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revision 1.163 by jmc, Thu Jun 12 21:25:24 2003 UTC revision 1.812 by heimbach, Thu May 10 16:55:58 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
8    o pkg/exf: some cleaning-up:
9      - change various "constants" into runtime parameters
10      - cleaned-up Large&Yeager04 routine which should eventually
11        replace exf_bulkformulae.F (changed names of S/R and CPP)
12        and merged various ALLOW_ATM_WIND options
13     only used with thsice pkg (in thsice_get_exf.F):
14      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
15        which are used when useStabilityFct_overIce=TRUE (= the default)
16      - change default values of ice & snow emissivity and scale downward LW
17        by ice & snow emissivity.
18    o pkg/thsice:
19     fix few little problems, in thsice_calc_thickn.F:
20      - growth vertically (and not laterally) if iceFrac == iceMaskMax
21      - melt laterally only if hIce < hThinIce (as the comments say)
22      and in thsice_extend.F:
23      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
24      - start to form ice as soon as the minimum ice-volume is reachable.
25     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
26      and cpl_aim+ocn
27    o pkg/kpp
28     - move computation of surface related input fields to KPP into a new
29       subroutine kpp_forcing_surf.F
30     - remove wrong (within bi,bj loops) EXCH calls.
31     - little cleaning (add argument myThid in last position, cvs header ...)
32     - for now, fix conservation problem by exchanging KPPviscAz (may not
33       be the best fix)
34    o pkg/seaice
35     - check for inconsistent evp parameter/cpp-flag combination
36     - remove leftover errIO flat for obsolete name list error handling
37    o OpenAD
38     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
39    
40    checkpoint59a
41    o pkg/seaice: some parameter clarifications and a little bit of clean up
42    o pkg/thsice: rename run-time parameters:
43       himin       -> hIceMin
44       himin0      -> hThinIce
45       hihig       -> hThickIce
46       i0          -> i0swFrac
47       transCoef   -> bMeltCoef
48       frac_energy -> fracMelting
49      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
50       with default values (for now) that do not change the results.
51      remove old version of thsice vars advection in pkg/seaice.
52    o in FFIELDS.h:
53      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
54      - make pLoad & sIceLoad always available (but still only used if
55         ATMOSPHERIC_LOADING is #define).
56    o pkg/kpp: replaced _KPP_RL with _RL
57    o bug fixes for vertical diffusivity computations when both KPP and
58        3D diffusivity arrays are used.
59    o pkg/seaice: fix bug in evp solver, while doing that
60      - change (improve?) discretization of stress computations for both
61        cgrid-lsr and evp solver
62      - add a new routine to compute strain rates
63      - the above changes lab_sea results
64      - add no slip conditions for evp solver (off by default), lsr-version
65        may follow
66      - fix exchange for shear at Z-points (does not change lab_sea)
67      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
68        (to force the user to pick a time step since there is not "safe" way
69        of choosing it)
70      - add principal stress diagnostics
71      - rearrange fields for evp a little to avoid having to call a: too many
72        exchanges and b: exchanges for stress trensor components which we do
73        not have.
74      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
75        of evp, complete rewrite for lsr case (latter is does not yet work
76        in all cases)
77    o pkg/kpp: add code to have mixing in shelf ice caverns
78      - add myThid to all kpp routines (long overdue)
79    
80    checkpoint59
81    o pkg/exf:
82      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
83        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
84      - move exf header files from lower_case.h to UPPER_CASE.h ;
85        add missing cvs Header & Name
86      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
87      - add namelist param. selectStressGridPosition, exf_monFreq
88      - retire many _CLIM routines, and remove data.exf_clim
89        + params moved to data.exf
90        + climsst, climsss now handled by exf_set_gen, i.e.
91          climss?period=0 refers to constant field,
92          climss?period=-12 to monthly forcing
93      - split up namelists in data.exf
94    o pkg/seaice:
95      - remove seaice_exch and seaice_exch_uv
96      - remove superfluous exchange of theta
97      - add myThid to seaice_budget_ocean/ice
98      - add new interface for atmospheric wind forcing (C-grid only)
99        + new routine
100        + two new field (taux, tauy for stress over ice)
101        + removed one global field (DAIRN) for C-grid case only
102    o pkg/thsise
103      - 2nd set of modifs for thsice adjoint in conjunction with exf
104    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
105    
106    checkpoint58y_post
107    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
108      vertical diffusivity, similar to that in MOM4; turned on using
109      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
110      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
111    o Added capability for 3D specification of background vertical diffusion
112      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
113      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
114      "data" file that contains the 3D vertical diffusivity coefficients.
115    o ice dynamics (pkg/seaice) with thsice thermodynamics:
116      - add code within pkg thsice to advect & diffuse sea-ice fields
117      similar to (and will replace) what has been added in  seaice_advdiff.F,
118      but: - conserving Mass, Heat & Salt.
119           - better when using non-linear advection scheme (not yet fully tested)
120           - can also be used in atmospheric set-up (for now, only the diffusion).
121    
122    checkpoint58x_post
123    o IO option for global-file compact format:
124      - add options when generating topology (utils/exch2/matlab-topology-generator)
125      - add I/O capability (pkg/mdsio).
126      - adapt utils/matlab/rdmds.m to read this format.
127      for now long-line format not yet supported by pkg/mdsio (& exch2).
128    o shelfice: add a few diagnostics
129    
130    checkpoint58w_post
131    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
132      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
133      (and replace horiVertRatio in NH code).
134      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
135                         and tutorial_plume_on_slope (sensitive to truncation)
136    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
137      directly to drive seaice model (C-grid only)
138    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
139     - reintroduce computation of wind from stress,
140     - compute tau (in exf_bulkformulae.F) from windstress averaged to
141       mass points to avoid tau = 0
142     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
143    o rdmnc.m: make it work with "global" files created with gluemnc
144    o rdmnc.m : some improvements in dealing with singleton dimension
145      (tested on all testreport mnc output files).
146    o genmake2: disable pkg/profiles if netcdf test fails.
147    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
148    o move call to cal_readparms up to make calendar parameters/variable available
149      to all packages
150    
151    checkpoint58v_post
152    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
153      useDynP_inEos_Zc tested.
154    o pkg/exf: changes to properly interpolate/mask/scale initial fields
155    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
156      and portions thereof.  See read_cs.txt for description and examples.
157    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
158      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
159      following the great-circle arc between those 2 points.
160    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
161      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
162    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
163     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
164     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
165     - still needs work (not working with some options ; efficiency to improve)
166       and serious testing.
167     - use this scheme for temperature & salinity in 2 advection test exp.:
168       advect_xy & advect_xz, respectively.
169    
170    checkpoint58u_post
171    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
172    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
173    o testreport: add option "-skipdir" to skip some test.
174    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
175      momentum calculation.
176    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
177    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
178      remove checkpoint.F and the_correction_step.F (no longer used);
179      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
180    o add option (linFSConserveTr) to correct for tracer source/sink due to
181      Linear Free surface
182    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
183    o pkg/thsice: fix reading mnc-pickups
184    
185    checkpoint58t_post
186    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
187    o pkg/mdsio:
188     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
189       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
190       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
191     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
192     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
193       either MDS_READ_FIELD or MDS_WRITE_FIELD )
194     - new S/R (to replace MDSWRITEMETA), which allows to write more
195       informations (variable names, time ...) to meta files.
196     - modify rdmds.m to give back the meta file content.
197    o pkg/diagnostics: change vertical interpolation to be safer, and more
198       flexible (define p-levels to interpolate to in data.diagnostics);
199      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
200       diagnostic pointer.
201    o pkg/seaice: more cleaning up of seaice_growth, added many comments
202    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
203    o fix multi-category seaice:
204     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
205       SEAICE_MULTICATEGORY
206     - fix short wave heat flux
207    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
208       and allow to use EVP solver. Change forward lab_sea: test both EVP
209       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
210    o Initial check-in of lab_sea adjoint
211      (very similar to natl_box_adjoint/code_seaice)
212      * used C-grid and EVP solver
213      * used KPP, GM/Redi
214      * uses inAdExact=.TRUE.
215      * gradient checks fail for both ADM and TLM
216        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
217        f.d. gradients actually seem more problematic than ADM, TLM gradients;
218        issue is related to forward mismatch between g77 an ifort
219    o pkg/seaice: overhaul of thermodynamics
220     - growth.F and groatb.F are replaced by new routine seaice_growth.F
221     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
222     - move a few global fields out of SEAICE.h into seaice_growth.F and
223       make them 2D (FICE/QNETO/ ...)
224     - remove FO (it is the same as QNETO)
225     - introduce a few local fields to avoid modifying external fields such
226       as atemp, etc.
227    
228    checkpoint58s_post
229    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
230      changed exf_set_gen.F so that
231        genperiod=0 means input file is one time-constant field and
232        genperiod=-12 means input file contains 12 monthly means
233    o CG2D: use pre-computed solver main-diagonal (stored in common block);
234      this affects truncation error ; generate new output file for exp. which
235      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
236        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
237        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
238        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
239        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
240        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
241    o start implementation of deep-atmosphere and anelastic formulation
242    o verification: remove 2nd copy of input files and use script "prepare_run"
243      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
244    o mom_common/vecinv/fluxform: fix a few initialisation isssues
245    o profiles: fix for multithreaded case
246    
247    o diagnostics: rename few diags:
248      s/'PRESSURE'/'RCENTER '/g
249      s/'TICE    '/'oceFreez'/g
250      s/'TAUX    '/'oceTAUX '/g
251      s/'TAUY    '/'oceTAUY '/g
252      s/'SWFLUX  '/'oceQsw  '/g
253      s/DIFx/DFxE/g
254      s/DIFy/DFyE/g
255      and add few ocean-forcing diagnostics:
256      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
257    o modifications to pkg/seaice/growth.F and budget.F, which change results of
258      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
259      as actual snow thickness.  It now refers everywhere to effective snow
260      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
261    
262    checkpoint58r_post
263    o modifications to pkg/seaice/growth.F, which change results of
264      lab_sea experiment: fixes pertain to melting snow over open water, to
265      masking EVAP under sea ice, and to using the correct AREA variable for
266      computations of EVAP, PRECIP, HSNOW, and GHEFF
267    o add ability to read bathy, salt, and theta using MNC (off by def)
268    o add flooding algorithm and advection of HSNOW for pkg/seaice;
269      both are turned off by default and do no change any results
270    o seaice advection with pkg/thsice: a step toward the use of non-linear
271      advection scheme, but #ifdef or commented out for now (requires more EXCH).
