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revision 1.122 by jmc, Thu Jan 23 15:35:48 2003 UTC revision 1.761 by jmc, Sat Dec 30 00:18:09 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 pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
8    o pkg/mdsio:
9     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
10       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
11       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
12     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
13     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
14       either MDS_READ_FIELD or MDS_WRITE_FIELD )
15     - new S/R (to replace MDSWRITEMETA), which allows to write more
16       informations (variable names, time ...) to meta files.
17     - modify rdmds.m to give back the meta file content.
18    o pkg/diagnostics: change vertical interpolation to be safer, and more
19       flexible (define p-levels to interpolate to in data.diagnostics);
20      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
21       diagnostic pointer.
22    o pkg/seaice: more cleaning up of seaice_growth, added many comments
23    o pkg/exf: put runoff0 and runoff into the appropriate common block
24    o fix multi-category seaice:
25     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
26       SEAICE_MULTICATEGORY
27     - fix short wave heat flux
28    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
29       and allow to use EVP solver. Change forward lab_sea: test both EVP
30       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
31    o Initial check-in of lab_sea adjoint
32      (very similar to natl_box_adjoint/code_seaice)
33      * used C-grid and EVP solver
34      * used KPP, GM/Redi
35      * uses inAdExact=.TRUE.
36      * gradient checks fail for both ADM and TLM
37        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
38        f.d. gradients actually seem more problematic than ADM, TLM gradients;
39        issue is related to forward mismatch between g77 an ifort
40    o pkg/seaice: overhaul of thermodynamics
41     - growth.F and groatb.F are replaced by new routine seaice_growth.F
42     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
43     - move a few global fields out of SEAICE.h into seaice_growth.F and
44       make them 2D (FICE/QNETO/ ...)
45     - remove FO (it is the same as QNETO)
46     - introduce a few local fields to avoid modifying external fields such
47       as atemp, etc.
48    
49    checkpoint58s_post
50    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
51      changed exf_set_gen.F so that
52        genperiod=0 means input file is one time-constant field and
53        genperiod=-12 means input file contains 12 monthly means
54    o CG2D: use pre-computed solver main-diagonal (stored in common block);
55      this affects truncation error ; generate new output file for exp. which
56      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
57        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
58        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
59        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
60        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
61        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
62    o start implementation of deep-atmosphere and anelastic formulation
63    o verification: remove 2nd copy of input files and use script "prepare_run"
64      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
65    o mom_common/vecinv/fluxform: fix a few initialisation isssues
66    o profiles: fix for multithreaded case
67    
68    o diagnostics: rename few diags:
69      s/'PRESSURE'/'RCENTER '/g
70      s/'TICE    '/'oceFreez'/g
71      s/'TAUX    '/'oceTAUX '/g
72      s/'TAUY    '/'oceTAUY '/g
73      s/'SWFLUX  '/'oceQsw  '/g
74      s/DIFx/DFxE/g
75      s/DIFy/DFyE/g
76      and add few ocean-forcing diagnostics:
77      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
78    o modifications to pkg/seaice/growth.F and budget.F, which change results of
79      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
80      as actual snow thickness.  It now refers everywhere to effective snow
81      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
82    
83    checkpoint58r_post
84    o modifications to pkg/seaice/growth.F, which change results of
85      lab_sea experiment: fixes pertain to melting snow over open water, to
86      masking EVAP under sea ice, and to using the correct AREA variable for
87      computations of EVAP, PRECIP, HSNOW, and GHEFF
88    o add ability to read bathy, salt, and theta using MNC (off by def)
89    o add flooding algorithm and advection of HSNOW for pkg/seaice;
90      both are turned off by default and do no change any results
91    o seaice advection with pkg/thsice: a step toward the use of non-linear
92      advection scheme, but #ifdef or commented out for now (requires more EXCH).
93    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
94      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
95      in natl_box (affects results @ truncation level: update output.txt)
96    o multi-threading and IO:
97      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
98      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
99        (needed to work with SingleCpuIO): tested in all verif. exp.
100    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
101      affects the results (but none of the verification test uses this scheme).
102    o Adding some pkg/diagnostics capability to pkg/seaice
103      (will certainly be subject to changes)
104    o ctrl: adding new control variables:
105      lwflux, lwdown, evap, snowprecip, apressure, runoff
106    
107    checkpoint58q_post
108    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
109      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
110      high_res_cube configuration by 4% on Columbia.
111    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
112      add (in global_with_exf/code) a version of EXF_INTERP_READ without
113      dynamical allocation (seems to work in multi-threaded).
114    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
115      single CPU io) so that TAF does not have to see EESUPPORT.h
116    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
117    
118    checkpoint58p_post
119    o obcs: stop if obcs is used with useCDscheme = .true.
120    o shelfice:
121     - fix a sign error so that no slip at shelfice interface works
122     - remove stop for combination non-hydrostatic code and shelfice. That does
123       not mean, that the results are correct, but at least they are numerically
124       stable
125    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
126    o added adjoint exch routined for all exch*3d* routines
127      and updated flow directives
128    
129    checkpoint58o_post
130    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
131      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
132    o change controling S/R for writing pickup file (new S/R do_write_pickup)
133      and clean-up reading/writing of pickup files.
134    o fix local version of read/write pickup (NH part) in rotating_tank/code
135    o simplify EXCH interface:
136     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
137     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
138    o added the regrid package
139    o shelfice:
140     - add a simple boundary layer scheme to reduce noise
141     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
142    
143    checkpoint58n_post
144    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
145       local variable (not in common block).
146    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
147      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
148      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
149        to work with SingleCpuIO.
150    o add "_d 0" to real constant of pkg/cfc subroutines ;
151       update exp. cfc_exemple & tutorial_cfc_offline output files.
152    o multi-threading and IO:
153      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
154        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
155      - barrier before and after reading.
156      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
157      - avoid using MDS_WRITELOCAL for LAND pkg output.
158      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
159        common-block variables ; Allows multi-threading with master-thread IO.
160    o change default MAX_NO_THREADS from 32 to 4 ;
161      and stop cleanly when MAX_NO_THREADS is too small.
162    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
163    
164    checkpoint58m_post
165    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
166       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
167    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
168       keep global_ocean.90x40x15 (for AD testing) with former secondary test
169       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
170    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
171        add MITgcm_tutorials (= code + all the tutorials)
172    o ecco, option to compute cost for total ssh (mean+anom)
173    o consistent with addition of ptracer and ssh in pkg/profiles
174    o profiles: adding ptracer and ssh
175    o testreport: change multi-test output-file name
176      (from output.txt.{name} to output.{name}.txt)
177    o profiles: now ok for mutli-tiles case
178    o seaice: add 4 parameters for different advection schemes for area,
179      (effective) seaice thickness, enthalphy, and snow height. Their default
180      is the standard parameter SEAICEadvScheme
181    o calc_gw:
182     - add cosFacU in zonal viscous flux (harmonic.visc.).
183     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
184       of tutorial_plume_on_slope.
185    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
186    o calc_gw: true flux-form, account for horizontal grid spacing.
187      update rotating_tank results, but not plume_on_slope (affected at
188      truncation level, 11 digits).
189    
190    checkpoint58l_post
191    o calc_gw:
192     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
193     - remove side-drag for now (need to fix it); update plume_on_slope results.
194     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
195    o commit code to make SST/SSS weights spatially variable
196      (based on either variable in-situ or variable initial T/S weights)
197    o pkg/ecco:
198      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
199        now based on horizontally varying weights wthetaLev, wsaltLev
200      * cost_averagesflags now returns year indices in addition to day, month
201      * sflux balance is performed on annual basis
202        (sflxumm, sfluxmm2, bal_sfluxmm)
203      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
204        including separate counting and multipliers
205    o pkg/rbcs
206      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
207    
208    checkpoint58k_post
209    o testreport:
210     - always build in dir. "build" (if not there, mkdir build instead of building
211       & running in input)
212     - run in dir run (if it exists), in build otherwise.
213     - call prepare_run (if input/prepare_run exists)
214     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
215    o pkg/exf modifications to interpolation and rotation routines for more
216       reasonable treatment of North Pole singularity: for tracers North Pole
217       value is set to northernmost zonal-mean value, for zonal velocity it is
218       set to zero, and for meridional velocity it is set to northernmost value.
219    o pkg/exf/exf_check_range.F
220     - add tile index to diagnostics and move stop statement to the very
221       end of the routine.
222    o pkg/diagnostics: (diagnostics_main_init.F)
223      define title of isomorphic variables according to the current config.
224    o pkg/thsice with pkg/seaice dynamics:
225    - fix domain of computation (interior only, required for exf) and do exchanges
226    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
227    o towards a standard way of dealing with multi-threading in MONITOR
228      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
229    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
230       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
231    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
232    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
233    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
234       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
235    o tracer advection:
236     - clean-up and simplify calc_common_factors.F
237     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
238       advection subroutine (but still not used within DST advection S/R)
239    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
240    
241    checkpoint58j_post
242    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
243      from file (collects calls previously in FORWARD_STEP)
244    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
245    o adjoint store dir. adjusted accordingly
246    o genmake2
247      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
248    
249    checkpoint58i_post
250    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
251      on wind stress (SEAICEstressFactor defaults to 1.)
252    o Total number of Timers is finite (<=40): comment out 2 non-essential one
253      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
254    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
255      on CS-grid: no longer loosing mass.
256    o exf & curvilinear-grid: no longer modify longitude xC & xG.
257    o pkg/ggl90: fix sloppy output and fix a bug
258    o pkg/seaice: added SEAICEuseEVPpickup parameter
259      - Set to false in order to start EVP solver with
260        non-EVP pickup files when using SEAICEuseEVP
261      - fix sign error in diffusion in seaice_calc_rhs
262    
263    checkpoint58h_post
264    * Modifications for bottom topography control
265      o replace hFacC by _hFacC at various places
266      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
267      o add non-self-adjoint cg2d_nsa
268      o update autodiff support routines
269      o re-initialise hfac after ctrl_depth_ini
270      o works for 5x5 box, doesnt work for global_ocean.90x40x15
271    * Adding verification for 5x5 box (4-layer) bottom topography control
272    
273    checkpoint58g_post
274    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
275       used for mean seasonal cycle, mean diurnal cycle); add an example
276       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
277    o pkg/ggl90:
278      - add parameter (minimum surface kinetic energy)
279      - fix bug (avoiding division by zero)
280    o couple pkg/thsice to pkg/seaice:
281      - modify advection in seaice to accomodate new scalar fields to be advected
282      - only muliDimAdection scheme work with seaice/thsice
283      - mapping of thsice-variables to seaice-variables, back and forth
284      - does not break the verification experiments, but does not give the
285        desired results either
286    o pkg/seaice
287      - make (default) second order advection a bit less confusing?
