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revision 1.232 by jmc, Wed Dec 31 20:29:54 2003 UTC revision 1.825 by mlosch, Wed May 30 10:56:27 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/obcs:
8     - bug fix for balance code
9    o pkg/seaice:
10      - allow values of SEAICE_elasticParm > 1
11      - add new parameter SEAICE_evpTauRelax as an alternative to SEAICE_elasticParm
12      - make lsr boundary conditions free slip (by default), changes result
13      - add code for no slip boundary conditions for lsr
14      - set minimum of zeta to zero (and not 4e8) (changes results)
15    o change calculation of Visbeck K:
16      - no longer depend on tapering scheme; instead, compute slope (limited
17        by GM_maxSlope). this is equivalent to what was comuted before with
18        clipping or linear tappering.
19      - fix vertical averaging (wrong by 1 level)
20      - leave the old version (but will not be maintained) within
21        #ifdef OLD_VISBECK_CALC / #endif
22    o change error catch in calc_r_star to improve vectorization
23    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
24      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
25    
26    checkpoint59b
27    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
28      - export/import (between ocean & coupler) fields needed for ocean DIC.
29    o pkg/seaice:
30      - get rid of three more exchanges seaice_calc_viscosities (required
31        different loop boundaries in seaice_lsr and seaice_ocean_stress)
32      - bug fix in seaice_ocean_stress (update of lab_sea required)
33      - reduce loop boundaries to necessary minimum also in seaice_evp
34      - go back to the old way of computing deltaC/Z as the adjoint likes that
35        better
36    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
37      passive tracer to an Age Tracer) + update output.txt
38    o pkg/exf:
39      - implement A-grid / C-grid selection for wind-stress input files.
40      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
41      for now, in exf_bulk_largeyeager04.F only :
42      - change implementation for case where windspeed + 2. components wind-stress
43        are read-in. AND use rhoConstFresh to convert evap.
44    o pkg/seaice:
45      - use correct EXCH_UV for wind-forcing (on A-grid).
46      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
47        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
48    o pkg/exf:
49      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
50      EXF_INTERPOLATION:
51      - merge global_with_exf/code version of exf_interp_read.F
52        to the main code ;
53      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
54        reading the file ; Important: This options needs to be defined to recover
55        previous code.
56        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
57      - no longer loose real*8 precision along the way when using exf_iprec=64.
58    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
59      - change discretisation of evp-solver in order to avoid another exchange
60        (changes lab_sea) and clean up a little
61      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
62        help the adjoint (this also changes the results slightly)
63      - add a few "_d 0" where they had been missing in seaice_evp.F
64      - cleaning up: remove unused seaice_calc_rhs.F
65    o pkg/exf: some cleaning-up:
66      - change various "constants" into runtime parameters
67      - cleaned-up Large&Yeager04 routine which should eventually
68        replace exf_bulkformulae.F (changed names of S/R and CPP)
69        and merged various ALLOW_ATM_WIND options
70     only used with thsice pkg (in thsice_get_exf.F):
71      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
72        which are used when useStabilityFct_overIce=TRUE (= the default)
73      - change default values of ice & snow emissivity and scale downward LW
74        by ice & snow emissivity.
75    o pkg/thsice:
76     fix few little problems, in thsice_calc_thickn.F:
77      - growth vertically (and not laterally) if iceFrac == iceMaskMax
78      - melt laterally only if hIce < hThinIce (as the comments say)
79      and in thsice_extend.F:
80      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
81      - start to form ice as soon as the minimum ice-volume is reachable.
82     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
83      and cpl_aim+ocn
84    o pkg/kpp
85     - move computation of surface related input fields to KPP into a new
86       subroutine kpp_forcing_surf.F
87     - remove wrong (within bi,bj loops) EXCH calls.
88     - little cleaning (add argument myThid in last position, cvs header ...)
89     - for now, fix conservation problem by exchanging KPPviscAz (may not
90       be the best fix)
91    o pkg/seaice
92     - check for inconsistent evp parameter/cpp-flag combination
93     - remove leftover errIO flat for obsolete name list error handling
94    o OpenAD
95     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
96    
97    checkpoint59a
98    o pkg/seaice: some parameter clarifications and a little bit of clean up
99    o pkg/thsice: rename run-time parameters:
100       himin       -> hIceMin
101       himin0      -> hThinIce
102       hihig       -> hThickIce
103       i0          -> i0swFrac
104       transCoef   -> bMeltCoef
105       frac_energy -> fracMelting
106      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
107       with default values (for now) that do not change the results.
108      remove old version of thsice vars advection in pkg/seaice.
109    o in FFIELDS.h:
110      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
111      - make pLoad & sIceLoad always available (but still only used if
112         ATMOSPHERIC_LOADING is #define).
113    o pkg/kpp: replaced _KPP_RL with _RL
114    o bug fixes for vertical diffusivity computations when both KPP and
115        3D diffusivity arrays are used.
116    o pkg/seaice: fix bug in evp solver, while doing that
117      - change (improve?) discretization of stress computations for both
118        cgrid-lsr and evp solver
119      - add a new routine to compute strain rates
120      - the above changes lab_sea results
121      - add no slip conditions for evp solver (off by default), lsr-version
122        may follow
123      - fix exchange for shear at Z-points (does not change lab_sea)
124      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
125        (to force the user to pick a time step since there is not "safe" way
126        of choosing it)
127      - add principal stress diagnostics
128      - rearrange fields for evp a little to avoid having to call a: too many
129        exchanges and b: exchanges for stress trensor components which we do
130        not have.
131      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
132        of evp, complete rewrite for lsr case (latter is does not yet work
133        in all cases)
134    o pkg/kpp: add code to have mixing in shelf ice caverns
135      - add myThid to all kpp routines (long overdue)
136    
137    checkpoint59
138    o pkg/exf:
139      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
140        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
141      - move exf header files from lower_case.h to UPPER_CASE.h ;
142        add missing cvs Header & Name
143      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
144      - add namelist param. selectStressGridPosition, exf_monFreq
145      - retire many _CLIM routines, and remove data.exf_clim
146        + params moved to data.exf
147        + climsst, climsss now handled by exf_set_gen, i.e.
148          climss?period=0 refers to constant field,
149          climss?period=-12 to monthly forcing
150      - split up namelists in data.exf
151    o pkg/seaice:
152      - remove seaice_exch and seaice_exch_uv
153      - remove superfluous exchange of theta
154      - add myThid to seaice_budget_ocean/ice
155      - add new interface for atmospheric wind forcing (C-grid only)
156        + new routine
157        + two new field (taux, tauy for stress over ice)
158        + removed one global field (DAIRN) for C-grid case only
159    o pkg/thsise
160      - 2nd set of modifs for thsice adjoint in conjunction with exf
161    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
162    
163    checkpoint58y_post
164    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
165      vertical diffusivity, similar to that in MOM4; turned on using
166      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
167      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
168    o Added capability for 3D specification of background vertical diffusion
169      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
170      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
171      "data" file that contains the 3D vertical diffusivity coefficients.
172    o ice dynamics (pkg/seaice) with thsice thermodynamics:
173      - add code within pkg thsice to advect & diffuse sea-ice fields
174      similar to (and will replace) what has been added in  seaice_advdiff.F,
175      but: - conserving Mass, Heat & Salt.
176           - better when using non-linear advection scheme (not yet fully tested)
177           - can also be used in atmospheric set-up (for now, only the diffusion).
178    
179    checkpoint58x_post
180    o IO option for global-file compact format:
181      - add options when generating topology (utils/exch2/matlab-topology-generator)
182      - add I/O capability (pkg/mdsio).
183      - adapt utils/matlab/rdmds.m to read this format.
184      for now long-line format not yet supported by pkg/mdsio (& exch2).
185    o shelfice: add a few diagnostics
186    
187    checkpoint58w_post
188    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
189      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
190      (and replace horiVertRatio in NH code).
191      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
192                         and tutorial_plume_on_slope (sensitive to truncation)
193    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
194      directly to drive seaice model (C-grid only)
195    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
196     - reintroduce computation of wind from stress,
197     - compute tau (in exf_bulkformulae.F) from windstress averaged to
198       mass points to avoid tau = 0
199     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
200    o rdmnc.m: make it work with "global" files created with gluemnc
201    o rdmnc.m : some improvements in dealing with singleton dimension
202      (tested on all testreport mnc output files).
203    o genmake2: disable pkg/profiles if netcdf test fails.
204    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
205    o move call to cal_readparms up to make calendar parameters/variable available
206      to all packages
207    
208    checkpoint58v_post
209    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
210      useDynP_inEos_Zc tested.
211    o pkg/exf: changes to properly interpolate/mask/scale initial fields
212    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
213      and portions thereof.  See read_cs.txt for description and examples.
214    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
215      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
216      following the great-circle arc between those 2 points.
217    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
218      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
219    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
220     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
221     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
222     - still needs work (not working with some options ; efficiency to improve)
223       and serious testing.
224     - use this scheme for temperature & salinity in 2 advection test exp.:
225       advect_xy & advect_xz, respectively.
