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revision 1.390 by jmc, Sun Nov 21 22:22:31 2004 UTC revision 1.837 by mlosch, Sun Jun 17 09:22:06 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
8    o dependencies: pkg/profiles requires pkg/cal
9    o pkg/profiles:
10     - added option ALLOW_PROFILES_GENERICGRID
11         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
12         that interpolation information (grid points and coefficients) is provided
13         within the netcdf input files.
14         -> sample matlab scripts can be found in MITgcm_contrib/gael
15         that allow you to prepare netcdf input files.
16     - also modified: cleaner include statements, cleaner error print statements,
17       cleaner stops when error, and more tests of the netcdf input files consistency.
18    
19    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
20    o pkg/seaice:
21     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
22       requires a new routine: seaice_diagnostics_fill.F
23     - make sure that seaice does not move if not forced (pressure replacement
24       method, Hibler and Ip, 1995), changes results
25     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
26     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
27       It is turned off by default (=-1.), because it changes the results.
28     - make it possible to read AREA from a file, too.
29    
30    checkpoint59c
31    o add S/R and diagnostics for oceanic mixed-layer depth
32    o move GMRedi call after all vertical mixing schemes (including KPP)
33    o pkg/thsice:
34     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
35      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
36    o pkg/obcs:
37     - bug fix for balance code
38    o pkg/seaice:
39      - allow values of SEAICE_elasticParm > 1
40      - add new parameter SEAICE_evpTauRelax as an alternative
41        to SEAICE_elasticParm
42      - make lsr boundary conditions free slip (by default), changes result
43      - add code for no slip boundary conditions for lsr
44      - set minimum of zeta to zero (and not 4e8) (changes results)
45      - add a cap on AREA after advecting AREA if seaice_growth is not called
46    o change calculation of Visbeck K:
47      - no longer depend on tapering scheme; instead, compute slope (limited
48        by GM_maxSlope). this is equivalent to what was comuted before with
49        clipping or linear tappering.
50      - fix vertical averaging (wrong by 1/2 level)
51      - leave the old version (but will not be maintained) within
52        #ifdef OLD_VISBECK_CALC / #endif
53      - update output of exp. ideal_2D_oce
54    o change error catch in calc_r_star to improve vectorization
55    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
56      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
57    o adjoint:
58      Re-organized adjoint checkpointing according to Matt Mazloff
59      (but with modifs/completions/cleanups)
60      Storing is now bundled into large arrays to optimized I/O
61      (and second step in cleanup of the_main_loop)
62    
63    checkpoint59b
64    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
65      - export/import (between ocean & coupler) fields needed for ocean DIC.
66    o pkg/seaice:
67      - get rid of three more exchanges seaice_calc_viscosities (required
68        different loop boundaries in seaice_lsr and seaice_ocean_stress)
69      - bug fix in seaice_ocean_stress (update of lab_sea required)
70      - reduce loop boundaries to necessary minimum also in seaice_evp
71      - go back to the old way of computing deltaC/Z as the adjoint likes that
72        better
73    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
74      passive tracer to an Age Tracer) + update output.txt
75    o pkg/exf:
76      - implement A-grid / C-grid selection for wind-stress input files.
77      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
78      for now, in exf_bulk_largeyeager04.F only :
79      - change implementation for case where windspeed + 2. components wind-stress
80        are read-in. AND use rhoConstFresh to convert evap.
81    o pkg/seaice:
82      - use correct EXCH_UV for wind-forcing (on A-grid).
83      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
84        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
85    o pkg/exf:
86      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
87      EXF_INTERPOLATION:
88      - merge global_with_exf/code version of exf_interp_read.F
89        to the main code ;
90      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
91        reading the file ; Important: This options needs to be defined to recover
92        previous code.
93        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
94      - no longer loose real*8 precision along the way when using exf_iprec=64.
95    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
96      - change discretisation of evp-solver in order to avoid another exchange
97        (changes lab_sea) and clean up a little
98      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
99        help the adjoint (this also changes the results slightly)
100      - add a few "_d 0" where they had been missing in seaice_evp.F
101      - cleaning up: remove unused seaice_calc_rhs.F
102    o pkg/exf: some cleaning-up:
103      - change various "constants" into runtime parameters
104      - cleaned-up Large&Yeager04 routine which should eventually
105        replace exf_bulkformulae.F (changed names of S/R and CPP)
106        and merged various ALLOW_ATM_WIND options
107     only used with thsice pkg (in thsice_get_exf.F):
108      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
109        which are used when useStabilityFct_overIce=TRUE (= the default)
110      - change default values of ice & snow emissivity and scale downward LW
111        by ice & snow emissivity.
112    o pkg/thsice:
113     fix few little problems, in thsice_calc_thickn.F:
114      - growth vertically (and not laterally) if iceFrac == iceMaskMax
115      - melt only laterally if hIce < hThinIce (as the comments say)
116      and in thsice_extend.F:
117      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
118      - start to form ice as soon as the minimum ice-volume is reachable.
119     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
120      and cpl_aim+ocn
121    o pkg/kpp
122     - move computation of surface related input fields to KPP into a new
123       subroutine kpp_forcing_surf.F
124     - remove wrong (within bi,bj loops) EXCH calls.
125     - little cleaning (add argument myThid in last position, cvs header ...)
126     - for now, fix conservation problem by exchanging KPPviscAz (may not
127       be the best fix)
128    o pkg/seaice
129     - check for inconsistent evp parameter/cpp-flag combination
130     - remove leftover errIO flat for obsolete name list error handling
131    o OpenAD
132     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
133    
134    checkpoint59a
135    o pkg/seaice: some parameter clarifications and a little bit of clean up
136    o pkg/thsice: rename run-time parameters:
137       himin       -> hIceMin
138       himin0      -> hThinIce
139       hihig       -> hThickIce
140       i0          -> i0swFrac
141       transCoef   -> bMeltCoef
142       frac_energy -> fracMelting
143      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
144       with default values (for now) that do not change the results.
145      remove old version of thsice vars advection in pkg/seaice.
146    o in FFIELDS.h:
147      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
148      - make pLoad & sIceLoad always available (but still only used if
149         ATMOSPHERIC_LOADING is #define).
150    o pkg/kpp: replaced _KPP_RL with _RL
151    o bug fixes for vertical diffusivity computations when both KPP and
152        3D diffusivity arrays are used.
153    o pkg/seaice: fix bug in evp solver, while doing that
154      - change (improve?) discretization of stress computations for both
155        cgrid-lsr and evp solver
156      - add a new routine to compute strain rates
157      - the above changes lab_sea results
158      - add no slip conditions for evp solver (off by default), lsr-version
159        may follow
160      - fix exchange for shear at Z-points (does not change lab_sea)
161      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
162        (to force the user to pick a time step since there is not "safe" way
163        of choosing it)
164      - add principal stress diagnostics
165      - rearrange fields for evp a little to avoid having to call a: too many
166        exchanges and b: exchanges for stress trensor components which we do
167        not have.
