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revision 1.193 by edhill, Thu Oct 23 04:41:40 2003 UTC revision 1.822 by mlosch, Fri May 25 12:53:44 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  untagged  o pkg/seaice:
8      - allow values of SEAICE_elaticParm > 1
9      - make lsr boundary conditions free slip (by default, changes results of
10        lsr solver)
11      - no slip boundary conditions for lsr will follow
12      - set minimum of zeta to zero (and not 4e8) (changes results)
13    o change calculation of Visbeck K:
14      - no longer depend on tapering scheme; instead, compute slope (limited
15        by GM_maxSlope). this is equivalent to what was comuted before with
16        clipping or linear tappering.
17      - fix vertical averaging (wrong by 1 level)
18      - leave the old version (but will not be maintained) within
19        #ifdef OLD_VISBECK_CALC / #endif
20    o change error catch in calc_r_star to improve vectorization
21    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
22      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
23    
24    checkpoint59b
25    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
26      - export/import (between ocean & coupler) fields needed for ocean DIC.
27    o pkg/seaice:
28      - get rid of three more exchanges seaice_calc_viscosities (required
29        different loop boundaries in seaice_lsr and seaice_ocean_stress)
30      - bug fix in seaice_ocean_stress (update of lab_sea required)
31      - reduce loop boundaries to necessary minimum also in seaice_evp
32      - go back to the old way of computing deltaC/Z as the adjoint likes that
33        better
34    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
35      passive tracer to an Age Tracer) + update output.txt
36    o pkg/exf:
37      - implement A-grid / C-grid selection for wind-stress input files.
38      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
39      for now, in exf_bulk_largeyeager04.F only :
40      - change implementation for case where windspeed + 2. components wind-stress
41        are read-in. AND use rhoConstFresh to convert evap.
42    o pkg/seaice:
43      - use correct EXCH_UV for wind-forcing (on A-grid).
44      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
45        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
46    o pkg/exf:
47      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
48      EXF_INTERPOLATION:
49      - merge global_with_exf/code version of exf_interp_read.F
50        to the main code ;
51      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
52        reading the file ; Important: This options needs to be defined to recover
53        previous code.
54        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
55      - no longer loose real*8 precision along the way when using exf_iprec=64.
56    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
57      - change discretisation of evp-solver in order to avoid another exchange
58        (changes lab_sea) and clean up a little
59      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
60        help the adjoint (this also changes the results slightly)
61      - add a few "_d 0" where they had been missing in seaice_evp.F
62      - cleaning up: remove unused seaice_calc_rhs.F
63    o pkg/exf: some cleaning-up:
64      - change various "constants" into runtime parameters
65      - cleaned-up Large&Yeager04 routine which should eventually
66        replace exf_bulkformulae.F (changed names of S/R and CPP)
67        and merged various ALLOW_ATM_WIND options
68     only used with thsice pkg (in thsice_get_exf.F):
69      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
70        which are used when useStabilityFct_overIce=TRUE (= the default)
71      - change default values of ice & snow emissivity and scale downward LW
72        by ice & snow emissivity.
73    o pkg/thsice:
74     fix few little problems, in thsice_calc_thickn.F:
75      - growth vertically (and not laterally) if iceFrac == iceMaskMax
76      - melt laterally only if hIce < hThinIce (as the comments say)
77      and in thsice_extend.F:
78      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
79      - start to form ice as soon as the minimum ice-volume is reachable.
80     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
81      and cpl_aim+ocn
82    o pkg/kpp
83     - move computation of surface related input fields to KPP into a new
84       subroutine kpp_forcing_surf.F
85     - remove wrong (within bi,bj loops) EXCH calls.
86     - little cleaning (add argument myThid in last position, cvs header ...)
87     - for now, fix conservation problem by exchanging KPPviscAz (may not
88       be the best fix)
89    o pkg/seaice
90     - check for inconsistent evp parameter/cpp-flag combination
91     - remove leftover errIO flat for obsolete name list error handling
92    o OpenAD
93     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
94    
95    checkpoint59a
96    o pkg/seaice: some parameter clarifications and a little bit of clean up
97    o pkg/thsice: rename run-time parameters:
98       himin       -> hIceMin
99       himin0      -> hThinIce
100       hihig       -> hThickIce
101       i0          -> i0swFrac
102       transCoef   -> bMeltCoef
103       frac_energy -> fracMelting
104      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
105       with default values (for now) that do not change the results.
106      remove old version of thsice vars advection in pkg/seaice.
107    o in FFIELDS.h:
108      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
109      - make pLoad & sIceLoad always available (but still only used if
110         ATMOSPHERIC_LOADING is #define).
111    o pkg/kpp: replaced _KPP_RL with _RL
112    o bug fixes for vertical diffusivity computations when both KPP and
113        3D diffusivity arrays are used.
114    o pkg/seaice: fix bug in evp solver, while doing that
115      - change (improve?) discretization of stress computations for both
116        cgrid-lsr and evp solver
117      - add a new routine to compute strain rates
118      - the above changes lab_sea results
119      - add no slip conditions for evp solver (off by default), lsr-version
120        may follow
121      - fix exchange for shear at Z-points (does not change lab_sea)
122      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
123        (to force the user to pick a time step since there is not "safe" way
124        of choosing it)
125      - add principal stress diagnostics
126      - rearrange fields for evp a little to avoid having to call a: too many
127        exchanges and b: exchanges for stress trensor components which we do
128        not have.
129      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
130        of evp, complete rewrite for lsr case (latter is does not yet work
131        in all cases)
132    o pkg/kpp: add code to have mixing in shelf ice caverns
133      - add myThid to all kpp routines (long overdue)
134    
135    checkpoint59
136    o pkg/exf:
137      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
138        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
139      - move exf header files from lower_case.h to UPPER_CASE.h ;
140        add missing cvs Header & Name
141      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
142      - add namelist param. selectStressGridPosition, exf_monFreq
143      - retire many _CLIM routines, and remove data.exf_clim
144        + params moved to data.exf
145        + climsst, climsss now handled by exf_set_gen, i.e.
146          climss?period=0 refers to constant field,
147          climss?period=-12 to monthly forcing
148      - split up namelists in data.exf
149    o pkg/seaice:
150      - remove seaice_exch and seaice_exch_uv
151      - remove superfluous exchange of theta
152      - add myThid to seaice_budget_ocean/ice
153      - add new interface for atmospheric wind forcing (C-grid only)
154        + new routine
155        + two new field (taux, tauy for stress over ice)
156        + removed one global field (DAIRN) for C-grid case only
157    o pkg/thsise
158      - 2nd set of modifs for thsice adjoint in conjunction with exf
159    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
160    
161    checkpoint58y_post
162    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
163      vertical diffusivity, similar to that in MOM4; turned on using
164      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
165      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
166    o Added capability for 3D specification of background vertical diffusion
167      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
168      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
169      "data" file that contains the 3D vertical diffusivity coefficients.
170    o ice dynamics (pkg/seaice) with thsice thermodynamics:
171      - add code within pkg thsice to advect & diffuse sea-ice fields
172      similar to (and will replace) what has been added in  seaice_advdiff.F,
173      but: - conserving Mass, Heat & Salt.
174           - better when using non-linear advection scheme (not yet fully tested)
175           - can also be used in atmospheric set-up (for now, only the diffusion).
176    
177    checkpoint58x_post
178    o IO option for global-file compact format:
179      - add options when generating topology (utils/exch2/matlab-topology-generator)
180      - add I/O capability (pkg/mdsio).
181      - adapt utils/matlab/rdmds.m to read this format.
182      for now long-line format not yet supported by pkg/mdsio (& exch2).
183    o shelfice: add a few diagnostics
184    
185    checkpoint58w_post
186    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
187      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
188      (and replace horiVertRatio in NH code).
189      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
190                         and tutorial_plume_on_slope (sensitive to truncation)
191    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
192      directly to drive seaice model (C-grid only)
193    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
194     - reintroduce computation of wind from stress,
195     - compute tau (in exf_bulkformulae.F) from windstress averaged to
196       mass points to avoid tau = 0
197     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
198    o rdmnc.m: make it work with "global" files created with gluemnc
199    o rdmnc.m : some improvements in dealing with singleton dimension
200      (tested on all testreport mnc output files).
201    o genmake2: disable pkg/profiles if netcdf test fails.
202    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
203    o move call to cal_readparms up to make calendar parameters/variable available
204      to all packages
205    
206    checkpoint58v_post
207    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
208      useDynP_inEos_Zc tested.
209    o pkg/exf: changes to properly interpolate/mask/scale initial fields
210    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
211      and portions thereof.  See read_cs.txt for description and examples.
212    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
213      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
214      following the great-circle arc between those 2 points.
215    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
216      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
217    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
218     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
219     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
220     - still needs work (not working with some options ; efficiency to improve)
221       and serious testing.
222     - use this scheme for temperature & salinity in 2 advection test exp.:
223       advect_xy & advect_xz, respectively.
224    
225    checkpoint58u_post
226    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
227    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
228    o testreport: add option "-skipdir" to skip some test.
229    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
230      momentum calculation.
231    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
232    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
233      remove checkpoint.F and the_correction_step.F (no longer used);
234      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
235    o add option (linFSConserveTr) to correct for tracer source/sink due to
236      Linear Free surface
237    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
238    o pkg/thsice: fix reading mnc-pickups
239    
240    checkpoint58t_post
241    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
242    o pkg/mdsio:
243     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
244       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
245       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
246     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
247     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
248       either MDS_READ_FIELD or MDS_WRITE_FIELD )
249     - new S/R (to replace MDSWRITEMETA), which allows to write more
250       informations (variable names, time ...) to meta files.
251     - modify rdmds.m to give back the meta file content.
252    o pkg/diagnostics: change vertical interpolation to be safer, and more
253       flexible (define p-levels to interpolate to in data.diagnostics);
254      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
255       diagnostic pointer.