226    
227    checkpoint58u_post
228    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
229    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
230    o testreport: add option "-skipdir" to skip some test.
231    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
232      momentum calculation.
233    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
234    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
235      remove checkpoint.F and the_correction_step.F (no longer used);
236      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
237    o add option (linFSConserveTr) to correct for tracer source/sink due to
238      Linear Free surface
239    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
240    o pkg/thsice: fix reading mnc-pickups
241    
242    checkpoint58t_post
243    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
244    o pkg/mdsio:
245     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
246       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
247       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
248     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
249     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
250       either MDS_READ_FIELD or MDS_WRITE_FIELD )
251     - new S/R (to replace MDSWRITEMETA), which allows to write more
252       informations (variable names, time ...) to meta files.
253     - modify rdmds.m to give back the meta file content.
254    o pkg/diagnostics: change vertical interpolation to be safer, and more
255       flexible (define p-levels to interpolate to in data.diagnostics);
256      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
257       diagnostic pointer.
258    o pkg/seaice: more cleaning up of seaice_growth, added many comments
259    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
260    o fix multi-category seaice:
261     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
262       SEAICE_MULTICATEGORY
263     - fix short wave heat flux
264    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
265       and allow to use EVP solver. Change forward lab_sea: test both EVP
266       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
267    o Initial check-in of lab_sea adjoint
268      (very similar to natl_box_adjoint/code_seaice)
269      * used C-grid and EVP solver
270      * used KPP, GM/Redi
271      * uses inAdExact=.TRUE.
272      * gradient checks fail for both ADM and TLM
273        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
274        f.d. gradients actually seem more problematic than ADM, TLM gradients;
275        issue is related to forward mismatch between g77 an ifort
276    o pkg/seaice: overhaul of thermodynamics
277     - growth.F and groatb.F are replaced by new routine seaice_growth.F
278     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
279     - move a few global fields out of SEAICE.h into seaice_growth.F and
280       make them 2D (FICE/QNETO/ ...)
281     - remove FO (it is the same as QNETO)
282     - introduce a few local fields to avoid modifying external fields such
283       as atemp, etc.
284    
285    checkpoint58s_post
286    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
287      changed exf_set_gen.F so that
288        genperiod=0 means input file is one time-constant field and
289        genperiod=-12 means input file contains 12 monthly means
290    o CG2D: use pre-computed solver main-diagonal (stored in common block);
291      this affects truncation error ; generate new output file for exp. which
292      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
293        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
294        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
295        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
296        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
297        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
298    o start implementation of deep-atmosphere and anelastic formulation
299    o verification: remove 2nd copy of input files and use script "prepare_run"
300      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
301    o mom_common/vecinv/fluxform: fix a few initialisation isssues
302    o profiles: fix for multithreaded case
303    
304    o diagnostics: rename few diags:
305      s/'PRESSURE'/'RCENTER '/g
306      s/'TICE    '/'oceFreez'/g
307      s/'TAUX    '/'oceTAUX '/g
308      s/'TAUY    '/'oceTAUY '/g
309      s/'SWFLUX  '/'oceQsw  '/g
310      s/DIFx/DFxE/g
311      s/DIFy/DFyE/g
312      and add few ocean-forcing diagnostics:
313      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
314    o modifications to pkg/seaice/growth.F and budget.F, which change results of
315      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
316      as actual snow thickness.  It now refers everywhere to effective snow
317      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
318    
319    checkpoint58r_post
320    o modifications to pkg/seaice/growth.F, which change results of
321      lab_sea experiment: fixes pertain to melting snow over open water, to
322      masking EVAP under sea ice, and to using the correct AREA variable for
323      computations of EVAP, PRECIP, HSNOW, and GHEFF
324    o add ability to read bathy, salt, and theta using MNC (off by def)
325    o add flooding algorithm and advection of HSNOW for pkg/seaice;
326      both are turned off by default and do no change any results
327    o seaice advection with pkg/thsice: a step toward the use of non-linear
328      advection scheme, but #ifdef or commented out for now (requires more EXCH).
329    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
330      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
331      in natl_box (affects results @ truncation level: update output.txt)
332    o multi-threading and IO:
333      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
334      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
335        (needed to work with SingleCpuIO): tested in all verif. exp.
336    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
337      affects the results (but none of the verification test uses this scheme).
338    o Adding some pkg/diagnostics capability to pkg/seaice
339      (will certainly be subject to changes)
340    o ctrl: adding new control variables:
341      lwflux, lwdown, evap, snowprecip, apressure, runoff
342    
343    checkpoint58q_post
344    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
345      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
346      high_res_cube configuration by 4% on Columbia.
347    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
348      add (in global_with_exf/code) a version of EXF_INTERP_READ without
349      dynamical allocation (seems to work in multi-threaded).
350    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
351      single CPU io) so that TAF does not have to see EESUPPORT.h
352    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
353    
354    checkpoint58p_post
355    o obcs: stop if obcs is used with useCDscheme = .true.
356    o shelfice:
357     - fix a sign error so that no slip at shelfice interface works
358     - remove stop for combination non-hydrostatic code and shelfice. That does
359       not mean, that the results are correct, but at least they are numerically
360       stable
361    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
362    o added adjoint exch routined for all exch*3d* routines
363      and updated flow directives
364    
365    checkpoint58o_post
366    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
367      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
368    o change controling S/R for writing pickup file (new S/R do_write_pickup)
369      and clean-up reading/writing of pickup files.
370    o fix local version of read/write pickup (NH part) in rotating_tank/code
371    o simplify EXCH interface:
372     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
373     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
374    o added the regrid package
375    o shelfice:
376     - add a simple boundary layer scheme to reduce noise
377     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
378    
379    checkpoint58n_post
380    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
381       local variable (not in common block).
382    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
383      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
384      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
385        to work with SingleCpuIO.
386    o add "_d 0" to real constant of pkg/cfc subroutines ;
387       update exp. cfc_exemple & tutorial_cfc_offline output files.
388    o multi-threading and IO:
389      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
390        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
391      - barrier before and after reading.
392      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
393      - avoid using MDS_WRITELOCAL for LAND pkg output.
394      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
395        common-block variables ; Allows multi-threading with master-thread IO.
396    o change default MAX_NO_THREADS from 32 to 4 ;
397      and stop cleanly when MAX_NO_THREADS is too small.
398    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
399    
400    checkpoint58m_post
401    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
402       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
403    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
404       keep global_ocean.90x40x15 (for AD testing) with former secondary test
405       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
406    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
407        add MITgcm_tutorials (= code + all the tutorials)
408    o ecco, option to compute cost for total ssh (mean+anom)
409    o consistent with addition of ptracer and ssh in pkg/profiles
410    o profiles: adding ptracer and ssh
411    o testreport: change multi-test output-file name
412      (from output.txt.{name} to output.{name}.txt)
413    o profiles: now ok for mutli-tiles case
414    o seaice: add 4 parameters for different advection schemes for area,
415      (effective) seaice thickness, enthalphy, and snow height. Their default
416      is the standard parameter SEAICEadvScheme
417    o calc_gw:
418     - add cosFacU in zonal viscous flux (harmonic.visc.).
419     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
420       of tutorial_plume_on_slope.
421    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
422    o calc_gw: true flux-form, account for horizontal grid spacing.
423      update rotating_tank results, but not plume_on_slope (affected at
424      truncation level, 11 digits).
425    
426    checkpoint58l_post
427    o calc_gw:
428     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
429     - remove side-drag for now (need to fix it); update plume_on_slope results.
430     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
431    o commit code to make SST/SSS weights spatially variable
432      (based on either variable in-situ or variable initial T/S weights)
433    o pkg/ecco:
434      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
435        now based on horizontally varying weights wthetaLev, wsaltLev
436      * cost_averagesflags now returns year indices in addition to day, month
437      * sflux balance is performed on annual basis
438        (sflxumm, sfluxmm2, bal_sfluxmm)
439      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
440        including separate counting and multipliers
441    o pkg/rbcs
442      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
443    
444    checkpoint58k_post
445    o testreport:
446     - always build in dir. "build" (if not there, mkdir build instead of building
447       & running in input)
448     - run in dir run (if it exists), in build otherwise.
449     - call prepare_run (if input/prepare_run exists)
450     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
451    o pkg/exf modifications to interpolation and rotation routines for more
452       reasonable treatment of North Pole singularity: for tracers North Pole
453       value is set to northernmost zonal-mean value, for zonal velocity it is
454       set to zero, and for meridional velocity it is set to northernmost value.
455    o pkg/exf/exf_check_range.F
456     - add tile index to diagnostics and move stop statement to the very
457       end of the routine.
458    o pkg/diagnostics: (diagnostics_main_init.F)
459      define title of isomorphic variables according to the current config.
460    o pkg/thsice with pkg/seaice dynamics:
461    - fix domain of computation (interior only, required for exf) and do exchanges
462    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
463    o towards a standard way of dealing with multi-threading in MONITOR
464      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
465    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
466       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
467    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
468    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
469    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
470       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
471    o tracer advection:
472     - clean-up and simplify calc_common_factors.F
473     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
474       advection subroutine (but still not used within DST advection S/R)
475    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
476    
477    checkpoint58j_post
478    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
479      from file (collects calls previously in FORWARD_STEP)
480    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
481    o adjoint store dir. adjusted accordingly
482    o genmake2
483      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
484    
485    checkpoint58i_post
486    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
487      on wind stress (SEAICEstressFactor defaults to 1.)
