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revision 1.198 by edhill, Tue Oct 28 22:57:59 2003 UTC revision 1.752 by jmc, Tue Dec 5 22:15:47 2006 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 CG2D: use pre-computed solver main-diagonal (stored in common block);
8      this affects truncation error ; generate new output file for exp. which
9      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
10        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
11        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
12        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
13        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
14        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
15    o start implementation of deep-atmosphere and anelastic formulation
16    o verification: remove 2nd copy of input files and use script "prepare_run"
17      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
18    o mom_common/vecinv/fluxform: fix a few initialisation isssues
19    o profiles: fix for multithreaded case
20    
21    o diagnostics: rename few diags:
22      s/'PRESSURE'/'RCENTER '/g
23      s/'TICE    '/'oceFreez'/g
24      s/'TAUX    '/'oceTAUX '/g
25      s/'TAUY    '/'oceTAUY '/g
26      s/'SWFLUX  '/'oceQsw  '/g
27      s/DIFx/DFxE/g
28      s/DIFy/DFyE/g
29      and add few ocean-forcing diagnostics:
30      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
31    o modifications to pkg/seaice/growth.F and budget.F, which change results of
32      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
33      as actual snow thickness.  It now refers everywhere to effective snow
34      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
35    
36    checkpoint58r_post
37    o modifications to pkg/seaice/growth.F, which change results of
38      lab_sea experiment: fixes pertain to melting snow over open water, to
39      masking EVAP under sea ice, and to using the correct AREA variable for
40      computations of EVAP, PRECIP, HSNOW, and GHEFF
41    o add ability to read bathy, salt, and theta using MNC (off by def)
42    o add flooding algorithm and advection of HSNOW for pkg/seaice;
43      both are turned off by default and do no change any results
44    o seaice advection with pkg/thsice: a step toward the use of non-linear
45      advection scheme, but #ifdef or commented out for now (requires more EXCH).
46    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
47      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
48      in natl_box (affects results @ truncation level: update output.txt)
49    o multi-threading and IO:
50      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
51      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
52        (needed to work with SingleCpuIO): tested in all verif. exp.
53    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
54      affects the results (but none of the verification test uses this scheme).
55    o Adding some pkg/diagnostics capability to pkg/seaice
56      (will certainly be subject to changes)
57    o ctrl: adding new control variables:
58      lwflux, lwdown, evap, snowprecip, apressure, runoff
59    
60    checkpoint58q_post
61    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
62      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
63      high_res_cube configuration by 4% on Columbia.
64    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
65      add (in global_with_exf/code) a version of EXF_INTERP_READ without
66      dynamical allocation (seems to work in multi-threaded).
67    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
68      single CPU io) so that TAF does not have to see EESUPPORT.h
69    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
70    
71    checkpoint58p_post
72    o obcs: stop if obcs is used with useCDscheme = .true.
73    o shelfice:
74     - fix a sign error so that no slip at shelfice interface works
75     - remove stop for combination non-hydrostatic code and shelfice. That does
76       not mean, that the results are correct, but at least they are numerically
77       stable
78    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
79    o added adjoint exch routined for all exch*3d* routines
80      and updated flow directives
81    
82    checkpoint58o_post
83    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
84      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
85    o change controling S/R for writing pickup file (new S/R do_write_pickup)
86      and clean-up reading/writing of pickup files.
87    o fix local version of read/write pickup (NH part) in rotating_tank/code
88    o simplify EXCH interface:
89     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
90     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
91    o added the regrid package
92    o shelfice:
93     - add a simple boundary layer scheme to reduce noise
94     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
95    
96    checkpoint58n_post
97    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
98       local variable (not in common block).
99    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
100      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
101      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
102        to work with SingleCpuIO.
103    o add "_d 0" to real constant of pkg/cfc subroutines ;
104       update exp. cfc_exemple & tutorial_cfc_offline output files.
105    o multi-threading and IO:
106      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
107        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
108      - barrier before and after reading.
109      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
110      - avoid using MDS_WRITELOCAL for LAND pkg output.
111      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
112        common-block variables ; Allows multi-threading with master-thread IO.
113    o change default MAX_NO_THREADS from 32 to 4 ;
114      and stop cleanly when MAX_NO_THREADS is too small.
115    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
116    
117    checkpoint58m_post
118    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
119       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
120    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
121       keep global_ocean.90x40x15 (for AD testing) with former secondary test
122       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
123    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
124        add MITgcm_tutorials (= code + all the tutorials)
125    o ecco, option to compute cost for total ssh (mean+anom)
126    o consistent with addition of ptracer and ssh in pkg/profiles
127    o profiles: adding ptracer and ssh
128    o testreport: change multi-test output-file name
129      (from output.txt.{name} to output.{name}.txt)
130    o profiles: now ok for mutli-tiles case
131    o seaice: add 4 parameters for different advection schemes for area,
132      (effective) seaice thickness, enthalphy, and snow height. Their default
133      is the standard parameter SEAICEadvScheme
134    o calc_gw:
135     - add cosFacU in zonal viscous flux (harmonic.visc.).
136     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
137       of tutorial_plume_on_slope.
138    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
139    o calc_gw: true flux-form, account for horizontal grid spacing.
140      update rotating_tank results, but not plume_on_slope (affected at
141      truncation level, 11 digits).
142    
143    checkpoint58l_post
144    o calc_gw:
145     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
146     - remove side-drag for now (need to fix it); update plume_on_slope results.
147     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
148    o commit code to make SST/SSS weights spatially variable
149      (based on either variable in-situ or variable initial T/S weights)
150    o pkg/ecco:
151      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
152        now based on horizontally varying weights wthetaLev, wsaltLev
153      * cost_averagesflags now returns year indices in addition to day, month
154      * sflux balance is performed on annual basis
155        (sflxumm, sfluxmm2, bal_sfluxmm)
156      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
157        including separate counting and multipliers
158    o pkg/rbcs
159      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
160    
161    checkpoint58k_post
162    o testreport:
163     - always build in dir. "build" (if not there, mkdir build instead of building
164       & running in input)
165     - run in dir run (if it exists), in build otherwise.
166     - call prepare_run (if input/prepare_run exists)
167     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
168    o pkg/exf modifications to interpolation and rotation routines for more
169       reasonable treatment of North Pole singularity: for tracers North Pole
170       value is set to northernmost zonal-mean value, for zonal velocity it is
171       set to zero, and for meridional velocity it is set to northernmost value.
172    o pkg/exf/exf_check_range.F
173     - add tile index to diagnostics and move stop statement to the very
174       end of the routine.
175    o pkg/diagnostics: (diagnostics_main_init.F)
176      define title of isomorphic variables according to the current config.
177    o pkg/thsice with pkg/seaice dynamics:
178    - fix domain of computation (interior only, required for exf) and do exchanges
179    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
180    o towards a standard way of dealing with multi-threading in MONITOR
181      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
182    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
183       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
184    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
185    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
186    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
187       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
188    o tracer advection:
189     - clean-up and simplify calc_common_factors.F
190     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
191       advection subroutine (but still not used within DST advection S/R)
192    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
193    
194    checkpoint58j_post
195    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
196      from file (collects calls previously in FORWARD_STEP)
197    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
198    o adjoint store dir. adjusted accordingly
199    o genmake2
200      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
201    
202    checkpoint58i_post
203    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
204      on wind stress (SEAICEstressFactor defaults to 1.)
205    o Total number of Timers is finite (<=40): comment out 2 non-essential one
206      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
207    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
208      on CS-grid: no longer loosing mass.
209    o exf & curvilinear-grid: no longer modify longitude xC & xG.
210    o pkg/ggl90: fix sloppy output and fix a bug
211    o pkg/seaice: added SEAICEuseEVPpickup parameter
212      - Set to false in order to start EVP solver with
213        non-EVP pickup files when using SEAICEuseEVP
214      - fix sign error in diffusion in seaice_calc_rhs
215    
216    checkpoint58h_post
217    * Modifications for bottom topography control
218      o replace hFacC by _hFacC at various places
219      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
220      o add non-self-adjoint cg2d_nsa
221      o update autodiff support routines
222      o re-initialise hfac after ctrl_depth_ini
223      o works for 5x5 box, doesnt work for global_ocean.90x40x15
224    * Adding verification for 5x5 box (4-layer) bottom topography control
225    
226    checkpoint58g_post
227    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
228       used for mean seasonal cycle, mean diurnal cycle); add an example
229       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
230    o pkg/ggl90:
231      - add parameter (minimum surface kinetic energy)
232      - fix bug (avoiding division by zero)
233    o couple pkg/thsice to pkg/seaice:
234      - modify advection in seaice to accomodate new scalar fields to be advected
235      - only muliDimAdection scheme work with seaice/thsice
236      - mapping of thsice-variables to seaice-variables, back and forth
237      - does not break the verification experiments, but does not give the
238        desired results either
239    o pkg/seaice
240      - make (default) second order advection a bit less confusing?
