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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.842 by jmc, Thu Jun 21 00:53:20 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 standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
8  o moved ptracer ctrl index 17 -> 32   for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
9     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
10    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
11     and change default value of parameter "GM_Small_Number";
12     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
13       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
14       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
15    o pkg/ecco: cost function when applying pkg/smooth to controls
16    o pkg/ctrl: add forcingPrecond run time parameter
17    o pkg/seaice:
18     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
19     - fix bug in metric terms of u-equation in LSR solver (implicit part),
20       changes verification/lab_sea
21     - rearrange implicit part of u-equation in LSR solver to make it easier to
22       read, understand, and debug. This causes changes at the truncation level.
23     - fix (serious) bug in the boundary conditions (sign error in the implicit
24       part) of the LSR solver. Changes all LSR results.
25     - fixed problem with HSNOW initialization to avoid thick snow when AREA
26       is initilized with small values - does not change lab_sea results.
27     - added HsnowFile initialization capability
28    o pkg/smooth: addition to model/src and pkg/ctrl so allow
29     initialization of pkg/smooth and application to control vector
30    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
31    o dependencies: pkg/profiles requires pkg/cal
32    o pkg/profiles:
33     - added option ALLOW_PROFILES_GENERICGRID
34         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
35         that interpolation information (grid points and coefficients) is provided
36         within the netcdf input files.
37         -> sample matlab scripts can be found in MITgcm_contrib/gael
38         that allow you to prepare netcdf input files.
39     - also modified: cleaner include statements, cleaner error print statements,
40       cleaner stops when error, and more tests of the netcdf input files consistency.
41    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
42    o pkg/seaice:
43     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
44       requires a new routine: seaice_diagnostics_fill.F
45     - make sure that seaice does not move if not forced (pressure replacement
46       method, Hibler and Ip, 1995), changes results
47     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
48     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
49       It is turned off by default (=-1.), because it changes the results.
50     - make it possible to read AREA from a file, too.
51    
52    checkpoint59c
53    o add S/R and diagnostics for oceanic mixed-layer depth
54    o move GMRedi call after all vertical mixing schemes (including KPP)
55    o pkg/thsice:
56     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
57      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
58    o pkg/obcs:
59     - bug fix for balance code
60    o pkg/seaice:
61      - allow values of SEAICE_elasticParm > 1
62      - add new parameter SEAICE_evpTauRelax as an alternative
63        to SEAICE_elasticParm
64      - make lsr boundary conditions free slip (by default), changes result
65      - add code for no slip boundary conditions for lsr
66      - set minimum of zeta to zero (and not 4e8) (changes results)
67      - add a cap on AREA after advecting AREA if seaice_growth is not called
68    o change calculation of Visbeck K:
69      - no longer depend on tapering scheme; instead, compute slope (limited
70        by GM_maxSlope). this is equivalent to what was comuted before with
71        clipping or linear tappering.
72      - fix vertical averaging (wrong by 1/2 level)
73      - leave the old version (but will not be maintained) within
74        #ifdef OLD_VISBECK_CALC / #endif
75      - update output of exp. ideal_2D_oce
76    o change error catch in calc_r_star to improve vectorization
77    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
78      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
79    o adjoint:
80      Re-organized adjoint checkpointing according to Matt Mazloff
81      (but with modifs/completions/cleanups)
82      Storing is now bundled into large arrays to optimized I/O
83      (and second step in cleanup of the_main_loop)
84    
85    checkpoint59b
86    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
87      - export/import (between ocean & coupler) fields needed for ocean DIC.
88    o pkg/seaice:
89      - get rid of three more exchanges seaice_calc_viscosities (required
90        different loop boundaries in seaice_lsr and seaice_ocean_stress)
91      - bug fix in seaice_ocean_stress (update of lab_sea required)
92      - reduce loop boundaries to necessary minimum also in seaice_evp
93      - go back to the old way of computing deltaC/Z as the adjoint likes that
94        better
95    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
96      passive tracer to an Age Tracer) + update output.txt
97    o pkg/exf:
98      - implement A-grid / C-grid selection for wind-stress input files.
99      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
100      for now, in exf_bulk_largeyeager04.F only :
101      - change implementation for case where windspeed + 2. components wind-stress
102        are read-in. AND use rhoConstFresh to convert evap.
103    o pkg/seaice:
104      - use correct EXCH_UV for wind-forcing (on A-grid).
105      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
106        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
107    o pkg/exf:
108      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
109      EXF_INTERPOLATION:
110      - merge global_with_exf/code version of exf_interp_read.F
111        to the main code ;
112      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
113        reading the file ; Important: This options needs to be defined to recover
114        previous code.
115        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
116      - no longer loose real*8 precision along the way when using exf_iprec=64.
117    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
118      - change discretisation of evp-solver in order to avoid another exchange
119        (changes lab_sea) and clean up a little
120      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
121        help the adjoint (this also changes the results slightly)
122      - add a few "_d 0" where they had been missing in seaice_evp.F
123      - cleaning up: remove unused seaice_calc_rhs.F
124    o pkg/exf: some cleaning-up:
125      - change various "constants" into runtime parameters
126      - cleaned-up Large&Yeager04 routine which should eventually
127        replace exf_bulkformulae.F (changed names of S/R and CPP)
128        and merged various ALLOW_ATM_WIND options
129     only used with thsice pkg (in thsice_get_exf.F):
130      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
131        which are used when useStabilityFct_overIce=TRUE (= the default)
132      - change default values of ice & snow emissivity and scale downward LW
133        by ice & snow emissivity.