488    o Total number of Timers is finite (<=40): comment out 2 non-essential one
489      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
490    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
491      on CS-grid: no longer loosing mass.
492    o exf & curvilinear-grid: no longer modify longitude xC & xG.
493    o pkg/ggl90: fix sloppy output and fix a bug
494    o pkg/seaice: added SEAICEuseEVPpickup parameter
495      - Set to false in order to start EVP solver with
496        non-EVP pickup files when using SEAICEuseEVP
497      - fix sign error in diffusion in seaice_calc_rhs
498    
499    checkpoint58h_post
500    * Modifications for bottom topography control
501      o replace hFacC by _hFacC at various places
502      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
503      o add non-self-adjoint cg2d_nsa
504      o update autodiff support routines
505      o re-initialise hfac after ctrl_depth_ini
506      o works for 5x5 box, doesnt work for global_ocean.90x40x15
507    * Adding verification for 5x5 box (4-layer) bottom topography control
508    
509    checkpoint58g_post
510    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
511       used for mean seasonal cycle, mean diurnal cycle); add an example
512       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
513    o pkg/ggl90:
514      - add parameter (minimum surface kinetic energy)
515      - fix bug (avoiding division by zero)
516    o couple pkg/thsice to pkg/seaice:
517      - modify advection in seaice to accomodate new scalar fields to be advected
518      - only muliDimAdection scheme work with seaice/thsice
519      - mapping of thsice-variables to seaice-variables, back and forth
520      - does not break the verification experiments, but does not give the
521        desired results either
522    o pkg/seaice
523      - make (default) second order advection a bit less confusing?
524    
525    checkpoint58f_post
526    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
527      to pkg/seaice):
528      - new routines thsice_map_exf and thsice_get_exf provide the interface
529      - add an additional formal parameter to thsice_solve4temp
530    o pkg/exf:
531      - add new fields wspeed, snowprecip (to be able to couple to thsice)
532      - correct Stefan-Boltzmann constant
533      - new parameter for longwave surface emittance
534      - separate some stuff from exf_bulkformulae into new routines  
535        exf_radiation, exf_wind
536      - add new parameters and constants: longwave emissivity for ocean, ice
537        and snow, evaporation parameters over ice
538      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
539        either wind from stress or stress from wind
540    o pkg/thSIce:
541    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
542    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
543       and THSICE_CALC_THICKN
544    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
545    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
546      to make debugging easier.
547    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
548    o pkg/bulk_force:
549      - clean-up comments and parameters ;
550      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
551    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
552      generate new output for test-experiment: aim.5l_cs.thSI
553    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
554      testreport accordingly
555    
556    checkpoint58e_post
557    o SEAICE_CGRID adjoint done
558    o R_STAR adjoint implemented.
559      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
560      * need to sort out init. of h0facc, etc.
561    o Make pkg/profile fully independent of ecco,cost, etc. stuff
562      to be able to use it in pure forward.
563    
564    checkpoint58d_post
565    o upgrade simple test-experiment to tutorial example:
566     step.1: duplicate the experiment and (step.2) will remove the old copy.
567      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
568      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
569      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
570      tutorial_global_oce_biogeo    <- copy of dic_example
571      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
572      tutorial_plume_on_slope       <- copy of plume_on_slope
573      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
574      tutorial_global_oce_optim     <- empty for now (David ?)
575      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
576     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
577    o correct a sign problem in cost_scat.F
578    o obcs and ptracers: fix boundary conditions for advections schemes
579      with larger stencil
580    o thsice adjoint: start
581    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
582      completeness
583    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
584      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
585    o ptracers adjoint:
586      * avoid extensive recomputatations
587      * fix missing re-init. of gptr (missed by TAF)
588    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
589      me to turn off the excessive output to STDOUT that this package produces
590    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
591      and add those terms in Vector-Invariant formulation.
592    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
593      if the control period (xx_hfluxperiod etc) is 0
594    o in profiles pkg, clean routines and fix details
595    o in ecco pkg, reading ssh data:
596      fix problem in case the model does not start at iter0=0
597    o fix mnc-pickup/restart for ptracers
598    o new package prifiles:
599      code to compute profile-based cost by Gael Forget
600      (modifs in ecco, ctrl, autodiff)
601    o Benign bug fix in initialization (spotted by M. Mazloff) of
602      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
603    
604    checkpoint58c_post
605    o adjoint: finish NLFS adjoint and provide reference output in
606      verification/global_ocean.90x40x15/results_ad_nlfs
607    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
608      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
609      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
610      with SEAICE_CGRID defined.
611    o move calendarDumps from "data" to "data.cal" and clean-up the code
612      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
613    o add useEXF & useCAL flags (for now, set in hard-coded way)
614    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
615      (were missing in NH mode, and wrong in quasihydrostatic mode).
616      waiting for Chris updated version of calc_gw to add those CALLs.
617    o fix bug in quasihydrostatic S/R ;
618      add a test for this option: global_ocean.90x40x15.qshyd
619    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
620      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
621    o add on/off flag useOffLine for package OFFLINE
622    o seaice:
623      - modify advection so that it works also on the C-grid
624      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
625        problem in multi-tile runs with C-grid
626      - add flags for clipping ice velocities and/or masking solver forcing
627      - fix drag (ocean on ice) formulation and a bug that caused noise in the
628        C-grid solver
629      - added a few comments to seaice_diffusion.F
630      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
631        are now exclusive)
632      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
633        required re-ordering the code a little:
634       + make DAIRN global variable (defined in SEAICE)
635       + move computation of the viscosities eta and zeta into a new separate
636         routine (because I need to recompute them in seaice_ocean_stress.F)
637    
638    checkpoint58b_post
639    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
640      update output.txt of exp. aim.5l_cs.thSI
641    o various mnc cleanups and improvements:
642      + shrink lookup tables by factor of ~4
643      + better error reporting when running out of lookup space
644      + able to handle longer path/file names (up to 500 chars)
645    o adjoint:
646      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
647      - TBD: "hidden" mom_vecinv recomp. in dynamics
648    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
649     (allow to differentiate between forcing components using new integer flags:
650      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
651     and add new flag to put Dissipation tendency out of Adams-Bashforth.
652    o ecco
653      - enable trend removal from SSH anomaly obs.
654    o adjoint
655      - a fix for PmEpR when #undef EXACT_CONSERV
656      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
657      - try to fix "hidden" recomp. in forward_step for NLFS
658        (NLFS seems broken sometimes after I checked it in)
659    o seaice:
660     - add c-grid version of the dynamic solver:
661       + three new routines that are the c-grid substitute lsr, dynsolver
662         and ostres
663       + put a few fields that were local to dynsolver into global common
664         blocks, so that I can move the computation of stresses etc into
665         seaice_lsr (saves coding but may break the adjoint).
666     - replace more hardwired parameters by runtime parameters
667     - add ice masks that mask the rhs of the implicit solvers where there
668       is no ice (commented out in seaice_dynsolver, because i am not sure
669       if this works properly), eventually this should replace the clipping
670       of ice velocities in seaice_dynsolver to +/-40cm/s.
671    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
672      include it only where its needed
673    o move balancing of fluxes before the call of external_forcing_surf
674    o seaice:
675      - correct units of turning angles (now they are really in degrees)
676      - move computation of GWATX/Y out of main routine into dynsolver
677      - initialize GWATX/Y in seaice_init
678    o Apply mask on Fresh-Water flux (needed for SSH forcing).
679      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
680    o seaice: add runtime flags for turning angles (default to zero)
681    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
682      and trend from exf forcing and ctrl control adjustments
683    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
684      (since checkpoint57x_post)
685    o change the default rotation period to 86164.s = the Earth rotation
686    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
687      and based on a reference stratification. Tested within hs94.cs-32x32x5.
688    o seaice advection: add code for choosing between the default (2nd order
689      central differences) and multiDim advection schemes provided by
690      pkg/generic_advdiff
691    o seaice:
692      - removed all references to SEAICE_GRID.h fields from
693        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
694        (cubed-sphere configuration will change a little)
695      - grid computations in seaice_init are obsolete now.
696      - cleaned up code a little so that is easier to read (hopefully).
697      - added new (better?) discretizations of default advection and diffusion
698        (turn on with SEAICEuseFluxForm)
699      - replace 1 in 3d global fields by kSurface in growth.F
700      
701    checkpoint58a_post
702    o seaice:
703      - bug fix in advect.F
704    o shelfice:
705      - separate shelfice load anomaly from pload (breaks with time
706        dependent forcing), => introduce constant field shelficeLoadAnomaly.
707        Its default is 0., but it may be computed more cleverly from (unknown)
708        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
709        done offline. A good approximation of the pressure load anomaly is
710        necessary to avoid large initial adjustment processes underneath
711        deep-reaching shelfice.