288    
289    checkpoint58f_post
290    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
291      to pkg/seaice):
292      - new routines thsice_map_exf and thsice_get_exf provide the interface
293      - add an additional formal parameter to thsice_solve4temp
294    o pkg/exf:
295      - add new fields wspeed, snowprecip (to be able to couple to thsice)
296      - correct Stefan-Boltzmann constant
297      - new parameter for longwave surface emittance
298      - separate some stuff from exf_bulkformulae into new routines  
299        exf_radiation, exf_wind
300      - add new parameters and constants: longwave emissivity for ocean, ice
301        and snow, evaporation parameters over ice
302      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
303        either wind from stress or stress from wind
304    o pkg/thSIce:
305    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
306    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
307       and THSICE_CALC_THICKN
308    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
309    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
310      to make debugging easier.
311    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
312    o pkg/bulk_force:
313      - clean-up comments and parameters ;
314      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
315    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
316      generate new output for test-experiment: aim.5l_cs.thSI
317    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
318      testreport accordingly
319    
320    checkpoint58e_post
321    o SEAICE_CGRID adjoint done
322    o R_STAR adjoint implemented.
323      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
324      * need to sort out init. of h0facc, etc.
325    o Make pkg/profile fully independent of ecco,cost, etc. stuff
326      to be able to use it in pure forward.
327    
328    checkpoint58d_post
329    o upgrade simple test-experiment to tutorial example:
330     step.1: duplicate the experiment and (step.2) will remove the old copy.
331      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
332      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
333      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
334      tutorial_global_oce_biogeo    <- copy of dic_example
335      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
336      tutorial_plume_on_slope       <- copy of plume_on_slope
337      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
338      tutorial_global_oce_optim     <- empty for now (David ?)
339      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
340     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
341    o correct a sign problem in cost_scat.F
342    o obcs and ptracers: fix boundary conditions for advections schemes
343      with larger stencil
344    o thsice adjoint: start
345    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
346      completeness
347    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
348      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
349    o ptracers adjoint:
350      * avoid extensive recomputatations
351      * fix missing re-init. of gptr (missed by TAF)
352    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
353      me to turn off the excessive output to STDOUT that this package produces
354    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
355      and add those terms in Vector-Invariant formulation.
356    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
357      if the control period (xx_hfluxperiod etc) is 0
358    o in profiles pkg, clean routines and fix details
359    o in ecco pkg, reading ssh data:
360      fix problem in case the model does not start at iter0=0
361    o fix mnc-pickup/restart for ptracers
362    o new package prifiles:
363      code to compute profile-based cost by Gael Forget
364      (modifs in ecco, ctrl, autodiff)
365    o Benign bug fix in initialization (spotted by M. Mazloff) of
366      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
367    
368    checkpoint58c_post
369    o adjoint: finish NLFS adjoint and provide reference output in
370      verification/global_ocean.90x40x15/results_ad_nlfs
371    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
372      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
373      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
374      with SEAICE_CGRID defined.
375    o move calendarDumps from "data" to "data.cal" and clean-up the code
376      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
377    o add useEXF & useCAL flags (for now, set in hard-coded way)
378    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
379      (were missing in NH mode, and wrong in quasihydrostatic mode).
380      waiting for Chris updated version of calc_gw to add those CALLs.
381    o fix bug in quasihydrostatic S/R ;
382      add a test for this option: global_ocean.90x40x15.qshyd
383    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
384      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
385    o add on/off flag useOffLine for package OFFLINE
386    o seaice:
387      - modify advection so that it works also on the C-grid
388      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
389        problem in multi-tile runs with C-grid
390      - add flags for clipping ice velocities and/or masking solver forcing
391      - fix drag (ocean on ice) formulation and a bug that caused noise in the
392        C-grid solver
393      - added a few comments to seaice_diffusion.F
394      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
395        are now exclusive)
396      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
397        required re-ordering the code a little:
398       + make DAIRN global variable (defined in SEAICE)
399       + move computation of the viscosities eta and zeta into a new separate
400         routine (because I need to recompute them in seaice_ocean_stress.F)
401    
402    checkpoint58b_post
403    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
404      update output.txt of exp. aim.5l_cs.thSI
405    o various mnc cleanups and improvements:
406      + shrink lookup tables by factor of ~4
407      + better error reporting when running out of lookup space
408      + able to handle longer path/file names (up to 500 chars)
409    o adjoint:
410      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
411      - TBD: "hidden" mom_vecinv recomp. in dynamics
412    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
413     (allow to differentiate between forcing components using new integer flags:
414      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
415     and add new flag to put Dissipation tendency out of Adams-Bashforth.
416    o ecco
417      - enable trend removal from SSH anomaly obs.
418    o adjoint
419      - a fix for PmEpR when #undef EXACT_CONSERV
420      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
421      - try to fix "hidden" recomp. in forward_step for NLFS
422        (NLFS seems broken sometimes after I checked it in)
423    o seaice:
424     - add c-grid version of the dynamic solver:
425       + three new routines that are the c-grid substitute lsr, dynsolver
426         and ostres
427       + put a few fields that were local to dynsolver into global common
428         blocks, so that I can move the computation of stresses etc into
429         seaice_lsr (saves coding but may break the adjoint).
430     - replace more hardwired parameters by runtime parameters
431     - add ice masks that mask the rhs of the implicit solvers where there
432       is no ice (commented out in seaice_dynsolver, because i am not sure
433       if this works properly), eventually this should replace the clipping
434       of ice velocities in seaice_dynsolver to +/-40cm/s.
435    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
436      include it only where its needed
437    o move balancing of fluxes before the call of external_forcing_surf
438    o seaice:
439      - correct units of turning angles (now they are really in degrees)
440      - move computation of GWATX/Y out of main routine into dynsolver
441      - initialize GWATX/Y in seaice_init
442    o Apply mask on Fresh-Water flux (needed for SSH forcing).
443      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
444    o seaice: add runtime flags for turning angles (default to zero)
445    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
446      and trend from exf forcing and ctrl control adjustments
447    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
448      (since checkpoint57x_post)
449    o change the default rotation period to 86164.s = the Earth rotation
450    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
451      and based on a reference stratification. Tested within hs94.cs-32x32x5.
452    o seaice advection: add code for choosing between the default (2nd order
453      central differences) and multiDim advection schemes provided by
454      pkg/generic_advdiff
455    o seaice:
456      - removed all references to SEAICE_GRID.h fields from
457        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
458        (cubed-sphere configuration will change a little)
459      - grid computations in seaice_init are obsolete now.
460      - cleaned up code a little so that is easier to read (hopefully).
461      - added new (better?) discretizations of default advection and diffusion
462        (turn on with SEAICEuseFluxForm)
463      - replace 1 in 3d global fields by kSurface in growth.F
464      
465    checkpoint58a_post
466    o seaice:
467      - bug fix in advect.F
468    o shelfice:
469      - separate shelfice load anomaly from pload (breaks with time
470        dependent forcing), => introduce constant field shelficeLoadAnomaly.
471        Its default is 0., but it may be computed more cleverly from (unknown)
472        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
473        done offline. A good approximation of the pressure load anomaly is
474        necessary to avoid large initial adjustment processes underneath
475        deep-reaching shelfice.
476      - small fix in ISOMIP shelfice_thermodynamics
477      - add more sophisticated thermodynamics of Hellmer (1989), this is
478        now the default
479      - give a few constants more intuitive names
480    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
481      if bulk formulae are used in long integration (especially EmPmR). Turn
482      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
483      if balancePrintMean, the imbalance that is substracted is printed to
484      STDOUT.
485    o fix bug (typo) in obcs_apply_eta.F
486    o add a new package shelfice which enables us to model the circulation
487      underneath shelf-ice with draughts of hundreds of meters.
488     - works
489     - to do: + include improved thermodynamics
490              + check whether kSurfC (from model/inc/SURFACE.h) can be used
491                instead of new field kTopC
492              + can we use topoFile, Ro_surf and existing code in ini_depth.F
493                instead of new field R_shelfIce and new code in ini_depth.F
494                and ini_mask_etc.F?
495              + adjust vertical mixing schemes?
496    o seaice pkg:
497     - add a cpp-flag to include a simple formula for a salinity dependent
498       freezing point of sea water at the surface
499     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
500       meridional stresses are now different (and hopefully correct)
501    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
502       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
503       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
504    o pkg/diagnostics: add options and parameters for regional-statistics
505       diagnostics ; define regions by reading a region-mask from a file
506       (might add other options later)
507    o pkg/bulk_force:
508     - add option and parameters to use AIM surface-flux formulae.
509     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
510       others forcing fields (defined in PARM05, parameter file "data") are loaded
511       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
512     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
513     - use the right EXCH call for uwind,vwind (to work on CS-grid).
514     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
515       and parameters (note: calcWindStress replaces .NOT.readwindstress).
516     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
517    
518    checkpoint58
519    o add "--embed-source" option to genmake2 which, when the supporting
520      tools can be compiled (as determined by genmake2) will turn on the
521      embed_files package which then embeds the entire MITgcm source code
522      (*.[fFhc] + Makefile) used for the build within the executable
523      - requested by CNH but off by default
524      - adds a paltry <9MB to the mitgcmuv executable in most cases
525      - only writes the output when useEMBEDSRC in eedata is true
526    o clean up 3-dim. relaxation codes:
527      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
528      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
529      * Thanks to Tom Haine for testing!
530    
531    checkpoint57z_post
532    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
533      affects output (@ truncation level) of exp. plume_on_slope ; updated.
534    o fix the pickup behavior for obcs in combination with ptracers
535    o fix a bug in ptracers_external_fields_load
536    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
537      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
538    o transfered surface NH pressure to eta field (if exactConserv).
539    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
540         and update lab_sea output.txt file.
541    o completing 3-dim. relaxation code: additional term
542         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
543      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
544      * At compile time, in "EXF_OPTIONS.h" set
545          #define  ALLOW_CLIMTEMP_RELAXATION
546          #define  ALLOW_CLIMSALT_RELAXATION
547      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
548          tauThetaClimRelax3Dim = 15552000.0,
549          tauSaltClimRelax3Dim  = 15552000.0,
550      * 3 cases:
551          1) Use a constant-in-time 3-dim. field
552          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
553          3) Real-time relax. to time-evolving prescribed field
554    o Adding Laplacian-type smoothness constraint on
555      initial and boundary (forcing) controls (ic, bc)
556      * enable at compile-time via
557        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
558      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
559      * Absolute scale somewhat unclear so far
560      * no area weighting was included since no other cost term does so far
561    
562    checkpoint57y_post
563    First step for a NLFS adjoint
564    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
565    o new init. routines for calc_r_star, calc_surf_dr
566    o still need to deal with ini_masks_etc
567    o testreport seemed happy
568    checkpoint57y_pre
569    
570    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
571    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
572    o add new offset feature to offline pkg (plus minor cleanup)
573    o cfc fixes for final year of integration
574    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
575      be in GCHEM_OPTIONS).
