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revision 1.55 by heimbach, Fri Jan 18 22:13:27 2002 UTC revision 1.770 by jmc, Thu Feb 8 00:12:37 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    checkpoint58v_post
8    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
9      useDynP_inEos_Zc tested.
10    o pkg/exf: changes to properly interpolate/mask/scale initial fields
11    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
12      and portions thereof.  See read_cs.txt for description and examples.
13    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
14      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
15      following the great-circle arc between those 2 points.
16    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
17      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
18    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
19     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
20     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
21     - still needs work (not working with some options ; efficiency to improve)
22       and serious testing.
23     - use this scheme for temperature & salinity in 2 advection test exp.:
24       advect_xy & advect_xz, respectively.
25    
26    checkpoint58u_post
27    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
28    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
29    o testreport: add option "-skipdir" to skip some test.
30    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
31      momentum calculation.
32    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
33    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
34      remove checkpoint.F and the_correction_step.F (no longer used);
35      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
36    o add option (linFSConserveTr) to correct for tracer source/sink due to
37      Linear Free surface
38    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
39    o pkg/thsice: fix reading mnc-pickups
40    
41    checkpoint58t_post
42    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
43    o pkg/mdsio:
44     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
45       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
46       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
47     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
48     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
49       either MDS_READ_FIELD or MDS_WRITE_FIELD )
50     - new S/R (to replace MDSWRITEMETA), which allows to write more
51       informations (variable names, time ...) to meta files.
52     - modify rdmds.m to give back the meta file content.
53    o pkg/diagnostics: change vertical interpolation to be safer, and more
54       flexible (define p-levels to interpolate to in data.diagnostics);
55      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
56       diagnostic pointer.
57    o pkg/seaice: more cleaning up of seaice_growth, added many comments
58    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
59    o fix multi-category seaice:
60     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
61       SEAICE_MULTICATEGORY
62     - fix short wave heat flux
63    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
64       and allow to use EVP solver. Change forward lab_sea: test both EVP
65       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
66    o Initial check-in of lab_sea adjoint
67      (very similar to natl_box_adjoint/code_seaice)
68      * used C-grid and EVP solver
69      * used KPP, GM/Redi
70      * uses inAdExact=.TRUE.
71      * gradient checks fail for both ADM and TLM
72        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
73        f.d. gradients actually seem more problematic than ADM, TLM gradients;
74        issue is related to forward mismatch between g77 an ifort
75    o pkg/seaice: overhaul of thermodynamics
76     - growth.F and groatb.F are replaced by new routine seaice_growth.F
77     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
78     - move a few global fields out of SEAICE.h into seaice_growth.F and
79       make them 2D (FICE/QNETO/ ...)
80     - remove FO (it is the same as QNETO)
81     - introduce a few local fields to avoid modifying external fields such
82       as atemp, etc.
83    
84    checkpoint58s_post
85    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
86      changed exf_set_gen.F so that
87        genperiod=0 means input file is one time-constant field and
88        genperiod=-12 means input file contains 12 monthly means
89    o CG2D: use pre-computed solver main-diagonal (stored in common block);
90      this affects truncation error ; generate new output file for exp. which
91      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
92        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
93        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
94        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
95        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
96        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
97    o start implementation of deep-atmosphere and anelastic formulation
98    o verification: remove 2nd copy of input files and use script "prepare_run"
99      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
100    o mom_common/vecinv/fluxform: fix a few initialisation isssues
101    o profiles: fix for multithreaded case
102    
103    o diagnostics: rename few diags:
104      s/'PRESSURE'/'RCENTER '/g
105      s/'TICE    '/'oceFreez'/g
106      s/'TAUX    '/'oceTAUX '/g
107      s/'TAUY    '/'oceTAUY '/g
108      s/'SWFLUX  '/'oceQsw  '/g
109      s/DIFx/DFxE/g
110      s/DIFy/DFyE/g
111      and add few ocean-forcing diagnostics:
112      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
113    o modifications to pkg/seaice/growth.F and budget.F, which change results of
114      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
115      as actual snow thickness.  It now refers everywhere to effective snow
116      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
117    
118    checkpoint58r_post
119    o modifications to pkg/seaice/growth.F, which change results of
120      lab_sea experiment: fixes pertain to melting snow over open water, to
121      masking EVAP under sea ice, and to using the correct AREA variable for
122      computations of EVAP, PRECIP, HSNOW, and GHEFF
123    o add ability to read bathy, salt, and theta using MNC (off by def)
124    o add flooding algorithm and advection of HSNOW for pkg/seaice;
125      both are turned off by default and do no change any results
126    o seaice advection with pkg/thsice: a step toward the use of non-linear
127      advection scheme, but #ifdef or commented out for now (requires more EXCH).
128    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
129      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
130      in natl_box (affects results @ truncation level: update output.txt)
131    o multi-threading and IO:
132      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
133      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
134        (needed to work with SingleCpuIO): tested in all verif. exp.
135    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
136      affects the results (but none of the verification test uses this scheme).
137    o Adding some pkg/diagnostics capability to pkg/seaice
138      (will certainly be subject to changes)
139    o ctrl: adding new control variables:
140      lwflux, lwdown, evap, snowprecip, apressure, runoff
141    
142    checkpoint58q_post
143    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
144      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
145      high_res_cube configuration by 4% on Columbia.
