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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.843 by jmc, Thu Jun 21 00:56:25 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  checkpoint59d
8  o moved ptracer ctrl index 17 -> 32  o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
9     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
10     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
11    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
12     and change default value of parameter "GM_Small_Number";
13     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
14       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
15       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
16    o pkg/ecco: cost function when applying pkg/smooth to controls
17    o pkg/ctrl: add forcingPrecond run time parameter
18    o pkg/seaice:
19     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
20     - fix bug in metric terms of u-equation in LSR solver (implicit part),
21       changes verification/lab_sea
22     - rearrange implicit part of u-equation in LSR solver to make it easier to
23       read, understand, and debug. This causes changes at the truncation level.
24     - fix (serious) bug in the boundary conditions (sign error in the implicit
25       part) of the LSR solver. Changes all LSR results.
26     - fixed problem with HSNOW initialization to avoid thick snow when AREA
27       is initilized with small values - does not change lab_sea results.
28     - added HsnowFile initialization capability
29    o pkg/smooth: addition to model/src and pkg/ctrl so allow
30     initialization of pkg/smooth and application to control vector
31    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
32    o dependencies: pkg/profiles requires pkg/cal
33    o pkg/profiles:
34     - added option ALLOW_PROFILES_GENERICGRID
35         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
36         that interpolation information (grid points and coefficients) is provided
37         within the netcdf input files.
38         -> sample matlab scripts can be found in MITgcm_contrib/gael
39         that allow you to prepare netcdf input files.
40     - also modified: cleaner include statements, cleaner error print statements,
41       cleaner stops when error, and more tests of the netcdf input files consistency.
42    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
43    o pkg/seaice:
44     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
45       requires a new routine: seaice_diagnostics_fill.F
46     - make sure that seaice does not move if not forced (pressure replacement
47       method, Hibler and Ip, 1995), changes results
48     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
49     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
50       It is turned off by default (=-1.), because it changes the results.
51     - make it possible to read AREA from a file, too.
52    
53    checkpoint59c
54    o add S/R and diagnostics for oceanic mixed-layer depth
55    o move GMRedi call after all vertical mixing schemes (including KPP)
56    o pkg/thsice:
57     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
58      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
59    o pkg/obcs:
60     - bug fix for balance code
61    o pkg/seaice:
62      - allow values of SEAICE_elasticParm > 1
63      - add new parameter SEAICE_evpTauRelax as an alternative
64        to SEAICE_elasticParm
65      - make lsr boundary conditions free slip (by default), changes result
66      - add code for no slip boundary conditions for lsr
67      - set minimum of zeta to zero (and not 4e8) (changes results)
68      - add a cap on AREA after advecting AREA if seaice_growth is not called
69    o change calculation of Visbeck K:
70      - no longer depend on tapering scheme; instead, compute slope (limited
71        by GM_maxSlope). this is equivalent to what was comuted before with
72        clipping or linear tappering.
73      - fix vertical averaging (wrong by 1/2 level)
74      - leave the old version (but will not be maintained) within
75        #ifdef OLD_VISBECK_CALC / #endif
76      - update output of exp. ideal_2D_oce
77    o change error catch in calc_r_star to improve vectorization
78    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
79      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
80    o adjoint:
81      Re-organized adjoint checkpointing according to Matt Mazloff
82      (but with modifs/completions/cleanups)
83      Storing is now bundled into large arrays to optimized I/O
84      (and second step in cleanup of the_main_loop)
85    
86    checkpoint59b
87    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
88      - export/import (between ocean & coupler) fields needed for ocean DIC.
89    o pkg/seaice:
90      - get rid of three more exchanges seaice_calc_viscosities (required
91        different loop boundaries in seaice_lsr and seaice_ocean_stress)
92      - bug fix in seaice_ocean_stress (update of lab_sea required)
93      - reduce loop boundaries to necessary minimum also in seaice_evp
94      - go back to the old way of computing deltaC/Z as the adjoint likes that
95        better
96    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
97      passive tracer to an Age Tracer) + update output.txt
98    o pkg/exf:
99      - implement A-grid / C-grid selection for wind-stress input files.
100      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
101      for now, in exf_bulk_largeyeager04.F only :
102      - change implementation for case where windspeed + 2. components wind-stress
103        are read-in. AND use rhoConstFresh to convert evap.
104    o pkg/seaice:
105      - use correct EXCH_UV for wind-forcing (on A-grid).
106      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
107        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
108    o pkg/exf:
109      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
110      EXF_INTERPOLATION:
111      - merge global_with_exf/code version of exf_interp_read.F
112        to the main code ;
113      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
114        reading the file ; Important: This options needs to be defined to recover
115        previous code.
116        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
117      - no longer loose real*8 precision along the way when using exf_iprec=64.
118    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
119      - change discretisation of evp-solver in order to avoid another exchange
120        (changes lab_sea) and clean up a little
121      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
122        help the adjoint (this also changes the results slightly)
123      - add a few "_d 0" where they had been missing in seaice_evp.F
124      - cleaning up: remove unused seaice_calc_rhs.F
125    o pkg/exf: some cleaning-up:
126      - change various "constants" into runtime parameters
127      - cleaned-up Large&Yeager04 routine which should eventually
128        replace exf_bulkformulae.F (changed names of S/R and CPP)
129        and merged various ALLOW_ATM_WIND options
130     only used with thsice pkg (in thsice_get_exf.F):
131      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
132        which are used when useStabilityFct_overIce=TRUE (= the default)
133      - change default values of ice & snow emissivity and scale downward LW
134        by ice & snow emissivity.
