_step.F (no longer used);
243      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
244    o add option (linFSConserveTr) to correct for tracer source/sink due to
245      Linear Free surface
246    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
247    o pkg/thsice: fix reading mnc-pickups
248    
249    checkpoint58t_post
250    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
251    o pkg/mdsio:
252     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
253       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
254       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
255     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
256     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
257       either MDS_READ_FIELD or MDS_WRITE_FIELD )
258     - new S/R (to replace MDSWRITEMETA), which allows to write more
259       informations (variable names, time ...) to meta files.
260     - modify rdmds.m to give back the meta file content.
261    o pkg/diagnostics: change vertical interpolation to be safer, and more
262       flexible (define p-levels to interpolate to in data.diagnostics);
263      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
264       diagnostic pointer.
265    o pkg/seaice: more cleaning up of seaice_growth, added many comments
266    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
267    o fix multi-category seaice:
268     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
269       SEAICE_MULTICATEGORY
270     - fix short wave heat flux
271    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
272       and allow to use EVP solver. Change forward lab_sea: test both EVP
273       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
274    o Initial check-in of lab_sea adjoint
275      (very similar to natl_box_adjoint/code_seaice)
276      * used C-grid and EVP solver
277      * used KPP, GM/Redi
278      * uses inAdExact=.TRUE.
279      * gradient checks fail for both ADM and TLM
280        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
281        f.d. gradients actually seem more problematic than ADM, TLM gradients;
282        issue is related to forward mismatch between g77 an ifort
283    o pkg/seaice: overhaul of thermodynamics
284     - growth.F and groatb.F are replaced by new routine seaice_growth.F
285     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
286     - move a few global fields out of SEAICE.h into seaice_growth.F and
287       make them 2D (FICE/QNETO/ ...)
288     - remove FO (it is the same as QNETO)
289     - introduce a few local fields to avoid modifying external fields such
290       as atemp, etc.
291    
292    checkpoint58s_post
293    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
294      changed exf_set_gen.F so that
295        genperiod=0 means input file is one time-constant field and
296        genperiod=-12 means input file contains 12 monthly means
297    o CG2D: use pre-computed solver main-diagonal (stored in common block);
298      this affects truncation error ; generate new output file for exp. which
299      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
300        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
301        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
302        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
303        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
304        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
305    o start implementation of deep-atmosphere and anelastic formulation
306    o verification: remove 2nd copy of input files and use script "prepare_run"
307      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
308    o mom_common/vecinv/fluxform: fix a few initialisation isssues
309    o profiles: fix for multithreaded case
310    
311    o diagnostics: rename few diags:
312      s/'PRESSURE'/'RCENTER '/g
313      s/'TICE    '/'oceFreez'/g
314      s/'TAUX    '/'oceTAUX '/g
315      s/'TAUY    '/'oceTAUY '/g
316      s/'SWFLUX  '/'oceQsw  '/g
317      s/DIFx/DFxE/g
318      s/DIFy/DFyE/g
319      and add few ocean-forcing diagnostics:
320      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
321    o modifications to pkg/seaice/growth.F and budget.F, which change results of
322      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
323      as actual snow thickness.  It now refers everywhere to effective snow
324      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
325    
326    checkpoint58r_post
327    o modifications to pkg/seaice/growth.F, which change results of
328      lab_sea experiment: fixes pertain to melting snow over open water, to
329      masking EVAP under sea ice, and to using the correct AREA variable for
330      computations of EVAP, PRECIP, HSNOW, and GHEFF
331    o add ability to read bathy, salt, and theta using MNC (off by def)
332    o add flooding algorithm and advection of HSNOW for pkg/seaice;
333      both are turned off by default and do no change any results
334    o seaice advection with pkg/thsice: a step toward the use of non-linear
335      advection scheme, but #ifdef or commented out for now (requires more EXCH).
336    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
337      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
338      in natl_box (affects results @ truncation level: update output.txt)
339    o multi-threading and IO:
340      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
341      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
342        (needed to work with SingleCpuIO): tested in all verif. exp.
343    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
344      affects the results (but none of the verification test uses this scheme).
345    o Adding some pkg/diagnostics capability to pkg/seaice
346      (will certainly be subject to changes)
347    o ctrl: adding new control variables:
348      lwflux, lwdown, evap, snowprecip, apressure, runoff
349    
350    checkpoint58q_post
351    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
352      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
353      high_res_cube configuration by 4% on Columbia.