241    
242    checkpoint58f_post
243    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
244      to pkg/seaice):
245      - new routines thsice_map_exf and thsice_get_exf provide the interface
246      - add an additional formal parameter to thsice_solve4temp
247    o pkg/exf:
248      - add new fields wspeed, snowprecip (to be able to couple to thsice)
249      - correct Stefan-Boltzmann constant
250      - new parameter for longwave surface emittance
251      - separate some stuff from exf_bulkformulae into new routines  
252        exf_radiation, exf_wind
253      - add new parameters and constants: longwave emissivity for ocean, ice
254        and snow, evaporation parameters over ice
255      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
256        either wind from stress or stress from wind
257    o pkg/thSIce:
258    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
259    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
260       and THSICE_CALC_THICKN
261    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
262    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
263      to make debugging easier.
264    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
265    o pkg/bulk_force:
266      - clean-up comments and parameters ;
267      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
268    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
269      generate new output for test-experiment: aim.5l_cs.thSI
270    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
271      testreport accordingly
272    
273    checkpoint58e_post
274    o SEAICE_CGRID adjoint done
275    o R_STAR adjoint implemented.
276      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
277      * need to sort out init. of h0facc, etc.
278    o Make pkg/profile fully independent of ecco,cost, etc. stuff
279      to be able to use it in pure forward.
280    
281    checkpoint58d_post
282    o upgrade simple test-experiment to tutorial example:
283     step.1: duplicate the experiment and (step.2) will remove the old copy.
284      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
285      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
286      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
287      tutorial_global_oce_biogeo    <- copy of dic_example
288      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
289      tutorial_plume_on_slope       <- copy of plume_on_slope
290      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
291      tutorial_global_oce_optim     <- empty for now (David ?)
292      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
293     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
294    o correct a sign problem in cost_scat.F
295    o obcs and ptracers: fix boundary conditions for advections schemes
296      with larger stencil
297    o thsice adjoint: start
298    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
299      completeness
300    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
301      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
302    o ptracers adjoint:
303      * avoid extensive recomputatations
304      * fix missing re-init. of gptr (missed by TAF)
305    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
306      me to turn off the excessive output to STDOUT that this package produces
307    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
308      and add those terms in Vector-Invariant formulation.
309    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
310      if the control period (xx_hfluxperiod etc) is 0
311    o in profiles pkg, clean routines and fix details
312    o in ecco pkg, reading ssh data:
313      fix problem in case the model does not start at iter0=0
314    o fix mnc-pickup/restart for ptracers
315    o new package prifiles:
316      code to compute profile-based cost by Gael Forget
317      (modifs in ecco, ctrl, autodiff)
318    o Benign bug fix in initialization (spotted by M. Mazloff) of
319      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
320    
321    checkpoint58c_post
322    o adjoint: finish NLFS adjoint and provide reference output in
323      verification/global_ocean.90x40x15/results_ad_nlfs
324    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
325      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
326      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
327      with SEAICE_CGRID defined.
328    o move calendarDumps from "data" to "data.cal" and clean-up the code
329      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
330    o add useEXF & useCAL flags (for now, set in hard-coded way)
331    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
332      (were missing in NH mode, and wrong in quasihydrostatic mode).
333      waiting for Chris updated version of calc_gw to add those CALLs.
334    o fix bug in quasihydrostatic S/R ;
335      add a test for this option: global_ocean.90x40x15.qshyd
336    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
337      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
338    o add on/off flag useOffLine for package OFFLINE
339    o seaice:
340      - modify advection so that it works also on the C-grid
341      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
342        problem in multi-tile runs with C-grid
343      - add flags for clipping ice velocities and/or masking solver forcing
344      - fix drag (ocean on ice) formulation and a bug that caused noise in the
345        C-grid solver
346      - added a few comments to seaice_diffusion.F
347      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
348        are now exclusive)
349      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
350        required re-ordering the code a little:
351       + make DAIRN global variable (defined in SEAICE)
352       + move computation of the viscosities eta and zeta into a new separate
353         routine (because I need to recompute them in seaice_ocean_stress.F)
354    
355    checkpoint58b_post
356    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
357      update output.txt of exp. aim.5l_cs.thSI
358    o various mnc cleanups and improvements:
359      + shrink lookup tables by factor of ~4
360      + better error reporting when running out of lookup space
361      + able to handle longer path/file names (up to 500 chars)
362    o adjoint:
363      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
364      - TBD: "hidden" mom_vecinv recomp. in dynamics
365    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
366     (allow to differentiate between forcing components using new integer flags:
367      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
368     and add new flag to put Dissipation tendency out of Adams-Bashforth.
369    o ecco
370      - enable trend removal from SSH anomaly obs.
371    o adjoint
372      - a fix for PmEpR when #undef EXACT_CONSERV
373      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
374      - try to fix "hidden" recomp. in forward_step for NLFS
375        (NLFS seems broken sometimes after I checked it in)
376    o seaice:
377     - add c-grid version of the dynamic solver:
378       + three new routines that are the c-grid substitute lsr, dynsolver
379         and ostres
380       + put a few fields that were local to dynsolver into global common
381         blocks, so that I can move the computation of stresses etc into
382         seaice_lsr (saves coding but may break the adjoint).
383     - replace more hardwired parameters by runtime parameters
384     - add ice masks that mask the rhs of the implicit solvers where there
385       is no ice (commented out in seaice_dynsolver, because i am not sure
386       if this works properly), eventually this should replace the clipping
387       of ice velocities in seaice_dynsolver to +/-40cm/s.
388    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
389      include it only where its needed
390    o move balancing of fluxes before the call of external_forcing_surf
391    o seaice:
392      - correct units of turning angles (now they are really in degrees)
393      - move computation of GWATX/Y out of main routine into dynsolver
394      - initialize GWATX/Y in seaice_init
395    o Apply mask on Fresh-Water flux (needed for SSH forcing).
396      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
397    o seaice: add runtime flags for turning angles (default to zero)
398    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
399      and trend from exf forcing and ctrl control adjustments
400    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
401      (since checkpoint57x_post)
402    o change the default rotation period to 86164.s = the Earth rotation
403    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
404      and based on a reference stratification. Tested within hs94.cs-32x32x5.
405    o seaice advection: add code for choosing between the default (2nd order
406      central differences) and multiDim advection schemes provided by
407      pkg/generic_advdiff
408    o seaice:
409      - removed all references to SEAICE_GRID.h fields from
410        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
411        (cubed-sphere configuration will change a little)
412      - grid computations in seaice_init are obsolete now.
413      - cleaned up code a little so that is easier to read (hopefully).
414      - added new (better?) discretizations of default advection and diffusion
415        (turn on with SEAICEuseFluxForm)
416      - replace 1 in 3d global fields by kSurface in growth.F
417      
418    checkpoint58a_post
419    o seaice:
420      - bug fix in advect.F
421    o shelfice:
422      - separate shelfice load anomaly from pload (breaks with time
423        dependent forcing), => introduce constant field shelficeLoadAnomaly.
424        Its default is 0., but it may be computed more cleverly from (unknown)
425        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
426        done offline. A good approximation of the pressure load anomaly is
427        necessary to avoid large initial adjustment processes underneath
428        deep-reaching shelfice.
429      - small fix in ISOMIP shelfice_thermodynamics
430      - add more sophisticated thermodynamics of Hellmer (1989), this is
431        now the default
432      - give a few constants more intuitive names
433    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
434      if bulk formulae are used in long integration (especially EmPmR). Turn
435      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
436      if balancePrintMean, the imbalance that is substracted is printed to
437      STDOUT.
438    o fix bug (typo) in obcs_apply_eta.F
439    o add a new package shelfice which enables us to model the circulation
440      underneath shelf-ice with draughts of hundreds of meters.
441     - works
442     - to do: + include improved thermodynamics
443              + check whether kSurfC (from model/inc/SURFACE.h) can be used
444                instead of new field kTopC
445              + can we use topoFile, Ro_surf and existing code in ini_depth.F
446                instead of new field R_shelfIce and new code in ini_depth.F
447                and ini_mask_etc.F?
448              + adjust vertical mixing schemes?