272    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
273      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
274      in natl_box (affects results @ truncation level: update output.txt)
275    o multi-threading and IO:
276      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
277      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
278        (needed to work with SingleCpuIO): tested in all verif. exp.
279    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
280      affects the results (but none of the verification test uses this scheme).
281    o Adding some pkg/diagnostics capability to pkg/seaice
282      (will certainly be subject to changes)
283    o ctrl: adding new control variables:
284      lwflux, lwdown, evap, snowprecip, apressure, runoff
285    
286    checkpoint58q_post
287    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
288      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
289      high_res_cube configuration by 4% on Columbia.
290    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
291      add (in global_with_exf/code) a version of EXF_INTERP_READ without
292      dynamical allocation (seems to work in multi-threaded).
293    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
294      single CPU io) so that TAF does not have to see EESUPPORT.h
295    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
296    
297    checkpoint58p_post
298    o obcs: stop if obcs is used with useCDscheme = .true.
299    o shelfice:
300     - fix a sign error so that no slip at shelfice interface works
301     - remove stop for combination non-hydrostatic code and shelfice. That does
302       not mean, that the results are correct, but at least they are numerically
303       stable
304    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
305    o added adjoint exch routined for all exch*3d* routines
306      and updated flow directives
307    
308    checkpoint58o_post
309    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
310      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
311    o change controling S/R for writing pickup file (new S/R do_write_pickup)
312      and clean-up reading/writing of pickup files.
313    o fix local version of read/write pickup (NH part) in rotating_tank/code
314    o simplify EXCH interface:
315     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
316     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
317    o added the regrid package
318    o shelfice:
319     - add a simple boundary layer scheme to reduce noise
320     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
321    
322    checkpoint58n_post
323    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
324       local variable (not in common block).
325    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
326      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
327      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
328        to work with SingleCpuIO.
329    o add "_d 0" to real constant of pkg/cfc subroutines ;
330       update exp. cfc_exemple & tutorial_cfc_offline output files.
331    o multi-threading and IO:
332      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
333        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
334      - barrier before and after reading.
335      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
336      - avoid using MDS_WRITELOCAL for LAND pkg output.
337      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
338        common-block variables ; Allows multi-threading with master-thread IO.
339    o change default MAX_NO_THREADS from 32 to 4 ;
340      and stop cleanly when MAX_NO_THREADS is too small.
341    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
342    
343    checkpoint58m_post
344    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
345       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
346    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
347       keep global_ocean.90x40x15 (for AD testing) with former secondary test
348       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
349    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
350        add MITgcm_tutorials (= code + all the tutorials)
351    o ecco, option to compute cost for total ssh (mean+anom)
352    o consistent with addition of ptracer and ssh in pkg/profiles
353    o profiles: adding ptracer and ssh
354    o testreport: change multi-test output-file name
355      (from output.txt.{name} to output.{name}.txt)
356    o profiles: now ok for mutli-tiles case
357    o seaice: add 4 parameters for different advection schemes for area,
358      (effective) seaice thickness, enthalphy, and snow height. Their default
359      is the standard parameter SEAICEadvScheme
360    o calc_gw:
361     - add cosFacU in zonal viscous flux (harmonic.visc.).
362     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
363       of tutorial_plume_on_slope.
364    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
365    o calc_gw: true flux-form, account for horizontal grid spacing.
366      update rotating_tank results, but not plume_on_slope (affected at
367      truncation level, 11 digits).
368    
369    checkpoint58l_post
370    o calc_gw:
371     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
372     - remove side-drag for now (need to fix it); update plume_on_slope results.
373     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
374    o commit code to make SST/SSS weights spatially variable
375      (based on either variable in-situ or variable initial T/S weights)
376    o pkg/ecco:
377      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
378        now based on horizontally varying weights wthetaLev, wsaltLev
379      * cost_averagesflags now returns year indices in addition to day, month
380      * sflux balance is performed on annual basis
381        (sflxumm, sfluxmm2, bal_sfluxmm)
382      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
383        including separate counting and multipliers
384    o pkg/rbcs
385      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
386    
387    checkpoint58k_post
388    o testreport:
389     - always build in dir. "build" (if not there, mkdir build instead of building
390       & running in input)
391     - run in dir run (if it exists), in build otherwise.
392     - call prepare_run (if input/prepare_run exists)
393     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
394    o pkg/exf modifications to interpolation and rotation routines for more
395       reasonable treatment of North Pole singularity: for tracers North Pole
396       value is set to northernmost zonal-mean value, for zonal velocity it is
397       set to zero, and for meridional velocity it is set to northernmost value.
398    o pkg/exf/exf_check_range.F
399     - add tile index to diagnostics and move stop statement to the very
400       end of the routine.
401    o pkg/diagnostics: (diagnostics_main_init.F)
402      define title of isomorphic variables according to the current config.
403    o pkg/thsice with pkg/seaice dynamics:
404    - fix domain of computation (interior only, required for exf) and do exchanges
405    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
406    o towards a standard way of dealing with multi-threading in MONITOR
407      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
408    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
409       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
410    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
411    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
412    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
413       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
414    o tracer advection:
415     - clean-up and simplify calc_common_factors.F
416     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
417       advection subroutine (but still not used within DST advection S/R)
418    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
419    
420    checkpoint58j_post
421    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
422      from file (collects calls previously in FORWARD_STEP)
423    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
424    o adjoint store dir. adjusted accordingly
425    o genmake2
426      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
427    
428    checkpoint58i_post
429    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
430      on wind stress (SEAICEstressFactor defaults to 1.)
431    o Total number of Timers is finite (<=40): comment out 2 non-essential one
432      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
433    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
434      on CS-grid: no longer loosing mass.
435    o exf & curvilinear-grid: no longer modify longitude xC & xG.
436    o pkg/ggl90: fix sloppy output and fix a bug
437    o pkg/seaice: added SEAICEuseEVPpickup parameter
438      - Set to false in order to start EVP solver with
439        non-EVP pickup files when using SEAICEuseEVP
440      - fix sign error in diffusion in seaice_calc_rhs
441    
442    checkpoint58h_post
443    * Modifications for bottom topography control
444      o replace hFacC by _hFacC at various places
445      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
446      o add non-self-adjoint cg2d_nsa
447      o update autodiff support routines
448      o re-initialise hfac after ctrl_depth_ini
449      o works for 5x5 box, doesnt work for global_ocean.90x40x15
450    * Adding verification for 5x5 box (4-layer) bottom topography control
451    
452    checkpoint58g_post
453    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
454       used for mean seasonal cycle, mean diurnal cycle); add an example
455       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
456    o pkg/ggl90:
457      - add parameter (minimum surface kinetic energy)
458      - fix bug (avoiding division by zero)
459    o couple pkg/thsice to pkg/seaice:
460      - modify advection in seaice to accomodate new scalar fields to be advected
461      - only muliDimAdection scheme work with seaice/thsice
462      - mapping of thsice-variables to seaice-variables, back and forth
463      - does not break the verification experiments, but does not give the
464        desired results either
465    o pkg/seaice
466      - make (default) second order advection a bit less confusing?
467    
468    checkpoint58f_post
469    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
470      to pkg/seaice):
471      - new routines thsice_map_exf and thsice_get_exf provide the interface
472      - add an additional formal parameter to thsice_solve4temp
473    o pkg/exf:
474      - add new fields wspeed, snowprecip (to be able to couple to thsice)
475      - correct Stefan-Boltzmann constant
476      - new parameter for longwave surface emittance
477      - separate some stuff from exf_bulkformulae into new routines  
478        exf_radiation, exf_wind
479      - add new parameters and constants: longwave emissivity for ocean, ice
480        and snow, evaporation parameters over ice
481      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
482        either wind from stress or stress from wind
483    o pkg/thSIce:
484    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
485    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
486       and THSICE_CALC_THICKN
487    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
488    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
489      to make debugging easier.
490    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
491    o pkg/bulk_force:
492      - clean-up comments and parameters ;
493      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
494    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
495      generate new output for test-experiment: aim.5l_cs.thSI
496    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
497      testreport accordingly
498    
499    checkpoint58e_post
500    o SEAICE_CGRID adjoint done
501    o R_STAR adjoint implemented.
502      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
503      * need to sort out init. of h0facc, etc.
504    o Make pkg/profile fully independent of ecco,cost, etc. stuff
505      to be able to use it in pure forward.
506    
507    checkpoint58d_post
508    o upgrade simple test-experiment to tutorial example:
509     step.1: duplicate the experiment and (step.2) will remove the old copy.
510      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
511      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
512      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
513      tutorial_global_oce_biogeo    <- copy of dic_example
514      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
515      tutorial_plume_on_slope       <- copy of plume_on_slope
516      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
517      tutorial_global_oce_optim     <- empty for now (David ?)
518      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
519     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
520    o correct a sign problem in cost_scat.F
521    o obcs and ptracers: fix boundary conditions for advections schemes
522      with larger stencil
523    o thsice adjoint: start
524    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
525      completeness
526    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
527      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
528    o ptracers adjoint:
529      * avoid extensive recomputatations
530      * fix missing re-init. of gptr (missed by TAF)
531    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
532      me to turn off the excessive output to STDOUT that this package produces
533    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
534      and add those terms in Vector-Invariant formulation.
535    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
536      if the control period (xx_hfluxperiod etc) is 0
537    o in profiles pkg, clean routines and fix details
538    o in ecco pkg, reading ssh data:
539      fix problem in case the model does not start at iter0=0
540    o fix mnc-pickup/restart for ptracers
541    o new package prifiles:
542      code to compute profile-based cost by Gael Forget
543      (modifs in ecco, ctrl, autodiff)
544    o Benign bug fix in initialization (spotted by M. Mazloff) of
545      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
546    
547    checkpoint58c_post
548    o adjoint: finish NLFS adjoint and provide reference output in
549      verification/global_ocean.90x40x15/results_ad_nlfs
550    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
551      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
552      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
553      with SEAICE_CGRID defined.
554    o move calendarDumps from "data" to "data.cal" and clean-up the code
555      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
556    o add useEXF & useCAL flags (for now, set in hard-coded way)
557    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
558      (were missing in NH mode, and wrong in quasihydrostatic mode).
559      waiting for Chris updated version of calc_gw to add those CALLs.