168      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
169        of evp, complete rewrite for lsr case (latter is does not yet work
170        in all cases)
171    o pkg/kpp: add code to have mixing in shelf ice caverns
172      - add myThid to all kpp routines (long overdue)
173    
174    checkpoint59
175    o pkg/exf:
176      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
177        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
178      - move exf header files from lower_case.h to UPPER_CASE.h ;
179        add missing cvs Header & Name
180      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
181      - add namelist param. selectStressGridPosition, exf_monFreq
182      - retire many _CLIM routines, and remove data.exf_clim
183        + params moved to data.exf
184        + climsst, climsss now handled by exf_set_gen, i.e.
185          climss?period=0 refers to constant field,
186          climss?period=-12 to monthly forcing
187      - split up namelists in data.exf
188    o pkg/seaice:
189      - remove seaice_exch and seaice_exch_uv
190      - remove superfluous exchange of theta
191      - add myThid to seaice_budget_ocean/ice
192      - add new interface for atmospheric wind forcing (C-grid only)
193        + new routine
194        + two new field (taux, tauy for stress over ice)
195        + removed one global field (DAIRN) for C-grid case only
196    o pkg/thsise
197      - 2nd set of modifs for thsice adjoint in conjunction with exf
198    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
199    
200    checkpoint58y_post
201    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
202      vertical diffusivity, similar to that in MOM4; turned on using
203      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
204      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
205    o Added capability for 3D specification of background vertical diffusion
206      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
207      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
208      "data" file that contains the 3D vertical diffusivity coefficients.
209    o ice dynamics (pkg/seaice) with thsice thermodynamics:
210      - add code within pkg thsice to advect & diffuse sea-ice fields
211      similar to (and will replace) what has been added in  seaice_advdiff.F,
212      but: - conserving Mass, Heat & Salt.
213           - better when using non-linear advection scheme (not yet fully tested)
214           - can also be used in atmospheric set-up (for now, only the diffusion).
215    
216    checkpoint58x_post
217    o IO option for global-file compact format:
218      - add options when generating topology (utils/exch2/matlab-topology-generator)
219      - add I/O capability (pkg/mdsio).
220      - adapt utils/matlab/rdmds.m to read this format.
221      for now long-line format not yet supported by pkg/mdsio (& exch2).
222    o shelfice: add a few diagnostics
223    
224    checkpoint58w_post
225    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
226      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
227      (and replace horiVertRatio in NH code).
228      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
229                         and tutorial_plume_on_slope (sensitive to truncation)
230    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
231      directly to drive seaice model (C-grid only)
232    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
233     - reintroduce computation of wind from stress,
234     - compute tau (in exf_bulkformulae.F) from windstress averaged to
235       mass points to avoid tau = 0
236     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
237    o rdmnc.m: make it work with "global" files created with gluemnc
238    o rdmnc.m : some improvements in dealing with singleton dimension
239      (tested on all testreport mnc output files).
240    o genmake2: disable pkg/profiles if netcdf test fails.
241    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
242    o move call to cal_readparms up to make calendar parameters/variable available
243      to all packages
244    
245    checkpoint58v_post
246    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
247      useDynP_inEos_Zc tested.
248    o pkg/exf: changes to properly interpolate/mask/scale initial fields
249    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
250      and portions thereof.  See read_cs.txt for description and examples.
251    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
252      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
253      following the great-circle arc between those 2 points.
254    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
255      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
256    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
257     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
258     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
259     - still needs work (not working with some options ; efficiency to improve)
260       and serious testing.
261     - use this scheme for temperature & salinity in 2 advection test exp.:
262       advect_xy & advect_xz, respectively.
263    
264    checkpoint58u_post
265    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
266    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
267    o testreport: add option "-skipdir" to skip some test.
268    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
269      momentum calculation.
270    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
271    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
272      remove checkpoint.F and the_correction_step.F (no longer used);
273      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
274    o add option (linFSConserveTr) to correct for tracer source/sink due to
275      Linear Free surface
276    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
277    o pkg/thsice: fix reading mnc-pickups
278    
279    checkpoint58t_post
280    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
281    o pkg/mdsio:
282     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
283       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
284       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
285     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
286     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
287       either MDS_READ_FIELD or MDS_WRITE_FIELD )
288     - new S/R (to replace MDSWRITEMETA), which allows to write more
289       informations (variable names, time ...) to meta files.
290     - modify rdmds.m to give back the meta file content.
291    o pkg/diagnostics: change vertical interpolation to be safer, and more
292       flexible (define p-levels to interpolate to in data.diagnostics);
293      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
294       diagnostic pointer.
295    o pkg/seaice: more cleaning up of seaice_growth, added many comments
296    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
297    o fix multi-category seaice:
298     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
299       SEAICE_MULTICATEGORY
300     - fix short wave heat flux
301    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
302       and allow to use EVP solver. Change forward lab_sea: test both EVP
303       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
304    o Initial check-in of lab_sea adjoint
305      (very similar to natl_box_adjoint/code_seaice)
306      * used C-grid and EVP solver
307      * used KPP, GM/Redi
308      * uses inAdExact=.TRUE.
309      * gradient checks fail for both ADM and TLM
310        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
311        f.d. gradients actually seem more problematic than ADM, TLM gradients;
312        issue is related to forward mismatch between g77 an ifort
313    o pkg/seaice: overhaul of thermodynamics
314     - growth.F and groatb.F are replaced by new routine seaice_growth.F
315     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
316     - move a few global fields out of SEAICE.h into seaice_growth.F and
317       make them 2D (FICE/QNETO/ ...)
318     - remove FO (it is the same as QNETO)
319     - introduce a few local fields to avoid modifying external fields such
320       as atemp, etc.