146    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
147      add (in global_with_exf/code) a version of EXF_INTERP_READ without
148      dynamical allocation (seems to work in multi-threaded).
149    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
150      single CPU io) so that TAF does not have to see EESUPPORT.h
151    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
152    
153    checkpoint58p_post
154    o obcs: stop if obcs is used with useCDscheme = .true.
155    o shelfice:
156     - fix a sign error so that no slip at shelfice interface works
157     - remove stop for combination non-hydrostatic code and shelfice. That does
158       not mean, that the results are correct, but at least they are numerically
159       stable
160    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
161    o added adjoint exch routined for all exch*3d* routines
162      and updated flow directives
163    
164    checkpoint58o_post
165    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
166      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
167    o change controling S/R for writing pickup file (new S/R do_write_pickup)
168      and clean-up reading/writing of pickup files.
169    o fix local version of read/write pickup (NH part) in rotating_tank/code
170    o simplify EXCH interface:
171     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
172     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
173    o added the regrid package
174    o shelfice:
175     - add a simple boundary layer scheme to reduce noise
176     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
177    
178    checkpoint58n_post
179    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
180       local variable (not in common block).
181    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
182      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
183      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
184        to work with SingleCpuIO.
185    o add "_d 0" to real constant of pkg/cfc subroutines ;
186       update exp. cfc_exemple & tutorial_cfc_offline output files.
187    o multi-threading and IO:
188      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
189        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
190      - barrier before and after reading.
191      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
192      - avoid using MDS_WRITELOCAL for LAND pkg output.
193      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
194        common-block variables ; Allows multi-threading with master-thread IO.
195    o change default MAX_NO_THREADS from 32 to 4 ;
196      and stop cleanly when MAX_NO_THREADS is too small.
197    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
198    
199    checkpoint58m_post
200    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
201       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
202    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
203       keep global_ocean.90x40x15 (for AD testing) with former secondary test
204       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
205    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
206        add MITgcm_tutorials (= code + all the tutorials)
207    o ecco, option to compute cost for total ssh (mean+anom)
208    o consistent with addition of ptracer and ssh in pkg/profiles
209    o profiles: adding ptracer and ssh
210    o testreport: change multi-test output-file name
211      (from output.txt.{name} to output.{name}.txt)
212    o profiles: now ok for mutli-tiles case
213    o seaice: add 4 parameters for different advection schemes for area,
214      (effective) seaice thickness, enthalphy, and snow height. Their default
215      is the standard parameter SEAICEadvScheme
216    o calc_gw:
217     - add cosFacU in zonal viscous flux (harmonic.visc.).
218     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
219       of tutorial_plume_on_slope.
220    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
221    o calc_gw: true flux-form, account for horizontal grid spacing.
222      update rotating_tank results, but not plume_on_slope (affected at
223      truncation level, 11 digits).
224    
225    checkpoint58l_post
226    o calc_gw:
227     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
228     - remove side-drag for now (need to fix it); update plume_on_slope results.
229     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
230    o commit code to make SST/SSS weights spatially variable
231      (based on either variable in-situ or variable initial T/S weights)
232    o pkg/ecco:
233      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
234        now based on horizontally varying weights wthetaLev, wsaltLev
235      * cost_averagesflags now returns year indices in addition to day, month
236      * sflux balance is performed on annual basis
237        (sflxumm, sfluxmm2, bal_sfluxmm)
238      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
239        including separate counting and multipliers
240    o pkg/rbcs
241      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
242    
243    checkpoint58k_post
244    o testreport:
245     - always build in dir. "build" (if not there, mkdir build instead of building
246       & running in input)
247     - run in dir run (if it exists), in build otherwise.
248     - call prepare_run (if input/prepare_run exists)
249     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
250    o pkg/exf modifications to interpolation and rotation routines for more
251       reasonable treatment of North Pole singularity: for tracers North Pole
252       value is set to northernmost zonal-mean value, for zonal velocity it is
253       set to zero, and for meridional velocity it is set to northernmost value.
254    o pkg/exf/exf_check_range.F
255     - add tile index to diagnostics and move stop statement to the very
256       end of the routine.
257    o pkg/diagnostics: (diagnostics_main_init.F)
258      define title of isomorphic variables according to the current config.
259    o pkg/thsice with pkg/seaice dynamics:
260    - fix domain of computation (interior only, required for exf) and do exchanges
261    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
262    o towards a standard way of dealing with multi-threading in MONITOR
263      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
264    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
265       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
266    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
267    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
268    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
269       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
270    o tracer advection:
271     - clean-up and simplify calc_common_factors.F
272     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
273       advection subroutine (but still not used within DST advection S/R)
274    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
275    
276    checkpoint58j_post
277    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
278      from file (collects calls previously in FORWARD_STEP)
279    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
280    o adjoint store dir. adjusted accordingly
281    o genmake2
282      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
283    
284    checkpoint58i_post
285    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
286      on wind stress (SEAICEstressFactor defaults to 1.)
287    o Total number of Timers is finite (<=40): comment out 2 non-essential one
288      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
289    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
290      on CS-grid: no longer loosing mass.
291    o exf & curvilinear-grid: no longer modify longitude xC & xG.