560    o fix bug in quasihydrostatic S/R ;
561      add a test for this option: global_ocean.90x40x15.qshyd
562    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
563      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
564    o add on/off flag useOffLine for package OFFLINE
565    o seaice:
566      - modify advection so that it works also on the C-grid
567      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
568        problem in multi-tile runs with C-grid
569      - add flags for clipping ice velocities and/or masking solver forcing
570      - fix drag (ocean on ice) formulation and a bug that caused noise in the
571        C-grid solver
572      - added a few comments to seaice_diffusion.F
573      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
574        are now exclusive)
575      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
576        required re-ordering the code a little:
577       + make DAIRN global variable (defined in SEAICE)
578       + move computation of the viscosities eta and zeta into a new separate
579         routine (because I need to recompute them in seaice_ocean_stress.F)
580    
581    checkpoint58b_post
582    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
583      update output.txt of exp. aim.5l_cs.thSI
584    o various mnc cleanups and improvements:
585      + shrink lookup tables by factor of ~4
586      + better error reporting when running out of lookup space
587      + able to handle longer path/file names (up to 500 chars)
588    o adjoint:
589      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
590      - TBD: "hidden" mom_vecinv recomp. in dynamics
591    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
592     (allow to differentiate between forcing components using new integer flags:
593      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
594     and add new flag to put Dissipation tendency out of Adams-Bashforth.
595    o ecco
596      - enable trend removal from SSH anomaly obs.
597    o adjoint
598      - a fix for PmEpR when #undef EXACT_CONSERV
599      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
600      - try to fix "hidden" recomp. in forward_step for NLFS
601        (NLFS seems broken sometimes after I checked it in)
602    o seaice:
603     - add c-grid version of the dynamic solver:
604       + three new routines that are the c-grid substitute lsr, dynsolver
605         and ostres
606       + put a few fields that were local to dynsolver into global common
607         blocks, so that I can move the computation of stresses etc into
608         seaice_lsr (saves coding but may break the adjoint).
609     - replace more hardwired parameters by runtime parameters
610     - add ice masks that mask the rhs of the implicit solvers where there
611       is no ice (commented out in seaice_dynsolver, because i am not sure
612       if this works properly), eventually this should replace the clipping
613       of ice velocities in seaice_dynsolver to +/-40cm/s.
614    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
615      include it only where its needed
616    o move balancing of fluxes before the call of external_forcing_surf
617    o seaice:
618      - correct units of turning angles (now they are really in degrees)
619      - move computation of GWATX/Y out of main routine into dynsolver
620      - initialize GWATX/Y in seaice_init
621    o Apply mask on Fresh-Water flux (needed for SSH forcing).
622      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
623    o seaice: add runtime flags for turning angles (default to zero)
624    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
625      and trend from exf forcing and ctrl control adjustments
626    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
627      (since checkpoint57x_post)
628    o change the default rotation period to 86164.s = the Earth rotation
629    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
630      and based on a reference stratification. Tested within hs94.cs-32x32x5.
631    o seaice advection: add code for choosing between the default (2nd order
632      central differences) and multiDim advection schemes provided by
633      pkg/generic_advdiff
634    o seaice:
635      - removed all references to SEAICE_GRID.h fields from
636        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
637        (cubed-sphere configuration will change a little)
638      - grid computations in seaice_init are obsolete now.
639      - cleaned up code a little so that is easier to read (hopefully).
640      - added new (better?) discretizations of default advection and diffusion
641        (turn on with SEAICEuseFluxForm)
642      - replace 1 in 3d global fields by kSurface in growth.F
643      
644    checkpoint58a_post
645    o seaice:
646      - bug fix in advect.F
647    o shelfice:
648      - separate shelfice load anomaly from pload (breaks with time
649        dependent forcing), => introduce constant field shelficeLoadAnomaly.
650        Its default is 0., but it may be computed more cleverly from (unknown)
651        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
652        done offline. A good approximation of the pressure load anomaly is
653        necessary to avoid large initial adjustment processes underneath
654        deep-reaching shelfice.
655      - small fix in ISOMIP shelfice_thermodynamics
656      - add more sophisticated thermodynamics of Hellmer (1989), this is
657        now the default
658      - give a few constants more intuitive names
659    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
660      if bulk formulae are used in long integration (especially EmPmR). Turn
661      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
662      if balancePrintMean, the imbalance that is substracted is printed to
663      STDOUT.
664    o fix bug (typo) in obcs_apply_eta.F
665    o add a new package shelfice which enables us to model the circulation
666      underneath shelf-ice with draughts of hundreds of meters.
667     - works
668     - to do: + include improved thermodynamics
669              + check whether kSurfC (from model/inc/SURFACE.h) can be used
670                instead of new field kTopC
671              + can we use topoFile, Ro_surf and existing code in ini_depth.F
672                instead of new field R_shelfIce and new code in ini_depth.F
673                and ini_mask_etc.F?
674              + adjust vertical mixing schemes?
675    o seaice pkg:
676     - add a cpp-flag to include a simple formula for a salinity dependent
677       freezing point of sea water at the surface
678     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
679       meridional stresses are now different (and hopefully correct)
680    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
681       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
682       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
683    o pkg/diagnostics: add options and parameters for regional-statistics
684       diagnostics ; define regions by reading a region-mask from a file
685       (might add other options later)
686    o pkg/bulk_force:
687     - add option and parameters to use AIM surface-flux formulae.
688     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
689       others forcing fields (defined in PARM05, parameter file "data") are loaded
690       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
691     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
692     - use the right EXCH call for uwind,vwind (to work on CS-grid).
693     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
694       and parameters (note: calcWindStress replaces .NOT.readwindstress).
695     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
696    
697    checkpoint58
698    o add "--embed-source" option to genmake2 which, when the supporting
699      tools can be compiled (as determined by genmake2) will turn on the
700      embed_files package which then embeds the entire MITgcm source code
701      (*.[fFhc] + Makefile) used for the build within the executable
702      - requested by CNH but off by default
703      - adds a paltry <9MB to the mitgcmuv executable in most cases
704      - only writes the output when useEMBEDSRC in eedata is true
705    o clean up 3-dim. relaxation codes:
706      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
707      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
708      * Thanks to Tom Haine for testing!
709    
710    checkpoint57z_post
711    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
712      affects output (@ truncation level) of exp. plume_on_slope ; updated.
713    o fix the pickup behavior for obcs in combination with ptracers
714    o fix a bug in ptracers_external_fields_load
715    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
716      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
717    o transfered surface NH pressure to eta field (if exactConserv).
718    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
719         and update lab_sea output.txt file.
720    o completing 3-dim. relaxation code: additional term
721         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
722      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
723      * At compile time, in "EXF_OPTIONS.h" set
724          #define  ALLOW_CLIMTEMP_RELAXATION
725          #define  ALLOW_CLIMSALT_RELAXATION
726      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
727          tauThetaClimRelax3Dim = 15552000.0,
728          tauSaltClimRelax3Dim  = 15552000.0,
729      * 3 cases:
730          1) Use a constant-in-time 3-dim. field
731          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
732          3) Real-time relax. to time-evolving prescribed field
733    o Adding Laplacian-type smoothness constraint on
734      initial and boundary (forcing) controls (ic, bc)
735      * enable at compile-time via
736        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
737      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
738      * Absolute scale somewhat unclear so far
739      * no area weighting was included since no other cost term does so far
740    
741    checkpoint57y_post
742    First step for a NLFS adjoint
743    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
744    o new init. routines for calc_r_star, calc_surf_dr
745    o still need to deal with ini_masks_etc
746    o testreport seemed happy
747    checkpoint57y_pre
748    
749    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
750    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
751    o add new offset feature to offline pkg (plus minor cleanup)
752    o cfc fixes for final year of integration
753    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
754      be in GCHEM_OPTIONS).
755    
756    checkpoint57x_post
757    o fix testreport Pb in multiple test experiment.
758    o cleanup our namelist syntax in verification:
759      - make it more F95 standards compliant (some work still needed)
760      - allows the vast majority of our tests to work with gfortran
761    o Non-Hydrostatic:
762     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
763     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
764    o Allow to apply AB on T,S rather than on AB(gT,gS):
765     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
766     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
767       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
768     - need a "clever" read_pickup to restart from the other AB formulation
769    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
770    o remove some unused variables (reduces number of compiler warnings)
771    o adjoint
772      * Disable useVariableViscosity for adjoint for time being
773        (there are a number of extensive recomputations)
774      * Initialize certain variables needed for adjoint
775    
776    checkpoint57w_post
777    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
778                 fix the singleCpuIO RS version of MDSWRITEFIELD
779       and add a WARNING if using globalFiles=T with multi-processors.
780    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
781      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
782    o tracer advection scheme:
783      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
784       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
785       was not very convenient).
786      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
787       (further tests needed for the implicit DST & Flux-Limiter schemes).
788    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
789      and sRef for convenience, handy, when you want to initialize
790      ptracers in a large domain with a constant non-zero value. Also,
791      untangle ptracers_init.F a little.
792    
793    checkpoint57v_post
794    o change dome exp. to use variable viscosity in side-drag terms.
795    o remove all the files from the cfc_offline test since they are now
796      incorporated into tutorial_cfc_offline which has been producing
797      identical results for a few days of testing
798    o add new parameter: sideDragFactor to enable half-slip-side BC
799      and change side-drag S/R to use viscosity from mom_calc_visc
800      (can switch back by setting sideDragFactor=0.); affects results at
801      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
802       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
803    o vorticity & strain are now computed without masking, to account for
804      no-slip-side BC in variable viscosity calculation ; mask is applied
805      anyway later on, before computing advection/coriolis terms.
806    o modify exp4 to test new obcs support for reading from external files
807      and for passive tracers
808    o fix behavior of ptracers_monitor when monitor output is written to a
809      netcdf-file; still not independent of monitor.F (writes in the same
810      file).
811    o change default value of tRef (put a uniform, meaningful value for ocean
812      & atmos) and initialize sRef (was missing, as Martin mentioned).
813    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
814      to be proportional to enstrophy dissipation length.  Thus,
815       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
816      This is now consistent with Smagorinsky and with the manual.
817    
818    checkpoint57u_post
819    o OBCS and PTRACERS: add open boundary support for passive tracers
820      - either use homogenous (pseudo) v.Neumann conditions or prescribe
821        OB-values from file; this is not different from the way theta and salinity
822        are treated
823      - however, Orlanski-radiation conditions are not supported, and the model
824        will stop if you use pTracers and Orlanski at the same time.
825      - beefed up the rountine obcs_external_fields_load: now only those open
826        boundary values are overwritten with values from files for which there
827        are really files, otherwise the OB-fields remain untouched. This makes
828        it possible to use different OBs at different ends of the domain (as
829        with EXF)
830    o reduce number of exch calls in shap_filt (s2).
831    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
832      truncation level) 4/5 MLAdjust test results (11&12 digits match).