576    
577    checkpoint57x_post
578    o fix testreport Pb in multiple test experiment.
579    o cleanup our namelist syntax in verification:
580      - make it more F95 standards compliant (some work still needed)
581      - allows the vast majority of our tests to work with gfortran
582    o Non-Hydrostatic:
583     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
584     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
585    o Allow to apply AB on T,S rather than on AB(gT,gS):
586     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
587     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
588       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
589     - need a "clever" read_pickup to restart from the other AB formulation
590    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
591    o remove some unused variables (reduces number of compiler warnings)
592    o adjoint
593      * Disable useVariableViscosity for adjoint for time being
594        (there are a number of extensive recomputations)
595      * Initialize certain variables needed for adjoint
596    
597    checkpoint57w_post
598    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
599                 fix the singleCpuIO RS version of MDSWRITEFIELD
600       and add a WARNING if using globalFiles=T with multi-processors.
601    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
602      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
603    o tracer advection scheme:
604      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
605       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
606       was not very convenient).
607      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
608       (further tests needed for the implicit DST & Flux-Limiter schemes).
609    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
610      and sRef for convenience, handy, when you want to initialize
611      ptracers in a large domain with a constant non-zero value. Also,
612      untangle ptracers_init.F a little.
613    
614    checkpoint57v_post
615    o change dome exp. to use variable viscosity in side-drag terms.
616    o remove all the files from the cfc_offline test since they are now
617      incorporated into tutorial_cfc_offline which has been producing
618      identical results for a few days of testing
619    o add new parameter: sideDragFactor to enable half-slip-side BC
620      and change side-drag S/R to use viscosity from mom_calc_visc
621      (can switch back by setting sideDragFactor=0.); affects results at
622      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
623       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
624    o vorticity & strain are now computed without masking, to account for
625      no-slip-side BC in variable viscosity calculation ; mask is applied
626      anyway later on, before computing advection/coriolis terms.
627    o modify exp4 to test new obcs support for reading from external files
628      and for passive tracers
629    o fix behavior of ptracers_monitor when monitor output is written to a
630      netcdf-file; still not independent of monitor.F (writes in the same
631      file).
632    o change default value of tRef (put a uniform, meaningful value for ocean
633      & atmos) and initialize sRef (was missing, as Martin mentioned).
634    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
635      to be proportional to enstrophy dissipation length.  Thus,
636       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
637      This is now consistent with Smagorinsky and with the manual.
638    
639    checkpoint57u_post
640    o OBCS and PTRACERS: add open boundary support for passive tracers
641      - either use homogenous (pseudo) v.Neumann conditions or prescribe
642        OB-values from file; this is not different from the way theta and salinity
643        are treated
644      - however, Orlanski-radiation conditions are not supported, and the model
645        will stop if you use pTracers and Orlanski at the same time.
646      - beefed up the rountine obcs_external_fields_load: now only those open
647        boundary values are overwritten with values from files for which there
648        are really files, otherwise the OB-fields remain untouched. This makes
649        it possible to use different OBs at different ends of the domain (as
650        with EXF)
651    o reduce number of exch calls in shap_filt (s2).
652    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
653      truncation level) 4/5 MLAdjust test results (11&12 digits match).
654    
655    checkpoint57t_post
656    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
657    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
658      same truncation, independent of the face number: affects affects several
659      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
660    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
661      note that biharmonic viscosity + no-slip was not tested in any experiment.
662    o fix bug in non-linear free-surf side-drag ; generate new output for
663      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
664    o make mnc honor the writeBinaryPrec flag for most kinds of output
665    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
666    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
667      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
668    o add brackets in multi-terms sum to get same truncation, independent of
669      the face number (manage to get exactly same value of gU,gV at the cs-edge)
670      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
671    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
672      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
673      a maximum grid-scale Reynolds number.  Also, changes all length calculations
674      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
675      Suggested values of viscosity parameters found in mom_calc_visc.
676      Many new viscosity diagnostics available.
677    
678    checkpoint57s_post
679    o Add clearing-house for viscosity calculations, mom_calc_visc and
680      correct numerous bugs in LeithD and Smagorinsky discretizations.  
681      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
682      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
683      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
684      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
685      The Strain-Tension form is now called with useStrainTensonVisc=.true.
686      ViscAhStrain and viscAhTension are now retired.
687    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
688    o In response to JMC's bug report, genmake2 now ignores any soft-links
689      that it finds in the *current* directory when searching for files.
690      Soft-links found in any other source directories will still work as
691      they did before.
692    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
693      a C routine to unlimit the stack size
694    o mnc-ify pkg/aim snapshot vars
695    o mnc-ify pkg/land as requested by Daniel
696    o various changes to mnc including:
697      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
698      - output can now be grouped so that all files within a group
699          change the ITER portion of their names in lock-step together
700      - can now read ("global") PER-FACE (in addition to PER-TILE) files
701          and works with both EXCH1 and EXCH2 (but needs more testing)
702      - writing works for all verification test cases w/ g77 on Linux
703    
704    checkpoint57r_post
705    o make MNC variable initialization happen earlier
706    o add diagnostics for (almost) each term of the momentum Eq.
707    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
708    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
709    o remove MINIMAL_TAVE_OUTPUT option ;
710      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
711    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
712      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
713    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
714    o add time-dependent SST, SSS control
715    o cost terms in ecco/ modularized (new cost_generic.F)
716    o cost_averages routines are modularized (new cost_averagesgeneric.F)
717    o new infrastructure for seaice model vs. obs misfits in seaice/
718      * driver from the_main_loop.F is seaice_cost_driver.F
719      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
720      * gradient check in Exp. 6a of natl_box_adjoint/
721    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
722      (see README file)
723    
724    checkpoint57q_post
725    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
726    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
727      - bug was reported by Jean-Michel and Ian Fenty
728    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
729      update exp. cpl_aim+ocn output.
730    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
731      Needed for high-res. runs with large global files
732      to be able to limit tapelev size
733    o Changed some tests for adjoint:
734      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
735      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
736      * global_ocean.90x40x15/ back to default 3-level checkpointing
737    o Modifications to enable scripted COMMON to MODULE conversion
738      * verification/OpenAD/code/ has necessary scripts and description;
739      * converts, compiles and runs successfully;
740    
741    checkpoint57p_post
742    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
743    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
744      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
745    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
746    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
747      (was already the case for dissipation with mom_vecinv,
748       and also the case for grad.PhiHyd when staggered-timeStep)
749      This will allow to put dissipation out-off the AB time-stepping.
750     Unfortunately, affects truncation error. Update output of exp. that "fails"
751      (cg2d matching number) and leave the others for later: front_relax(10),
752      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
753      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
754    
755    checkpoint57o_post
756    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
757      (2) its ready to be documented during the 20050801 DocFest
758    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
759      for ideal_2D_oce and lab_sea on linux_ia32_g77
760    o set to #undef CTRL_SET_OLD_MAXCVARS_30
761      in global1x1_tot/code_seaice_adj to access indices 32, 33
762      (worth another tag)
763    
764    checkpoint57n_post
765    o adding precip control xx_precip 32
766    o adding swflux control xx_swflux 33
767    o Replacing 10 forcing penalty cost routines by 1 generic.
768    o Implementing partitioning in time-mean and variable adjustment
769      for atmos. state.
770    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
771    o in natl_box_adjoint:
772      * updated exp 1 to 10
773        (but does not have time-mean vs. variable split results yet)
774    o updated global1x1/*_seaice_adj/
775      to incorporate latest changes
776    o enable useSingleCpuIO for mdsio vector routines
777      (applies in particular to tapelev I/O)
778    o removed inefficient K-loop in all active_file*control*.F
779    
780    checkpoint57m_post
781    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
782      and advect_cs (use EXCH-2 and standard cs-32 grid files).
783    o pkg/exch2: filling of face-corner halo regions is optional
784      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
785    
786    checkpoint57l_post
787     tag before updating tutorials (pre-release-2)
788    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
789       for output and interpolation of input fields onto model grid)
790    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
791       Affects results of exp. rotating_tank ; update output.txt.
792    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
793          and taking the square quantity and/or using a fraction-weight field.
794    o fix aim_diagnostics_init.F mate numbers.
795    o add mnc output capability to diagnostics/diagstat and update
796      our cvsignore files for the ACSII output generated
797    
798    checkpoint57k_post
799    o lab_sea now uses diagnostics package and provides a suite of
800      new EXF diagnostics output.
801    
802    checkpoint57j_post
803    o exf
804      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
805        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
806        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
807      * extended diagnostics output
808        - now includes all EXF variables
809        - hs, hl moved to common block
810        - separate S/R for diagnostics, called after ctrl vector is added
811        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
812        - EXFqnet contains true Qnet (i.e. includes qsw)
813      * updated verif. lab_sea, global_with_exf
814      * Rearranging hflux (exf_mapfields -> exf_getforcing)
815        to ensure that diagnostics sees a true EXFqnet
816    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
817    o diagnostics pkg: change pointers so that 1 diagnostic can be used
818      several times with different frequencies.
819    o mnc-ify the thsice package as requested by Daniel Enderton
820      - the monitor--MNC output needs work
821      - many attributes need to be added (most are currently blank)
822    o mnc-ify theaim_v23 package as requested by Daniel Enderton
823      - many attributes need to be added (most are currently blank)
824    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
825    o add Sadourny like discretization to the 4th.O vorticity advection scheme
826    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
827      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
828         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
829    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
830     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
831    
832    checkpoint57i_post
833    o Diagnostics package was changed: diagnostic allocation is now deactivated
834      by setting an empty file name in the namelist (used to be by setting 0 frequency)
835    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
836      add 1rst Order upwind vertical Shear.
837    o add a quick fix for A/B checkpointing in OFFLINE mode
838    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
839      end-run around the C/Fortran linking horror in eesup/src/timers.F
840    o added pkg/runclock: allows user to terminate run based on wall clock
841    o added non-hydrostatic scaling parameter: nh_am2
842    o pkg/my82: futile attempt to make results compiler-independent by adding
843      some "_d 0", etc. no effect.
844    o for mnc output, fill the 'T' coordinate var with myTime and create a
845      separate 'iter' variable for iteration count
846    o pkg/diagnostics:
847      add new capability: output of Global/Regional & per-level statistics ;
848      tested against monitor output (including land & thSIce) on various exp.
849    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
850    
851    checkpoint57h_done
852      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
853      data.diagnostics, data.gchem, data.ptracers) is done.
854    
855    o pkg/diagnostics: prepare for Global/Regional statistics.