354    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
355      add (in global_with_exf/code) a version of EXF_INTERP_READ without
356      dynamical allocation (seems to work in multi-threaded).
357    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
358      single CPU io) so that TAF does not have to see EESUPPORT.h
359    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
360    
361    checkpoint58p_post
362    o obcs: stop if obcs is used with useCDscheme = .true.
363    o shelfice:
364     - fix a sign error so that no slip at shelfice interface works
365     - remove stop for combination non-hydrostatic code and shelfice. That does
366       not mean, that the results are correct, but at least they are numerically
367       stable
368    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
369    o added adjoint exch routined for all exch*3d* routines
370      and updated flow directives
371    
372    checkpoint58o_post
373    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
374      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
375    o change controling S/R for writing pickup file (new S/R do_write_pickup)
376      and clean-up reading/writing of pickup files.
377    o fix local version of read/write pickup (NH part) in rotating_tank/code
378    o simplify EXCH interface:
379     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
380     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
381    o added the regrid package
382    o shelfice:
383     - add a simple boundary layer scheme to reduce noise
384     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
385    
386    checkpoint58n_post
387    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
388       local variable (not in common block).
389    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
390      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
391      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
392        to work with SingleCpuIO.
393    o add "_d 0" to real constant of pkg/cfc subroutines ;
394       update exp. cfc_exemple & tutorial_cfc_offline output files.
395    o multi-threading and IO:
396      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
397        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
398      - barrier before and after reading.
399      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
400      - avoid using MDS_WRITELOCAL for LAND pkg output.
401      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
402        common-block variables ; Allows multi-threading with master-thread IO.
403    o change default MAX_NO_THREADS from 32 to 4 ;
404      and stop cleanly when MAX_NO_THREADS is too small.
405    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
406    
407    checkpoint58m_post
408    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
409       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
410    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
411       keep global_ocean.90x40x15 (for AD testing) with former secondary test
412       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
413    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
414        add MITgcm_tutorials (= code + all the tutorials)
415    o ecco, option to compute cost for total ssh (mean+anom)
416    o consistent with addition of ptracer and ssh in pkg/profiles
417    o profiles: adding ptracer and ssh
418    o testreport: change multi-test output-file name
419      (from output.txt.{name} to output.{name}.txt)
420    o profiles: now ok for mutli-tiles case
421    o seaice: add 4 parameters for different advection schemes for area,
422      (effective) seaice thickness, enthalphy, and snow height. Their default
423      is the standard parameter SEAICEadvScheme
424    o calc_gw:
425     - add cosFacU in zonal viscous flux (harmonic.visc.).
426     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
427       of tutorial_plume_on_slope.
428    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
429    o calc_gw: true flux-form, account for horizontal grid spacing.
430      update rotating_tank results, but not plume_on_slope (affected at
431      truncation level, 11 digits).
432    
433    checkpoint58l_post
434    o calc_gw:
435     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
436     - remove side-drag for now (need to fix it); update plume_on_slope results.
437     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
438    o commit code to make SST/SSS weights spatially variable
439      (based on either variable in-situ or variable initial T/S weights)
440    o pkg/ecco:
441      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
442        now based on horizontally varying weights wthetaLev, wsaltLev
443      * cost_averagesflags now returns year indices in addition to day, month
444      * sflux balance is performed on annual basis
445        (sflxumm, sfluxmm2, bal_sfluxmm)
446      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
447        including separate counting and multipliers
448    o pkg/rbcs
449      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
450    
451    checkpoint58k_post
452    o testreport:
453     - always build in dir. "build" (if not there, mkdir build instead of building
454       & running in input)
455     - run in dir run (if it exists), in build otherwise.
456     - call prepare_run (if input/prepare_run exists)
457     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
458    o pkg/exf modifications to interpolation and rotation routines for more
459       reasonable treatment of North Pole singularity: for tracers North Pole
460       value is set to northernmost zonal-mean value, for zonal velocity it is
461       set to zero, and for meridional velocity it is set to northernmost value.
462    o pkg/exf/exf_check_range.F
463     - add tile index to diagnostics and move stop statement to the very
464       end of the routine.