833    
834    checkpoint57t_post
835    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
836    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
837      same truncation, independent of the face number: affects affects several
838      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
839    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
840      note that biharmonic viscosity + no-slip was not tested in any experiment.
841    o fix bug in non-linear free-surf side-drag ; generate new output for
842      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
843    o make mnc honor the writeBinaryPrec flag for most kinds of output
844    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
845    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
846      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
847    o add brackets in multi-terms sum to get same truncation, independent of
848      the face number (manage to get exactly same value of gU,gV at the cs-edge)
849      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
850    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
851      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
852      a maximum grid-scale Reynolds number.  Also, changes all length calculations
853      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
854      Suggested values of viscosity parameters found in mom_calc_visc.
855      Many new viscosity diagnostics available.
856    
857    checkpoint57s_post
858    o Add clearing-house for viscosity calculations, mom_calc_visc and
859      correct numerous bugs in LeithD and Smagorinsky discretizations.  
860      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
861      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
862      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
863      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
864      The Strain-Tension form is now called with useStrainTensonVisc=.true.
865      ViscAhStrain and viscAhTension are now retired.
866    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
867    o In response to JMC's bug report, genmake2 now ignores any soft-links
868      that it finds in the *current* directory when searching for files.
869      Soft-links found in any other source directories will still work as
870      they did before.
871    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
872      a C routine to unlimit the stack size
873    o mnc-ify pkg/aim snapshot vars
874    o mnc-ify pkg/land as requested by Daniel
875    o various changes to mnc including:
876      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
877      - output can now be grouped so that all files within a group
878          change the ITER portion of their names in lock-step together
879      - can now read ("global") PER-FACE (in addition to PER-TILE) files
880          and works with both EXCH1 and EXCH2 (but needs more testing)
881      - writing works for all verification test cases w/ g77 on Linux
882    
883    checkpoint57r_post
884    o make MNC variable initialization happen earlier
885    o add diagnostics for (almost) each term of the momentum Eq.
886    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
887    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
888    o remove MINIMAL_TAVE_OUTPUT option ;
889      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
890    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
891      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
892    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
893    o add time-dependent SST, SSS control
894    o cost terms in ecco/ modularized (new cost_generic.F)
895    o cost_averages routines are modularized (new cost_averagesgeneric.F)
896    o new infrastructure for seaice model vs. obs misfits in seaice/
897      * driver from the_main_loop.F is seaice_cost_driver.F
898      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
899      * gradient check in Exp. 6a of natl_box_adjoint/
900    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
901      (see README file)
902    
903    checkpoint57q_post
904    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
905    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
906      - bug was reported by Jean-Michel and Ian Fenty
907    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
908      update exp. cpl_aim+ocn output.
909    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
910      Needed for high-res. runs with large global files
911      to be able to limit tapelev size
912    o Changed some tests for adjoint:
913      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
914      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
915      * global_ocean.90x40x15/ back to default 3-level checkpointing
916    o Modifications to enable scripted COMMON to MODULE conversion
917      * verification/OpenAD/code/ has necessary scripts and description;
918      * converts, compiles and runs successfully;
919    
920    checkpoint57p_post
921    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
922    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
923      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
924    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
925    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
926      (was already the case for dissipation with mom_vecinv,
927       and also the case for grad.PhiHyd when staggered-timeStep)
928      This will allow to put dissipation out-off the AB time-stepping.
929     Unfortunately, affects truncation error. Update output of exp. that "fails"
930      (cg2d matching number) and leave the others for later: front_relax(10),
931      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
932      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
933    
934    checkpoint57o_post
935    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
936      (2) its ready to be documented during the 20050801 DocFest
937    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
938      for ideal_2D_oce and lab_sea on linux_ia32_g77
939    o set to #undef CTRL_SET_OLD_MAXCVARS_30
940      in global1x1_tot/code_seaice_adj to access indices 32, 33
941      (worth another tag)
942    
943    checkpoint57n_post
944    o adding precip control xx_precip 32
945    o adding swflux control xx_swflux 33
946    o Replacing 10 forcing penalty cost routines by 1 generic.
947    o Implementing partitioning in time-mean and variable adjustment
948      for atmos. state.
949    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
950    o in natl_box_adjoint:
951      * updated exp 1 to 10
952        (but does not have time-mean vs. variable split results yet)
953    o updated global1x1/*_seaice_adj/
954      to incorporate latest changes
955    o enable useSingleCpuIO for mdsio vector routines
956      (applies in particular to tapelev I/O)
957    o removed inefficient K-loop in all active_file*control*.F
958    
959    checkpoint57m_post
960    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
961      and advect_cs (use EXCH-2 and standard cs-32 grid files).
962    o pkg/exch2: filling of face-corner halo regions is optional
963      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
964    
965    checkpoint57l_post
966     tag before updating tutorials (pre-release-2)
967    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
968       for output and interpolation of input fields onto model grid)
969    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
970       Affects results of exp. rotating_tank ; update output.txt.
971    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
972          and taking the square quantity and/or using a fraction-weight field.
973    o fix aim_diagnostics_init.F mate numbers.
974    o add mnc output capability to diagnostics/diagstat and update
975      our cvsignore files for the ACSII output generated
976    
977    checkpoint57k_post
978    o lab_sea now uses diagnostics package and provides a suite of
979      new EXF diagnostics output.
980    
981    checkpoint57j_post
982    o exf
983      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
984        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
985        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
986      * extended diagnostics output
987        - now includes all EXF variables
988        - hs, hl moved to common block
989        - separate S/R for diagnostics, called after ctrl vector is added
990        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
991        - EXFqnet contains true Qnet (i.e. includes qsw)
992      * updated verif. lab_sea, global_with_exf
993      * Rearranging hflux (exf_mapfields -> exf_getforcing)
994        to ensure that diagnostics sees a true EXFqnet
995    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
996    o diagnostics pkg: change pointers so that 1 diagnostic can be used
997      several times with different frequencies.
998    o mnc-ify the thsice package as requested by Daniel Enderton
999      - the monitor--MNC output needs work
1000      - many attributes need to be added (most are currently blank)
1001    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1002      - many attributes need to be added (most are currently blank)
1003    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1004    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1005    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1006      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1007         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1008    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1009     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1010    
1011    checkpoint57i_post
1012    o Diagnostics package was changed: diagnostic allocation is now deactivated
1013      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1014    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1015      add 1rst Order upwind vertical Shear.
1016    o add a quick fix for A/B checkpointing in OFFLINE mode
1017    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1018      end-run around the C/Fortran linking horror in eesup/src/timers.F
1019    o added pkg/runclock: allows user to terminate run based on wall clock
1020    o added non-hydrostatic scaling parameter: nh_am2
1021    o pkg/my82: futile attempt to make results compiler-independent by adding
1022      some "_d 0", etc. no effect.
1023    o for mnc output, fill the 'T' coordinate var with myTime and create a
1024      separate 'iter' variable for iteration count
1025    o pkg/diagnostics:
1026      add new capability: output of Global/Regional & per-level statistics ;
1027      tested against monitor output (including land & thSIce) on various exp.
1028    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1029    
1030    checkpoint57h_done
1031      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1032      data.diagnostics, data.gchem, data.ptracers) is done.
1033    
1034    o pkg/diagnostics: prepare for Global/Regional statistics.
1035      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1036    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1037      and rename it: DIFFERENT_MULTIPLE
1038    
1039    checkpoint57h_post
1040    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1041    o pkg/diagnostics: change output frequency, now in seconds (instead
1042      of Nb of iterations). This requires to change data.diagnostics.
1043    checkpoint57h_pre
1044    
1045    o in mnc, let the user create the output dir if both mnc_outdir_date
1046      and mnc_outdir_num are false
1047    o add fflags() to pkg/diagnostics which allows one to specify, on a
1048      per-file basis, the file precision [default behavior is unchanged]
1049    o added diagnostics to pkg/kpp, including computation of mixed layer
1050      depth based on a temperature/density criterion
1051    o updated verification/natl_box to test the new pkg/kpp diagnostics
1052    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1053    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1054    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1055      not mnc -- this mistake was found by JMC and is now corrected
1056    
1057    checkpoint57g_post
1058    o add Adams-Bashforth 3rd Order time stepping:
1059      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1060      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1061    checkpoint57g_pre
1062    
1063    o make lambda[Theta,Salt]ClimRelax spatially varying
1064      (default remains spatially uniform constant based on tau)
1065    o added new control variables
1066      * init. uVel, vVel, etanN
1067      * lambda[Theta,Salt]ClimRelax
1068    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1069      (suggested by G. Forget)
1070    
1071    checkpoint57f_post
1072    o add parameter "baseTime" = model base time = time at iteration zero
1073      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1074      account for baseTime shift
1075    o move Coriolis arrays from PARAMS.h to GRID.h
1076    checkpoint57f_pre
1077    
1078    o mnc-ifying the seaice package
1079    o introduced an alternative length scale calculation for use in the limiting
1080      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1081    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1082    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1083      as well as grad(vort3).  Made it compatible with both approximate form
1084      for the cubed sphere and full form of these gradients.  Added flag
1085      useFullLeith to select between approximate and full form.  
1086    o add "d0" in getcon.F to reduce differences between compilers/platforms
1087      update output.txt of exp. fizhi-gridalt-hs
1088    o change port_rand funtion to allow to set the seed.
1089    o fix obscure MNC bug involving conversion between reals and integers
1090      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1091        new version is now more standards-compliant
1092    o adjoint-related modifications
1093      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1094      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1095      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1096    
1097    checkpoint57e_post
1098    o Adding eddy stress controls a la Ferreira et al.
1099    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1100    
1101    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1102      update output.txt of exp. fizhi-gridalt-hs
1103    o add more "Z" dimensions and associated coordinate vars to MNC
1104    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1105    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1106      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1107      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1108      months and years.  Requires pkg/cal.
1109    o diagnostics: add pickup functionality
1110      - off by default for backwards compatibility
1111      - current version only uses MDSIO -- MNC will be added
1112    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1113    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1114    
1115    checkpoint57d_post
1116    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1117    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1118      output from the diagnostics package
1119    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1120    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1121      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1122    o add coordinate variables to the MNC output from the diagnostics package
1123    o change MNC-flags default value: true when useMNC=TRUE
1124    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1125      the ability (off by default) to read the grid information using MNC
1126    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1127    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1128    o do snap-shot diagnostics at the middle of the time-interval (instead of
1129      at the end).