292    o pkg/ggl90: fix sloppy output and fix a bug
293    o pkg/seaice: added SEAICEuseEVPpickup parameter
294      - Set to false in order to start EVP solver with
295        non-EVP pickup files when using SEAICEuseEVP
296      - fix sign error in diffusion in seaice_calc_rhs
297    
298    checkpoint58h_post
299    * Modifications for bottom topography control
300      o replace hFacC by _hFacC at various places
301      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
302      o add non-self-adjoint cg2d_nsa
303      o update autodiff support routines
304      o re-initialise hfac after ctrl_depth_ini
305      o works for 5x5 box, doesnt work for global_ocean.90x40x15
306    * Adding verification for 5x5 box (4-layer) bottom topography control
307    
308    checkpoint58g_post
309    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
310       used for mean seasonal cycle, mean diurnal cycle); add an example
311       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
312    o pkg/ggl90:
313      - add parameter (minimum surface kinetic energy)
314      - fix bug (avoiding division by zero)
315    o couple pkg/thsice to pkg/seaice:
316      - modify advection in seaice to accomodate new scalar fields to be advected
317      - only muliDimAdection scheme work with seaice/thsice
318      - mapping of thsice-variables to seaice-variables, back and forth
319      - does not break the verification experiments, but does not give the
320        desired results either
321    o pkg/seaice
322      - make (default) second order advection a bit less confusing?
323    
324    checkpoint58f_post
325    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
326      to pkg/seaice):
327      - new routines thsice_map_exf and thsice_get_exf provide the interface
328      - add an additional formal parameter to thsice_solve4temp
329    o pkg/exf:
330      - add new fields wspeed, snowprecip (to be able to couple to thsice)
331      - correct Stefan-Boltzmann constant
332      - new parameter for longwave surface emittance
333      - separate some stuff from exf_bulkformulae into new routines  
334        exf_radiation, exf_wind
335      - add new parameters and constants: longwave emissivity for ocean, ice
336        and snow, evaporation parameters over ice
337      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
338        either wind from stress or stress from wind
339    o pkg/thSIce:
340    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
341    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
342       and THSICE_CALC_THICKN
343    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
344    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
345      to make debugging easier.
346    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
347    o pkg/bulk_force:
348      - clean-up comments and parameters ;
349      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
350    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
351      generate new output for test-experiment: aim.5l_cs.thSI
352    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
353      testreport accordingly
354    
355    checkpoint58e_post
356    o SEAICE_CGRID adjoint done
357    o R_STAR adjoint implemented.
358      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
359      * need to sort out init. of h0facc, etc.
360    o Make pkg/profile fully independent of ecco,cost, etc. stuff
361      to be able to use it in pure forward.
362    
363    checkpoint58d_post
364    o upgrade simple test-experiment to tutorial example:
365     step.1: duplicate the experiment and (step.2) will remove the old copy.
366      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
367      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
368      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
369      tutorial_global_oce_biogeo    <- copy of dic_example
370      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
371      tutorial_plume_on_slope       <- copy of plume_on_slope
372      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
373      tutorial_global_oce_optim     <- empty for now (David ?)
374      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
375     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
376    o correct a sign problem in cost_scat.F
377    o obcs and ptracers: fix boundary conditions for advections schemes
378      with larger stencil
379    o thsice adjoint: start
380    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
381      completeness
382    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
383      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
384    o ptracers adjoint:
385      * avoid extensive recomputatations
386      * fix missing re-init. of gptr (missed by TAF)
387    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
388      me to turn off the excessive output to STDOUT that this package produces
389    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
390      and add those terms in Vector-Invariant formulation.
391    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
392      if the control period (xx_hfluxperiod etc) is 0
393    o in profiles pkg, clean routines and fix details
394    o in ecco pkg, reading ssh data:
395      fix problem in case the model does not start at iter0=0
396    o fix mnc-pickup/restart for ptracers
397    o new package prifiles:
398      code to compute profile-based cost by Gael Forget
399      (modifs in ecco, ctrl, autodiff)
400    o Benign bug fix in initialization (spotted by M. Mazloff) of
401      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
402    
403    checkpoint58c_post
404    o adjoint: finish NLFS adjoint and provide reference output in
405      verification/global_ocean.90x40x15/results_ad_nlfs
406    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
407      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
408      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
409      with SEAICE_CGRID defined.
410    o move calendarDumps from "data" to "data.cal" and clean-up the code
411      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
412    o add useEXF & useCAL flags (for now, set in hard-coded way)
413    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
414      (were missing in NH mode, and wrong in quasihydrostatic mode).
415      waiting for Chris updated version of calc_gw to add those CALLs.
416    o fix bug in quasihydrostatic S/R ;
417      add a test for this option: global_ocean.90x40x15.qshyd
418    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
419      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
420    o add on/off flag useOffLine for package OFFLINE
421    o seaice:
422      - modify advection so that it works also on the C-grid
423      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
424        problem in multi-tile runs with C-grid
425      - add flags for clipping ice velocities and/or masking solver forcing
426      - fix drag (ocean on ice) formulation and a bug that caused noise in the
427        C-grid solver
428      - added a few comments to seaice_diffusion.F
429      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
430        are now exclusive)
431      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
432        required re-ordering the code a little:
433       + make DAIRN global variable (defined in SEAICE)
434       + move computation of the viscosities eta and zeta into a new separate
435         routine (because I need to recompute them in seaice_ocean_stress.F)
436    
437    checkpoint58b_post
438    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
439      update output.txt of exp. aim.5l_cs.thSI
440    o various mnc cleanups and improvements:
441      + shrink lookup tables by factor of ~4
442      + better error reporting when running out of lookup space
443      + able to handle longer path/file names (up to 500 chars)
444    o adjoint:
445      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
446      - TBD: "hidden" mom_vecinv recomp. in dynamics
447    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
448     (allow to differentiate between forcing components using new integer flags:
449      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
450     and add new flag to put Dissipation tendency out of Adams-Bashforth.
