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revision 1.14 by cnh, Tue Sep 29 18:57:53 1998 UTC revision 1.799 by dimitri, Mon Apr 23 21:09:19 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/kpp: replaced _KPP_RL with _RL
8    o bug fixes for vertical diffusivity computations when both KPP and
9        3D diffusivity arrays are used.
10    o pkg/seaice: fix bug in evp solver, while doing that
11      - change (improve?) discretization of stress computations for both
12        cgrid-lsr and evp solver
13      - add a new routine to compute strain rates
14      - the above changes lab_sea results
15      - add no slip conditions for evp solver (off by default), lsr-version
16        may follow
17      - fix exchange for shear at Z-points (does not change lab_sea)
18      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
19        (to force the user to pick a time step since there is not "safe" way
20        of choosing it)
21      - add principal stress diagnostics
22    o pkg/kpp: add code to have mixing in shelf ice caverns
23    
24    checkpoint59
25    o pkg/exf:
26      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
27        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
28      - move exf header files from lower_case.h to UPPER_CASE.h ;
29        add missing cvs Header & Name
30      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
31      - add namelist param. selectStressGridPosition, exf_monFreq
32      - retire many _CLIM routines, and remove data.exf_clim
33        + params moved to data.exf
34        + climsst, climsss now handled by exf_set_gen, i.e.
35          climss?period=0 refers to constant field,
36          climss?period=-12 to monthly forcing
37      - split up namelists in data.exf
38    o pkg/seaice:
39      - remove seaice_exch and seaice_exch_uv
40      - remove superfluous exchange of theta
41      - add myThid to seaice_budget_ocean/ice
42      - add new interface for atmospheric wind forcing (C-grid only)
43        + new routine
44        + two new field (taux, tauy for stress over ice)
45        + removed one global field (DAIRN) for C-grid case only
46    o pkg/thsise
47      - 2nd set of modifs for thsice adjoint in conjunction with exf
48    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
49    
50    checkpoint58y_post
51    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
52      vertical diffusivity, similar to that in MOM4; turned on using
53      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
54      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
55    o Added capability for 3D specification of background vertical diffusion
56      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
57      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
58      "data" file that contains the 3D vertical diffusivity coefficients.
59    o ice dynamics (pkg/seaice) with thsice thermodynamics:
60      - add code within pkg thsice to advect & diffuse sea-ice fields
61      similar to (and will replace) what has been added in  seaice_advdiff.F,
62      but: - conserving Mass, Heat & Salt.
63           - better when using non-linear advection scheme (not yet fully tested)
64           - can also be used in atmospheric set-up (for now, only the diffusion).
65    
66    checkpoint58x_post
67    o IO option for global-file compact format:
68      - add options when generating topology (utils/exch2/matlab-topology-generator)
69      - add I/O capability (pkg/mdsio).
70      - adapt utils/matlab/rdmds.m to read this format.
71      for now long-line format not yet supported by pkg/mdsio (& exch2).
72    o shelfice: add a few diagnostics
73    
74    checkpoint58w_post
75    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
76      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
77      (and replace horiVertRatio in NH code).
78      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
79                         and tutorial_plume_on_slope (sensitive to truncation)
80    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
81      directly to drive seaice model (C-grid only)
82    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
83     - reintroduce computation of wind from stress,
84     - compute tau (in exf_bulkformulae.F) from windstress averaged to
85       mass points to avoid tau = 0
86     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
87    o rdmnc.m: make it work with "global" files created with gluemnc
88    o rdmnc.m : some improvements in dealing with singleton dimension
89      (tested on all testreport mnc output files).
90    o genmake2: disable pkg/profiles if netcdf test fails.
91    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
92    o move call to cal_readparms up to make calendar parameters/variable available
93      to all packages
94    
95    checkpoint58v_post
96    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
97      useDynP_inEos_Zc tested.
98    o pkg/exf: changes to properly interpolate/mask/scale initial fields
99    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
100      and portions thereof.  See read_cs.txt for description and examples.
101    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
102      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
103      following the great-circle arc between those 2 points.
104    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
105      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
106    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
107     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
108     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
109     - still needs work (not working with some options ; efficiency to improve)
110       and serious testing.
111     - use this scheme for temperature & salinity in 2 advection test exp.:
112       advect_xy & advect_xz, respectively.
113    
114    checkpoint58u_post
115    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
116    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
117    o testreport: add option "-skipdir" to skip some test.
118    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
119      momentum calculation.
120    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
121    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
122      remove checkpoint.F and the_correction_step.F (no longer used);
123      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
124    o add option (linFSConserveTr) to correct for tracer source/sink due to
125      Linear Free surface
126    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
127    o pkg/thsice: fix reading mnc-pickups
128    
129    checkpoint58t_post
130    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
131    o pkg/mdsio:
132     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
133       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
134       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
135     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
136     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
137       either MDS_READ_FIELD or MDS_WRITE_FIELD )
138     - new S/R (to replace MDSWRITEMETA), which allows to write more
139       informations (variable names, time ...) to meta files.
140     - modify rdmds.m to give back the meta file content.
141    o pkg/diagnostics: change vertical interpolation to be safer, and more
142       flexible (define p-levels to interpolate to in data.diagnostics);
143      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
144       diagnostic pointer.
145    o pkg/seaice: more cleaning up of seaice_growth, added many comments
146    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
147    o fix multi-category seaice:
148     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
149       SEAICE_MULTICATEGORY
150     - fix short wave heat flux
151    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
152       and allow to use EVP solver. Change forward lab_sea: test both EVP
153       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
154    o Initial check-in of lab_sea adjoint
155      (very similar to natl_box_adjoint/code_seaice)
156      * used C-grid and EVP solver
157      * used KPP, GM/Redi
158      * uses inAdExact=.TRUE.
159      * gradient checks fail for both ADM and TLM
160        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
161        f.d. gradients actually seem more problematic than ADM, TLM gradients;
162        issue is related to forward mismatch between g77 an ifort
163    o pkg/seaice: overhaul of thermodynamics
164     - growth.F and groatb.F are replaced by new routine seaice_growth.F
165     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
166     - move a few global fields out of SEAICE.h into seaice_growth.F and
167       make them 2D (FICE/QNETO/ ...)
168     - remove FO (it is the same as QNETO)
169     - introduce a few local fields to avoid modifying external fields such
170       as atemp, etc.
171    
172    checkpoint58s_post
173    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
174      changed exf_set_gen.F so that
175        genperiod=0 means input file is one time-constant field and
176        genperiod=-12 means input file contains 12 monthly means
177    o CG2D: use pre-computed solver main-diagonal (stored in common block);
178      this affects truncation error ; generate new output file for exp. which
179      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
180        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
181        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
182        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
183        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
184        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
185    o start implementation of deep-atmosphere and anelastic formulation
186    o verification: remove 2nd copy of input files and use script "prepare_run"
187      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
188    o mom_common/vecinv/fluxform: fix a few initialisation isssues
189    o profiles: fix for multithreaded case
190    
191    o diagnostics: rename few diags:
192      s/'PRESSURE'/'RCENTER '/g
193      s/'TICE    '/'oceFreez'/g
194      s/'TAUX    '/'oceTAUX '/g
195      s/'TAUY    '/'oceTAUY '/g
196      s/'SWFLUX  '/'oceQsw  '/g
197      s/DIFx/DFxE/g
198      s/DIFy/DFyE/g
199      and add few ocean-forcing diagnostics:
200      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
201    o modifications to pkg/seaice/growth.F and budget.F, which change results of
202      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
203      as actual snow thickness.  It now refers everywhere to effective snow
204      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
205    
206    checkpoint58r_post
207    o modifications to pkg/seaice/growth.F, which change results of
208      lab_sea experiment: fixes pertain to melting snow over open water, to
209      masking EVAP under sea ice, and to using the correct AREA variable for
210      computations of EVAP, PRECIP, HSNOW, and GHEFF
211    o add ability to read bathy, salt, and theta using MNC (off by def)
212    o add flooding algorithm and advection of HSNOW for pkg/seaice;
213      both are turned off by default and do no change any results
214    o seaice advection with pkg/thsice: a step toward the use of non-linear
215      advection scheme, but #ifdef or commented out for now (requires more EXCH).
216    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
217      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
218      in natl_box (affects results @ truncation level: update output.txt)
219    o multi-threading and IO:
220      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
221      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
222        (needed to work with SingleCpuIO): tested in all verif. exp.
223    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
224      affects the results (but none of the verification test uses this scheme).
225    o Adding some pkg/diagnostics capability to pkg/seaice
226      (will certainly be subject to changes)
227    o ctrl: adding new control variables:
228      lwflux, lwdown, evap, snowprecip, apressure, runoff
229    
230    checkpoint58q_post
231    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
232      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
233      high_res_cube configuration by 4% on Columbia.
234    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
235      add (in global_with_exf/code) a version of EXF_INTERP_READ without
236      dynamical allocation (seems to work in multi-threaded).
237    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
238      single CPU io) so that TAF does not have to see EESUPPORT.h
239    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
240    
241    checkpoint58p_post
242    o obcs: stop if obcs is used with useCDscheme = .true.
243    o shelfice:
244     - fix a sign error so that no slip at shelfice interface works
245     - remove stop for combination non-hydrostatic code and shelfice. That does
246       not mean, that the results are correct, but at least they are numerically
247       stable
248    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
249    o added adjoint exch routined for all exch*3d* routines
250      and updated flow directives
251    
252    checkpoint58o_post
253    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
254      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
255    o change controling S/R for writing pickup file (new S/R do_write_pickup)
256      and clean-up reading/writing of pickup files.
257    o fix local version of read/write pickup (NH part) in rotating_tank/code
258    o simplify EXCH interface:
259     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
260     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
261    o added the regrid package
262    o shelfice:
263     - add a simple boundary layer scheme to reduce noise
264     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
265    
266    checkpoint58n_post
267    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
268       local variable (not in common block).
269    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
270      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
271      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
272        to work with SingleCpuIO.
273    o add "_d 0" to real constant of pkg/cfc subroutines ;
274       update exp. cfc_exemple & tutorial_cfc_offline output files.
275    o multi-threading and IO:
276      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
277        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
278      - barrier before and after reading.
279      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
280      - avoid using MDS_WRITELOCAL for LAND pkg output.
281      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
282        common-block variables ; Allows multi-threading with master-thread IO.
283    o change default MAX_NO_THREADS from 32 to 4 ;
284      and stop cleanly when MAX_NO_THREADS is too small.
285    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
286    
287    checkpoint58m_post
288    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
289       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
290    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
291       keep global_ocean.90x40x15 (for AD testing) with former secondary test
292       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
293    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
294        add MITgcm_tutorials (= code + all the tutorials)
295    o ecco, option to compute cost for total ssh (mean+anom)
296    o consistent with addition of ptracer and ssh in pkg/profiles
297    o profiles: adding ptracer and ssh
298    o testreport: change multi-test output-file name
299      (from output.txt.{name} to output.{name}.txt)
300    o profiles: now ok for mutli-tiles case
301    o seaice: add 4 parameters for different advection schemes for area,
302      (effective) seaice thickness, enthalphy, and snow height. Their default
303      is the standard parameter SEAICEadvScheme
304    o calc_gw:
305     - add cosFacU in zonal viscous flux (harmonic.visc.).
306     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
307       of tutorial_plume_on_slope.
308    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
309    o calc_gw: true flux-form, account for horizontal grid spacing.
310      update rotating_tank results, but not plume_on_slope (affected at
311      truncation level, 11 digits).
312    
313    checkpoint58l_post
314    o calc_gw:
315     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
316     - remove side-drag for now (need to fix it); update plume_on_slope results.
317     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
318    o commit code to make SST/SSS weights spatially variable
319      (based on either variable in-situ or variable initial T/S weights)
320    o pkg/ecco:
321      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
322        now based on horizontally varying weights wthetaLev, wsaltLev
323      * cost_averagesflags now returns year indices in addition to day, month
324      * sflux balance is performed on annual basis
325        (sflxumm, sfluxmm2, bal_sfluxmm)
326      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
327        including separate counting and multipliers
328    o pkg/rbcs
329      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
330    
331    checkpoint58k_post
332    o testreport:
333     - always build in dir. "build" (if not there, mkdir build instead of building
334       & running in input)
335     - run in dir run (if it exists), in build otherwise.
336     - call prepare_run (if input/prepare_run exists)
337     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
338    o pkg/exf modifications to interpolation and rotation routines for more
339       reasonable treatment of North Pole singularity: for tracers North Pole
340       value is set to northernmost zonal-mean value, for zonal velocity it is
341       set to zero, and for meridional velocity it is set to northernmost value.
342    o pkg/exf/exf_check_range.F
343     - add tile index to diagnostics and move stop statement to the very
344       end of the routine.
345    o pkg/diagnostics: (diagnostics_main_init.F)
346      define title of isomorphic variables according to the current config.
347    o pkg/thsice with pkg/seaice dynamics:
348    - fix domain of computation (interior only, required for exf) and do exchanges
349    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
350    o towards a standard way of dealing with multi-threading in MONITOR
351      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
352    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
353       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
354    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
355    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
356    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
357       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
358    o tracer advection:
359     - clean-up and simplify calc_common_factors.F
360     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
361       advection subroutine (but still not used within DST advection S/R)
362    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
363    
364    checkpoint58j_post
365    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
366      from file (collects calls previously in FORWARD_STEP)
367    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
368    o adjoint store dir. adjusted accordingly
369    o genmake2
370      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
371    
372    checkpoint58i_post
373    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
374      on wind stress (SEAICEstressFactor defaults to 1.)
375    o Total number of Timers is finite (<=40): comment out 2 non-essential one
376      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
377    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
378      on CS-grid: no longer loosing mass.
379    o exf & curvilinear-grid: no longer modify longitude xC & xG.
380    o pkg/ggl90: fix sloppy output and fix a bug
381    o pkg/seaice: added SEAICEuseEVPpickup parameter
382      - Set to false in order to start EVP solver with
383        non-EVP pickup files when using SEAICEuseEVP
384      - fix sign error in diffusion in seaice_calc_rhs
385    
386    checkpoint58h_post
387    * Modifications for bottom topography control
388      o replace hFacC by _hFacC at various places
389      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
390      o add non-self-adjoint cg2d_nsa
391      o update autodiff support routines
392      o re-initialise hfac after ctrl_depth_ini
393      o works for 5x5 box, doesnt work for global_ocean.90x40x15
394    * Adding verification for 5x5 box (4-layer) bottom topography control
395    
396    checkpoint58g_post
397    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
398       used for mean seasonal cycle, mean diurnal cycle); add an example
399       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
400    o pkg/ggl90:
401      - add parameter (minimum surface kinetic energy)
402      - fix bug (avoiding division by zero)
403    o couple pkg/thsice to pkg/seaice:
404      - modify advection in seaice to accomodate new scalar fields to be advected
405      - only muliDimAdection scheme work with seaice/thsice
406      - mapping of thsice-variables to seaice-variables, back and forth
407      - does not break the verification experiments, but does not give the
408        desired results either
409    o pkg/seaice
410      - make (default) second order advection a bit less confusing?