321    
322    checkpoint58s_post
323    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
324      changed exf_set_gen.F so that
325        genperiod=0 means input file is one time-constant field and
326        genperiod=-12 means input file contains 12 monthly means
327    o CG2D: use pre-computed solver main-diagonal (stored in common block);
328      this affects truncation error ; generate new output file for exp. which
329      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
330        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
331        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
332        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
333        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
334        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
335    o start implementation of deep-atmosphere and anelastic formulation
336    o verification: remove 2nd copy of input files and use script "prepare_run"
337      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
338    o mom_common/vecinv/fluxform: fix a few initialisation isssues
339    o profiles: fix for multithreaded case
340    
341    o diagnostics: rename few diags:
342      s/'PRESSURE'/'RCENTER '/g
343      s/'TICE    '/'oceFreez'/g
344      s/'TAUX    '/'oceTAUX '/g
345      s/'TAUY    '/'oceTAUY '/g
346      s/'SWFLUX  '/'oceQsw  '/g
347      s/DIFx/DFxE/g
348      s/DIFy/DFyE/g
349      and add few ocean-forcing diagnostics:
350      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
351    o modifications to pkg/seaice/growth.F and budget.F, which change results of
352      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
353      as actual snow thickness.  It now refers everywhere to effective snow
354      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
355    
356    checkpoint58r_post
357    o modifications to pkg/seaice/growth.F, which change results of
358      lab_sea experiment: fixes pertain to melting snow over open water, to
359      masking EVAP under sea ice, and to using the correct AREA variable for
360      computations of EVAP, PRECIP, HSNOW, and GHEFF
361    o add ability to read bathy, salt, and theta using MNC (off by def)
362    o add flooding algorithm and advection of HSNOW for pkg/seaice;
363      both are turned off by default and do no change any results
364    o seaice advection with pkg/thsice: a step toward the use of non-linear
365      advection scheme, but #ifdef or commented out for now (requires more EXCH).
366    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
367      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
368      in natl_box (affects results @ truncation level: update output.txt)
369    o multi-threading and IO:
370      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
371      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
372        (needed to work with SingleCpuIO): tested in all verif. exp.
373    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
374      affects the results (but none of the verification test uses this scheme).
375    o Adding some pkg/diagnostics capability to pkg/seaice
376      (will certainly be subject to changes)
377    o ctrl: adding new control variables:
378      lwflux, lwdown, evap, snowprecip, apressure, runoff
379    
380    checkpoint58q_post
381    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
382      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
383      high_res_cube configuration by 4% on Columbia.
384    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
385      add (in global_with_exf/code) a version of EXF_INTERP_READ without
386      dynamical allocation (seems to work in multi-threaded).
387    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
388      single CPU io) so that TAF does not have to see EESUPPORT.h
389    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
390    
391    checkpoint58p_post
392    o obcs: stop if obcs is used with useCDscheme = .true.
393    o shelfice:
394     - fix a sign error so that no slip at shelfice interface works
395     - remove stop for combination non-hydrostatic code and shelfice. That does
396       not mean, that the results are correct, but at least they are numerically
397       stable
398    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
399    o added adjoint exch routined for all exch*3d* routines
400      and updated flow directives
401    
402    checkpoint58o_post
403    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
404      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
405    o change controling S/R for writing pickup file (new S/R do_write_pickup)
406      and clean-up reading/writing of pickup files.
407    o fix local version of read/write pickup (NH part) in rotating_tank/code
408    o simplify EXCH interface:
409     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
410     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
411    o added the regrid package
412    o shelfice:
413     - add a simple boundary layer scheme to reduce noise
414     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
415    
416    checkpoint58n_post
417    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
418       local variable (not in common block).
419    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
420      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
421      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
422        to work with SingleCpuIO.
423    o add "_d 0" to real constant of pkg/cfc subroutines ;
424       update exp. cfc_exemple & tutorial_cfc_offline output files.
425    o multi-threading and IO:
426      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
427        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
428      - barrier before and after reading.
429      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
430      - avoid using MDS_WRITELOCAL for LAND pkg output.
431      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
432        common-block variables ; Allows multi-threading with master-thread IO.
433    o change default MAX_NO_THREADS from 32 to 4 ;
434      and stop cleanly when MAX_NO_THREADS is too small.
435    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
436    
437    checkpoint58m_post
438    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
439       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
440    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
441       keep global_ocean.90x40x15 (for AD testing) with former secondary test
442       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
443    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
444        add MITgcm_tutorials (= code + all the tutorials)
445    o ecco, option to compute cost for total ssh (mean+anom)
446    o consistent with addition of ptracer and ssh in pkg/profiles
447    o profiles: adding ptracer and ssh
448    o testreport: change multi-test output-file name
449      (from output.txt.{name} to output.{name}.txt)
450    o profiles: now ok for mutli-tiles case
451    o seaice: add 4 parameters for different advection schemes for area,
452      (effective) seaice thickness, enthalphy, and snow height. Their default
453      is the standard parameter SEAICEadvScheme
454    o calc_gw:
455     - add cosFacU in zonal viscous flux (harmonic.visc.).
456     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
457       of tutorial_plume_on_slope.
458    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
459    o calc_gw: true flux-form, account for horizontal grid spacing.
460      update rotating_tank results, but not plume_on_slope (affected at
461      truncation level, 11 digits).
462    
463    checkpoint58l_post
464    o calc_gw:
465     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
466     - remove side-drag for now (need to fix it); update plume_on_slope results.
467     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
468    o commit code to make SST/SSS weights spatially variable
469      (based on either variable in-situ or variable initial T/S weights)
470    o pkg/ecco:
471      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
472        now based on horizontally varying weights wthetaLev, wsaltLev
473      * cost_averagesflags now returns year indices in addition to day, month
474      * sflux balance is performed on annual basis
475        (sflxumm, sfluxmm2, bal_sfluxmm)
476      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
477        including separate counting and multipliers
478    o pkg/rbcs
479      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
480    
481    checkpoint58k_post
482    o testreport:
483     - always build in dir. "build" (if not there, mkdir build instead of building
484       & running in input)
485     - run in dir run (if it exists), in build otherwise.
486     - call prepare_run (if input/prepare_run exists)
487     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
488    o pkg/exf modifications to interpolation and rotation routines for more
489       reasonable treatment of North Pole singularity: for tracers North Pole
490       value is set to northernmost zonal-mean value, for zonal velocity it is
491       set to zero, and for meridional velocity it is set to northernmost value.
492    o pkg/exf/exf_check_range.F
493     - add tile index to diagnostics and move stop statement to the very
494       end of the routine.
495    o pkg/diagnostics: (diagnostics_main_init.F)
496      define title of isomorphic variables according to the current config.
497    o pkg/thsice with pkg/seaice dynamics:
498    - fix domain of computation (interior only, required for exf) and do exchanges
499    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
500    o towards a standard way of dealing with multi-threading in MONITOR
501      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
502    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
503       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
504    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
505    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
506    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
507       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
508    o tracer advection:
509     - clean-up and simplify calc_common_factors.F
510     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
511       advection subroutine (but still not used within DST advection S/R)
512    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
513    
514    checkpoint58j_post
515    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
516      from file (collects calls previously in FORWARD_STEP)
517    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
518    o adjoint store dir. adjusted accordingly
519    o genmake2
520      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
521    
522    checkpoint58i_post
523    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
524      on wind stress (SEAICEstressFactor defaults to 1.)
525    o Total number of Timers is finite (<=40): comment out 2 non-essential one
526      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
527    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
528      on CS-grid: no longer loosing mass.
529    o exf & curvilinear-grid: no longer modify longitude xC & xG.