134    o pkg/thsice:
135     fix few little problems, in thsice_calc_thickn.F:
136      - growth vertically (and not laterally) if iceFrac == iceMaskMax
137      - melt only laterally if hIce < hThinIce (as the comments say)
138      and in thsice_extend.F:
139      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
140      - start to form ice as soon as the minimum ice-volume is reachable.
141     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
142      and cpl_aim+ocn
143    o pkg/kpp
144     - move computation of surface related input fields to KPP into a new
145       subroutine kpp_forcing_surf.F
146     - remove wrong (within bi,bj loops) EXCH calls.
147     - little cleaning (add argument myThid in last position, cvs header ...)
148     - for now, fix conservation problem by exchanging KPPviscAz (may not
149       be the best fix)
150    o pkg/seaice
151     - check for inconsistent evp parameter/cpp-flag combination
152     - remove leftover errIO flat for obsolete name list error handling
153    o OpenAD
154     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
155    
156    checkpoint59a
157    o pkg/seaice: some parameter clarifications and a little bit of clean up
158    o pkg/thsice: rename run-time parameters:
159       himin       -> hIceMin
160       himin0      -> hThinIce
161       hihig       -> hThickIce
162       i0          -> i0swFrac
163       transCoef   -> bMeltCoef
164       frac_energy -> fracMelting
165      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
166       with default values (for now) that do not change the results.
167      remove old version of thsice vars advection in pkg/seaice.
168    o in FFIELDS.h:
169      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
170      - make pLoad & sIceLoad always available (but still only used if
171         ATMOSPHERIC_LOADING is #define).
172    o pkg/kpp: replaced _KPP_RL with _RL
173    o bug fixes for vertical diffusivity computations when both KPP and
174        3D diffusivity arrays are used.
175    o pkg/seaice: fix bug in evp solver, while doing that
176      - change (improve?) discretization of stress computations for both
177        cgrid-lsr and evp solver
178      - add a new routine to compute strain rates
179      - the above changes lab_sea results
180      - add no slip conditions for evp solver (off by default), lsr-version
181        may follow
182      - fix exchange for shear at Z-points (does not change lab_sea)
183      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
184        (to force the user to pick a time step since there is not "safe" way
185        of choosing it)
186      - add principal stress diagnostics
187      - rearrange fields for evp a little to avoid having to call a: too many
188        exchanges and b: exchanges for stress trensor components which we do
189        not have.
190      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
191        of evp, complete rewrite for lsr case (latter is does not yet work
192        in all cases)
193    o pkg/kpp: add code to have mixing in shelf ice caverns
194      - add myThid to all kpp routines (long overdue)
195    
196    checkpoint59
197    o pkg/exf:
198      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
199        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
200      - move exf header files from lower_case.h to UPPER_CASE.h ;
201        add missing cvs Header & Name
202      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
203      - add namelist param. selectStressGridPosition, exf_monFreq
204      - retire many _CLIM routines, and remove data.exf_clim
205        + params moved to data.exf
206        + climsst, climsss now handled by exf_set_gen, i.e.
207          climss?period=0 refers to constant field,
208          climss?period=-12 to monthly forcing
209      - split up namelists in data.exf
210    o pkg/seaice:
211      - remove seaice_exch and seaice_exch_uv
212      - remove superfluous exchange of theta
213      - add myThid to seaice_budget_ocean/ice
214      - add new interface for atmospheric wind forcing (C-grid only)
215        + new routine
216        + two new field (taux, tauy for stress over ice)
217        + removed one global field (DAIRN) for C-grid case only
218    o pkg/thsise
219      - 2nd set of modifs for thsice adjoint in conjunction with exf
220    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
221    
222    checkpoint58y_post
223    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
224      vertical diffusivity, similar to that in MOM4; turned on using
225      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
226      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
227    o Added capability for 3D specification of background vertical diffusion
228      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
229      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
230      "data" file that contains the 3D vertical diffusivity coefficients.
231    o ice dynamics (pkg/seaice) with thsice thermodynamics:
232      - add code within pkg thsice to advect & diffuse sea-ice fields
233      similar to (and will replace) what has been added in  seaice_advdiff.F,
234      but: - conserving Mass, Heat & Salt.
235           - better when using non-linear advection scheme (not yet fully tested)
236           - can also be used in atmospheric set-up (for now, only the diffusion).
237    
238    checkpoint58x_post
239    o IO option for global-file compact format:
240      - add options when generating topology (utils/exch2/matlab-topology-generator)
241      - add I/O capability (pkg/mdsio).
242      - adapt utils/matlab/rdmds.m to read this format.
243      for now long-line format not yet supported by pkg/mdsio (& exch2).
244    o shelfice: add a few diagnostics
245    
246    checkpoint58w_post
247    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
248      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
249      (and replace horiVertRatio in NH code).