411    
412    checkpoint58f_post
413    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
414      to pkg/seaice):
415      - new routines thsice_map_exf and thsice_get_exf provide the interface
416      - add an additional formal parameter to thsice_solve4temp
417    o pkg/exf:
418      - add new fields wspeed, snowprecip (to be able to couple to thsice)
419      - correct Stefan-Boltzmann constant
420      - new parameter for longwave surface emittance
421      - separate some stuff from exf_bulkformulae into new routines  
422        exf_radiation, exf_wind
423      - add new parameters and constants: longwave emissivity for ocean, ice
424        and snow, evaporation parameters over ice
425      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
426        either wind from stress or stress from wind
427    o pkg/thSIce:
428    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
429    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
430       and THSICE_CALC_THICKN
431    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
432    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
433      to make debugging easier.
434    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
435    o pkg/bulk_force:
436      - clean-up comments and parameters ;
437      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
438    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
439      generate new output for test-experiment: aim.5l_cs.thSI
440    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
441      testreport accordingly
442    
443    checkpoint58e_post
444    o SEAICE_CGRID adjoint done
445    o R_STAR adjoint implemented.
446      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
447      * need to sort out init. of h0facc, etc.
448    o Make pkg/profile fully independent of ecco,cost, etc. stuff
449      to be able to use it in pure forward.
450    
451    checkpoint58d_post
452    o upgrade simple test-experiment to tutorial example:
453     step.1: duplicate the experiment and (step.2) will remove the old copy.
454      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
455      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
456      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
457      tutorial_global_oce_biogeo    <- copy of dic_example
458      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
459      tutorial_plume_on_slope       <- copy of plume_on_slope
460      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
461      tutorial_global_oce_optim     <- empty for now (David ?)
462      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
463     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
464    o correct a sign problem in cost_scat.F
465    o obcs and ptracers: fix boundary conditions for advections schemes
466      with larger stencil
467    o thsice adjoint: start
468    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
469      completeness
470    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
471      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
472    o ptracers adjoint:
473      * avoid extensive recomputatations
474      * fix missing re-init. of gptr (missed by TAF)
475    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
476      me to turn off the excessive output to STDOUT that this package produces
477    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
478      and add those terms in Vector-Invariant formulation.
479    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
480      if the control period (xx_hfluxperiod etc) is 0
481    o in profiles pkg, clean routines and fix details
482    o in ecco pkg, reading ssh data:
483      fix problem in case the model does not start at iter0=0
484    o fix mnc-pickup/restart for ptracers
485    o new package prifiles:
486      code to compute profile-based cost by Gael Forget
487      (modifs in ecco, ctrl, autodiff)
488    o Benign bug fix in initialization (spotted by M. Mazloff) of
489      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
490    
491    checkpoint58c_post
492    o adjoint: finish NLFS adjoint and provide reference output in
493      verification/global_ocean.90x40x15/results_ad_nlfs
494    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
495      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
496      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
497      with SEAICE_CGRID defined.
498    o move calendarDumps from "data" to "data.cal" and clean-up the code
499      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
500    o add useEXF & useCAL flags (for now, set in hard-coded way)
501    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
502      (were missing in NH mode, and wrong in quasihydrostatic mode).
503      waiting for Chris updated version of calc_gw to add those CALLs.
504    o fix bug in quasihydrostatic S/R ;
505      add a test for this option: global_ocean.90x40x15.qshyd
506    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
507      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
508    o add on/off flag useOffLine for package OFFLINE
509    o seaice:
510      - modify advection so that it works also on the C-grid
511      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
512        problem in multi-tile runs with C-grid
513      - add flags for clipping ice velocities and/or masking solver forcing
514      - fix drag (ocean on ice) formulation and a bug that caused noise in the
515        C-grid solver
516      - added a few comments to seaice_diffusion.F
517      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
518        are now exclusive)
519      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
520        required re-ordering the code a little:
521       + make DAIRN global variable (defined in SEAICE)
522       + move computation of the viscosities eta and zeta into a new separate
523         routine (because I need to recompute them in seaice_ocean_stress.F)
524    
525    checkpoint58b_post
526    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
527      update output.txt of exp. aim.5l_cs.thSI
528    o various mnc cleanups and improvements:
529      + shrink lookup tables by factor of ~4
530      + better error reporting when running out of lookup space
531      + able to handle longer path/file names (up to 500 chars)
532    o adjoint:
533      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
534      - TBD: "hidden" mom_vecinv recomp. in dynamics
535    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
536     (allow to differentiate between forcing components using new integer flags:
537      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
538     and add new flag to put Dissipation tendency out of Adams-Bashforth.
539    o ecco
540      - enable trend removal from SSH anomaly obs.
541    o adjoint
542      - a fix for PmEpR when #undef EXACT_CONSERV
543      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
544      - try to fix "hidden" recomp. in forward_step for NLFS
545        (NLFS seems broken sometimes after I checked it in)
546    o seaice:
547     - add c-grid version of the dynamic solver:
548       + three new routines that are the c-grid substitute lsr, dynsolver
549         and ostres
550       + put a few fields that were local to dynsolver into global common
551         blocks, so that I can move the computation of stresses etc into
552         seaice_lsr (saves coding but may break the adjoint).
553     - replace more hardwired parameters by runtime parameters
554     - add ice masks that mask the rhs of the implicit solvers where there
555       is no ice (commented out in seaice_dynsolver, because i am not sure
556       if this works properly), eventually this should replace the clipping
557       of ice velocities in seaice_dynsolver to +/-40cm/s.
558    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
559      include it only where its needed
560    o move balancing of fluxes before the call of external_forcing_surf
561    o seaice:
562      - correct units of turning angles (now they are really in degrees)
563      - move computation of GWATX/Y out of main routine into dynsolver
564      - initialize GWATX/Y in seaice_init
565    o Apply mask on Fresh-Water flux (needed for SSH forcing).
566      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
567    o seaice: add runtime flags for turning angles (default to zero)
568    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
569      and trend from exf forcing and ctrl control adjustments
570    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
571      (since checkpoint57x_post)
572    o change the default rotation period to 86164.s = the Earth rotation
573    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
574      and based on a reference stratification. Tested within hs94.cs-32x32x5.
575    o seaice advection: add code for choosing between the default (2nd order
576      central differences) and multiDim advection schemes provided by
577      pkg/generic_advdiff
578    o seaice:
579      - removed all references to SEAICE_GRID.h fields from
580        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
581        (cubed-sphere configuration will change a little)
582      - grid computations in seaice_init are obsolete now.
583      - cleaned up code a little so that is easier to read (hopefully).
584      - added new (better?) discretizations of default advection and diffusion
585        (turn on with SEAICEuseFluxForm)
586      - replace 1 in 3d global fields by kSurface in growth.F
587      
588    checkpoint58a_post
589    o seaice:
590      - bug fix in advect.F
591    o shelfice:
592      - separate shelfice load anomaly from pload (breaks with time
593        dependent forcing), => introduce constant field shelficeLoadAnomaly.
594        Its default is 0., but it may be computed more cleverly from (unknown)
595        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
596        done offline. A good approximation of the pressure load anomaly is
597        necessary to avoid large initial adjustment processes underneath
598        deep-reaching shelfice.
599      - small fix in ISOMIP shelfice_thermodynamics
600      - add more sophisticated thermodynamics of Hellmer (1989), this is
601        now the default
602      - give a few constants more intuitive names
603    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
604      if bulk formulae are used in long integration (especially EmPmR). Turn
605      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
606      if balancePrintMean, the imbalance that is substracted is printed to
607      STDOUT.
608    o fix bug (typo) in obcs_apply_eta.F
609    o add a new package shelfice which enables us to model the circulation
610      underneath shelf-ice with draughts of hundreds of meters.
611     - works
612     - to do: + include improved thermodynamics
613              + check whether kSurfC (from model/inc/SURFACE.h) can be used
614                instead of new field kTopC
615              + can we use topoFile, Ro_surf and existing code in ini_depth.F
616                instead of new field R_shelfIce and new code in ini_depth.F
617                and ini_mask_etc.F?
618              + adjust vertical mixing schemes?
619    o seaice pkg:
620     - add a cpp-flag to include a simple formula for a salinity dependent
621       freezing point of sea water at the surface
622     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
623       meridional stresses are now different (and hopefully correct)
624    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
625       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
626       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
627    o pkg/diagnostics: add options and parameters for regional-statistics
628       diagnostics ; define regions by reading a region-mask from a file
629       (might add other options later)
630    o pkg/bulk_force:
631     - add option and parameters to use AIM surface-flux formulae.
632     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
633       others forcing fields (defined in PARM05, parameter file "data") are loaded
634       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
635     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
636     - use the right EXCH call for uwind,vwind (to work on CS-grid).
637     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
638       and parameters (note: calcWindStress replaces .NOT.readwindstress).
639     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
640    
641    checkpoint58
642    o add "--embed-source" option to genmake2 which, when the supporting
643      tools can be compiled (as determined by genmake2) will turn on the
644      embed_files package which then embeds the entire MITgcm source code
645      (*.[fFhc] + Makefile) used for the build within the executable
646      - requested by CNH but off by default
647      - adds a paltry <9MB to the mitgcmuv executable in most cases
648      - only writes the output when useEMBEDSRC in eedata is true
649    o clean up 3-dim. relaxation codes:
650      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
651      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
652      * Thanks to Tom Haine for testing!
653    
654    checkpoint57z_post
655    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
656      affects output (@ truncation level) of exp. plume_on_slope ; updated.
657    o fix the pickup behavior for obcs in combination with ptracers
658    o fix a bug in ptracers_external_fields_load
659    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
660      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
661    o transfered surface NH pressure to eta field (if exactConserv).
662    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
663         and update lab_sea output.txt file.
664    o completing 3-dim. relaxation code: additional term
665         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
666      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
667      * At compile time, in "EXF_OPTIONS.h" set
668          #define  ALLOW_CLIMTEMP_RELAXATION
669          #define  ALLOW_CLIMSALT_RELAXATION
670      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
671          tauThetaClimRelax3Dim = 15552000.0,
672          tauSaltClimRelax3Dim  = 15552000.0,
673      * 3 cases:
674          1) Use a constant-in-time 3-dim. field
675          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
676          3) Real-time relax. to time-evolving prescribed field
677    o Adding Laplacian-type smoothness constraint on
678      initial and boundary (forcing) controls (ic, bc)
679      * enable at compile-time via
680        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
681      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
682      * Absolute scale somewhat unclear so far
683      * no area weighting was included since no other cost term does so far
684    
685    checkpoint57y_post
686    First step for a NLFS adjoint
687    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
688    o new init. routines for calc_r_star, calc_surf_dr
689    o still need to deal with ini_masks_etc
690    o testreport seemed happy
691    checkpoint57y_pre
692    
693    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
694    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
695    o add new offset feature to offline pkg (plus minor cleanup)
696    o cfc fixes for final year of integration
697    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
698      be in GCHEM_OPTIONS).
699    
700    checkpoint57x_post
701    o fix testreport Pb in multiple test experiment.
702    o cleanup our namelist syntax in verification:
703      - make it more F95 standards compliant (some work still needed)
704      - allows the vast majority of our tests to work with gfortran
705    o Non-Hydrostatic:
706     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
707     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
708    o Allow to apply AB on T,S rather than on AB(gT,gS):
709     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
710     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
711       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
712     - need a "clever" read_pickup to restart from the other AB formulation
713    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
714    o remove some unused variables (reduces number of compiler warnings)
715    o adjoint
716      * Disable useVariableViscosity for adjoint for time being
717        (there are a number of extensive recomputations)
718      * Initialize certain variables needed for adjoint
719    
720    checkpoint57w_post
721    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
722                 fix the singleCpuIO RS version of MDSWRITEFIELD
723       and add a WARNING if using globalFiles=T with multi-processors.
724    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
725      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
726    o tracer advection scheme:
727      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
728       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
729       was not very convenient).
730      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
731       (further tests needed for the implicit DST & Flux-Limiter schemes).
732    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
733      and sRef for convenience, handy, when you want to initialize
734      ptracers in a large domain with a constant non-zero value. Also,
735      untangle ptracers_init.F a little.
736    
737    checkpoint57v_post
738    o change dome exp. to use variable viscosity in side-drag terms.
739    o remove all the files from the cfc_offline test since they are now
740      incorporated into tutorial_cfc_offline which has been producing
741      identical results for a few days of testing
742    o add new parameter: sideDragFactor to enable half-slip-side BC
743      and change side-drag S/R to use viscosity from mom_calc_visc
744      (can switch back by setting sideDragFactor=0.); affects results at
745      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
746       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
747    o vorticity & strain are now computed without masking, to account for
748      no-slip-side BC in variable viscosity calculation ; mask is applied
749      anyway later on, before computing advection/coriolis terms.
750    o modify exp4 to test new obcs support for reading from external files
751      and for passive tracers
752    o fix behavior of ptracers_monitor when monitor output is written to a
753      netcdf-file; still not independent of monitor.F (writes in the same
754      file).
755    o change default value of tRef (put a uniform, meaningful value for ocean
756      & atmos) and initialize sRef (was missing, as Martin mentioned).
757    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
758      to be proportional to enstrophy dissipation length.  Thus,
759       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
760      This is now consistent with Smagorinsky and with the manual.
761    
762    checkpoint57u_post
763    o OBCS and PTRACERS: add open boundary support for passive tracers
764      - either use homogenous (pseudo) v.Neumann conditions or prescribe
765        OB-values from file; this is not different from the way theta and salinity
766        are treated
767      - however, Orlanski-radiation conditions are not supported, and the model
768        will stop if you use pTracers and Orlanski at the same time.
769      - beefed up the rountine obcs_external_fields_load: now only those open
770        boundary values are overwritten with values from files for which there
771        are really files, otherwise the OB-fields remain untouched. This makes
772        it possible to use different OBs at different ends of the domain (as
773        with EXF)
774    o reduce number of exch calls in shap_filt (s2).
775    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
776      truncation level) 4/5 MLAdjust test results (11&12 digits match).
777    
778    checkpoint57t_post
779    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
780    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
781      same truncation, independent of the face number: affects affects several
782      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
783    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
784      note that biharmonic viscosity + no-slip was not tested in any experiment.
785    o fix bug in non-linear free-surf side-drag ; generate new output for
786      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
787    o make mnc honor the writeBinaryPrec flag for most kinds of output
788    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
789    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
790      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
791    o add brackets in multi-terms sum to get same truncation, independent of
792      the face number (manage to get exactly same value of gU,gV at the cs-edge)
793      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
794    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
795      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
796      a maximum grid-scale Reynolds number.  Also, changes all length calculations
797      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
798      Suggested values of viscosity parameters found in mom_calc_visc.
799      Many new viscosity diagnostics available.
800    
801    checkpoint57s_post
802    o Add clearing-house for viscosity calculations, mom_calc_visc and
803      correct numerous bugs in LeithD and Smagorinsky discretizations.  
804      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
805      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
806      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
807      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
808      The Strain-Tension form is now called with useStrainTensonVisc=.true.
809      ViscAhStrain and viscAhTension are now retired.
810    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
811    o In response to JMC's bug report, genmake2 now ignores any soft-links
812      that it finds in the *current* directory when searching for files.
813      Soft-links found in any other source directories will still work as
814      they did before.