135    o pkg/thsice:
136     fix few little problems, in thsice_calc_thickn.F:
137      - growth vertically (and not laterally) if iceFrac == iceMaskMax
138      - melt only laterally if hIce < hThinIce (as the comments say)
139      and in thsice_extend.F:
140      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
141      - start to form ice as soon as the minimum ice-volume is reachable.
142     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
143      and cpl_aim+ocn
144    o pkg/kpp
145     - move computation of surface related input fields to KPP into a new
146       subroutine kpp_forcing_surf.F
147     - remove wrong (within bi,bj loops) EXCH calls.
148     - little cleaning (add argument myThid in last position, cvs header ...)
149     - for now, fix conservation problem by exchanging KPPviscAz (may not
150       be the best fix)
151    o pkg/seaice
152     - check for inconsistent evp parameter/cpp-flag combination
153     - remove leftover errIO flat for obsolete name list error handling
154    o OpenAD
155     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
156    
157    checkpoint59a
158    o pkg/seaice: some parameter clarifications and a little bit of clean up
159    o pkg/thsice: rename run-time parameters:
160       himin       -> hIceMin
161       himin0      -> hThinIce
162       hihig       -> hThickIce
163       i0          -> i0swFrac
164       transCoef   -> bMeltCoef
165       frac_energy -> fracMelting
166      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
167       with default values (for now) that do not change the results.
168      remove old version of thsice vars advection in pkg/seaice.
169    o in FFIELDS.h:
170      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
171      - make pLoad & sIceLoad always available (but still only used if
172         ATMOSPHERIC_LOADING is #define).
173    o pkg/kpp: replaced _KPP_RL with _RL
174    o bug fixes for vertical diffusivity computations when both KPP and
175        3D diffusivity arrays are used.
176    o pkg/seaice: fix bug in evp solver, while doing that
177      - change (improve?) discretization of stress computations for both
178        cgrid-lsr and evp solver
179      - add a new routine to compute strain rates
180      - the above changes lab_sea results
181      - add no slip conditions for evp solver (off by default), lsr-version
182        may follow
183      - fix exchange for shear at Z-points (does not change lab_sea)
184      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
185        (to force the user to pick a time step since there is not "safe" way
186        of choosing it)
187      - add principal stress diagnostics
188      - rearrange fields for evp a little to avoid having to call a: too many
189        exchanges and b: exchanges for stress trensor components which we do
190        not have.
191      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
192        of evp, complete rewrite for lsr case (latter is does not yet work
193        in all cases)
194    o pkg/kpp: add code to have mixing in shelf ice caverns
195      - add myThid to all kpp routines (long overdue)
196    
197    checkpoint59
198    o pkg/exf:
199      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
200        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
201      - move exf header files from lower_case.h to UPPER_CASE.h ;
202        add missing cvs Header & Name
203      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
204      - add namelist param. selectStressGridPosition, exf_monFreq
205      - retire many _CLIM routines, and remove data.exf_clim
206        + params moved to data.exf
207        + climsst, climsss now handled by exf_set_gen, i.e.
208          climss?period=0 refers to constant field,
209          climss?period=-12 to monthly forcing
210      - split up namelists in data.exf
211    o pkg/seaice:
212      - remove seaice_exch and seaice_exch_uv
213      - remove superfluous exchange of theta
214      - add myThid to seaice_budget_ocean/ice
215      - add new interface for atmospheric wind forcing (C-grid only)
216        + new routine
217        + two new field (taux, tauy for stress over ice)
218        + removed one global field (DAIRN) for C-grid case only
219    o pkg/thsise
220      - 2nd set of modifs for thsice adjoint in conjunction with exf
221    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
222    
223    checkpoint58y_post
224    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
225      vertical diffusivity, similar to that in MOM4; turned on using
226      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
227      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
228    o Added capability for 3D specification of background vertical diffusion
229      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
230      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
231      "data" file that contains the 3D vertical diffusivity coefficients.
232    o ice dynamics (pkg/seaice) with thsice thermodynamics:
233      - add code within pkg thsice to advect & diffuse sea-ice fields
234      similar to (and will replace) what has been added in  seaice_advdiff.F,
235      but: - conserving Mass, Heat & Salt.
236           - better when using non-linear advection scheme (not yet fully tested)
237           - can also be used in atmospheric set-up (for now, only the diffusion).
238    
239    checkpoint58x_post
240    o IO option for global-file compact format:
241      - add options when generating topology (utils/exch2/matlab-topology-generator)
242      - add I/O capability (pkg/mdsio).
243      - adapt utils/matlab/rdmds.m to read this format.
244      for now long-line format not yet supported by pkg/mdsio (& exch2).
245    o shelfice: add a few diagnostics
246    
247    checkpoint58w_post
248    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
249      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
250      (and replace horiVertRatio in NH code).