465    o pkg/diagnostics: (diagnostics_main_init.F)
466      define title of isomorphic variables according to the current config.
467    o pkg/thsice with pkg/seaice dynamics:
468    - fix domain of computation (interior only, required for exf) and do exchanges
469    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
470    o towards a standard way of dealing with multi-threading in MONITOR
471      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
472    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
473       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
474    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
475    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
476    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
477       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
478    o tracer advection:
479     - clean-up and simplify calc_common_factors.F
480     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
481       advection subroutine (but still not used within DST advection S/R)
482    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
483    
484    checkpoint58j_post
485    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
486      from file (collects calls previously in FORWARD_STEP)
487    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
488    o adjoint store dir. adjusted accordingly
489    o genmake2
490      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
491    
492    checkpoint58i_post
493    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
494      on wind stress (SEAICEstressFactor defaults to 1.)
495    o Total number of Timers is finite (<=40): comment out 2 non-essential one
496      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
497    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
498      on CS-grid: no longer loosing mass.
499    o exf & curvilinear-grid: no longer modify longitude xC & xG.
500    o pkg/ggl90: fix sloppy output and fix a bug
501    o pkg/seaice: added SEAICEuseEVPpickup parameter
502      - Set to false in order to start EVP solver with
503        non-EVP pickup files when using SEAICEuseEVP
504      - fix sign error in diffusion in seaice_calc_rhs
505    
506    checkpoint58h_post
507    * Modifications for bottom topography control
508      o replace hFacC by _hFacC at various places
509      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
510      o add non-self-adjoint cg2d_nsa
511      o update autodiff support routines
512      o re-initialise hfac after ctrl_depth_ini
513      o works for 5x5 box, doesnt work for global_ocean.90x40x15
514    * Adding verification for 5x5 box (4-layer) bottom topography control
515    
516    checkpoint58g_post
517    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
518       used for mean seasonal cycle, mean diurnal cycle); add an example
519       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
520    o pkg/ggl90:
521      - add parameter (minimum surface kinetic energy)
522      - fix bug (avoiding division by zero)
523    o couple pkg/thsice to pkg/seaice:
524      - modify advection in seaice to accomodate new scalar fields to be advected
525      - only muliDimAdection scheme work with seaice/thsice
526      - mapping of thsice-variables to seaice-variables, back and forth
527      - does not break the verification experiments, but does not give the
528        desired results either
529    o pkg/seaice
530      - make (default) second order advection a bit less confusing?
531    
532    checkpoint58f_post
533    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
534      to pkg/seaice):
535      - new routines thsice_map_exf and thsice_get_exf provide the interface
536      - add an additional formal parameter to thsice_solve4temp
537    o pkg/exf:
538      - add new fields wspeed, snowprecip (to be able to couple to thsice)
539      - correct Stefan-Boltzmann constant
540      - new parameter for longwave surface emittance
541      - separate some stuff from exf_bulkformulae into new routines  
542        exf_radiation, exf_wind
543      - add new parameters and constants: longwave emissivity for ocean, ice
544        and snow, evaporation parameters over ice
545      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
546        either wind from stress or stress from wind
547    o pkg/thSIce:
548    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
549    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
550       and THSICE_CALC_THICKN
551    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
552    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
553      to make debugging easier.
554    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
555    o pkg/bulk_force:
556      - clean-up comments and parameters ;
557      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
558    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
559      generate new output for test-experiment: aim.5l_cs.thSI
560    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
561      testreport accordingly
562    
563    checkpoint58e_post
564    o SEAICE_CGRID adjoint done
565    o R_STAR adjoint implemented.
566      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
567      * need to sort out init. of h0facc, etc.
568    o Make pkg/profile fully independent of ecco,cost, etc. stuff
569      to be able to use it in pure forward.
570    
571    checkpoint58d_post
572    o upgrade simple test-experiment to tutorial example:
573     step.1: duplicate the experiment and (step.2) will remove the old copy.
574      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
575      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
576      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
577      tutorial_global_oce_biogeo    <- copy of dic_example
578      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
579      tutorial_plume_on_slope       <- copy of plume_on_slope
580      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
581      tutorial_global_oce_optim     <- empty for now (David ?)