530    o pkg/ggl90: fix sloppy output and fix a bug
531    o pkg/seaice: added SEAICEuseEVPpickup parameter
532      - Set to false in order to start EVP solver with
533        non-EVP pickup files when using SEAICEuseEVP
534      - fix sign error in diffusion in seaice_calc_rhs
535    
536    checkpoint58h_post
537    * Modifications for bottom topography control
538      o replace hFacC by _hFacC at various places
539      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
540      o add non-self-adjoint cg2d_nsa
541      o update autodiff support routines
542      o re-initialise hfac after ctrl_depth_ini
543      o works for 5x5 box, doesnt work for global_ocean.90x40x15
544    * Adding verification for 5x5 box (4-layer) bottom topography control
545    
546    checkpoint58g_post
547    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
548       used for mean seasonal cycle, mean diurnal cycle); add an example
549       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
550    o pkg/ggl90:
551      - add parameter (minimum surface kinetic energy)
552      - fix bug (avoiding division by zero)
553    o couple pkg/thsice to pkg/seaice:
554      - modify advection in seaice to accomodate new scalar fields to be advected
555      - only muliDimAdection scheme work with seaice/thsice
556      - mapping of thsice-variables to seaice-variables, back and forth
557      - does not break the verification experiments, but does not give the
558        desired results either
559    o pkg/seaice
560      - make (default) second order advection a bit less confusing?
561    
562    checkpoint58f_post
563    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
564      to pkg/seaice):
565      - new routines thsice_map_exf and thsice_get_exf provide the interface
566      - add an additional formal parameter to thsice_solve4temp
567    o pkg/exf:
568      - add new fields wspeed, snowprecip (to be able to couple to thsice)
569      - correct Stefan-Boltzmann constant
570      - new parameter for longwave surface emittance
571      - separate some stuff from exf_bulkformulae into new routines  
572        exf_radiation, exf_wind
573      - add new parameters and constants: longwave emissivity for ocean, ice
574        and snow, evaporation parameters over ice
575      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
576        either wind from stress or stress from wind
577    o pkg/thSIce:
578    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
579    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
580       and THSICE_CALC_THICKN
581    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
582    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
583      to make debugging easier.
584    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
585    o pkg/bulk_force:
586      - clean-up comments and parameters ;
587      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
588    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
589      generate new output for test-experiment: aim.5l_cs.thSI
590    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
591      testreport accordingly
592    
593    checkpoint58e_post
594    o SEAICE_CGRID adjoint done
595    o R_STAR adjoint implemented.
596      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
597      * need to sort out init. of h0facc, etc.
598    o Make pkg/profile fully independent of ecco,cost, etc. stuff
599      to be able to use it in pure forward.
600    
601    checkpoint58d_post
602    o upgrade simple test-experiment to tutorial example:
603     step.1: duplicate the experiment and (step.2) will remove the old copy.
604      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
605      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
606      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
607      tutorial_global_oce_biogeo    <- copy of dic_example
608      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
609      tutorial_plume_on_slope       <- copy of plume_on_slope
610      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
611      tutorial_global_oce_optim     <- empty for now (David ?)
612      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
613     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
614    o correct a sign problem in cost_scat.F
615    o obcs and ptracers: fix boundary conditions for advections schemes
616      with larger stencil
617    o thsice adjoint: start
618    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
619      completeness
620    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
621      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
622    o ptracers adjoint:
623      * avoid extensive recomputatations
624      * fix missing re-init. of gptr (missed by TAF)
625    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
626      me to turn off the excessive output to STDOUT that this package produces
627    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
628      and add those terms in Vector-Invariant formulation.
629    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
630      if the control period (xx_hfluxperiod etc) is 0
631    o in profiles pkg, clean routines and fix details
632    o in ecco pkg, reading ssh data:
633      fix problem in case the model does not start at iter0=0
634    o fix mnc-pickup/restart for ptracers
635    o new package prifiles:
636      code to compute profile-based cost by Gael Forget
637      (modifs in ecco, ctrl, autodiff)
638    o Benign bug fix in initialization (spotted by M. Mazloff) of
639      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
640    
641    checkpoint58c_post
642    o adjoint: finish NLFS adjoint and provide reference output in
643      verification/global_ocean.90x40x15/results_ad_nlfs
644    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
645      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
646      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
647      with SEAICE_CGRID defined.
648    o move calendarDumps from "data" to "data.cal" and clean-up the code
649      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
650    o add useEXF & useCAL flags (for now, set in hard-coded way)
651    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
652      (were missing in NH mode, and wrong in quasihydrostatic mode).
653      waiting for Chris updated version of calc_gw to add those CALLs.
654    o fix bug in quasihydrostatic S/R ;
655      add a test for this option: global_ocean.90x40x15.qshyd
656    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
657      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
658    o add on/off flag useOffLine for package OFFLINE
659    o seaice:
660      - modify advection so that it works also on the C-grid
661      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
662        problem in multi-tile runs with C-grid
663      - add flags for clipping ice velocities and/or masking solver forcing
664      - fix drag (ocean on ice) formulation and a bug that caused noise in the
665        C-grid solver
666      - added a few comments to seaice_diffusion.F
667      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
668        are now exclusive)
669      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
670        required re-ordering the code a little:
671       + make DAIRN global variable (defined in SEAICE)
672       + move computation of the viscosities eta and zeta into a new separate
673         routine (because I need to recompute them in seaice_ocean_stress.F)
674    
675    checkpoint58b_post
676    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
677      update output.txt of exp. aim.5l_cs.thSI
678    o various mnc cleanups and improvements:
679      + shrink lookup tables by factor of ~4
680      + better error reporting when running out of lookup space
681      + able to handle longer path/file names (up to 500 chars)
682    o adjoint:
683      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
684      - TBD: "hidden" mom_vecinv recomp. in dynamics
685    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
686     (allow to differentiate between forcing components using new integer flags:
687      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
688     and add new flag to put Dissipation tendency out of Adams-Bashforth.
689    o ecco
690      - enable trend removal from SSH anomaly obs.
691    o adjoint
692      - a fix for PmEpR when #undef EXACT_CONSERV
693      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
694      - try to fix "hidden" recomp. in forward_step for NLFS
695        (NLFS seems broken sometimes after I checked it in)
696    o seaice:
697     - add c-grid version of the dynamic solver:
698       + three new routines that are the c-grid substitute lsr, dynsolver
699         and ostres
700       + put a few fields that were local to dynsolver into global common
701         blocks, so that I can move the computation of stresses etc into
702         seaice_lsr (saves coding but may break the adjoint).
703     - replace more hardwired parameters by runtime parameters
704     - add ice masks that mask the rhs of the implicit solvers where there
705       is no ice (commented out in seaice_dynsolver, because i am not sure
706       if this works properly), eventually this should replace the clipping
707       of ice velocities in seaice_dynsolver to +/-40cm/s.