251      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
252                         and tutorial_plume_on_slope (sensitive to truncation)
253    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
254      directly to drive seaice model (C-grid only)
255    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
256     - reintroduce computation of wind from stress,
257     - compute tau (in exf_bulkformulae.F) from windstress averaged to
258       mass points to avoid tau = 0
259     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
260    o rdmnc.m: make it work with "global" files created with gluemnc
261    o rdmnc.m : some improvements in dealing with singleton dimension
262      (tested on all testreport mnc output files).
263    o genmake2: disable pkg/profiles if netcdf test fails.
264    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
265    o move call to cal_readparms up to make calendar parameters/variable available
266      to all packages
267    
268    checkpoint58v_post
269    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
270      useDynP_inEos_Zc tested.
271    o pkg/exf: changes to properly interpolate/mask/scale initial fields
272    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
273      and portions thereof.  See read_cs.txt for description and examples.
274    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
275      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
276      following the great-circle arc between those 2 points.
277    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
278      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
279    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
280     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
281     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
282     - still needs work (not working with some options ; efficiency to improve)
283       and serious testing.
284     - use this scheme for temperature & salinity in 2 advection test exp.:
285       advect_xy & advect_xz, respectively.
286    
287    checkpoint58u_post
288    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
289    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
290    o testreport: add option "-skipdir" to skip some test.
291    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
292      momentum calculation.
293    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
294    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
295      remove checkpoint.F and the_correction_step.F (no longer used);
296      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
297    o add option (linFSConserveTr) to correct for tracer source/sink due to
298      Linear Free surface
299    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
300    o pkg/thsice: fix reading mnc-pickups
301    
302    checkpoint58t_post
303    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
304    o pkg/mdsio:
305     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
306       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
307       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
308     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
309     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
310       either MDS_READ_FIELD or MDS_WRITE_FIELD )
311     - new S/R (to replace MDSWRITEMETA), which allows to write more
312       informations (variable names, time ...) to meta files.
313     - modify rdmds.m to give back the meta file content.
314    o pkg/diagnostics: change vertical interpolation to be safer, and more
315       flexible (define p-levels to interpolate to in data.diagnostics);
316      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
317       diagnostic pointer.
318    o pkg/seaice: more cleaning up of seaice_growth, added many comments
319    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
320    o fix multi-category seaice:
321     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
322       SEAICE_MULTICATEGORY
323     - fix short wave heat flux
324    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
325       and allow to use EVP solver. Change forward lab_sea: test both EVP
326       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
327    o Initial check-in of lab_sea adjoint
328      (very similar to natl_box_adjoint/code_seaice)
329      * used C-grid and EVP solver
330      * used KPP, GM/Redi
331      * uses inAdExact=.TRUE.
332      * gradient checks fail for both ADM and TLM
333        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
334        f.d. gradients actually seem more problematic than ADM, TLM gradients;
335        issue is related to forward mismatch between g77 an ifort
336    o pkg/seaice: overhaul of thermodynamics
337     - growth.F and groatb.F are replaced by new routine seaice_growth.F
338     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
339     - move a few global fields out of SEAICE.h into seaice_growth.F and
340       make them 2D (FICE/QNETO/ ...)
341     - remove FO (it is the same as QNETO)
342     - introduce a few local fields to avoid modifying external fields such
343       as atemp, etc.
344    
345    checkpoint58s_post
346    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
347      changed exf_set_gen.F so that
348        genperiod=0 means input file is one time-constant field and
349        genperiod=-12 means input file contains 12 monthly means
350    o CG2D: use pre-computed solver main-diagonal (stored in common block);
351      this affects truncation error ; generate new output file for exp. which
352      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
353        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
354        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
355        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
356        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
357        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
358    o start implementation of deep-atmosphere and anelastic formulation
359    o verification: remove 2nd copy of input files and use script "prepare_run"
360      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
361    o mom_common/vecinv/fluxform: fix a few initialisation isssues
362    o profiles: fix for multithreaded case
363    
364    o diagnostics: rename few diags:
365      s/'PRESSURE'/'RCENTER '/g
366      s/'TICE    '/'oceFreez'/g
367      s/'TAUX    '/'oceTAUX '/g
368      s/'TAUY    '/'oceTAUY '/g
369      s/'SWFLUX  '/'oceQsw  '/g
370      s/DIFx/DFxE/g
371      s/DIFy/DFyE/g
372      and add few ocean-forcing diagnostics:
373      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
374    o modifications to pkg/seaice/growth.F and budget.F, which change results of
375      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
376      as actual snow thickness.  It now refers everywhere to effective snow
377      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
378    
379    checkpoint58r_post
380    o modifications to pkg/seaice/growth.F, which change results of
381      lab_sea experiment: fixes pertain to melting snow over open water, to
382      masking EVAP under sea ice, and to using the correct AREA variable for
383      computations of EVAP, PRECIP, HSNOW, and GHEFF
384    o add ability to read bathy, salt, and theta using MNC (off by def)
385    o add flooding algorithm and advection of HSNOW for pkg/seaice;
386      both are turned off by default and do no change any results
387    o seaice advection with pkg/thsice: a step toward the use of non-linear
388      advection scheme, but #ifdef or commented out for now (requires more EXCH).