856      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
857    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
858      and rename it: DIFFERENT_MULTIPLE
859    
860    checkpoint57h_post
861    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
862    o pkg/diagnostics: change output frequency, now in seconds (instead
863      of Nb of iterations). This requires to change data.diagnostics.
864    checkpoint57h_pre
865    
866    o in mnc, let the user create the output dir if both mnc_outdir_date
867      and mnc_outdir_num are false
868    o add fflags() to pkg/diagnostics which allows one to specify, on a
869      per-file basis, the file precision [default behavior is unchanged]
870    o added diagnostics to pkg/kpp, including computation of mixed layer
871      depth based on a temperature/density criterion
872    o updated verification/natl_box to test the new pkg/kpp diagnostics
873    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
874    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
875    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
876      not mnc -- this mistake was found by JMC and is now corrected
877    
878    checkpoint57g_post
879    o add Adams-Bashforth 3rd Order time stepping:
880      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
881      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
882    checkpoint57g_pre
883    
884    o make lambda[Theta,Salt]ClimRelax spatially varying
885      (default remains spatially uniform constant based on tau)
886    o added new control variables
887      * init. uVel, vVel, etanN
888      * lambda[Theta,Salt]ClimRelax
889    o separate masks used for ctrl_pack/unpack 'from write_grid' output
890      (suggested by G. Forget)
891    
892    checkpoint57f_post
893    o add parameter "baseTime" = model base time = time at iteration zero
894      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
895      account for baseTime shift
896    o move Coriolis arrays from PARAMS.h to GRID.h
897    checkpoint57f_pre
898    
899    o mnc-ifying the seaice package
900    o introduced an alternative length scale calculation for use in the limiting
901      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
902    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
903    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
904      as well as grad(vort3).  Made it compatible with both approximate form
905      for the cubed sphere and full form of these gradients.  Added flag
906      useFullLeith to select between approximate and full form.  
907    o add "d0" in getcon.F to reduce differences between compilers/platforms
908      update output.txt of exp. fizhi-gridalt-hs
909    o change port_rand funtion to allow to set the seed.
910    o fix obscure MNC bug involving conversion between reals and integers
911      - it caused no problems with certain (eg. gcc, ifc) compilers but the
912        new version is now more standards-compliant
913    o adjoint-related modifications
914      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
915      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
916      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
917    
918    checkpoint57e_post
919    o Adding eddy stress controls a la Ferreira et al.
920    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
921    
922    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
923      update output.txt of exp. fizhi-gridalt-hs
924    o add more "Z" dimensions and associated coordinate vars to MNC
925    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
926    o parameter calendarDumps: when set, approximate months (30-31 days) and years
927      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
928      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
929      months and years.  Requires pkg/cal.
930    o diagnostics: add pickup functionality
931      - off by default for backwards compatibility
932      - current version only uses MDSIO -- MNC will be added
933    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
934    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
935    
936    checkpoint57d_post
937    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
938    o modify verification/ideal_2D_oce so that it tests the creation of mnc
939      output from the diagnostics package
940    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
941    o make genmake2 more portable by using ".$FS" instead of ".f" for more
942      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
943    o add coordinate variables to the MNC output from the diagnostics package
944    o change MNC-flags default value: true when useMNC=TRUE
945    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
946      the ability (off by default) to read the grid information using MNC
947    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
948    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
949    o do snap-shot diagnostics at the middle of the time-interval (instead of
950      at the end).
951    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
952      new test for AIM with thSIce + slab-ocean
953    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
954    o move state variable diagnostics to the beginning of the time step ;
955      (note: still needs some work specially for snap-shot diagnostics)
956      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
957    
958    checkpoint57c_post
959    o Change testing option (-ieee) to get closer agreement between g77 & ifort
960    o generate new output.txt files on faulks with g77 & the new -ieee option
961    checkpoint57c_pre
962    
963    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
964      update output.txt of exp. global_ocean.90x40x15
965    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
966      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
967    o add saltFlux(+File) forcing capability with periodicExternalForcing
968    o allow to use pkg diagnostics for GM-Redi & ThSIce output
969    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
970    o improvements for the MNC output from DIAGNOSTICS:
971      - correct handling of the unlimitied dimension
972      - all dims now have associated coordinate variables
973      - variables located at U, V, and Corner ("Z") points are now written
974        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
975        *all* data points are output
976    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
977    o added pkg/seaice/seaice_monitor.F
978    o mdsio_readfield.F can now read files visible only to master MPI process.
979    o pkg/seaice: some test code for ice-modified ocean stress
980    o exf_getffields interpolation defaults to bilinear for all scalar forcing
981      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
982      spurious negative numbers for precipitation and humidity.  Will cause
983      some small numerical differences for integrations using pkg/exf/exf_interp.F.
984    o pkg/ctrl/
985      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
986        May be enabled via doPackDiag
987      *  introduce z-scaling of
988         + gradient (doZscalePack) and
989         + control (doZscaleUnpack)
990    o pkg/mdsio/
991      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
992      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
993    
994    checkpoint57b_post
995    o simplify options in diagnostics_fill arguments (remove weird combinations)
996    o fix MNC coordinate variables so that they now contain per-face index
997      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
998      general, EXCH2 grids are only aligned to a "local" coordinate system
999    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1000    o Implement instantaneous output within pkg diagnostics:
1001      setting a negative frequency in data.diagnostics produces
1002     "snap-shot" output (as opposed to time-average if freq > 0)
1003    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1004      NOTE: change ptracer diagnostics name: use 2 characters to work with
1005            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1006    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1007      becomes the coordinate variable for the 'T' dimension
1008    o add CF-style coordinate variables to MNC
1009      - just a first cut:  numbers are meaningless on the cubesphere and
1010        missing along the T axis but otherwise it works!
1011    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1012    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1013    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1014      this is based directly on what the model compute, so that the content of
1015      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1016    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1017    o clean up build options files for SunOS, in particular
1018      - remove -traditional from xmakedepend
1019      - change -xarch=v9 to -xarch=native for f77
1020      - restore use of make (not gmake)
1021      - add CC=gcc if using g77
1022    o changes per discussion of AM, JMC, & EH3 today:
1023      - move redundant "grid" variables out of "state" -- in preparation of
1024        creating proper CF-style coordinate variables and in recognition
1025        that any/all grid variables can be easily copied (eg. w/NCO) from
1026        the grid files into any of the other NetCDF files
1027      - *always* output grid variables with MDSIO (this will eventually be
1028        changed)
1029      - output MNC grid file if useMNC is true
1030    o every instance of _END_MASTER() has been found and replaced with
1031      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1032      preprocessors
1033    o re-arrange diagnostics pkg initialisation:
1034     - allow each package to extend the available diagnostics list
1035     - add some checking and fix small problems (multi-threaded, ...)
1036     - new S/R diagnostics_fill (replace fill_diagnostics):
1037       look through the short list of active diag. (instead of the long list)
1038       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1039    
1040    checkpoint57a_post
1041    o this set of changes restores TAMC compatibility
1042      tested for global_ocean.90x40x15 adjoint on trough
1043      (what a pain)
1044    
1045    checkpoint57a_pre
1046    o some modifs in tools/build_options for sunos
1047    o call ctrl_pack for ctrl at end for optimcycle=0
1048    
1049    checkpoint57
1050    o add horizontal bi-harmonic viscosity for vertical velocity
1051      - new parameter viscA4W (defaults to viscA4)
1052      - affects only non-hydrostatic code
1053      - to be done: no-slip lateral boundary conditions
1054    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1055    o implement Implicit Vertical advection for pTracers
1056    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1057      (implemented also for implicit vertical diffusion & advection)
1058    o OBCS: extend application of tracer open boundary conditions
1059      to a strip beyond the boundary of width Olx/Oly
1060    o add call monitor to TAF set of required calls (flow directives)
1061      and include in natl_box_adjoint
1062    o untangle a few ifdefs related to cost, ctrl, autodiff
1063      untangel a few ALLOW_ECCO_OPTIMIZATION
1064    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1065      (theta2, salt2 in ecco_cost_weights)
1066    
1067    checkpoint56c_post
1068    o OBCS as control variables
1069      - update ctrl_ad_diff.list, obcs_ad_diff.list
1070      - remove balance of obcs controls from default
1071      - fix index bug nobcs in ctrl_init
1072      - fix dummy fields filen in ctrl_pack
1073      - add dummy weights for obcs
1074    o lsopt: comment out fort.94 output
1075    o optim:
1076      - remove unnecessary header files
1077      - adjusted namelists
1078      - add xerbla.F to Makefile
1079    o exf:
1080      - multiple modifications of exf_check_range
1081      - unit change in exf_init_runoff from [m/year] to [m/s]
1082    o mdsio:
1083      - i/o-vector change debugLevel from debLevA to debLevB
1084    
1085    checkpoint56b_post
1086    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1087      is called from DO_THE_MODEL_IO
1088      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1089      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1090      - clean up PTRACERS_WRITE_TIMEAVE a little
1091    o add another verification experiment that tests both the cfc-pkg and
1092      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1093      reactive tendencies treated inline with regular timestepping
1094    o testreport previously did a lousy job of comparing small numbers, so
1095      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1096      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1097      testreport.
1098    o ptracers_monitor: bug fix for MPI
1099    
1100    checkpoint56a_post
1101    o GCHEM: finish reorganizating the package
1102      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1103        (introduces another 3D-array for each passive tracer, but only if
1104        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1105        gchemTendency is not needed because the timestep is done separately)
1106      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1107      - GCHEM is now---more or less cleanly---separate from PTRACERS
1108      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1109        so clear to me how that should be done in a general way.
1110    o CFC: improve formatting of output in CFC_ATMOS
1111    o PTRACERS:
1112      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1113        that ALL experiments with ptracers enable can be checked. This makes
1114        GCHEM_MONITOR obsolete.
1115      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1116        monitorFreq
1117      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1118    o add PTRACERS (PTR0[1-5]) to testreport output
1119    o exf_check_range:
1120      * default changed to .TRUE.
1121      * will check values for niter0 if debLevA, every timestep if debLevB
1122      * STOP in exf_check_range if 'out of range'
1123      * range chosen generous to allow for potential extema
1124      TBD: a version with stricter range
1125           permitted range would be runtime parameters
1126    o GMredi:
1127      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1128      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1129      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1130    o GCHEM:
1131      - move call to GCHEM_FORCING_SEP, so that it is now called before
1132        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1133      - introduced a useGCHEM runtime flag and applied it everywhere.
1134      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1135        this flag is now only visible within GCHEM-pkg routines.