451    o ecco
452      - enable trend removal from SSH anomaly obs.
453    o adjoint
454      - a fix for PmEpR when #undef EXACT_CONSERV
455      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
456      - try to fix "hidden" recomp. in forward_step for NLFS
457        (NLFS seems broken sometimes after I checked it in)
458    o seaice:
459     - add c-grid version of the dynamic solver:
460       + three new routines that are the c-grid substitute lsr, dynsolver
461         and ostres
462       + put a few fields that were local to dynsolver into global common
463         blocks, so that I can move the computation of stresses etc into
464         seaice_lsr (saves coding but may break the adjoint).
465     - replace more hardwired parameters by runtime parameters
466     - add ice masks that mask the rhs of the implicit solvers where there
467       is no ice (commented out in seaice_dynsolver, because i am not sure
468       if this works properly), eventually this should replace the clipping
469       of ice velocities in seaice_dynsolver to +/-40cm/s.
470    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
471      include it only where its needed
472    o move balancing of fluxes before the call of external_forcing_surf
473    o seaice:
474      - correct units of turning angles (now they are really in degrees)
475      - move computation of GWATX/Y out of main routine into dynsolver
476      - initialize GWATX/Y in seaice_init
477    o Apply mask on Fresh-Water flux (needed for SSH forcing).
478      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
479    o seaice: add runtime flags for turning angles (default to zero)
480    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
481      and trend from exf forcing and ctrl control adjustments
482    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
483      (since checkpoint57x_post)
484    o change the default rotation period to 86164.s = the Earth rotation
485    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
486      and based on a reference stratification. Tested within hs94.cs-32x32x5.
487    o seaice advection: add code for choosing between the default (2nd order
488      central differences) and multiDim advection schemes provided by
489      pkg/generic_advdiff
490    o seaice:
491      - removed all references to SEAICE_GRID.h fields from
492        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
493        (cubed-sphere configuration will change a little)
494      - grid computations in seaice_init are obsolete now.
495      - cleaned up code a little so that is easier to read (hopefully).
496      - added new (better?) discretizations of default advection and diffusion
497        (turn on with SEAICEuseFluxForm)
498      - replace 1 in 3d global fields by kSurface in growth.F
499      
500    checkpoint58a_post
501    o seaice:
502      - bug fix in advect.F
503    o shelfice:
504      - separate shelfice load anomaly from pload (breaks with time
505        dependent forcing), => introduce constant field shelficeLoadAnomaly.
506        Its default is 0., but it may be computed more cleverly from (unknown)
507        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
508        done offline. A good approximation of the pressure load anomaly is
509        necessary to avoid large initial adjustment processes underneath
510        deep-reaching shelfice.
511      - small fix in ISOMIP shelfice_thermodynamics
512      - add more sophisticated thermodynamics of Hellmer (1989), this is
513        now the default
514      - give a few constants more intuitive names
515    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
516      if bulk formulae are used in long integration (especially EmPmR). Turn
517      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
518      if balancePrintMean, the imbalance that is substracted is printed to
519      STDOUT.
520    o fix bug (typo) in obcs_apply_eta.F
521    o add a new package shelfice which enables us to model the circulation
522      underneath shelf-ice with draughts of hundreds of meters.
523     - works
524     - to do: + include improved thermodynamics
525              + check whether kSurfC (from model/inc/SURFACE.h) can be used
526                instead of new field kTopC
527              + can we use topoFile, Ro_surf and existing code in ini_depth.F
528                instead of new field R_shelfIce and new code in ini_depth.F
529                and ini_mask_etc.F?
530              + adjust vertical mixing schemes?
531    o seaice pkg:
532     - add a cpp-flag to include a simple formula for a salinity dependent
533       freezing point of sea water at the surface
534     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
535       meridional stresses are now different (and hopefully correct)
536    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
537       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
538       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
539    o pkg/diagnostics: add options and parameters for regional-statistics
540       diagnostics ; define regions by reading a region-mask from a file
541       (might add other options later)
542    o pkg/bulk_force:
543     - add option and parameters to use AIM surface-flux formulae.
544     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
545       others forcing fields (defined in PARM05, parameter file "data") are loaded
546       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
547     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
548     - use the right EXCH call for uwind,vwind (to work on CS-grid).
549     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
550       and parameters (note: calcWindStress replaces .NOT.readwindstress).
551     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
552    
553    checkpoint58
554    o add "--embed-source" option to genmake2 which, when the supporting
555      tools can be compiled (as determined by genmake2) will turn on the
556      embed_files package which then embeds the entire MITgcm source code
557      (*.[fFhc] + Makefile) used for the build within the executable
558      - requested by CNH but off by default
559      - adds a paltry <9MB to the mitgcmuv executable in most cases
560      - only writes the output when useEMBEDSRC in eedata is true
561    o clean up 3-dim. relaxation codes:
562      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
563      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
564      * Thanks to Tom Haine for testing!
565    
566    checkpoint57z_post
567    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
568      affects output (@ truncation level) of exp. plume_on_slope ; updated.