389    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
390      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
391      in natl_box (affects results @ truncation level: update output.txt)
392    o multi-threading and IO:
393      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
394      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
395        (needed to work with SingleCpuIO): tested in all verif. exp.
396    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
397      affects the results (but none of the verification test uses this scheme).
398    o Adding some pkg/diagnostics capability to pkg/seaice
399      (will certainly be subject to changes)
400    o ctrl: adding new control variables:
401      lwflux, lwdown, evap, snowprecip, apressure, runoff
402    
403    checkpoint58q_post
404    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
405      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
406      high_res_cube configuration by 4% on Columbia.
407    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
408      add (in global_with_exf/code) a version of EXF_INTERP_READ without
409      dynamical allocation (seems to work in multi-threaded).
410    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
411      single CPU io) so that TAF does not have to see EESUPPORT.h
412    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
413    
414    checkpoint58p_post
415    o obcs: stop if obcs is used with useCDscheme = .true.
416    o shelfice:
417     - fix a sign error so that no slip at shelfice interface works
418     - remove stop for combination non-hydrostatic code and shelfice. That does
419       not mean, that the results are correct, but at least they are numerically
420       stable
421    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
422    o added adjoint exch routined for all exch*3d* routines
423      and updated flow directives
424    
425    checkpoint58o_post
426    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
427      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
428    o change controling S/R for writing pickup file (new S/R do_write_pickup)
429      and clean-up reading/writing of pickup files.
430    o fix local version of read/write pickup (NH part) in rotating_tank/code
431    o simplify EXCH interface:
432     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
433     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
434    o added the regrid package
435    o shelfice:
436     - add a simple boundary layer scheme to reduce noise
437     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
438    
439    checkpoint58n_post
440    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
441       local variable (not in common block).
442    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
443      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
444      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
445        to work with SingleCpuIO.
446    o add "_d 0" to real constant of pkg/cfc subroutines ;
447       update exp. cfc_exemple & tutorial_cfc_offline output files.
448    o multi-threading and IO:
449      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
450        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
451      - barrier before and after reading.
452      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
453      - avoid using MDS_WRITELOCAL for LAND pkg output.
454      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
455        common-block variables ; Allows multi-threading with master-thread IO.
456    o change default MAX_NO_THREADS from 32 to 4 ;
457      and stop cleanly when MAX_NO_THREADS is too small.
458    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
459    
460    checkpoint58m_post
461    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
462       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
463    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
464       keep global_ocean.90x40x15 (for AD testing) with former secondary test
465       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
466    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
467        add MITgcm_tutorials (= code + all the tutorials)
468    o ecco, option to compute cost for total ssh (mean+anom)
469    o consistent with addition of ptracer and ssh in pkg/profiles
470    o profiles: adding ptracer and ssh
471    o testreport: change multi-test output-file name
472      (from output.txt.{name} to output.{name}.txt)
473    o profiles: now ok for mutli-tiles case
474    o seaice: add 4 parameters for different advection schemes for area,
475      (effective) seaice thickness, enthalphy, and snow height. Their default
476      is the standard parameter SEAICEadvScheme
477    o calc_gw:
478     - add cosFacU in zonal viscous flux (harmonic.visc.).
479     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
480       of tutorial_plume_on_slope.
481    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
482    o calc_gw: true flux-form, account for horizontal grid spacing.
483      update rotating_tank results, but not plume_on_slope (affected at
484      truncation level, 11 digits).
485    
486    checkpoint58l_post
487    o calc_gw:
488     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
489     - remove side-drag for now (need to fix it); update plume_on_slope results.
490     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
491    o commit code to make SST/SSS weights spatially variable
492      (based on either variable in-situ or variable initial T/S weights)
493    o pkg/ecco:
494      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
495        now based on horizontally varying weights wthetaLev, wsaltLev
496      * cost_averagesflags now returns year indices in addition to day, month
497      * sflux balance is performed on annual basis
498        (sflxumm, sfluxmm2, bal_sfluxmm)
499      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
500        including separate counting and multipliers
501    o pkg/rbcs
502      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
503    
504    checkpoint58k_post
505    o testreport:
506     - always build in dir. "build" (if not there, mkdir build instead of building
507       & running in input)
508     - run in dir run (if it exists), in build otherwise.
509     - call prepare_run (if input/prepare_run exists)
510     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
511    o pkg/exf modifications to interpolation and rotation routines for more
512       reasonable treatment of North Pole singularity: for tracers North Pole
513       value is set to northernmost zonal-mean value, for zonal velocity it is
514       set to zero, and for meridional velocity it is set to northernmost value.
515    o pkg/exf/exf_check_range.F
516     - add tile index to diagnostics and move stop statement to the very
517       end of the routine.
518    o pkg/diagnostics: (diagnostics_main_init.F)
519      define title of isomorphic variables according to the current config.
520    o pkg/thsice with pkg/seaice dynamics:
521    - fix domain of computation (interior only, required for exf) and do exchanges
522    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
523    o towards a standard way of dealing with multi-threading in MONITOR
524      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
525    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
526       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
527    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
528    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
529    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
530       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
531    o tracer advection:
532     - clean-up and simplify calc_common_factors.F
533     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
534       advection subroutine (but still not used within DST advection S/R)
535    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
536    
537    checkpoint58j_post
538    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
539      from file (collects calls previously in FORWARD_STEP)
540    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
541    o adjoint store dir. adjusted accordingly
542    o genmake2
543      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
544    
545    checkpoint58i_post
546    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
547      on wind stress (SEAICEstressFactor defaults to 1.)