712      - small fix in ISOMIP shelfice_thermodynamics
713      - add more sophisticated thermodynamics of Hellmer (1989), this is
714        now the default
715      - give a few constants more intuitive names
716    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
717      if bulk formulae are used in long integration (especially EmPmR). Turn
718      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
719      if balancePrintMean, the imbalance that is substracted is printed to
720      STDOUT.
721    o fix bug (typo) in obcs_apply_eta.F
722    o add a new package shelfice which enables us to model the circulation
723      underneath shelf-ice with draughts of hundreds of meters.
724     - works
725     - to do: + include improved thermodynamics
726              + check whether kSurfC (from model/inc/SURFACE.h) can be used
727                instead of new field kTopC
728              + can we use topoFile, Ro_surf and existing code in ini_depth.F
729                instead of new field R_shelfIce and new code in ini_depth.F
730                and ini_mask_etc.F?
731              + adjust vertical mixing schemes?
732    o seaice pkg:
733     - add a cpp-flag to include a simple formula for a salinity dependent
734       freezing point of sea water at the surface
735     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
736       meridional stresses are now different (and hopefully correct)
737    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
738       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
739       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
740    o pkg/diagnostics: add options and parameters for regional-statistics
741       diagnostics ; define regions by reading a region-mask from a file
742       (might add other options later)
743    o pkg/bulk_force:
744     - add option and parameters to use AIM surface-flux formulae.
745     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
746       others forcing fields (defined in PARM05, parameter file "data") are loaded
747       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
748     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
749     - use the right EXCH call for uwind,vwind (to work on CS-grid).
750     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
751       and parameters (note: calcWindStress replaces .NOT.readwindstress).
752     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
753    
754    checkpoint58
755    o add "--embed-source" option to genmake2 which, when the supporting
756      tools can be compiled (as determined by genmake2) will turn on the
757      embed_files package which then embeds the entire MITgcm source code
758      (*.[fFhc] + Makefile) used for the build within the executable
759      - requested by CNH but off by default
760      - adds a paltry <9MB to the mitgcmuv executable in most cases
761      - only writes the output when useEMBEDSRC in eedata is true
762    o clean up 3-dim. relaxation codes:
763      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
764      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
765      * Thanks to Tom Haine for testing!
766    
767    checkpoint57z_post
768    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
769      affects output (@ truncation level) of exp. plume_on_slope ; updated.
770    o fix the pickup behavior for obcs in combination with ptracers
771    o fix a bug in ptracers_external_fields_load
772    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
773      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
774    o transfered surface NH pressure to eta field (if exactConserv).
775    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
776         and update lab_sea output.txt file.
777    o completing 3-dim. relaxation code: additional term
778         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
779      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
780      * At compile time, in "EXF_OPTIONS.h" set
781          #define  ALLOW_CLIMTEMP_RELAXATION
782          #define  ALLOW_CLIMSALT_RELAXATION
783      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
784          tauThetaClimRelax3Dim = 15552000.0,
785          tauSaltClimRelax3Dim  = 15552000.0,
786      * 3 cases:
787          1) Use a constant-in-time 3-dim. field
788          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
789          3) Real-time relax. to time-evolving prescribed field
790    o Adding Laplacian-type smoothness constraint on
791      initial and boundary (forcing) controls (ic, bc)
792      * enable at compile-time via
793        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
794      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
795      * Absolute scale somewhat unclear so far
796      * no area weighting was included since no other cost term does so far
797    
798    checkpoint57y_post
799    First step for a NLFS adjoint
800    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
801    o new init. routines for calc_r_star, calc_surf_dr
802    o still need to deal with ini_masks_etc
803    o testreport seemed happy
804    checkpoint57y_pre
805    
806    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
807    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
808    o add new offset feature to offline pkg (plus minor cleanup)
809    o cfc fixes for final year of integration
810    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
811      be in GCHEM_OPTIONS).
812    
813    checkpoint57x_post
814    o fix testreport Pb in multiple test experiment.
815    o cleanup our namelist syntax in verification:
816      - make it more F95 standards compliant (some work still needed)
817      - allows the vast majority of our tests to work with gfortran
818    o Non-Hydrostatic:
819     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
820     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
821    o Allow to apply AB on T,S rather than on AB(gT,gS):
822     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
823     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
824       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
825     - need a "clever" read_pickup to restart from the other AB formulation
826    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
827    o remove some unused variables (reduces number of compiler warnings)
828    o adjoint
829      * Disable useVariableViscosity for adjoint for time being
830        (there are a number of extensive recomputations)
831      * Initialize certain variables needed for adjoint
832    
833    checkpoint57w_post
834    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
835                 fix the singleCpuIO RS version of MDSWRITEFIELD
836       and add a WARNING if using globalFiles=T with multi-processors.
837    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
838      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
839    o tracer advection scheme:
840      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
841       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
842       was not very convenient).
843      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
844       (further tests needed for the implicit DST & Flux-Limiter schemes).
845    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
846      and sRef for convenience, handy, when you want to initialize
847      ptracers in a large domain with a constant non-zero value. Also,
848      untangle ptracers_init.F a little.
849    
850    checkpoint57v_post
851    o change dome exp. to use variable viscosity in side-drag terms.
852    o remove all the files from the cfc_offline test since they are now
853      incorporated into tutorial_cfc_offline which has been producing
854      identical results for a few days of testing
855    o add new parameter: sideDragFactor to enable half-slip-side BC
856      and change side-drag S/R to use viscosity from mom_calc_visc
857      (can switch back by setting sideDragFactor=0.); affects results at
858      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
859       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
860    o vorticity & strain are now computed without masking, to account for
861      no-slip-side BC in variable viscosity calculation ; mask is applied
862      anyway later on, before computing advection/coriolis terms.
863    o modify exp4 to test new obcs support for reading from external files
864      and for passive tracers
865    o fix behavior of ptracers_monitor when monitor output is written to a
866      netcdf-file; still not independent of monitor.F (writes in the same
867      file).
868    o change default value of tRef (put a uniform, meaningful value for ocean
869      & atmos) and initialize sRef (was missing, as Martin mentioned).
870    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
871      to be proportional to enstrophy dissipation length.  Thus,
872       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
873      This is now consistent with Smagorinsky and with the manual.
874    
875    checkpoint57u_post
876    o OBCS and PTRACERS: add open boundary support for passive tracers
877      - either use homogenous (pseudo) v.Neumann conditions or prescribe
878        OB-values from file; this is not different from the way theta and salinity
879        are treated
880      - however, Orlanski-radiation conditions are not supported, and the model
881        will stop if you use pTracers and Orlanski at the same time.
882      - beefed up the rountine obcs_external_fields_load: now only those open
883        boundary values are overwritten with values from files for which there
884        are really files, otherwise the OB-fields remain untouched. This makes
885        it possible to use different OBs at different ends of the domain (as
886        with EXF)
887    o reduce number of exch calls in shap_filt (s2).
888    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
889      truncation level) 4/5 MLAdjust test results (11&12 digits match).
890    
891    checkpoint57t_post
892    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
893    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
894      same truncation, independent of the face number: affects affects several
895      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
896    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
897      note that biharmonic viscosity + no-slip was not tested in any experiment.
898    o fix bug in non-linear free-surf side-drag ; generate new output for
899      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
900    o make mnc honor the writeBinaryPrec flag for most kinds of output
901    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
902    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
903      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
904    o add brackets in multi-terms sum to get same truncation, independent of
905      the face number (manage to get exactly same value of gU,gV at the cs-edge)
906      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
907    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
908      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
909      a maximum grid-scale Reynolds number.  Also, changes all length calculations
910      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
911      Suggested values of viscosity parameters found in mom_calc_visc.
912      Many new viscosity diagnostics available.
913    
914    checkpoint57s_post
915    o Add clearing-house for viscosity calculations, mom_calc_visc and
916      correct numerous bugs in LeithD and Smagorinsky discretizations.  
917      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
918      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
919      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
920      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
921      The Strain-Tension form is now called with useStrainTensonVisc=.true.
922      ViscAhStrain and viscAhTension are now retired.
923    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
924    o In response to JMC's bug report, genmake2 now ignores any soft-links
925      that it finds in the *current* directory when searching for files.
926      Soft-links found in any other source directories will still work as
927      they did before.
928    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
929      a C routine to unlimit the stack size
930    o mnc-ify pkg/aim snapshot vars
931    o mnc-ify pkg/land as requested by Daniel
932    o various changes to mnc including:
933      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
934      - output can now be grouped so that all files within a group
935          change the ITER portion of their names in lock-step together
936      - can now read ("global") PER-FACE (in addition to PER-TILE) files
937          and works with both EXCH1 and EXCH2 (but needs more testing)
938      - writing works for all verification test cases w/ g77 on Linux
939    
940    checkpoint57r_post
941    o make MNC variable initialization happen earlier
942    o add diagnostics for (almost) each term of the momentum Eq.