569    o fix the pickup behavior for obcs in combination with ptracers
570    o fix a bug in ptracers_external_fields_load
571    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
572      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
573    o transfered surface NH pressure to eta field (if exactConserv).
574    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
575         and update lab_sea output.txt file.
576    o completing 3-dim. relaxation code: additional term
577         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
578      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
579      * At compile time, in "EXF_OPTIONS.h" set
580          #define  ALLOW_CLIMTEMP_RELAXATION
581          #define  ALLOW_CLIMSALT_RELAXATION
582      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
583          tauThetaClimRelax3Dim = 15552000.0,
584          tauSaltClimRelax3Dim  = 15552000.0,
585      * 3 cases:
586          1) Use a constant-in-time 3-dim. field
587          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
588          3) Real-time relax. to time-evolving prescribed field
589    o Adding Laplacian-type smoothness constraint on
590      initial and boundary (forcing) controls (ic, bc)
591      * enable at compile-time via
592        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
593      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
594      * Absolute scale somewhat unclear so far
595      * no area weighting was included since no other cost term does so far
596    
597    checkpoint57y_post
598    First step for a NLFS adjoint
599    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
600    o new init. routines for calc_r_star, calc_surf_dr
601    o still need to deal with ini_masks_etc
602    o testreport seemed happy
603    checkpoint57y_pre
604    
605    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
606    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
607    o add new offset feature to offline pkg (plus minor cleanup)
608    o cfc fixes for final year of integration
609    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
610      be in GCHEM_OPTIONS).
611    
612    checkpoint57x_post
613    o fix testreport Pb in multiple test experiment.
614    o cleanup our namelist syntax in verification:
615      - make it more F95 standards compliant (some work still needed)
616      - allows the vast majority of our tests to work with gfortran
617    o Non-Hydrostatic:
618     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
619     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
620    o Allow to apply AB on T,S rather than on AB(gT,gS):
621     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
622     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
623       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
624     - need a "clever" read_pickup to restart from the other AB formulation
625    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
626    o remove some unused variables (reduces number of compiler warnings)
627    o adjoint
628      * Disable useVariableViscosity for adjoint for time being
629        (there are a number of extensive recomputations)
630      * Initialize certain variables needed for adjoint
631    
632    checkpoint57w_post
633    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
634                 fix the singleCpuIO RS version of MDSWRITEFIELD
635       and add a WARNING if using globalFiles=T with multi-processors.
636    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
637      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
638    o tracer advection scheme:
639      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
640       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
641       was not very convenient).
642      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
643       (further tests needed for the implicit DST & Flux-Limiter schemes).
644    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
645      and sRef for convenience, handy, when you want to initialize
646      ptracers in a large domain with a constant non-zero value. Also,
647      untangle ptracers_init.F a little.
648    
649    checkpoint57v_post
650    o change dome exp. to use variable viscosity in side-drag terms.
651    o remove all the files from the cfc_offline test since they are now
652      incorporated into tutorial_cfc_offline which has been producing
653      identical results for a few days of testing
654    o add new parameter: sideDragFactor to enable half-slip-side BC
655      and change side-drag S/R to use viscosity from mom_calc_visc
656      (can switch back by setting sideDragFactor=0.); affects results at
657      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
658       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
659    o vorticity & strain are now computed without masking, to account for
660      no-slip-side BC in variable viscosity calculation ; mask is applied
661      anyway later on, before computing advection/coriolis terms.
662    o modify exp4 to test new obcs support for reading from external files
663      and for passive tracers
664    o fix behavior of ptracers_monitor when monitor output is written to a
665      netcdf-file; still not independent of monitor.F (writes in the same
666      file).
667    o change default value of tRef (put a uniform, meaningful value for ocean
668      & atmos) and initialize sRef (was missing, as Martin mentioned).
669    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
670      to be proportional to enstrophy dissipation length.  Thus,
671       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
672      This is now consistent with Smagorinsky and with the manual.
673    
674    checkpoint57u_post
675    o OBCS and PTRACERS: add open boundary support for passive tracers
676      - either use homogenous (pseudo) v.Neumann conditions or prescribe
677        OB-values from file; this is not different from the way theta and salinity
678        are treated
679      - however, Orlanski-radiation conditions are not supported, and the model
680        will stop if you use pTracers and Orlanski at the same time.
681      - beefed up the rountine obcs_external_fields_load: now only those open
682        boundary values are overwritten with values from files for which there
683        are really files, otherwise the OB-fields remain untouched. This makes
684        it possible to use different OBs at different ends of the domain (as
685        with EXF)
686    o reduce number of exch calls in shap_filt (s2).
687    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
688      truncation level) 4/5 MLAdjust test results (11&12 digits match).
689    
690    checkpoint57t_post
691    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
692    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
693      same truncation, independent of the face number: affects affects several
694      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
695    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
696      note that biharmonic viscosity + no-slip was not tested in any experiment.
697    o fix bug in non-linear free-surf side-drag ; generate new output for
698      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
699    o make mnc honor the writeBinaryPrec flag for most kinds of output
700    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
701    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
702      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
703    o add brackets in multi-terms sum to get same truncation, independent of
704      the face number (manage to get exactly same value of gU,gV at the cs-edge)
705      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
706    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
707      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
708      a maximum grid-scale Reynolds number.  Also, changes all length calculations
709      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
710      Suggested values of viscosity parameters found in mom_calc_visc.
711      Many new viscosity diagnostics available.
712    
713    checkpoint57s_post
714    o Add clearing-house for viscosity calculations, mom_calc_visc and
715      correct numerous bugs in LeithD and Smagorinsky discretizations.  