582      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
583     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
584    o correct a sign problem in cost_scat.F
585    o obcs and ptracers: fix boundary conditions for advections schemes
586      with larger stencil
587    o thsice adjoint: start
588    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
589      completeness
590    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
591      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
592    o ptracers adjoint:
593      * avoid extensive recomputatations
594      * fix missing re-init. of gptr (missed by TAF)
595    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
596      me to turn off the excessive output to STDOUT that this package produces
597    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
598      and add those terms in Vector-Invariant formulation.
599    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
600      if the control period (xx_hfluxperiod etc) is 0
601    o in profiles pkg, clean routines and fix details
602    o in ecco pkg, reading ssh data:
603      fix problem in case the model does not start at iter0=0
604    o fix mnc-pickup/restart for ptracers
605    o new package prifiles:
606      code to compute profile-based cost by Gael Forget
607      (modifs in ecco, ctrl, autodiff)
608    o Benign bug fix in initialization (spotted by M. Mazloff) of
609      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
610    
611    checkpoint58c_post
612    o adjoint: finish NLFS adjoint and provide reference output in
613      verification/global_ocean.90x40x15/results_ad_nlfs
614    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
615      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
616      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
617      with SEAICE_CGRID defined.
618    o move calendarDumps from "data" to "data.cal" and clean-up the code
619      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
620    o add useEXF & useCAL flags (for now, set in hard-coded way)
621    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
622      (were missing in NH mode, and wrong in quasihydrostatic mode).
623      waiting for Chris updated version of calc_gw to add those CALLs.
624    o fix bug in quasihydrostatic S/R ;
625      add a test for this option: global_ocean.90x40x15.qshyd
626    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
627      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
628    o add on/off flag useOffLine for package OFFLINE
629    o seaice:
630      - modify advection so that it works also on the C-grid
631      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
632        problem in multi-tile runs with C-grid
633      - add flags for clipping ice velocities and/or masking solver forcing
634      - fix drag (ocean on ice) formulation and a bug that caused noise in the
635        C-grid solver
636      - added a few comments to seaice_diffusion.F
637      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
638        are now exclusive)
639      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
640        required re-ordering the code a little:
641       + make DAIRN global variable (defined in SEAICE)
642       + move computation of the viscosities eta and zeta into a new separate
643         routine (because I need to recompute them in seaice_ocean_stress.F)
644    
645    checkpoint58b_post
646    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
647      update output.txt of exp. aim.5l_cs.thSI
648    o various mnc cleanups and improvements:
649      + shrink lookup tables by factor of ~4
650      + better error reporting when running out of lookup space
651      + able to handle longer path/file names (up to 500 chars)
652    o adjoint:
653      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
654      - TBD: "hidden" mom_vecinv recomp. in dynamics
655    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
656     (allow to differentiate between forcing components using new integer flags:
657      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
658     and add new flag to put Dissipation tendency out of Adams-Bashforth.
659    o ecco
660      - enable trend removal from SSH anomaly obs.
661    o adjoint
662      - a fix for PmEpR when #undef EXACT_CONSERV
663      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
664      - try to fix "hidden" recomp. in forward_step for NLFS
665        (NLFS seems broken sometimes after I checked it in)
666    o seaice:
667     - add c-grid version of the dynamic solver:
668       + three new routines that are the c-grid substitute lsr, dynsolver
669         and ostres
670       + put a few fields that were local to dynsolver into global common
671         blocks, so that I can move the computation of stresses etc into
672         seaice_lsr (saves coding but may break the adjoint).
673     - replace more hardwired parameters by runtime parameters
674     - add ice masks that mask the rhs of the implicit solvers where there
675       is no ice (commented out in seaice_dynsolver, because i am not sure
676       if this works properly), eventually this should replace the clipping
677       of ice velocities in seaice_dynsolver to +/-40cm/s.
678    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
679      include it only where its needed
680    o move balancing of fluxes before the call of external_forcing_surf
681    o seaice:
682      - correct units of turning angles (now they are really in degrees)
683      - move computation of GWATX/Y out of main routine into dynsolver
684      - initialize GWATX/Y in seaice_init
685    o Apply mask on Fresh-Water flux (needed for SSH forcing).
686      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
687    o seaice: add runtime flags for turning angles (default to zero)
688    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
689      and trend from exf forcing and ctrl control adjustments
690    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
691      (since checkpoint57x_post)
692    o change the default rotation period to 86164.s = the Earth rotation
693    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
694      and based on a reference stratification. Tested within hs94.cs-32x32x5.