256    o pkg/seaice: more cleaning up of seaice_growth, added many comments
257    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
258    o fix multi-category seaice:
259     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
260       SEAICE_MULTICATEGORY
261     - fix short wave heat flux
262    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
263       and allow to use EVP solver. Change forward lab_sea: test both EVP
264       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
265    o Initial check-in of lab_sea adjoint
266      (very similar to natl_box_adjoint/code_seaice)
267      * used C-grid and EVP solver
268      * used KPP, GM/Redi
269      * uses inAdExact=.TRUE.
270      * gradient checks fail for both ADM and TLM
271        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
272        f.d. gradients actually seem more problematic than ADM, TLM gradients;
273        issue is related to forward mismatch between g77 an ifort
274    o pkg/seaice: overhaul of thermodynamics
275     - growth.F and groatb.F are replaced by new routine seaice_growth.F
276     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
277     - move a few global fields out of SEAICE.h into seaice_growth.F and
278       make them 2D (FICE/QNETO/ ...)
279     - remove FO (it is the same as QNETO)
280     - introduce a few local fields to avoid modifying external fields such
281       as atemp, etc.
282    
283    checkpoint58s_post
284    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
285      changed exf_set_gen.F so that
286        genperiod=0 means input file is one time-constant field and
287        genperiod=-12 means input file contains 12 monthly means
288    o CG2D: use pre-computed solver main-diagonal (stored in common block);
289      this affects truncation error ; generate new output file for exp. which
290      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
291        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
292        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
293        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
294        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
295        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
296    o start implementation of deep-atmosphere and anelastic formulation
297    o verification: remove 2nd copy of input files and use script "prepare_run"
298      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
299    o mom_common/vecinv/fluxform: fix a few initialisation isssues
300    o profiles: fix for multithreaded case
301    
302    o diagnostics: rename few diags:
303      s/'PRESSURE'/'RCENTER '/g
304      s/'TICE    '/'oceFreez'/g
305      s/'TAUX    '/'oceTAUX '/g
306      s/'TAUY    '/'oceTAUY '/g
307      s/'SWFLUX  '/'oceQsw  '/g
308      s/DIFx/DFxE/g
309      s/DIFy/DFyE/g
310      and add few ocean-forcing diagnostics:
311      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
312    o modifications to pkg/seaice/growth.F and budget.F, which change results of
313      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
314      as actual snow thickness.  It now refers everywhere to effective snow
315      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
316    
317    checkpoint58r_post
318    o modifications to pkg/seaice/growth.F, which change results of
319      lab_sea experiment: fixes pertain to melting snow over open water, to
320      masking EVAP under sea ice, and to using the correct AREA variable for
321      computations of EVAP, PRECIP, HSNOW, and GHEFF
322    o add ability to read bathy, salt, and theta using MNC (off by def)
323    o add flooding algorithm and advection of HSNOW for pkg/seaice;
324      both are turned off by default and do no change any results
325    o seaice advection with pkg/thsice: a step toward the use of non-linear
326      advection scheme, but #ifdef or commented out for now (requires more EXCH).
327    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
328      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
329      in natl_box (affects results @ truncation level: update output.txt)
330    o multi-threading and IO:
331      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
332      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
333        (needed to work with SingleCpuIO): tested in all verif. exp.
334    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
335      affects the results (but none of the verification test uses this scheme).
336    o Adding some pkg/diagnostics capability to pkg/seaice
337      (will certainly be subject to changes)
338    o ctrl: adding new control variables:
339      lwflux, lwdown, evap, snowprecip, apressure, runoff
340    
341    checkpoint58q_post
342    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
343      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
344      high_res_cube configuration by 4% on Columbia.
345    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
346      add (in global_with_exf/code) a version of EXF_INTERP_READ without
347      dynamical allocation (seems to work in multi-threaded).
348    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
349      single CPU io) so that TAF does not have to see EESUPPORT.h
350    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
351    
352    checkpoint58p_post
353    o obcs: stop if obcs is used with useCDscheme = .true.
354    o shelfice:
355     - fix a sign error so that no slip at shelfice interface works
356     - remove stop for combination non-hydrostatic code and shelfice. That does
357       not mean, that the results are correct, but at least they are numerically
358       stable
359    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
360    o added adjoint exch routined for all exch*3d* routines
361      and updated flow directives
362    
363    checkpoint58o_post
364    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
365      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
366    o change controling S/R for writing pickup file (new S/R do_write_pickup)
367      and clean-up reading/writing of pickup files.
368    o fix local version of read/write pickup (NH part) in rotating_tank/code
369    o simplify EXCH interface:
370     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
371     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
372    o added the regrid package
373    o shelfice:
374     - add a simple boundary layer scheme to reduce noise
375     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
376    
377    checkpoint58n_post
378    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
379       local variable (not in common block).
380    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
381      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
382      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
383        to work with SingleCpuIO.
384    o add "_d 0" to real constant of pkg/cfc subroutines ;
385       update exp. cfc_exemple & tutorial_cfc_offline output files.
386    o multi-threading and IO:
387      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
388        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
389      - barrier before and after reading.
390      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
391      - avoid using MDS_WRITELOCAL for LAND pkg output.
392      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
393        common-block variables ; Allows multi-threading with master-thread IO.
394    o change default MAX_NO_THREADS from 32 to 4 ;
395      and stop cleanly when MAX_NO_THREADS is too small.
396    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
397    
398    checkpoint58m_post
399    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
400       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
401    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
402       keep global_ocean.90x40x15 (for AD testing) with former secondary test
403       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
404    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
405        add MITgcm_tutorials (= code + all the tutorials)
406    o ecco, option to compute cost for total ssh (mean+anom)
407    o consistent with addition of ptracer and ssh in pkg/profiles
408    o profiles: adding ptracer and ssh
409    o testreport: change multi-test output-file name
410      (from output.txt.{name} to output.{name}.txt)
411    o profiles: now ok for mutli-tiles case
412    o seaice: add 4 parameters for different advection schemes for area,
413      (effective) seaice thickness, enthalphy, and snow height. Their default
414      is the standard parameter SEAICEadvScheme
415    o calc_gw:
416     - add cosFacU in zonal viscous flux (harmonic.visc.).
417     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
418       of tutorial_plume_on_slope.
419    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
420    o calc_gw: true flux-form, account for horizontal grid spacing.
421      update rotating_tank results, but not plume_on_slope (affected at
422      truncation level, 11 digits).
423    
424    checkpoint58l_post
425    o calc_gw:
426     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
427     - remove side-drag for now (need to fix it); update plume_on_slope results.
428     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
429    o commit code to make SST/SSS weights spatially variable
430      (based on either variable in-situ or variable initial T/S weights)
431    o pkg/ecco:
432      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
433        now based on horizontally varying weights wthetaLev, wsaltLev
434      * cost_averagesflags now returns year indices in addition to day, month
435      * sflux balance is performed on annual basis
436        (sflxumm, sfluxmm2, bal_sfluxmm)
437      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
438        including separate counting and multipliers
439    o pkg/rbcs
440      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
441    
442    checkpoint58k_post
443    o testreport:
444     - always build in dir. "build" (if not there, mkdir build instead of building
445       & running in input)
446     - run in dir run (if it exists), in build otherwise.
447     - call prepare_run (if input/prepare_run exists)
448     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
449    o pkg/exf modifications to interpolation and rotation routines for more
450       reasonable treatment of North Pole singularity: for tracers North Pole
451       value is set to northernmost zonal-mean value, for zonal velocity it is
452       set to zero, and for meridional velocity it is set to northernmost value.
453    o pkg/exf/exf_check_range.F
454     - add tile index to diagnostics and move stop statement to the very
455       end of the routine.
456    o pkg/diagnostics: (diagnostics_main_init.F)
457      define title of isomorphic variables according to the current config.
458    o pkg/thsice with pkg/seaice dynamics:
459    - fix domain of computation (interior only, required for exf) and do exchanges
460    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
461    o towards a standard way of dealing with multi-threading in MONITOR
462      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
463    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
464       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
465    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
466    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
467    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
468       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
469    o tracer advection:
470     - clean-up and simplify calc_common_factors.F
471     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
472       advection subroutine (but still not used within DST advection S/R)
473    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
474    
475    checkpoint58j_post
476    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
477      from file (collects calls previously in FORWARD_STEP)
478    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
479    o adjoint store dir. adjusted accordingly
480    o genmake2
481      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
482    
483    checkpoint58i_post
484    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
485      on wind stress (SEAICEstressFactor defaults to 1.)
486    o Total number of Timers is finite (<=40): comment out 2 non-essential one
487      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
488    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
489      on CS-grid: no longer loosing mass.
490    o exf & curvilinear-grid: no longer modify longitude xC & xG.
491    o pkg/ggl90: fix sloppy output and fix a bug
492    o pkg/seaice: added SEAICEuseEVPpickup parameter
493      - Set to false in order to start EVP solver with
494        non-EVP pickup files when using SEAICEuseEVP
495      - fix sign error in diffusion in seaice_calc_rhs
496    
497    checkpoint58h_post
498    * Modifications for bottom topography control
499      o replace hFacC by _hFacC at various places
500      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
501      o add non-self-adjoint cg2d_nsa
502      o update autodiff support routines
503      o re-initialise hfac after ctrl_depth_ini
504      o works for 5x5 box, doesnt work for global_ocean.90x40x15
505    * Adding verification for 5x5 box (4-layer) bottom topography control
506    
507    checkpoint58g_post
508    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
509       used for mean seasonal cycle, mean diurnal cycle); add an example
510       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
511    o pkg/ggl90:
512      - add parameter (minimum surface kinetic energy)
513      - fix bug (avoiding division by zero)
514    o couple pkg/thsice to pkg/seaice:
515      - modify advection in seaice to accomodate new scalar fields to be advected
516      - only muliDimAdection scheme work with seaice/thsice
517      - mapping of thsice-variables to seaice-variables, back and forth
518      - does not break the verification experiments, but does not give the
519        desired results either
520    o pkg/seaice
521      - make (default) second order advection a bit less confusing?