1136      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1137        be replaced by a 3D array that is computed before thermodynamics; for
1138        this, the tracer ID iTracer had to be included into the parameter list
1139        of ptracers_forcing
1140      - set up forward_step to call gchem_forcing, that will replace
1141        gchem_forcing_int in ptracers_forcing
1142      - cleaning up
1143    o small cleaning of exch2: remove files that are also in eesupp/src
1144    
1145    checkpoint56
1146    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1147    o mnc: cleanup "full" files--fixes out-of-memory problem
1148    o ECCO-GODAE
1149      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1150      * fully merged and updated from SIO code
1151        windstress sign change affects
1152        - exf_inscal_[u/v]stress
1153        - sign of xx_tau[u/v] adjustments
1154        - signs in cost_scat
1155      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1156      * natl_box_adjoint updated and compressed
1157      * 2-level checkpoint switch added
1158        (tested in EXP. 1 of natl_box_adjoint)
1159      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1160    o SVD
1161      * first complete, non-hacked version for SVD calculations
1162      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1163        performed via direct access files admtlm_vector.it????
1164        (via ctrl_[un]pack)
1165      * optimcycle is used for ARPACK iteration counter
1166        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1167      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1168        and add linear transforms where necessary
1169      * controls are initial/final SST, SSS (can be extended; need to check
1170        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1171    o mdsio: filename info to both stderr, stdout
1172    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1173      from sign change
1174    
1175    checkpoint55j_post
1176    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1177      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1178    o add consistent build directories and .cvsignore files to verification
1179    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1180    o make all subroutines 30 or less characters in length for certain older
1181      compilers to work (a thorough search only turns up two routines in
1182      pkg/ptracers)
1183    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1184      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1185    
1186    checkpoint55i_post
1187    o change arrays for total vertical diffusivity (2.D if explicit,
1188      3.D if implicit) ; each ptracer uses its own background value.
1189    o added mnc/NetCDF output capability to ocn_compon_interf
1190      - added bits to verification/cpl_aim+ocn so that it can run on
1191        ITRDA and other clusters without the mpirun "-wd" option
1192    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1193      configuration
1194    o give MNC the ability to create additional files rather than
1195      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1196      - the default is just less than 2GB which is a practical limit
1197        on many systems
1198    o Compute the non-local term using either KPP vertical diffusivity (=default)
1199       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1200    
1201    checkpoint55h_post
1202    o add verification test "vermix"
1203    o remove all the *_ioinc flags and replace with the single global
1204      outputTypesInclusive flag
1205    o allow to set a vertical profile of vertical diffusivity for T & S
1206    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1207    o useMNC moved from data.mnc to data.pkg
1208    
1209    checkpoint55g_post
1210    o Renaming carbon AD experiments to comply with testreport conventions
1211    o Updating adjoint of Held-Suarez hs94.1x64x5
1212    o Fixing directives for non-ECCO forward_step, after ECCO directives
1213      have been fixed to avoid recomp. of do_oceanic_phys
1214      Works well for global_ocean.90x40x15,
1215      but recomp. issue remains for carbon
1216    o Updating adjoint output for natl_box_adjoint after
1217      pkg/ecco has been modified (see taga c55d_post)
1218    
1219    checkpoint55f_post
1220    o rename to timeave_init_fixed
1221    
1222    checkpoint55e_post
1223    o some delicate re-shuffle of store directives to avoid one
1224      extra call of do_oceanic_physics
1225      affects ecco_the_main_loop.F, do_oceanic_physics.F
1226      checkpoint_lev1_directives.h
1227    o NB: this may break global_ocean adjoint temporarily,
1228      but it is clear how to fix it. Will do later, need this now.
1229    
1230    checkpoint55d_post
1231    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1232    o ecco_cost_weights is modified to 1x1 runs
1233    o modifs to allow observations to be read in as
1234      single file or yearly files
1235    o enable to read exf forcing fields as either
1236      single file or yearly files (flag useExfYearlyFields)
1237    checkpoint55d_pre
1238    
1239    o switch between 2-level and 3-level checkpointing
1240    o add ability of MNC to write local and "partial" (eg. 2D slices where
1241      the full 3D field is never actually stored) arrays to NetCDF files
1242      with the correct (that is, the complete multi-dimensional) set of
1243      array indicies
1244      - used in mom_vecinv() to write the diagFreq output
1245      - tested (demonstrated) in verification/aim.5l_cs
1246    o further mnc-ification
1247      - add verification/lab_sea to the list with mnc setups
1248      - fix undefined mnc v-names in cd_code
1249      - add kpp to mnc output (both snapshot and timeave)
1250    o non-hydrostatic code
1251      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1252        in calc_gw.F
1253      - defaults to viscAh
1254      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1255        friction or Leith) in non-hydrostatic mode, as long as there is
1256        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1257    o pkg/cost
1258      extend simple cost functions to treat time mean quantities
1259      (T,U,V) via cost_accumulate_state from cost_tile
1260    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1261        be 2 times larger than the minimum size the advection scheme requires.
1262        now get a perfect conservation of salt in advect_cs test-exp (updated)
1263    o GGL90 (Gaspar's TKE mixed layer)
1264      - add horizontal diffusion of TKE, requires exchanges in
1265        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1266        default. In OPA there is no horizontal diffusion of TKE but the
1267        mixing coefficients are computed from a horizontal average of TKE of
1268        6 points or so. I think that diffusion has a little more physical
1269        justification.
1270      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1271        was in vain)
1272      - mask tke-variable in ggl90_init
1273    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1274    o fix biharmonic diffusion on CS-grid.
1275    o more obcs stuff
1276      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1277        for reading boundary values. This routine is called from
1278        obcs_prescribe_read
1279      - updated obcs_check
1280      - changed sponge layer relaxation parameter units for days to seconds
1281      - turned off sponge layer by default
1282      - changed argument list of OBCS_CALC to myTime+deltaTclock
1283      - fixed about 35 bugs in obcs_external_fields_load
1284    
1285    checkpoint55c_post
1286    o obcs stuff
1287      - new runtime flags useOBCSprescribe, useOBCSbalance
1288      - re-arranged obcs_calc
1289      - moved exf_getobcs to obcs_prescibe_read
1290        obcs_prescibe_read is called after ORLANSKI stuff
1291        and independent of it (executable can contain all).
1292      - updated obcs_check
1293      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1294        These may be necessary only if tangential velocities are
1295        prescribed at OB, not sure, needs testing.
1296    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1297      which simplifies the calls and passes the ifc check-bounds test
1298    
1299    checkpoint55b_post
1300    o add a 2D scalar, Z location, exchange_2 routine.
1301    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1302      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1303      affects advect_cs results (for the wrong reason): update output.txt
1304    o use a more standard discretization for biharmonic viscosity ;
1305     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1306      affects results of dome set-up: update output.txt
1307    o fix gad_advection.F (CubedSphere part), back to version 1.23
1308    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1309    
1310    checkpoint55a_post
1311    o merged code to
1312      * prescribe/read time-dependent open boundaries
1313        (works in conjunction with exf, cal)
1314      * sponge layer code for open boundaries
1315      * each boundary N/S/E/W now has its own CPP option
1316        (healthy for the adjoint)
1317    
1318    checkpoint55
1319    o up-to-date adjoint of previous breaks
1320      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1321      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1322      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1323      - carbon: * remove tr1-related adjoint verification
1324                * add ptracer as control variable
1325    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1326      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1327    
1328    checkpoint54f_post
1329    o in verification/carbin/ remove experiment related to
1330      ALLOW_PASSIVE_TRACER (array tr1 etc)
1331      code_ad/ input_ad/ results_ad
1332    
1333    o add two new packages
1334      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1335        + subject to optimization (memory)
1336      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1337        + subject to reordering (many GOTOs in the original code)
1338        + so far opps is called for every (i,j) point, and then operates in
1339          the vertical; one may want to reorder the scheme in order operate in
1340          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1341          fields)
1342    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1343      - all verification tests compile and run with linux_ia32_g77
1344      - defaults are compatible with current input files--nothing
1345        should change if you were not previously using MNC
1346      - MNC output has been added in numerous places (eg. timeave)
1347        but there are still a few writes not yet do-able with MNC
1348        (this is in progress)
1349      - flags now allow for either/or/both use of MDSIO and MNC and
1350        documentation will soon follow
1351      - numerous small formatting cleanups for ProTeX
1352    o add version info (via BUILD_INFO.h) to MNC and stdout
1353    
1354    checkpoint54e_post
1355    o add two new packages
1356      - pp81 (Packanowski and Philander, 1981), Richardson number and
1357        stratification dependent mixing
1358      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1359      - these scheme operate in a similar manner as KPP (without ghat, of
1360        course), however there is only one diffusivity that is used for both
1361        temperature and salinity (and passive tracers)ç
1362    o add offline package
1363    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1364      provided by Stephanie Dutkiewicz
1365    o genmake2: add ability to search for C compilers and cleanup test output
1366      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1367    
1368    checkpoint54d_post
1369    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1370    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1371      leading to additional shift by 5 days each year of integration
1372       (i.e. leading to considerable offset over the years)
1373    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1374    o start with no AB and no initial filtering (staggerTimeStep):
1375      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1376    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1377      (external loading & cpl import/export stay in forward_step.F)
1378    o update coupling interface to work with new staggerTimeStep
1379    o change MDSIO ptracers_pickup.
1380    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1381    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1382    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1383    
1384    checkpoint54c_post
1385    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1386      this affects (truncation error) output.txt of test-exp:
1387       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1388    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1389    o change Qnet to always be the net heat flux, (+upward).
1390      affects (truncation error) output of natl_box exp.: updated
1391    o define the max number of passive tracers in PTRACERS_SIZE.h
1392    o start to test mnc routinely in exp0
1393    o add sea-ice loading (sIceLoad) as a new forcing field.
1394    
1395    checkpoint54b_post
1396    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1397       impressive on Altix and Opteron systems)
1398    o diagnostics can now write NetCDF files through the mnc package
1399    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1400    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1401    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1402      affects (truncation error) output of lab_sea & natl_box exp.: updated
1403    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1404    
1405    checkpoint54a_post
1406    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1407    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1408    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1409    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1410      + internal_wave (shift in writing cg2d_ini_res)
1411    checkpoint54a_pre
1412    
1413    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1414      - modified verification/lab_sea and natl_box_adjoint accordingly
1415    
1416    checkpoint54
1417    checkpoint53g_post
1418    o prepare splitting of thermodynamics: store convect.counter in common block
1419    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1420      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1421    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1422    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1423    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1424    o restore adjointability
1425    
1426    checkpoint53f_post
1427    o modifications that affect AIM experiment results (update output.txt):
1428      - no advection of S at top interface Nr (pkg/generic_advdiff)
1429      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1430    o AIM pkg:
1431      - include stability function into surf.Flux derivative relative to Tsurf
1432      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1433    
1434    checkpoint53e_post
1435    o merged cylindrical coord configuration
1436    o added rotating_tank experiment
1437    checkpoint53e_pre
1438    
1439    checkpoint53d_post
1440    o faulks upgraded: re-generate output.txt that have changed:
1441       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1442    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1443    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1444    o added Sadourny discretization of Coriolis
1445      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1446      - re-enabled use of omega3 (useAbsVorticity)
1447    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1448      vector-invariant equations
1449      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1450    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1451      hopefully without new bugs
1452      - still to do: biharmonic friction for non-hydrostatic w
1453    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1454    o regenerated output for global_ocean_ebm (using -ieee)
1455    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1456      of mom_common/
1457      - simple re-arrangement of instructions within computing loop
1458    checkpoint53d_pre
1459    
1460    checkpoint53c_post
1461    o new version of coupler for AIM+thSIce and Ocean models
1462     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1463     - land: change Evaporation of snow
1464     - aim with thSIce: fix bug in snow-precip.