250      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
251                         and tutorial_plume_on_slope (sensitive to truncation)
252    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
253      directly to drive seaice model (C-grid only)
254    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
255     - reintroduce computation of wind from stress,
256     - compute tau (in exf_bulkformulae.F) from windstress averaged to
257       mass points to avoid tau = 0
258     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
259    o rdmnc.m: make it work with "global" files created with gluemnc
260    o rdmnc.m : some improvements in dealing with singleton dimension
261      (tested on all testreport mnc output files).
262    o genmake2: disable pkg/profiles if netcdf test fails.
263    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
264    o move call to cal_readparms up to make calendar parameters/variable available
265      to all packages
266    
267    checkpoint58v_post
268    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
269      useDynP_inEos_Zc tested.
270    o pkg/exf: changes to properly interpolate/mask/scale initial fields
271    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
272      and portions thereof.  See read_cs.txt for description and examples.
273    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
274      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
275      following the great-circle arc between those 2 points.
276    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
277      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
278    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
279     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
280     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
281     - still needs work (not working with some options ; efficiency to improve)
282       and serious testing.
283     - use this scheme for temperature & salinity in 2 advection test exp.:
284       advect_xy & advect_xz, respectively.
285    
286    checkpoint58u_post
287    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
288    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
289    o testreport: add option "-skipdir" to skip some test.
290    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
291      momentum calculation.
292    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
293    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
294      remove checkpoint.F and the_correction_step.F (no longer used);
295      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
296    o add option (linFSConserveTr) to correct for tracer source/sink due to
297      Linear Free surface
298    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
299    o pkg/thsice: fix reading mnc-pickups
300    
301    checkpoint58t_post
302    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
303    o pkg/mdsio:
304     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
305       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
306       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
307     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
308     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
309       either MDS_READ_FIELD or MDS_WRITE_FIELD )
310     - new S/R (to replace MDSWRITEMETA), which allows to write more
311       informations (variable names, time ...) to meta files.
312     - modify rdmds.m to give back the meta file content.
313    o pkg/diagnostics: change vertical interpolation to be safer, and more
314       flexible (define p-levels to interpolate to in data.diagnostics);
315      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
316       diagnostic pointer.
317    o pkg/seaice: more cleaning up of seaice_growth, added many comments
318    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
319    o fix multi-category seaice:
320     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
321       SEAICE_MULTICATEGORY
322     - fix short wave heat flux
323    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
324       and allow to use EVP solver. Change forward lab_sea: test both EVP
325       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
326    o Initial check-in of lab_sea adjoint
327      (very similar to natl_box_adjoint/code_seaice)
328      * used C-grid and EVP solver
329      * used KPP, GM/Redi
330      * uses inAdExact=.TRUE.
331      * gradient checks fail for both ADM and TLM
332        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
333        f.d. gradients actually seem more problematic than ADM, TLM gradients;
334        issue is related to forward mismatch between g77 an ifort
335    o pkg/seaice: overhaul of thermodynamics
336     - growth.F and groatb.F are replaced by new routine seaice_growth.F
337     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
338     - move a few global fields out of SEAICE.h into seaice_growth.F and
339       make them 2D (FICE/QNETO/ ...)
340     - remove FO (it is the same as QNETO)
341     - introduce a few local fields to avoid modifying external fields such
342       as atemp, etc.
343    
344    checkpoint58s_post
345    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
346      changed exf_set_gen.F so that
347        genperiod=0 means input file is one time-constant field and
348        genperiod=-12 means input file contains 12 monthly means
349    o CG2D: use pre-computed solver main-diagonal (stored in common block);
350      this affects truncation error ; generate new output file for exp. which
351      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
352        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
353        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
354        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
355        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
356        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
357    o start implementation of deep-atmosphere and anelastic formulation
358    o verification: remove 2nd copy of input files and use script "prepare_run"
359      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
360    o mom_common/vecinv/fluxform: fix a few initialisation isssues
361    o profiles: fix for multithreaded case
362    
363    o diagnostics: rename few diags:
364      s/'PRESSURE'/'RCENTER '/g
365      s/'TICE    '/'oceFreez'/g
366      s/'TAUX    '/'oceTAUX '/g
367      s/'TAUY    '/'oceTAUY '/g
368      s/'SWFLUX  '/'oceQsw  '/g
369      s/DIFx/DFxE/g
370      s/DIFy/DFyE/g
371      and add few ocean-forcing diagnostics:
372      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
373    o modifications to pkg/seaice/growth.F and budget.F, which change results of
374      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
375      as actual snow thickness.  It now refers everywhere to effective snow
376      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
377    
378    checkpoint58r_post
379    o modifications to pkg/seaice/growth.F, which change results of
380      lab_sea experiment: fixes pertain to melting snow over open water, to
381      masking EVAP under sea ice, and to using the correct AREA variable for
382      computations of EVAP, PRECIP, HSNOW, and GHEFF
383    o add ability to read bathy, salt, and theta using MNC (off by def)
384    o add flooding algorithm and advection of HSNOW for pkg/seaice;
385      both are turned off by default and do no change any results
386    o seaice advection with pkg/thsice: a step toward the use of non-linear
387      advection scheme, but #ifdef or commented out for now (requires more EXCH).