815    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
816      a C routine to unlimit the stack size
817    o mnc-ify pkg/aim snapshot vars
818    o mnc-ify pkg/land as requested by Daniel
819    o various changes to mnc including:
820      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
821      - output can now be grouped so that all files within a group
822          change the ITER portion of their names in lock-step together
823      - can now read ("global") PER-FACE (in addition to PER-TILE) files
824          and works with both EXCH1 and EXCH2 (but needs more testing)
825      - writing works for all verification test cases w/ g77 on Linux
826    
827    checkpoint57r_post
828    o make MNC variable initialization happen earlier
829    o add diagnostics for (almost) each term of the momentum Eq.
830    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
831    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
832    o remove MINIMAL_TAVE_OUTPUT option ;
833      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
834    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
835      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
836    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
837    o add time-dependent SST, SSS control
838    o cost terms in ecco/ modularized (new cost_generic.F)
839    o cost_averages routines are modularized (new cost_averagesgeneric.F)
840    o new infrastructure for seaice model vs. obs misfits in seaice/
841      * driver from the_main_loop.F is seaice_cost_driver.F
842      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
843      * gradient check in Exp. 6a of natl_box_adjoint/
844    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
845      (see README file)
846    
847    checkpoint57q_post
848    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
849    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
850      - bug was reported by Jean-Michel and Ian Fenty
851    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
852      update exp. cpl_aim+ocn output.
853    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
854      Needed for high-res. runs with large global files
855      to be able to limit tapelev size
856    o Changed some tests for adjoint:
857      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
858      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
859      * global_ocean.90x40x15/ back to default 3-level checkpointing
860    o Modifications to enable scripted COMMON to MODULE conversion
861      * verification/OpenAD/code/ has necessary scripts and description;
862      * converts, compiles and runs successfully;
863    
864    checkpoint57p_post
865    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
866    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
867      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
868    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
869    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
870      (was already the case for dissipation with mom_vecinv,
871       and also the case for grad.PhiHyd when staggered-timeStep)
872      This will allow to put dissipation out-off the AB time-stepping.
873     Unfortunately, affects truncation error. Update output of exp. that "fails"
874      (cg2d matching number) and leave the others for later: front_relax(10),
875      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
876      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
877    
878    checkpoint57o_post
879    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
880      (2) its ready to be documented during the 20050801 DocFest
881    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
882      for ideal_2D_oce and lab_sea on linux_ia32_g77
883    o set to #undef CTRL_SET_OLD_MAXCVARS_30
884      in global1x1_tot/code_seaice_adj to access indices 32, 33
885      (worth another tag)
886    
887    checkpoint57n_post
888    o adding precip control xx_precip 32
889    o adding swflux control xx_swflux 33
890    o Replacing 10 forcing penalty cost routines by 1 generic.
891    o Implementing partitioning in time-mean and variable adjustment
892      for atmos. state.
893    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
894    o in natl_box_adjoint:
895      * updated exp 1 to 10
896        (but does not have time-mean vs. variable split results yet)
897    o updated global1x1/*_seaice_adj/
898      to incorporate latest changes
899    o enable useSingleCpuIO for mdsio vector routines
900      (applies in particular to tapelev I/O)
901    o removed inefficient K-loop in all active_file*control*.F
902    
903    checkpoint57m_post
904    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
905      and advect_cs (use EXCH-2 and standard cs-32 grid files).
906    o pkg/exch2: filling of face-corner halo regions is optional
907      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
908    
909    checkpoint57l_post
910     tag before updating tutorials (pre-release-2)
911    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
912       for output and interpolation of input fields onto model grid)
913    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
914       Affects results of exp. rotating_tank ; update output.txt.
915    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
916          and taking the square quantity and/or using a fraction-weight field.
917    o fix aim_diagnostics_init.F mate numbers.
918    o add mnc output capability to diagnostics/diagstat and update
919      our cvsignore files for the ACSII output generated
920    
921    checkpoint57k_post
922    o lab_sea now uses diagnostics package and provides a suite of
923      new EXF diagnostics output.
924    
925    checkpoint57j_post
926    o exf
927      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
928        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
929        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
930      * extended diagnostics output
931        - now includes all EXF variables
932        - hs, hl moved to common block
933        - separate S/R for diagnostics, called after ctrl vector is added
934        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
935        - EXFqnet contains true Qnet (i.e. includes qsw)
936      * updated verif. lab_sea, global_with_exf
937      * Rearranging hflux (exf_mapfields -> exf_getforcing)
938        to ensure that diagnostics sees a true EXFqnet
939    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
940    o diagnostics pkg: change pointers so that 1 diagnostic can be used
941      several times with different frequencies.
942    o mnc-ify the thsice package as requested by Daniel Enderton
943      - the monitor--MNC output needs work
944      - many attributes need to be added (most are currently blank)
945    o mnc-ify theaim_v23 package as requested by Daniel Enderton
946      - many attributes need to be added (most are currently blank)
947    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
948    o add Sadourny like discretization to the 4th.O vorticity advection scheme
949    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
950      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
951         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
952    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
953     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
954    
955    checkpoint57i_post
956    o Diagnostics package was changed: diagnostic allocation is now deactivated
957      by setting an empty file name in the namelist (used to be by setting 0 frequency)
958    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
959      add 1rst Order upwind vertical Shear.
960    o add a quick fix for A/B checkpointing in OFFLINE mode
961    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
962      end-run around the C/Fortran linking horror in eesup/src/timers.F
963    o added pkg/runclock: allows user to terminate run based on wall clock
964    o added non-hydrostatic scaling parameter: nh_am2
965    o pkg/my82: futile attempt to make results compiler-independent by adding
966      some "_d 0", etc. no effect.
967    o for mnc output, fill the 'T' coordinate var with myTime and create a
968      separate 'iter' variable for iteration count
969    o pkg/diagnostics:
970      add new capability: output of Global/Regional & per-level statistics ;
971      tested against monitor output (including land & thSIce) on various exp.
972    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
973    
974    checkpoint57h_done
975      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
976      data.diagnostics, data.gchem, data.ptracers) is done.
977    
978    o pkg/diagnostics: prepare for Global/Regional statistics.
979      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
980    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
981      and rename it: DIFFERENT_MULTIPLE
982    
983    checkpoint57h_post
984    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
985    o pkg/diagnostics: change output frequency, now in seconds (instead
986      of Nb of iterations). This requires to change data.diagnostics.
987    checkpoint57h_pre
988    
989    o in mnc, let the user create the output dir if both mnc_outdir_date
990      and mnc_outdir_num are false
991    o add fflags() to pkg/diagnostics which allows one to specify, on a
992      per-file basis, the file precision [default behavior is unchanged]
993    o added diagnostics to pkg/kpp, including computation of mixed layer
994      depth based on a temperature/density criterion
995    o updated verification/natl_box to test the new pkg/kpp diagnostics
996    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
997    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
998    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
999      not mnc -- this mistake was found by JMC and is now corrected
1000    
1001    checkpoint57g_post
1002    o add Adams-Bashforth 3rd Order time stepping:
1003      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1004      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1005    checkpoint57g_pre
1006    
1007    o make lambda[Theta,Salt]ClimRelax spatially varying
1008      (default remains spatially uniform constant based on tau)
1009    o added new control variables
1010      * init. uVel, vVel, etanN
1011      * lambda[Theta,Salt]ClimRelax
1012    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1013      (suggested by G. Forget)
1014    
1015    checkpoint57f_post
1016    o add parameter "baseTime" = model base time = time at iteration zero
1017      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1018      account for baseTime shift
1019    o move Coriolis arrays from PARAMS.h to GRID.h
1020    checkpoint57f_pre
1021    
1022    o mnc-ifying the seaice package
1023    o introduced an alternative length scale calculation for use in the limiting
1024      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1025    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1026    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1027      as well as grad(vort3).  Made it compatible with both approximate form
1028      for the cubed sphere and full form of these gradients.  Added flag
1029      useFullLeith to select between approximate and full form.  
1030    o add "d0" in getcon.F to reduce differences between compilers/platforms
1031      update output.txt of exp. fizhi-gridalt-hs
1032    o change port_rand funtion to allow to set the seed.
1033    o fix obscure MNC bug involving conversion between reals and integers
1034      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1035        new version is now more standards-compliant
1036    o adjoint-related modifications
1037      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1038      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1039      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1040    
1041    checkpoint57e_post
1042    o Adding eddy stress controls a la Ferreira et al.
1043    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1044    
1045    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1046      update output.txt of exp. fizhi-gridalt-hs
1047    o add more "Z" dimensions and associated coordinate vars to MNC
1048    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1049    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1050      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1051      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1052      months and years.  Requires pkg/cal.
1053    o diagnostics: add pickup functionality
1054      - off by default for backwards compatibility
1055      - current version only uses MDSIO -- MNC will be added
1056    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1057    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1058    
1059    checkpoint57d_post
1060    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1061    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1062      output from the diagnostics package
1063    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1064    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1065      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1066    o add coordinate variables to the MNC output from the diagnostics package
1067    o change MNC-flags default value: true when useMNC=TRUE
1068    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1069      the ability (off by default) to read the grid information using MNC
1070    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1071    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1072    o do snap-shot diagnostics at the middle of the time-interval (instead of
1073      at the end).
1074    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1075      new test for AIM with thSIce + slab-ocean
1076    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1077    o move state variable diagnostics to the beginning of the time step ;
1078      (note: still needs some work specially for snap-shot diagnostics)
1079      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1080    
1081    checkpoint57c_post
1082    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1083    o generate new output.txt files on faulks with g77 & the new -ieee option
1084    checkpoint57c_pre
1085    
1086    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1087      update output.txt of exp. global_ocean.90x40x15
1088    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1089      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1090    o add saltFlux(+File) forcing capability with periodicExternalForcing
1091    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1092    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1093    o improvements for the MNC output from DIAGNOSTICS:
1094      - correct handling of the unlimitied dimension
1095      - all dims now have associated coordinate variables
1096      - variables located at U, V, and Corner ("Z") points are now written
1097        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1098        *all* data points are output
1099    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1100    o added pkg/seaice/seaice_monitor.F
1101    o mdsio_readfield.F can now read files visible only to master MPI process.
1102    o pkg/seaice: some test code for ice-modified ocean stress
1103    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1104      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1105      spurious negative numbers for precipitation and humidity.  Will cause
1106      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1107    o pkg/ctrl/
1108      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1109        May be enabled via doPackDiag
1110      *  introduce z-scaling of
1111         + gradient (doZscalePack) and
1112         + control (doZscaleUnpack)
1113    o pkg/mdsio/
1114      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1115      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1116    
1117    checkpoint57b_post
1118    o simplify options in diagnostics_fill arguments (remove weird combinations)
1119    o fix MNC coordinate variables so that they now contain per-face index
1120      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1121      general, EXCH2 grids are only aligned to a "local" coordinate system
1122    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1123    o Implement instantaneous output within pkg diagnostics:
1124      setting a negative frequency in data.diagnostics produces
1125     "snap-shot" output (as opposed to time-average if freq > 0)
1126    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1127      NOTE: change ptracer diagnostics name: use 2 characters to work with
1128            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1129    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1130      becomes the coordinate variable for the 'T' dimension
1131    o add CF-style coordinate variables to MNC
1132      - just a first cut:  numbers are meaningless on the cubesphere and
1133        missing along the T axis but otherwise it works!
1134    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1135    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1136    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1137      this is based directly on what the model compute, so that the content of
1138      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1139    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1140    o clean up build options files for SunOS, in particular
1141      - remove -traditional from xmakedepend
1142      - change -xarch=v9 to -xarch=native for f77
1143      - restore use of make (not gmake)
1144      - add CC=gcc if using g77
1145    o changes per discussion of AM, JMC, & EH3 today:
1146      - move redundant "grid" variables out of "state" -- in preparation of
1147        creating proper CF-style coordinate variables and in recognition
1148        that any/all grid variables can be easily copied (eg. w/NCO) from
1149        the grid files into any of the other NetCDF files
1150      - *always* output grid variables with MDSIO (this will eventually be
1151        changed)
1152      - output MNC grid file if useMNC is true
1153    o every instance of _END_MASTER() has been found and replaced with
1154      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1155      preprocessors
1156    o re-arrange diagnostics pkg initialisation:
1157     - allow each package to extend the available diagnostics list
1158     - add some checking and fix small problems (multi-threaded, ...)
1159     - new S/R diagnostics_fill (replace fill_diagnostics):
1160       look through the short list of active diag. (instead of the long list)
1161       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1162    
1163    checkpoint57a_post
1164    o this set of changes restores TAMC compatibility
1165      tested for global_ocean.90x40x15 adjoint on trough
1166      (what a pain)
1167    
1168    checkpoint57a_pre
1169    o some modifs in tools/build_options for sunos
1170    o call ctrl_pack for ctrl at end for optimcycle=0
1171    
1172    checkpoint57
1173    o add horizontal bi-harmonic viscosity for vertical velocity
1174      - new parameter viscA4W (defaults to viscA4)
1175      - affects only non-hydrostatic code
1176      - to be done: no-slip lateral boundary conditions
1177    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1178    o implement Implicit Vertical advection for pTracers
1179    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1180      (implemented also for implicit vertical diffusion & advection)
1181    o OBCS: extend application of tracer open boundary conditions
1182      to a strip beyond the boundary of width Olx/Oly
1183    o add call monitor to TAF set of required calls (flow directives)
1184      and include in natl_box_adjoint
1185    o untangle a few ifdefs related to cost, ctrl, autodiff
1186      untangel a few ALLOW_ECCO_OPTIMIZATION
1187    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1188      (theta2, salt2 in ecco_cost_weights)
1189    
1190    checkpoint56c_post
1191    o OBCS as control variables
1192      - update ctrl_ad_diff.list, obcs_ad_diff.list
1193      - remove balance of obcs controls from default
1194      - fix index bug nobcs in ctrl_init
1195      - fix dummy fields filen in ctrl_pack
1196      - add dummy weights for obcs
1197    o lsopt: comment out fort.94 output
1198    o optim:
1199      - remove unnecessary header files
1200      - adjusted namelists
1201      - add xerbla.F to Makefile
1202    o exf:
1203      - multiple modifications of exf_check_range
1204      - unit change in exf_init_runoff from [m/year] to [m/s]
1205    o mdsio:
1206      - i/o-vector change debugLevel from debLevA to debLevB
1207    
1208    checkpoint56b_post
1209    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1210      is called from DO_THE_MODEL_IO
1211      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1212      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1213      - clean up PTRACERS_WRITE_TIMEAVE a little
1214    o add another verification experiment that tests both the cfc-pkg and
1215      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1216      reactive tendencies treated inline with regular timestepping
1217    o testreport previously did a lousy job of comparing small numbers, so
1218      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1219      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1220      testreport.
1221    o ptracers_monitor: bug fix for MPI
1222    
1223    checkpoint56a_post
1224    o GCHEM: finish reorganizating the package
1225      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1226        (introduces another 3D-array for each passive tracer, but only if
1227        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1228        gchemTendency is not needed because the timestep is done separately)
1229      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1230      - GCHEM is now---more or less cleanly---separate from PTRACERS
1231      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1232        so clear to me how that should be done in a general way.
1233    o CFC: improve formatting of output in CFC_ATMOS
1234    o PTRACERS:
1235      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1236        that ALL experiments with ptracers enable can be checked. This makes
1237        GCHEM_MONITOR obsolete.
1238      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1239        monitorFreq
1240      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1241    o add PTRACERS (PTR0[1-5]) to testreport output
1242    o exf_check_range:
1243      * default changed to .TRUE.