548    o Total number of Timers is finite (<=40): comment out 2 non-essential one
549      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
550    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
551      on CS-grid: no longer loosing mass.
552    o exf & curvilinear-grid: no longer modify longitude xC & xG.
553    o pkg/ggl90: fix sloppy output and fix a bug
554    o pkg/seaice: added SEAICEuseEVPpickup parameter
555      - Set to false in order to start EVP solver with
556        non-EVP pickup files when using SEAICEuseEVP
557      - fix sign error in diffusion in seaice_calc_rhs
558    
559    checkpoint58h_post
560    * Modifications for bottom topography control
561      o replace hFacC by _hFacC at various places
562      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
563      o add non-self-adjoint cg2d_nsa
564      o update autodiff support routines
565      o re-initialise hfac after ctrl_depth_ini
566      o works for 5x5 box, doesnt work for global_ocean.90x40x15
567    * Adding verification for 5x5 box (4-layer) bottom topography control
568    
569    checkpoint58g_post
570    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
571       used for mean seasonal cycle, mean diurnal cycle); add an example
572       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
573    o pkg/ggl90:
574      - add parameter (minimum surface kinetic energy)
575      - fix bug (avoiding division by zero)
576    o couple pkg/thsice to pkg/seaice:
577      - modify advection in seaice to accomodate new scalar fields to be advected
578      - only muliDimAdection scheme work with seaice/thsice
579      - mapping of thsice-variables to seaice-variables, back and forth
580      - does not break the verification experiments, but does not give the
581        desired results either
582    o pkg/seaice
583      - make (default) second order advection a bit less confusing?
584    
585    checkpoint58f_post
586    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
587      to pkg/seaice):
588      - new routines thsice_map_exf and thsice_get_exf provide the interface
589      - add an additional formal parameter to thsice_solve4temp
590    o pkg/exf:
591      - add new fields wspeed, snowprecip (to be able to couple to thsice)
592      - correct Stefan-Boltzmann constant
593      - new parameter for longwave surface emittance
594      - separate some stuff from exf_bulkformulae into new routines  
595        exf_radiation, exf_wind
596      - add new parameters and constants: longwave emissivity for ocean, ice
597        and snow, evaporation parameters over ice
598      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
599        either wind from stress or stress from wind
600    o pkg/thSIce:
601    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
602    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
603       and THSICE_CALC_THICKN
604    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
605    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
606      to make debugging easier.
607    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
608    o pkg/bulk_force:
609      - clean-up comments and parameters ;
610      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
611    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
612      generate new output for test-experiment: aim.5l_cs.thSI
613    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
614      testreport accordingly
615    
616    checkpoint58e_post
617    o SEAICE_CGRID adjoint done
618    o R_STAR adjoint implemented.
619      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
620      * need to sort out init. of h0facc, etc.
621    o Make pkg/profile fully independent of ecco,cost, etc. stuff
622      to be able to use it in pure forward.
623    
624    checkpoint58d_post
625    o upgrade simple test-experiment to tutorial example:
626     step.1: duplicate the experiment and (step.2) will remove the old copy.
627      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
628      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
629      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
630      tutorial_global_oce_biogeo    <- copy of dic_example
631      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
632      tutorial_plume_on_slope       <- copy of plume_on_slope
633      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
634      tutorial_global_oce_optim     <- empty for now (David ?)
635      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
636     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
637    o correct a sign problem in cost_scat.F
638    o obcs and ptracers: fix boundary conditions for advections schemes
639      with larger stencil
640    o thsice adjoint: start
641    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
642      completeness
643    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
644      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
645    o ptracers adjoint:
646      * avoid extensive recomputatations
647      * fix missing re-init. of gptr (missed by TAF)
648    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
649      me to turn off the excessive output to STDOUT that this package produces
650    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
651      and add those terms in Vector-Invariant formulation.
652    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
653      if the control period (xx_hfluxperiod etc) is 0
654    o in profiles pkg, clean routines and fix details
655    o in ecco pkg, reading ssh data:
656      fix problem in case the model does not start at iter0=0
657    o fix mnc-pickup/restart for ptracers
658    o new package prifiles:
659      code to compute profile-based cost by Gael Forget
660      (modifs in ecco, ctrl, autodiff)
661    o Benign bug fix in initialization (spotted by M. Mazloff) of
662      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
663    
664    checkpoint58c_post
665    o adjoint: finish NLFS adjoint and provide reference output in
666      verification/global_ocean.90x40x15/results_ad_nlfs
667    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
668      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
669      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
670      with SEAICE_CGRID defined.
671    o move calendarDumps from "data" to "data.cal" and clean-up the code
672      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
673    o add useEXF & useCAL flags (for now, set in hard-coded way)
674    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
675      (were missing in NH mode, and wrong in quasihydrostatic mode).
676      waiting for Chris updated version of calc_gw to add those CALLs.