522    
523    checkpoint58f_post
524    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
525      to pkg/seaice):
526      - new routines thsice_map_exf and thsice_get_exf provide the interface
527      - add an additional formal parameter to thsice_solve4temp
528    o pkg/exf:
529      - add new fields wspeed, snowprecip (to be able to couple to thsice)
530      - correct Stefan-Boltzmann constant
531      - new parameter for longwave surface emittance
532      - separate some stuff from exf_bulkformulae into new routines  
533        exf_radiation, exf_wind
534      - add new parameters and constants: longwave emissivity for ocean, ice
535        and snow, evaporation parameters over ice
536      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
537        either wind from stress or stress from wind
538    o pkg/thSIce:
539    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
540    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
541       and THSICE_CALC_THICKN
542    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
543    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
544      to make debugging easier.
545    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
546    o pkg/bulk_force:
547      - clean-up comments and parameters ;
548      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
549    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
550      generate new output for test-experiment: aim.5l_cs.thSI
551    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
552      testreport accordingly
553    
554    checkpoint58e_post
555    o SEAICE_CGRID adjoint done
556    o R_STAR adjoint implemented.
557      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
558      * need to sort out init. of h0facc, etc.
559    o Make pkg/profile fully independent of ecco,cost, etc. stuff
560      to be able to use it in pure forward.
561    
562    checkpoint58d_post
563    o upgrade simple test-experiment to tutorial example:
564     step.1: duplicate the experiment and (step.2) will remove the old copy.
565      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
566      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
567      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
568      tutorial_global_oce_biogeo    <- copy of dic_example
569      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
570      tutorial_plume_on_slope       <- copy of plume_on_slope
571      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
572      tutorial_global_oce_optim     <- empty for now (David ?)
573      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
574     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
575    o correct a sign problem in cost_scat.F
576    o obcs and ptracers: fix boundary conditions for advections schemes
577      with larger stencil
578    o thsice adjoint: start
579    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
580      completeness
581    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
582      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
583    o ptracers adjoint:
584      * avoid extensive recomputatations
585      * fix missing re-init. of gptr (missed by TAF)
586    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
587      me to turn off the excessive output to STDOUT that this package produces
588    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
589      and add those terms in Vector-Invariant formulation.
590    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
591      if the control period (xx_hfluxperiod etc) is 0
592    o in profiles pkg, clean routines and fix details
593    o in ecco pkg, reading ssh data:
594      fix problem in case the model does not start at iter0=0
595    o fix mnc-pickup/restart for ptracers
596    o new package prifiles:
597      code to compute profile-based cost by Gael Forget
598      (modifs in ecco, ctrl, autodiff)
599    o Benign bug fix in initialization (spotted by M. Mazloff) of
600      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
601    
602    checkpoint58c_post
603    o adjoint: finish NLFS adjoint and provide reference output in
604      verification/global_ocean.90x40x15/results_ad_nlfs
605    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
606      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
607      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
608      with SEAICE_CGRID defined.
609    o move calendarDumps from "data" to "data.cal" and clean-up the code
610      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
611    o add useEXF & useCAL flags (for now, set in hard-coded way)
612    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
613      (were missing in NH mode, and wrong in quasihydrostatic mode).
614      waiting for Chris updated version of calc_gw to add those CALLs.
615    o fix bug in quasihydrostatic S/R ;
616      add a test for this option: global_ocean.90x40x15.qshyd
617    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
618      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
619    o add on/off flag useOffLine for package OFFLINE
620    o seaice:
621      - modify advection so that it works also on the C-grid
622      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
623        problem in multi-tile runs with C-grid
624      - add flags for clipping ice velocities and/or masking solver forcing
625      - fix drag (ocean on ice) formulation and a bug that caused noise in the
626        C-grid solver
627      - added a few comments to seaice_diffusion.F
628      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
629        are now exclusive)
630      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
631        required re-ordering the code a little:
632       + make DAIRN global variable (defined in SEAICE)
633       + move computation of the viscosities eta and zeta into a new separate
634         routine (because I need to recompute them in seaice_ocean_stress.F)
635    
636    checkpoint58b_post
637    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
638      update output.txt of exp. aim.5l_cs.thSI
639    o various mnc cleanups and improvements:
640      + shrink lookup tables by factor of ~4
641      + better error reporting when running out of lookup space
642      + able to handle longer path/file names (up to 500 chars)
643    o adjoint:
644      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
645      - TBD: "hidden" mom_vecinv recomp. in dynamics
646    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
647     (allow to differentiate between forcing components using new integer flags:
648      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
649     and add new flag to put Dissipation tendency out of Adams-Bashforth.
650    o ecco
651      - enable trend removal from SSH anomaly obs.
652    o adjoint
653      - a fix for PmEpR when #undef EXACT_CONSERV
654      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
655      - try to fix "hidden" recomp. in forward_step for NLFS
656        (NLFS seems broken sometimes after I checked it in)
657    o seaice:
658     - add c-grid version of the dynamic solver:
659       + three new routines that are the c-grid substitute lsr, dynsolver
660         and ostres
661       + put a few fields that were local to dynsolver into global common
662         blocks, so that I can move the computation of stresses etc into
663         seaice_lsr (saves coding but may break the adjoint).
664     - replace more hardwired parameters by runtime parameters
665     - add ice masks that mask the rhs of the implicit solvers where there
666       is no ice (commented out in seaice_dynsolver, because i am not sure
667       if this works properly), eventually this should replace the clipping
668       of ice velocities in seaice_dynsolver to +/-40cm/s.
669    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
670      include it only where its needed
671    o move balancing of fluxes before the call of external_forcing_surf
672    o seaice:
673      - correct units of turning angles (now they are really in degrees)
674      - move computation of GWATX/Y out of main routine into dynsolver
675      - initialize GWATX/Y in seaice_init
676    o Apply mask on Fresh-Water flux (needed for SSH forcing).
677      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
678    o seaice: add runtime flags for turning angles (default to zero)
679    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
680      and trend from exf forcing and ctrl control adjustments
681    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
682      (since checkpoint57x_post)
683    o change the default rotation period to 86164.s = the Earth rotation
684    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
685      and based on a reference stratification. Tested within hs94.cs-32x32x5.
686    o seaice advection: add code for choosing between the default (2nd order
687      central differences) and multiDim advection schemes provided by
688      pkg/generic_advdiff
689    o seaice:
690      - removed all references to SEAICE_GRID.h fields from
691        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
692        (cubed-sphere configuration will change a little)
693      - grid computations in seaice_init are obsolete now.
694      - cleaned up code a little so that is easier to read (hopefully).
695      - added new (better?) discretizations of default advection and diffusion
696        (turn on with SEAICEuseFluxForm)
697      - replace 1 in 3d global fields by kSurface in growth.F
698      
699    checkpoint58a_post
700    o seaice:
701      - bug fix in advect.F
702    o shelfice:
703      - separate shelfice load anomaly from pload (breaks with time
704        dependent forcing), => introduce constant field shelficeLoadAnomaly.
705        Its default is 0., but it may be computed more cleverly from (unknown)
706        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
707        done offline. A good approximation of the pressure load anomaly is
708        necessary to avoid large initial adjustment processes underneath
709        deep-reaching shelfice.
710      - small fix in ISOMIP shelfice_thermodynamics
711      - add more sophisticated thermodynamics of Hellmer (1989), this is
712        now the default
713      - give a few constants more intuitive names
714    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
715      if bulk formulae are used in long integration (especially EmPmR). Turn
716      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
717      if balancePrintMean, the imbalance that is substracted is printed to
718      STDOUT.
719    o fix bug (typo) in obcs_apply_eta.F
720    o add a new package shelfice which enables us to model the circulation
721      underneath shelf-ice with draughts of hundreds of meters.
722     - works
723     - to do: + include improved thermodynamics
724              + check whether kSurfC (from model/inc/SURFACE.h) can be used
725                instead of new field kTopC
726              + can we use topoFile, Ro_surf and existing code in ini_depth.F
727                instead of new field R_shelfIce and new code in ini_depth.F
728                and ini_mask_etc.F?
729              + adjust vertical mixing schemes?
730    o seaice pkg:
731     - add a cpp-flag to include a simple formula for a salinity dependent
732       freezing point of sea water at the surface
733     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
734       meridional stresses are now different (and hopefully correct)
735    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
736       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
737       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
738    o pkg/diagnostics: add options and parameters for regional-statistics
739       diagnostics ; define regions by reading a region-mask from a file
740       (might add other options later)
741    o pkg/bulk_force:
742     - add option and parameters to use AIM surface-flux formulae.
743     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
744       others forcing fields (defined in PARM05, parameter file "data") are loaded
745       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
746     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
747     - use the right EXCH call for uwind,vwind (to work on CS-grid).
748     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
749       and parameters (note: calcWindStress replaces .NOT.readwindstress).
750     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
751    
752    checkpoint58
753    o add "--embed-source" option to genmake2 which, when the supporting
754      tools can be compiled (as determined by genmake2) will turn on the
755      embed_files package which then embeds the entire MITgcm source code
756      (*.[fFhc] + Makefile) used for the build within the executable
757      - requested by CNH but off by default
758      - adds a paltry <9MB to the mitgcmuv executable in most cases
759      - only writes the output when useEMBEDSRC in eedata is true
760    o clean up 3-dim. relaxation codes:
761      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
762      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
763      * Thanks to Tom Haine for testing!
764    
765    checkpoint57z_post
766    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
767      affects output (@ truncation level) of exp. plume_on_slope ; updated.
768    o fix the pickup behavior for obcs in combination with ptracers
769    o fix a bug in ptracers_external_fields_load
770    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
771      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
772    o transfered surface NH pressure to eta field (if exactConserv).
773    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
774         and update lab_sea output.txt file.