388    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
389      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
390      in natl_box (affects results @ truncation level: update output.txt)
391    o multi-threading and IO:
392      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
393      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
394        (needed to work with SingleCpuIO): tested in all verif. exp.
395    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
396      affects the results (but none of the verification test uses this scheme).
397    o Adding some pkg/diagnostics capability to pkg/seaice
398      (will certainly be subject to changes)
399    o ctrl: adding new control variables:
400      lwflux, lwdown, evap, snowprecip, apressure, runoff
401    
402    checkpoint58q_post
403    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
404      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
405      high_res_cube configuration by 4% on Columbia.
406    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
407      add (in global_with_exf/code) a version of EXF_INTERP_READ without
408      dynamical allocation (seems to work in multi-threaded).
409    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
410      single CPU io) so that TAF does not have to see EESUPPORT.h
411    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
412    
413    checkpoint58p_post
414    o obcs: stop if obcs is used with useCDscheme = .true.
415    o shelfice:
416     - fix a sign error so that no slip at shelfice interface works
417     - remove stop for combination non-hydrostatic code and shelfice. That does
418       not mean, that the results are correct, but at least they are numerically
419       stable
420    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
421    o added adjoint exch routined for all exch*3d* routines
422      and updated flow directives
423    
424    checkpoint58o_post
425    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
426      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
427    o change controling S/R for writing pickup file (new S/R do_write_pickup)
428      and clean-up reading/writing of pickup files.
429    o fix local version of read/write pickup (NH part) in rotating_tank/code
430    o simplify EXCH interface:
431     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
432     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
433    o added the regrid package
434    o shelfice:
435     - add a simple boundary layer scheme to reduce noise
436     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
437    
438    checkpoint58n_post
439    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
440       local variable (not in common block).
441    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
442      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
443      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
444        to work with SingleCpuIO.
445    o add "_d 0" to real constant of pkg/cfc subroutines ;
446       update exp. cfc_exemple & tutorial_cfc_offline output files.
447    o multi-threading and IO:
448      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
449        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
450      - barrier before and after reading.
451      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
452      - avoid using MDS_WRITELOCAL for LAND pkg output.
453      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
454        common-block variables ; Allows multi-threading with master-thread IO.
455    o change default MAX_NO_THREADS from 32 to 4 ;
456      and stop cleanly when MAX_NO_THREADS is too small.
457    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
458    
459    checkpoint58m_post
460    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
461       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
462    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
463       keep global_ocean.90x40x15 (for AD testing) with former secondary test
464       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
465    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
466        add MITgcm_tutorials (= code + all the tutorials)
467    o ecco, option to compute cost for total ssh (mean+anom)
468    o consistent with addition of ptracer and ssh in pkg/profiles
469    o profiles: adding ptracer and ssh
470    o testreport: change multi-test output-file name
471      (from output.txt.{name} to output.{name}.txt)
472    o profiles: now ok for mutli-tiles case
473    o seaice: add 4 parameters for different advection schemes for area,
474      (effective) seaice thickness, enthalphy, and snow height. Their default
475      is the standard parameter SEAICEadvScheme
476    o calc_gw:
477     - add cosFacU in zonal viscous flux (harmonic.visc.).
478     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
479       of tutorial_plume_on_slope.
480    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
481    o calc_gw: true flux-form, account for horizontal grid spacing.
482      update rotating_tank results, but not plume_on_slope (affected at
483      truncation level, 11 digits).
484    
485    checkpoint58l_post
486    o calc_gw:
487     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
488     - remove side-drag for now (need to fix it); update plume_on_slope results.
489     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
490    o commit code to make SST/SSS weights spatially variable
491      (based on either variable in-situ or variable initial T/S weights)
492    o pkg/ecco:
493      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
494        now based on horizontally varying weights wthetaLev, wsaltLev
495      * cost_averagesflags now returns year indices in addition to day, month
496      * sflux balance is performed on annual basis
497        (sflxumm, sfluxmm2, bal_sfluxmm)
498      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
499        including separate counting and multipliers
500    o pkg/rbcs
501      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
502    
503    checkpoint58k_post
504    o testreport:
505     - always build in dir. "build" (if not there, mkdir build instead of building
506       & running in input)
507     - run in dir run (if it exists), in build otherwise.
508     - call prepare_run (if input/prepare_run exists)
509     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
510    o pkg/exf modifications to interpolation and rotation routines for more
511       reasonable treatment of North Pole singularity: for tracers North Pole
512       value is set to northernmost zonal-mean value, for zonal velocity it is
513       set to zero, and for meridional velocity it is set to northernmost value.
514    o pkg/exf/exf_check_range.F
515     - add tile index to diagnostics and move stop statement to the very
516       end of the routine.
517    o pkg/diagnostics: (diagnostics_main_init.F)
518      define title of isomorphic variables according to the current config.
519    o pkg/thsice with pkg/seaice dynamics:
520    - fix domain of computation (interior only, required for exf) and do exchanges
521    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
522    o towards a standard way of dealing with multi-threading in MONITOR
523      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
524    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
525       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
526    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
527    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
528    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
529       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
530    o tracer advection:
531     - clean-up and simplify calc_common_factors.F
532     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
533       advection subroutine (but still not used within DST advection S/R)
534    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
535    
536    checkpoint58j_post
537    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
538      from file (collects calls previously in FORWARD_STEP)
539    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
540    o adjoint store dir. adjusted accordingly
541    o genmake2
542      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
543    
544    checkpoint58i_post
545    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
546      on wind stress (SEAICEstressFactor defaults to 1.)