708    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
709      include it only where its needed
710    o move balancing of fluxes before the call of external_forcing_surf
711    o seaice:
712      - correct units of turning angles (now they are really in degrees)
713      - move computation of GWATX/Y out of main routine into dynsolver
714      - initialize GWATX/Y in seaice_init
715    o Apply mask on Fresh-Water flux (needed for SSH forcing).
716      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
717    o seaice: add runtime flags for turning angles (default to zero)
718    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
719      and trend from exf forcing and ctrl control adjustments
720    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
721      (since checkpoint57x_post)
722    o change the default rotation period to 86164.s = the Earth rotation
723    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
724      and based on a reference stratification. Tested within hs94.cs-32x32x5.
725    o seaice advection: add code for choosing between the default (2nd order
726      central differences) and multiDim advection schemes provided by
727      pkg/generic_advdiff
728    o seaice:
729      - removed all references to SEAICE_GRID.h fields from
730        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
731        (cubed-sphere configuration will change a little)
732      - grid computations in seaice_init are obsolete now.
733      - cleaned up code a little so that is easier to read (hopefully).
734      - added new (better?) discretizations of default advection and diffusion
735        (turn on with SEAICEuseFluxForm)
736      - replace 1 in 3d global fields by kSurface in growth.F
737      
738    checkpoint58a_post
739    o seaice:
740      - bug fix in advect.F
741    o shelfice:
742      - separate shelfice load anomaly from pload (breaks with time
743        dependent forcing), => introduce constant field shelficeLoadAnomaly.
744        Its default is 0., but it may be computed more cleverly from (unknown)
745        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
746        done offline. A good approximation of the pressure load anomaly is
747        necessary to avoid large initial adjustment processes underneath
748        deep-reaching shelfice.
749      - small fix in ISOMIP shelfice_thermodynamics
750      - add more sophisticated thermodynamics of Hellmer (1989), this is
751        now the default
752      - give a few constants more intuitive names
753    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
754      if bulk formulae are used in long integration (especially EmPmR). Turn
755      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
756      if balancePrintMean, the imbalance that is substracted is printed to
757      STDOUT.
758    o fix bug (typo) in obcs_apply_eta.F
759    o add a new package shelfice which enables us to model the circulation
760      underneath shelf-ice with draughts of hundreds of meters.
761     - works
762     - to do: + include improved thermodynamics
763              + check whether kSurfC (from model/inc/SURFACE.h) can be used
764                instead of new field kTopC
765              + can we use topoFile, Ro_surf and existing code in ini_depth.F
766                instead of new field R_shelfIce and new code in ini_depth.F
767                and ini_mask_etc.F?
768              + adjust vertical mixing schemes?
769    o seaice pkg:
770     - add a cpp-flag to include a simple formula for a salinity dependent
771       freezing point of sea water at the surface
772     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
773       meridional stresses are now different (and hopefully correct)
774    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
775       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
776       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
777    o pkg/diagnostics: add options and parameters for regional-statistics
778       diagnostics ; define regions by reading a region-mask from a file
779       (might add other options later)
780    o pkg/bulk_force:
781     - add option and parameters to use AIM surface-flux formulae.
782     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
783       others forcing fields (defined in PARM05, parameter file "data") are loaded
784       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
785     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
786     - use the right EXCH call for uwind,vwind (to work on CS-grid).
787     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
788       and parameters (note: calcWindStress replaces .NOT.readwindstress).
789     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
790    
791    checkpoint58
792    o add "--embed-source" option to genmake2 which, when the supporting
793      tools can be compiled (as determined by genmake2) will turn on the
794      embed_files package which then embeds the entire MITgcm source code
795      (*.[fFhc] + Makefile) used for the build within the executable
796      - requested by CNH but off by default
797      - adds a paltry <9MB to the mitgcmuv executable in most cases
798      - only writes the output when useEMBEDSRC in eedata is true
799    o clean up 3-dim. relaxation codes:
800      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
801      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
802      * Thanks to Tom Haine for testing!
803    
804    checkpoint57z_post
805    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
806      affects output (@ truncation level) of exp. plume_on_slope ; updated.
807    o fix the pickup behavior for obcs in combination with ptracers
808    o fix a bug in ptracers_external_fields_load
809    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
810      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
811    o transfered surface NH pressure to eta field (if exactConserv).
812    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
813         and update lab_sea output.txt file.
814    o completing 3-dim. relaxation code: additional term
815         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
816      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
817      * At compile time, in "EXF_OPTIONS.h" set
818          #define  ALLOW_CLIMTEMP_RELAXATION
819          #define  ALLOW_CLIMSALT_RELAXATION
820      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
821          tauThetaClimRelax3Dim = 15552000.0,
822          tauSaltClimRelax3Dim  = 15552000.0,
823      * 3 cases:
824          1) Use a constant-in-time 3-dim. field
825          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
826          3) Real-time relax. to time-evolving prescribed field
827    o Adding Laplacian-type smoothness constraint on
828      initial and boundary (forcing) controls (ic, bc)
829      * enable at compile-time via
830        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
831      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
832      * Absolute scale somewhat unclear so far
833      * no area weighting was included since no other cost term does so far
834    
835    checkpoint57y_post
836    First step for a NLFS adjoint
837    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
838    o new init. routines for calc_r_star, calc_surf_dr
839    o still need to deal with ini_masks_etc
840    o testreport seemed happy
841    checkpoint57y_pre
842    
843    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
844    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
845    o add new offset feature to offline pkg (plus minor cleanup)
846    o cfc fixes for final year of integration
847    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
848      be in GCHEM_OPTIONS).
849    
850    checkpoint57x_post
851    o fix testreport Pb in multiple test experiment.
852    o cleanup our namelist syntax in verification:
853      - make it more F95 standards compliant (some work still needed)
854      - allows the vast majority of our tests to work with gfortran
855    o Non-Hydrostatic:
856     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
857     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
858    o Allow to apply AB on T,S rather than on AB(gT,gS):
859     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
860     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
861       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
862     - need a "clever" read_pickup to restart from the other AB formulation
863    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
864    o remove some unused variables (reduces number of compiler warnings)
865    o adjoint
866      * Disable useVariableViscosity for adjoint for time being
867        (there are a number of extensive recomputations)
868      * Initialize certain variables needed for adjoint
869    
870    checkpoint57w_post
871    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
872                 fix the singleCpuIO RS version of MDSWRITEFIELD
873       and add a WARNING if using globalFiles=T with multi-processors.
874    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
875      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
876    o tracer advection scheme:
877      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
878       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
879       was not very convenient).
880      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
881       (further tests needed for the implicit DST & Flux-Limiter schemes).