943    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
944    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
945    o remove MINIMAL_TAVE_OUTPUT option ;
946      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
947    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
948      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
949    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
950    o add time-dependent SST, SSS control
951    o cost terms in ecco/ modularized (new cost_generic.F)
952    o cost_averages routines are modularized (new cost_averagesgeneric.F)
953    o new infrastructure for seaice model vs. obs misfits in seaice/
954      * driver from the_main_loop.F is seaice_cost_driver.F
955      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
956      * gradient check in Exp. 6a of natl_box_adjoint/
957    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
958      (see README file)
959    
960    checkpoint57q_post
961    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
962    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
963      - bug was reported by Jean-Michel and Ian Fenty
964    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
965      update exp. cpl_aim+ocn output.
966    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
967      Needed for high-res. runs with large global files
968      to be able to limit tapelev size
969    o Changed some tests for adjoint:
970      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
971      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
972      * global_ocean.90x40x15/ back to default 3-level checkpointing
973    o Modifications to enable scripted COMMON to MODULE conversion
974      * verification/OpenAD/code/ has necessary scripts and description;
975      * converts, compiles and runs successfully;
976    
977    checkpoint57p_post
978    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
979    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
980      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
981    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
982    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
983      (was already the case for dissipation with mom_vecinv,
984       and also the case for grad.PhiHyd when staggered-timeStep)
985      This will allow to put dissipation out-off the AB time-stepping.
986     Unfortunately, affects truncation error. Update output of exp. that "fails"
987      (cg2d matching number) and leave the others for later: front_relax(10),
988      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
989      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
990    
991    checkpoint57o_post
992    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
993      (2) its ready to be documented during the 20050801 DocFest
994    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
995      for ideal_2D_oce and lab_sea on linux_ia32_g77
996    o set to #undef CTRL_SET_OLD_MAXCVARS_30
997      in global1x1_tot/code_seaice_adj to access indices 32, 33
998      (worth another tag)
999    
1000    checkpoint57n_post
1001    o adding precip control xx_precip 32
1002    o adding swflux control xx_swflux 33
1003    o Replacing 10 forcing penalty cost routines by 1 generic.
1004    o Implementing partitioning in time-mean and variable adjustment
1005      for atmos. state.
1006    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1007    o in natl_box_adjoint:
1008      * updated exp 1 to 10
1009        (but does not have time-mean vs. variable split results yet)
1010    o updated global1x1/*_seaice_adj/
1011      to incorporate latest changes
1012    o enable useSingleCpuIO for mdsio vector routines
1013      (applies in particular to tapelev I/O)
1014    o removed inefficient K-loop in all active_file*control*.F
1015    
1016    checkpoint57m_post
1017    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1018      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1019    o pkg/exch2: filling of face-corner halo regions is optional
1020      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1021    
1022    checkpoint57l_post
1023     tag before updating tutorials (pre-release-2)
1024    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1025       for output and interpolation of input fields onto model grid)
1026    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1027       Affects results of exp. rotating_tank ; update output.txt.
1028    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1029          and taking the square quantity and/or using a fraction-weight field.
1030    o fix aim_diagnostics_init.F mate numbers.
1031    o add mnc output capability to diagnostics/diagstat and update
1032      our cvsignore files for the ACSII output generated
1033    
1034    checkpoint57k_post
1035    o lab_sea now uses diagnostics package and provides a suite of
1036      new EXF diagnostics output.
1037    
1038    checkpoint57j_post
1039    o exf
1040      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1041        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1042        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1043      * extended diagnostics output
1044        - now includes all EXF variables
1045        - hs, hl moved to common block
1046        - separate S/R for diagnostics, called after ctrl vector is added
1047        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1048        - EXFqnet contains true Qnet (i.e. includes qsw)
1049      * updated verif. lab_sea, global_with_exf
1050      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1051        to ensure that diagnostics sees a true EXFqnet
1052    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1053    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1054      several times with different frequencies.
1055    o mnc-ify the thsice package as requested by Daniel Enderton
1056      - the monitor--MNC output needs work
1057      - many attributes need to be added (most are currently blank)
1058    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1059      - many attributes need to be added (most are currently blank)
1060    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1061    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1062    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1063      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1064         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1065    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1066     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1067    
1068    checkpoint57i_post
1069    o Diagnostics package was changed: diagnostic allocation is now deactivated
1070      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1071    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1072      add 1rst Order upwind vertical Shear.
1073    o add a quick fix for A/B checkpointing in OFFLINE mode
1074    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1075      end-run around the C/Fortran linking horror in eesup/src/timers.F
1076    o added pkg/runclock: allows user to terminate run based on wall clock
1077    o added non-hydrostatic scaling parameter: nh_am2
1078    o pkg/my82: futile attempt to make results compiler-independent by adding
1079      some "_d 0", etc. no effect.
1080    o for mnc output, fill the 'T' coordinate var with myTime and create a
1081      separate 'iter' variable for iteration count
1082    o pkg/diagnostics:
1083      add new capability: output of Global/Regional & per-level statistics ;
1084      tested against monitor output (including land & thSIce) on various exp.
1085    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1086    
1087    checkpoint57h_done
1088      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1089      data.diagnostics, data.gchem, data.ptracers) is done.
1090    
1091    o pkg/diagnostics: prepare for Global/Regional statistics.
1092      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1093    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1094      and rename it: DIFFERENT_MULTIPLE
1095    
1096    checkpoint57h_post
1097    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1098    o pkg/diagnostics: change output frequency, now in seconds (instead
1099      of Nb of iterations). This requires to change data.diagnostics.
1100    checkpoint57h_pre
1101    
1102    o in mnc, let the user create the output dir if both mnc_outdir_date
1103      and mnc_outdir_num are false
1104    o add fflags() to pkg/diagnostics which allows one to specify, on a
1105      per-file basis, the file precision [default behavior is unchanged]
1106    o added diagnostics to pkg/kpp, including computation of mixed layer
1107      depth based on a temperature/density criterion
1108    o updated verification/natl_box to test the new pkg/kpp diagnostics
1109    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1110    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1111    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1112      not mnc -- this mistake was found by JMC and is now corrected
1113    
1114    checkpoint57g_post
1115    o add Adams-Bashforth 3rd Order time stepping:
1116      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1117      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1118    checkpoint57g_pre
1119    
1120    o make lambda[Theta,Salt]ClimRelax spatially varying
1121      (default remains spatially uniform constant based on tau)
1122    o added new control variables
1123      * init. uVel, vVel, etanN
1124      * lambda[Theta,Salt]ClimRelax
1125    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1126      (suggested by G. Forget)
1127    
1128    checkpoint57f_post
1129    o add parameter "baseTime" = model base time = time at iteration zero
1130      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1131      account for baseTime shift
1132    o move Coriolis arrays from PARAMS.h to GRID.h
1133    checkpoint57f_pre
1134    
1135    o mnc-ifying the seaice package
1136    o introduced an alternative length scale calculation for use in the limiting
1137      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1138    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1139    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1140      as well as grad(vort3).  Made it compatible with both approximate form
1141      for the cubed sphere and full form of these gradients.  Added flag
1142      useFullLeith to select between approximate and full form.  
1143    o add "d0" in getcon.F to reduce differences between compilers/platforms
1144      update output.txt of exp. fizhi-gridalt-hs
1145    o change port_rand funtion to allow to set the seed.
1146    o fix obscure MNC bug involving conversion between reals and integers
1147      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1148        new version is now more standards-compliant
1149    o adjoint-related modifications
1150      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1151      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1152      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1153    
1154    checkpoint57e_post
1155    o Adding eddy stress controls a la Ferreira et al.
1156    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1157    
1158    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1159      update output.txt of exp. fizhi-gridalt-hs
1160    o add more "Z" dimensions and associated coordinate vars to MNC
1161    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1162    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1163      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1164      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1165      months and years.  Requires pkg/cal.
1166    o diagnostics: add pickup functionality
1167      - off by default for backwards compatibility
1168      - current version only uses MDSIO -- MNC will be added
1169    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1170    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1171    
1172    checkpoint57d_post
1173    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1174    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1175      output from the diagnostics package
1176    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1177    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1178      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1179    o add coordinate variables to the MNC output from the diagnostics package
1180    o change MNC-flags default value: true when useMNC=TRUE
1181    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1182      the ability (off by default) to read the grid information using MNC
1183    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1184    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1185    o do snap-shot diagnostics at the middle of the time-interval (instead of
1186      at the end).
1187    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1188      new test for AIM with thSIce + slab-ocean
1189    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1190    o move state variable diagnostics to the beginning of the time step ;
1191      (note: still needs some work specially for snap-shot diagnostics)
1192      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1193    
1194    checkpoint57c_post
1195    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1196    o generate new output.txt files on faulks with g77 & the new -ieee option
1197    checkpoint57c_pre
1198    
1199    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1200      update output.txt of exp. global_ocean.90x40x15
1201    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1202      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1203    o add saltFlux(+File) forcing capability with periodicExternalForcing
1204    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1205    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1206    o improvements for the MNC output from DIAGNOSTICS:
1207      - correct handling of the unlimitied dimension
1208      - all dims now have associated coordinate variables
1209      - variables located at U, V, and Corner ("Z") points are now written
1210        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1211        *all* data points are output
1212    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1213    o added pkg/seaice/seaice_monitor.F
1214    o mdsio_readfield.F can now read files visible only to master MPI process.