1130    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1131      new test for AIM with thSIce + slab-ocean
1132    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1133    o move state variable diagnostics to the beginning of the time step ;
1134      (note: still needs some work specially for snap-shot diagnostics)
1135      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1136    
1137    checkpoint57c_post
1138    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1139    o generate new output.txt files on faulks with g77 & the new -ieee option
1140    checkpoint57c_pre
1141    
1142    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1143      update output.txt of exp. global_ocean.90x40x15
1144    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1145      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1146    o add saltFlux(+File) forcing capability with periodicExternalForcing
1147    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1148    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1149    o improvements for the MNC output from DIAGNOSTICS:
1150      - correct handling of the unlimitied dimension
1151      - all dims now have associated coordinate variables
1152      - variables located at U, V, and Corner ("Z") points are now written
1153        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1154        *all* data points are output
1155    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1156    o added pkg/seaice/seaice_monitor.F
1157    o mdsio_readfield.F can now read files visible only to master MPI process.
1158    o pkg/seaice: some test code for ice-modified ocean stress
1159    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1160      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1161      spurious negative numbers for precipitation and humidity.  Will cause
1162      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1163    o pkg/ctrl/
1164      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1165        May be enabled via doPackDiag
1166      *  introduce z-scaling of
1167         + gradient (doZscalePack) and
1168         + control (doZscaleUnpack)
1169    o pkg/mdsio/
1170      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1171      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1172    
1173    checkpoint57b_post
1174    o simplify options in diagnostics_fill arguments (remove weird combinations)
1175    o fix MNC coordinate variables so that they now contain per-face index
1176      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1177      general, EXCH2 grids are only aligned to a "local" coordinate system
1178    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1179    o Implement instantaneous output within pkg diagnostics:
1180      setting a negative frequency in data.diagnostics produces
1181     "snap-shot" output (as opposed to time-average if freq > 0)
1182    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1183      NOTE: change ptracer diagnostics name: use 2 characters to work with
1184            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1185    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1186      becomes the coordinate variable for the 'T' dimension
1187    o add CF-style coordinate variables to MNC
1188      - just a first cut:  numbers are meaningless on the cubesphere and
1189        missing along the T axis but otherwise it works!
1190    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1191    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1192    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1193      this is based directly on what the model compute, so that the content of
1194      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1195    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1196    o clean up build options files for SunOS, in particular
1197      - remove -traditional from xmakedepend
1198      - change -xarch=v9 to -xarch=native for f77
1199      - restore use of make (not gmake)
1200      - add CC=gcc if using g77
1201    o changes per discussion of AM, JMC, & EH3 today:
1202      - move redundant "grid" variables out of "state" -- in preparation of
1203        creating proper CF-style coordinate variables and in recognition
1204        that any/all grid variables can be easily copied (eg. w/NCO) from
1205        the grid files into any of the other NetCDF files
1206      - *always* output grid variables with MDSIO (this will eventually be
1207        changed)
1208      - output MNC grid file if useMNC is true
1209    o every instance of _END_MASTER() has been found and replaced with
1210      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1211      preprocessors
1212    o re-arrange diagnostics pkg initialisation:
1213     - allow each package to extend the available diagnostics list
1214     - add some checking and fix small problems (multi-threaded, ...)
1215     - new S/R diagnostics_fill (replace fill_diagnostics):
1216       look through the short list of active diag. (instead of the long list)
1217       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1218    
1219    checkpoint57a_post
1220    o this set of changes restores TAMC compatibility
1221      tested for global_ocean.90x40x15 adjoint on trough
1222      (what a pain)
1223    
1224    checkpoint57a_pre
1225    o some modifs in tools/build_options for sunos
1226    o call ctrl_pack for ctrl at end for optimcycle=0
1227    
1228    checkpoint57
1229    o add horizontal bi-harmonic viscosity for vertical velocity
1230      - new parameter viscA4W (defaults to viscA4)
1231      - affects only non-hydrostatic code
1232      - to be done: no-slip lateral boundary conditions
1233    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1234    o implement Implicit Vertical advection for pTracers
1235    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1236      (implemented also for implicit vertical diffusion & advection)
1237    o OBCS: extend application of tracer open boundary conditions
1238      to a strip beyond the boundary of width Olx/Oly
1239    o add call monitor to TAF set of required calls (flow directives)
1240      and include in natl_box_adjoint
1241    o untangle a few ifdefs related to cost, ctrl, autodiff
1242      untangel a few ALLOW_ECCO_OPTIMIZATION
1243    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1244      (theta2, salt2 in ecco_cost_weights)
1245    
1246    checkpoint56c_post
1247    o OBCS as control variables
1248      - update ctrl_ad_diff.list, obcs_ad_diff.list
1249      - remove balance of obcs controls from default
1250      - fix index bug nobcs in ctrl_init
1251      - fix dummy fields filen in ctrl_pack
1252      - add dummy weights for obcs
1253    o lsopt: comment out fort.94 output
1254    o optim:
1255      - remove unnecessary header files
1256      - adjusted namelists
1257      - add xerbla.F to Makefile
1258    o exf:
1259      - multiple modifications of exf_check_range
1260      - unit change in exf_init_runoff from [m/year] to [m/s]
1261    o mdsio:
1262      - i/o-vector change debugLevel from debLevA to debLevB
1263    
1264    checkpoint56b_post
1265    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1266      is called from DO_THE_MODEL_IO
1267      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1268      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1269      - clean up PTRACERS_WRITE_TIMEAVE a little
1270    o add another verification experiment that tests both the cfc-pkg and
1271      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1272      reactive tendencies treated inline with regular timestepping
1273    o testreport previously did a lousy job of comparing small numbers, so
1274      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1275      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1276      testreport.
1277    o ptracers_monitor: bug fix for MPI
1278    
1279    checkpoint56a_post
1280    o GCHEM: finish reorganizating the package
1281      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1282        (introduces another 3D-array for each passive tracer, but only if
1283        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1284        gchemTendency is not needed because the timestep is done separately)
1285      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1286      - GCHEM is now---more or less cleanly---separate from PTRACERS
1287      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1288        so clear to me how that should be done in a general way.
1289    o CFC: improve formatting of output in CFC_ATMOS
1290    o PTRACERS:
1291      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1292        that ALL experiments with ptracers enable can be checked. This makes
1293        GCHEM_MONITOR obsolete.
1294      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1295        monitorFreq
1296      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1297    o add PTRACERS (PTR0[1-5]) to testreport output
1298    o exf_check_range:
1299      * default changed to .TRUE.
1300      * will check values for niter0 if debLevA, every timestep if debLevB
1301      * STOP in exf_check_range if 'out of range'
1302      * range chosen generous to allow for potential extema
1303      TBD: a version with stricter range
1304           permitted range would be runtime parameters
1305    o GMredi:
1306      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1307      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1308      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1309    o GCHEM:
1310      - move call to GCHEM_FORCING_SEP, so that it is now called before
1311        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1312      - introduced a useGCHEM runtime flag and applied it everywhere.
1313      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1314        this flag is now only visible within GCHEM-pkg routines.
1315      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1316        be replaced by a 3D array that is computed before thermodynamics; for
1317        this, the tracer ID iTracer had to be included into the parameter list
1318        of ptracers_forcing
1319      - set up forward_step to call gchem_forcing, that will replace
1320        gchem_forcing_int in ptracers_forcing
1321      - cleaning up
1322    o small cleaning of exch2: remove files that are also in eesupp/src
1323    
1324    checkpoint56
1325    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1326    o mnc: cleanup "full" files--fixes out-of-memory problem
1327    o ECCO-GODAE
1328      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1329      * fully merged and updated from SIO code
1330        windstress sign change affects
1331        - exf_inscal_[u/v]stress
1332        - sign of xx_tau[u/v] adjustments
1333        - signs in cost_scat
1334      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1335      * natl_box_adjoint updated and compressed
1336      * 2-level checkpoint switch added
1337        (tested in EXP. 1 of natl_box_adjoint)
1338      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1339    o SVD
1340      * first complete, non-hacked version for SVD calculations
1341      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1342        performed via direct access files admtlm_vector.it????
1343        (via ctrl_[un]pack)
1344      * optimcycle is used for ARPACK iteration counter
1345        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1346      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1347        and add linear transforms where necessary
1348      * controls are initial/final SST, SSS (can be extended; need to check
1349        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1350    o mdsio: filename info to both stderr, stdout
1351    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1352      from sign change
1353    
1354    checkpoint55j_post
1355    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1356      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1357    o add consistent build directories and .cvsignore files to verification
1358    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1359    o make all subroutines 30 or less characters in length for certain older
1360      compilers to work (a thorough search only turns up two routines in
1361      pkg/ptracers)
1362    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1363      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1364    
1365    checkpoint55i_post
1366    o change arrays for total vertical diffusivity (2.D if explicit,
1367      3.D if implicit) ; each ptracer uses its own background value.
1368    o added mnc/NetCDF output capability to ocn_compon_interf
1369      - added bits to verification/cpl_aim+ocn so that it can run on
1370        ITRDA and other clusters without the mpirun "-wd" option
1371    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1372      configuration
1373    o give MNC the ability to create additional files rather than
1374      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1375      - the default is just less than 2GB which is a practical limit
1376        on many systems
1377    o Compute the non-local term using either KPP vertical diffusivity (=default)
1378       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1379    
1380    checkpoint55h_post
1381    o add verification test "vermix"
1382    o remove all the *_ioinc flags and replace with the single global
1383      outputTypesInclusive flag
1384    o allow to set a vertical profile of vertical diffusivity for T & S
1385    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1386    o useMNC moved from data.mnc to data.pkg
1387    
1388    checkpoint55g_post
1389    o Renaming carbon AD experiments to comply with testreport conventions
1390    o Updating adjoint of Held-Suarez hs94.1x64x5
1391    o Fixing directives for non-ECCO forward_step, after ECCO directives
1392      have been fixed to avoid recomp. of do_oceanic_phys
1393      Works well for global_ocean.90x40x15,
1394      but recomp. issue remains for carbon
1395    o Updating adjoint output for natl_box_adjoint after
1396      pkg/ecco has been modified (see taga c55d_post)
1397    
1398    checkpoint55f_post
1399    o rename to timeave_init_fixed
1400    
1401    checkpoint55e_post
1402    o some delicate re-shuffle of store directives to avoid one
1403      extra call of do_oceanic_physics
1404      affects ecco_the_main_loop.F, do_oceanic_physics.F
1405      checkpoint_lev1_directives.h
1406    o NB: this may break global_ocean adjoint temporarily,
1407      but it is clear how to fix it. Will do later, need this now.