547    o Total number of Timers is finite (<=40): comment out 2 non-essential one
548      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
549    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
550      on CS-grid: no longer loosing mass.
551    o exf & curvilinear-grid: no longer modify longitude xC & xG.
552    o pkg/ggl90: fix sloppy output and fix a bug
553    o pkg/seaice: added SEAICEuseEVPpickup parameter
554      - Set to false in order to start EVP solver with
555        non-EVP pickup files when using SEAICEuseEVP
556      - fix sign error in diffusion in seaice_calc_rhs
557    
558    checkpoint58h_post
559    * Modifications for bottom topography control
560      o replace hFacC by _hFacC at various places
561      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
562      o add non-self-adjoint cg2d_nsa
563      o update autodiff support routines
564      o re-initialise hfac after ctrl_depth_ini
565      o works for 5x5 box, doesnt work for global_ocean.90x40x15
566    * Adding verification for 5x5 box (4-layer) bottom topography control
567    
568    checkpoint58g_post
569    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
570       used for mean seasonal cycle, mean diurnal cycle); add an example
571       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
572    o pkg/ggl90:
573      - add parameter (minimum surface kinetic energy)
574      - fix bug (avoiding division by zero)
575    o couple pkg/thsice to pkg/seaice:
576      - modify advection in seaice to accomodate new scalar fields to be advected
577      - only muliDimAdection scheme work with seaice/thsice
578      - mapping of thsice-variables to seaice-variables, back and forth
579      - does not break the verification experiments, but does not give the
580        desired results either
581    o pkg/seaice
582      - make (default) second order advection a bit less confusing?
583    
584    checkpoint58f_post
585    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
586      to pkg/seaice):
587      - new routines thsice_map_exf and thsice_get_exf provide the interface
588      - add an additional formal parameter to thsice_solve4temp
589    o pkg/exf:
590      - add new fields wspeed, snowprecip (to be able to couple to thsice)
591      - correct Stefan-Boltzmann constant
592      - new parameter for longwave surface emittance
593      - separate some stuff from exf_bulkformulae into new routines  
594        exf_radiation, exf_wind
595      - add new parameters and constants: longwave emissivity for ocean, ice
596        and snow, evaporation parameters over ice
597      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
598        either wind from stress or stress from wind
599    o pkg/thSIce:
600    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
601    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
602       and THSICE_CALC_THICKN
603    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
604    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
605      to make debugging easier.
606    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
607    o pkg/bulk_force:
608      - clean-up comments and parameters ;
609      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
610    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
611      generate new output for test-experiment: aim.5l_cs.thSI
612    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
613      testreport accordingly
614    
615    checkpoint58e_post
616    o SEAICE_CGRID adjoint done
617    o R_STAR adjoint implemented.
618      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
619      * need to sort out init. of h0facc, etc.
620    o Make pkg/profile fully independent of ecco,cost, etc. stuff
621      to be able to use it in pure forward.
622    
623    checkpoint58d_post
624    o upgrade simple test-experiment to tutorial example:
625     step.1: duplicate the experiment and (step.2) will remove the old copy.
626      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
627      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
628      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
629      tutorial_global_oce_biogeo    <- copy of dic_example
630      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
631      tutorial_plume_on_slope       <- copy of plume_on_slope
632      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
633      tutorial_global_oce_optim     <- empty for now (David ?)
634      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
635     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
636    o correct a sign problem in cost_scat.F
637    o obcs and ptracers: fix boundary conditions for advections schemes
638      with larger stencil
639    o thsice adjoint: start
640    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
641      completeness
642    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
643      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
644    o ptracers adjoint:
645      * avoid extensive recomputatations
646      * fix missing re-init. of gptr (missed by TAF)
647    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
648      me to turn off the excessive output to STDOUT that this package produces
649    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
650      and add those terms in Vector-Invariant formulation.
651    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
652      if the control period (xx_hfluxperiod etc) is 0
653    o in profiles pkg, clean routines and fix details
654    o in ecco pkg, reading ssh data:
655      fix problem in case the model does not start at iter0=0
656    o fix mnc-pickup/restart for ptracers
657    o new package prifiles:
658      code to compute profile-based cost by Gael Forget
659      (modifs in ecco, ctrl, autodiff)
660    o Benign bug fix in initialization (spotted by M. Mazloff) of
661      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
662    
663    checkpoint58c_post
664    o adjoint: finish NLFS adjoint and provide reference output in
665      verification/global_ocean.90x40x15/results_ad_nlfs
666    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
667      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
668      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
669      with SEAICE_CGRID defined.
670    o move calendarDumps from "data" to "data.cal" and clean-up the code
671      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
672    o add useEXF & useCAL flags (for now, set in hard-coded way)
673    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
674      (were missing in NH mode, and wrong in quasihydrostatic mode).
675      waiting for Chris updated version of calc_gw to add those CALLs.