1465    o changes to calc_gw.F
1466     - bug fix for w^2 term near the bottom boundary
1467     - (hopefully) improve the lateral slip boundary condtions for use with
1468        partial/looped cells
1469      - because the bug fix changes two verification experiments anyway (exp5
1470        and plume on slope), change the lateral boundary condition from half slip
1471        to the value of no_slip_sides
1472    o ebm package wasnt quite up to the parallel task. Fixed that.
1473    o Adjoint of EBM package + verification
1474      * TLM OK
1475      * ADM not sufficient accuracy yet (needs further testing)
1476    
1477    checkpoint53b_post
1478    o Commiting new energy balance model to repository
1479      * package is pkg/ebm
1480      * verif. is verification/global_ocean_ebm
1481      * references are in ebm_driver.F
1482    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1483    C        Global thermohaline circulation. Part I:
1484    C        Sensitivity to atmospheric moisture transport.
1485    C        J. Climate 12(1), 71-82
1486    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1487    C        Global thermohaline circulation. Part II:
1488    C        Sensitivity with interactive transport.
1489    C        J. Climate 12(1), 83-91
1490    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1491    C        Destabilization of the thermohaline circulation
1492    C        by atmospheric eddy transports.
1493    C        J. Climate 7(12), 1870-1882
1494    o Will need long integration testing.
1495    checkpoint53b_pre
1496    
1497    o created pkg/mom_common in preparation for variable viscosity code
1498    o renamed and split ini_mnc_io
1499    o pkg/land: only liquid water can diffuse or run-off
1500    o AIM using land: soil wetness availability account for snow
1501    o added printMapIncludesZeros to EEPARMS namelist
1502    
1503    checkpoint53a_post
1504    o restore TAMC compatiility for exf_constants.h
1505      (no usage of _d in .h)
1506    o Additional storing in KPP in an attempt to fix
1507      TAMC problem with adjoint of KPP code.
1508      (no success...)
1509      Identical code works fine with TAF.
1510    o Fixed verification/natl_box_adjoint experiments.
1511      Initial conditions for Experiments 4 and 5 are now
1512      set to "SEAICE_initialHEFF=0", which is more reasonable,
1513      and hence gives results closer to that of Experiment 2.
1514      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1515    
1516    checkpoint53
1517    o stable checkpoint with up to date adjoint
1518      TLM tests only run for 1st grdchk at the moment. Its unclear if
1519      this is a code problem or a problem with resetting code for g_
1520      variables that is being autogenerated wrong.
1521      Otherwise:
1522       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1523       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1524         are both still in chaos following their security messes.
1525    
1526    checkpoint52n_post
1527    o various build (mostly genmake2) changes including:
1528      - ability to build/run more easily within Cygwin and MacOS X
1529      - more complicated Makefiles with a stronger dependence on Gnu Make
1530    o pkg/seaice modifications
1531      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1532        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1533        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1534      - changed proxy for geostrophic velocity and updated
1535        verification/lab_sea/results/* accordingly
1536      - removed ADI dynamic solver from pkg/seaice
1537      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1538        they caused a segmentation fault under certain circumstances
1539      - removed unused field WATR
1540    o bug fix in exf-package:
1541      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1542         now reflect that.
1543    o small fixes in the cal-package:
1544      - set reference date to first of January for the 'model'-calendar
1545      - failing of cal_CheckDate in cal_FullDate now actually results in a
1546        warning
1547    o small modifications in exf-package to increase flexibility:
1548      - change climtempfreeze from a constant to a runtime parameter that
1549        is specified in data.exf_clim (default = -1.9)
1550      - introduce runtime parameter windstressmax (default = 2.0) that is
1551        specified in data.exf
1552    o fix in pkg/thsice:
1553      - update Evap (Tsf changes) to be consistent with Latent heat flux
1554      - maintain snow precipitation unchanged (even if Tsf >=0).
1555     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1556    
1557    checkpoint52m_post
1558    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1559      this does not change any of the results, because myIter=0 in swfrac always
1560      lead to jwtype=2 (the default anyway), but the call makes little sense
1561      as a default
1562    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1563    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1564      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1565    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1566    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1567    o extending useSingleCpuIO option to work with new exch2 I/O format
1568      - old-style, missing-tile I/O is still accessible by defining CPP
1569        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1570    o monitor package can write to NetCDF files and/or STDOUT
1571    o fix re-definition bug in MNC_GRID_INIT_ALL()
1572    o doc/api_reference added
1573      - a framework for building an API Reference Manual using all
1574        the "protex" comments embedded in the code
1575      - see pkg/generic_advdiff, pkg/mnc for examples
1576    o MNC:
1577      - make myThid the last argument for all subroutines
1578      - new default for the grid files: NO halos
1579      - add useMNC and other run-time flags
1580      - separate per-file-group handling of the unlimited dimension
1581      - early initialization of MNC w/ flags read at the eeboot stage
1582        and lookup tables set in initialize_fixed
1583      - write all MNC output to a freshly-created directory
1584    o thermodynamics sea-ice (thsice) is now tested with testreport.
1585    o test exp. advect_cs: use the standard cs32 grid ; update output.
1586    o Added functionality to grdchk:
1587      pick global i,j,k position (or nearest wet) where to perform check.
1588    
1589    checkpoint52l_post
1590    o new land formulation:
1591      a) use ground enthalpy as prognostic variable to ensure exact
1592         energy conservation.
1593      b) account for water temperature and for latent heat of freezing
1594         in all processes (rain, run-off, ground storage)
1595      c) compute surface and ground temperature implicitly.
1596    o aim_v23 modification for new land model:
1597      a) Treat separately land / ocean / sea-ice surface fluxes
1598         to allow implicit computation of land & sea-ice surface temp.
1599      b) add snow precipitation.
1600    checkpoint52l_pre
1601    
1602    o fix problem (when 1 tile is empty) in min/max monitor.
1603    o fix bug in timeAve (u,vZetatave in common block)
1604    o no restoring terms under ice for pkg/seaice
1605    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1606    o bug fix for pkg/seaice pickups
1607    o change MNC call locations and add coordinate attributes
1608    o mask vorticity at the corner ; affects global_ocean.cs output
1609    o fix ini_curvilinear_grid ; test CS experiments with mpi
1610    o aim.5l_cs: modify sea-ice fraction input file ; update output
1611    o exf: Adding simple range check routine for exf fields after read
1612    
1613    checkpoint52k_post
1614    o removed top-level directory "diags"
1615      - we migrated these functions to pkg/timeave a long time ago
1616    o fixed bug introduced in pkg/monitor
1617    o accuracy ctrlprec = 32 insuffient for gradient checks using
1618      averaged fields (I/O via cost_averages)
1619      -> use ctrl.h in active_file*.F to control I/O precision.
1620    o paramter list of CALL ADTHE_MAIN_LOOP
1621    o added initial do_the_model_io to ecco
1622    o set all ...Freq to zero after cost_final
1623      taveFreq, dumpFreq, pChkptFreq
1624    o MAIN and ECCO differentiability restored
1625    
1626    checkpoint52j_post
1627    o fix nchklev in tamc.h for global_ocean...
1628    o Bringing flow and store directives up-to-date
1629    o Really weird thing!
1630      call do_the_model_io from the_main_loop with parameters
1631      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1632      TAF places a faulty re-call of initialise_varia
1633      after cost_final call which should not be there!
1634    checkpoint52j_pre
1635    
1636    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1637      error messages
1638    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1639    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1640      debug output
1641    o modfied mdsio_writefield.F to handle non-global files under exch2
1642    o update AIM Cubed-Sphere exp (aim.5l_cs):
1643      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1644    o update AIM Equatorial Channel exp:
1645      use standard aim_v23 pkg and change the SST fields to be more realistic.
1646    o globalFile now works with exch2
1647    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1648      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1649    o limit timeave output for hi-res integrations
1650    
1651    checkpoint52i_post
1652    o removed CPP_EEOPTIONS.h from verification/*/code
1653    o updated the tiling for global_ocean_pressure
1654    checkpoint52i_pre
1655    
1656    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1657      the old pkg/aim).
1658    
1659    checkpoint52h_pre
1660    o shortened offending lines in exch2_send_rx?.template
1661    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1662    o genmake2: add build & execute test for NetCDF code
1663    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1664      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1665    o added useSingleCPUIO flag to monitor.F and mon_out.F
1666    o added temporary hack for sea-ice dynamics on the cube:
1667      metric terms are ignored and it is assumed that
1668      there is no sea-ice on cube faces 1, 2, 4, and 5.
1669    
1670    checkpoint52f_post
1671    o added exch2 cube routines to pkg/exch2
1672    o modified hs94.cs-32x32x5 to use it
1673    o added new grid files to hs94.cs-32x32x5
1674    checkpoint52f_pre
1675    
1676    checkpoint52e_post
1677    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1678      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1679    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1680      to work with implicit vertical advection and AB ;
1681    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1682    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1683     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1684    checkpoint52e_pre
1685    
1686    o fix bug in impldiff when Nr=1 or Nr=2.
1687    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1688    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1689    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1690      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1691    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1692    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1693    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1694    
1695    checkpoint52d_post
1696    o re-tiled many expts to allow comparison in multi-processor mode
1697      - updated output accordingly
1698      - changed hs94.128x64x5 to use intial T from file rather than use the
1699        random number generator
1700    o add infrastructure in model routines for fizhi and gridalt packages
1701    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1702    o changes to permit hi-res, cubed-sphere, configuration
1703      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1704      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1705      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1706        of surface winds for the cube
1707      (A verification experiment, based on global_ocean.cs32x15, but with
1708       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1709       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1710       complete with example surface forcing files and matlab scripts to look
1711       at the output and compare it with that of global_ocean.cs32x15.)
1712    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1713       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1714       to conform to the common rule.
1715    o check-in the first version of the coupler + interfaces for multi-components
1716       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1717       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1718       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1719       - ocean and atmos. share the same horizontal grid (no interpolation).