1408    
1409    checkpoint55d_post
1410    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1411    o ecco_cost_weights is modified to 1x1 runs
1412    o modifs to allow observations to be read in as
1413      single file or yearly files
1414    o enable to read exf forcing fields as either
1415      single file or yearly files (flag useExfYearlyFields)
1416    checkpoint55d_pre
1417    
1418    o switch between 2-level and 3-level checkpointing
1419    o add ability of MNC to write local and "partial" (eg. 2D slices where
1420      the full 3D field is never actually stored) arrays to NetCDF files
1421      with the correct (that is, the complete multi-dimensional) set of
1422      array indicies
1423      - used in mom_vecinv() to write the diagFreq output
1424      - tested (demonstrated) in verification/aim.5l_cs
1425    o further mnc-ification
1426      - add verification/lab_sea to the list with mnc setups
1427      - fix undefined mnc v-names in cd_code
1428      - add kpp to mnc output (both snapshot and timeave)
1429    o non-hydrostatic code
1430      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1431        in calc_gw.F
1432      - defaults to viscAh
1433      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1434        friction or Leith) in non-hydrostatic mode, as long as there is
1435        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1436    o pkg/cost
1437      extend simple cost functions to treat time mean quantities
1438      (T,U,V) via cost_accumulate_state from cost_tile
1439    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1440        be 2 times larger than the minimum size the advection scheme requires.
1441        now get a perfect conservation of salt in advect_cs test-exp (updated)
1442    o GGL90 (Gaspar's TKE mixed layer)
1443      - add horizontal diffusion of TKE, requires exchanges in
1444        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1445        default. In OPA there is no horizontal diffusion of TKE but the
1446        mixing coefficients are computed from a horizontal average of TKE of
1447        6 points or so. I think that diffusion has a little more physical
1448        justification.
1449      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1450        was in vain)
1451      - mask tke-variable in ggl90_init
1452    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1453    o fix biharmonic diffusion on CS-grid.
1454    o more obcs stuff
1455      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1456        for reading boundary values. This routine is called from
1457        obcs_prescribe_read
1458      - updated obcs_check
1459      - changed sponge layer relaxation parameter units for days to seconds
1460      - turned off sponge layer by default
1461      - changed argument list of OBCS_CALC to myTime+deltaTclock
1462      - fixed about 35 bugs in obcs_external_fields_load
1463    
1464    checkpoint55c_post
1465    o obcs stuff
1466      - new runtime flags useOBCSprescribe, useOBCSbalance
1467      - re-arranged obcs_calc
1468      - moved exf_getobcs to obcs_prescibe_read
1469        obcs_prescibe_read is called after ORLANSKI stuff
1470        and independent of it (executable can contain all).
1471      - updated obcs_check
1472      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1473        These may be necessary only if tangential velocities are
1474        prescribed at OB, not sure, needs testing.
1475    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1476      which simplifies the calls and passes the ifc check-bounds test
1477    
1478    checkpoint55b_post
1479    o add a 2D scalar, Z location, exchange_2 routine.
1480    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1481      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1482      affects advect_cs results (for the wrong reason): update output.txt
1483    o use a more standard discretization for biharmonic viscosity ;
1484     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1485      affects results of dome set-up: update output.txt
1486    o fix gad_advection.F (CubedSphere part), back to version 1.23
1487    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1488    
1489    checkpoint55a_post
1490    o merged code to
1491      * prescribe/read time-dependent open boundaries
1492        (works in conjunction with exf, cal)
1493      * sponge layer code for open boundaries
1494      * each boundary N/S/E/W now has its own CPP option
1495        (healthy for the adjoint)
1496    
1497    checkpoint55
1498    o up-to-date adjoint of previous breaks
1499      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1500      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1501      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1502      - carbon: * remove tr1-related adjoint verification
1503                * add ptracer as control variable
1504    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1505      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1506    
1507    checkpoint54f_post
1508    o in verification/carbin/ remove experiment related to
1509      ALLOW_PASSIVE_TRACER (array tr1 etc)
1510      code_ad/ input_ad/ results_ad
1511    
1512    o add two new packages
1513      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1514        + subject to optimization (memory)
1515      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1516        + subject to reordering (many GOTOs in the original code)
1517        + so far opps is called for every (i,j) point, and then operates in
1518          the vertical; one may want to reorder the scheme in order operate in
1519          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1520          fields)
1521    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1522      - all verification tests compile and run with linux_ia32_g77
1523      - defaults are compatible with current input files--nothing
1524        should change if you were not previously using MNC
1525      - MNC output has been added in numerous places (eg. timeave)
1526        but there are still a few writes not yet do-able with MNC
1527        (this is in progress)
1528      - flags now allow for either/or/both use of MDSIO and MNC and
1529        documentation will soon follow
1530      - numerous small formatting cleanups for ProTeX
1531    o add version info (via BUILD_INFO.h) to MNC and stdout
1532    
1533    checkpoint54e_post
1534    o add two new packages
1535      - pp81 (Packanowski and Philander, 1981), Richardson number and
1536        stratification dependent mixing
1537      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1538      - these scheme operate in a similar manner as KPP (without ghat, of
1539        course), however there is only one diffusivity that is used for both
1540        temperature and salinity (and passive tracers)ç
1541    o add offline package
1542    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1543      provided by Stephanie Dutkiewicz
1544    o genmake2: add ability to search for C compilers and cleanup test output
1545      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1546    
1547    checkpoint54d_post
1548    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1549    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1550      leading to additional shift by 5 days each year of integration
1551       (i.e. leading to considerable offset over the years)
1552    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1553    o start with no AB and no initial filtering (staggerTimeStep):
1554      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1555    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1556      (external loading & cpl import/export stay in forward_step.F)
1557    o update coupling interface to work with new staggerTimeStep
1558    o change MDSIO ptracers_pickup.
1559    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1560    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1561    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1562    
1563    checkpoint54c_post
1564    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1565      this affects (truncation error) output.txt of test-exp:
1566       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1567    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1568    o change Qnet to always be the net heat flux, (+upward).
1569      affects (truncation error) output of natl_box exp.: updated
1570    o define the max number of passive tracers in PTRACERS_SIZE.h
1571    o start to test mnc routinely in exp0
1572    o add sea-ice loading (sIceLoad) as a new forcing field.
1573    
1574    checkpoint54b_post
1575    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1576       impressive on Altix and Opteron systems)
1577    o diagnostics can now write NetCDF files through the mnc package
1578    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1579    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1580    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1581      affects (truncation error) output of lab_sea & natl_box exp.: updated
1582    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1583    
1584    checkpoint54a_post
1585    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1586    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1587    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1588    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1589      + internal_wave (shift in writing cg2d_ini_res)
1590    checkpoint54a_pre
1591    
1592    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1593      - modified verification/lab_sea and natl_box_adjoint accordingly
1594    
1595    checkpoint54
1596    checkpoint53g_post
1597    o prepare splitting of thermodynamics: store convect.counter in common block
1598    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1599      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1600    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1601    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1602    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1603    o restore adjointability
1604    
1605    checkpoint53f_post
1606    o modifications that affect AIM experiment results (update output.txt):
1607      - no advection of S at top interface Nr (pkg/generic_advdiff)
1608      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1609    o AIM pkg:
1610      - include stability function into surf.Flux derivative relative to Tsurf
1611      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1612    
1613    checkpoint53e_post
1614    o merged cylindrical coord configuration
1615    o added rotating_tank experiment
1616    checkpoint53e_pre
1617    
1618    checkpoint53d_post
1619    o faulks upgraded: re-generate output.txt that have changed:
1620       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1621    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1622    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1623    o added Sadourny discretization of Coriolis
1624      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1625      - re-enabled use of omega3 (useAbsVorticity)
1626    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1627      vector-invariant equations
1628      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1629    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1630      hopefully without new bugs
1631      - still to do: biharmonic friction for non-hydrostatic w
1632    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1633    o regenerated output for global_ocean_ebm (using -ieee)
1634    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1635      of mom_common/
1636      - simple re-arrangement of instructions within computing loop
1637    checkpoint53d_pre
1638    
1639    checkpoint53c_post
1640    o new version of coupler for AIM+thSIce and Ocean models
1641     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1642     - land: change Evaporation of snow
1643     - aim with thSIce: fix bug in snow-precip.
1644    o changes to calc_gw.F
1645     - bug fix for w^2 term near the bottom boundary
1646     - (hopefully) improve the lateral slip boundary condtions for use with
1647        partial/looped cells
1648      - because the bug fix changes two verification experiments anyway (exp5
1649        and plume on slope), change the lateral boundary condition from half slip
1650        to the value of no_slip_sides
1651    o ebm package wasnt quite up to the parallel task. Fixed that.
1652    o Adjoint of EBM package + verification
1653      * TLM OK
1654      * ADM not sufficient accuracy yet (needs further testing)
1655    
1656    checkpoint53b_post
1657    o Commiting new energy balance model to repository
1658      * package is pkg/ebm
1659      * verif. is verification/global_ocean_ebm
1660      * references are in ebm_driver.F
1661    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1662    C        Global thermohaline circulation. Part I:
1663    C        Sensitivity to atmospheric moisture transport.
1664    C        J. Climate 12(1), 71-82
1665    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1666    C        Global thermohaline circulation. Part II:
1667    C        Sensitivity with interactive transport.
1668    C        J. Climate 12(1), 83-91
1669    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1670    C        Destabilization of the thermohaline circulation
1671    C        by atmospheric eddy transports.
1672    C        J. Climate 7(12), 1870-1882
1673    o Will need long integration testing.
1674    checkpoint53b_pre
1675    
1676    o created pkg/mom_common in preparation for variable viscosity code
1677    o renamed and split ini_mnc_io
1678    o pkg/land: only liquid water can diffuse or run-off
1679    o AIM using land: soil wetness availability account for snow
1680    o added printMapIncludesZeros to EEPARMS namelist
1681    
1682    checkpoint53a_post
1683    o restore TAMC compatiility for exf_constants.h
1684      (no usage of _d in .h)
1685    o Additional storing in KPP in an attempt to fix
1686      TAMC problem with adjoint of KPP code.
1687      (no success...)
1688      Identical code works fine with TAF.
1689    o Fixed verification/natl_box_adjoint experiments.
1690      Initial conditions for Experiments 4 and 5 are now
1691      set to "SEAICE_initialHEFF=0", which is more reasonable,
1692      and hence gives results closer to that of Experiment 2.
1693      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1694    
1695    checkpoint53
1696    o stable checkpoint with up to date adjoint
1697      TLM tests only run for 1st grdchk at the moment. Its unclear if
1698      this is a code problem or a problem with resetting code for g_
1699      variables that is being autogenerated wrong.
1700      Otherwise:
1701       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1702       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1703         are both still in chaos following their security messes.