882    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
883      and sRef for convenience, handy, when you want to initialize
884      ptracers in a large domain with a constant non-zero value. Also,
885      untangle ptracers_init.F a little.
886    
887    checkpoint57v_post
888    o change dome exp. to use variable viscosity in side-drag terms.
889    o remove all the files from the cfc_offline test since they are now
890      incorporated into tutorial_cfc_offline which has been producing
891      identical results for a few days of testing
892    o add new parameter: sideDragFactor to enable half-slip-side BC
893      and change side-drag S/R to use viscosity from mom_calc_visc
894      (can switch back by setting sideDragFactor=0.); affects results at
895      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
896       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
897    o vorticity & strain are now computed without masking, to account for
898      no-slip-side BC in variable viscosity calculation ; mask is applied
899      anyway later on, before computing advection/coriolis terms.
900    o modify exp4 to test new obcs support for reading from external files
901      and for passive tracers
902    o fix behavior of ptracers_monitor when monitor output is written to a
903      netcdf-file; still not independent of monitor.F (writes in the same
904      file).
905    o change default value of tRef (put a uniform, meaningful value for ocean
906      & atmos) and initialize sRef (was missing, as Martin mentioned).
907    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
908      to be proportional to enstrophy dissipation length.  Thus,
909       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
910      This is now consistent with Smagorinsky and with the manual.
911    
912    checkpoint57u_post
913    o OBCS and PTRACERS: add open boundary support for passive tracers
914      - either use homogenous (pseudo) v.Neumann conditions or prescribe
915        OB-values from file; this is not different from the way theta and salinity
916        are treated
917      - however, Orlanski-radiation conditions are not supported, and the model
918        will stop if you use pTracers and Orlanski at the same time.
919      - beefed up the rountine obcs_external_fields_load: now only those open
920        boundary values are overwritten with values from files for which there
921        are really files, otherwise the OB-fields remain untouched. This makes
922        it possible to use different OBs at different ends of the domain (as
923        with EXF)
924    o reduce number of exch calls in shap_filt (s2).
925    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
926      truncation level) 4/5 MLAdjust test results (11&12 digits match).
927    
928    checkpoint57t_post
929    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
930    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
931      same truncation, independent of the face number: affects affects several
932      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
933    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
934      note that biharmonic viscosity + no-slip was not tested in any experiment.
935    o fix bug in non-linear free-surf side-drag ; generate new output for
936      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
937    o make mnc honor the writeBinaryPrec flag for most kinds of output
938    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
939    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
940      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
941    o add brackets in multi-terms sum to get same truncation, independent of
942      the face number (manage to get exactly same value of gU,gV at the cs-edge)
943      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
944    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
945      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
946      a maximum grid-scale Reynolds number.  Also, changes all length calculations
947      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
948      Suggested values of viscosity parameters found in mom_calc_visc.
949      Many new viscosity diagnostics available.
950    
951    checkpoint57s_post
952    o Add clearing-house for viscosity calculations, mom_calc_visc and
953      correct numerous bugs in LeithD and Smagorinsky discretizations.  
954      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
955      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
956      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
957      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
958      The Strain-Tension form is now called with useStrainTensonVisc=.true.
959      ViscAhStrain and viscAhTension are now retired.
960    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
961    o In response to JMC's bug report, genmake2 now ignores any soft-links
962      that it finds in the *current* directory when searching for files.
963      Soft-links found in any other source directories will still work as
964      they did before.
965    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
966      a C routine to unlimit the stack size
967    o mnc-ify pkg/aim snapshot vars
968    o mnc-ify pkg/land as requested by Daniel
969    o various changes to mnc including:
970      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
971      - output can now be grouped so that all files within a group
972          change the ITER portion of their names in lock-step together
973      - can now read ("global") PER-FACE (in addition to PER-TILE) files
974          and works with both EXCH1 and EXCH2 (but needs more testing)
975      - writing works for all verification test cases w/ g77 on Linux
976    
977    checkpoint57r_post
978    o make MNC variable initialization happen earlier
979    o add diagnostics for (almost) each term of the momentum Eq.
980    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
981    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
982    o remove MINIMAL_TAVE_OUTPUT option ;
983      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
984    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
985      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
986    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
987    o add time-dependent SST, SSS control
988    o cost terms in ecco/ modularized (new cost_generic.F)
989    o cost_averages routines are modularized (new cost_averagesgeneric.F)
990    o new infrastructure for seaice model vs. obs misfits in seaice/
991      * driver from the_main_loop.F is seaice_cost_driver.F
992      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
993      * gradient check in Exp. 6a of natl_box_adjoint/
994    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
995      (see README file)
996    
997    checkpoint57q_post
998    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
999    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1000      - bug was reported by Jean-Michel and Ian Fenty
1001    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1002      update exp. cpl_aim+ocn output.
1003    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1004      Needed for high-res. runs with large global files
1005      to be able to limit tapelev size
1006    o Changed some tests for adjoint:
1007      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1008      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1009      * global_ocean.90x40x15/ back to default 3-level checkpointing
1010    o Modifications to enable scripted COMMON to MODULE conversion
1011      * verification/OpenAD/code/ has necessary scripts and description;
1012      * converts, compiles and runs successfully;
1013    
1014    checkpoint57p_post
1015    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1016    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1017      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1018    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1019    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1020      (was already the case for dissipation with mom_vecinv,
1021       and also the case for grad.PhiHyd when staggered-timeStep)
1022      This will allow to put dissipation out-off the AB time-stepping.
1023     Unfortunately, affects truncation error. Update output of exp. that "fails"
1024      (cg2d matching number) and leave the others for later: front_relax(10),
1025      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1026      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1027    
1028    checkpoint57o_post
1029    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1030      (2) its ready to be documented during the 20050801 DocFest
1031    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1032      for ideal_2D_oce and lab_sea on linux_ia32_g77
1033    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1034      in global1x1_tot/code_seaice_adj to access indices 32, 33
1035      (worth another tag)
1036    
1037    checkpoint57n_post
1038    o adding precip control xx_precip 32
1039    o adding swflux control xx_swflux 33
1040    o Replacing 10 forcing penalty cost routines by 1 generic.
1041    o Implementing partitioning in time-mean and variable adjustment
1042      for atmos. state.
1043    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1044    o in natl_box_adjoint:
1045      * updated exp 1 to 10
1046        (but does not have time-mean vs. variable split results yet)
1047    o updated global1x1/*_seaice_adj/
1048      to incorporate latest changes
1049    o enable useSingleCpuIO for mdsio vector routines
1050      (applies in particular to tapelev I/O)
1051    o removed inefficient K-loop in all active_file*control*.F
1052    
1053    checkpoint57m_post
1054    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1055      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1056    o pkg/exch2: filling of face-corner halo regions is optional
1057      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1058    
1059    checkpoint57l_post
1060     tag before updating tutorials (pre-release-2)
1061    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1062       for output and interpolation of input fields onto model grid)
1063    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1064       Affects results of exp. rotating_tank ; update output.txt.