1720       - exchanges between component and coupler is done in forward_step
1721    o new verification experiment, cpl_aim+ocn:
1722       coupled ocean - AIM atmosphere on cs32 grid.
1723    
1724    checkpoint52d_pre
1725    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1726    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1727    
1728    checkpoint52c_post
1729    o Fixing OPTIONS files for use of exf:
1730      - ALLOW_ECCO not needed
1731      - ECCO_CPPOPTIONS.h should not be included from
1732        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1733        as has been the case in the past
1734      - All cal/exf related options are currently set in
1735        single header file. Should remain so until we
1736        agree on a consistent new policy.
1737    o Removed all CPP options for cal package.
1738      cal has no more CPP options.
1739    o modified STOREs in GAD_ADVECTION
1740    o corrected key comp. for passkey
1741    
1742    checkpoint52b_post
1743    o new version: "thsice" of thermodynamic sea-ice pkg:
1744     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1745     - modify fluxes but do not change theta directly;
1746     - light cleaning of bulk_force pkg (still needed with thsice).
1747     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1748       + output_thsice.txt to test thsice & bulk_force pkgs.
1749    o put back grid & coriolis monitor output.
1750    checkpoint52b_pre
1751    
1752    o call "do_the_model_io" at the beginning (=> dump initial state)
1753    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1754    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1755      (need info on NUMBER_OF_PTRACERS)
1756    o missing PTRACERS headers in some routines
1757    o default tamc.h in pkg/autodiff supposed to crash
1758      to ensure proper customization
1759    
1760    checkpoint52a_post
1761    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1762      - moved surfaceTendencyTice from pkg/seaice to main code
1763      - subroutine FREEZE_SURFACE now limits only surface temperature
1764        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1765        => new output.txt for global_ocean.cs32x15 & global_with_exf
1766      - keep the old version of FREEZE for backward compatibility;
1767        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1768      - corresponding modifs for TAF directives
1769    o added surface flux output variables to TIMEAVE_STATVARS
1770    o time-averaged output for pkg/ptracers
1771    o fix problem with ECCO-related divided adjoint
1772      snapshot file was missing some ad-variables,
1773      but no warning issued by TAF
1774    
1775    checkpoint52a_pre
1776    o some bug fixes for #undef REAL4_IS_SLOW
1777    
1778    checkpoint52 = ecco_c52_e35
1779    o after testing adjoints of checkpoint51u_post
1780    
1781    checkpoint51u_post
1782    o this is the post-merge tag of the ecco-branch
1783      (needs another clean checkout and re-testing)
1784    o various natl_box_adjoint configs and results
1785      but no input fields
1786    o obcs adjoint not yet merged!
1787    o adding ECCO global 1x1 and 2x2 degree configs
1788    o updated/extended some store directives for seaice
1789    o pkg/ecco now containes ecco-specific part of cost function
1790    o top level routines the_main_loop, forward_step
1791      supersede those in model/src/
1792      previous input data.cost now in data.ecco
1793      (new namelist ecco_cost_nml)
1794    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1795    
1796    checkpoint51t_post
1797    o this is the pre-merge tag of the ecco-branch
1798    
1799    checkpoint51s_post
1800    o cleanup: removed various obsolete #define-s
1801    o pkg/grdchk
1802      - renamed 'ph-grd 3' to 'grad-res'
1803      - merged from ecco-branch
1804        (remaining bug fixes for obcs gradient checks)
1805      - additional high-precision output for testreport
1806        (grep for 'precision_grdchk_result')
1807    
1808    checkpoint51r_post
1809    o cleaned up or removed CPP_OPTIONS.h files
1810    o updated results for some of the tests to reflect the new
1811      optfiles (-ieee: -O0 instead of -O3)
1812    
1813    checkpoint51q_post
1814    o cd_code:
1815      - moved cd_scheme.F -> cd_code_scheme.F
1816      - separate read_checkpoint from cd_code_ini_vars.F
1817      - separated cd_code part from write_checkpoint
1818      - updated AD_SOURCE, generated .flow
1819      - added CD_CODE_VARS.h to the_main_loop
1820      - Moving cd_code specific store dir.s to pkg/cd_code
1821    o ctrl package totally restructured
1822      - pack/unpack now optional and decoupled from
1823        xx_/adxx_ I/O
1824      - ctrl_pack/unpack cleaned
1825        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1826      - confined inclusion of AD_CONFIG.h to where necessary.
1827    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1828    
1829    checkpoint51p_post
1830    o create initial cd_code package
1831      - WARNING: the initialization of fields within packages
1832        is broken because INI_FIELDS (where READ_CHECKPOINT is
1833        called) is called *before* PACKAGES_INIT_VARIABLES.
1834        This seems to be backwards since
1835        1) its important to initially zero the entire field including
1836           the "halo" region
1837        2) zeroing needs to be done *before* reading pickup info
1838           and the pickup call might or might not happen in any
1839           particular run
1840      - this needs an overhaul for R2
1841    o cleanup verification/*/code/GMREDI_OPTIONS.h
1842    o cleanup testreport
1843    
1844    checkpoint51o_post
1845    o bringing AD-related verif's up to date with genmake2
1846      - carbon/
1847      - global_ocean.90x40x15/
1848      - hs.94.1x64x5/
1849      - (front_relax/ )
1850    o (more) consistent directory structure for AD-related verif.'s
1851    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1852    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1853    o bug fix in find_alpha.F for MDJWF:
1854      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1855        change rho -> rho-rhoConst
1856      - replace call find_rho to find_rhonum
1857    o initialisation of rFlx extended to full array (required by TAF)
1858      and shifted to thermodynamics
1859    o removed PTRACERS.h in ptracers routine
1860    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1861    o Correcting initialisations for fVerU, fVerV.
1862    o helping TAF to recognize dependency on kUp for
1863      fVerU, fVerV
1864    o Replacing delZ by delR in pkg/ctrl/
1865    checkpoint51o_pre
1866    
1867    o undid all of cp51 pending some cleanups and discussion
1868    o added the [#include "AD_CONFIG.h"] statement to all files that need
1869       it for adjoint/tl #defines
1870     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1871     o removed tools/genmake since it no longer works
1872    
1873    checkpoint51n_post
1874    o modifications to make FREEZE flux visible to pkg/kpp
1875      - moved surfaceTendencyTice from pkg/seaice to main code
1876      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1877      - subroutine FREEZE now limits only surface temperature
1878        (this means new output.txt for global_ocean.90x40x15,
1879         global_ocean.cs32x15, and global_with_exf)
1880    o added surface flux output variables to TIMEAVE_STATVARS
1881    
1882    checkpoint51n_pre
1883    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1884    o added [#include "AD_CONFIG.h"] to all files that use the following
1885      defines:
1886      - ALLOW_ADJOINT_RUN
1887      - ALLOW_TANGENTLINEAR_RUN
1888      - ALLOW_ECCO_OPTIMIZATION
1889    
1890    checkpoint51m_post
1891    o incorporating changes to get TAMC/TAF working in genmake2
1892      - added new TAMC/TAF targets to the Makefile
1893      - various cleanups related to package handling
1894      - these changes should have no impact on the forward model
1895    
1896    checkpoint51l_post
1897    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1898     - faster algorithm for cal_addtime.F
1899     - higher precision arithmetic, where needed
1900     - pkg/exf *startdate variables changed from calendar date to
1901       model integration time
1902    
1903    checkpoint51l_pre
1904    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1905    o enable to apply restoring on S & T only in a latitude band.
1906    o update output (external_forcing_surf modif. change truncation errors)
1907       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1908    
1909    checkpoint51k_post
1910    o change default to: useNHMTerms=.FALSE.
1911     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1912       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1913     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1914        exp1, ideal_2D_oce
1915     - change data file of oceanic exp (leave the results unchanged for now)
1916       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1917    o set gravitySign automatically according to the vertical coordinate used
1918      (and change sign: back to "logical" value: +1 when R increases downward)
1919    o added an include barrier to the default CPP_OPTIONS.h and
1920      removed the #include "PACKAGES_CONFIG.h" from it
1921    o fix a bug in mom_fluxform (from chk51j_post)
1922    
1923    checkpoint51j_post
1924    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1925    o adjusted some flow directives (dynamics, thermodynamics)
1926    o added cubed-sphere case to test cost function
1927    o heckpoint_lev?_directives.h now include
1928      pkg-specific directives, whenever those are enabled.
1929    o Moving pkg-specific flow directives to corresponding pkg
1930      Moving pkg-specific differentiation list to corresponding pkg
1931      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1932      ---> conventions are
1933           - pkg_ad.flow
1934           - pkg_ad_diff.list
1935           - pkg_ad_check_lev?_dir.h
1936    
1937    checkpoint51i_post
1938    o merge of the branch-genmake2
1939      - knowingly breaks the older genmake
1940      - automatic generation of all ALLOW_${PKG_NAME} defines
1941      - new testreport supersedes older testscript
1942    o large number of package inclusion and header cleanups
1943    checkpoint51i_pre
1944    
1945    o new output for adjoin of global ocean vector invariant
1946    o fix for checkpoint of thermodynamic seaice and bulk_force
1947    o Steph gchem various cleanups
1948    
1949    checkpoint 51h_pre
1950    o fixed some single quotes
1951    o modify gchem pkg to be more versatile
1952    o modifications to clean up dic pkg
1953    o add pkg/cfc
1954    
1955    checkpoint51g_post
1956    o provide links for ARPACK and ADM*TLM
1957    o start removing verification/vero/
1958    o update AD-related stuff
1959      (in particular some IF-statements in model/src/ routines)
1960    o adding to verification/global_ocean.90x40x15/ adjoint of
1961      vector invariant setup
1962    
1963    checkpoint51f_post
1964    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1965    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1966      of tracer Green's fucntions for ocean inversion project.
1967    
1968    checkpoint51f_pre
1969    o Added on-the-fly spatial interpolation capability
1970        "USE_EXF_INTERPOLATION" to pkg/exf.
1971      - This is a temporary Cartesian-grid hack until
1972        the super-duper ESMF coupler becomes available.
1973      - See verification/global_with_exf/README for usage example.
1974      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1975        flags and modified pkg/seaice accordingly.
1976    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1977        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1978        non-local transport term.
1979    
1980    checkpoint51e_post
1981    o pkg/mom_vecinv:
1982      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1983      - add time-ave diagnostic of vorticity advection.
1984    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1985    o atmospheric geopotential: - include water vapor effect;
1986                                - use p^kappa in p* scaling.
1987    o land pkg: read initial state from files.