775    o completing 3-dim. relaxation code: additional term
776         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
777      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
778      * At compile time, in "EXF_OPTIONS.h" set
779          #define  ALLOW_CLIMTEMP_RELAXATION
780          #define  ALLOW_CLIMSALT_RELAXATION
781      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
782          tauThetaClimRelax3Dim = 15552000.0,
783          tauSaltClimRelax3Dim  = 15552000.0,
784      * 3 cases:
785          1) Use a constant-in-time 3-dim. field
786          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
787          3) Real-time relax. to time-evolving prescribed field
788    o Adding Laplacian-type smoothness constraint on
789      initial and boundary (forcing) controls (ic, bc)
790      * enable at compile-time via
791        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
792      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
793      * Absolute scale somewhat unclear so far
794      * no area weighting was included since no other cost term does so far
795    
796    checkpoint57y_post
797    First step for a NLFS adjoint
798    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
799    o new init. routines for calc_r_star, calc_surf_dr
800    o still need to deal with ini_masks_etc
801    o testreport seemed happy
802    checkpoint57y_pre
803    
804    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
805    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
806    o add new offset feature to offline pkg (plus minor cleanup)
807    o cfc fixes for final year of integration
808    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
809      be in GCHEM_OPTIONS).
810    
811    checkpoint57x_post
812    o fix testreport Pb in multiple test experiment.
813    o cleanup our namelist syntax in verification:
814      - make it more F95 standards compliant (some work still needed)
815      - allows the vast majority of our tests to work with gfortran
816    o Non-Hydrostatic:
817     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
818     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
819    o Allow to apply AB on T,S rather than on AB(gT,gS):
820     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
821     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
822       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
823     - need a "clever" read_pickup to restart from the other AB formulation
824    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
825    o remove some unused variables (reduces number of compiler warnings)
826    o adjoint
827      * Disable useVariableViscosity for adjoint for time being
828        (there are a number of extensive recomputations)
829      * Initialize certain variables needed for adjoint
830    
831    checkpoint57w_post
832    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
833                 fix the singleCpuIO RS version of MDSWRITEFIELD
834       and add a WARNING if using globalFiles=T with multi-processors.
835    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
836      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
837    o tracer advection scheme:
838      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
839       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
840       was not very convenient).
841      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
842       (further tests needed for the implicit DST & Flux-Limiter schemes).
843    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
844      and sRef for convenience, handy, when you want to initialize
845      ptracers in a large domain with a constant non-zero value. Also,
846      untangle ptracers_init.F a little.
847    
848    checkpoint57v_post
849    o change dome exp. to use variable viscosity in side-drag terms.
850    o remove all the files from the cfc_offline test since they are now
851      incorporated into tutorial_cfc_offline which has been producing
852      identical results for a few days of testing
853    o add new parameter: sideDragFactor to enable half-slip-side BC
854      and change side-drag S/R to use viscosity from mom_calc_visc
855      (can switch back by setting sideDragFactor=0.); affects results at
856      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
857       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
858    o vorticity & strain are now computed without masking, to account for
859      no-slip-side BC in variable viscosity calculation ; mask is applied
860      anyway later on, before computing advection/coriolis terms.
861    o modify exp4 to test new obcs support for reading from external files
862      and for passive tracers
863    o fix behavior of ptracers_monitor when monitor output is written to a
864      netcdf-file; still not independent of monitor.F (writes in the same
865      file).
866    o change default value of tRef (put a uniform, meaningful value for ocean
867      & atmos) and initialize sRef (was missing, as Martin mentioned).
868    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
869      to be proportional to enstrophy dissipation length.  Thus,
870       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
871      This is now consistent with Smagorinsky and with the manual.
872    
873    checkpoint57u_post
874    o OBCS and PTRACERS: add open boundary support for passive tracers
875      - either use homogenous (pseudo) v.Neumann conditions or prescribe
876        OB-values from file; this is not different from the way theta and salinity
877        are treated
878      - however, Orlanski-radiation conditions are not supported, and the model
879        will stop if you use pTracers and Orlanski at the same time.
880      - beefed up the rountine obcs_external_fields_load: now only those open
881        boundary values are overwritten with values from files for which there
882        are really files, otherwise the OB-fields remain untouched. This makes
883        it possible to use different OBs at different ends of the domain (as
884        with EXF)
885    o reduce number of exch calls in shap_filt (s2).
886    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
887      truncation level) 4/5 MLAdjust test results (11&12 digits match).
888    
889    checkpoint57t_post
890    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
891    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
892      same truncation, independent of the face number: affects affects several
893      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
894    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
895      note that biharmonic viscosity + no-slip was not tested in any experiment.
896    o fix bug in non-linear free-surf side-drag ; generate new output for
897      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
898    o make mnc honor the writeBinaryPrec flag for most kinds of output
899    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
900    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
901      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
902    o add brackets in multi-terms sum to get same truncation, independent of
903      the face number (manage to get exactly same value of gU,gV at the cs-edge)
904      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
905    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
906      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
907      a maximum grid-scale Reynolds number.  Also, changes all length calculations
908      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
909      Suggested values of viscosity parameters found in mom_calc_visc.
910      Many new viscosity diagnostics available.
911    
912    checkpoint57s_post
913    o Add clearing-house for viscosity calculations, mom_calc_visc and
914      correct numerous bugs in LeithD and Smagorinsky discretizations.  
915      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
916      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
917      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
918      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
919      The Strain-Tension form is now called with useStrainTensonVisc=.true.
920      ViscAhStrain and viscAhTension are now retired.
921    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
922    o In response to JMC's bug report, genmake2 now ignores any soft-links
923      that it finds in the *current* directory when searching for files.
924      Soft-links found in any other source directories will still work as
925      they did before.
926    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
927      a C routine to unlimit the stack size
928    o mnc-ify pkg/aim snapshot vars
929    o mnc-ify pkg/land as requested by Daniel
930    o various changes to mnc including:
931      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
932      - output can now be grouped so that all files within a group
933          change the ITER portion of their names in lock-step together
934      - can now read ("global") PER-FACE (in addition to PER-TILE) files
935          and works with both EXCH1 and EXCH2 (but needs more testing)
936      - writing works for all verification test cases w/ g77 on Linux
937    
938    checkpoint57r_post
939    o make MNC variable initialization happen earlier
940    o add diagnostics for (almost) each term of the momentum Eq.
941    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
942    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
943    o remove MINIMAL_TAVE_OUTPUT option ;
944      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
945    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
946      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
947    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
948    o add time-dependent SST, SSS control
949    o cost terms in ecco/ modularized (new cost_generic.F)
950    o cost_averages routines are modularized (new cost_averagesgeneric.F)
951    o new infrastructure for seaice model vs. obs misfits in seaice/
952      * driver from the_main_loop.F is seaice_cost_driver.F
953      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
954      * gradient check in Exp. 6a of natl_box_adjoint/
955    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
956      (see README file)
957    
958    checkpoint57q_post
959    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
960    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
961      - bug was reported by Jean-Michel and Ian Fenty
962    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
963      update exp. cpl_aim+ocn output.
964    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
965      Needed for high-res. runs with large global files
966      to be able to limit tapelev size
967    o Changed some tests for adjoint:
968      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
969      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
970      * global_ocean.90x40x15/ back to default 3-level checkpointing
971    o Modifications to enable scripted COMMON to MODULE conversion
972      * verification/OpenAD/code/ has necessary scripts and description;
973      * converts, compiles and runs successfully;
974    
975    checkpoint57p_post
976    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
977    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
978      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
979    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
980    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
981      (was already the case for dissipation with mom_vecinv,
982       and also the case for grad.PhiHyd when staggered-timeStep)
983      This will allow to put dissipation out-off the AB time-stepping.
984     Unfortunately, affects truncation error. Update output of exp. that "fails"
985      (cg2d matching number) and leave the others for later: front_relax(10),
986      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
987      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
988    
989    checkpoint57o_post
990    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
991      (2) its ready to be documented during the 20050801 DocFest
992    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
993      for ideal_2D_oce and lab_sea on linux_ia32_g77
994    o set to #undef CTRL_SET_OLD_MAXCVARS_30
995      in global1x1_tot/code_seaice_adj to access indices 32, 33
996      (worth another tag)
997    
998    checkpoint57n_post
999    o adding precip control xx_precip 32
1000    o adding swflux control xx_swflux 33
1001    o Replacing 10 forcing penalty cost routines by 1 generic.
1002    o Implementing partitioning in time-mean and variable adjustment
1003      for atmos. state.
1004    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1005    o in natl_box_adjoint:
1006      * updated exp 1 to 10
1007        (but does not have time-mean vs. variable split results yet)
1008    o updated global1x1/*_seaice_adj/
1009      to incorporate latest changes
1010    o enable useSingleCpuIO for mdsio vector routines
1011      (applies in particular to tapelev I/O)
1012    o removed inefficient K-loop in all active_file*control*.F
1013    
1014    checkpoint57m_post
1015    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1016      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1017    o pkg/exch2: filling of face-corner halo regions is optional
1018      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1019    
1020    checkpoint57l_post
1021     tag before updating tutorials (pre-release-2)
1022    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1023       for output and interpolation of input fields onto model grid)
1024    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1025       Affects results of exp. rotating_tank ; update output.txt.
1026    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1027          and taking the square quantity and/or using a fraction-weight field.
1028    o fix aim_diagnostics_init.F mate numbers.
1029    o add mnc output capability to diagnostics/diagstat and update
1030      our cvsignore files for the ACSII output generated
1031    
1032    checkpoint57k_post
1033    o lab_sea now uses diagnostics package and provides a suite of
1034      new EXF diagnostics output.
1035    
1036    checkpoint57j_post
1037    o exf
1038      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1039        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1040        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1041      * extended diagnostics output
1042        - now includes all EXF variables
1043        - hs, hl moved to common block
1044        - separate S/R for diagnostics, called after ctrl vector is added
1045        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1046        - EXFqnet contains true Qnet (i.e. includes qsw)
1047      * updated verif. lab_sea, global_with_exf
1048      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1049        to ensure that diagnostics sees a true EXFqnet
1050    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1051    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1052      several times with different frequencies.