1065    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1066          and taking the square quantity and/or using a fraction-weight field.
1067    o fix aim_diagnostics_init.F mate numbers.
1068    o add mnc output capability to diagnostics/diagstat and update
1069      our cvsignore files for the ACSII output generated
1070    
1071    checkpoint57k_post
1072    o lab_sea now uses diagnostics package and provides a suite of
1073      new EXF diagnostics output.
1074    
1075    checkpoint57j_post
1076    o exf
1077      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1078        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1079        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1080      * extended diagnostics output
1081        - now includes all EXF variables
1082        - hs, hl moved to common block
1083        - separate S/R for diagnostics, called after ctrl vector is added
1084        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1085        - EXFqnet contains true Qnet (i.e. includes qsw)
1086      * updated verif. lab_sea, global_with_exf
1087      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1088        to ensure that diagnostics sees a true EXFqnet
1089    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1090    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1091      several times with different frequencies.
1092    o mnc-ify the thsice package as requested by Daniel Enderton
1093      - the monitor--MNC output needs work
1094      - many attributes need to be added (most are currently blank)
1095    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1096      - many attributes need to be added (most are currently blank)
1097    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1098    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1099    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1100      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1101         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1102    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1103     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1104    
1105    checkpoint57i_post
1106    o Diagnostics package was changed: diagnostic allocation is now deactivated
1107      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1108    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1109      add 1rst Order upwind vertical Shear.
1110    o add a quick fix for A/B checkpointing in OFFLINE mode
1111    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1112      end-run around the C/Fortran linking horror in eesup/src/timers.F
1113    o added pkg/runclock: allows user to terminate run based on wall clock
1114    o added non-hydrostatic scaling parameter: nh_am2
1115    o pkg/my82: futile attempt to make results compiler-independent by adding
1116      some "_d 0", etc. no effect.
1117    o for mnc output, fill the 'T' coordinate var with myTime and create a
1118      separate 'iter' variable for iteration count
1119    o pkg/diagnostics:
1120      add new capability: output of Global/Regional & per-level statistics ;
1121      tested against monitor output (including land & thSIce) on various exp.
1122    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1123    
1124    checkpoint57h_done
1125      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1126      data.diagnostics, data.gchem, data.ptracers) is done.
1127    
1128    o pkg/diagnostics: prepare for Global/Regional statistics.
1129      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1130    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1131      and rename it: DIFFERENT_MULTIPLE
1132    
1133    checkpoint57h_post
1134    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1135    o pkg/diagnostics: change output frequency, now in seconds (instead
1136      of Nb of iterations). This requires to change data.diagnostics.
1137    checkpoint57h_pre
1138    
1139    o in mnc, let the user create the output dir if both mnc_outdir_date
1140      and mnc_outdir_num are false
1141    o add fflags() to pkg/diagnostics which allows one to specify, on a
1142      per-file basis, the file precision [default behavior is unchanged]
1143    o added diagnostics to pkg/kpp, including computation of mixed layer
1144      depth based on a temperature/density criterion
1145    o updated verification/natl_box to test the new pkg/kpp diagnostics
1146    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1147    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1148    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1149      not mnc -- this mistake was found by JMC and is now corrected
1150    
1151    checkpoint57g_post
1152    o add Adams-Bashforth 3rd Order time stepping:
1153      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1154      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1155    checkpoint57g_pre
1156    
1157    o make lambda[Theta,Salt]ClimRelax spatially varying
1158      (default remains spatially uniform constant based on tau)
1159    o added new control variables
1160      * init. uVel, vVel, etanN
1161      * lambda[Theta,Salt]ClimRelax
1162    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1163      (suggested by G. Forget)
1164    
1165    checkpoint57f_post
1166    o add parameter "baseTime" = model base time = time at iteration zero
1167      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1168      account for baseTime shift
1169    o move Coriolis arrays from PARAMS.h to GRID.h
1170    checkpoint57f_pre
1171    
1172    o mnc-ifying the seaice package
1173    o introduced an alternative length scale calculation for use in the limiting
1174      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1175    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1176    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1177      as well as grad(vort3).  Made it compatible with both approximate form
1178      for the cubed sphere and full form of these gradients.  Added flag
1179      useFullLeith to select between approximate and full form.  
1180    o add "d0" in getcon.F to reduce differences between compilers/platforms
1181      update output.txt of exp. fizhi-gridalt-hs
1182    o change port_rand funtion to allow to set the seed.
1183    o fix obscure MNC bug involving conversion between reals and integers
1184      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1185        new version is now more standards-compliant
1186    o adjoint-related modifications
1187      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1188      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1189      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1190    
1191    checkpoint57e_post
1192    o Adding eddy stress controls a la Ferreira et al.
1193    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1194    
1195    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1196      update output.txt of exp. fizhi-gridalt-hs
1197    o add more "Z" dimensions and associated coordinate vars to MNC
1198    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1199    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1200      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1201      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1202      months and years.  Requires pkg/cal.
1203    o diagnostics: add pickup functionality
1204      - off by default for backwards compatibility
1205      - current version only uses MDSIO -- MNC will be added
1206    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1207    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1208    
1209    checkpoint57d_post
1210    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1211    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1212      output from the diagnostics package
1213    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1214    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1215      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1216    o add coordinate variables to the MNC output from the diagnostics package
1217    o change MNC-flags default value: true when useMNC=TRUE
1218    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1219      the ability (off by default) to read the grid information using MNC
1220    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1221    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1222    o do snap-shot diagnostics at the middle of the time-interval (instead of
1223      at the end).
1224    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1225      new test for AIM with thSIce + slab-ocean
1226    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1227    o move state variable diagnostics to the beginning of the time step ;
1228      (note: still needs some work specially for snap-shot diagnostics)
1229      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1230    
1231    checkpoint57c_post
1232    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1233    o generate new output.txt files on faulks with g77 & the new -ieee option
1234    checkpoint57c_pre
1235    
1236    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1237      update output.txt of exp. global_ocean.90x40x15
1238    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1239      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1240    o add saltFlux(+File) forcing capability with periodicExternalForcing
1241    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1242    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1243    o improvements for the MNC output from DIAGNOSTICS:
1244      - correct handling of the unlimitied dimension
1245      - all dims now have associated coordinate variables
1246      - variables located at U, V, and Corner ("Z") points are now written
1247        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1248        *all* data points are output
1249    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1250    o added pkg/seaice/seaice_monitor.F
1251    o mdsio_readfield.F can now read files visible only to master MPI process.