677    o fix bug in quasihydrostatic S/R ;
678      add a test for this option: global_ocean.90x40x15.qshyd
679    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
680      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
681    o add on/off flag useOffLine for package OFFLINE
682    o seaice:
683      - modify advection so that it works also on the C-grid
684      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
685        problem in multi-tile runs with C-grid
686      - add flags for clipping ice velocities and/or masking solver forcing
687      - fix drag (ocean on ice) formulation and a bug that caused noise in the
688        C-grid solver
689      - added a few comments to seaice_diffusion.F
690      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
691        are now exclusive)
692      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
693        required re-ordering the code a little:
694       + make DAIRN global variable (defined in SEAICE)
695       + move computation of the viscosities eta and zeta into a new separate
696         routine (because I need to recompute them in seaice_ocean_stress.F)
697    
698    checkpoint58b_post
699    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
700      update output.txt of exp. aim.5l_cs.thSI
701    o various mnc cleanups and improvements:
702      + shrink lookup tables by factor of ~4
703      + better error reporting when running out of lookup space
704      + able to handle longer path/file names (up to 500 chars)
705    o adjoint:
706      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
707      - TBD: "hidden" mom_vecinv recomp. in dynamics
708    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
709     (allow to differentiate between forcing components using new integer flags:
710      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
711     and add new flag to put Dissipation tendency out of Adams-Bashforth.
712    o ecco
713      - enable trend removal from SSH anomaly obs.
714    o adjoint
715      - a fix for PmEpR when #undef EXACT_CONSERV
716      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
717      - try to fix "hidden" recomp. in forward_step for NLFS
718        (NLFS seems broken sometimes after I checked it in)
719    o seaice:
720     - add c-grid version of the dynamic solver:
721       + three new routines that are the c-grid substitute lsr, dynsolver
722         and ostres
723       + put a few fields that were local to dynsolver into global common
724         blocks, so that I can move the computation of stresses etc into
725         seaice_lsr (saves coding but may break the adjoint).
726     - replace more hardwired parameters by runtime parameters
727     - add ice masks that mask the rhs of the implicit solvers where there
728       is no ice (commented out in seaice_dynsolver, because i am not sure
729       if this works properly), eventually this should replace the clipping
730       of ice velocities in seaice_dynsolver to +/-40cm/s.
731    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
732      include it only where its needed
733    o move balancing of fluxes before the call of external_forcing_surf
734    o seaice:
735      - correct units of turning angles (now they are really in degrees)
736      - move computation of GWATX/Y out of main routine into dynsolver
737      - initialize GWATX/Y in seaice_init
738    o Apply mask on Fresh-Water flux (needed for SSH forcing).
739      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
740    o seaice: add runtime flags for turning angles (default to zero)
741    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
742      and trend from exf forcing and ctrl control adjustments
743    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
744      (since checkpoint57x_post)
745    o change the default rotation period to 86164.s = the Earth rotation
746    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
747      and based on a reference stratification. Tested within hs94.cs-32x32x5.
748    o seaice advection: add code for choosing between the default (2nd order
749      central differences) and multiDim advection schemes provided by
750      pkg/generic_advdiff
751    o seaice:
752      - removed all references to SEAICE_GRID.h fields from
753        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
754        (cubed-sphere configuration will change a little)
755      - grid computations in seaice_init are obsolete now.
756      - cleaned up code a little so that is easier to read (hopefully).
757      - added new (better?) discretizations of default advection and diffusion
758        (turn on with SEAICEuseFluxForm)
759      - replace 1 in 3d global fields by kSurface in growth.F
760      
761    checkpoint58a_post
762    o seaice:
763      - bug fix in advect.F
764    o shelfice:
765      - separate shelfice load anomaly from pload (breaks with time
766        dependent forcing), => introduce constant field shelficeLoadAnomaly.
767        Its default is 0., but it may be computed more cleverly from (unknown)
768        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
769        done offline. A good approximation of the pressure load anomaly is
770        necessary to avoid large initial adjustment processes underneath
771        deep-reaching shelfice.
772      - small fix in ISOMIP shelfice_thermodynamics
773      - add more sophisticated thermodynamics of Hellmer (1989), this is
774        now the default
775      - give a few constants more intuitive names
776    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
777      if bulk formulae are used in long integration (especially EmPmR). Turn
778      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
779      if balancePrintMean, the imbalance that is substracted is printed to
780      STDOUT.
781    o fix bug (typo) in obcs_apply_eta.F
782    o add a new package shelfice which enables us to model the circulation
783      underneath shelf-ice with draughts of hundreds of meters.
784     - works
785     - to do: + include improved thermodynamics
786              + check whether kSurfC (from model/inc/SURFACE.h) can be used
787                instead of new field kTopC
788              + can we use topoFile, Ro_surf and existing code in ini_depth.F
789                instead of new field R_shelfIce and new code in ini_depth.F
790                and ini_mask_etc.F?
791              + adjust vertical mixing schemes?
792    o seaice pkg:
793     - add a cpp-flag to include a simple formula for a salinity dependent
794       freezing point of sea water at the surface
795     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
796       meridional stresses are now different (and hopefully correct)
797    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
798       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
799       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
800    o pkg/diagnostics: add options and parameters for regional-statistics
801       diagnostics ; define regions by reading a region-mask from a file
802       (might add other options later)
803    o pkg/bulk_force:
804     - add option and parameters to use AIM surface-flux formulae.