695    o seaice advection: add code for choosing between the default (2nd order
696      central differences) and multiDim advection schemes provided by
697      pkg/generic_advdiff
698    o seaice:
699      - removed all references to SEAICE_GRID.h fields from
700        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
701        (cubed-sphere configuration will change a little)
702      - grid computations in seaice_init are obsolete now.
703      - cleaned up code a little so that is easier to read (hopefully).
704      - added new (better?) discretizations of default advection and diffusion
705        (turn on with SEAICEuseFluxForm)
706      - replace 1 in 3d global fields by kSurface in growth.F
707      
708    checkpoint58a_post
709    o seaice:
710      - bug fix in advect.F
711    o shelfice:
712      - separate shelfice load anomaly from pload (breaks with time
713        dependent forcing), => introduce constant field shelficeLoadAnomaly.
714        Its default is 0., but it may be computed more cleverly from (unknown)
715        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
716        done offline. A good approximation of the pressure load anomaly is
717        necessary to avoid large initial adjustment processes underneath
718        deep-reaching shelfice.
719      - small fix in ISOMIP shelfice_thermodynamics
720      - add more sophisticated thermodynamics of Hellmer (1989), this is
721        now the default
722      - give a few constants more intuitive names
723    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
724      if bulk formulae are used in long integration (especially EmPmR). Turn
725      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
726      if balancePrintMean, the imbalance that is substracted is printed to
727      STDOUT.
728    o fix bug (typo) in obcs_apply_eta.F
729    o add a new package shelfice which enables us to model the circulation
730      underneath shelf-ice with draughts of hundreds of meters.
731     - works
732     - to do: + include improved thermodynamics
733              + check whether kSurfC (from model/inc/SURFACE.h) can be used
734                instead of new field kTopC
735              + can we use topoFile, Ro_surf and existing code in ini_depth.F
736                instead of new field R_shelfIce and new code in ini_depth.F
737                and ini_mask_etc.F?
738              + adjust vertical mixing schemes?
739    o seaice pkg:
740     - add a cpp-flag to include a simple formula for a salinity dependent
741       freezing point of sea water at the surface
742     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
743       meridional stresses are now different (and hopefully correct)
744    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
745       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
746       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
747    o pkg/diagnostics: add options and parameters for regional-statistics
748       diagnostics ; define regions by reading a region-mask from a file
749       (might add other options later)
750    o pkg/bulk_force:
751     - add option and parameters to use AIM surface-flux formulae.
752     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
753       others forcing fields (defined in PARM05, parameter file "data") are loaded
754       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
755     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
756     - use the right EXCH call for uwind,vwind (to work on CS-grid).
757     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
758       and parameters (note: calcWindStress replaces .NOT.readwindstress).
759     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
760    
761    checkpoint58
762    o add "--embed-source" option to genmake2 which, when the supporting
763      tools can be compiled (as determined by genmake2) will turn on the
764      embed_files package which then embeds the entire MITgcm source code
765      (*.[fFhc] + Makefile) used for the build within the executable
766      - requested by CNH but off by default
767      - adds a paltry <9MB to the mitgcmuv executable in most cases
768      - only writes the output when useEMBEDSRC in eedata is true
769    o clean up 3-dim. relaxation codes:
770      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
771      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
772      * Thanks to Tom Haine for testing!
773    
774    checkpoint57z_post
775    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
776      affects output (@ truncation level) of exp. plume_on_slope ; updated.
777    o fix the pickup behavior for obcs in combination with ptracers
778    o fix a bug in ptracers_external_fields_load
779    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
780      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
781    o transfered surface NH pressure to eta field (if exactConserv).
782    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
783         and update lab_sea output.txt file.