1252    o pkg/seaice: some test code for ice-modified ocean stress
1253    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1254      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1255      spurious negative numbers for precipitation and humidity.  Will cause
1256      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1257    o pkg/ctrl/
1258      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1259        May be enabled via doPackDiag
1260      *  introduce z-scaling of
1261         + gradient (doZscalePack) and
1262         + control (doZscaleUnpack)
1263    o pkg/mdsio/
1264      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1265      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1266    
1267    checkpoint57b_post
1268    o simplify options in diagnostics_fill arguments (remove weird combinations)
1269    o fix MNC coordinate variables so that they now contain per-face index
1270      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1271      general, EXCH2 grids are only aligned to a "local" coordinate system
1272    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1273    o Implement instantaneous output within pkg diagnostics:
1274      setting a negative frequency in data.diagnostics produces
1275     "snap-shot" output (as opposed to time-average if freq > 0)
1276    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1277      NOTE: change ptracer diagnostics name: use 2 characters to work with
1278            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1279    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1280      becomes the coordinate variable for the 'T' dimension
1281    o add CF-style coordinate variables to MNC
1282      - just a first cut:  numbers are meaningless on the cubesphere and
1283        missing along the T axis but otherwise it works!
1284    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1285    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1286    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1287      this is based directly on what the model compute, so that the content of
1288      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1289    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1290    o clean up build options files for SunOS, in particular
1291      - remove -traditional from xmakedepend
1292      - change -xarch=v9 to -xarch=native for f77
1293      - restore use of make (not gmake)
1294      - add CC=gcc if using g77
1295    o changes per discussion of AM, JMC, & EH3 today:
1296      - move redundant "grid" variables out of "state" -- in preparation of
1297        creating proper CF-style coordinate variables and in recognition
1298        that any/all grid variables can be easily copied (eg. w/NCO) from
1299        the grid files into any of the other NetCDF files
1300      - *always* output grid variables with MDSIO (this will eventually be
1301        changed)
1302      - output MNC grid file if useMNC is true
1303    o every instance of _END_MASTER() has been found and replaced with
1304      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1305      preprocessors
1306    o re-arrange diagnostics pkg initialisation:
1307     - allow each package to extend the available diagnostics list
1308     - add some checking and fix small problems (multi-threaded, ...)
1309     - new S/R diagnostics_fill (replace fill_diagnostics):
1310       look through the short list of active diag. (instead of the long list)
1311       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1312    
1313    checkpoint57a_post
1314    o this set of changes restores TAMC compatibility
1315      tested for global_ocean.90x40x15 adjoint on trough
1316      (what a pain)
1317    
1318    checkpoint57a_pre
1319    o some modifs in tools/build_options for sunos
1320    o call ctrl_pack for ctrl at end for optimcycle=0
1321    
1322    checkpoint57
1323    o add horizontal bi-harmonic viscosity for vertical velocity
1324      - new parameter viscA4W (defaults to viscA4)
1325      - affects only non-hydrostatic code
1326      - to be done: no-slip lateral boundary conditions
1327    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1328    o implement Implicit Vertical advection for pTracers
1329    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1330      (implemented also for implicit vertical diffusion & advection)
1331    o OBCS: extend application of tracer open boundary conditions
1332      to a strip beyond the boundary of width Olx/Oly
1333    o add call monitor to TAF set of required calls (flow directives)
1334      and include in natl_box_adjoint
1335    o untangle a few ifdefs related to cost, ctrl, autodiff
1336      untangel a few ALLOW_ECCO_OPTIMIZATION
1337    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1338      (theta2, salt2 in ecco_cost_weights)
1339    
1340    checkpoint56c_post
1341    o OBCS as control variables
1342      - update ctrl_ad_diff.list, obcs_ad_diff.list
1343      - remove balance of obcs controls from default
1344      - fix index bug nobcs in ctrl_init
1345      - fix dummy fields filen in ctrl_pack
1346      - add dummy weights for obcs
1347    o lsopt: comment out fort.94 output
1348    o optim:
1349      - remove unnecessary header files
1350      - adjusted namelists
1351      - add xerbla.F to Makefile
1352    o exf:
1353      - multiple modifications of exf_check_range
1354      - unit change in exf_init_runoff from [m/year] to [m/s]
1355    o mdsio:
1356      - i/o-vector change debugLevel from debLevA to debLevB
1357    
1358    checkpoint56b_post
1359    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1360      is called from DO_THE_MODEL_IO
1361      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1362      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1363      - clean up PTRACERS_WRITE_TIMEAVE a little
1364    o add another verification experiment that tests both the cfc-pkg and
1365      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1366      reactive tendencies treated inline with regular timestepping
1367    o testreport previously did a lousy job of comparing small numbers, so
1368      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1369      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1370      testreport.
1371    o ptracers_monitor: bug fix for MPI
1372    
1373    checkpoint56a_post
1374    o GCHEM: finish reorganizating the package
1375      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1376        (introduces another 3D-array for each passive tracer, but only if
1377        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1378        gchemTendency is not needed because the timestep is done separately)
1379      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1380      - GCHEM is now---more or less cleanly---separate from PTRACERS
1381      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1382        so clear to me how that should be done in a general way.
1383    o CFC: improve formatting of output in CFC_ATMOS
1384    o PTRACERS:
1385      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1386        that ALL experiments with ptracers enable can be checked. This makes
1387        GCHEM_MONITOR obsolete.
1388      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1389        monitorFreq
1390      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1391    o add PTRACERS (PTR0[1-5]) to testreport output
1392    o exf_check_range:
1393      * default changed to .TRUE.
1394      * will check values for niter0 if debLevA, every timestep if debLevB
1395      * STOP in exf_check_range if 'out of range'
1396      * range chosen generous to allow for potential extema
1397      TBD: a version with stricter range
1398           permitted range would be runtime parameters
1399  o GMredi:  o GMredi:
1400    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1401    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
# Line 11  o GCHEM: Line 1404  o GCHEM:
1404    - move call to GCHEM_FORCING_SEP, so that it is now called before    - move call to GCHEM_FORCING_SEP, so that it is now called before
1405      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1406    - introduced a useGCHEM runtime flag and applied it everywhere.    - introduced a useGCHEM runtime flag and applied it everywhere.
1407      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1408        this flag is now only visible within GCHEM-pkg routines.
1409      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1410        be replaced by a 3D array that is computed before thermodynamics; for
1411        this, the tracer ID iTracer had to be included into the parameter list
1412        of ptracers_forcing
1413      - set up forward_step to call gchem_forcing, that will replace
1414        gchem_forcing_int in ptracers_forcing
1415      - cleaning up
1416  o small cleaning of exch2: remove files that are also in eesupp/src  o small cleaning of exch2: remove files that are also in eesupp/src
1417    
1418  checkpoint56  checkpoint56

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