716      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
717      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
718      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
719      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
720      The Strain-Tension form is now called with useStrainTensonVisc=.true.
721      ViscAhStrain and viscAhTension are now retired.
722    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
723    o In response to JMC's bug report, genmake2 now ignores any soft-links
724      that it finds in the *current* directory when searching for files.
725      Soft-links found in any other source directories will still work as
726      they did before.
727    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
728      a C routine to unlimit the stack size
729    o mnc-ify pkg/aim snapshot vars
730    o mnc-ify pkg/land as requested by Daniel
731    o various changes to mnc including:
732      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
733      - output can now be grouped so that all files within a group
734          change the ITER portion of their names in lock-step together
735      - can now read ("global") PER-FACE (in addition to PER-TILE) files
736          and works with both EXCH1 and EXCH2 (but needs more testing)
737      - writing works for all verification test cases w/ g77 on Linux
738    
739    checkpoint57r_post
740    o make MNC variable initialization happen earlier
741    o add diagnostics for (almost) each term of the momentum Eq.
742    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
743    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
744    o remove MINIMAL_TAVE_OUTPUT option ;
745      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
746    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
747      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
748    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
749    o add time-dependent SST, SSS control
750    o cost terms in ecco/ modularized (new cost_generic.F)
751    o cost_averages routines are modularized (new cost_averagesgeneric.F)
752    o new infrastructure for seaice model vs. obs misfits in seaice/
753      * driver from the_main_loop.F is seaice_cost_driver.F
754      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
755      * gradient check in Exp. 6a of natl_box_adjoint/
756    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
757      (see README file)
758    
759    checkpoint57q_post
760    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
761    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
762      - bug was reported by Jean-Michel and Ian Fenty
763    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
764      update exp. cpl_aim+ocn output.
765    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
766      Needed for high-res. runs with large global files
767      to be able to limit tapelev size
768    o Changed some tests for adjoint:
769      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
770      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
771      * global_ocean.90x40x15/ back to default 3-level checkpointing
772    o Modifications to enable scripted COMMON to MODULE conversion
773      * verification/OpenAD/code/ has necessary scripts and description;
774      * converts, compiles and runs successfully;
775    
776    checkpoint57p_post
777    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
778    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
779      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
780    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
781    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
782      (was already the case for dissipation with mom_vecinv,
783       and also the case for grad.PhiHyd when staggered-timeStep)
784      This will allow to put dissipation out-off the AB time-stepping.
785     Unfortunately, affects truncation error. Update output of exp. that "fails"
786      (cg2d matching number) and leave the others for later: front_relax(10),
787      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
788      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
789    
790    checkpoint57o_post
791    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
792      (2) its ready to be documented during the 20050801 DocFest
793    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
794      for ideal_2D_oce and lab_sea on linux_ia32_g77
795    o set to #undef CTRL_SET_OLD_MAXCVARS_30
796      in global1x1_tot/code_seaice_adj to access indices 32, 33
797      (worth another tag)
798    
799    checkpoint57n_post
800    o adding precip control xx_precip 32
801    o adding swflux control xx_swflux 33
802    o Replacing 10 forcing penalty cost routines by 1 generic.
803    o Implementing partitioning in time-mean and variable adjustment
804      for atmos. state.
805    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
806    o in natl_box_adjoint:
807      * updated exp 1 to 10
808        (but does not have time-mean vs. variable split results yet)
809    o updated global1x1/*_seaice_adj/
810      to incorporate latest changes
811    o enable useSingleCpuIO for mdsio vector routines
812      (applies in particular to tapelev I/O)
813    o removed inefficient K-loop in all active_file*control*.F
814    
815    checkpoint57m_post
816    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
817      and advect_cs (use EXCH-2 and standard cs-32 grid files).
818    o pkg/exch2: filling of face-corner halo regions is optional
819      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
820    
821    checkpoint57l_post
822     tag before updating tutorials (pre-release-2)
823    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
824       for output and interpolation of input fields onto model grid)
825    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
826       Affects results of exp. rotating_tank ; update output.txt.
827    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
828          and taking the square quantity and/or using a fraction-weight field.
829    o fix aim_diagnostics_init.F mate numbers.
830    o add mnc output capability to diagnostics/diagstat and update
831      our cvsignore files for the ACSII output generated
832    
833    checkpoint57k_post
834    o lab_sea now uses diagnostics package and provides a suite of
835      new EXF diagnostics output.
836    
837    checkpoint57j_post
838    o exf
839      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
840        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
841        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
842      * extended diagnostics output
843        - now includes all EXF variables
844        - hs, hl moved to common block
845        - separate S/R for diagnostics, called after ctrl vector is added
846        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
847        - EXFqnet contains true Qnet (i.e. includes qsw)
848      * updated verif. lab_sea, global_with_exf
849      * Rearranging hflux (exf_mapfields -> exf_getforcing)
850        to ensure that diagnostics sees a true EXFqnet
851    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
852    o diagnostics pkg: change pointers so that 1 diagnostic can be used
853      several times with different frequencies.