1053    o mnc-ify the thsice package as requested by Daniel Enderton
1054      - the monitor--MNC output needs work
1055      - many attributes need to be added (most are currently blank)
1056    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1057      - many attributes need to be added (most are currently blank)
1058    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1059    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1060    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1061      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1062         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1063    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1064     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1065    
1066    checkpoint57i_post
1067    o Diagnostics package was changed: diagnostic allocation is now deactivated
1068      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1069    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1070      add 1rst Order upwind vertical Shear.
1071    o add a quick fix for A/B checkpointing in OFFLINE mode
1072    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1073      end-run around the C/Fortran linking horror in eesup/src/timers.F
1074    o added pkg/runclock: allows user to terminate run based on wall clock
1075    o added non-hydrostatic scaling parameter: nh_am2
1076    o pkg/my82: futile attempt to make results compiler-independent by adding
1077      some "_d 0", etc. no effect.
1078    o for mnc output, fill the 'T' coordinate var with myTime and create a
1079      separate 'iter' variable for iteration count
1080    o pkg/diagnostics:
1081      add new capability: output of Global/Regional & per-level statistics ;
1082      tested against monitor output (including land & thSIce) on various exp.
1083    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1084    
1085    checkpoint57h_done
1086      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1087      data.diagnostics, data.gchem, data.ptracers) is done.
1088    
1089    o pkg/diagnostics: prepare for Global/Regional statistics.
1090      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1091    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1092      and rename it: DIFFERENT_MULTIPLE
1093    
1094    checkpoint57h_post
1095    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1096    o pkg/diagnostics: change output frequency, now in seconds (instead
1097      of Nb of iterations). This requires to change data.diagnostics.
1098    checkpoint57h_pre
1099    
1100    o in mnc, let the user create the output dir if both mnc_outdir_date
1101      and mnc_outdir_num are false
1102    o add fflags() to pkg/diagnostics which allows one to specify, on a
1103      per-file basis, the file precision [default behavior is unchanged]
1104    o added diagnostics to pkg/kpp, including computation of mixed layer
1105      depth based on a temperature/density criterion
1106    o updated verification/natl_box to test the new pkg/kpp diagnostics
1107    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1108    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1109    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1110      not mnc -- this mistake was found by JMC and is now corrected
1111    
1112    checkpoint57g_post
1113    o add Adams-Bashforth 3rd Order time stepping:
1114      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1115      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1116    checkpoint57g_pre
1117    
1118    o make lambda[Theta,Salt]ClimRelax spatially varying
1119      (default remains spatially uniform constant based on tau)
1120    o added new control variables
1121      * init. uVel, vVel, etanN
1122      * lambda[Theta,Salt]ClimRelax
1123    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1124      (suggested by G. Forget)
1125    
1126    checkpoint57f_post
1127    o add parameter "baseTime" = model base time = time at iteration zero
1128      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1129      account for baseTime shift
1130    o move Coriolis arrays from PARAMS.h to GRID.h
1131    checkpoint57f_pre
1132    
1133    o mnc-ifying the seaice package
1134    o introduced an alternative length scale calculation for use in the limiting
1135      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1136    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1137    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1138      as well as grad(vort3).  Made it compatible with both approximate form
1139      for the cubed sphere and full form of these gradients.  Added flag
1140      useFullLeith to select between approximate and full form.  
1141    o add "d0" in getcon.F to reduce differences between compilers/platforms
1142      update output.txt of exp. fizhi-gridalt-hs
1143    o change port_rand funtion to allow to set the seed.
1144    o fix obscure MNC bug involving conversion between reals and integers
1145      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1146        new version is now more standards-compliant
1147    o adjoint-related modifications
1148      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1149      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1150      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1151    
1152    checkpoint57e_post
1153    o Adding eddy stress controls a la Ferreira et al.
1154    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1155    
1156    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1157      update output.txt of exp. fizhi-gridalt-hs
1158    o add more "Z" dimensions and associated coordinate vars to MNC
1159    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1160    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1161      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1162      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1163      months and years.  Requires pkg/cal.
1164    o diagnostics: add pickup functionality
1165      - off by default for backwards compatibility
1166      - current version only uses MDSIO -- MNC will be added
1167    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1168    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1169    
1170    checkpoint57d_post
1171    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1172    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1173      output from the diagnostics package
1174    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1175    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1176      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1177    o add coordinate variables to the MNC output from the diagnostics package
1178    o change MNC-flags default value: true when useMNC=TRUE
1179    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1180      the ability (off by default) to read the grid information using MNC
1181    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1182    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1183    o do snap-shot diagnostics at the middle of the time-interval (instead of
1184      at the end).
1185    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1186      new test for AIM with thSIce + slab-ocean
1187    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1188    o move state variable diagnostics to the beginning of the time step ;
1189      (note: still needs some work specially for snap-shot diagnostics)
1190      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1191    
1192    checkpoint57c_post
1193    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1194    o generate new output.txt files on faulks with g77 & the new -ieee option
1195    checkpoint57c_pre
1196    
1197    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1198      update output.txt of exp. global_ocean.90x40x15
1199    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1200      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1201    o add saltFlux(+File) forcing capability with periodicExternalForcing
1202    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1203    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1204    o improvements for the MNC output from DIAGNOSTICS:
1205      - correct handling of the unlimitied dimension
1206      - all dims now have associated coordinate variables
1207      - variables located at U, V, and Corner ("Z") points are now written
1208        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1209        *all* data points are output
1210    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1211    o added pkg/seaice/seaice_monitor.F
1212    o mdsio_readfield.F can now read files visible only to master MPI process.
1213    o pkg/seaice: some test code for ice-modified ocean stress
1214    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1215      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1216      spurious negative numbers for precipitation and humidity.  Will cause
1217      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1218    o pkg/ctrl/
1219      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1220        May be enabled via doPackDiag
1221      *  introduce z-scaling of
1222         + gradient (doZscalePack) and
1223         + control (doZscaleUnpack)
1224    o pkg/mdsio/
1225      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1226      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1227    
1228    checkpoint57b_post
1229    o simplify options in diagnostics_fill arguments (remove weird combinations)
1230    o fix MNC coordinate variables so that they now contain per-face index
1231      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1232      general, EXCH2 grids are only aligned to a "local" coordinate system
1233    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1234    o Implement instantaneous output within pkg diagnostics:
1235      setting a negative frequency in data.diagnostics produces
1236     "snap-shot" output (as opposed to time-average if freq > 0)
1237    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1238      NOTE: change ptracer diagnostics name: use 2 characters to work with
1239            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1240    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1241      becomes the coordinate variable for the 'T' dimension
1242    o add CF-style coordinate variables to MNC
1243      - just a first cut:  numbers are meaningless on the cubesphere and
1244        missing along the T axis but otherwise it works!
1245    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1246    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1247    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1248      this is based directly on what the model compute, so that the content of
1249      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1250    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1251    o clean up build options files for SunOS, in particular
1252      - remove -traditional from xmakedepend
1253      - change -xarch=v9 to -xarch=native for f77
1254      - restore use of make (not gmake)
1255      - add CC=gcc if using g77
1256    o changes per discussion of AM, JMC, & EH3 today:
1257      - move redundant "grid" variables out of "state" -- in preparation of
1258        creating proper CF-style coordinate variables and in recognition
1259        that any/all grid variables can be easily copied (eg. w/NCO) from
1260        the grid files into any of the other NetCDF files
1261      - *always* output grid variables with MDSIO (this will eventually be
1262        changed)
1263      - output MNC grid file if useMNC is true
1264    o every instance of _END_MASTER() has been found and replaced with
1265      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1266      preprocessors
1267    o re-arrange diagnostics pkg initialisation:
1268     - allow each package to extend the available diagnostics list
1269     - add some checking and fix small problems (multi-threaded, ...)
1270     - new S/R diagnostics_fill (replace fill_diagnostics):
1271       look through the short list of active diag. (instead of the long list)
1272       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1273    
1274    checkpoint57a_post
1275    o this set of changes restores TAMC compatibility
1276      tested for global_ocean.90x40x15 adjoint on trough
1277      (what a pain)
1278    
1279    checkpoint57a_pre
1280    o some modifs in tools/build_options for sunos
1281    o call ctrl_pack for ctrl at end for optimcycle=0
1282    
1283    checkpoint57
1284    o add horizontal bi-harmonic viscosity for vertical velocity
1285      - new parameter viscA4W (defaults to viscA4)
1286      - affects only non-hydrostatic code
1287      - to be done: no-slip lateral boundary conditions
1288    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1289    o implement Implicit Vertical advection for pTracers
1290    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1291      (implemented also for implicit vertical diffusion & advection)
1292    o OBCS: extend application of tracer open boundary conditions
1293      to a strip beyond the boundary of width Olx/Oly
1294    o add call monitor to TAF set of required calls (flow directives)
1295      and include in natl_box_adjoint
1296    o untangle a few ifdefs related to cost, ctrl, autodiff
1297      untangel a few ALLOW_ECCO_OPTIMIZATION
1298    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1299      (theta2, salt2 in ecco_cost_weights)
1300    
1301    checkpoint56c_post
1302    o OBCS as control variables
1303      - update ctrl_ad_diff.list, obcs_ad_diff.list
1304      - remove balance of obcs controls from default
1305      - fix index bug nobcs in ctrl_init
1306      - fix dummy fields filen in ctrl_pack
1307      - add dummy weights for obcs
1308    o lsopt: comment out fort.94 output
1309    o optim:
1310      - remove unnecessary header files
1311      - adjusted namelists
1312      - add xerbla.F to Makefile
1313    o exf:
1314      - multiple modifications of exf_check_range
1315      - unit change in exf_init_runoff from [m/year] to [m/s]
1316    o mdsio:
1317      - i/o-vector change debugLevel from debLevA to debLevB
1318    
1319    checkpoint56b_post
1320    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1321      is called from DO_THE_MODEL_IO
1322      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1323      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1324      - clean up PTRACERS_WRITE_TIMEAVE a little
1325    o add another verification experiment that tests both the cfc-pkg and
1326      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1327      reactive tendencies treated inline with regular timestepping
1328    o testreport previously did a lousy job of comparing small numbers, so
1329      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1330      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1331      testreport.