449    o seaice pkg:
450     - add a cpp-flag to include a simple formula for a salinity dependent
451       freezing point of sea water at the surface
452     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
453       meridional stresses are now different (and hopefully correct)
454    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
455       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
456       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
457    o pkg/diagnostics: add options and parameters for regional-statistics
458       diagnostics ; define regions by reading a region-mask from a file
459       (might add other options later)
460    o pkg/bulk_force:
461     - add option and parameters to use AIM surface-flux formulae.
462     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
463       others forcing fields (defined in PARM05, parameter file "data") are loaded
464       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
465     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
466     - use the right EXCH call for uwind,vwind (to work on CS-grid).
467     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
468       and parameters (note: calcWindStress replaces .NOT.readwindstress).
469     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
470    
471    checkpoint58
472    o add "--embed-source" option to genmake2 which, when the supporting
473      tools can be compiled (as determined by genmake2) will turn on the
474      embed_files package which then embeds the entire MITgcm source code
475      (*.[fFhc] + Makefile) used for the build within the executable
476      - requested by CNH but off by default
477      - adds a paltry <9MB to the mitgcmuv executable in most cases
478      - only writes the output when useEMBEDSRC in eedata is true
479    o clean up 3-dim. relaxation codes:
480      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
481      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
482      * Thanks to Tom Haine for testing!
483    
484    checkpoint57z_post
485    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
486      affects output (@ truncation level) of exp. plume_on_slope ; updated.
487    o fix the pickup behavior for obcs in combination with ptracers
488    o fix a bug in ptracers_external_fields_load
489    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
490      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
491    o transfered surface NH pressure to eta field (if exactConserv).
492    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
493         and update lab_sea output.txt file.
494    o completing 3-dim. relaxation code: additional term
495         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
496      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
497      * At compile time, in "EXF_OPTIONS.h" set
498          #define  ALLOW_CLIMTEMP_RELAXATION
499          #define  ALLOW_CLIMSALT_RELAXATION
500      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
501          tauThetaClimRelax3Dim = 15552000.0,
502          tauSaltClimRelax3Dim  = 15552000.0,
503      * 3 cases:
504          1) Use a constant-in-time 3-dim. field
505          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
506          3) Real-time relax. to time-evolving prescribed field
507    o Adding Laplacian-type smoothness constraint on
508      initial and boundary (forcing) controls (ic, bc)
509      * enable at compile-time via
510        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
511      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
512      * Absolute scale somewhat unclear so far
513      * no area weighting was included since no other cost term does so far
514    
515    checkpoint57y_post
516    First step for a NLFS adjoint
517    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
518    o new init. routines for calc_r_star, calc_surf_dr
519    o still need to deal with ini_masks_etc
520    o testreport seemed happy
521    checkpoint57y_pre
522    
523    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
524    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
525    o add new offset feature to offline pkg (plus minor cleanup)
526    o cfc fixes for final year of integration
527    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
528      be in GCHEM_OPTIONS).
529    
530    checkpoint57x_post
531    o fix testreport Pb in multiple test experiment.
532    o cleanup our namelist syntax in verification:
533      - make it more F95 standards compliant (some work still needed)
534      - allows the vast majority of our tests to work with gfortran
535    o Non-Hydrostatic:
536     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
537     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
538    o Allow to apply AB on T,S rather than on AB(gT,gS):
539     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
540     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
541       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
542     - need a "clever" read_pickup to restart from the other AB formulation
543    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
544    o remove some unused variables (reduces number of compiler warnings)
545    o adjoint
546      * Disable useVariableViscosity for adjoint for time being
547        (there are a number of extensive recomputations)
548      * Initialize certain variables needed for adjoint
549    
550    checkpoint57w_post
551    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
552                 fix the singleCpuIO RS version of MDSWRITEFIELD
553       and add a WARNING if using globalFiles=T with multi-processors.
554    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
555      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
556    o tracer advection scheme:
557      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
558       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
559       was not very convenient).
560      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
561       (further tests needed for the implicit DST & Flux-Limiter schemes).
562    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
563      and sRef for convenience, handy, when you want to initialize
564      ptracers in a large domain with a constant non-zero value. Also,
565      untangle ptracers_init.F a little.
566    
567    checkpoint57v_post
568    o change dome exp. to use variable viscosity in side-drag terms.
569    o remove all the files from the cfc_offline test since they are now
570      incorporated into tutorial_cfc_offline which has been producing
571      identical results for a few days of testing
572    o add new parameter: sideDragFactor to enable half-slip-side BC
573      and change side-drag S/R to use viscosity from mom_calc_visc
574      (can switch back by setting sideDragFactor=0.); affects results at
575      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
576       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
577    o vorticity & strain are now computed without masking, to account for
578      no-slip-side BC in variable viscosity calculation ; mask is applied
579      anyway later on, before computing advection/coriolis terms.
580    o modify exp4 to test new obcs support for reading from external files
581      and for passive tracers
582    o fix behavior of ptracers_monitor when monitor output is written to a
583      netcdf-file; still not independent of monitor.F (writes in the same
584      file).
585    o change default value of tRef (put a uniform, meaningful value for ocean
586      & atmos) and initialize sRef (was missing, as Martin mentioned).
587    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
588      to be proportional to enstrophy dissipation length.  Thus,
589       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
590      This is now consistent with Smagorinsky and with the manual.
591    
592    checkpoint57u_post
593    o OBCS and PTRACERS: add open boundary support for passive tracers
594      - either use homogenous (pseudo) v.Neumann conditions or prescribe
595        OB-values from file; this is not different from the way theta and salinity
596        are treated
597      - however, Orlanski-radiation conditions are not supported, and the model
598        will stop if you use pTracers and Orlanski at the same time.
599      - beefed up the rountine obcs_external_fields_load: now only those open
600        boundary values are overwritten with values from files for which there
601        are really files, otherwise the OB-fields remain untouched. This makes
602        it possible to use different OBs at different ends of the domain (as
603        with EXF)
604    o reduce number of exch calls in shap_filt (s2).
605    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
606      truncation level) 4/5 MLAdjust test results (11&12 digits match).
607    
608    checkpoint57t_post
609    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
610    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
611      same truncation, independent of the face number: affects affects several
612      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
613    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
614      note that biharmonic viscosity + no-slip was not tested in any experiment.
615    o fix bug in non-linear free-surf side-drag ; generate new output for
616      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
617    o make mnc honor the writeBinaryPrec flag for most kinds of output
618    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
619    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
620      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
621    o add brackets in multi-terms sum to get same truncation, independent of
622      the face number (manage to get exactly same value of gU,gV at the cs-edge)
623      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
624    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
625      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
626      a maximum grid-scale Reynolds number.  Also, changes all length calculations
627      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
628      Suggested values of viscosity parameters found in mom_calc_visc.
629      Many new viscosity diagnostics available.
630    
631    checkpoint57s_post
632    o Add clearing-house for viscosity calculations, mom_calc_visc and
633      correct numerous bugs in LeithD and Smagorinsky discretizations.  
634      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
635      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
636      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
637      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
638      The Strain-Tension form is now called with useStrainTensonVisc=.true.
639      ViscAhStrain and viscAhTension are now retired.
640    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
641    o In response to JMC's bug report, genmake2 now ignores any soft-links
642      that it finds in the *current* directory when searching for files.
643      Soft-links found in any other source directories will still work as
644      they did before.
645    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
646      a C routine to unlimit the stack size
647    o mnc-ify pkg/aim snapshot vars
648    o mnc-ify pkg/land as requested by Daniel
649    o various changes to mnc including:
650      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
651      - output can now be grouped so that all files within a group
652          change the ITER portion of their names in lock-step together
653      - can now read ("global") PER-FACE (in addition to PER-TILE) files
654          and works with both EXCH1 and EXCH2 (but needs more testing)
655      - writing works for all verification test cases w/ g77 on Linux
656    
657    checkpoint57r_post
658    o make MNC variable initialization happen earlier
659    o add diagnostics for (almost) each term of the momentum Eq.
660    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
661    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
662    o remove MINIMAL_TAVE_OUTPUT option ;
663      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
664    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
665      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
666    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
667    o add time-dependent SST, SSS control
668    o cost terms in ecco/ modularized (new cost_generic.F)
669    o cost_averages routines are modularized (new cost_averagesgeneric.F)
670    o new infrastructure for seaice model vs. obs misfits in seaice/
671      * driver from the_main_loop.F is seaice_cost_driver.F
672      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
673      * gradient check in Exp. 6a of natl_box_adjoint/
674    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
675      (see README file)
676    
677    checkpoint57q_post
678    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
679    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
680      - bug was reported by Jean-Michel and Ian Fenty
681    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
682      update exp. cpl_aim+ocn output.