854    o mnc-ify the thsice package as requested by Daniel Enderton
855      - the monitor--MNC output needs work
856      - many attributes need to be added (most are currently blank)
857    o mnc-ify theaim_v23 package as requested by Daniel Enderton
858      - many attributes need to be added (most are currently blank)
859    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
860    o add Sadourny like discretization to the 4th.O vorticity advection scheme
861    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
862      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
863         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
864    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
865     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
866    
867    checkpoint57i_post
868    o Diagnostics package was changed: diagnostic allocation is now deactivated
869      by setting an empty file name in the namelist (used to be by setting 0 frequency)
870    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
871      add 1rst Order upwind vertical Shear.
872    o add a quick fix for A/B checkpointing in OFFLINE mode
873    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
874      end-run around the C/Fortran linking horror in eesup/src/timers.F
875    o added pkg/runclock: allows user to terminate run based on wall clock
876    o added non-hydrostatic scaling parameter: nh_am2
877    o pkg/my82: futile attempt to make results compiler-independent by adding
878      some "_d 0", etc. no effect.
879    o for mnc output, fill the 'T' coordinate var with myTime and create a
880      separate 'iter' variable for iteration count
881    o pkg/diagnostics:
882      add new capability: output of Global/Regional & per-level statistics ;
883      tested against monitor output (including land & thSIce) on various exp.
884    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
885    
886    checkpoint57h_done
887      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
888      data.diagnostics, data.gchem, data.ptracers) is done.
889    
890    o pkg/diagnostics: prepare for Global/Regional statistics.
891      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
892    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
893      and rename it: DIFFERENT_MULTIPLE
894    
895    checkpoint57h_post
896    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
897    o pkg/diagnostics: change output frequency, now in seconds (instead
898      of Nb of iterations). This requires to change data.diagnostics.
899    checkpoint57h_pre
900    
901    o in mnc, let the user create the output dir if both mnc_outdir_date
902      and mnc_outdir_num are false
903    o add fflags() to pkg/diagnostics which allows one to specify, on a
904      per-file basis, the file precision [default behavior is unchanged]
905    o added diagnostics to pkg/kpp, including computation of mixed layer
906      depth based on a temperature/density criterion
907    o updated verification/natl_box to test the new pkg/kpp diagnostics
908    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
909    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
910    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
911      not mnc -- this mistake was found by JMC and is now corrected
912    
913    checkpoint57g_post
914    o add Adams-Bashforth 3rd Order time stepping:
915      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
916      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
917    checkpoint57g_pre
918    
919    o make lambda[Theta,Salt]ClimRelax spatially varying
920      (default remains spatially uniform constant based on tau)
921    o added new control variables
922      * init. uVel, vVel, etanN
923      * lambda[Theta,Salt]ClimRelax
924    o separate masks used for ctrl_pack/unpack 'from write_grid' output
925      (suggested by G. Forget)
926    
927    checkpoint57f_post
928    o add parameter "baseTime" = model base time = time at iteration zero
929      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
930      account for baseTime shift
931    o move Coriolis arrays from PARAMS.h to GRID.h
932    checkpoint57f_pre
933    
934    o mnc-ifying the seaice package
935    o introduced an alternative length scale calculation for use in the limiting
936      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
937    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
938    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
939      as well as grad(vort3).  Made it compatible with both approximate form
940      for the cubed sphere and full form of these gradients.  Added flag
941      useFullLeith to select between approximate and full form.  
942    o add "d0" in getcon.F to reduce differences between compilers/platforms
943      update output.txt of exp. fizhi-gridalt-hs
944    o change port_rand funtion to allow to set the seed.
945    o fix obscure MNC bug involving conversion between reals and integers
946      - it caused no problems with certain (eg. gcc, ifc) compilers but the
947        new version is now more standards-compliant
948    o adjoint-related modifications
949      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
950      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
951      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
952    
953    checkpoint57e_post
954    o Adding eddy stress controls a la Ferreira et al.
955    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
956    
957    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
958      update output.txt of exp. fizhi-gridalt-hs
959    o add more "Z" dimensions and associated coordinate vars to MNC
960    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
961    o parameter calendarDumps: when set, approximate months (30-31 days) and years
962      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
963      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
964      months and years.  Requires pkg/cal.
965    o diagnostics: add pickup functionality
966      - off by default for backwards compatibility
967      - current version only uses MDSIO -- MNC will be added
968    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
969    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
970    
971    checkpoint57d_post
972    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
973    o modify verification/ideal_2D_oce so that it tests the creation of mnc
974      output from the diagnostics package
975    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
976    o make genmake2 more portable by using ".$FS" instead of ".f" for more
977      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
978    o add coordinate variables to the MNC output from the diagnostics package
979    o change MNC-flags default value: true when useMNC=TRUE
980    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
981      the ability (off by default) to read the grid information using MNC
982    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
983    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
984    o do snap-shot diagnostics at the middle of the time-interval (instead of
985      at the end).
986    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
987      new test for AIM with thSIce + slab-ocean
988    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
989    o move state variable diagnostics to the beginning of the time step ;
990      (note: still needs some work specially for snap-shot diagnostics)
991      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
992    
993    checkpoint57c_post
994    o Change testing option (-ieee) to get closer agreement between g77 & ifort
995    o generate new output.txt files on faulks with g77 & the new -ieee option
996    checkpoint57c_pre
997    
998    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
999      update output.txt of exp. global_ocean.90x40x15
1000    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1001      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1002    o add saltFlux(+File) forcing capability with periodicExternalForcing
1003    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1004    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1005    o improvements for the MNC output from DIAGNOSTICS:
1006      - correct handling of the unlimitied dimension
1007      - all dims now have associated coordinate variables
1008      - variables located at U, V, and Corner ("Z") points are now written
1009        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1010        *all* data points are output
1011    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1012    o added pkg/seaice/seaice_monitor.F
1013    o mdsio_readfield.F can now read files visible only to master MPI process.