1244      * will check values for niter0 if debLevA, every timestep if debLevB
1245      * STOP in exf_check_range if 'out of range'
1246      * range chosen generous to allow for potential extema
1247      TBD: a version with stricter range
1248           permitted range would be runtime parameters
1249    o GMredi:
1250      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1251      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1252      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1253    o GCHEM:
1254      - move call to GCHEM_FORCING_SEP, so that it is now called before
1255        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1256      - introduced a useGCHEM runtime flag and applied it everywhere.
1257      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1258        this flag is now only visible within GCHEM-pkg routines.
1259      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1260        be replaced by a 3D array that is computed before thermodynamics; for
1261        this, the tracer ID iTracer had to be included into the parameter list
1262        of ptracers_forcing
1263      - set up forward_step to call gchem_forcing, that will replace
1264        gchem_forcing_int in ptracers_forcing
1265      - cleaning up
1266    o small cleaning of exch2: remove files that are also in eesupp/src
1267    
1268    checkpoint56
1269    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1270    o mnc: cleanup "full" files--fixes out-of-memory problem
1271    o ECCO-GODAE
1272      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1273      * fully merged and updated from SIO code
1274        windstress sign change affects
1275        - exf_inscal_[u/v]stress
1276        - sign of xx_tau[u/v] adjustments
1277        - signs in cost_scat
1278      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1279      * natl_box_adjoint updated and compressed
1280      * 2-level checkpoint switch added
1281        (tested in EXP. 1 of natl_box_adjoint)
1282      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1283    o SVD
1284      * first complete, non-hacked version for SVD calculations
1285      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1286        performed via direct access files admtlm_vector.it????
1287        (via ctrl_[un]pack)
1288      * optimcycle is used for ARPACK iteration counter
1289        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1290      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1291        and add linear transforms where necessary
1292      * controls are initial/final SST, SSS (can be extended; need to check
1293        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1294    o mdsio: filename info to both stderr, stdout
1295    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1296      from sign change
1297    
1298    checkpoint55j_post
1299    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1300      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1301    o add consistent build directories and .cvsignore files to verification
1302    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1303    o make all subroutines 30 or less characters in length for certain older
1304      compilers to work (a thorough search only turns up two routines in
1305      pkg/ptracers)
1306    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1307      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1308    
1309    checkpoint55i_post
1310    o change arrays for total vertical diffusivity (2.D if explicit,
1311      3.D if implicit) ; each ptracer uses its own background value.
1312    o added mnc/NetCDF output capability to ocn_compon_interf
1313      - added bits to verification/cpl_aim+ocn so that it can run on
1314        ITRDA and other clusters without the mpirun "-wd" option
1315    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1316      configuration
1317    o give MNC the ability to create additional files rather than
1318      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1319      - the default is just less than 2GB which is a practical limit
1320        on many systems
1321    o Compute the non-local term using either KPP vertical diffusivity (=default)
1322       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1323    
1324    checkpoint55h_post
1325    o add verification test "vermix"
1326    o remove all the *_ioinc flags and replace with the single global
1327      outputTypesInclusive flag
1328    o allow to set a vertical profile of vertical diffusivity for T & S
1329    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1330    o useMNC moved from data.mnc to data.pkg
1331    
1332    checkpoint55g_post
1333    o Renaming carbon AD experiments to comply with testreport conventions
1334    o Updating adjoint of Held-Suarez hs94.1x64x5
1335    o Fixing directives for non-ECCO forward_step, after ECCO directives
1336      have been fixed to avoid recomp. of do_oceanic_phys
1337      Works well for global_ocean.90x40x15,
1338      but recomp. issue remains for carbon
1339    o Updating adjoint output for natl_box_adjoint after
1340      pkg/ecco has been modified (see taga c55d_post)
1341    
1342    checkpoint55f_post
1343    o rename to timeave_init_fixed
1344    
1345    checkpoint55e_post
1346    o some delicate re-shuffle of store directives to avoid one
1347      extra call of do_oceanic_physics
1348      affects ecco_the_main_loop.F, do_oceanic_physics.F
1349      checkpoint_lev1_directives.h
1350    o NB: this may break global_ocean adjoint temporarily,
1351      but it is clear how to fix it. Will do later, need this now.
1352    
1353    checkpoint55d_post
1354    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1355    o ecco_cost_weights is modified to 1x1 runs
1356    o modifs to allow observations to be read in as
1357      single file or yearly files
1358    o enable to read exf forcing fields as either
1359      single file or yearly files (flag useExfYearlyFields)
1360    checkpoint55d_pre
1361    
1362    o switch between 2-level and 3-level checkpointing
1363    o add ability of MNC to write local and "partial" (eg. 2D slices where
1364      the full 3D field is never actually stored) arrays to NetCDF files
1365      with the correct (that is, the complete multi-dimensional) set of
1366      array indicies
1367      - used in mom_vecinv() to write the diagFreq output
1368      - tested (demonstrated) in verification/aim.5l_cs
1369    o further mnc-ification
1370      - add verification/lab_sea to the list with mnc setups
1371      - fix undefined mnc v-names in cd_code
1372      - add kpp to mnc output (both snapshot and timeave)
1373    o non-hydrostatic code
1374      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1375        in calc_gw.F
1376      - defaults to viscAh
1377      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1378        friction or Leith) in non-hydrostatic mode, as long as there is
1379        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1380    o pkg/cost
1381      extend simple cost functions to treat time mean quantities
1382      (T,U,V) via cost_accumulate_state from cost_tile
1383    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1384        be 2 times larger than the minimum size the advection scheme requires.
1385        now get a perfect conservation of salt in advect_cs test-exp (updated)
1386    o GGL90 (Gaspar's TKE mixed layer)
1387      - add horizontal diffusion of TKE, requires exchanges in
1388        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1389        default. In OPA there is no horizontal diffusion of TKE but the
1390        mixing coefficients are computed from a horizontal average of TKE of
1391        6 points or so. I think that diffusion has a little more physical
1392        justification.
1393      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1394        was in vain)
1395      - mask tke-variable in ggl90_init
1396    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1397    o fix biharmonic diffusion on CS-grid.
1398    o more obcs stuff
1399      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1400        for reading boundary values. This routine is called from
1401        obcs_prescribe_read
1402      - updated obcs_check
1403      - changed sponge layer relaxation parameter units for days to seconds
1404      - turned off sponge layer by default
1405      - changed argument list of OBCS_CALC to myTime+deltaTclock
1406      - fixed about 35 bugs in obcs_external_fields_load
1407    
1408    checkpoint55c_post
1409    o obcs stuff
1410      - new runtime flags useOBCSprescribe, useOBCSbalance
1411      - re-arranged obcs_calc
1412      - moved exf_getobcs to obcs_prescibe_read
1413        obcs_prescibe_read is called after ORLANSKI stuff
1414        and independent of it (executable can contain all).
1415      - updated obcs_check
1416      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1417        These may be necessary only if tangential velocities are
1418        prescribed at OB, not sure, needs testing.
1419    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1420      which simplifies the calls and passes the ifc check-bounds test
1421    
1422    checkpoint55b_post
1423    o add a 2D scalar, Z location, exchange_2 routine.
1424    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1425      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1426      affects advect_cs results (for the wrong reason): update output.txt
1427    o use a more standard discretization for biharmonic viscosity ;
1428     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1429      affects results of dome set-up: update output.txt
1430    o fix gad_advection.F (CubedSphere part), back to version 1.23
1431    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1432    
1433    checkpoint55a_post
1434    o merged code to
1435      * prescribe/read time-dependent open boundaries
1436        (works in conjunction with exf, cal)
1437      * sponge layer code for open boundaries
1438      * each boundary N/S/E/W now has its own CPP option
1439        (healthy for the adjoint)
1440    
1441    checkpoint55
1442    o up-to-date adjoint of previous breaks
1443      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1444      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1445      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1446      - carbon: * remove tr1-related adjoint verification
1447                * add ptracer as control variable
1448    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1449      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1450    
1451    checkpoint54f_post
1452    o in verification/carbin/ remove experiment related to
1453      ALLOW_PASSIVE_TRACER (array tr1 etc)
1454      code_ad/ input_ad/ results_ad
1455    
1456    o add two new packages
1457      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1458        + subject to optimization (memory)
1459      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1460        + subject to reordering (many GOTOs in the original code)
1461        + so far opps is called for every (i,j) point, and then operates in
1462          the vertical; one may want to reorder the scheme in order operate in
1463          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1464          fields)
1465    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1466      - all verification tests compile and run with linux_ia32_g77
1467      - defaults are compatible with current input files--nothing
1468        should change if you were not previously using MNC
1469      - MNC output has been added in numerous places (eg. timeave)
1470        but there are still a few writes not yet do-able with MNC
1471        (this is in progress)
1472      - flags now allow for either/or/both use of MDSIO and MNC and
1473        documentation will soon follow
1474      - numerous small formatting cleanups for ProTeX
1475    o add version info (via BUILD_INFO.h) to MNC and stdout
1476    
1477    checkpoint54e_post
1478    o add two new packages
1479      - pp81 (Packanowski and Philander, 1981), Richardson number and
1480        stratification dependent mixing
1481      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1482      - these scheme operate in a similar manner as KPP (without ghat, of
1483        course), however there is only one diffusivity that is used for both
1484        temperature and salinity (and passive tracers)ç
1485    o add offline package
1486    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1487      provided by Stephanie Dutkiewicz
1488    o genmake2: add ability to search for C compilers and cleanup test output
1489      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1490    
1491    checkpoint54d_post
1492    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1493    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1494      leading to additional shift by 5 days each year of integration
1495       (i.e. leading to considerable offset over the years)
1496    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1497    o start with no AB and no initial filtering (staggerTimeStep):
1498      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1499    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1500      (external loading & cpl import/export stay in forward_step.F)
1501    o update coupling interface to work with new staggerTimeStep
1502    o change MDSIO ptracers_pickup.
1503    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1504    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1505    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1506    
1507    checkpoint54c_post
1508    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1509      this affects (truncation error) output.txt of test-exp:
1510       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1511    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1512    o change Qnet to always be the net heat flux, (+upward).
1513      affects (truncation error) output of natl_box exp.: updated
1514    o define the max number of passive tracers in PTRACERS_SIZE.h
1515    o start to test mnc routinely in exp0
1516    o add sea-ice loading (sIceLoad) as a new forcing field.
1517    
1518    checkpoint54b_post
1519    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1520       impressive on Altix and Opteron systems)
1521    o diagnostics can now write NetCDF files through the mnc package
1522    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1523    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1524    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1525      affects (truncation error) output of lab_sea & natl_box exp.: updated
1526    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1527    
1528    checkpoint54a_post
1529    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1530    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1531    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1532    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1533      + internal_wave (shift in writing cg2d_ini_res)
1534    checkpoint54a_pre
1535    
1536    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1537      - modified verification/lab_sea and natl_box_adjoint accordingly
1538    
1539    checkpoint54
1540    checkpoint53g_post
1541    o prepare splitting of thermodynamics: store convect.counter in common block
1542    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1543      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1544    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1545    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1546    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1547    o restore adjointability
1548    
1549    checkpoint53f_post
1550    o modifications that affect AIM experiment results (update output.txt):
1551      - no advection of S at top interface Nr (pkg/generic_advdiff)
1552      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1553    o AIM pkg:
1554      - include stability function into surf.Flux derivative relative to Tsurf
1555      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1556    
1557    checkpoint53e_post
1558    o merged cylindrical coord configuration
1559    o added rotating_tank experiment
1560    checkpoint53e_pre
1561    
1562    checkpoint53d_post
1563    o faulks upgraded: re-generate output.txt that have changed:
1564       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1565    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1566    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1567    o added Sadourny discretization of Coriolis
1568      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1569      - re-enabled use of omega3 (useAbsVorticity)
1570    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1571      vector-invariant equations
1572      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1573    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1574      hopefully without new bugs
1575      - still to do: biharmonic friction for non-hydrostatic w
1576    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1577    o regenerated output for global_ocean_ebm (using -ieee)
1578    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1579      of mom_common/
1580      - simple re-arrangement of instructions within computing loop
1581    checkpoint53d_pre
1582    
1583    checkpoint53c_post
1584    o new version of coupler for AIM+thSIce and Ocean models
1585     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1586     - land: change Evaporation of snow
1587     - aim with thSIce: fix bug in snow-precip.
1588    o changes to calc_gw.F
1589     - bug fix for w^2 term near the bottom boundary
1590     - (hopefully) improve the lateral slip boundary condtions for use with
1591        partial/looped cells
1592      - because the bug fix changes two verification experiments anyway (exp5
1593        and plume on slope), change the lateral boundary condition from half slip
1594        to the value of no_slip_sides
1595    o ebm package wasnt quite up to the parallel task. Fixed that.
1596    o Adjoint of EBM package + verification
1597      * TLM OK
1598      * ADM not sufficient accuracy yet (needs further testing)
1599    
1600    checkpoint53b_post
1601    o Commiting new energy balance model to repository
1602      * package is pkg/ebm
1603      * verif. is verification/global_ocean_ebm
1604      * references are in ebm_driver.F
1605    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1606    C        Global thermohaline circulation. Part I:
1607    C        Sensitivity to atmospheric moisture transport.
1608    C        J. Climate 12(1), 71-82
1609    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1610    C        Global thermohaline circulation. Part II:
1611    C        Sensitivity with interactive transport.
1612    C        J. Climate 12(1), 83-91
1613    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1614    C        Destabilization of the thermohaline circulation
1615    C        by atmospheric eddy transports.
1616    C        J. Climate 7(12), 1870-1882
1617    o Will need long integration testing.
1618    checkpoint53b_pre
1619    
1620    o created pkg/mom_common in preparation for variable viscosity code
1621    o renamed and split ini_mnc_io
1622    o pkg/land: only liquid water can diffuse or run-off
1623    o AIM using land: soil wetness availability account for snow
1624    o added printMapIncludesZeros to EEPARMS namelist
1625    
1626    checkpoint53a_post
1627    o restore TAMC compatiility for exf_constants.h
1628      (no usage of _d in .h)
1629    o Additional storing in KPP in an attempt to fix
1630      TAMC problem with adjoint of KPP code.
1631      (no success...)
1632      Identical code works fine with TAF.
1633    o Fixed verification/natl_box_adjoint experiments.
1634      Initial conditions for Experiments 4 and 5 are now
1635      set to "SEAICE_initialHEFF=0", which is more reasonable,
1636      and hence gives results closer to that of Experiment 2.
1637      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1638    
1639    checkpoint53
1640    o stable checkpoint with up to date adjoint
1641      TLM tests only run for 1st grdchk at the moment. Its unclear if
1642      this is a code problem or a problem with resetting code for g_
1643      variables that is being autogenerated wrong.
1644      Otherwise:
1645       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1646       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1647         are both still in chaos following their security messes.
1648    
1649    checkpoint52n_post
1650    o various build (mostly genmake2) changes including:
1651      - ability to build/run more easily within Cygwin and MacOS X
1652      - more complicated Makefiles with a stronger dependence on Gnu Make
1653    o pkg/seaice modifications
1654      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1655        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1656        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1657      - changed proxy for geostrophic velocity and updated
1658        verification/lab_sea/results/* accordingly
1659      - removed ADI dynamic solver from pkg/seaice
1660      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1661        they caused a segmentation fault under certain circumstances
1662      - removed unused field WATR
1663    o bug fix in exf-package:
1664      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1665         now reflect that.