1988    o AIM : add stratospheric drag in the upper level
1989    
1990    checkpoint51d_post
1991    o change function ILNBLNK (=> last non-blank char.) to return zero
1992      (instead of the string length) when the string. char is empty
1993    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1994    o modif's to restore TAMC compatibility
1995      - avoid "_d" constructs in PARAMETER declarations
1996      - avoid interrupting lines by comment lines
1997    o Use cluster local disks for purely local I/O
1998      vs. globally visible disks needed for ctrl stuff
1999      (merged from ecco-branch)
2000      - new active_file_loc... and mdsio_..._loc routines
2001      - affected packages: autodiff, ctrl, grdchk, mdsio
2002    
2003    checkpoint51c_post
2004    o introducing integer flag debugLevel
2005      - debLevZero: suppress all output
2006      - debLevA: standard
2007      - debLevB: equivalent to current debugMode=.TRUE.
2008    o introducing pathname variable mdsioLocalDir for mdsio
2009      that can be specified at runtime
2010      (relevant for cluster I/O to local disk)
2011    `
2012    >>>checkpoint51b_post
2013    adjoint of ptracers
2014    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2015    o extended state in checkpoint_lev?, etc.
2016    o alternative ctrl/cost with tr1 or ptracer
2017    o new comlev1_bibj_ptracers
2018    o new ptracers.flow
2019    o made ptracers_forcing same as external_forcing_s
2020    o added verification for adjoint with ptracers
2021      - adm. grdchk fail so far
2022      - tlm. grdchk OK
2023      - checked tapelev/comlev recomputations: OK
2024    <<<checkpoint51b_pre
2025    
2026    checkpoint51a_post
2027    o added code for biogeochemistry package
2028      - new pkgs: dic, gchem
2029      - new subroutine in ptracers
2030    o modify code for biogeo packages
2031      - in model/src and pkg/ptracers
2032    
2033    checkpoint51
2034    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2035      - autodiff, ctrl, exf, grdchk, seaice
2036      kept separate packages
2037      - cost, ecco, obcs
2038    o updating verification/internal_wave, verification/lab_sea
2039      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2040    
2041    checkpoint50i_post
2042    o Preparing next differentiable checkpoint and sync
2043      of MAIN vs. ecco-branch
2044      - 1st step: this one is differentiable
2045      - 2nd step: next(! not this) checkpoint will have updated packages
2046                  from ecco-branch)
2047    
2048    checkpoint50h_post
2049    o new package "land": provide surface BC for AIM.
2050    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2051    o AIM: use true log-P extrapolation for near surface temp (= as in
2052        F.Molteni paper) ; update aim.5l_cs output.
2053    o New variable in PARM03 for more flexible pickups
2054    o somewhat cleaned package initialisation sequence for
2055      ctrl/ cost/ ecco/ in packages_... routines
2056    
2057    checkpoint50g_post
2058    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2059      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2060      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2061        made the default because of faster convergence than ADI
2062    
2063    checkpoint50f_post
2064    o exf totally restructured
2065      - replaced all exf_set_ routines by one generic exf_set_gen.F
2066        and made sure it's still differentiable
2067      - split exf_getffields.F into new exf_bulkformulae.F
2068      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2069      - updated adjoint/makefile and relevant verif. accordingly
2070    
2071    checkpoint50f_pre
2072     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2073          + change Evap over land. (update aim.5l_cs output)
2074     o added missing .cvsignores and made uniform across expts
2075     o changed configuration of tidal_basin_2d expt
2076     o added pkg/debug functions for tracing code in fatal crashes
2077     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2078     o new fn in pkg/monitor to stop model if solution grows too big
2079     o removed lots of single quotes from comments
2080    
2081    checkpoint50e_post
2082    o make KPP work with PTRACERS
2083     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2084       nearly a copy of kpp_transport_s
2085     - there is no analogue to SurfaceTendencyS, so I have to use
2086       gPtr(of the surface layer) instead
2087    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2088    checkpoint50e_pre
2089    
2090    checkpoint50d_post
2091    o change kpp output from multiple-record state files to single-record state
2092      files analogous to write_state.F
2093    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2094      analogous to the cg2d-related output.
2095    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2096      so that writing to internal file fn (with length 512) fails.
2097    checkpoint50d_pre
2098    
2099    checkpoint50c_post
2100    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2101    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2102    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2103    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2104    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2105    
2106    checkpoint50c_pre
2107    Merging from release1_p13:
2108    o bug fix for pkg/seaice dynamic solver
2109    o Added SEAICE_initialHEFF to pkg/seaice
2110    
2111    checkpoint50b_post
2112    o store u*,v* in gU,V instead of in guNm1,gvNm1
2113    o in order to put the momForcing out of the Adams-Bashforth:
2114      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2115      to timestep.F
2116    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2117    o re-generate output for highly sensitive test-exp:
2118       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2119    
2120    checkpoint50b_pre
2121    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2122    o corrected CPP option mismatch in exf_Bulk... functions for case
2123      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2124    
2125    checkpoint50a_post
2126    o Bug fix for merging between c50 and KPP.
2127      ikey was passed from thermodynamics to kpp_calc via
2128      common block rather than being recomputed in kpp_calc,
2129      in contradiction with new key itdkey.
2130      New key ikppkey created, and tamc.h headers updated.
2131    
2132    checkpoint50
2133    - 2nd step of merge with ecco-branch:
2134      merge changes in ecco-branch back into main trunk
2135    - bug fix in find_alpha
2136    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2137    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2138    - merged some sliced AD support routines
2139    
2140    checkpoint49
2141    merged from ecco-branch:
2142    o exf:
2143      - Enable initialisation of forcing fields to constant
2144        (runtime) values.
2145      - in exf_getffields.F
2146        Reduce i-/j-loop to interior domain, discarding overlaps.
2147        That also fixes wrong TAF-key computations for key_1, key_2
2148        with bulf formulae.
2149      - exf_init.F modify #ifdef for exf_init_evap
2150      - exf_getffieldrec.F, ctrl_getrec.F
2151        The following INT-usages are not safe:
2152          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2153          fldcount = int(fldsecs/fldperiod) + 1
2154        and were modified.
2155    o autodiff: checkpoint_lev...
2156      - updated storing for bulk formulae (some arrays were missing)
2157      - added state for seaice package
2158      - synchronized with main branch
2159    o DIVA:
2160      Modif.s in
2161      - the_main_loop.F
2162      - the_model_main.F
2163      and added cost_final_restore.F cost_final_store.F
2164      o With these changes, it is possible to fully separate
2165        the first forward run to compute the cost function (mdthe_main_loop)
2166        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2167        into separate model executions.
2168        This enables better tuning of DIVA to given queue sizes.
2169      o Loss of cost function value in consecutive DIVA runs is
2170        fixed by storing to 'costfinal' file.
2171      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2172        beginning/end of adjoint integration is accounted for.
2173      The current changes apply to TAF-1.4.26.
2174      TAF has one remaining bug, requiring one manual change
2175      (see MITgcm manual).
2176    o cal: synchronized between MAIN and ecco-branch
2177    
2178    checkpoint48i_post
2179    o Changes to restore differentiability of code w.r.t. previous tag
2180      (mostly adding new routines to make list and replacing
2181      pressure by totPhiHyd).
2182    o Updated and merged grdchk package
2183      - has both ADM and TLM checks
2184      - works for single- and multi-proc.
2185      - output cleaned
2186      - worked successfully for parallel DIVA
2187    o genmake:
2188      - Adding -platform=SP4
2189      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2190    o Modif. for DIVA:
2191      ctrl_unpack should not be called in intermediate DIVA interval.
2192      (similar thing would apply for active files such as
2193      tbar, sbar, psbar, which should not be reinitialised;
2194      only relevant for ecco-branch)
2195    
2196    checkpoint48h_post
2197    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2198    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2199    o Added SEAICE_initialHEFF to pkg/seaice
2200    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2201    
2202    checkpoint48g_post
2203    --- EOS:
2204    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2205      store total Potential in totPhyHyd for diagnostics & EOS.
2206    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2207    --- Pressure/geopotential gradient:
2208    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2209    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2210      ( changes results of global_ocean_pressure )
2211    o NLFS + z-coord.: add eta*Rho' contribution.
2212    o accurate phiHyd when using interface-W at the middle between 2 centers
2213     ( changes results of ideal_2D_oce )
2214    o includes r* 2nd term in potential gradient.
2215    
2216    checkpoint48f_post
2217    Merging from release1_p12:
2218    o Modifications for using pkg/exf with pkg/seaice
2219      - improved description of the various forcing configurations
2220      - added basic radiation bulk formulae to pkg/exf
2221      - units/sign fix for evap computation in exf_getffields.F
2222      - updated verification/global_with_exf/results/output.txt
2223    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2224      (SBO) core products, including oceanic mass, center-of-mass,
2225      angular, and bottom pressure (see pkg/sbo/README.sbo).
2226    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2227      to avoid negative values in shallow regions.
2228      - updated verification/natl_box/results/output.txt
2229      - updated verification/lab_sea/results/output.txt
2230    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2231    o Added useSingleCpuIO option (see PARAMS.h).
2232    o Updated useSingleCpuIO option in mdsio_writefield.F to
2233      work with multi-field files, e.g., for single-file pickup.
2234    o pkg/seaice:
2235      - bug fix in growth.F: QNET for no shortwave case
2236      - added HeffFile for specifying initial sea-ice thickness
2237      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2238    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2239      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2240    o pkg/seaice:
2241      - adjoint-friendly modifications
2242      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2243    
2244    checkpoint48e_post
2245    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2246    o dynamics: change definition of computational domain & adapt mom_fluxform
2247      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2248    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2249        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2250        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2251        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2252        inverted_barometer solid-body.cs-32x32x1
2253      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2254    
2255    checkpoint48d_post
2256    o in preparation for r*:
2257     a) use pre-computed gradient of hydrostatic potential:
2258        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2259     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2260        => affects results of glob_oce_pressure (different truncation error)  
2261      update output.txt of ideal_2D_oce & global_ocean_pressure
2262    
2263    checkpoint48d_pre
2264    o in preparation for r*:
2265      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2266      pass the 2 comp. of the grad. as arguments to momentum S/R.
2267      but for the moment, only used if it does not change the results.
2268    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2269    
2270    checkpoint48c_post
2271    Modifications in treatment of initial flux forcing controls
2272    to avoid extra storing of flux fields.
2273    
2274    checkpoint48c_pre
2275    o Added tidal_basin_2d experiment (currently 1D!)
2276    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2277    
2278    checkpoint48b_post
2279    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2280     (modification to pressure gradient not yet implemented)
2281    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2282      (for U & V) that are used for vertical advection of momentum.
2283    
2284    checkpoint48a_post
2285    o In preparation for r*, use temp. array to compute vertical transport
2286       in flux-form momentum pkg. => change results of few test-exp.
2287      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2288                        lab_sea, natl_box & plume_on_slope
2289    
2290  checkpoint48  checkpoint48
2291  o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')  o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2292    

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