805     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
806       others forcing fields (defined in PARM05, parameter file "data") are loaded
807       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
808     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
809     - use the right EXCH call for uwind,vwind (to work on CS-grid).
810     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
811       and parameters (note: calcWindStress replaces .NOT.readwindstress).
812     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
813    
814    checkpoint58
815    o add "--embed-source" option to genmake2 which, when the supporting
816      tools can be compiled (as determined by genmake2) will turn on the
817      embed_files package which then embeds the entire MITgcm source code
818      (*.[fFhc] + Makefile) used for the build within the executable
819      - requested by CNH but off by default
820      - adds a paltry <9MB to the mitgcmuv executable in most cases
821      - only writes the output when useEMBEDSRC in eedata is true
822    o clean up 3-dim. relaxation codes:
823      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
824      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
825      * Thanks to Tom Haine for testing!
826    
827    checkpoint57z_post
828    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
829      affects output (@ truncation level) of exp. plume_on_slope ; updated.
830    o fix the pickup behavior for obcs in combination with ptracers
831    o fix a bug in ptracers_external_fields_load
832    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
833      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
834    o transfered surface NH pressure to eta field (if exactConserv).
835    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
836         and update lab_sea output.txt file.
837    o completing 3-dim. relaxation code: additional term
838         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
839      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
840      * At compile time, in "EXF_OPTIONS.h" set
841          #define  ALLOW_CLIMTEMP_RELAXATION
842          #define  ALLOW_CLIMSALT_RELAXATION
843      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
844          tauThetaClimRelax3Dim = 15552000.0,
845          tauSaltClimRelax3Dim  = 15552000.0,
846      * 3 cases:
847          1) Use a constant-in-time 3-dim. field
848          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
849          3) Real-time relax. to time-evolving prescribed field
850    o Adding Laplacian-type smoothness constraint on
851      initial and boundary (forcing) controls (ic, bc)
852      * enable at compile-time via
853        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
854      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
855      * Absolute scale somewhat unclear so far
856      * no area weighting was included since no other cost term does so far
857    
858    checkpoint57y_post
859    First step for a NLFS adjoint
860    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
861    o new init. routines for calc_r_star, calc_surf_dr
862    o still need to deal with ini_masks_etc
863    o testreport seemed happy
864    checkpoint57y_pre
865    
866    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
867    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
868    o add new offset feature to offline pkg (plus minor cleanup)
869    o cfc fixes for final year of integration
870    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
871      be in GCHEM_OPTIONS).
872    
873    checkpoint57x_post
874    o fix testreport Pb in multiple test experiment.
875    o cleanup our namelist syntax in verification:
876      - make it more F95 standards compliant (some work still needed)
877      - allows the vast majority of our tests to work with gfortran
878    o Non-Hydrostatic:
879     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
880     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
881    o Allow to apply AB on T,S rather than on AB(gT,gS):
882     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
883     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
884       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
885     - need a "clever" read_pickup to restart from the other AB formulation
886    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
887    o remove some unused variables (reduces number of compiler warnings)
888    o adjoint
889      * Disable useVariableViscosity for adjoint for time being
890        (there are a number of extensive recomputations)
891      * Initialize certain variables needed for adjoint
892    
893    checkpoint57w_post
894    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
895                 fix the singleCpuIO RS version of MDSWRITEFIELD
896       and add a WARNING if using globalFiles=T with multi-processors.
897    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
898      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
899    o tracer advection scheme:
900      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
901       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
902       was not very convenient).
903      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
904       (further tests needed for the implicit DST & Flux-Limiter schemes).
905    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
906      and sRef for convenience, handy, when you want to initialize
907      ptracers in a large domain with a constant non-zero value. Also,
908      untangle ptracers_init.F a little.
909    
910    checkpoint57v_post
911    o change dome exp. to use variable viscosity in side-drag terms.
912    o remove all the files from the cfc_offline test since they are now
913      incorporated into tutorial_cfc_offline which has been producing
914      identical results for a few days of testing
915    o add new parameter: sideDragFactor to enable half-slip-side BC
916      and change side-drag S/R to use viscosity from mom_calc_visc
917      (can switch back by setting sideDragFactor=0.); affects results at
918      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
919       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
920    o vorticity & strain are now computed without masking, to account for
921      no-slip-side BC in variable viscosity calculation ; mask is applied
922      anyway later on, before computing advection/coriolis terms.
923    o modify exp4 to test new obcs support for reading from external files
924      and for passive tracers
925    o fix behavior of ptracers_monitor when monitor output is written to a
926      netcdf-file; still not independent of monitor.F (writes in the same
927      file).
928    o change default value of tRef (put a uniform, meaningful value for ocean
929      & atmos) and initialize sRef (was missing, as Martin mentioned).
930    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
931      to be proportional to enstrophy dissipation length.  Thus,
932       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
933      This is now consistent with Smagorinsky and with the manual.
934    
935    checkpoint57u_post
936    o OBCS and PTRACERS: add open boundary support for passive tracers
937      - either use homogenous (pseudo) v.Neumann conditions or prescribe
938        OB-values from file; this is not different from the way theta and salinity
939        are treated
940      - however, Orlanski-radiation conditions are not supported, and the model
941        will stop if you use pTracers and Orlanski at the same time.