1666    o small fixes in the cal-package:
1667      - set reference date to first of January for the 'model'-calendar
1668      - failing of cal_CheckDate in cal_FullDate now actually results in a
1669        warning
1670    o small modifications in exf-package to increase flexibility:
1671      - change climtempfreeze from a constant to a runtime parameter that
1672        is specified in data.exf_clim (default = -1.9)
1673      - introduce runtime parameter windstressmax (default = 2.0) that is
1674        specified in data.exf
1675    o fix in pkg/thsice:
1676      - update Evap (Tsf changes) to be consistent with Latent heat flux
1677      - maintain snow precipitation unchanged (even if Tsf >=0).
1678     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1679    
1680    checkpoint52m_post
1681    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1682      this does not change any of the results, because myIter=0 in swfrac always
1683      lead to jwtype=2 (the default anyway), but the call makes little sense
1684      as a default
1685    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1686    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1687      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1688    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1689    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1690    o extending useSingleCpuIO option to work with new exch2 I/O format
1691      - old-style, missing-tile I/O is still accessible by defining CPP
1692        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1693    o monitor package can write to NetCDF files and/or STDOUT
1694    o fix re-definition bug in MNC_GRID_INIT_ALL()
1695    o doc/api_reference added
1696      - a framework for building an API Reference Manual using all
1697        the "protex" comments embedded in the code
1698      - see pkg/generic_advdiff, pkg/mnc for examples
1699    o MNC:
1700      - make myThid the last argument for all subroutines
1701      - new default for the grid files: NO halos
1702      - add useMNC and other run-time flags
1703      - separate per-file-group handling of the unlimited dimension
1704      - early initialization of MNC w/ flags read at the eeboot stage
1705        and lookup tables set in initialize_fixed
1706      - write all MNC output to a freshly-created directory
1707    o thermodynamics sea-ice (thsice) is now tested with testreport.
1708    o test exp. advect_cs: use the standard cs32 grid ; update output.
1709    o Added functionality to grdchk:
1710      pick global i,j,k position (or nearest wet) where to perform check.
1711    
1712    checkpoint52l_post
1713    o new land formulation:
1714      a) use ground enthalpy as prognostic variable to ensure exact
1715         energy conservation.
1716      b) account for water temperature and for latent heat of freezing
1717         in all processes (rain, run-off, ground storage)
1718      c) compute surface and ground temperature implicitly.
1719    o aim_v23 modification for new land model:
1720      a) Treat separately land / ocean / sea-ice surface fluxes
1721         to allow implicit computation of land & sea-ice surface temp.
1722      b) add snow precipitation.
1723    checkpoint52l_pre
1724    
1725    o fix problem (when 1 tile is empty) in min/max monitor.
1726    o fix bug in timeAve (u,vZetatave in common block)
1727    o no restoring terms under ice for pkg/seaice
1728    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1729    o bug fix for pkg/seaice pickups
1730    o change MNC call locations and add coordinate attributes
1731    o mask vorticity at the corner ; affects global_ocean.cs output
1732    o fix ini_curvilinear_grid ; test CS experiments with mpi
1733    o aim.5l_cs: modify sea-ice fraction input file ; update output
1734    o exf: Adding simple range check routine for exf fields after read
1735    
1736    checkpoint52k_post
1737    o removed top-level directory "diags"
1738      - we migrated these functions to pkg/timeave a long time ago
1739    o fixed bug introduced in pkg/monitor
1740    o accuracy ctrlprec = 32 insuffient for gradient checks using
1741      averaged fields (I/O via cost_averages)
1742      -> use ctrl.h in active_file*.F to control I/O precision.
1743    o paramter list of CALL ADTHE_MAIN_LOOP
1744    o added initial do_the_model_io to ecco
1745    o set all ...Freq to zero after cost_final
1746      taveFreq, dumpFreq, pChkptFreq
1747    o MAIN and ECCO differentiability restored
1748    
1749    checkpoint52j_post
1750    o fix nchklev in tamc.h for global_ocean...
1751    o Bringing flow and store directives up-to-date
1752    o Really weird thing!
1753      call do_the_model_io from the_main_loop with parameters
1754      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1755      TAF places a faulty re-call of initialise_varia
1756      after cost_final call which should not be there!
1757    checkpoint52j_pre
1758    
1759    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1760      error messages
1761    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1762    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1763      debug output
1764    o modfied mdsio_writefield.F to handle non-global files under exch2
1765    o update AIM Cubed-Sphere exp (aim.5l_cs):
1766      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1767    o update AIM Equatorial Channel exp:
1768      use standard aim_v23 pkg and change the SST fields to be more realistic.
1769    o globalFile now works with exch2
1770    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1771      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1772    o limit timeave output for hi-res integrations
1773    
1774    checkpoint52i_post
1775    o removed CPP_EEOPTIONS.h from verification/*/code
1776    o updated the tiling for global_ocean_pressure
1777    checkpoint52i_pre
1778    
1779    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1780      the old pkg/aim).
1781    
1782    checkpoint52h_pre
1783    o shortened offending lines in exch2_send_rx?.template
1784    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1785    o genmake2: add build & execute test for NetCDF code
1786    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1787      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1788    o added useSingleCPUIO flag to monitor.F and mon_out.F
1789    o added temporary hack for sea-ice dynamics on the cube:
1790      metric terms are ignored and it is assumed that
1791      there is no sea-ice on cube faces 1, 2, 4, and 5.
1792    
1793    checkpoint52f_post
1794    o added exch2 cube routines to pkg/exch2
1795    o modified hs94.cs-32x32x5 to use it
1796    o added new grid files to hs94.cs-32x32x5
1797    checkpoint52f_pre
1798    
1799    checkpoint52e_post
1800    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1801      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1802    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1803      to work with implicit vertical advection and AB ;
1804    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1805    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1806     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1807    checkpoint52e_pre
1808    
1809    o fix bug in impldiff when Nr=1 or Nr=2.
1810    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1811    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1812    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1813      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1814    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1815    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1816    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1817    
1818    checkpoint52d_post
1819    o re-tiled many expts to allow comparison in multi-processor mode
1820      - updated output accordingly
1821      - changed hs94.128x64x5 to use intial T from file rather than use the
1822        random number generator
1823    o add infrastructure in model routines for fizhi and gridalt packages
1824    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1825    o changes to permit hi-res, cubed-sphere, configuration
1826      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1827      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1828      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1829        of surface winds for the cube
1830      (A verification experiment, based on global_ocean.cs32x15, but with
1831       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1832       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1833       complete with example surface forcing files and matlab scripts to look
1834       at the output and compare it with that of global_ocean.cs32x15.)
1835    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1836       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1837       to conform to the common rule.
1838    o check-in the first version of the coupler + interfaces for multi-components
1839       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1840       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1841       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1842       - ocean and atmos. share the same horizontal grid (no interpolation).
1843       - exchanges between component and coupler is done in forward_step
1844    o new verification experiment, cpl_aim+ocn:
1845       coupled ocean - AIM atmosphere on cs32 grid.
1846    
1847    checkpoint52d_pre
1848    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1849    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1850    
1851    checkpoint52c_post
1852    o Fixing OPTIONS files for use of exf:
1853      - ALLOW_ECCO not needed
1854      - ECCO_CPPOPTIONS.h should not be included from
1855        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1856        as has been the case in the past
1857      - All cal/exf related options are currently set in
1858        single header file. Should remain so until we
1859        agree on a consistent new policy.
1860    o Removed all CPP options for cal package.
1861      cal has no more CPP options.
1862    o modified STOREs in GAD_ADVECTION
1863    o corrected key comp. for passkey
1864    
1865    checkpoint52b_post
1866    o new version: "thsice" of thermodynamic sea-ice pkg:
1867     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1868     - modify fluxes but do not change theta directly;
1869     - light cleaning of bulk_force pkg (still needed with thsice).
1870     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1871       + output_thsice.txt to test thsice & bulk_force pkgs.
1872    o put back grid & coriolis monitor output.
1873    checkpoint52b_pre
1874    
1875    o call "do_the_model_io" at the beginning (=> dump initial state)
1876    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1877    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1878      (need info on NUMBER_OF_PTRACERS)
1879    o missing PTRACERS headers in some routines
1880    o default tamc.h in pkg/autodiff supposed to crash
1881      to ensure proper customization
1882    
1883    checkpoint52a_post
1884    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1885      - moved surfaceTendencyTice from pkg/seaice to main code
1886      - subroutine FREEZE_SURFACE now limits only surface temperature
1887        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1888        => new output.txt for global_ocean.cs32x15 & global_with_exf
1889      - keep the old version of FREEZE for backward compatibility;
1890        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1891      - corresponding modifs for TAF directives
1892    o added surface flux output variables to TIMEAVE_STATVARS
1893    o time-averaged output for pkg/ptracers
1894    o fix problem with ECCO-related divided adjoint
1895      snapshot file was missing some ad-variables,
1896      but no warning issued by TAF
1897    
1898    checkpoint52a_pre
1899    o some bug fixes for #undef REAL4_IS_SLOW
1900    
1901    checkpoint52 = ecco_c52_e35
1902    o after testing adjoints of checkpoint51u_post
1903    
1904    checkpoint51u_post
1905    o this is the post-merge tag of the ecco-branch
1906      (needs another clean checkout and re-testing)
1907    o various natl_box_adjoint configs and results
1908      but no input fields
1909    o obcs adjoint not yet merged!
1910    o adding ECCO global 1x1 and 2x2 degree configs
1911    o updated/extended some store directives for seaice
1912    o pkg/ecco now containes ecco-specific part of cost function
1913    o top level routines the_main_loop, forward_step
1914      supersede those in model/src/
1915      previous input data.cost now in data.ecco
1916      (new namelist ecco_cost_nml)
1917    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1918    
1919    checkpoint51t_post
1920    o this is the pre-merge tag of the ecco-branch
1921    
1922    checkpoint51s_post
1923    o cleanup: removed various obsolete #define-s
1924    o pkg/grdchk
1925      - renamed 'ph-grd 3' to 'grad-res'
1926      - merged from ecco-branch
1927        (remaining bug fixes for obcs gradient checks)
1928      - additional high-precision output for testreport
1929        (grep for 'precision_grdchk_result')
1930    
1931    checkpoint51r_post
1932    o cleaned up or removed CPP_OPTIONS.h files
1933    o updated results for some of the tests to reflect the new
1934      optfiles (-ieee: -O0 instead of -O3)
1935    
1936    checkpoint51q_post
1937    o cd_code:
1938      - moved cd_scheme.F -> cd_code_scheme.F
1939      - separate read_checkpoint from cd_code_ini_vars.F
1940      - separated cd_code part from write_checkpoint
1941      - updated AD_SOURCE, generated .flow
1942      - added CD_CODE_VARS.h to the_main_loop
1943      - Moving cd_code specific store dir.s to pkg/cd_code
1944    o ctrl package totally restructured
1945      - pack/unpack now optional and decoupled from
1946        xx_/adxx_ I/O
1947      - ctrl_pack/unpack cleaned
1948        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1949      - confined inclusion of AD_CONFIG.h to where necessary.
1950    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1951    
1952    checkpoint51p_post
1953    o create initial cd_code package
1954      - WARNING: the initialization of fields within packages
1955        is broken because INI_FIELDS (where READ_CHECKPOINT is
1956        called) is called *before* PACKAGES_INIT_VARIABLES.
1957        This seems to be backwards since
1958        1) its important to initially zero the entire field including
1959           the "halo" region
1960        2) zeroing needs to be done *before* reading pickup info
1961           and the pickup call might or might not happen in any
1962           particular run
1963      - this needs an overhaul for R2
1964    o cleanup verification/*/code/GMREDI_OPTIONS.h
1965    o cleanup testreport
1966    
1967    checkpoint51o_post
1968    o bringing AD-related verif's up to date with genmake2
1969      - carbon/
1970      - global_ocean.90x40x15/
1971      - hs.94.1x64x5/
1972      - (front_relax/ )
1973    o (more) consistent directory structure for AD-related verif.'s
1974    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1975    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1976    o bug fix in find_alpha.F for MDJWF:
1977      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1978        change rho -> rho-rhoConst
1979      - replace call find_rho to find_rhonum
1980    o initialisation of rFlx extended to full array (required by TAF)
1981      and shifted to thermodynamics
1982    o removed PTRACERS.h in ptracers routine
1983    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1984    o Correcting initialisations for fVerU, fVerV.
1985    o helping TAF to recognize dependency on kUp for
1986      fVerU, fVerV
1987    o Replacing delZ by delR in pkg/ctrl/
1988    checkpoint51o_pre
1989    
1990    o undid all of cp51 pending some cleanups and discussion
1991    o added the [#include "AD_CONFIG.h"] statement to all files that need
1992       it for adjoint/tl #defines
1993     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1994     o removed tools/genmake since it no longer works
1995    
1996    checkpoint51n_post
1997    o modifications to make FREEZE flux visible to pkg/kpp
1998      - moved surfaceTendencyTice from pkg/seaice to main code
1999      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2000      - subroutine FREEZE now limits only surface temperature
2001        (this means new output.txt for global_ocean.90x40x15,
2002         global_ocean.cs32x15, and global_with_exf)
2003    o added surface flux output variables to TIMEAVE_STATVARS
2004    
2005    checkpoint51n_pre
2006    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2007    o added [#include "AD_CONFIG.h"] to all files that use the following
2008      defines:
2009      - ALLOW_ADJOINT_RUN
2010      - ALLOW_TANGENTLINEAR_RUN
2011      - ALLOW_ECCO_OPTIMIZATION
2012    
2013    checkpoint51m_post
2014    o incorporating changes to get TAMC/TAF working in genmake2
2015      - added new TAMC/TAF targets to the Makefile
2016      - various cleanups related to package handling
2017      - these changes should have no impact on the forward model
2018    
2019    checkpoint51l_post
2020    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2021     - faster algorithm for cal_addtime.F
2022     - higher precision arithmetic, where needed
2023     - pkg/exf *startdate variables changed from calendar date to
2024       model integration time
2025    
2026    checkpoint51l_pre
2027    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2028    o enable to apply restoring on S & T only in a latitude band.
2029    o update output (external_forcing_surf modif. change truncation errors)
2030       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2031    
2032    checkpoint51k_post
2033    o change default to: useNHMTerms=.FALSE.
2034     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2035       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2036     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2037        exp1, ideal_2D_oce
2038     - change data file of oceanic exp (leave the results unchanged for now)
2039       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2040    o set gravitySign automatically according to the vertical coordinate used
2041      (and change sign: back to "logical" value: +1 when R increases downward)
2042    o added an include barrier to the default CPP_OPTIONS.h and
2043      removed the #include "PACKAGES_CONFIG.h" from it
2044    o fix a bug in mom_fluxform (from chk51j_post)
2045    
2046    checkpoint51j_post
2047    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2048    o adjusted some flow directives (dynamics, thermodynamics)
2049    o added cubed-sphere case to test cost function
2050    o heckpoint_lev?_directives.h now include
2051      pkg-specific directives, whenever those are enabled.