683    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
684      Needed for high-res. runs with large global files
685      to be able to limit tapelev size
686    o Changed some tests for adjoint:
687      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
688      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
689      * global_ocean.90x40x15/ back to default 3-level checkpointing
690    o Modifications to enable scripted COMMON to MODULE conversion
691      * verification/OpenAD/code/ has necessary scripts and description;
692      * converts, compiles and runs successfully;
693    
694    checkpoint57p_post
695    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
696    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
697      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
698    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
699    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
700      (was already the case for dissipation with mom_vecinv,
701       and also the case for grad.PhiHyd when staggered-timeStep)
702      This will allow to put dissipation out-off the AB time-stepping.
703     Unfortunately, affects truncation error. Update output of exp. that "fails"
704      (cg2d matching number) and leave the others for later: front_relax(10),
705      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
706      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
707    
708    checkpoint57o_post
709    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
710      (2) its ready to be documented during the 20050801 DocFest
711    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
712      for ideal_2D_oce and lab_sea on linux_ia32_g77
713    o set to #undef CTRL_SET_OLD_MAXCVARS_30
714      in global1x1_tot/code_seaice_adj to access indices 32, 33
715      (worth another tag)
716    
717    checkpoint57n_post
718    o adding precip control xx_precip 32
719    o adding swflux control xx_swflux 33
720    o Replacing 10 forcing penalty cost routines by 1 generic.
721    o Implementing partitioning in time-mean and variable adjustment
722      for atmos. state.
723    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
724    o in natl_box_adjoint:
725      * updated exp 1 to 10
726        (but does not have time-mean vs. variable split results yet)
727    o updated global1x1/*_seaice_adj/
728      to incorporate latest changes
729    o enable useSingleCpuIO for mdsio vector routines
730      (applies in particular to tapelev I/O)
731    o removed inefficient K-loop in all active_file*control*.F
732    
733    checkpoint57m_post
734    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
735      and advect_cs (use EXCH-2 and standard cs-32 grid files).
736    o pkg/exch2: filling of face-corner halo regions is optional
737      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
738    
739    checkpoint57l_post
740     tag before updating tutorials (pre-release-2)
741    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
742       for output and interpolation of input fields onto model grid)
743    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
744       Affects results of exp. rotating_tank ; update output.txt.
745    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
746          and taking the square quantity and/or using a fraction-weight field.
747    o fix aim_diagnostics_init.F mate numbers.
748    o add mnc output capability to diagnostics/diagstat and update
749      our cvsignore files for the ACSII output generated
750    
751    checkpoint57k_post
752    o lab_sea now uses diagnostics package and provides a suite of
753      new EXF diagnostics output.
754    
755    checkpoint57j_post
756    o exf
757      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
758        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
759        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
760      * extended diagnostics output
761        - now includes all EXF variables
762        - hs, hl moved to common block
763        - separate S/R for diagnostics, called after ctrl vector is added
764        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
765        - EXFqnet contains true Qnet (i.e. includes qsw)
766      * updated verif. lab_sea, global_with_exf
767      * Rearranging hflux (exf_mapfields -> exf_getforcing)
768        to ensure that diagnostics sees a true EXFqnet
769    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
770    o diagnostics pkg: change pointers so that 1 diagnostic can be used
771      several times with different frequencies.
772    o mnc-ify the thsice package as requested by Daniel Enderton
773      - the monitor--MNC output needs work
774      - many attributes need to be added (most are currently blank)
775    o mnc-ify theaim_v23 package as requested by Daniel Enderton
776      - many attributes need to be added (most are currently blank)
777    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
778    o add Sadourny like discretization to the 4th.O vorticity advection scheme
779    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
780      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
781         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
782    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
783     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
784    
785    checkpoint57i_post
786    o Diagnostics package was changed: diagnostic allocation is now deactivated
787      by setting an empty file name in the namelist (used to be by setting 0 frequency)
788    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
789      add 1rst Order upwind vertical Shear.
790    o add a quick fix for A/B checkpointing in OFFLINE mode
791    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
792      end-run around the C/Fortran linking horror in eesup/src/timers.F
793    o added pkg/runclock: allows user to terminate run based on wall clock
794    o added non-hydrostatic scaling parameter: nh_am2
795    o pkg/my82: futile attempt to make results compiler-independent by adding
796      some "_d 0", etc. no effect.
797    o for mnc output, fill the 'T' coordinate var with myTime and create a
798      separate 'iter' variable for iteration count
799    o pkg/diagnostics:
800      add new capability: output of Global/Regional & per-level statistics ;
801      tested against monitor output (including land & thSIce) on various exp.
802    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
803    
804    checkpoint57h_done
805      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
806      data.diagnostics, data.gchem, data.ptracers) is done.
807    
808    o pkg/diagnostics: prepare for Global/Regional statistics.
809      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
810    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
811      and rename it: DIFFERENT_MULTIPLE
812    
813    checkpoint57h_post
814    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
815    o pkg/diagnostics: change output frequency, now in seconds (instead
816      of Nb of iterations). This requires to change data.diagnostics.
817    checkpoint57h_pre
818    
819    o in mnc, let the user create the output dir if both mnc_outdir_date
820      and mnc_outdir_num are false
821    o add fflags() to pkg/diagnostics which allows one to specify, on a
822      per-file basis, the file precision [default behavior is unchanged]
823    o added diagnostics to pkg/kpp, including computation of mixed layer
824      depth based on a temperature/density criterion
825    o updated verification/natl_box to test the new pkg/kpp diagnostics
826    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
827    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
828    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
829      not mnc -- this mistake was found by JMC and is now corrected
830    
831    checkpoint57g_post
832    o add Adams-Bashforth 3rd Order time stepping:
833      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
834      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
835    checkpoint57g_pre
836    
837    o make lambda[Theta,Salt]ClimRelax spatially varying
838      (default remains spatially uniform constant based on tau)
839    o added new control variables
840      * init. uVel, vVel, etanN
841      * lambda[Theta,Salt]ClimRelax
842    o separate masks used for ctrl_pack/unpack 'from write_grid' output
843      (suggested by G. Forget)
844    
845    checkpoint57f_post
846    o add parameter "baseTime" = model base time = time at iteration zero
847      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
848      account for baseTime shift
849    o move Coriolis arrays from PARAMS.h to GRID.h
850    checkpoint57f_pre
851    
852    o mnc-ifying the seaice package
853    o introduced an alternative length scale calculation for use in the limiting
854      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
855    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
856    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
857      as well as grad(vort3).  Made it compatible with both approximate form
858      for the cubed sphere and full form of these gradients.  Added flag
859      useFullLeith to select between approximate and full form.  
860    o add "d0" in getcon.F to reduce differences between compilers/platforms
861      update output.txt of exp. fizhi-gridalt-hs
862    o change port_rand funtion to allow to set the seed.
863    o fix obscure MNC bug involving conversion between reals and integers
864      - it caused no problems with certain (eg. gcc, ifc) compilers but the
865        new version is now more standards-compliant
866    o adjoint-related modifications
867      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
868      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
869      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
870    
871    checkpoint57e_post
872    o Adding eddy stress controls a la Ferreira et al.
873    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
874    
875    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
876      update output.txt of exp. fizhi-gridalt-hs
877    o add more "Z" dimensions and associated coordinate vars to MNC
878    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
879    o parameter calendarDumps: when set, approximate months (30-31 days) and years
880      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
881      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
882      months and years.  Requires pkg/cal.
883    o diagnostics: add pickup functionality
884      - off by default for backwards compatibility
885      - current version only uses MDSIO -- MNC will be added
886    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
887    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
888    
889    checkpoint57d_post
890    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
891    o modify verification/ideal_2D_oce so that it tests the creation of mnc
892      output from the diagnostics package
893    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
894    o make genmake2 more portable by using ".$FS" instead of ".f" for more
895      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
896    o add coordinate variables to the MNC output from the diagnostics package
897    o change MNC-flags default value: true when useMNC=TRUE
898    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
899      the ability (off by default) to read the grid information using MNC
900    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
901    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
902    o do snap-shot diagnostics at the middle of the time-interval (instead of
903      at the end).