676    o fix bug in quasihydrostatic S/R ;
677      add a test for this option: global_ocean.90x40x15.qshyd
678    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
679      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
680    o add on/off flag useOffLine for package OFFLINE
681    o seaice:
682      - modify advection so that it works also on the C-grid
683      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
684        problem in multi-tile runs with C-grid
685      - add flags for clipping ice velocities and/or masking solver forcing
686      - fix drag (ocean on ice) formulation and a bug that caused noise in the
687        C-grid solver
688      - added a few comments to seaice_diffusion.F
689      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
690        are now exclusive)
691      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
692        required re-ordering the code a little:
693       + make DAIRN global variable (defined in SEAICE)
694       + move computation of the viscosities eta and zeta into a new separate
695         routine (because I need to recompute them in seaice_ocean_stress.F)
696    
697    checkpoint58b_post
698    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
699      update output.txt of exp. aim.5l_cs.thSI
700    o various mnc cleanups and improvements:
701      + shrink lookup tables by factor of ~4
702      + better error reporting when running out of lookup space
703      + able to handle longer path/file names (up to 500 chars)
704    o adjoint:
705      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
706      - TBD: "hidden" mom_vecinv recomp. in dynamics
707    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
708     (allow to differentiate between forcing components using new integer flags:
709      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
710     and add new flag to put Dissipation tendency out of Adams-Bashforth.
711    o ecco
712      - enable trend removal from SSH anomaly obs.
713    o adjoint
714      - a fix for PmEpR when #undef EXACT_CONSERV
715      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
716      - try to fix "hidden" recomp. in forward_step for NLFS
717        (NLFS seems broken sometimes after I checked it in)
718    o seaice:
719     - add c-grid version of the dynamic solver:
720       + three new routines that are the c-grid substitute lsr, dynsolver
721         and ostres
722       + put a few fields that were local to dynsolver into global common
723         blocks, so that I can move the computation of stresses etc into
724         seaice_lsr (saves coding but may break the adjoint).
725     - replace more hardwired parameters by runtime parameters
726     - add ice masks that mask the rhs of the implicit solvers where there
727       is no ice (commented out in seaice_dynsolver, because i am not sure
728       if this works properly), eventually this should replace the clipping
729       of ice velocities in seaice_dynsolver to +/-40cm/s.
730    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
731      include it only where its needed
732    o move balancing of fluxes before the call of external_forcing_surf
733    o seaice:
734      - correct units of turning angles (now they are really in degrees)
735      - move computation of GWATX/Y out of main routine into dynsolver
736      - initialize GWATX/Y in seaice_init
737    o Apply mask on Fresh-Water flux (needed for SSH forcing).
738      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
739    o seaice: add runtime flags for turning angles (default to zero)
740    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
741      and trend from exf forcing and ctrl control adjustments
742    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
743      (since checkpoint57x_post)
744    o change the default rotation period to 86164.s = the Earth rotation
745    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
746      and based on a reference stratification. Tested within hs94.cs-32x32x5.
747    o seaice advection: add code for choosing between the default (2nd order
748      central differences) and multiDim advection schemes provided by
749      pkg/generic_advdiff
750    o seaice:
751      - removed all references to SEAICE_GRID.h fields from
752        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
753        (cubed-sphere configuration will change a little)
754      - grid computations in seaice_init are obsolete now.
755      - cleaned up code a little so that is easier to read (hopefully).
756      - added new (better?) discretizations of default advection and diffusion
757        (turn on with SEAICEuseFluxForm)
758      - replace 1 in 3d global fields by kSurface in growth.F
759      
760    checkpoint58a_post
761    o seaice:
762      - bug fix in advect.F
763    o shelfice:
764      - separate shelfice load anomaly from pload (breaks with time
765        dependent forcing), => introduce constant field shelficeLoadAnomaly.
766        Its default is 0., but it may be computed more cleverly from (unknown)
767        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
768        done offline. A good approximation of the pressure load anomaly is
769        necessary to avoid large initial adjustment processes underneath
770        deep-reaching shelfice.
771      - small fix in ISOMIP shelfice_thermodynamics
772      - add more sophisticated thermodynamics of Hellmer (1989), this is
773        now the default
774      - give a few constants more intuitive names
775    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
776      if bulk formulae are used in long integration (especially EmPmR). Turn
777      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
778      if balancePrintMean, the imbalance that is substracted is printed to
779      STDOUT.
780    o fix bug (typo) in obcs_apply_eta.F
781    o add a new package shelfice which enables us to model the circulation
782      underneath shelf-ice with draughts of hundreds of meters.
783     - works
784     - to do: + include improved thermodynamics
785              + check whether kSurfC (from model/inc/SURFACE.h) can be used
786                instead of new field kTopC
787              + can we use topoFile, Ro_surf and existing code in ini_depth.F
788                instead of new field R_shelfIce and new code in ini_depth.F
789                and ini_mask_etc.F?
790              + adjust vertical mixing schemes?
791    o seaice pkg:
792     - add a cpp-flag to include a simple formula for a salinity dependent
793       freezing point of sea water at the surface
794     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
795       meridional stresses are now different (and hopefully correct)
796    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
797       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
798       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
799    o pkg/diagnostics: add options and parameters for regional-statistics
800       diagnostics ; define regions by reading a region-mask from a file
801       (might add other options later)
802    o pkg/bulk_force:
803     - add option and parameters to use AIM surface-flux formulae.