784    o completing 3-dim. relaxation code: additional term
785         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
786      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
787      * At compile time, in "EXF_OPTIONS.h" set
788          #define  ALLOW_CLIMTEMP_RELAXATION
789          #define  ALLOW_CLIMSALT_RELAXATION
790      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
791          tauThetaClimRelax3Dim = 15552000.0,
792          tauSaltClimRelax3Dim  = 15552000.0,
793      * 3 cases:
794          1) Use a constant-in-time 3-dim. field
795          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
796          3) Real-time relax. to time-evolving prescribed field
797    o Adding Laplacian-type smoothness constraint on
798      initial and boundary (forcing) controls (ic, bc)
799      * enable at compile-time via
800        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
801      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
802      * Absolute scale somewhat unclear so far
803      * no area weighting was included since no other cost term does so far
804    
805    checkpoint57y_post
806    First step for a NLFS adjoint
807    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
808    o new init. routines for calc_r_star, calc_surf_dr
809    o still need to deal with ini_masks_etc
810    o testreport seemed happy
811    checkpoint57y_pre
812    
813    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
814    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
815    o add new offset feature to offline pkg (plus minor cleanup)
816    o cfc fixes for final year of integration
817    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
818      be in GCHEM_OPTIONS).
819    
820    checkpoint57x_post
821    o fix testreport Pb in multiple test experiment.
822    o cleanup our namelist syntax in verification:
823      - make it more F95 standards compliant (some work still needed)
824      - allows the vast majority of our tests to work with gfortran
825    o Non-Hydrostatic:
826     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
827     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
828    o Allow to apply AB on T,S rather than on AB(gT,gS):
829     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
830     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
831       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
832     - need a "clever" read_pickup to restart from the other AB formulation
833    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
834    o remove some unused variables (reduces number of compiler warnings)
835    o adjoint
836      * Disable useVariableViscosity for adjoint for time being
837        (there are a number of extensive recomputations)
838      * Initialize certain variables needed for adjoint
839    
840    checkpoint57w_post
841    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
842                 fix the singleCpuIO RS version of MDSWRITEFIELD
843       and add a WARNING if using globalFiles=T with multi-processors.
844    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
845      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
846    o tracer advection scheme:
847      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
848       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
849       was not very convenient).
850      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
851       (further tests needed for the implicit DST & Flux-Limiter schemes).
852    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
853      and sRef for convenience, handy, when you want to initialize
854      ptracers in a large domain with a constant non-zero value. Also,
855      untangle ptracers_init.F a little.
856    
857    checkpoint57v_post
858    o change dome exp. to use variable viscosity in side-drag terms.
859    o remove all the files from the cfc_offline test since they are now
860      incorporated into tutorial_cfc_offline which has been producing
861      identical results for a few days of testing
862    o add new parameter: sideDragFactor to enable half-slip-side BC
863      and change side-drag S/R to use viscosity from mom_calc_visc
864      (can switch back by setting sideDragFactor=0.); affects results at
865      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
866       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
867    o vorticity & strain are now computed without masking, to account for
868      no-slip-side BC in variable viscosity calculation ; mask is applied
869      anyway later on, before computing advection/coriolis terms.
870    o modify exp4 to test new obcs support for reading from external files
871      and for passive tracers
872    o fix behavior of ptracers_monitor when monitor output is written to a
873      netcdf-file; still not independent of monitor.F (writes in the same
874      file).
875    o change default value of tRef (put a uniform, meaningful value for ocean
876      & atmos) and initialize sRef (was missing, as Martin mentioned).
877    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
878      to be proportional to enstrophy dissipation length.  Thus,
879       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
880      This is now consistent with Smagorinsky and with the manual.
881    
882    checkpoint57u_post
883    o OBCS and PTRACERS: add open boundary support for passive tracers
884      - either use homogenous (pseudo) v.Neumann conditions or prescribe
885        OB-values from file; this is not different from the way theta and salinity
886        are treated
887      - however, Orlanski-radiation conditions are not supported, and the model
888        will stop if you use pTracers and Orlanski at the same time.
889      - beefed up the rountine obcs_external_fields_load: now only those open
890        boundary values are overwritten with values from files for which there
891        are really files, otherwise the OB-fields remain untouched. This makes
892        it possible to use different OBs at different ends of the domain (as
893        with EXF)
894    o reduce number of exch calls in shap_filt (s2).
895    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
896      truncation level) 4/5 MLAdjust test results (11&12 digits match).
897    
898    checkpoint57t_post
899    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
900    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
901      same truncation, independent of the face number: affects affects several
902      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
903    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
904      note that biharmonic viscosity + no-slip was not tested in any experiment.