942      - beefed up the rountine obcs_external_fields_load: now only those open
943        boundary values are overwritten with values from files for which there
944        are really files, otherwise the OB-fields remain untouched. This makes
945        it possible to use different OBs at different ends of the domain (as
946        with EXF)
947    o reduce number of exch calls in shap_filt (s2).
948    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
949      truncation level) 4/5 MLAdjust test results (11&12 digits match).
950    
951    checkpoint57t_post
952    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
953    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
954      same truncation, independent of the face number: affects affects several
955      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
956    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
957      note that biharmonic viscosity + no-slip was not tested in any experiment.
958    o fix bug in non-linear free-surf side-drag ; generate new output for
959      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
960    o make mnc honor the writeBinaryPrec flag for most kinds of output
961    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
962    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
963      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
964    o add brackets in multi-terms sum to get same truncation, independent of
965      the face number (manage to get exactly same value of gU,gV at the cs-edge)
966      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
967    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
968      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
969      a maximum grid-scale Reynolds number.  Also, changes all length calculations
970      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
971      Suggested values of viscosity parameters found in mom_calc_visc.
972      Many new viscosity diagnostics available.
973    
974    checkpoint57s_post
975    o Add clearing-house for viscosity calculations, mom_calc_visc and
976      correct numerous bugs in LeithD and Smagorinsky discretizations.  
977      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
978      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
979      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
980      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
981      The Strain-Tension form is now called with useStrainTensonVisc=.true.
982      ViscAhStrain and viscAhTension are now retired.
983    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
984    o In response to JMC's bug report, genmake2 now ignores any soft-links
985      that it finds in the *current* directory when searching for files.
986      Soft-links found in any other source directories will still work as
987      they did before.
988    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
989      a C routine to unlimit the stack size
990    o mnc-ify pkg/aim snapshot vars
991    o mnc-ify pkg/land as requested by Daniel
992    o various changes to mnc including:
993      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
994      - output can now be grouped so that all files within a group
995          change the ITER portion of their names in lock-step together
996      - can now read ("global") PER-FACE (in addition to PER-TILE) files
997          and works with both EXCH1 and EXCH2 (but needs more testing)
998      - writing works for all verification test cases w/ g77 on Linux
999    
1000    checkpoint57r_post
1001    o make MNC variable initialization happen earlier
1002    o add diagnostics for (almost) each term of the momentum Eq.
1003    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1004    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1005    o remove MINIMAL_TAVE_OUTPUT option ;
1006      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1007    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1008      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1009    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1010    o add time-dependent SST, SSS control
1011    o cost terms in ecco/ modularized (new cost_generic.F)
1012    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1013    o new infrastructure for seaice model vs. obs misfits in seaice/
1014      * driver from the_main_loop.F is seaice_cost_driver.F
1015      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1016      * gradient check in Exp. 6a of natl_box_adjoint/
1017    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1018      (see README file)
1019    
1020    checkpoint57q_post
1021    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1022    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1023      - bug was reported by Jean-Michel and Ian Fenty
1024    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1025      update exp. cpl_aim+ocn output.
1026    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1027      Needed for high-res. runs with large global files
1028      to be able to limit tapelev size
1029    o Changed some tests for adjoint:
1030      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1031      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1032      * global_ocean.90x40x15/ back to default 3-level checkpointing
1033    o Modifications to enable scripted COMMON to MODULE conversion
1034      * verification/OpenAD/code/ has necessary scripts and description;
1035      * converts, compiles and runs successfully;
1036    
1037    checkpoint57p_post
1038    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1039    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1040      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1041    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1042    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1043      (was already the case for dissipation with mom_vecinv,
1044       and also the case for grad.PhiHyd when staggered-timeStep)
1045      This will allow to put dissipation out-off the AB time-stepping.
1046     Unfortunately, affects truncation error. Update output of exp. that "fails"
1047      (cg2d matching number) and leave the others for later: front_relax(10),
1048      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1049      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1050    
1051    checkpoint57o_post
1052    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1053      (2) its ready to be documented during the 20050801 DocFest
1054    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1055      for ideal_2D_oce and lab_sea on linux_ia32_g77
1056    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1057      in global1x1_tot/code_seaice_adj to access indices 32, 33
1058      (worth another tag)
1059    
1060    checkpoint57n_post
1061    o adding precip control xx_precip 32
1062    o adding swflux control xx_swflux 33
1063    o Replacing 10 forcing penalty cost routines by 1 generic.
1064    o Implementing partitioning in time-mean and variable adjustment
1065      for atmos. state.
1066    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1067  o in natl_box_adjoint:  o in natl_box_adjoint:
1068    * updated: results_bulk/    * updated exp 1 to 10
1069    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1070    o updated global1x1/*_seaice_adj/
1071      to incorporate latest changes
1072    o enable useSingleCpuIO for mdsio vector routines
1073      (applies in particular to tapelev I/O)
1074    o removed inefficient K-loop in all active_file*control*.F
1075    
1076  checkpoint57m_post  checkpoint57m_post
1077  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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