2052    o Moving pkg-specific flow directives to corresponding pkg
2053      Moving pkg-specific differentiation list to corresponding pkg
2054      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2055      ---> conventions are
2056           - pkg_ad.flow
2057           - pkg_ad_diff.list
2058           - pkg_ad_check_lev?_dir.h
2059    
2060    checkpoint51i_post
2061    o merge of the branch-genmake2
2062      - knowingly breaks the older genmake
2063      - automatic generation of all ALLOW_${PKG_NAME} defines
2064      - new testreport supersedes older testscript
2065    o large number of package inclusion and header cleanups
2066    checkpoint51i_pre
2067    
2068    o new output for adjoin of global ocean vector invariant
2069    o fix for checkpoint of thermodynamic seaice and bulk_force
2070    o Steph gchem various cleanups
2071    
2072    checkpoint 51h_pre
2073    o fixed some single quotes
2074    o modify gchem pkg to be more versatile
2075    o modifications to clean up dic pkg
2076    o add pkg/cfc
2077    
2078    checkpoint51g_post
2079    o provide links for ARPACK and ADM*TLM
2080    o start removing verification/vero/
2081    o update AD-related stuff
2082      (in particular some IF-statements in model/src/ routines)
2083    o adding to verification/global_ocean.90x40x15/ adjoint of
2084      vector invariant setup
2085    
2086    checkpoint51f_post
2087    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2088    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2089      of tracer Green's fucntions for ocean inversion project.
2090    
2091    checkpoint51f_pre
2092    o Added on-the-fly spatial interpolation capability
2093        "USE_EXF_INTERPOLATION" to pkg/exf.
2094      - This is a temporary Cartesian-grid hack until
2095        the super-duper ESMF coupler becomes available.
2096      - See verification/global_with_exf/README for usage example.
2097      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2098        flags and modified pkg/seaice accordingly.
2099    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2100        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2101        non-local transport term.
2102    
2103    checkpoint51e_post
2104    o pkg/mom_vecinv:
2105      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2106      - add time-ave diagnostic of vorticity advection.
2107    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2108    o atmospheric geopotential: - include water vapor effect;
2109                                - use p^kappa in p* scaling.
2110    o land pkg: read initial state from files.
2111    o AIM : add stratospheric drag in the upper level
2112    
2113    checkpoint51d_post
2114    o change function ILNBLNK (=> last non-blank char.) to return zero
2115      (instead of the string length) when the string. char is empty
2116    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2117    o modif's to restore TAMC compatibility
2118      - avoid "_d" constructs in PARAMETER declarations
2119      - avoid interrupting lines by comment lines
2120    o Use cluster local disks for purely local I/O
2121      vs. globally visible disks needed for ctrl stuff
2122      (merged from ecco-branch)
2123      - new active_file_loc... and mdsio_..._loc routines
2124      - affected packages: autodiff, ctrl, grdchk, mdsio
2125    
2126    checkpoint51c_post
2127    o introducing integer flag debugLevel
2128      - debLevZero: suppress all output
2129      - debLevA: standard
2130      - debLevB: equivalent to current debugMode=.TRUE.
2131    o introducing pathname variable mdsioLocalDir for mdsio
2132      that can be specified at runtime
2133      (relevant for cluster I/O to local disk)
2134    `
2135    >>>checkpoint51b_post
2136    adjoint of ptracers
2137    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2138    o extended state in checkpoint_lev?, etc.
2139    o alternative ctrl/cost with tr1 or ptracer
2140    o new comlev1_bibj_ptracers
2141    o new ptracers.flow
2142    o made ptracers_forcing same as external_forcing_s
2143    o added verification for adjoint with ptracers
2144      - adm. grdchk fail so far
2145      - tlm. grdchk OK
2146      - checked tapelev/comlev recomputations: OK
2147    <<<checkpoint51b_pre
2148    
2149    checkpoint51a_post
2150    o added code for biogeochemistry package
2151      - new pkgs: dic, gchem
2152      - new subroutine in ptracers
2153    o modify code for biogeo packages
2154      - in model/src and pkg/ptracers
2155    
2156    checkpoint51
2157    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2158      - autodiff, ctrl, exf, grdchk, seaice
2159      kept separate packages
2160      - cost, ecco, obcs
2161    o updating verification/internal_wave, verification/lab_sea
2162      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2163    
2164    checkpoint50i_post
2165    o Preparing next differentiable checkpoint and sync
2166      of MAIN vs. ecco-branch
2167      - 1st step: this one is differentiable
2168      - 2nd step: next(! not this) checkpoint will have updated packages
2169                  from ecco-branch)
2170    
2171    checkpoint50h_post
2172    o new package "land": provide surface BC for AIM.
2173    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2174    o AIM: use true log-P extrapolation for near surface temp (= as in
2175        F.Molteni paper) ; update aim.5l_cs output.
2176    o New variable in PARM03 for more flexible pickups
2177    o somewhat cleaned package initialisation sequence for
2178      ctrl/ cost/ ecco/ in packages_... routines
2179    
2180    checkpoint50g_post
2181    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2182      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2183      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2184        made the default because of faster convergence than ADI
2185    
2186    checkpoint50f_post
2187    o exf totally restructured
2188      - replaced all exf_set_ routines by one generic exf_set_gen.F
2189        and made sure it's still differentiable
2190      - split exf_getffields.F into new exf_bulkformulae.F
2191      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2192      - updated adjoint/makefile and relevant verif. accordingly
2193    
2194    checkpoint50f_pre
2195     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2196          + change Evap over land. (update aim.5l_cs output)
2197     o added missing .cvsignores and made uniform across expts
2198     o changed configuration of tidal_basin_2d expt
2199     o added pkg/debug functions for tracing code in fatal crashes
2200     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2201     o new fn in pkg/monitor to stop model if solution grows too big
2202     o removed lots of single quotes from comments
2203    
2204    checkpoint50e_post
2205    o make KPP work with PTRACERS
2206     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2207       nearly a copy of kpp_transport_s
2208     - there is no analogue to SurfaceTendencyS, so I have to use
2209       gPtr(of the surface layer) instead
2210    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2211    checkpoint50e_pre
2212    
2213    checkpoint50d_post
2214    o change kpp output from multiple-record state files to single-record state
2215      files analogous to write_state.F
2216    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2217      analogous to the cg2d-related output.
2218    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2219      so that writing to internal file fn (with length 512) fails.
2220    checkpoint50d_pre
2221    
2222    checkpoint50c_post
2223    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2224    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2225    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2226    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2227    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2228    
2229    checkpoint50c_pre
2230    Merging from release1_p13:
2231    o bug fix for pkg/seaice dynamic solver
2232    o Added SEAICE_initialHEFF to pkg/seaice
2233    
2234    checkpoint50b_post
2235    o store u*,v* in gU,V instead of in guNm1,gvNm1
2236    o in order to put the momForcing out of the Adams-Bashforth:
2237      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2238      to timestep.F
2239    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2240    o re-generate output for highly sensitive test-exp:
2241       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2242    
2243    checkpoint50b_pre
2244    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2245    o corrected CPP option mismatch in exf_Bulk... functions for case
2246      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2247    
2248    checkpoint50a_post
2249    o Bug fix for merging between c50 and KPP.
2250      ikey was passed from thermodynamics to kpp_calc via
2251      common block rather than being recomputed in kpp_calc,
2252      in contradiction with new key itdkey.
2253      New key ikppkey created, and tamc.h headers updated.
2254    
2255    checkpoint50
2256    - 2nd step of merge with ecco-branch:
2257      merge changes in ecco-branch back into main trunk
2258    - bug fix in find_alpha
2259    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2260    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2261    - merged some sliced AD support routines
2262    
2263    checkpoint49
2264    merged from ecco-branch:
2265    o exf:
2266      - Enable initialisation of forcing fields to constant
2267        (runtime) values.
2268      - in exf_getffields.F
2269        Reduce i-/j-loop to interior domain, discarding overlaps.
2270        That also fixes wrong TAF-key computations for key_1, key_2
2271        with bulf formulae.
2272      - exf_init.F modify #ifdef for exf_init_evap
2273      - exf_getffieldrec.F, ctrl_getrec.F
2274        The following INT-usages are not safe:
2275          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2276          fldcount = int(fldsecs/fldperiod) + 1
2277        and were modified.
2278    o autodiff: checkpoint_lev...
2279      - updated storing for bulk formulae (some arrays were missing)
2280      - added state for seaice package
2281      - synchronized with main branch
2282    o DIVA:
2283      Modif.s in
2284      - the_main_loop.F
2285      - the_model_main.F
2286      and added cost_final_restore.F cost_final_store.F
2287      o With these changes, it is possible to fully separate
2288        the first forward run to compute the cost function (mdthe_main_loop)
2289        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2290        into separate model executions.
2291        This enables better tuning of DIVA to given queue sizes.
2292      o Loss of cost function value in consecutive DIVA runs is
2293        fixed by storing to 'costfinal' file.
2294      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2295        beginning/end of adjoint integration is accounted for.
2296      The current changes apply to TAF-1.4.26.
2297      TAF has one remaining bug, requiring one manual change
2298      (see MITgcm manual).
2299    o cal: synchronized between MAIN and ecco-branch
2300    
2301    checkpoint48i_post
2302    o Changes to restore differentiability of code w.r.t. previous tag
2303      (mostly adding new routines to make list and replacing
2304      pressure by totPhiHyd).
2305    o Updated and merged grdchk package
2306      - has both ADM and TLM checks
2307      - works for single- and multi-proc.
2308      - output cleaned
2309      - worked successfully for parallel DIVA
2310    o genmake:
2311      - Adding -platform=SP4
2312      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2313    o Modif. for DIVA:
2314      ctrl_unpack should not be called in intermediate DIVA interval.
2315      (similar thing would apply for active files such as
2316      tbar, sbar, psbar, which should not be reinitialised;
2317      only relevant for ecco-branch)
2318    
2319    checkpoint48h_post
2320    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2321    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2322    o Added SEAICE_initialHEFF to pkg/seaice
2323    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2324    
2325    checkpoint48g_post
2326    --- EOS:
2327    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2328      store total Potential in totPhyHyd for diagnostics & EOS.
2329    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2330    --- Pressure/geopotential gradient:
2331    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2332    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2333      ( changes results of global_ocean_pressure )
2334    o NLFS + z-coord.: add eta*Rho' contribution.
2335    o accurate phiHyd when using interface-W at the middle between 2 centers
2336     ( changes results of ideal_2D_oce )
2337    o includes r* 2nd term in potential gradient.
2338    
2339    checkpoint48f_post
2340    Merging from release1_p12:
2341    o Modifications for using pkg/exf with pkg/seaice
2342      - improved description of the various forcing configurations
2343      - added basic radiation bulk formulae to pkg/exf
2344      - units/sign fix for evap computation in exf_getffields.F
2345      - updated verification/global_with_exf/results/output.txt
2346    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2347      (SBO) core products, including oceanic mass, center-of-mass,
2348      angular, and bottom pressure (see pkg/sbo/README.sbo).
2349    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2350      to avoid negative values in shallow regions.
2351      - updated verification/natl_box/results/output.txt
2352      - updated verification/lab_sea/results/output.txt
2353    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2354    o Added useSingleCpuIO option (see PARAMS.h).
2355    o Updated useSingleCpuIO option in mdsio_writefield.F to
2356      work with multi-field files, e.g., for single-file pickup.
2357    o pkg/seaice:
2358      - bug fix in growth.F: QNET for no shortwave case
2359      - added HeffFile for specifying initial sea-ice thickness
2360      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2361    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2362      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2363    o pkg/seaice:
2364      - adjoint-friendly modifications
2365      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2366    
2367    checkpoint48e_post
2368    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2369    o dynamics: change definition of computational domain & adapt mom_fluxform
2370      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2371    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2372        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2373        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2374        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2375        inverted_barometer solid-body.cs-32x32x1
2376      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2377    
2378    checkpoint48d_post
2379    o in preparation for r*:
2380     a) use pre-computed gradient of hydrostatic potential:
2381        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2382     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2383        => affects results of glob_oce_pressure (different truncation error)  
2384      update output.txt of ideal_2D_oce & global_ocean_pressure
2385    
2386    checkpoint48d_pre
2387    o in preparation for r*:
2388      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2389      pass the 2 comp. of the grad. as arguments to momentum S/R.
2390      but for the moment, only used if it does not change the results.
2391    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2392    
2393    checkpoint48c_post
2394    Modifications in treatment of initial flux forcing controls
2395    to avoid extra storing of flux fields.
2396    
2397    checkpoint48c_pre
2398    o Added tidal_basin_2d experiment (currently 1D!)
2399    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2400    
2401    checkpoint48b_post
2402    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2403     (modification to pressure gradient not yet implemented)
2404    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2405      (for U & V) that are used for vertical advection of momentum.
2406    
2407    checkpoint48a_post
2408    o In preparation for r*, use temp. array to compute vertical transport
2409       in flux-form momentum pkg. => change results of few test-exp.
2410      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2411                        lab_sea, natl_box & plume_on_slope
2412    
2413    checkpoint48
2414    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2415    
2416    checkpoint47j_post
2417    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2418    o moved adexch from forward_step to addummy_in_stepping
2419    o added exch in ctrl_map_...
2420    o aveFreq.=0. at end of cost_final to avoid overwrite in
2421      reverse checkpointing loop
2422    o Yet more changes in gmredi:
2423      * adgmredi_calc_tensor
2424        avoiding all recomputation of gmredi_slope_limit
2425      * adgmredi_x/y/rtransport
2426        added flag for excessive storing to avoid recomp. of
2427        u/v/rtans, dTdx/y/z
2428        -> this is not really necessary and very memory-consuming
2429      * adgmredi_slope_psi:
2430        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2431      * gmredi_slope_limit
2432        re-activated full calculation of taperfct for case 'ac02'
2433    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2434    
2435    checkpoint47i_post
2436    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2437    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2438      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2439    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2440    o gmredi: fix few bugs.
2441    
2442    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2443    This will be a good checkpoint to plug into the ecco-branch.
2444    o few modif.'s to get latest version adjointed
2445      (mainly kick out code in ini_linear_phisurf)
2446    o modif's to run adjoint with exactConserv
2447    o case GM_BOLUS_ADVEC should be cleaned
2448      S/R gmredi_slope_psi should be cleaned
2449    o verification/carbon now has exactConserv=.TRUE.
2450    
2451    checkpoint47g_post
2452    o time-average AIM output: becomes independent from statvars time-average
2453      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2454    o After TAF bug fix:
2455      Tested adjoint of gmredi package.
2456      Tests were done with checkpoint47 rather than with latest
2457      checkpoint47f_post since the latter is broken for the adjoint
2458      verification/carbon/ contains both ADM and TLM gradient checks.