1704    
1705    checkpoint52n_post
1706    o various build (mostly genmake2) changes including:
1707      - ability to build/run more easily within Cygwin and MacOS X
1708      - more complicated Makefiles with a stronger dependence on Gnu Make
1709    o pkg/seaice modifications
1710      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1711        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1712        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1713      - changed proxy for geostrophic velocity and updated
1714        verification/lab_sea/results/* accordingly
1715      - removed ADI dynamic solver from pkg/seaice
1716      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1717        they caused a segmentation fault under certain circumstances
1718      - removed unused field WATR
1719    o bug fix in exf-package:
1720      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1721         now reflect that.
1722    o small fixes in the cal-package:
1723      - set reference date to first of January for the 'model'-calendar
1724      - failing of cal_CheckDate in cal_FullDate now actually results in a
1725        warning
1726    o small modifications in exf-package to increase flexibility:
1727      - change climtempfreeze from a constant to a runtime parameter that
1728        is specified in data.exf_clim (default = -1.9)
1729      - introduce runtime parameter windstressmax (default = 2.0) that is
1730        specified in data.exf
1731    o fix in pkg/thsice:
1732      - update Evap (Tsf changes) to be consistent with Latent heat flux
1733      - maintain snow precipitation unchanged (even if Tsf >=0).
1734     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1735    
1736    checkpoint52m_post
1737    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1738      this does not change any of the results, because myIter=0 in swfrac always
1739      lead to jwtype=2 (the default anyway), but the call makes little sense
1740      as a default
1741    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1742    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1743      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1744    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1745    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1746    o extending useSingleCpuIO option to work with new exch2 I/O format
1747      - old-style, missing-tile I/O is still accessible by defining CPP
1748        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1749    o monitor package can write to NetCDF files and/or STDOUT
1750    o fix re-definition bug in MNC_GRID_INIT_ALL()
1751    o doc/api_reference added
1752      - a framework for building an API Reference Manual using all
1753        the "protex" comments embedded in the code
1754      - see pkg/generic_advdiff, pkg/mnc for examples
1755    o MNC:
1756      - make myThid the last argument for all subroutines
1757      - new default for the grid files: NO halos
1758      - add useMNC and other run-time flags
1759      - separate per-file-group handling of the unlimited dimension
1760      - early initialization of MNC w/ flags read at the eeboot stage
1761        and lookup tables set in initialize_fixed
1762      - write all MNC output to a freshly-created directory
1763    o thermodynamics sea-ice (thsice) is now tested with testreport.
1764    o test exp. advect_cs: use the standard cs32 grid ; update output.
1765    o Added functionality to grdchk:
1766      pick global i,j,k position (or nearest wet) where to perform check.
1767    
1768    checkpoint52l_post
1769    o new land formulation:
1770      a) use ground enthalpy as prognostic variable to ensure exact
1771         energy conservation.
1772      b) account for water temperature and for latent heat of freezing
1773         in all processes (rain, run-off, ground storage)
1774      c) compute surface and ground temperature implicitly.
1775    o aim_v23 modification for new land model:
1776      a) Treat separately land / ocean / sea-ice surface fluxes
1777         to allow implicit computation of land & sea-ice surface temp.
1778      b) add snow precipitation.
1779    checkpoint52l_pre
1780    
1781    o fix problem (when 1 tile is empty) in min/max monitor.
1782    o fix bug in timeAve (u,vZetatave in common block)
1783    o no restoring terms under ice for pkg/seaice
1784    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1785    o bug fix for pkg/seaice pickups
1786    o change MNC call locations and add coordinate attributes
1787    o mask vorticity at the corner ; affects global_ocean.cs output
1788    o fix ini_curvilinear_grid ; test CS experiments with mpi
1789    o aim.5l_cs: modify sea-ice fraction input file ; update output
1790    o exf: Adding simple range check routine for exf fields after read
1791    
1792    checkpoint52k_post
1793    o removed top-level directory "diags"
1794      - we migrated these functions to pkg/timeave a long time ago
1795    o fixed bug introduced in pkg/monitor
1796    o accuracy ctrlprec = 32 insuffient for gradient checks using
1797      averaged fields (I/O via cost_averages)
1798      -> use ctrl.h in active_file*.F to control I/O precision.
1799    o paramter list of CALL ADTHE_MAIN_LOOP
1800    o added initial do_the_model_io to ecco
1801    o set all ...Freq to zero after cost_final
1802      taveFreq, dumpFreq, pChkptFreq
1803    o MAIN and ECCO differentiability restored
1804    
1805    checkpoint52j_post
1806    o fix nchklev in tamc.h for global_ocean...
1807    o Bringing flow and store directives up-to-date
1808    o Really weird thing!
1809      call do_the_model_io from the_main_loop with parameters
1810      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1811      TAF places a faulty re-call of initialise_varia
1812      after cost_final call which should not be there!
1813    checkpoint52j_pre
1814    
1815    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1816      error messages
1817    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1818    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1819      debug output
1820    o modfied mdsio_writefield.F to handle non-global files under exch2
1821    o update AIM Cubed-Sphere exp (aim.5l_cs):
1822      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1823    o update AIM Equatorial Channel exp:
1824      use standard aim_v23 pkg and change the SST fields to be more realistic.
1825    o globalFile now works with exch2
1826    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1827      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1828    o limit timeave output for hi-res integrations
1829    
1830    checkpoint52i_post
1831    o removed CPP_EEOPTIONS.h from verification/*/code
1832    o updated the tiling for global_ocean_pressure
1833    checkpoint52i_pre
1834    
1835    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1836      the old pkg/aim).
1837    
1838    checkpoint52h_pre
1839    o shortened offending lines in exch2_send_rx?.template
1840    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1841    o genmake2: add build & execute test for NetCDF code
1842    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1843      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1844    o added useSingleCPUIO flag to monitor.F and mon_out.F
1845    o added temporary hack for sea-ice dynamics on the cube:
1846      metric terms are ignored and it is assumed that
1847      there is no sea-ice on cube faces 1, 2, 4, and 5.
1848    
1849    checkpoint52f_post
1850    o added exch2 cube routines to pkg/exch2
1851    o modified hs94.cs-32x32x5 to use it
1852    o added new grid files to hs94.cs-32x32x5
1853    checkpoint52f_pre
1854    
1855    checkpoint52e_post
1856    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1857      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1858    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1859      to work with implicit vertical advection and AB ;
1860    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1861    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1862     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1863    checkpoint52e_pre
1864    
1865    o fix bug in impldiff when Nr=1 or Nr=2.
1866    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1867    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1868    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1869      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1870    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1871    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1872    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1873    
1874    checkpoint52d_post
1875    o re-tiled many expts to allow comparison in multi-processor mode
1876      - updated output accordingly
1877      - changed hs94.128x64x5 to use intial T from file rather than use the
1878        random number generator
1879    o add infrastructure in model routines for fizhi and gridalt packages
1880    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1881    o changes to permit hi-res, cubed-sphere, configuration
1882      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1883      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1884      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1885        of surface winds for the cube
1886      (A verification experiment, based on global_ocean.cs32x15, but with
1887       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1888       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1889       complete with example surface forcing files and matlab scripts to look
1890       at the output and compare it with that of global_ocean.cs32x15.)
1891    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1892       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1893       to conform to the common rule.
1894    o check-in the first version of the coupler + interfaces for multi-components
1895       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1896       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1897       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1898       - ocean and atmos. share the same horizontal grid (no interpolation).
1899       - exchanges between component and coupler is done in forward_step
1900    o new verification experiment, cpl_aim+ocn:
1901       coupled ocean - AIM atmosphere on cs32 grid.
1902    
1903    checkpoint52d_pre
1904    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1905    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1906    
1907    checkpoint52c_post
1908    o Fixing OPTIONS files for use of exf:
1909      - ALLOW_ECCO not needed
1910      - ECCO_CPPOPTIONS.h should not be included from
1911        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1912        as has been the case in the past
1913      - All cal/exf related options are currently set in
1914        single header file. Should remain so until we
1915        agree on a consistent new policy.
1916    o Removed all CPP options for cal package.
1917      cal has no more CPP options.
1918    o modified STOREs in GAD_ADVECTION
1919    o corrected key comp. for passkey
1920    
1921    checkpoint52b_post
1922    o new version: "thsice" of thermodynamic sea-ice pkg:
1923     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1924     - modify fluxes but do not change theta directly;
1925     - light cleaning of bulk_force pkg (still needed with thsice).
1926     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1927       + output_thsice.txt to test thsice & bulk_force pkgs.
1928    o put back grid & coriolis monitor output.
1929    checkpoint52b_pre
1930    
1931    o call "do_the_model_io" at the beginning (=> dump initial state)
1932    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1933    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1934      (need info on NUMBER_OF_PTRACERS)
1935    o missing PTRACERS headers in some routines
1936    o default tamc.h in pkg/autodiff supposed to crash
1937      to ensure proper customization
1938    
1939    checkpoint52a_post
1940    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1941      - moved surfaceTendencyTice from pkg/seaice to main code
1942      - subroutine FREEZE_SURFACE now limits only surface temperature
1943        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1944        => new output.txt for global_ocean.cs32x15 & global_with_exf
1945      - keep the old version of FREEZE for backward compatibility;
1946        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1947      - corresponding modifs for TAF directives
1948    o added surface flux output variables to TIMEAVE_STATVARS
1949    o time-averaged output for pkg/ptracers
1950    o fix problem with ECCO-related divided adjoint
1951      snapshot file was missing some ad-variables,
1952      but no warning issued by TAF
1953    
1954    checkpoint52a_pre
1955    o some bug fixes for #undef REAL4_IS_SLOW
1956    
1957    checkpoint52 = ecco_c52_e35
1958    o after testing adjoints of checkpoint51u_post
1959    
1960    checkpoint51u_post
1961    o this is the post-merge tag of the ecco-branch
1962      (needs another clean checkout and re-testing)
1963    o various natl_box_adjoint configs and results
1964      but no input fields
1965    o obcs adjoint not yet merged!