905    o fix bug in non-linear free-surf side-drag ; generate new output for
906      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
907    o make mnc honor the writeBinaryPrec flag for most kinds of output
908    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
909    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
910      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
911    o add brackets in multi-terms sum to get same truncation, independent of
912      the face number (manage to get exactly same value of gU,gV at the cs-edge)
913      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
914    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
915      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
916      a maximum grid-scale Reynolds number.  Also, changes all length calculations
917      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
918      Suggested values of viscosity parameters found in mom_calc_visc.
919      Many new viscosity diagnostics available.
920    
921    checkpoint57s_post
922    o Add clearing-house for viscosity calculations, mom_calc_visc and
923      correct numerous bugs in LeithD and Smagorinsky discretizations.  
924      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
925      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
926      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
927      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
928      The Strain-Tension form is now called with useStrainTensonVisc=.true.
929      ViscAhStrain and viscAhTension are now retired.
930    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
931    o In response to JMC's bug report, genmake2 now ignores any soft-links
932      that it finds in the *current* directory when searching for files.
933      Soft-links found in any other source directories will still work as
934      they did before.
935    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
936      a C routine to unlimit the stack size
937    o mnc-ify pkg/aim snapshot vars
938    o mnc-ify pkg/land as requested by Daniel
939    o various changes to mnc including:
940      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
941      - output can now be grouped so that all files within a group
942          change the ITER portion of their names in lock-step together
943      - can now read ("global") PER-FACE (in addition to PER-TILE) files
944          and works with both EXCH1 and EXCH2 (but needs more testing)
945      - writing works for all verification test cases w/ g77 on Linux
946    
947    checkpoint57r_post
948    o make MNC variable initialization happen earlier
949    o add diagnostics for (almost) each term of the momentum Eq.
950    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
951    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
952    o remove MINIMAL_TAVE_OUTPUT option ;
953      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
954    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
955      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
956    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
957    o add time-dependent SST, SSS control
958    o cost terms in ecco/ modularized (new cost_generic.F)
959    o cost_averages routines are modularized (new cost_averagesgeneric.F)
960    o new infrastructure for seaice model vs. obs misfits in seaice/
961      * driver from the_main_loop.F is seaice_cost_driver.F
962      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
963      * gradient check in Exp. 6a of natl_box_adjoint/
964    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
965      (see README file)
966    
967    checkpoint57q_post
968    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
969    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
970      - bug was reported by Jean-Michel and Ian Fenty
971    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
972      update exp. cpl_aim+ocn output.
973    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
974      Needed for high-res. runs with large global files
975      to be able to limit tapelev size
976    o Changed some tests for adjoint:
977      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
978      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
979      * global_ocean.90x40x15/ back to default 3-level checkpointing
980    o Modifications to enable scripted COMMON to MODULE conversion
981      * verification/OpenAD/code/ has necessary scripts and description;
982      * converts, compiles and runs successfully;
983    
984    checkpoint57p_post
985    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
986    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
987      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
988    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
989    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
990      (was already the case for dissipation with mom_vecinv,
991       and also the case for grad.PhiHyd when staggered-timeStep)
992      This will allow to put dissipation out-off the AB time-stepping.
993     Unfortunately, affects truncation error. Update output of exp. that "fails"
994      (cg2d matching number) and leave the others for later: front_relax(10),
995      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
996      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
997    
998    checkpoint57o_post
999    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1000      (2) its ready to be documented during the 20050801 DocFest
1001    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1002      for ideal_2D_oce and lab_sea on linux_ia32_g77
1003    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1004      in global1x1_tot/code_seaice_adj to access indices 32, 33
1005      (worth another tag)
1006    
1007    checkpoint57n_post
1008    o adding precip control xx_precip 32
1009    o adding swflux control xx_swflux 33
1010    o Replacing 10 forcing penalty cost routines by 1 generic.
1011    o Implementing partitioning in time-mean and variable adjustment
1012      for atmos. state.
1013    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1014  o in natl_box_adjoint:  o in natl_box_adjoint:
1015    * updated: results_bulk/    * updated exp 1 to 10
1016    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1017    o updated global1x1/*_seaice_adj/
1018      to incorporate latest changes
1019    o enable useSingleCpuIO for mdsio vector routines
1020      (applies in particular to tapelev I/O)
1021    o removed inefficient K-loop in all active_file*control*.F
1022    
1023  checkpoint57m_post  checkpoint57m_post
1024  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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