2459    Here they are, before they get changed/lost/stolen.
2460    Mostly modif.'s to fix numerical sensitivities.
2461    Gradient checks OK for
2462    - GM_taper_scheme:
2463      * clipping
2464      * ac02
2465      * linear
2466      * glw91
2467      * dm95
2468      * ldd97
2469    - GMREDI_OPTIONS:
2470      * GM_VISBECK_VARIABLE_K
2471      * GM_NON_UNITY_DIAGONAL
2472      * GM_EXTRA_DIAGONAL
2473      * GM_BOLUS_ADVEC
2474    in conjunction with data.gmredi parameters to be checked in
2475    in a few minutes under verification/carbon/code/
2476    
2477    checkpoint47f_post
2478    Merging from release1_p10:
2479    o modifications for using pkg/exf with pkg/seaice
2480      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2481        and SEAICE_EXTERNAL_FLUXES
2482      - pkg/exf CPP options EXF_READ_EVAP and
2483        EXF_NO_BULK_COMPUTATIONS
2484      - usage examples are Experiments 8 and 9 in
2485        verification/lab_sea/README
2486      - verification/lab_sea default experiment now uses
2487        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2488    
2489    checkpoint47e_post
2490    o created a tag prior to creating a branch
2491    
2492    checkpoint47d_post
2493    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2494      at the bottom boundary had an erroneous half slip boundary condition
2495    o added bottom drag and no slip boundary condition capabilities to
2496      oceanic pressure coordinates code
2497    o added new verification experiment global_ocean_pressure, this experiment is
2498      also described in the tutorial section of the manual
2499    checkpoint47d_pre
2500    
2501    checkpoint47c_post
2502    o Added a verification experiment for a global cubed-sphere ocean run
2503      -  verification/global_ocean.cubed32x32x30
2504      -  uses pkg/therm_seaice and pkg/bulk_forcing
2505    
2506    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2507    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2508      when using P-coordinate; only implemented for atmospheric config.
2509    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2510      NOTES: requires option NONLIN_FRSURF to be "#define".
2511    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2512    
2513    checkpoint47b_post
2514    Merging from release1_p9:
2515    o pkg/seaice
2516      - removed GOTO's and added taf directives
2517      - double precision constants to reduce the g77 (Linux)
2518        to F77 (SGI) differences reported in release1_p8
2519    o tools/genmake
2520      - added SGI options
2521    o verification/testscript
2522      - updated to that of checkpoint47a_post
2523    o verification/global_ocean.90x40x15/input/eedata
2524      - modified for SGI f77 compatibility
2525    o verification/lab_sea
2526      - added description of sea-ice model
2527      - added missing matlab routines
2528      - added test of thermodynamics parallelization
2529    
2530    checkpoint47a_post
2531    o new pkg: aim_v23
2532     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2533       for now, keep the same surface forcing as before.
2534     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2535     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2536     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2537    o add diagnostic of surface correction term in monitor output
2538    
2539    o bulk_force and therm_seaice
2540    - Two packages:  bulk_force (Bulk forcing)
2541      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2542    - Earlier integration from Stephaine Dutkiewicz
2543      and Patrick Heimbach.
2544    - Two ifdef statements for compile time,
2545       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2546    
2547    checkpoint47
2548    differentiable version of checkpoint46n_post
2549    o bug fix in quasihydrostaticterms
2550    o * "clean" adjoint code (in terms of extensive recomputations)
2551        can now be obtained for all GMREDI options (i.e. for
2552        - GM_VISBECK_VARIABLE_K
2553        - GM_NON_UNITY_DIAGONAL
2554        - GM_EXTRA_DIAGONAL
2555        - GM_BOLUS_ADVEC )
2556      * However, wrong gradient check problem remains unsolved.
2557      * New CPP options have been introduced for different
2558        tapering schemes
2559    o external_fields_load now part of differentiation list
2560    o pressure needs multiple storing;
2561      would be nice to have store_pressure at beginning or
2562      end of forward_step, e.g. by having phiHyd global (5-dim.)
2563      (NB: pressure is needed for certain cases in find_rho,
2564      which is also invoked through convective_adjustment).
2565    o recomputations in find_rho for cases
2566     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2567    o #define ATMOSPHERIC_LOADING should be differentiable
2568    o ini_forcing shifted to begining of initialise_varia
2569    o Incorporating QNVS line search routines into MITgcm
2570      (this is separate code, and therefore not under pkg)
2571      lsopt/, optim/
2572    o Updated verification/carbon/
2573      - #define GM_VISBECK_VARIABLE_K
2574      - GM_taper_scheme    = 'ldd97'    
2575    
2576    checkpoint46n_post
2577    Merging from release1_p8:
2578    o verification/natl_box:
2579      updating new external_fields_load routine
2580    o New package: pkg/seaice
2581      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2582      The sea-ice code is based on Hibler (1979-1980).
2583      Two sea-ice dynamic solvers, ADI and LSR, are included.
2584      In addition to computing prognostic sea-ice variables and diagnosing
2585      the forcing/external data fields that drive the ocean model,
2586      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2587      The implied surface heat flux is then stored in variable
2588      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2589      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2590      non-local transport term.  Because this call precedes model
2591      thermodynamics, temperature under sea-ice may not be "exactly" at
2592      the freezing point by the time theta is dumped or time-averaged.
2593      N.B.: fairly large differences in accuracy occur across
2594            different platforms/compilers; comparison between
2595            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2596            generated output gives:
2597       T           S           U           V
2598      C D M    c        m  s        m  s        m  s        m  s
2599      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2600      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2601      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2602    
2603      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2604    o GAD:
2605      - generated new common blocks to account for call of
2606        same gad routines with differing traceridentities
2607        (needed to modify tracerIdentity indices in GAD.h)
2608      - generated separate common blocks for case useCubedSphereExchange
2609        (Department of Futurology)
2610      - parameter lists to gmredi_?transport: added tracerIdentity
2611      - added new key indices to tamc.h
2612    o external_fields_load:
2613      - added this routine to TAF list
2614      - needed to make some common blocks global and additional storing
2615        along the same lines as exf package (checkpoint_lev?_directives.h)
2616    o exf:
2617      updated external forcing package
2618      - bug fixes carried over from ecco-branch
2619        (missing OBCS_OPTIONS.h in two routines)
2620      - enable easy to use "no forcing".
2621      - added exf I/O for atmospheric loading
2622      - added exf I/O for runoff data
2623      - transfered scaling between exf <-> MITgcm to exf namelist
2624    o Adding new verification experiment global_with_exf.
2625      This verification experiment is almost identical to the
2626      global_ocean.90x40x15 experiment, except that it uses
2627      the exf (and cal) package instead of the
2628      external_fields_load routine (cf README file).
2629    
2630    checkpoint46m_post
2631    o modified testscript to return -- when there are no lines of "%MON" output
2632    o added new flag "quasiHydrostatic" for QH mode
2633      and new routine quasihydrostaticterms()
2634    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2635      New routine: mom_u_coriolis_nh()
2636    o fixed sign of non-hydrostatic metric terms in u and v equations.
2637      Depend on correct sign of gravitySign.
2638    o added work.pc* to .cvsignore in aim directories using ifc
2639    o introduced flag for controllin non-hydrostatic metric terms
2640    o removed gravitySign from PARM04
2641    o switched to g77/ifc from pgf77 in aim experiments
2642    
2643    checkpoint46l_post
2644    o made convective adjustment work with pressure coordinates:
2645     - changed the direction of k-loop in convective_adjustment.F for the
2646       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2647     - adjusted the reference pressure k-index in convective_adjustment.F
2648     - adjusted the convection condition in convect.F (in analogy to
2649       calc_ivdc.F)
2650     - convective_adjustment no longer computes anything on the halos
2651     - removed the warnings about negative salinity from find_rho.F and
2652       find_alpha.F; instead the new routine look_for_neg_salinity, called
2653       at the beginning of find_rho, find_alpha, and find_beta, does a
2654       check of the entire slice, if CPP-option
2655       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2656    checkpoint46l_pre
2657    
2658    checkpoint46k_post
2659    o fixed the verification/global_ocean.90x40x15 experiment:
2660     - new bathymetry (the world according to A., JMC, and M.)
2661     - new initial fields and forcing fields (*.bin files)
2662     - new POLY3.COEFFS (for the next release one should switch to a full
2663       equation of state: JMD95P or MDJWF)
2664     - fixed several errors and redundancies in the data file
2665     - experiment uses looped cells
2666     - added matlab directory with diagnostic scripts for plotting of output
2667    
2668    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2669     - read AIM physics parameters from a file (data.aimphys)
2670     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2671    
2672    checkpoint46j_post
2673    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2674    o move wVel computation at the end of the time step, in S/R integr_continuity
2675    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2676    o update timeave pkg for wVel diagnostic.
2677    checkpoint46j_pre
2678    
2679    checkpoint46i_post
2680    o Clean up AIM package (and keep the results unchanged):
2681      include CPP_OPTION and use IMPLICT NONE in all routines ;
2682      declare all the variables _RL ; use _d 0 for all numerical constants.
2683      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2684    
2685    checkpoint46h_post
2686    o cleaned up the use of rhoNil and rhoConst.
2687      - rhoNil should only appear in the LINEAR equation of state, everywhere
2688        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2689        and the dynamical equations are all divided by rhoConst
2690    o introduced new parameter rhoConstFresh, a reference density of fresh
2691      water, to remove the fresh water flux's dependence on rhoNil. The default
2692      value is 999.8 kg/m^3
2693    o cleanup up external_forcing.F and external_forcing_surf.F
2694      - can now be used by both OCEANIC and OCEANICP
2695    checkpoint46h_pre
2696    
2697     Added code to convert surface volume flux (fresh water) into
2698     a mass flux when using P coordinates in the ocean (OCEANICP).
2699     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2700    
2701    checkpoint46g_post
2702    o Include a new diagnostic variable phiHydLow for the ocean model
2703      - in z-coordinates, it is the bottom pressure anomaly
2704      - in p-coordinates, it is the sea surface elevation
2705      - in both cases, these variable have global drift, reflecting the mass
2706        drift in z-coordinates and the volume drift in p-coordinates
2707      - included time averaging for phiHydLow, be aware of the drift!
2708    o depth-dependent computation of Bo_surf for pressure coordinates
2709      in the ocean (buoyancyRelation='OCEANICP')
2710      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2711        Theta, Salinity, and Pressure in the parameter list. This routine is
2712        presently contained in find_rho.F. This routine does not give the
2713        correct density for 'POLY3', which would be a z-dependent reference
2714        density.
2715    o cleaned up find_rho
2716      - removed obsolete 'eqn' from the parameter list.
2717    o added two new verification experiments: gop and goz
2718      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2719    checkpoint46g_pre
2720    
2721    checkpoint46f_post
2722    o Enable tangent linear (forward mode) gradient checks:
2723      - extended active file handling to g_... files
2724      - added TANGENT_SIMULATION to theSimulationMode
2725      - extended grdchk package accordingly
2726    o added tangent linear setup in verification/carbon/code_ftl
2727    o added adjoint setup in verification/front_relax/code_ad
2728    
2729    checkpoint46e_post
2730    o Added new equation of state -> MDJWF
2731      - EOS of McDougall et al., 2002, JAOT, submitted
2732      - caveat: the equation of state is only valid for a smaller (more
2733        realistic?) range of values than JMD95P/Z and UNESCO
2734      - added masks to the calculation of pressure in store_pressure
2735      - added more check values for density in check_eos (ini_eos.F), some of
2736        the old check values are out of the range of the MDJWF-eos, so don't
2737        expect perfect matches for those
2738    checkpoint46e_pre
2739    
2740    checkpoint46d_post
2741    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2742      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2743      case of pressure coordinates. eosType='JMD95Z' in
2744      combination with buoyancyRelation='OCEANICP' now causes an error.
2745    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2746      in find_alpha/beta.
2747    checkpoint46d_pre
2748    
2749    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2750      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2751    
2752    checkpoint46c_post
2753    o Changes necessary for ocean in p-coordinates
2754     -  Added new buoyancy relation = 'OCEANICP'
2755     -  Added new parameters = gravitySign (this used to be contained inside
2756        the factor dRdZ which I added when we first switched to R coordinates).
2757     X GM/Redi is not compatible (yet)
2758     X bottom drag and no-slip need to be debugged.
2759    checkpoint46c_pre
2760    
2761    checkpoint46b_post
2762    o Added new equation of state -> JMD95Z and JMD95P
2763      - EOS of Jackett and McDougall, 1995, JAOT
2764      - moved all EOS parameters into EOS.h
2765      - new routines ini_eos.F, store_pressure.F
2766    o Added UNESCO EOS, but not recommended because it requires
2767      in-situ temperature (see JMD95)
2768    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2769      unesco.f to be used with POLY3
2770    checkpoint46b_pre
2771    
2772    checkpoint46a_post
2773    o Added (atmospheric) pressure loading
2774      - new field in FFIELDS.h, etc...
2775      - new cpp flag ATMOSPHERIC_LOADING
2776    o Changed hFacC to _hFacC in calc_phi_hyd.F
2777    o Added SHORTWAVE_HEATING to some files for consistency
2778    checkpoint46a_pre
2779    
2780    checkpoint46
2781    further merges from release1_p5
2782    o new ctrl package
2783      - adopted from ECCO environment to enable optimization
2784      - added Eliassen Palm fluxes to controls
2785    o added Eliassen Palm flux controls to gradient check package
2786    o cost package
2787      - Compatible with new ctrl package
2788      - added Eliassen Palm cost hooks
2789      - modif's of existing cost functions
2790    o Adjoint-related bug fixes in kpp:
2791      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2792      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2793    o autodiff package
2794      - flow directives:
2795        + new for S/R do_the_model_io
2796        + enhanced for S/R checkpoint
2797        + new gmredi.flow
2798      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2799        disable adcommon.h/g_common.h by default.
2800      - fixed problem for adjoint of global_max
2801    o modified verification/carbon/
2802    o New setup for adjoint of global_ocean
2803    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2804    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2805    o incorporated hooks for sponge layer code (external_forcing.F)
2806    
2807    checkpoint45d_post
2808    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2809    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2810      (affects plume_on_slope "cg2d" output)
2811    o add new parameter deltaTfreesurf for free-surface time stepping
2812    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2813    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2814    o change phiMin in exp1 (to agree with documentation)
2815    o add new flags:
2816     - T,S forcing inside/outside Adams-Bashforth
2817     - turn off temp,salt advection and/or forcing
2818     - for each tracer, define internal flag for multiDimAdvection & A-B
2819    o monitor: change definition of KE to check conservation of Energy
2820    
2821    checkpoint45c_post
2822    o Removed f90 comments ("!")
2823    o Modified initialisations to enable exf package for MITgcm
2824      (without invoking ECCO_PACKAGE).
2825    o modifications to gradient check package (Martin Losch)
2826      - enable centered differences
2827      - modified format of standard output
2828    
2829    checkpoint45b_post
2830    o cleaned exchange calls in cg2d
2831    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2832    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2833      to configure barotropic setup (Martin Losch)
2834    o moved some initialisations within bi,bj loop in dynamics
2835      (TAF flow dependency)
2836    o in initialise_varia, moved call packages_init_variables
2837      before convective_adjustment_init
2838      (corresponding adjustment of TAF tape initialisation).
2839    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2840    
2841    checkpoint45a_post
2842    o compute Rho over the whole domain (extend iMin,jMin indices)
2843    o specific exchange for X-slice domain (case Ny=1)
2844    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2845    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2846    
2847    checkpoint44h_post = checkpoint45
2848    o Fix to restore differentiability:
2849      place at which packages_init_variables is called in
2850      initialise_varia is crucial for reverse control flow.
2851    o modifications in GMRedi to enable stable adjoint
2852      (corresponding modif's in thermodynamics, dynamics)
2853    o added missing hook for sponge layer code in external_forcing
2854    o modified test cost functions
2855    o storing in gad_advection (plus removal of write(0,*)!
2856    o missing headers TR1.h added in convective_adjustment routines
2857    o errorMessageUnit set non-equal zero in eeboot
2858      (conflict on some platforms, e.g. IBM SP3)
2859    o modified carbon verif.