804     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
805       others forcing fields (defined in PARM05, parameter file "data") are loaded
806       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
807     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
808     - use the right EXCH call for uwind,vwind (to work on CS-grid).
809     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
810       and parameters (note: calcWindStress replaces .NOT.readwindstress).
811     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
812    
813    checkpoint58
814    o add "--embed-source" option to genmake2 which, when the supporting
815      tools can be compiled (as determined by genmake2) will turn on the
816      embed_files package which then embeds the entire MITgcm source code
817      (*.[fFhc] + Makefile) used for the build within the executable
818      - requested by CNH but off by default
819      - adds a paltry <9MB to the mitgcmuv executable in most cases
820      - only writes the output when useEMBEDSRC in eedata is true
821    o clean up 3-dim. relaxation codes:
822      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
823      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
824      * Thanks to Tom Haine for testing!
825    
826    checkpoint57z_post
827    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
828      affects output (@ truncation level) of exp. plume_on_slope ; updated.
829    o fix the pickup behavior for obcs in combination with ptracers
830    o fix a bug in ptracers_external_fields_load
831    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
832      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
833    o transfered surface NH pressure to eta field (if exactConserv).
834    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
835         and update lab_sea output.txt file.
836    o completing 3-dim. relaxation code: additional term
837         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
838      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
839      * At compile time, in "EXF_OPTIONS.h" set
840          #define  ALLOW_CLIMTEMP_RELAXATION
841          #define  ALLOW_CLIMSALT_RELAXATION
842      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
843          tauThetaClimRelax3Dim = 15552000.0,
844          tauSaltClimRelax3Dim  = 15552000.0,
845      * 3 cases:
846          1) Use a constant-in-time 3-dim. field
847          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
848          3) Real-time relax. to time-evolving prescribed field
849    o Adding Laplacian-type smoothness constraint on
850      initial and boundary (forcing) controls (ic, bc)
851      * enable at compile-time via
852        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
853      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
854      * Absolute scale somewhat unclear so far
855      * no area weighting was included since no other cost term does so far
856    
857    checkpoint57y_post
858    First step for a NLFS adjoint
859    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
860    o new init. routines for calc_r_star, calc_surf_dr
861    o still need to deal with ini_masks_etc
862    o testreport seemed happy
863    checkpoint57y_pre
864    
865    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
866    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
867    o add new offset feature to offline pkg (plus minor cleanup)
868    o cfc fixes for final year of integration
869    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
870      be in GCHEM_OPTIONS).
871    
872    checkpoint57x_post
873    o fix testreport Pb in multiple test experiment.
874    o cleanup our namelist syntax in verification:
875      - make it more F95 standards compliant (some work still needed)
876      - allows the vast majority of our tests to work with gfortran
877    o Non-Hydrostatic:
878     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
879     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
880    o Allow to apply AB on T,S rather than on AB(gT,gS):
881     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
882     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
883       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
884     - need a "clever" read_pickup to restart from the other AB formulation
885    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
886    o remove some unused variables (reduces number of compiler warnings)
887    o adjoint
888      * Disable useVariableViscosity for adjoint for time being
889        (there are a number of extensive recomputations)
890      * Initialize certain variables needed for adjoint
891    
892    checkpoint57w_post
893    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
894                 fix the singleCpuIO RS version of MDSWRITEFIELD
895       and add a WARNING if using globalFiles=T with multi-processors.
896    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
897      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
898    o tracer advection scheme:
899      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
900       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
901       was not very convenient).
902      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
903       (further tests needed for the implicit DST & Flux-Limiter schemes).
904    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
905      and sRef for convenience, handy, when you want to initialize
906      ptracers in a large domain with a constant non-zero value. Also,
907      untangle ptracers_init.F a little.
908    
909    checkpoint57v_post
910    o change dome exp. to use variable viscosity in side-drag terms.
911    o remove all the files from the cfc_offline test since they are now
912      incorporated into tutorial_cfc_offline which has been producing
913      identical results for a few days of testing
914    o add new parameter: sideDragFactor to enable half-slip-side BC
915      and change side-drag S/R to use viscosity from mom_calc_visc
916      (can switch back by setting sideDragFactor=0.); affects results at
917      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
918       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
919    o vorticity & strain are now computed without masking, to account for
920      no-slip-side BC in variable viscosity calculation ; mask is applied
921      anyway later on, before computing advection/coriolis terms.
922    o modify exp4 to test new obcs support for reading from external files
923      and for passive tracers
924    o fix behavior of ptracers_monitor when monitor output is written to a
925      netcdf-file; still not independent of monitor.F (writes in the same
926      file).
927    o change default value of tRef (put a uniform, meaningful value for ocean
928      & atmos) and initialize sRef (was missing, as Martin mentioned).
929    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
930      to be proportional to enstrophy dissipation length.  Thus,
931       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
932      This is now consistent with Smagorinsky and with the manual.
933    
934    checkpoint57u_post
935    o OBCS and PTRACERS: add open boundary support for passive tracers
936      - either use homogenous (pseudo) v.Neumann conditions or prescribe
937        OB-values from file; this is not different from the way theta and salinity
938        are treated
939      - however, Orlanski-radiation conditions are not supported, and the model
940        will stop if you use pTracers and Orlanski at the same time.