1332    o ptracers_monitor: bug fix for MPI
1333    
1334    checkpoint56a_post
1335    o GCHEM: finish reorganizating the package
1336      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1337        (introduces another 3D-array for each passive tracer, but only if
1338        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1339        gchemTendency is not needed because the timestep is done separately)
1340      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1341      - GCHEM is now---more or less cleanly---separate from PTRACERS
1342      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1343        so clear to me how that should be done in a general way.
1344    o CFC: improve formatting of output in CFC_ATMOS
1345    o PTRACERS:
1346      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1347        that ALL experiments with ptracers enable can be checked. This makes
1348        GCHEM_MONITOR obsolete.
1349      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1350        monitorFreq
1351      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1352    o add PTRACERS (PTR0[1-5]) to testreport output
1353    o exf_check_range:
1354      * default changed to .TRUE.
1355      * will check values for niter0 if debLevA, every timestep if debLevB
1356      * STOP in exf_check_range if 'out of range'
1357      * range chosen generous to allow for potential extema
1358      TBD: a version with stricter range
1359           permitted range would be runtime parameters
1360    o GMredi:
1361      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1362      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1363      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1364    o GCHEM:
1365      - move call to GCHEM_FORCING_SEP, so that it is now called before
1366        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1367      - introduced a useGCHEM runtime flag and applied it everywhere.
1368      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1369        this flag is now only visible within GCHEM-pkg routines.
1370      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1371        be replaced by a 3D array that is computed before thermodynamics; for
1372        this, the tracer ID iTracer had to be included into the parameter list
1373        of ptracers_forcing
1374      - set up forward_step to call gchem_forcing, that will replace
1375        gchem_forcing_int in ptracers_forcing
1376      - cleaning up
1377    o small cleaning of exch2: remove files that are also in eesupp/src
1378    
1379    checkpoint56
1380    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1381    o mnc: cleanup "full" files--fixes out-of-memory problem
1382    o ECCO-GODAE
1383      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1384      * fully merged and updated from SIO code
1385        windstress sign change affects
1386        - exf_inscal_[u/v]stress
1387        - sign of xx_tau[u/v] adjustments
1388        - signs in cost_scat
1389      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1390      * natl_box_adjoint updated and compressed
1391      * 2-level checkpoint switch added
1392        (tested in EXP. 1 of natl_box_adjoint)
1393      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1394    o SVD
1395      * first complete, non-hacked version for SVD calculations
1396      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1397        performed via direct access files admtlm_vector.it????
1398        (via ctrl_[un]pack)
1399      * optimcycle is used for ARPACK iteration counter
1400        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1401      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1402        and add linear transforms where necessary
1403      * controls are initial/final SST, SSS (can be extended; need to check
1404        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1405    o mdsio: filename info to both stderr, stdout
1406    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1407      from sign change
1408    
1409    checkpoint55j_post
1410    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1411      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1412    o add consistent build directories and .cvsignore files to verification
1413    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1414    o make all subroutines 30 or less characters in length for certain older
1415      compilers to work (a thorough search only turns up two routines in
1416      pkg/ptracers)
1417    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1418      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1419    
1420    checkpoint55i_post
1421    o change arrays for total vertical diffusivity (2.D if explicit,
1422      3.D if implicit) ; each ptracer uses its own background value.
1423    o added mnc/NetCDF output capability to ocn_compon_interf
1424      - added bits to verification/cpl_aim+ocn so that it can run on
1425        ITRDA and other clusters without the mpirun "-wd" option
1426    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1427      configuration
1428    o give MNC the ability to create additional files rather than
1429      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1430      - the default is just less than 2GB which is a practical limit
1431        on many systems
1432    o Compute the non-local term using either KPP vertical diffusivity (=default)
1433       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1434    
1435    checkpoint55h_post
1436    o add verification test "vermix"
1437    o remove all the *_ioinc flags and replace with the single global
1438      outputTypesInclusive flag
1439    o allow to set a vertical profile of vertical diffusivity for T & S
1440    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1441    o useMNC moved from data.mnc to data.pkg
1442    
1443    checkpoint55g_post
1444    o Renaming carbon AD experiments to comply with testreport conventions
1445    o Updating adjoint of Held-Suarez hs94.1x64x5
1446    o Fixing directives for non-ECCO forward_step, after ECCO directives
1447      have been fixed to avoid recomp. of do_oceanic_phys
1448      Works well for global_ocean.90x40x15,
1449      but recomp. issue remains for carbon
1450    o Updating adjoint output for natl_box_adjoint after
1451      pkg/ecco has been modified (see taga c55d_post)
1452    
1453    checkpoint55f_post
1454    o rename to timeave_init_fixed
1455    
1456    checkpoint55e_post
1457    o some delicate re-shuffle of store directives to avoid one
1458      extra call of do_oceanic_physics
1459      affects ecco_the_main_loop.F, do_oceanic_physics.F
1460      checkpoint_lev1_directives.h
1461    o NB: this may break global_ocean adjoint temporarily,
1462      but it is clear how to fix it. Will do later, need this now.
1463    
1464    checkpoint55d_post
1465    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1466    o ecco_cost_weights is modified to 1x1 runs
1467    o modifs to allow observations to be read in as
1468      single file or yearly files
1469    o enable to read exf forcing fields as either
1470      single file or yearly files (flag useExfYearlyFields)
1471    checkpoint55d_pre
1472    
1473    o switch between 2-level and 3-level checkpointing
1474    o add ability of MNC to write local and "partial" (eg. 2D slices where
1475      the full 3D field is never actually stored) arrays to NetCDF files
1476      with the correct (that is, the complete multi-dimensional) set of
1477      array indicies
1478      - used in mom_vecinv() to write the diagFreq output
1479      - tested (demonstrated) in verification/aim.5l_cs
1480    o further mnc-ification
1481      - add verification/lab_sea to the list with mnc setups
1482      - fix undefined mnc v-names in cd_code
1483      - add kpp to mnc output (both snapshot and timeave)
1484    o non-hydrostatic code
1485      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1486        in calc_gw.F
1487      - defaults to viscAh
1488      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1489        friction or Leith) in non-hydrostatic mode, as long as there is
1490        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1491    o pkg/cost
1492      extend simple cost functions to treat time mean quantities
1493      (T,U,V) via cost_accumulate_state from cost_tile
1494    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1495        be 2 times larger than the minimum size the advection scheme requires.
1496        now get a perfect conservation of salt in advect_cs test-exp (updated)
1497    o GGL90 (Gaspar's TKE mixed layer)
1498      - add horizontal diffusion of TKE, requires exchanges in
1499        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1500        default. In OPA there is no horizontal diffusion of TKE but the
1501        mixing coefficients are computed from a horizontal average of TKE of
1502        6 points or so. I think that diffusion has a little more physical
1503        justification.
1504      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1505        was in vain)
1506      - mask tke-variable in ggl90_init
1507    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1508    o fix biharmonic diffusion on CS-grid.
1509    o more obcs stuff
1510      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1511        for reading boundary values. This routine is called from
1512        obcs_prescribe_read
1513      - updated obcs_check
1514      - changed sponge layer relaxation parameter units for days to seconds
1515      - turned off sponge layer by default
1516      - changed argument list of OBCS_CALC to myTime+deltaTclock
1517      - fixed about 35 bugs in obcs_external_fields_load
1518    
1519    checkpoint55c_post
1520    o obcs stuff
1521      - new runtime flags useOBCSprescribe, useOBCSbalance
1522      - re-arranged obcs_calc
1523      - moved exf_getobcs to obcs_prescibe_read
1524        obcs_prescibe_read is called after ORLANSKI stuff
1525        and independent of it (executable can contain all).
1526      - updated obcs_check
1527      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1528        These may be necessary only if tangential velocities are
1529        prescribed at OB, not sure, needs testing.
1530    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1531      which simplifies the calls and passes the ifc check-bounds test
1532    
1533    checkpoint55b_post
1534    o add a 2D scalar, Z location, exchange_2 routine.
1535    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1536      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1537      affects advect_cs results (for the wrong reason): update output.txt
1538    o use a more standard discretization for biharmonic viscosity ;
1539     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1540      affects results of dome set-up: update output.txt
1541    o fix gad_advection.F (CubedSphere part), back to version 1.23
1542    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1543    
1544    checkpoint55a_post
1545    o merged code to
1546      * prescribe/read time-dependent open boundaries
1547        (works in conjunction with exf, cal)
1548      * sponge layer code for open boundaries
1549      * each boundary N/S/E/W now has its own CPP option
1550        (healthy for the adjoint)
1551    
1552    checkpoint55
1553    o up-to-date adjoint of previous breaks
1554      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1555      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1556      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1557      - carbon: * remove tr1-related adjoint verification
1558                * add ptracer as control variable
1559    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1560      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1561    
1562    checkpoint54f_post
1563    o in verification/carbin/ remove experiment related to
1564      ALLOW_PASSIVE_TRACER (array tr1 etc)
1565      code_ad/ input_ad/ results_ad
1566    
1567    o add two new packages
1568      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1569        + subject to optimization (memory)
1570      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1571        + subject to reordering (many GOTOs in the original code)
1572        + so far opps is called for every (i,j) point, and then operates in
1573          the vertical; one may want to reorder the scheme in order operate in
1574          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1575          fields)
1576    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1577      - all verification tests compile and run with linux_ia32_g77
1578      - defaults are compatible with current input files--nothing
1579        should change if you were not previously using MNC
1580      - MNC output has been added in numerous places (eg. timeave)
1581        but there are still a few writes not yet do-able with MNC
1582        (this is in progress)
1583      - flags now allow for either/or/both use of MDSIO and MNC and
1584        documentation will soon follow
1585      - numerous small formatting cleanups for ProTeX
1586    o add version info (via BUILD_INFO.h) to MNC and stdout
1587    
1588    checkpoint54e_post
1589    o add two new packages
1590      - pp81 (Packanowski and Philander, 1981), Richardson number and
1591        stratification dependent mixing
1592      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1593      - these scheme operate in a similar manner as KPP (without ghat, of
1594        course), however there is only one diffusivity that is used for both
1595        temperature and salinity (and passive tracers)ç
1596    o add offline package
1597    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1598      provided by Stephanie Dutkiewicz
1599    o genmake2: add ability to search for C compilers and cleanup test output
1600      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1601    
1602    checkpoint54d_post
1603    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1604    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1605      leading to additional shift by 5 days each year of integration
1606       (i.e. leading to considerable offset over the years)
1607    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1608    o start with no AB and no initial filtering (staggerTimeStep):
1609      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1610    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1611      (external loading & cpl import/export stay in forward_step.F)
1612    o update coupling interface to work with new staggerTimeStep
1613    o change MDSIO ptracers_pickup.