1966    o adding ECCO global 1x1 and 2x2 degree configs
1967    o updated/extended some store directives for seaice
1968    o pkg/ecco now containes ecco-specific part of cost function
1969    o top level routines the_main_loop, forward_step
1970      supersede those in model/src/
1971      previous input data.cost now in data.ecco
1972      (new namelist ecco_cost_nml)
1973    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1974    
1975    checkpoint51t_post
1976    o this is the pre-merge tag of the ecco-branch
1977    
1978    checkpoint51s_post
1979    o cleanup: removed various obsolete #define-s
1980    o pkg/grdchk
1981      - renamed 'ph-grd 3' to 'grad-res'
1982      - merged from ecco-branch
1983        (remaining bug fixes for obcs gradient checks)
1984      - additional high-precision output for testreport
1985        (grep for 'precision_grdchk_result')
1986    
1987    checkpoint51r_post
1988    o cleaned up or removed CPP_OPTIONS.h files
1989    o updated results for some of the tests to reflect the new
1990      optfiles (-ieee: -O0 instead of -O3)
1991    
1992    checkpoint51q_post
1993    o cd_code:
1994      - moved cd_scheme.F -> cd_code_scheme.F
1995      - separate read_checkpoint from cd_code_ini_vars.F
1996      - separated cd_code part from write_checkpoint
1997      - updated AD_SOURCE, generated .flow
1998      - added CD_CODE_VARS.h to the_main_loop
1999      - Moving cd_code specific store dir.s to pkg/cd_code
2000    o ctrl package totally restructured
2001      - pack/unpack now optional and decoupled from
2002        xx_/adxx_ I/O
2003      - ctrl_pack/unpack cleaned
2004        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2005      - confined inclusion of AD_CONFIG.h to where necessary.
2006    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2007    
2008    checkpoint51p_post
2009    o create initial cd_code package
2010      - WARNING: the initialization of fields within packages
2011        is broken because INI_FIELDS (where READ_CHECKPOINT is
2012        called) is called *before* PACKAGES_INIT_VARIABLES.
2013        This seems to be backwards since
2014        1) its important to initially zero the entire field including
2015           the "halo" region
2016        2) zeroing needs to be done *before* reading pickup info
2017           and the pickup call might or might not happen in any
2018           particular run
2019      - this needs an overhaul for R2
2020    o cleanup verification/*/code/GMREDI_OPTIONS.h
2021    o cleanup testreport
2022    
2023    checkpoint51o_post
2024    o bringing AD-related verif's up to date with genmake2
2025      - carbon/
2026      - global_ocean.90x40x15/
2027      - hs.94.1x64x5/
2028      - (front_relax/ )
2029    o (more) consistent directory structure for AD-related verif.'s
2030    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2031    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2032    o bug fix in find_alpha.F for MDJWF:
2033      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2034        change rho -> rho-rhoConst
2035      - replace call find_rho to find_rhonum
2036    o initialisation of rFlx extended to full array (required by TAF)
2037      and shifted to thermodynamics
2038    o removed PTRACERS.h in ptracers routine
2039    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2040    o Correcting initialisations for fVerU, fVerV.
2041    o helping TAF to recognize dependency on kUp for
2042      fVerU, fVerV
2043    o Replacing delZ by delR in pkg/ctrl/
2044    checkpoint51o_pre
2045    
2046    o undid all of cp51 pending some cleanups and discussion
2047    o added the [#include "AD_CONFIG.h"] statement to all files that need
2048       it for adjoint/tl #defines
2049     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2050     o removed tools/genmake since it no longer works
2051    
2052    checkpoint51n_post
2053    o modifications to make FREEZE flux visible to pkg/kpp
2054      - moved surfaceTendencyTice from pkg/seaice to main code
2055      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2056      - subroutine FREEZE now limits only surface temperature
2057        (this means new output.txt for global_ocean.90x40x15,
2058         global_ocean.cs32x15, and global_with_exf)
2059    o added surface flux output variables to TIMEAVE_STATVARS
2060    
2061    checkpoint51n_pre
2062    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2063    o added [#include "AD_CONFIG.h"] to all files that use the following
2064      defines:
2065      - ALLOW_ADJOINT_RUN
2066      - ALLOW_TANGENTLINEAR_RUN
2067      - ALLOW_ECCO_OPTIMIZATION
2068    
2069    checkpoint51m_post
2070    o incorporating changes to get TAMC/TAF working in genmake2
2071      - added new TAMC/TAF targets to the Makefile
2072      - various cleanups related to package handling
2073      - these changes should have no impact on the forward model
2074    
2075    checkpoint51l_post
2076    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2077     - faster algorithm for cal_addtime.F
2078     - higher precision arithmetic, where needed
2079     - pkg/exf *startdate variables changed from calendar date to
2080       model integration time
2081    
2082    checkpoint51l_pre
2083    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2084    o enable to apply restoring on S & T only in a latitude band.
2085    o update output (external_forcing_surf modif. change truncation errors)
2086       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2087    
2088    checkpoint51k_post
2089    o change default to: useNHMTerms=.FALSE.
2090     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2091       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2092     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2093        exp1, ideal_2D_oce
2094     - change data file of oceanic exp (leave the results unchanged for now)
2095       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2096    o set gravitySign automatically according to the vertical coordinate used
2097      (and change sign: back to "logical" value: +1 when R increases downward)
2098    o added an include barrier to the default CPP_OPTIONS.h and
2099      removed the #include "PACKAGES_CONFIG.h" from it
2100    o fix a bug in mom_fluxform (from chk51j_post)
2101    
2102    checkpoint51j_post
2103    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2104    o adjusted some flow directives (dynamics, thermodynamics)
2105    o added cubed-sphere case to test cost function
2106    o heckpoint_lev?_directives.h now include
2107      pkg-specific directives, whenever those are enabled.
2108    o Moving pkg-specific flow directives to corresponding pkg
2109      Moving pkg-specific differentiation list to corresponding pkg
2110      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2111      ---> conventions are
2112           - pkg_ad.flow
2113           - pkg_ad_diff.list
2114           - pkg_ad_check_lev?_dir.h
2115    
2116    checkpoint51i_post
2117    o merge of the branch-genmake2
2118      - knowingly breaks the older genmake
2119      - automatic generation of all ALLOW_${PKG_NAME} defines
2120      - new testreport supersedes older testscript
2121    o large number of package inclusion and header cleanups
2122    checkpoint51i_pre
2123    
2124    o new output for adjoin of global ocean vector invariant
2125    o fix for checkpoint of thermodynamic seaice and bulk_force
2126    o Steph gchem various cleanups
2127    
2128    checkpoint 51h_pre
2129    o fixed some single quotes
2130    o modify gchem pkg to be more versatile
2131    o modifications to clean up dic pkg
2132    o add pkg/cfc
2133    
2134    checkpoint51g_post
2135    o provide links for ARPACK and ADM*TLM
2136    o start removing verification/vero/
2137    o update AD-related stuff
2138      (in particular some IF-statements in model/src/ routines)
2139    o adding to verification/global_ocean.90x40x15/ adjoint of
2140      vector invariant setup
2141    
2142    checkpoint51f_post
2143    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2144    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2145      of tracer Green's fucntions for ocean inversion project.
2146    
2147    checkpoint51f_pre
2148    o Added on-the-fly spatial interpolation capability
2149        "USE_EXF_INTERPOLATION" to pkg/exf.
2150      - This is a temporary Cartesian-grid hack until
2151        the super-duper ESMF coupler becomes available.
2152      - See verification/global_with_exf/README for usage example.
2153      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2154        flags and modified pkg/seaice accordingly.
2155    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2156        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2157        non-local transport term.
2158    
2159    checkpoint51e_post
2160    o pkg/mom_vecinv:
2161      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2162      - add time-ave diagnostic of vorticity advection.
2163    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2164    o atmospheric geopotential: - include water vapor effect;
2165                                - use p^kappa in p* scaling.
2166    o land pkg: read initial state from files.
2167    o AIM : add stratospheric drag in the upper level
2168    
2169    checkpoint51d_post
2170    o change function ILNBLNK (=> last non-blank char.) to return zero
2171      (instead of the string length) when the string. char is empty
2172    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2173    o modif's to restore TAMC compatibility
2174      - avoid "_d" constructs in PARAMETER declarations
2175      - avoid interrupting lines by comment lines
2176    o Use cluster local disks for purely local I/O
2177      vs. globally visible disks needed for ctrl stuff
2178      (merged from ecco-branch)
2179      - new active_file_loc... and mdsio_..._loc routines
2180      - affected packages: autodiff, ctrl, grdchk, mdsio
2181    
2182    checkpoint51c_post
2183    o introducing integer flag debugLevel
2184      - debLevZero: suppress all output
2185      - debLevA: standard
2186      - debLevB: equivalent to current debugMode=.TRUE.
2187    o introducing pathname variable mdsioLocalDir for mdsio
2188      that can be specified at runtime
2189      (relevant for cluster I/O to local disk)
2190    `
2191    >>>checkpoint51b_post
2192    adjoint of ptracers
2193    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2194    o extended state in checkpoint_lev?, etc.
2195    o alternative ctrl/cost with tr1 or ptracer
2196    o new comlev1_bibj_ptracers
2197    o new ptracers.flow
2198    o made ptracers_forcing same as external_forcing_s
2199    o added verification for adjoint with ptracers
2200      - adm. grdchk fail so far
2201      - tlm. grdchk OK
2202      - checked tapelev/comlev recomputations: OK
2203    <<<checkpoint51b_pre
2204    
2205    checkpoint51a_post
2206    o added code for biogeochemistry package
2207      - new pkgs: dic, gchem
2208      - new subroutine in ptracers
2209    o modify code for biogeo packages
2210      - in model/src and pkg/ptracers
2211    
2212    checkpoint51
2213    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2214      - autodiff, ctrl, exf, grdchk, seaice
2215      kept separate packages
2216      - cost, ecco, obcs
2217    o updating verification/internal_wave, verification/lab_sea
2218      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2219    
2220    checkpoint50i_post
2221    o Preparing next differentiable checkpoint and sync
2222      of MAIN vs. ecco-branch
2223      - 1st step: this one is differentiable
2224      - 2nd step: next(! not this) checkpoint will have updated packages
2225                  from ecco-branch)
2226    
2227    checkpoint50h_post
2228  o new package "land": provide surface BC for AIM.  o new package "land": provide surface BC for AIM.
2229  o pkg/ptracers: apply exchange to all tracers after reading a pickup.  o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2230  o AIM: use true log-P extrapolation for near surface temp (= as in  o AIM: use true log-P extrapolation for near surface temp (= as in
2231      F.Molteni paper) ; update aim.5l_cs output.      F.Molteni paper) ; update aim.5l_cs output.
2232  o New variable in PARM03 for more flexible pickups  o New variable in PARM03 for more flexible pickups
2233    o somewhat cleaned package initialisation sequence for
2234      ctrl/ cost/ ecco/ in packages_... routines
2235    
2236  checkpoint50g_post  checkpoint50g_post
2237  o merged with release1_p17 (pkg/seaice and verification/lab_sea)  o merged with release1_p17 (pkg/seaice and verification/lab_sea)

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