1215    o pkg/seaice: some test code for ice-modified ocean stress
1216    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1217      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1218      spurious negative numbers for precipitation and humidity.  Will cause
1219      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1220    o pkg/ctrl/
1221      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1222        May be enabled via doPackDiag
1223      *  introduce z-scaling of
1224         + gradient (doZscalePack) and
1225         + control (doZscaleUnpack)
1226    o pkg/mdsio/
1227      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1228      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1229    
1230    checkpoint57b_post
1231    o simplify options in diagnostics_fill arguments (remove weird combinations)
1232    o fix MNC coordinate variables so that they now contain per-face index
1233      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1234      general, EXCH2 grids are only aligned to a "local" coordinate system
1235    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1236    o Implement instantaneous output within pkg diagnostics:
1237      setting a negative frequency in data.diagnostics produces
1238     "snap-shot" output (as opposed to time-average if freq > 0)
1239    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1240      NOTE: change ptracer diagnostics name: use 2 characters to work with
1241            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1242    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1243      becomes the coordinate variable for the 'T' dimension
1244    o add CF-style coordinate variables to MNC
1245      - just a first cut:  numbers are meaningless on the cubesphere and
1246        missing along the T axis but otherwise it works!
1247    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1248    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1249    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1250      this is based directly on what the model compute, so that the content of
1251      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1252    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1253    o clean up build options files for SunOS, in particular
1254      - remove -traditional from xmakedepend
1255      - change -xarch=v9 to -xarch=native for f77
1256      - restore use of make (not gmake)
1257      - add CC=gcc if using g77
1258    o changes per discussion of AM, JMC, & EH3 today:
1259      - move redundant "grid" variables out of "state" -- in preparation of
1260        creating proper CF-style coordinate variables and in recognition
1261        that any/all grid variables can be easily copied (eg. w/NCO) from
1262        the grid files into any of the other NetCDF files
1263      - *always* output grid variables with MDSIO (this will eventually be
1264        changed)
1265      - output MNC grid file if useMNC is true
1266    o every instance of _END_MASTER() has been found and replaced with
1267      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1268      preprocessors
1269    o re-arrange diagnostics pkg initialisation:
1270     - allow each package to extend the available diagnostics list
1271     - add some checking and fix small problems (multi-threaded, ...)
1272     - new S/R diagnostics_fill (replace fill_diagnostics):
1273       look through the short list of active diag. (instead of the long list)
1274       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1275    
1276    checkpoint57a_post
1277    o this set of changes restores TAMC compatibility
1278      tested for global_ocean.90x40x15 adjoint on trough
1279      (what a pain)
1280    
1281    checkpoint57a_pre
1282    o some modifs in tools/build_options for sunos
1283    o call ctrl_pack for ctrl at end for optimcycle=0
1284    
1285    checkpoint57
1286    o add horizontal bi-harmonic viscosity for vertical velocity
1287      - new parameter viscA4W (defaults to viscA4)
1288      - affects only non-hydrostatic code
1289      - to be done: no-slip lateral boundary conditions
1290    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1291    o implement Implicit Vertical advection for pTracers
1292    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1293      (implemented also for implicit vertical diffusion & advection)
1294    o OBCS: extend application of tracer open boundary conditions
1295      to a strip beyond the boundary of width Olx/Oly
1296    o add call monitor to TAF set of required calls (flow directives)
1297      and include in natl_box_adjoint
1298    o untangle a few ifdefs related to cost, ctrl, autodiff
1299      untangel a few ALLOW_ECCO_OPTIMIZATION
1300    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1301      (theta2, salt2 in ecco_cost_weights)
1302    
1303    checkpoint56c_post
1304    o OBCS as control variables
1305      - update ctrl_ad_diff.list, obcs_ad_diff.list
1306      - remove balance of obcs controls from default
1307      - fix index bug nobcs in ctrl_init
1308      - fix dummy fields filen in ctrl_pack
1309      - add dummy weights for obcs
1310    o lsopt: comment out fort.94 output
1311    o optim:
1312      - remove unnecessary header files
1313      - adjusted namelists
1314      - add xerbla.F to Makefile
1315    o exf:
1316      - multiple modifications of exf_check_range
1317      - unit change in exf_init_runoff from [m/year] to [m/s]
1318    o mdsio:
1319      - i/o-vector change debugLevel from debLevA to debLevB
1320    
1321    checkpoint56b_post
1322    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1323      is called from DO_THE_MODEL_IO
1324      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1325      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1326      - clean up PTRACERS_WRITE_TIMEAVE a little
1327    o add another verification experiment that tests both the cfc-pkg and
1328      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1329      reactive tendencies treated inline with regular timestepping
1330    o testreport previously did a lousy job of comparing small numbers, so
1331      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1332      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1333      testreport.
1334    o ptracers_monitor: bug fix for MPI
1335    
1336    checkpoint56a_post
1337    o GCHEM: finish reorganizating the package
1338      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1339        (introduces another 3D-array for each passive tracer, but only if
1340        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1341        gchemTendency is not needed because the timestep is done separately)
1342      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1343      - GCHEM is now---more or less cleanly---separate from PTRACERS
1344      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1345        so clear to me how that should be done in a general way.
1346    o CFC: improve formatting of output in CFC_ATMOS
1347    o PTRACERS:
1348      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1349        that ALL experiments with ptracers enable can be checked. This makes
1350        GCHEM_MONITOR obsolete.
1351      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1352        monitorFreq
1353      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1354    o add PTRACERS (PTR0[1-5]) to testreport output
1355    o exf_check_range:
1356      * default changed to .TRUE.
1357      * will check values for niter0 if debLevA, every timestep if debLevB
1358      * STOP in exf_check_range if 'out of range'
1359      * range chosen generous to allow for potential extema
1360      TBD: a version with stricter range
1361           permitted range would be runtime parameters
1362    o GMredi:
1363      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1364      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1365      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1366    o GCHEM:
1367      - move call to GCHEM_FORCING_SEP, so that it is now called before
1368        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1369      - introduced a useGCHEM runtime flag and applied it everywhere.
1370      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1371        this flag is now only visible within GCHEM-pkg routines.
1372      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1373        be replaced by a 3D array that is computed before thermodynamics; for
1374        this, the tracer ID iTracer had to be included into the parameter list
1375        of ptracers_forcing
1376      - set up forward_step to call gchem_forcing, that will replace
1377        gchem_forcing_int in ptracers_forcing
1378      - cleaning up
1379    o small cleaning of exch2: remove files that are also in eesupp/src
1380    
1381    checkpoint56
1382    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1383    o mnc: cleanup "full" files--fixes out-of-memory problem
1384    o ECCO-GODAE
1385      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1386      * fully merged and updated from SIO code
1387        windstress sign change affects
1388        - exf_inscal_[u/v]stress
1389        - sign of xx_tau[u/v] adjustments
1390        - signs in cost_scat
1391      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1392      * natl_box_adjoint updated and compressed
1393      * 2-level checkpoint switch added
1394        (tested in EXP. 1 of natl_box_adjoint)
1395      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1396    o SVD
1397      * first complete, non-hacked version for SVD calculations
1398      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1399        performed via direct access files admtlm_vector.it????
1400        (via ctrl_[un]pack)
1401      * optimcycle is used for ARPACK iteration counter
1402        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1403      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1404        and add linear transforms where necessary
1405      * controls are initial/final SST, SSS (can be extended; need to check
1406        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1407    o mdsio: filename info to both stderr, stdout
1408    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1409      from sign change
1410    
1411    checkpoint55j_post
1412    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1413      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1414    o add consistent build directories and .cvsignore files to verification
1415    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1416    o make all subroutines 30 or less characters in length for certain older
1417      compilers to work (a thorough search only turns up two routines in
1418      pkg/ptracers)
1419    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1420      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1421    
1422    checkpoint55i_post
1423    o change arrays for total vertical diffusivity (2.D if explicit,
1424      3.D if implicit) ; each ptracer uses its own background value.
1425    o added mnc/NetCDF output capability to ocn_compon_interf
1426      - added bits to verification/cpl_aim+ocn so that it can run on
1427        ITRDA and other clusters without the mpirun "-wd" option
1428    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1429      configuration
1430    o give MNC the ability to create additional files rather than
1431      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1432      - the default is just less than 2GB which is a practical limit
1433        on many systems
1434    o Compute the non-local term using either KPP vertical diffusivity (=default)
1435       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1436    
1437    checkpoint55h_post
1438    o add verification test "vermix"
1439    o remove all the *_ioinc flags and replace with the single global
1440      outputTypesInclusive flag
1441    o allow to set a vertical profile of vertical diffusivity for T & S
1442    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1443    o useMNC moved from data.mnc to data.pkg
1444    
1445    checkpoint55g_post
1446    o Renaming carbon AD experiments to comply with testreport conventions
1447    o Updating adjoint of Held-Suarez hs94.1x64x5
1448    o Fixing directives for non-ECCO forward_step, after ECCO directives
1449      have been fixed to avoid recomp. of do_oceanic_phys
1450      Works well for global_ocean.90x40x15,
1451      but recomp. issue remains for carbon
1452    o Updating adjoint output for natl_box_adjoint after
1453      pkg/ecco has been modified (see taga c55d_post)
1454    
1455    checkpoint55f_post
1456    o rename to timeave_init_fixed
1457    
1458    checkpoint55e_post
1459    o some delicate re-shuffle of store directives to avoid one
1460      extra call of do_oceanic_physics
1461      affects ecco_the_main_loop.F, do_oceanic_physics.F
1462      checkpoint_lev1_directives.h
1463    o NB: this may break global_ocean adjoint temporarily,
1464      but it is clear how to fix it. Will do later, need this now.