1614    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1615    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1616    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1617    
1618    checkpoint54c_post
1619    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1620      this affects (truncation error) output.txt of test-exp:
1621       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1622    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1623    o change Qnet to always be the net heat flux, (+upward).
1624      affects (truncation error) output of natl_box exp.: updated
1625    o define the max number of passive tracers in PTRACERS_SIZE.h
1626    o start to test mnc routinely in exp0
1627    o add sea-ice loading (sIceLoad) as a new forcing field.
1628    
1629    checkpoint54b_post
1630    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1631       impressive on Altix and Opteron systems)
1632    o diagnostics can now write NetCDF files through the mnc package
1633    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1634    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1635    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1636      affects (truncation error) output of lab_sea & natl_box exp.: updated
1637    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1638    
1639    checkpoint54a_post
1640    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1641    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1642    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1643    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1644      + internal_wave (shift in writing cg2d_ini_res)
1645    checkpoint54a_pre
1646    
1647    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1648      - modified verification/lab_sea and natl_box_adjoint accordingly
1649    
1650    checkpoint54
1651    checkpoint53g_post
1652    o prepare splitting of thermodynamics: store convect.counter in common block
1653    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1654      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1655    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1656    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1657    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1658    o restore adjointability
1659    
1660    checkpoint53f_post
1661    o modifications that affect AIM experiment results (update output.txt):
1662      - no advection of S at top interface Nr (pkg/generic_advdiff)
1663      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1664    o AIM pkg:
1665      - include stability function into surf.Flux derivative relative to Tsurf
1666      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1667    
1668    checkpoint53e_post
1669    o merged cylindrical coord configuration
1670    o added rotating_tank experiment
1671    checkpoint53e_pre
1672    
1673    checkpoint53d_post
1674    o faulks upgraded: re-generate output.txt that have changed:
1675       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1676    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1677    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1678    o added Sadourny discretization of Coriolis
1679      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1680      - re-enabled use of omega3 (useAbsVorticity)
1681    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1682      vector-invariant equations
1683      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1684    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1685      hopefully without new bugs
1686      - still to do: biharmonic friction for non-hydrostatic w
1687    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1688    o regenerated output for global_ocean_ebm (using -ieee)
1689    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1690      of mom_common/
1691      - simple re-arrangement of instructions within computing loop
1692    checkpoint53d_pre
1693    
1694    checkpoint53c_post
1695    o new version of coupler for AIM+thSIce and Ocean models
1696     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1697     - land: change Evaporation of snow
1698     - aim with thSIce: fix bug in snow-precip.
1699    o changes to calc_gw.F
1700     - bug fix for w^2 term near the bottom boundary
1701     - (hopefully) improve the lateral slip boundary condtions for use with
1702        partial/looped cells
1703      - because the bug fix changes two verification experiments anyway (exp5
1704        and plume on slope), change the lateral boundary condition from half slip
1705        to the value of no_slip_sides
1706    o ebm package wasnt quite up to the parallel task. Fixed that.
1707    o Adjoint of EBM package + verification
1708      * TLM OK
1709      * ADM not sufficient accuracy yet (needs further testing)
1710    
1711    checkpoint53b_post
1712    o Commiting new energy balance model to repository
1713      * package is pkg/ebm
1714      * verif. is verification/global_ocean_ebm
1715      * references are in ebm_driver.F
1716    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1717    C        Global thermohaline circulation. Part I:
1718    C        Sensitivity to atmospheric moisture transport.
1719    C        J. Climate 12(1), 71-82
1720    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1721    C        Global thermohaline circulation. Part II:
1722    C        Sensitivity with interactive transport.
1723    C        J. Climate 12(1), 83-91
1724    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1725    C        Destabilization of the thermohaline circulation
1726    C        by atmospheric eddy transports.
1727    C        J. Climate 7(12), 1870-1882
1728    o Will need long integration testing.
1729    checkpoint53b_pre
1730    
1731    o created pkg/mom_common in preparation for variable viscosity code
1732    o renamed and split ini_mnc_io
1733    o pkg/land: only liquid water can diffuse or run-off
1734    o AIM using land: soil wetness availability account for snow
1735    o added printMapIncludesZeros to EEPARMS namelist
1736    
1737    checkpoint53a_post
1738    o restore TAMC compatiility for exf_constants.h
1739      (no usage of _d in .h)
1740    o Additional storing in KPP in an attempt to fix
1741      TAMC problem with adjoint of KPP code.
1742      (no success...)
1743      Identical code works fine with TAF.
1744    o Fixed verification/natl_box_adjoint experiments.
1745      Initial conditions for Experiments 4 and 5 are now
1746      set to "SEAICE_initialHEFF=0", which is more reasonable,
1747      and hence gives results closer to that of Experiment 2.
1748      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1749    
1750    checkpoint53
1751    o stable checkpoint with up to date adjoint
1752      TLM tests only run for 1st grdchk at the moment. Its unclear if
1753      this is a code problem or a problem with resetting code for g_
1754      variables that is being autogenerated wrong.
1755      Otherwise:
1756       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1757       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1758         are both still in chaos following their security messes.
1759    
1760    checkpoint52n_post
1761    o various build (mostly genmake2) changes including:
1762      - ability to build/run more easily within Cygwin and MacOS X
1763      - more complicated Makefiles with a stronger dependence on Gnu Make
1764    o pkg/seaice modifications
1765      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1766        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1767        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1768      - changed proxy for geostrophic velocity and updated
1769        verification/lab_sea/results/* accordingly
1770      - removed ADI dynamic solver from pkg/seaice
1771      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1772        they caused a segmentation fault under certain circumstances
1773      - removed unused field WATR
1774    o bug fix in exf-package:
1775      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1776         now reflect that.
1777    o small fixes in the cal-package:
1778      - set reference date to first of January for the 'model'-calendar
1779      - failing of cal_CheckDate in cal_FullDate now actually results in a
1780        warning
1781    o small modifications in exf-package to increase flexibility:
1782      - change climtempfreeze from a constant to a runtime parameter that
1783        is specified in data.exf_clim (default = -1.9)
1784      - introduce runtime parameter windstressmax (default = 2.0) that is
1785        specified in data.exf
1786    o fix in pkg/thsice:
1787      - update Evap (Tsf changes) to be consistent with Latent heat flux
1788      - maintain snow precipitation unchanged (even if Tsf >=0).
1789     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1790    
1791    checkpoint52m_post
1792    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1793      this does not change any of the results, because myIter=0 in swfrac always
1794      lead to jwtype=2 (the default anyway), but the call makes little sense
1795      as a default
1796    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1797    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1798      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1799    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1800    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1801    o extending useSingleCpuIO option to work with new exch2 I/O format
1802      - old-style, missing-tile I/O is still accessible by defining CPP
1803        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1804    o monitor package can write to NetCDF files and/or STDOUT
1805    o fix re-definition bug in MNC_GRID_INIT_ALL()
1806    o doc/api_reference added
1807      - a framework for building an API Reference Manual using all
1808        the "protex" comments embedded in the code
1809      - see pkg/generic_advdiff, pkg/mnc for examples
1810    o MNC:
1811      - make myThid the last argument for all subroutines
1812      - new default for the grid files: NO halos
1813      - add useMNC and other run-time flags
1814      - separate per-file-group handling of the unlimited dimension
1815      - early initialization of MNC w/ flags read at the eeboot stage
1816        and lookup tables set in initialize_fixed
1817      - write all MNC output to a freshly-created directory
1818    o thermodynamics sea-ice (thsice) is now tested with testreport.
1819    o test exp. advect_cs: use the standard cs32 grid ; update output.
1820    o Added functionality to grdchk:
1821      pick global i,j,k position (or nearest wet) where to perform check.
1822    
1823    checkpoint52l_post
1824    o new land formulation:
1825      a) use ground enthalpy as prognostic variable to ensure exact
1826         energy conservation.
1827      b) account for water temperature and for latent heat of freezing
1828         in all processes (rain, run-off, ground storage)
1829      c) compute surface and ground temperature implicitly.
1830    o aim_v23 modification for new land model:
1831      a) Treat separately land / ocean / sea-ice surface fluxes
1832         to allow implicit computation of land & sea-ice surface temp.
1833      b) add snow precipitation.
1834    checkpoint52l_pre
1835    
1836    o fix problem (when 1 tile is empty) in min/max monitor.
1837    o fix bug in timeAve (u,vZetatave in common block)
1838    o no restoring terms under ice for pkg/seaice
1839    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1840    o bug fix for pkg/seaice pickups
1841    o change MNC call locations and add coordinate attributes
1842    o mask vorticity at the corner ; affects global_ocean.cs output
1843    o fix ini_curvilinear_grid ; test CS experiments with mpi
1844    o aim.5l_cs: modify sea-ice fraction input file ; update output
1845    o exf: Adding simple range check routine for exf fields after read
1846    
1847    checkpoint52k_post
1848    o removed top-level directory "diags"
1849      - we migrated these functions to pkg/timeave a long time ago
1850    o fixed bug introduced in pkg/monitor
1851    o accuracy ctrlprec = 32 insuffient for gradient checks using
1852      averaged fields (I/O via cost_averages)
1853      -> use ctrl.h in active_file*.F to control I/O precision.