904    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
905      new test for AIM with thSIce + slab-ocean
906    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
907    o move state variable diagnostics to the beginning of the time step ;
908      (note: still needs some work specially for snap-shot diagnostics)
909      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
910    
911    checkpoint57c_post
912    o Change testing option (-ieee) to get closer agreement between g77 & ifort
913    o generate new output.txt files on faulks with g77 & the new -ieee option
914    checkpoint57c_pre
915    
916    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
917      update output.txt of exp. global_ocean.90x40x15
918    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
919      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
920    o add saltFlux(+File) forcing capability with periodicExternalForcing
921    o allow to use pkg diagnostics for GM-Redi & ThSIce output
922    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
923    o improvements for the MNC output from DIAGNOSTICS:
924      - correct handling of the unlimitied dimension
925      - all dims now have associated coordinate variables
926      - variables located at U, V, and Corner ("Z") points are now written
927        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
928        *all* data points are output
929    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
930    o added pkg/seaice/seaice_monitor.F
931    o mdsio_readfield.F can now read files visible only to master MPI process.
932    o pkg/seaice: some test code for ice-modified ocean stress
933    o exf_getffields interpolation defaults to bilinear for all scalar forcing
934      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
935      spurious negative numbers for precipitation and humidity.  Will cause
936      some small numerical differences for integrations using pkg/exf/exf_interp.F.
937    o pkg/ctrl/
938      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
939        May be enabled via doPackDiag
940      *  introduce z-scaling of
941         + gradient (doZscalePack) and
942         + control (doZscaleUnpack)
943    o pkg/mdsio/
944      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
945      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
946    
947    checkpoint57b_post
948    o simplify options in diagnostics_fill arguments (remove weird combinations)
949    o fix MNC coordinate variables so that they now contain per-face index
950      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
951      general, EXCH2 grids are only aligned to a "local" coordinate system
952    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
953    o Implement instantaneous output within pkg diagnostics:
954      setting a negative frequency in data.diagnostics produces
955     "snap-shot" output (as opposed to time-average if freq > 0)
956    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
957      NOTE: change ptracer diagnostics name: use 2 characters to work with
958            more than 9 tracers. Add also diagnostics of advect & diffus flux.
959    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
960      becomes the coordinate variable for the 'T' dimension
961    o add CF-style coordinate variables to MNC
962      - just a first cut:  numbers are meaningless on the cubesphere and
963        missing along the T axis but otherwise it works!
964    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
965    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
966    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
967      this is based directly on what the model compute, so that the content of
968      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
969    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
970    o clean up build options files for SunOS, in particular
971      - remove -traditional from xmakedepend
972      - change -xarch=v9 to -xarch=native for f77
973      - restore use of make (not gmake)
974      - add CC=gcc if using g77
975    o changes per discussion of AM, JMC, & EH3 today:
976      - move redundant "grid" variables out of "state" -- in preparation of
977        creating proper CF-style coordinate variables and in recognition
978        that any/all grid variables can be easily copied (eg. w/NCO) from
979        the grid files into any of the other NetCDF files
980      - *always* output grid variables with MDSIO (this will eventually be
981        changed)
982      - output MNC grid file if useMNC is true
983    o every instance of _END_MASTER() has been found and replaced with
984      _END_MASTER( myThid ) in order to satisfy certain picky Sun
985      preprocessors
986    o re-arrange diagnostics pkg initialisation:
987     - allow each package to extend the available diagnostics list
988     - add some checking and fix small problems (multi-threaded, ...)
989     - new S/R diagnostics_fill (replace fill_diagnostics):
990       look through the short list of active diag. (instead of the long list)
991       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
992    
993    checkpoint57a_post
994    o this set of changes restores TAMC compatibility
995      tested for global_ocean.90x40x15 adjoint on trough
996      (what a pain)
997    
998    checkpoint57a_pre
999    o some modifs in tools/build_options for sunos
1000    o call ctrl_pack for ctrl at end for optimcycle=0
1001    
1002    checkpoint57
1003    o add horizontal bi-harmonic viscosity for vertical velocity
1004      - new parameter viscA4W (defaults to viscA4)
1005      - affects only non-hydrostatic code
1006      - to be done: no-slip lateral boundary conditions
1007    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1008    o implement Implicit Vertical advection for pTracers
1009    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1010      (implemented also for implicit vertical diffusion & advection)
1011    o OBCS: extend application of tracer open boundary conditions
1012      to a strip beyond the boundary of width Olx/Oly
1013    o add call monitor to TAF set of required calls (flow directives)
1014      and include in natl_box_adjoint
1015    o untangle a few ifdefs related to cost, ctrl, autodiff
1016      untangel a few ALLOW_ECCO_OPTIMIZATION
1017    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1018      (theta2, salt2 in ecco_cost_weights)
1019    
1020    checkpoint56c_post
1021    o OBCS as control variables
1022      - update ctrl_ad_diff.list, obcs_ad_diff.list
1023      - remove balance of obcs controls from default
1024      - fix index bug nobcs in ctrl_init
1025      - fix dummy fields filen in ctrl_pack
1026      - add dummy weights for obcs
1027    o lsopt: comment out fort.94 output
1028    o optim:
1029      - remove unnecessary header files
1030      - adjusted namelists
1031      - add xerbla.F to Makefile
1032    o exf:
1033      - multiple modifications of exf_check_range
1034      - unit change in exf_init_runoff from [m/year] to [m/s]
1035    o mdsio:
1036      - i/o-vector change debugLevel from debLevA to debLevB
1037    
1038    checkpoint56b_post
1039    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1040      is called from DO_THE_MODEL_IO
1041      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1042      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1043      - clean up PTRACERS_WRITE_TIMEAVE a little
1044    o add another verification experiment that tests both the cfc-pkg and
1045      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1046      reactive tendencies treated inline with regular timestepping
1047    o testreport previously did a lousy job of comparing small numbers, so
1048      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1049      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1050      testreport.
1051    o ptracers_monitor: bug fix for MPI
1052    
1053    checkpoint56a_post
1054    o GCHEM: finish reorganizating the package
1055      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1056        (introduces another 3D-array for each passive tracer, but only if
1057        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1058        gchemTendency is not needed because the timestep is done separately)
1059      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1060      - GCHEM is now---more or less cleanly---separate from PTRACERS
1061      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1062        so clear to me how that should be done in a general way.
1063    o CFC: improve formatting of output in CFC_ATMOS
1064    o PTRACERS:
1065      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1066        that ALL experiments with ptracers enable can be checked. This makes
1067        GCHEM_MONITOR obsolete.
1068      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1069        monitorFreq
1070      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1071    o add PTRACERS (PTR0[1-5]) to testreport output
1072    o exf_check_range:
1073      * default changed to .TRUE.
1074      * will check values for niter0 if debLevA, every timestep if debLevB
1075      * STOP in exf_check_range if 'out of range'
1076      * range chosen generous to allow for potential extema
1077      TBD: a version with stricter range
1078           permitted range would be runtime parameters
1079    o GMredi:
1080      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1081      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1082      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1083    o GCHEM:
1084      - move call to GCHEM_FORCING_SEP, so that it is now called before
1085        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1086      - introduced a useGCHEM runtime flag and applied it everywhere.
1087      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1088        this flag is now only visible within GCHEM-pkg routines.
1089      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1090        be replaced by a 3D array that is computed before thermodynamics; for
1091        this, the tracer ID iTracer had to be included into the parameter list
1092        of ptracers_forcing
1093      - set up forward_step to call gchem_forcing, that will replace
1094        gchem_forcing_int in ptracers_forcing
1095      - cleaning up
1096    o small cleaning of exch2: remove files that are also in eesupp/src
1097    
1098    checkpoint56
1099    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1100    o mnc: cleanup "full" files--fixes out-of-memory problem
1101    o ECCO-GODAE
1102      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1103      * fully merged and updated from SIO code
1104        windstress sign change affects
1105        - exf_inscal_[u/v]stress
1106        - sign of xx_tau[u/v] adjustments
1107        - signs in cost_scat
1108      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1109      * natl_box_adjoint updated and compressed
1110      * 2-level checkpoint switch added
1111        (tested in EXP. 1 of natl_box_adjoint)
1112      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1113    o SVD
1114      * first complete, non-hacked version for SVD calculations
1115      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1116        performed via direct access files admtlm_vector.it????