1465    
1466    checkpoint55d_post
1467    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1468    o ecco_cost_weights is modified to 1x1 runs
1469    o modifs to allow observations to be read in as
1470      single file or yearly files
1471    o enable to read exf forcing fields as either
1472      single file or yearly files (flag useExfYearlyFields)
1473    checkpoint55d_pre
1474    
1475    o switch between 2-level and 3-level checkpointing
1476    o add ability of MNC to write local and "partial" (eg. 2D slices where
1477      the full 3D field is never actually stored) arrays to NetCDF files
1478      with the correct (that is, the complete multi-dimensional) set of
1479      array indicies
1480      - used in mom_vecinv() to write the diagFreq output
1481      - tested (demonstrated) in verification/aim.5l_cs
1482    o further mnc-ification
1483      - add verification/lab_sea to the list with mnc setups
1484      - fix undefined mnc v-names in cd_code
1485      - add kpp to mnc output (both snapshot and timeave)
1486    o non-hydrostatic code
1487      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1488        in calc_gw.F
1489      - defaults to viscAh
1490      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1491        friction or Leith) in non-hydrostatic mode, as long as there is
1492        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1493    o pkg/cost
1494      extend simple cost functions to treat time mean quantities
1495      (T,U,V) via cost_accumulate_state from cost_tile
1496    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1497        be 2 times larger than the minimum size the advection scheme requires.
1498        now get a perfect conservation of salt in advect_cs test-exp (updated)
1499    o GGL90 (Gaspar's TKE mixed layer)
1500      - add horizontal diffusion of TKE, requires exchanges in
1501        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1502        default. In OPA there is no horizontal diffusion of TKE but the
1503        mixing coefficients are computed from a horizontal average of TKE of
1504        6 points or so. I think that diffusion has a little more physical
1505        justification.
1506      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1507        was in vain)
1508      - mask tke-variable in ggl90_init
1509    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1510    o fix biharmonic diffusion on CS-grid.
1511    o more obcs stuff
1512      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1513        for reading boundary values. This routine is called from
1514        obcs_prescribe_read
1515      - updated obcs_check
1516      - changed sponge layer relaxation parameter units for days to seconds
1517      - turned off sponge layer by default
1518      - changed argument list of OBCS_CALC to myTime+deltaTclock
1519      - fixed about 35 bugs in obcs_external_fields_load
1520    
1521    checkpoint55c_post
1522    o obcs stuff
1523      - new runtime flags useOBCSprescribe, useOBCSbalance
1524      - re-arranged obcs_calc
1525      - moved exf_getobcs to obcs_prescibe_read
1526        obcs_prescibe_read is called after ORLANSKI stuff
1527        and independent of it (executable can contain all).
1528      - updated obcs_check
1529      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1530        These may be necessary only if tangential velocities are
1531        prescribed at OB, not sure, needs testing.
1532    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1533      which simplifies the calls and passes the ifc check-bounds test
1534    
1535    checkpoint55b_post
1536    o add a 2D scalar, Z location, exchange_2 routine.
1537    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1538      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1539      affects advect_cs results (for the wrong reason): update output.txt
1540    o use a more standard discretization for biharmonic viscosity ;
1541     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1542      affects results of dome set-up: update output.txt
1543    o fix gad_advection.F (CubedSphere part), back to version 1.23
1544    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1545    
1546    checkpoint55a_post
1547    o merged code to
1548      * prescribe/read time-dependent open boundaries
1549        (works in conjunction with exf, cal)
1550      * sponge layer code for open boundaries
1551      * each boundary N/S/E/W now has its own CPP option
1552        (healthy for the adjoint)
1553    
1554    checkpoint55
1555    o up-to-date adjoint of previous breaks
1556      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1557      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1558      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1559      - carbon: * remove tr1-related adjoint verification
1560                * add ptracer as control variable
1561    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1562      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1563    
1564    checkpoint54f_post
1565    o in verification/carbin/ remove experiment related to
1566      ALLOW_PASSIVE_TRACER (array tr1 etc)
1567      code_ad/ input_ad/ results_ad
1568    
1569    o add two new packages
1570      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1571        + subject to optimization (memory)
1572      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1573        + subject to reordering (many GOTOs in the original code)
1574        + so far opps is called for every (i,j) point, and then operates in
1575          the vertical; one may want to reorder the scheme in order operate in
1576          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1577          fields)
1578    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1579      - all verification tests compile and run with linux_ia32_g77
1580      - defaults are compatible with current input files--nothing
1581        should change if you were not previously using MNC
1582      - MNC output has been added in numerous places (eg. timeave)
1583        but there are still a few writes not yet do-able with MNC
1584        (this is in progress)
1585      - flags now allow for either/or/both use of MDSIO and MNC and
1586        documentation will soon follow
1587      - numerous small formatting cleanups for ProTeX
1588    o add version info (via BUILD_INFO.h) to MNC and stdout
1589    
1590    checkpoint54e_post
1591    o add two new packages
1592      - pp81 (Packanowski and Philander, 1981), Richardson number and
1593        stratification dependent mixing
1594      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1595      - these scheme operate in a similar manner as KPP (without ghat, of
1596        course), however there is only one diffusivity that is used for both
1597        temperature and salinity (and passive tracers)ç
1598    o add offline package
1599    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1600      provided by Stephanie Dutkiewicz
1601    o genmake2: add ability to search for C compilers and cleanup test output
1602      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1603    
1604    checkpoint54d_post
1605    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1606    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1607      leading to additional shift by 5 days each year of integration
1608       (i.e. leading to considerable offset over the years)
1609    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1610    o start with no AB and no initial filtering (staggerTimeStep):
1611      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1612    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1613      (external loading & cpl import/export stay in forward_step.F)
1614    o update coupling interface to work with new staggerTimeStep
1615    o change MDSIO ptracers_pickup.
1616    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1617    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1618    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1619    
1620    checkpoint54c_post
1621    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1622      this affects (truncation error) output.txt of test-exp:
1623       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1624    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1625    o change Qnet to always be the net heat flux, (+upward).
1626      affects (truncation error) output of natl_box exp.: updated
1627    o define the max number of passive tracers in PTRACERS_SIZE.h
1628    o start to test mnc routinely in exp0
1629    o add sea-ice loading (sIceLoad) as a new forcing field.
1630    
1631    checkpoint54b_post
1632    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1633       impressive on Altix and Opteron systems)
1634    o diagnostics can now write NetCDF files through the mnc package
1635    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1636    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1637    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1638      affects (truncation error) output of lab_sea & natl_box exp.: updated
1639    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1640    
1641    checkpoint54a_post
1642    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1643    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1644    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1645    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1646      + internal_wave (shift in writing cg2d_ini_res)
1647    checkpoint54a_pre
1648    
1649    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1650      - modified verification/lab_sea and natl_box_adjoint accordingly
1651    
1652    checkpoint54
1653    checkpoint53g_post
1654    o prepare splitting of thermodynamics: store convect.counter in common block
1655    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1656      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1657    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1658    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1659    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1660    o restore adjointability
1661    
1662    checkpoint53f_post
1663    o modifications that affect AIM experiment results (update output.txt):
1664      - no advection of S at top interface Nr (pkg/generic_advdiff)
1665      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1666    o AIM pkg:
1667      - include stability function into surf.Flux derivative relative to Tsurf
1668      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1669    
1670    checkpoint53e_post
1671    o merged cylindrical coord configuration
1672    o added rotating_tank experiment
1673    checkpoint53e_pre
1674    
1675    checkpoint53d_post
1676    o faulks upgraded: re-generate output.txt that have changed:
1677       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1678    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1679    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1680    o added Sadourny discretization of Coriolis
1681      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1682      - re-enabled use of omega3 (useAbsVorticity)
1683    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1684      vector-invariant equations
1685      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1686    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1687      hopefully without new bugs
1688      - still to do: biharmonic friction for non-hydrostatic w
1689    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1690    o regenerated output for global_ocean_ebm (using -ieee)
1691    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1692      of mom_common/
1693      - simple re-arrangement of instructions within computing loop
1694    checkpoint53d_pre
1695    
1696    checkpoint53c_post
1697    o new version of coupler for AIM+thSIce and Ocean models
1698     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1699     - land: change Evaporation of snow
1700     - aim with thSIce: fix bug in snow-precip.