941      - beefed up the rountine obcs_external_fields_load: now only those open
942        boundary values are overwritten with values from files for which there
943        are really files, otherwise the OB-fields remain untouched. This makes
944        it possible to use different OBs at different ends of the domain (as
945        with EXF)
946    o reduce number of exch calls in shap_filt (s2).
947    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
948      truncation level) 4/5 MLAdjust test results (11&12 digits match).
949    
950    checkpoint57t_post
951    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
952    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
953      same truncation, independent of the face number: affects affects several
954      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
955    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
956      note that biharmonic viscosity + no-slip was not tested in any experiment.
957    o fix bug in non-linear free-surf side-drag ; generate new output for
958      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
959    o make mnc honor the writeBinaryPrec flag for most kinds of output
960    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
961    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
962      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
963    o add brackets in multi-terms sum to get same truncation, independent of
964      the face number (manage to get exactly same value of gU,gV at the cs-edge)
965      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
966    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
967      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
968      a maximum grid-scale Reynolds number.  Also, changes all length calculations
969      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
970      Suggested values of viscosity parameters found in mom_calc_visc.
971      Many new viscosity diagnostics available.
972    
973    checkpoint57s_post
974    o Add clearing-house for viscosity calculations, mom_calc_visc and
975      correct numerous bugs in LeithD and Smagorinsky discretizations.  
976      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
977      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
978      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
979      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
980      The Strain-Tension form is now called with useStrainTensonVisc=.true.
981      ViscAhStrain and viscAhTension are now retired.
982    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
983    o In response to JMC's bug report, genmake2 now ignores any soft-links
984      that it finds in the *current* directory when searching for files.
985      Soft-links found in any other source directories will still work as
986      they did before.
987    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
988      a C routine to unlimit the stack size
989    o mnc-ify pkg/aim snapshot vars
990    o mnc-ify pkg/land as requested by Daniel
991    o various changes to mnc including:
992      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
993      - output can now be grouped so that all files within a group
994          change the ITER portion of their names in lock-step together
995      - can now read ("global") PER-FACE (in addition to PER-TILE) files
996          and works with both EXCH1 and EXCH2 (but needs more testing)
997      - writing works for all verification test cases w/ g77 on Linux
998    
999    checkpoint57r_post
1000    o make MNC variable initialization happen earlier
1001    o add diagnostics for (almost) each term of the momentum Eq.
1002    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1003    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1004    o remove MINIMAL_TAVE_OUTPUT option ;
1005      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1006    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1007      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1008    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1009    o add time-dependent SST, SSS control
1010    o cost terms in ecco/ modularized (new cost_generic.F)
1011    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1012    o new infrastructure for seaice model vs. obs misfits in seaice/
1013      * driver from the_main_loop.F is seaice_cost_driver.F
1014      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1015      * gradient check in Exp. 6a of natl_box_adjoint/
1016    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1017      (see README file)
1018    
1019    checkpoint57q_post
1020    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1021    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1022      - bug was reported by Jean-Michel and Ian Fenty
1023    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1024      update exp. cpl_aim+ocn output.
1025    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1026      Needed for high-res. runs with large global files
1027      to be able to limit tapelev size
1028    o Changed some tests for adjoint:
1029      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1030      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1031      * global_ocean.90x40x15/ back to default 3-level checkpointing
1032    o Modifications to enable scripted COMMON to MODULE conversion
1033      * verification/OpenAD/code/ has necessary scripts and description;
1034      * converts, compiles and runs successfully;
1035    
1036    checkpoint57p_post
1037    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1038    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1039      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1040    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1041    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1042      (was already the case for dissipation with mom_vecinv,
1043       and also the case for grad.PhiHyd when staggered-timeStep)
1044      This will allow to put dissipation out-off the AB time-stepping.
1045     Unfortunately, affects truncation error. Update output of exp. that "fails"
1046      (cg2d matching number) and leave the others for later: front_relax(10),
1047      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1048      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1049    
1050    checkpoint57o_post
1051    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1052      (2) its ready to be documented during the 20050801 DocFest
1053    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1054      for ideal_2D_oce and lab_sea on linux_ia32_g77
1055    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1056      in global1x1_tot/code_seaice_adj to access indices 32, 33
1057      (worth another tag)
1058    
1059    checkpoint57n_post
1060    o adding precip control xx_precip 32
1061    o adding swflux control xx_swflux 33
1062    o Replacing 10 forcing penalty cost routines by 1 generic.
1063    o Implementing partitioning in time-mean and variable adjustment
1064      for atmos. state.
1065    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1066  o in natl_box_adjoint:  o in natl_box_adjoint:
1067    * updated: results_bulk/    * updated exp 1 to 10
1068    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1069    o updated global1x1/*_seaice_adj/
1070      to incorporate latest changes
1071    o enable useSingleCpuIO for mdsio vector routines
1072      (applies in particular to tapelev I/O)
1073    o removed inefficient K-loop in all active_file*control*.F
1074    
1075  checkpoint57m_post  checkpoint57m_post
1076  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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