2860    
2861    checkpoint44h_pre
2862    o vertical grid option: allow to put the Interface at the middle between
2863      2 cell-centers ; replace delZ in pkg/kpp by drF.
2864    o GM Advective form: Tracers are advected using the residual transport (=
2865      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2866    
2867    checkpoint44g_post
2868    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2869      results) ; ifdef missing in thermodynamics.F
2870    
2871    checkpoint44f_pre,checkpoint44f_post
2872    o added PTRACERS package
2873      This allows an arbitrary number of passive tracers to be integrated
2874      forward simultaneously with the dynamicaly model.
2875      + Implemented so far:
2876        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2877        - I/O and checkpointing
2878        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2879      + Not implemented so far:
2880        - KPP
2881        - OBCS
2882      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2883        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2884        line in data.pkg.
2885      + This package is disabled by default since it increases storage.
2886    
2887    
2888    o testscript: added -cleanup option
2889    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2890                 b) enable to filter 2D fields.
2891    
2892    checkpoint44e_pre,post
2893    o re-wrote convective adjustment to use pre-calculated weights
2894      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2895      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2896      Original calls to convect() still in place.
2897    
2898    chkpt44d_pre,post
2899    o added missing EXCLUDE_MONITOR flags
2900    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2901      (incompatible typ in MIN/MAX expressions caused problems
2902      on IBM SP3)
2903    o in genmake added variable MAKEDEPEND
2904      plus resetting for case SunOS
2905    o added timer_stats.c routine for IBM SP3
2906    o removed variables in dynamics
2907    !!! I forgot to create tag chkpt44d_pre !!!
2908    !!! But chkpt44d_pre = chkpt44c_post    !!!
2909    
2910    o real fresh water flux implemented with non-linear free-surface.
2911    
2912    chkpt44c_pre,post
2913    o few fix (mask in shap_s2, EmPmR in external_field_load,
2914      USE_NATURAL_BCS in solve_for_P);
2915    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2916    
2917    checkpoint44b_pre/_post
2918    o merge of relevant stuff from the ecco-branch:
2919      - genmake: removed $S64 overwrite for case SunOS
2920      - pkg/exf: update and corrections for field swapping and obcs
2921      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2922                  harmonized between ECCO and MITgcm
2923      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2924                      updated checkpointing_lev... lists for obcs
2925      - model/src: minor changes in forward_step, plot_field
2926                   added directive for divided adjoint in the_main_loop
2927      - pkg/mdsio: added mdsio_gl_slice
2928    
2929    o check parameters & config (chkpt44a_pre,post)
2930    o OBC and NonLin_FrSurf.
2931    
2932    checkpoint44
2933    o fix bug in mom_vi_del2uv
2934    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2935    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2936    o update AIM experiments (NCEP input files)
2937    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2938    o added some stuff for AD
2939    
2940    checkpoint43
2941    o added two new advection tests
2942    o added global 4x4 degree ocean test
2943    o added test of H&S94 with free surface on cube
2944    o some final mods for gradient check, adjoint,...
2945    
2946    checkpoint42
2947      Fixed AD-related problems:
2948    o Store directives up-to-date with re-arranged Adams-Bashforth
2949      (mainly thermodynamics.F)
2950    o New store directives for multi-dim. advection schemes
2951      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2952      * new common block and key passkey
2953      (mainly gad_advection.F)
2954    o Modified store directives for split of dynamics/thermodynamics
2955      for the case ALLOW_KPP
2956    o Cleaned argument list for timestep_tracer.F
2957    
2958    checkpoint41
2959    o re-formatted/added comments in prologues of key subroutines
2960      to work with protex
2961    
2962    checkpoint40
2963    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2964    o added FLT (floats) package from Arne along with demo. experiment
2965    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2966      implementation of forward-in-time forcing terms
2967    o more mods for non-linear free-surface including new variable
2968    o modified multi-dim method to work on cube
2969    o bug fix in KPP (from DM)
2970    
2971    checkpoint40pre9
2972    o added DST advection schemes
2973    o fix MPI bug on SGI's
2974    o modifications for non-linear free-surface
2975    o fixed conditionals for fixed flow/passive tracer only mode
2976    o added tension/strain form of stress tensor
2977    o changes to commenting of arguments for TAF/TAMC
2978    o added/updated many matlab scripts
2979    o added multi-dimensional advection method for tracers
2980      
2981    checkpoint40pre8
2982    o new package rw/
2983      Added method for dumping intermediate local arrays:
2984      mdsio_writetile - same as mdsio_writefield except works from inside
2985                        bi,bj loop
2986      mdsio_writelocal - same as mdsio_writetile except works for local
2987                         arrays
2988      write_local_r? - higher-level wrapper for mdsio_writelocal
2989      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2990      Example given at end of mom_vecinv.F that dumps some local arrays.
2991    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2992      control flux-form versus vector invariant code.
2993      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2994      or genmake -DISABLE ...
2995    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2996      (additional storing is now needed for case vecinv;
2997      currently nothing implemented to switch this storing off
2998      in case fluxform is used since no CPP flag available).
2999    
3000    checkpoint40pre7
3001    o bug fix in dynamics.F
3002      calc_viscosity called before k=1,Nr loop.
3003    o added some #ifdef's ALLOW_PASSIVE_TRACER
3004    o cleaned initialisations in ctrl_map_ini
3005      related to TAF
3006    
3007    checkpoint40pre6
3008    o split dynamics into thermodynamics & dynamics
3009    o corresponding split of calc_diffusivity into
3010      calc_diffusivity, calc_viscosity
3011      (kpp_calc_diff, kpp_calc_visc).
3012    o Added diffkr, kapgm to control variables
3013    o bug fix in gmredi_slope_limit for ldd97
3014    
3015    checkpoint40pre5
3016    o proper initialization of Adams-Bashforth time stepping
3017      + uses forward step for very first step of model (iter=0)
3018    o re-generated *all* output since almost all output is modified by this
3019      change (sorry but we've been putting this one off for about 2 years)
3020      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3021        *not* regenerated since they are already out of date and I don't
3022        want to create the impression that they are suddenly working.
3023    o removed KAP stuff for DEC's
3024    o modified/added many .cvsignore files in */code and */input
3025    o added new expt "solid-body.cs-32x32x1"
3026      + this uses an alternative form of ini_curvilinear_grid.F which
3027        is not necessarily any better than the current one...
3028    
3029    checkpoint40pre4
3030    o added re-initialisations of utrans,vtrans,rtrans in
3031      calc_common_factors which are crucial for TAF.
3032    o extended iMin,jMin range for calc_common_factors,
3033      calc_diffusivity
3034    o added option ALLOW_PASSIVE_TRACER
3035    o a few minor updates and fixes
3036    
3037    checkpoint40pre3
3038    o created calc_gtr1.F for gad package
3039    o split the_main_loop and re-introduced forward_step
3040    o some recomputations of nIter0 for TAMC
3041    
3042    checkpoint40pre2
3043    o Updated to latest branch of AJA, JMC
3044    o Added gradient check package
3045    o Added routines for passive tracer handling
3046    o Added carbon sequestration sensitivity experiment
3047    
3048    checkpoint39
3049     o Modifications and fixes to support TAMC
3050       (mainly missing or wrong directives)
3051     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3052       in addummy_in_stepping
3053     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3054     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3055     o Included following packages:
3056       cal: calendar
3057       exf: external forcing
3058       ecco: essential routines to control use of cal, exf
3059             (NB: this is not the full ECCO environment)
3060     o disabled some packages by default in genmake
3061    
3062    checkpoint38
3063     o see notes_c37_adj.txt
3064     o corrected wrong layer index in external_forcing_t
3065     o replaced the_main_loop/forward_step by the_main_loop
3066     o removed forceoutput from write_state
3067       (replaced criteria for initial/final state)
3068     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3069    
3070    checkpoint37
3071     o mdsio.F routine split and packaged in pkg/mdsio
3072       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3073        used unless genmake -disable=mdsio)
3074     o allow a more precise surface-geopotential gradient for the atmosphere
3075       taking into account the change in space of Alpha (=1/rho) at the surface.
3076     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3077       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3078     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3079       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3080       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3081     o Time-Average diagnostics defined as a pseudo package "timeave".
3082     o pickup files : old pickup (before c35) did not work with new code (c35
3083       and after) unless activating 2 commented lines in initialise-varia.
3084     o Non-Hydrostatic pickup file Pb fixed.
3085     o bug with Rigid-lid version (since c35) fixed.  
3086    
3087    checkpoint36
3088     o implement Crank-Nickelson barotropic time-stepping
3089     o recover Time-Average diagnostics
3090     o fix Pb in checkpoint (PR#19)
3091     o AIM become a standard package ; clean unused CPP_kees
3092    
3093    checkpoint35
3094     o subtantial rewrite of dynamics.f
3095     o allows staggered time-stepping
3096     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3097     o added bottom drag (linear + quadratic)
3098    
3099    checkpoint34
3100     o Modified exchange routines for correct reverse simulation.
3101     o Added verification output to comply with bug fix in impldiff.F
3102       as of c33 (exp2, natl_box).
3103     o Corrected store directives in dynamics.F
3104     o Corrected array boundaries in impldiff.F
3105     o Corrected array dimensions in gmredi.
3106       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3107     o Added routine GLOBAL_SUM_INT to global_sum.F
3108     o Added mdsio_gl.F for ECCO purposes.
3109    
3110    checkpoint33
3111     o Fixed bug in lower BC in impldiff.F
3112     o Fixed confusion about units of forcing arrays in FFIELDS.h
3113       namely Fu,Fv,Qnet,Qsw,EmPmR:
3114       - Removed verification/natl_box/code/external_fields_scale.F
3115         (did not differ from that in model/src)
3116       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3117         (see FFIELDS.h for description)
3118       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3119         kpp_calc.F and kpp_transport_t.F
3120       - Removed model/src/external_fields_scale.F and calls to it
3121       - verification/natl_box uses flux data with "atmospheric" sign so
3122         a special version of external_fields_load.F is used to
3123         change the data as it's read in. This way, the arrays
3124         have the right units and signs at all times tha a user could
3125         possibly use them.
3126     o Corrected genmake to delete a temporary file during configuration
3127    
3128    checkpoint32
3129     o Scaling of forcing fields moved from external_forcing.F to
3130       external_fields_scale.F, called directly after loading fields.
3131     o Surface relaxation terms added to surface tendency fields in
3132       extra subroutine.
3133     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3134       fields.
3135     o Changes in GMRedi to comply with packaging structure.
3136     o Modifications and bug fixes in KPP package.
3137     o Verification experiment for KPP added (verification/nat_box/)
3138    
3139    checkpoint31
3140     o Packages interface brought in line with defined standard
3141       -> new routines packages_...F
3142       -> changes in initialise_fixed.F, initialise_varia.F
3143       -> enables initialisation interface for ECCO package
3144     o Rescaling of external forcing fields immediately after read
3145       (removed from external_forcing.F)
3146       -> new: surface_fields_scale.F
3147       -> affects ini_foorcing.F, external_fields_load.F
3148     o Computation of surface tendencies before tendency updates.
3149       -> new: external_forcing_surf.F
3150     o Change of variable names useGMRedi, useKPP, useECCO
3151     o Further changes in dynamics.F, impldiff.F for TAMC
3152     o Tested for experiments 0, 2, 4.
3153       - not yet tested for GMRedi.
3154       - not yet tested for KPP.
3155    
3156    checkpoint30
3157     o Updates for OBCs
3158     o New experiment for test OBCs (internal_wave)
3159     o New output.txt in verification/exp4/results/
3160     o Updates for KPP: calculation of viscosity corrected, new variables
3161       kpp_dumpFreq and kpp_taveFreq
3162     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3163       and entry for T90 in genmake
3164    
3165    checkpoint29
3166     o packaged KPP and GM/Redi
3167    
3168    checkpoint28
3169     o Corrected initialization of hFacMin for difference vertical coordinates
3170     o Modified calculation of partial cell thickness to more robust algorithm
3171     o config_summary.F: replaced write_1D_... by write_0D_...
3172       read_write.F: added subroutines write_0D_...
3173     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3174       included some initialisations required for TAMC.
3175     o routine calc_isoslopes: modified sqrt computation to make it
3176       differentiable for zero argument.
3177     o routines dynamics, impldiff:
3178       included store directives and tape key computations required for TAMC.
3179     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3180    
3181    checkpoint27
3182     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3183       formulation works properly with variable resolution.
3184     o restructured the calling tree between the_model_main() and dynamics()
3185     o split initialise() into initialise_fixed() and initialise_varia()
3186     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3187       in new routine ini_psurf()
3188    
3189    checkpoint26
3190     o moved some #ifdef in optional routines to encompass everything
3191       except the argument declarations. This was using up some memory.
3192     o fixed macros like _ADT to work with both versions of Linux cpp
3193     o cleaned up some unused and uninitialized variables
3194       (helps when debugging with strict compile options)
3195     o split up CPP_EEOPTIONS.h into options and macros
3196       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3197     o patch for 2 processor JAM mode
3198    
3199    checkpoint25
3200     o updates for OBCs and NH
3201     o dramatically reduced memory usage
3202     o added "JAM" routines for use on Artic network
3203     o parameterization of convection by implicit vertical diffusion
3204     o added a diagnostic of convective index
3205     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3206       (this is was partly for OBCs and NH but also in anticipation of
3207        an explicit free-surface option)
3208     o initial state input files for U and V
3209    
3210    checkpoint24
3211     o Removed some spurious "REAL"s
3212     o Updated KPP to latest version from JPL
3213     o Added a COS(latitude) in horizontal viscosity
3214    
3215    checkpoint23
3216     o Added del^4 diffusion for salt and temperature
3217     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3218    
3219    checkpoint22
3220     o Made many small changes: implicit none, format(i5), etc...
3221     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3222    
3223    checkpoint21
3224     o Introduced new I/O package that supports direct-access records (mdsio.F)
3225     o Split-up mid-level I/O routines
3226     o Updated input data for experiments 0,1,2,4 and 5
3227     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3228    
3229    checkpoint20
3230     o Tidied up open-boundaries some more
3231     o Added non-hydrostatic code
3232     o Fixed some input data
3233     o Modified MPI start-up to work in "coupled" context.
3234    
3235    checkpoint19
3236     o Tidied up directory structure for verification experiments.
3237     o Added new code for open boundaries.
3238     o Corrected advective terms near boundaries.
3239     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3240     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3241     o Split default parameters out of ini_parms.F into set_defaults.F.
3242    
3243    checkpoint18
3244     o Further changes for optional code generation with
3245       CPP - ugh!
3246    
3247    checkpoint17
3248     o Beginning to incorporating modularity
3249       for supporting atmos. and ocean configs.
3250     o Small changes for TAMC complinace
3251     o New ultra simple test case. Barotropic box
3252       configuration "exp0".
3253    
3254    checkpoint16
3255     o Minor changes to exchange routines to support
3256       accumulation in reverse mode. Adjoint of an
3257       assignment is an addition.
3258     o Changes to support compilation by TAMC (LR(1)
3259       syntax) and by g77 under Linux ( 72 character
3260       limit ).
3261    
3262  checkpoint15  checkpoint15
3263   Rewrote exchange routines to allow   Rewrote exchange routines to allow
3264   o General tile <-> tile connectivity.   o General tile <-> tile connectivity.

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