1701    o changes to calc_gw.F
1702     - bug fix for w^2 term near the bottom boundary
1703     - (hopefully) improve the lateral slip boundary condtions for use with
1704        partial/looped cells
1705      - because the bug fix changes two verification experiments anyway (exp5
1706        and plume on slope), change the lateral boundary condition from half slip
1707        to the value of no_slip_sides
1708    o ebm package wasnt quite up to the parallel task. Fixed that.
1709    o Adjoint of EBM package + verification
1710      * TLM OK
1711      * ADM not sufficient accuracy yet (needs further testing)
1712    
1713    checkpoint53b_post
1714    o Commiting new energy balance model to repository
1715      * package is pkg/ebm
1716      * verif. is verification/global_ocean_ebm
1717      * references are in ebm_driver.F
1718    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1719    C        Global thermohaline circulation. Part I:
1720    C        Sensitivity to atmospheric moisture transport.
1721    C        J. Climate 12(1), 71-82
1722    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1723    C        Global thermohaline circulation. Part II:
1724    C        Sensitivity with interactive transport.
1725    C        J. Climate 12(1), 83-91
1726    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1727    C        Destabilization of the thermohaline circulation
1728    C        by atmospheric eddy transports.
1729    C        J. Climate 7(12), 1870-1882
1730    o Will need long integration testing.
1731    checkpoint53b_pre
1732    
1733    o created pkg/mom_common in preparation for variable viscosity code
1734    o renamed and split ini_mnc_io
1735    o pkg/land: only liquid water can diffuse or run-off
1736    o AIM using land: soil wetness availability account for snow
1737    o added printMapIncludesZeros to EEPARMS namelist
1738    
1739    checkpoint53a_post
1740    o restore TAMC compatiility for exf_constants.h
1741      (no usage of _d in .h)
1742    o Additional storing in KPP in an attempt to fix
1743      TAMC problem with adjoint of KPP code.
1744      (no success...)
1745      Identical code works fine with TAF.
1746    o Fixed verification/natl_box_adjoint experiments.
1747      Initial conditions for Experiments 4 and 5 are now
1748      set to "SEAICE_initialHEFF=0", which is more reasonable,
1749      and hence gives results closer to that of Experiment 2.
1750      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1751    
1752    checkpoint53
1753    o stable checkpoint with up to date adjoint
1754      TLM tests only run for 1st grdchk at the moment. Its unclear if
1755      this is a code problem or a problem with resetting code for g_
1756      variables that is being autogenerated wrong.
1757      Otherwise:
1758       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1759       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1760         are both still in chaos following their security messes.
1761    
1762    checkpoint52n_post
1763    o various build (mostly genmake2) changes including:
1764      - ability to build/run more easily within Cygwin and MacOS X
1765      - more complicated Makefiles with a stronger dependence on Gnu Make
1766    o pkg/seaice modifications
1767      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1768        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1769        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1770      - changed proxy for geostrophic velocity and updated
1771        verification/lab_sea/results/* accordingly
1772      - removed ADI dynamic solver from pkg/seaice
1773      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1774        they caused a segmentation fault under certain circumstances
1775      - removed unused field WATR
1776    o bug fix in exf-package:
1777      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1778         now reflect that.
1779    o small fixes in the cal-package:
1780      - set reference date to first of January for the 'model'-calendar
1781      - failing of cal_CheckDate in cal_FullDate now actually results in a
1782        warning
1783    o small modifications in exf-package to increase flexibility:
1784      - change climtempfreeze from a constant to a runtime parameter that
1785        is specified in data.exf_clim (default = -1.9)
1786      - introduce runtime parameter windstressmax (default = 2.0) that is
1787        specified in data.exf
1788    o fix in pkg/thsice:
1789      - update Evap (Tsf changes) to be consistent with Latent heat flux
1790      - maintain snow precipitation unchanged (even if Tsf >=0).
1791     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1792    
1793    checkpoint52m_post
1794    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1795      this does not change any of the results, because myIter=0 in swfrac always
1796      lead to jwtype=2 (the default anyway), but the call makes little sense
1797      as a default
1798    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1799    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1800      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1801    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1802    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1803    o extending useSingleCpuIO option to work with new exch2 I/O format
1804      - old-style, missing-tile I/O is still accessible by defining CPP
1805        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1806    o monitor package can write to NetCDF files and/or STDOUT
1807    o fix re-definition bug in MNC_GRID_INIT_ALL()
1808    o doc/api_reference added
1809      - a framework for building an API Reference Manual using all
1810        the "protex" comments embedded in the code
1811      - see pkg/generic_advdiff, pkg/mnc for examples
1812    o MNC:
1813      - make myThid the last argument for all subroutines
1814      - new default for the grid files: NO halos
1815      - add useMNC and other run-time flags
1816      - separate per-file-group handling of the unlimited dimension
1817      - early initialization of MNC w/ flags read at the eeboot stage
1818        and lookup tables set in initialize_fixed
1819      - write all MNC output to a freshly-created directory
1820    o thermodynamics sea-ice (thsice) is now tested with testreport.
1821    o test exp. advect_cs: use the standard cs32 grid ; update output.
1822    o Added functionality to grdchk:
1823      pick global i,j,k position (or nearest wet) where to perform check.
1824    
1825    checkpoint52l_post
1826    o new land formulation:
1827      a) use ground enthalpy as prognostic variable to ensure exact
1828         energy conservation.
1829      b) account for water temperature and for latent heat of freezing
1830         in all processes (rain, run-off, ground storage)
1831      c) compute surface and ground temperature implicitly.
1832    o aim_v23 modification for new land model:
1833      a) Treat separately land / ocean / sea-ice surface fluxes
1834         to allow implicit computation of land & sea-ice surface temp.
1835      b) add snow precipitation.
1836    checkpoint52l_pre
1837    
1838    o fix problem (when 1 tile is empty) in min/max monitor.
1839    o fix bug in timeAve (u,vZetatave in common block)
1840    o no restoring terms under ice for pkg/seaice
1841    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1842    o bug fix for pkg/seaice pickups
1843    o change MNC call locations and add coordinate attributes
1844    o mask vorticity at the corner ; affects global_ocean.cs output
1845    o fix ini_curvilinear_grid ; test CS experiments with mpi
1846    o aim.5l_cs: modify sea-ice fraction input file ; update output
1847    o exf: Adding simple range check routine for exf fields after read
1848    
1849    checkpoint52k_post
1850    o removed top-level directory "diags"
1851      - we migrated these functions to pkg/timeave a long time ago
1852    o fixed bug introduced in pkg/monitor
1853    o accuracy ctrlprec = 32 insuffient for gradient checks using
1854      averaged fields (I/O via cost_averages)
1855      -> use ctrl.h in active_file*.F to control I/O precision.
1856    o paramter list of CALL ADTHE_MAIN_LOOP
1857    o added initial do_the_model_io to ecco
1858    o set all ...Freq to zero after cost_final
1859      taveFreq, dumpFreq, pChkptFreq
1860    o MAIN and ECCO differentiability restored
1861    
1862    checkpoint52j_post
1863    o fix nchklev in tamc.h for global_ocean...
1864    o Bringing flow and store directives up-to-date
1865    o Really weird thing!
1866      call do_the_model_io from the_main_loop with parameters
1867      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1868      TAF places a faulty re-call of initialise_varia
1869      after cost_final call which should not be there!
1870    checkpoint52j_pre
1871    
1872    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1873      error messages
1874    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1875    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1876      debug output
1877    o modfied mdsio_writefield.F to handle non-global files under exch2
1878    o update AIM Cubed-Sphere exp (aim.5l_cs):
1879      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1880    o update AIM Equatorial Channel exp:
1881      use standard aim_v23 pkg and change the SST fields to be more realistic.
1882    o globalFile now works with exch2
1883    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1884      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1885    o limit timeave output for hi-res integrations
1886    
1887    checkpoint52i_post
1888    o removed CPP_EEOPTIONS.h from verification/*/code
1889    o updated the tiling for global_ocean_pressure
1890    checkpoint52i_pre
1891    
1892    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1893      the old pkg/aim).
1894    
1895    checkpoint52h_pre
1896    o shortened offending lines in exch2_send_rx?.template
1897    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1898    o genmake2: add build & execute test for NetCDF code
1899    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1900      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1901    o added useSingleCPUIO flag to monitor.F and mon_out.F
1902    o added temporary hack for sea-ice dynamics on the cube:
1903      metric terms are ignored and it is assumed that
1904      there is no sea-ice on cube faces 1, 2, 4, and 5.
1905    
1906    checkpoint52f_post
1907    o added exch2 cube routines to pkg/exch2
1908    o modified hs94.cs-32x32x5 to use it
1909    o added new grid files to hs94.cs-32x32x5
1910    checkpoint52f_pre
1911    
1912    checkpoint52e_post
1913    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1914      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1915    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1916      to work with implicit vertical advection and AB ;
1917    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1918    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1919     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1920    checkpoint52e_pre
1921    
1922    o fix bug in impldiff when Nr=1 or Nr=2.
1923  o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt  o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1924  o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.  o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1925  o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2  o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2

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