1117        (via ctrl_[un]pack)
1118      * optimcycle is used for ARPACK iteration counter
1119        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1120      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1121        and add linear transforms where necessary
1122      * controls are initial/final SST, SSS (can be extended; need to check
1123        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1124    o mdsio: filename info to both stderr, stdout
1125    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1126      from sign change
1127    
1128    checkpoint55j_post
1129    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1130      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1131    o add consistent build directories and .cvsignore files to verification
1132    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1133    o make all subroutines 30 or less characters in length for certain older
1134      compilers to work (a thorough search only turns up two routines in
1135      pkg/ptracers)
1136    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1137      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1138    
1139    checkpoint55i_post
1140    o change arrays for total vertical diffusivity (2.D if explicit,
1141      3.D if implicit) ; each ptracer uses its own background value.
1142    o added mnc/NetCDF output capability to ocn_compon_interf
1143      - added bits to verification/cpl_aim+ocn so that it can run on
1144        ITRDA and other clusters without the mpirun "-wd" option
1145    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1146      configuration
1147    o give MNC the ability to create additional files rather than
1148      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1149      - the default is just less than 2GB which is a practical limit
1150        on many systems
1151    o Compute the non-local term using either KPP vertical diffusivity (=default)
1152       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1153    
1154    checkpoint55h_post
1155    o add verification test "vermix"
1156    o remove all the *_ioinc flags and replace with the single global
1157      outputTypesInclusive flag
1158    o allow to set a vertical profile of vertical diffusivity for T & S
1159    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1160    o useMNC moved from data.mnc to data.pkg
1161    
1162    checkpoint55g_post
1163    o Renaming carbon AD experiments to comply with testreport conventions
1164    o Updating adjoint of Held-Suarez hs94.1x64x5
1165    o Fixing directives for non-ECCO forward_step, after ECCO directives
1166      have been fixed to avoid recomp. of do_oceanic_phys
1167      Works well for global_ocean.90x40x15,
1168      but recomp. issue remains for carbon
1169    o Updating adjoint output for natl_box_adjoint after
1170      pkg/ecco has been modified (see taga c55d_post)
1171    
1172    checkpoint55f_post
1173    o rename to timeave_init_fixed
1174    
1175    checkpoint55e_post
1176    o some delicate re-shuffle of store directives to avoid one
1177      extra call of do_oceanic_physics
1178      affects ecco_the_main_loop.F, do_oceanic_physics.F
1179      checkpoint_lev1_directives.h
1180    o NB: this may break global_ocean adjoint temporarily,
1181      but it is clear how to fix it. Will do later, need this now.
1182    
1183    checkpoint55d_post
1184    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1185    o ecco_cost_weights is modified to 1x1 runs
1186    o modifs to allow observations to be read in as
1187      single file or yearly files
1188    o enable to read exf forcing fields as either
1189      single file or yearly files (flag useExfYearlyFields)
1190    checkpoint55d_pre
1191    
1192    o switch between 2-level and 3-level checkpointing
1193    o add ability of MNC to write local and "partial" (eg. 2D slices where
1194      the full 3D field is never actually stored) arrays to NetCDF files
1195      with the correct (that is, the complete multi-dimensional) set of
1196      array indicies
1197      - used in mom_vecinv() to write the diagFreq output
1198      - tested (demonstrated) in verification/aim.5l_cs
1199    o further mnc-ification
1200      - add verification/lab_sea to the list with mnc setups
1201      - fix undefined mnc v-names in cd_code
1202      - add kpp to mnc output (both snapshot and timeave)
1203    o non-hydrostatic code
1204      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1205        in calc_gw.F
1206      - defaults to viscAh
1207      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1208        friction or Leith) in non-hydrostatic mode, as long as there is
1209        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1210    o pkg/cost
1211      extend simple cost functions to treat time mean quantities
1212      (T,U,V) via cost_accumulate_state from cost_tile
1213    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1214        be 2 times larger than the minimum size the advection scheme requires.
1215        now get a perfect conservation of salt in advect_cs test-exp (updated)
1216    o GGL90 (Gaspar's TKE mixed layer)
1217      - add horizontal diffusion of TKE, requires exchanges in
1218        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1219        default. In OPA there is no horizontal diffusion of TKE but the
1220        mixing coefficients are computed from a horizontal average of TKE of
1221        6 points or so. I think that diffusion has a little more physical
1222        justification.
1223      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1224        was in vain)
1225      - mask tke-variable in ggl90_init
1226    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1227    o fix biharmonic diffusion on CS-grid.
1228    o more obcs stuff
1229      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1230        for reading boundary values. This routine is called from
1231        obcs_prescribe_read
1232      - updated obcs_check
1233      - changed sponge layer relaxation parameter units for days to seconds
1234      - turned off sponge layer by default
1235      - changed argument list of OBCS_CALC to myTime+deltaTclock
1236      - fixed about 35 bugs in obcs_external_fields_load
1237    
1238    checkpoint55c_post
1239    o obcs stuff
1240      - new runtime flags useOBCSprescribe, useOBCSbalance
1241      - re-arranged obcs_calc
1242      - moved exf_getobcs to obcs_prescibe_read
1243        obcs_prescibe_read is called after ORLANSKI stuff
1244        and independent of it (executable can contain all).
1245      - updated obcs_check
1246      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1247        These may be necessary only if tangential velocities are
1248        prescribed at OB, not sure, needs testing.
1249    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1250      which simplifies the calls and passes the ifc check-bounds test
1251    
1252    checkpoint55b_post
1253    o add a 2D scalar, Z location, exchange_2 routine.
1254    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1255      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1256      affects advect_cs results (for the wrong reason): update output.txt
1257    o use a more standard discretization for biharmonic viscosity ;
1258     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1259      affects results of dome set-up: update output.txt
1260    o fix gad_advection.F (CubedSphere part), back to version 1.23
1261    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1262    
1263    checkpoint55a_post
1264    o merged code to
1265      * prescribe/read time-dependent open boundaries
1266        (works in conjunction with exf, cal)
1267      * sponge layer code for open boundaries
1268      * each boundary N/S/E/W now has its own CPP option
1269        (healthy for the adjoint)
1270    
1271    checkpoint55
1272    o up-to-date adjoint of previous breaks
1273      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1274      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1275      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1276      - carbon: * remove tr1-related adjoint verification
1277                * add ptracer as control variable
1278    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1279      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1280    
1281    checkpoint54f_post
1282    o in verification/carbin/ remove experiment related to
1283      ALLOW_PASSIVE_TRACER (array tr1 etc)
1284      code_ad/ input_ad/ results_ad
1285    
1286    o add two new packages
1287      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1288        + subject to optimization (memory)
1289      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1290        + subject to reordering (many GOTOs in the original code)
1291        + so far opps is called for every (i,j) point, and then operates in
1292          the vertical; one may want to reorder the scheme in order operate in
1293          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1294          fields)
1295    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1296      - all verification tests compile and run with linux_ia32_g77
1297      - defaults are compatible with current input files--nothing
1298        should change if you were not previously using MNC
1299      - MNC output has been added in numerous places (eg. timeave)
1300        but there are still a few writes not yet do-able with MNC
1301        (this is in progress)
1302      - flags now allow for either/or/both use of MDSIO and MNC and
1303        documentation will soon follow
1304      - numerous small formatting cleanups for ProTeX
1305    o add version info (via BUILD_INFO.h) to MNC and stdout
1306    
1307    checkpoint54e_post
1308    o add two new packages
1309      - pp81 (Packanowski and Philander, 1981), Richardson number and
1310        stratification dependent mixing
1311      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1312      - these scheme operate in a similar manner as KPP (without ghat, of
1313        course), however there is only one diffusivity that is used for both
1314        temperature and salinity (and passive tracers)ç
1315    o add offline package
1316    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1317      provided by Stephanie Dutkiewicz
1318    o genmake2: add ability to search for C compilers and cleanup test output
1319      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1320    
1321    checkpoint54d_post
1322    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1323    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1324      leading to additional shift by 5 days each year of integration
1325       (i.e. leading to considerable offset over the years)
1326    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1327    o start with no AB and no initial filtering (staggerTimeStep):
1328      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1329    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1330      (external loading & cpl import/export stay in forward_step.F)
1331    o update coupling interface to work with new staggerTimeStep
1332    o change MDSIO ptracers_pickup.
1333    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1334    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1335    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1336    
1337    checkpoint54c_post
1338    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1339      this affects (truncation error) output.txt of test-exp:
1340       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1341    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1342    o change Qnet to always be the net heat flux, (+upward).
1343      affects (truncation error) output of natl_box exp.: updated
1344    o define the max number of passive tracers in PTRACERS_SIZE.h
1345    o start to test mnc routinely in exp0
1346    o add sea-ice loading (sIceLoad) as a new forcing field.