1854    o paramter list of CALL ADTHE_MAIN_LOOP
1855    o added initial do_the_model_io to ecco
1856    o set all ...Freq to zero after cost_final
1857      taveFreq, dumpFreq, pChkptFreq
1858    o MAIN and ECCO differentiability restored
1859    
1860    checkpoint52j_post
1861    o fix nchklev in tamc.h for global_ocean...
1862    o Bringing flow and store directives up-to-date
1863    o Really weird thing!
1864      call do_the_model_io from the_main_loop with parameters
1865      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1866      TAF places a faulty re-call of initialise_varia
1867      after cost_final call which should not be there!
1868    checkpoint52j_pre
1869    
1870    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1871      error messages
1872    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1873    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1874      debug output
1875    o modfied mdsio_writefield.F to handle non-global files under exch2
1876    o update AIM Cubed-Sphere exp (aim.5l_cs):
1877      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1878    o update AIM Equatorial Channel exp:
1879      use standard aim_v23 pkg and change the SST fields to be more realistic.
1880    o globalFile now works with exch2
1881    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1882      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1883    o limit timeave output for hi-res integrations
1884    
1885    checkpoint52i_post
1886    o removed CPP_EEOPTIONS.h from verification/*/code
1887    o updated the tiling for global_ocean_pressure
1888    checkpoint52i_pre
1889    
1890    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1891      the old pkg/aim).
1892    
1893    checkpoint52h_pre
1894    o shortened offending lines in exch2_send_rx?.template
1895    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1896    o genmake2: add build & execute test for NetCDF code
1897    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1898      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1899    o added useSingleCPUIO flag to monitor.F and mon_out.F
1900    o added temporary hack for sea-ice dynamics on the cube:
1901      metric terms are ignored and it is assumed that
1902      there is no sea-ice on cube faces 1, 2, 4, and 5.
1903    
1904    checkpoint52f_post
1905    o added exch2 cube routines to pkg/exch2
1906    o modified hs94.cs-32x32x5 to use it
1907    o added new grid files to hs94.cs-32x32x5
1908    checkpoint52f_pre
1909    
1910    checkpoint52e_post
1911    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1912      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1913    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1914      to work with implicit vertical advection and AB ;
1915    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1916    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1917     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1918    checkpoint52e_pre
1919    
1920    o fix bug in impldiff when Nr=1 or Nr=2.
1921    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1922    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1923    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1924      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1925    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1926    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1927    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1928    
1929    checkpoint52d_post
1930    o re-tiled many expts to allow comparison in multi-processor mode
1931      - updated output accordingly
1932      - changed hs94.128x64x5 to use intial T from file rather than use the
1933        random number generator
1934    o add infrastructure in model routines for fizhi and gridalt packages
1935    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1936    o changes to permit hi-res, cubed-sphere, configuration
1937      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1938      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1939      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1940        of surface winds for the cube
1941      (A verification experiment, based on global_ocean.cs32x15, but with
1942       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1943       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1944       complete with example surface forcing files and matlab scripts to look
1945       at the output and compare it with that of global_ocean.cs32x15.)
1946    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1947       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1948       to conform to the common rule.
1949    o check-in the first version of the coupler + interfaces for multi-components
1950       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1951       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1952       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1953       - ocean and atmos. share the same horizontal grid (no interpolation).
1954       - exchanges between component and coupler is done in forward_step
1955    o new verification experiment, cpl_aim+ocn:
1956       coupled ocean - AIM atmosphere on cs32 grid.
1957    
1958    checkpoint52d_pre
1959    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1960    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1961    
1962    checkpoint52c_post
1963    o Fixing OPTIONS files for use of exf:
1964      - ALLOW_ECCO not needed
1965      - ECCO_CPPOPTIONS.h should not be included from
1966        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1967        as has been the case in the past
1968      - All cal/exf related options are currently set in
1969        single header file. Should remain so until we
1970        agree on a consistent new policy.
1971    o Removed all CPP options for cal package.
1972      cal has no more CPP options.
1973    o modified STOREs in GAD_ADVECTION
1974    o corrected key comp. for passkey
1975    
1976    checkpoint52b_post
1977    o new version: "thsice" of thermodynamic sea-ice pkg:
1978     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1979     - modify fluxes but do not change theta directly;
1980     - light cleaning of bulk_force pkg (still needed with thsice).
1981     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1982       + output_thsice.txt to test thsice & bulk_force pkgs.
1983    o put back grid & coriolis monitor output.
1984    checkpoint52b_pre
1985    
1986    o call "do_the_model_io" at the beginning (=> dump initial state)
1987    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1988    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1989      (need info on NUMBER_OF_PTRACERS)
1990    o missing PTRACERS headers in some routines
1991    o default tamc.h in pkg/autodiff supposed to crash
1992      to ensure proper customization
1993    
1994    checkpoint52a_post
1995    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1996      - moved surfaceTendencyTice from pkg/seaice to main code
1997      - subroutine FREEZE_SURFACE now limits only surface temperature
1998        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1999        => new output.txt for global_ocean.cs32x15 & global_with_exf
2000      - keep the old version of FREEZE for backward compatibility;
2001        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2002      - corresponding modifs for TAF directives
2003    o added surface flux output variables to TIMEAVE_STATVARS
2004    o time-averaged output for pkg/ptracers
2005    o fix problem with ECCO-related divided adjoint
2006      snapshot file was missing some ad-variables,
2007      but no warning issued by TAF
2008    
2009    checkpoint52a_pre
2010    o some bug fixes for #undef REAL4_IS_SLOW
2011    
2012    checkpoint52 = ecco_c52_e35
2013    o after testing adjoints of checkpoint51u_post
2014    
2015    checkpoint51u_post
2016    o this is the post-merge tag of the ecco-branch
2017      (needs another clean checkout and re-testing)
2018    o various natl_box_adjoint configs and results
2019      but no input fields
2020    o obcs adjoint not yet merged!
2021    o adding ECCO global 1x1 and 2x2 degree configs
2022    o updated/extended some store directives for seaice
2023    o pkg/ecco now containes ecco-specific part of cost function
2024    o top level routines the_main_loop, forward_step
2025      supersede those in model/src/
2026      previous input data.cost now in data.ecco
2027      (new namelist ecco_cost_nml)
2028    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2029    
2030    checkpoint51t_post
2031    o this is the pre-merge tag of the ecco-branch
2032    
2033    checkpoint51s_post
2034    o cleanup: removed various obsolete #define-s
2035    o pkg/grdchk
2036      - renamed 'ph-grd 3' to 'grad-res'
2037      - merged from ecco-branch
2038        (remaining bug fixes for obcs gradient checks)
2039      - additional high-precision output for testreport
2040        (grep for 'precision_grdchk_result')
2041    
2042    checkpoint51r_post
2043    o cleaned up or removed CPP_OPTIONS.h files
2044    o updated results for some of the tests to reflect the new
2045      optfiles (-ieee: -O0 instead of -O3)
2046    
2047    checkpoint51q_post
2048    o cd_code:
2049      - moved cd_scheme.F -> cd_code_scheme.F
2050      - separate read_checkpoint from cd_code_ini_vars.F
2051      - separated cd_code part from write_checkpoint
2052      - updated AD_SOURCE, generated .flow
2053      - added CD_CODE_VARS.h to the_main_loop
2054      - Moving cd_code specific store dir.s to pkg/cd_code
2055    o ctrl package totally restructured
2056      - pack/unpack now optional and decoupled from
2057        xx_/adxx_ I/O
2058      - ctrl_pack/unpack cleaned
2059        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2060      - confined inclusion of AD_CONFIG.h to where necessary.
2061    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2062    
2063    checkpoint51p_post
2064    o create initial cd_code package
2065      - WARNING: the initialization of fields within packages
2066        is broken because INI_FIELDS (where READ_CHECKPOINT is
2067        called) is called *before* PACKAGES_INIT_VARIABLES.
2068        This seems to be backwards since
2069        1) its important to initially zero the entire field including
2070           the "halo" region
2071        2) zeroing needs to be done *before* reading pickup info
2072           and the pickup call might or might not happen in any
2073           particular run
2074      - this needs an overhaul for R2
2075    o cleanup verification/*/code/GMREDI_OPTIONS.h
2076    o cleanup testreport
2077    
2078    checkpoint51o_post
2079    o bringing AD-related verif's up to date with genmake2
2080      - carbon/
2081      - global_ocean.90x40x15/
2082      - hs.94.1x64x5/
2083      - (front_relax/ )
2084    o (more) consistent directory structure for AD-related verif.'s
2085    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2086    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2087    o bug fix in find_alpha.F for MDJWF:
2088      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2089        change rho -> rho-rhoConst
2090      - replace call find_rho to find_rhonum
2091    o initialisation of rFlx extended to full array (required by TAF)
2092      and shifted to thermodynamics
2093    o removed PTRACERS.h in ptracers routine
2094    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2095    o Correcting initialisations for fVerU, fVerV.
2096    o helping TAF to recognize dependency on kUp for
2097      fVerU, fVerV
2098    o Replacing delZ by delR in pkg/ctrl/
2099    checkpoint51o_pre
2100    
2101    o undid all of cp51 pending some cleanups and discussion
2102    o added the [#include "AD_CONFIG.h"] statement to all files that need
2103       it for adjoint/tl #defines
2104     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2105     o removed tools/genmake since it no longer works
2106    
2107    checkpoint51n_post
2108    o modifications to make FREEZE flux visible to pkg/kpp
2109      - moved surfaceTendencyTice from pkg/seaice to main code
2110      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2111      - subroutine FREEZE now limits only surface temperature
2112        (this means new output.txt for global_ocean.90x40x15,
2113         global_ocean.cs32x15, and global_with_exf)
2114    o added surface flux output variables to TIMEAVE_STATVARS
2115    
2116    checkpoint51n_pre
2117  o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F  o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2118  o added [#include "AD_CONFIG.h"] to all files that use the following  o added [#include "AD_CONFIG.h"] to all files that use the following
2119    defines:    defines:

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