1347    
1348    checkpoint54b_post
1349    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1350       impressive on Altix and Opteron systems)
1351    o diagnostics can now write NetCDF files through the mnc package
1352    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1353    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1354    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1355      affects (truncation error) output of lab_sea & natl_box exp.: updated
1356    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1357    
1358    checkpoint54a_post
1359    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1360    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1361    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1362    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1363      + internal_wave (shift in writing cg2d_ini_res)
1364    checkpoint54a_pre
1365    
1366    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1367      - modified verification/lab_sea and natl_box_adjoint accordingly
1368    
1369    checkpoint54
1370    checkpoint53g_post
1371    o prepare splitting of thermodynamics: store convect.counter in common block
1372    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1373      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1374    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1375    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1376    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1377    o restore adjointability
1378    
1379    checkpoint53f_post
1380    o modifications that affect AIM experiment results (update output.txt):
1381      - no advection of S at top interface Nr (pkg/generic_advdiff)
1382      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1383    o AIM pkg:
1384      - include stability function into surf.Flux derivative relative to Tsurf
1385      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1386    
1387    checkpoint53e_post
1388    o merged cylindrical coord configuration
1389    o added rotating_tank experiment
1390    checkpoint53e_pre
1391    
1392    checkpoint53d_post
1393    o faulks upgraded: re-generate output.txt that have changed:
1394       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1395    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1396    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1397    o added Sadourny discretization of Coriolis
1398      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1399      - re-enabled use of omega3 (useAbsVorticity)
1400    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1401      vector-invariant equations
1402      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1403    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1404      hopefully without new bugs
1405      - still to do: biharmonic friction for non-hydrostatic w
1406    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1407    o regenerated output for global_ocean_ebm (using -ieee)
1408    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1409      of mom_common/
1410      - simple re-arrangement of instructions within computing loop
1411    checkpoint53d_pre
1412    
1413    checkpoint53c_post
1414    o new version of coupler for AIM+thSIce and Ocean models
1415     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1416     - land: change Evaporation of snow
1417     - aim with thSIce: fix bug in snow-precip.
1418    o changes to calc_gw.F
1419     - bug fix for w^2 term near the bottom boundary
1420     - (hopefully) improve the lateral slip boundary condtions for use with
1421        partial/looped cells
1422      - because the bug fix changes two verification experiments anyway (exp5
1423        and plume on slope), change the lateral boundary condition from half slip
1424        to the value of no_slip_sides
1425    o ebm package wasnt quite up to the parallel task. Fixed that.
1426    o Adjoint of EBM package + verification
1427      * TLM OK
1428      * ADM not sufficient accuracy yet (needs further testing)
1429    
1430    checkpoint53b_post
1431    o Commiting new energy balance model to repository
1432      * package is pkg/ebm
1433      * verif. is verification/global_ocean_ebm
1434      * references are in ebm_driver.F
1435    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1436    C        Global thermohaline circulation. Part I:
1437    C        Sensitivity to atmospheric moisture transport.
1438    C        J. Climate 12(1), 71-82
1439    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1440    C        Global thermohaline circulation. Part II:
1441    C        Sensitivity with interactive transport.
1442    C        J. Climate 12(1), 83-91
1443    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1444    C        Destabilization of the thermohaline circulation
1445    C        by atmospheric eddy transports.
1446    C        J. Climate 7(12), 1870-1882
1447    o Will need long integration testing.
1448    checkpoint53b_pre
1449    
1450    o created pkg/mom_common in preparation for variable viscosity code
1451    o renamed and split ini_mnc_io
1452    o pkg/land: only liquid water can diffuse or run-off
1453    o AIM using land: soil wetness availability account for snow
1454    o added printMapIncludesZeros to EEPARMS namelist
1455    
1456    checkpoint53a_post
1457    o restore TAMC compatiility for exf_constants.h
1458      (no usage of _d in .h)
1459    o Additional storing in KPP in an attempt to fix
1460      TAMC problem with adjoint of KPP code.
1461      (no success...)
1462      Identical code works fine with TAF.
1463    o Fixed verification/natl_box_adjoint experiments.
1464      Initial conditions for Experiments 4 and 5 are now
1465      set to "SEAICE_initialHEFF=0", which is more reasonable,
1466      and hence gives results closer to that of Experiment 2.
1467      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1468    
1469    checkpoint53
1470    o stable checkpoint with up to date adjoint
1471      TLM tests only run for 1st grdchk at the moment. Its unclear if
1472      this is a code problem or a problem with resetting code for g_
1473      variables that is being autogenerated wrong.
1474      Otherwise:
1475       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1476       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1477         are both still in chaos following their security messes.
1478    
1479    checkpoint52n_post
1480    o various build (mostly genmake2) changes including:
1481      - ability to build/run more easily within Cygwin and MacOS X
1482      - more complicated Makefiles with a stronger dependence on Gnu Make
1483    o pkg/seaice modifications
1484      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1485        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1486        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1487      - changed proxy for geostrophic velocity and updated
1488        verification/lab_sea/results/* accordingly
1489      - removed ADI dynamic solver from pkg/seaice
1490      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1491        they caused a segmentation fault under certain circumstances
1492      - removed unused field WATR
1493    o bug fix in exf-package:
1494      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1495         now reflect that.
1496    o small fixes in the cal-package:
1497      - set reference date to first of January for the 'model'-calendar
1498      - failing of cal_CheckDate in cal_FullDate now actually results in a
1499        warning
1500    o small modifications in exf-package to increase flexibility:
1501      - change climtempfreeze from a constant to a runtime parameter that
1502        is specified in data.exf_clim (default = -1.9)
1503      - introduce runtime parameter windstressmax (default = 2.0) that is
1504        specified in data.exf
1505    o fix in pkg/thsice:
1506      - update Evap (Tsf changes) to be consistent with Latent heat flux
1507      - maintain snow precipitation unchanged (even if Tsf >=0).
1508     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1509    
1510    checkpoint52m_post
1511    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1512      this does not change any of the results, because myIter=0 in swfrac always
1513      lead to jwtype=2 (the default anyway), but the call makes little sense
1514      as a default
1515    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1516    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1517      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1518    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1519    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1520    o extending useSingleCpuIO option to work with new exch2 I/O format
1521      - old-style, missing-tile I/O is still accessible by defining CPP
1522        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1523    o monitor package can write to NetCDF files and/or STDOUT
1524    o fix re-definition bug in MNC_GRID_INIT_ALL()
1525    o doc/api_reference added
1526      - a framework for building an API Reference Manual using all
1527        the "protex" comments embedded in the code
1528      - see pkg/generic_advdiff, pkg/mnc for examples
1529    o MNC:
1530      - make myThid the last argument for all subroutines
1531      - new default for the grid files: NO halos
1532      - add useMNC and other run-time flags
1533      - separate per-file-group handling of the unlimited dimension
1534      - early initialization of MNC w/ flags read at the eeboot stage
1535        and lookup tables set in initialize_fixed
1536      - write all MNC output to a freshly-created directory
1537    o thermodynamics sea-ice (thsice) is now tested with testreport.
1538    o test exp. advect_cs: use the standard cs32 grid ; update output.
1539    o Added functionality to grdchk:
1540      pick global i,j,k position (or nearest wet) where to perform check.
1541    
1542    checkpoint52l_post
1543    o new land formulation:
1544      a) use ground enthalpy as prognostic variable to ensure exact
1545         energy conservation.
1546      b) account for water temperature and for latent heat of freezing
1547         in all processes (rain, run-off, ground storage)
1548      c) compute surface and ground temperature implicitly.
1549    o aim_v23 modification for new land model:
1550      a) Treat separately land / ocean / sea-ice surface fluxes
1551         to allow implicit computation of land & sea-ice surface temp.
1552      b) add snow precipitation.
1553    checkpoint52l_pre
1554    
1555    o fix problem (when 1 tile is empty) in min/max monitor.
1556    o fix bug in timeAve (u,vZetatave in common block)
1557    o no restoring terms under ice for pkg/seaice
1558    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1559    o bug fix for pkg/seaice pickups
1560    o change MNC call locations and add coordinate attributes
1561    o mask vorticity at the corner ; affects global_ocean.cs output
1562    o fix ini_curvilinear_grid ; test CS experiments with mpi
1563    o aim.5l_cs: modify sea-ice fraction input file ; update output
1564    o exf: Adding simple range check routine for exf fields after read
1565    
1566    checkpoint52k_post
1567    o removed top-level directory "diags"
1568      - we migrated these functions to pkg/timeave a long time ago
1569    o fixed bug introduced in pkg/monitor
1570    o accuracy ctrlprec = 32 insuffient for gradient checks using
1571      averaged fields (I/O via cost_averages)
1572      -> use ctrl.h in active_file*.F to control I/O precision.
1573    o paramter list of CALL ADTHE_MAIN_LOOP
1574    o added initial do_the_model_io to ecco
1575    o set all ...Freq to zero after cost_final
1576      taveFreq, dumpFreq, pChkptFreq
1577    o MAIN and ECCO differentiability restored
1578    
1579    checkpoint52j_post
1580    o fix nchklev in tamc.h for global_ocean...
1581    o Bringing flow and store directives up-to-date
1582    o Really weird thing!
1583      call do_the_model_io from the_main_loop with parameters
1584      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1585      TAF places a faulty re-call of initialise_varia
1586      after cost_final call which should not be there!
1587    checkpoint52j_pre
1588    
1589    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1590      error messages
1591    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1592    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1593      debug output
1594    o modfied mdsio_writefield.F to handle non-global files under exch2
1595    o update AIM Cubed-Sphere exp (aim.5l_cs):
1596      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1597    o update AIM Equatorial Channel exp:
1598      use standard aim_v23 pkg and change the SST fields to be more realistic.
1599    o globalFile now works with exch2
1600    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1601      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1602    o limit timeave output for hi-res integrations
1603    
1604    checkpoint52i_post
1605    o removed CPP_EEOPTIONS.h from verification/*/code
1606    o updated the tiling for global_ocean_pressure
1607    checkpoint52i_pre
1608    
1609    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1610      the old pkg/aim).
1611    
1612    checkpoint52h_pre
1613    o shortened offending lines in exch2_send_rx?.template
1614    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1615    o genmake2: add build & execute test for NetCDF code
1616    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1617      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1618    o added useSingleCPUIO flag to monitor.F and mon_out.F
1619    o added temporary hack for sea-ice dynamics on the cube:
1620      metric terms are ignored and it is assumed that
1621      there is no sea-ice on cube faces 1, 2, 4, and 5.
1622    
1623    checkpoint52f_post
1624    o added exch2 cube routines to pkg/exch2
1625    o modified hs94.cs-32x32x5 to use it
1626    o added new grid files to hs94.cs-32x32x5
1627    checkpoint52f_pre
1628    
1629    checkpoint52e_post
1630    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1631      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1632    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1633      to work with implicit vertical advection and AB ;
1634    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1635    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1636     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1637    checkpoint52e_pre
1638    
1639    o fix bug in impldiff when Nr=1 or Nr=2.
1640    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1641    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1642    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1643      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1644    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1645    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1646    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1647    
1648    checkpoint52d_post
1649    o re-tiled many expts to allow comparison in multi-processor mode
1650      - updated output accordingly
1651      - changed hs94.128x64x5 to use intial T from file rather than use the
1652        random number generator
1653    o add infrastructure in model routines for fizhi and gridalt packages
1654    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1655    o changes to permit hi-res, cubed-sphere, configuration
1656      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1657      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1658      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1659        of surface winds for the cube
1660      (A verification experiment, based on global_ocean.cs32x15, but with
1661       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1662       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1663       complete with example surface forcing files and matlab scripts to look
1664       at the output and compare it with that of global_ocean.cs32x15.)
1665    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1666       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1667       to conform to the common rule.
1668    o check-in the first version of the coupler + interfaces for multi-components
1669       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1670       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1671       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1672       - ocean and atmos. share the same horizontal grid (no interpolation).
1673       - exchanges between component and coupler is done in forward_step
1674    o new verification experiment, cpl_aim+ocn:
1675       coupled ocean - AIM atmosphere on cs32 grid.
1676    
1677    checkpoint52d_pre
1678    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1679    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1680    
1681    checkpoint52c_post
1682    o Fixing OPTIONS files for use of exf:
1683      - ALLOW_ECCO not needed
1684      - ECCO_CPPOPTIONS.h should not be included from
1685        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1686        as has been the case in the past
1687      - All cal/exf related options are currently set in
1688        single header file. Should remain so until we
1689        agree on a consistent new policy.
1690    o Removed all CPP options for cal package.
1691      cal has no more CPP options.
1692    o modified STOREs in GAD_ADVECTION
1693    o corrected key comp. for passkey
1694    
1695    checkpoint52b_post
1696    o new version: "thsice" of thermodynamic sea-ice pkg:
1697     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1698     - modify fluxes but do not change theta directly;
1699     - light cleaning of bulk_force pkg (still needed with thsice).
1700     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1701       + output_thsice.txt to test thsice & bulk_force pkgs.
1702    o put back grid & coriolis monitor output.
1703    checkpoint52b_pre
1704    
1705    o call "do_the_model_io" at the beginning (=> dump initial state)
1706    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1707    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1708      (need info on NUMBER_OF_PTRACERS)
1709    o missing PTRACERS headers in some routines
1710    o default tamc.h in pkg/autodiff supposed to crash
1711      to ensure proper customization
1712    
1713    checkpoint52a_post
1714    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1715      - moved surfaceTendencyTice from pkg/seaice to main code
1716      - subroutine FREEZE_SURFACE now limits only surface temperature
1717        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1718        => new output.txt for global_ocean.cs32x15 & global_with_exf
1719      - keep the old version of FREEZE for backward compatibility;
1720        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1721      - corresponding modifs for TAF directives
1722    o added surface flux output variables to TIMEAVE_STATVARS
1723    o time-averaged output for pkg/ptracers
1724    o fix problem with ECCO-related divided adjoint
1725      snapshot file was missing some ad-variables,
1726      but no warning issued by TAF
1727    
1728    checkpoint52a_pre
1729    o some bug fixes for #undef REAL4_IS_SLOW
1730    
1731    checkpoint52 = ecco_c52_e35
1732    o after testing adjoints of checkpoint51u_post
1733    
1734    checkpoint51u_post
1735    o this is the post-merge tag of the ecco-branch
1736      (needs another clean checkout and re-testing)
1737    o various natl_box_adjoint configs and results
1738      but no input fields
1739    o obcs adjoint not yet merged!
1740    o adding ECCO global 1x1 and 2x2 degree configs
1741    o updated/extended some store directives for seaice
1742    o pkg/ecco now containes ecco-specific part of cost function
1743    o top level routines the_main_loop, forward_step
1744      supersede those in model/src/
1745      previous input data.cost now in data.ecco
1746      (new namelist ecco_cost_nml)
1747    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1748    
1749    checkpoint51t_post
1750    o this is the pre-merge tag of the ecco-branch
1751    
1752    checkpoint51s_post
1753    o cleanup: removed various obsolete #define-s
1754    o pkg/grdchk
1755      - renamed 'ph-grd 3' to 'grad-res'
1756      - merged from ecco-branch
1757        (remaining bug fixes for obcs gradient checks)
1758      - additional high-precision output for testreport
1759        (grep for 'precision_grdchk_result')
1760    
1761    checkpoint51r_post
1762    o cleaned up or removed CPP_OPTIONS.h files
1763    o updated results for some of the tests to reflect the new
1764      optfiles (-ieee: -O0 instead of -O3)
1765    
1766    checkpoint51q_post
1767    o cd_code:
1768      - moved cd_scheme.F -> cd_code_scheme.F
1769      - separate read_checkpoint from cd_code_ini_vars.F
1770      - separated cd_code part from write_checkpoint
1771      - updated AD_SOURCE, generated .flow
1772      - added CD_CODE_VARS.h to the_main_loop
1773      - Moving cd_code specific store dir.s to pkg/cd_code
1774    o ctrl package totally restructured
1775      - pack/unpack now optional and decoupled from
1776        xx_/adxx_ I/O
1777      - ctrl_pack/unpack cleaned
1778        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1779      - confined inclusion of AD_CONFIG.h to where necessary.
1780    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1781    
1782    checkpoint51p_post
1783  o create initial cd_code package  o create initial cd_code package
1784      - WARNING: the initialization of fields within packages
1785        is broken because INI_FIELDS (where READ_CHECKPOINT is
1786        called) is called *before* PACKAGES_INIT_VARIABLES.
1787        This seems to be backwards since
1788        1) its important to initially zero the entire field including
1789           the "halo" region
1790        2) zeroing needs to be done *before* reading pickup info
1791           and the pickup call might or might not happen in any
1792           particular run
1793      - this needs an overhaul for R2
1794  o cleanup verification/*/code/GMREDI_OPTIONS.h  o cleanup verification/*/code/GMREDI_OPTIONS.h
1795  o cleanup testreport  o cleanup testreport
1796    

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