1014    o pkg/seaice: some test code for ice-modified ocean stress
1015    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1016      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1017      spurious negative numbers for precipitation and humidity.  Will cause
1018      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1019    o pkg/ctrl/
1020      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1021        May be enabled via doPackDiag
1022      *  introduce z-scaling of
1023         + gradient (doZscalePack) and
1024         + control (doZscaleUnpack)
1025    o pkg/mdsio/
1026      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1027      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1028    
1029    checkpoint57b_post
1030    o simplify options in diagnostics_fill arguments (remove weird combinations)
1031    o fix MNC coordinate variables so that they now contain per-face index
1032      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1033      general, EXCH2 grids are only aligned to a "local" coordinate system
1034    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1035    o Implement instantaneous output within pkg diagnostics:
1036      setting a negative frequency in data.diagnostics produces
1037     "snap-shot" output (as opposed to time-average if freq > 0)
1038    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1039      NOTE: change ptracer diagnostics name: use 2 characters to work with
1040            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1041    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1042      becomes the coordinate variable for the 'T' dimension
1043    o add CF-style coordinate variables to MNC
1044      - just a first cut:  numbers are meaningless on the cubesphere and
1045        missing along the T axis but otherwise it works!
1046    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1047    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1048    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1049      this is based directly on what the model compute, so that the content of
1050      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1051    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1052    o clean up build options files for SunOS, in particular
1053      - remove -traditional from xmakedepend
1054      - change -xarch=v9 to -xarch=native for f77
1055      - restore use of make (not gmake)
1056      - add CC=gcc if using g77
1057    o changes per discussion of AM, JMC, & EH3 today:
1058      - move redundant "grid" variables out of "state" -- in preparation of
1059        creating proper CF-style coordinate variables and in recognition
1060        that any/all grid variables can be easily copied (eg. w/NCO) from
1061        the grid files into any of the other NetCDF files
1062      - *always* output grid variables with MDSIO (this will eventually be
1063        changed)
1064      - output MNC grid file if useMNC is true
1065    o every instance of _END_MASTER() has been found and replaced with
1066      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1067      preprocessors
1068    o re-arrange diagnostics pkg initialisation:
1069     - allow each package to extend the available diagnostics list
1070     - add some checking and fix small problems (multi-threaded, ...)
1071     - new S/R diagnostics_fill (replace fill_diagnostics):
1072       look through the short list of active diag. (instead of the long list)
1073       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1074    
1075    checkpoint57a_post
1076    o this set of changes restores TAMC compatibility
1077      tested for global_ocean.90x40x15 adjoint on trough
1078      (what a pain)
1079    
1080    checkpoint57a_pre
1081    o some modifs in tools/build_options for sunos
1082    o call ctrl_pack for ctrl at end for optimcycle=0
1083    
1084    checkpoint57
1085    o add horizontal bi-harmonic viscosity for vertical velocity
1086      - new parameter viscA4W (defaults to viscA4)
1087      - affects only non-hydrostatic code
1088      - to be done: no-slip lateral boundary conditions
1089    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1090    o implement Implicit Vertical advection for pTracers
1091    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1092      (implemented also for implicit vertical diffusion & advection)
1093    o OBCS: extend application of tracer open boundary conditions
1094      to a strip beyond the boundary of width Olx/Oly
1095    o add call monitor to TAF set of required calls (flow directives)
1096      and include in natl_box_adjoint
1097    o untangle a few ifdefs related to cost, ctrl, autodiff
1098      untangel a few ALLOW_ECCO_OPTIMIZATION
1099    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1100      (theta2, salt2 in ecco_cost_weights)
1101    
1102    checkpoint56c_post
1103    o OBCS as control variables
1104      - update ctrl_ad_diff.list, obcs_ad_diff.list
1105      - remove balance of obcs controls from default
1106      - fix index bug nobcs in ctrl_init
1107      - fix dummy fields filen in ctrl_pack
1108      - add dummy weights for obcs
1109    o lsopt: comment out fort.94 output
1110    o optim:
1111      - remove unnecessary header files
1112      - adjusted namelists
1113      - add xerbla.F to Makefile
1114    o exf:
1115      - multiple modifications of exf_check_range
1116      - unit change in exf_init_runoff from [m/year] to [m/s]
1117    o mdsio:
1118      - i/o-vector change debugLevel from debLevA to debLevB
1119    
1120    checkpoint56b_post
1121    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1122      is called from DO_THE_MODEL_IO
1123      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1124      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1125      - clean up PTRACERS_WRITE_TIMEAVE a little
1126    o add another verification experiment that tests both the cfc-pkg and
1127      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1128      reactive tendencies treated inline with regular timestepping
1129    o testreport previously did a lousy job of comparing small numbers, so
1130      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1131      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1132      testreport.
1133    o ptracers_monitor: bug fix for MPI
1134    
1135    checkpoint56a_post
1136    o GCHEM: finish reorganizating the package
1137      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1138        (introduces another 3D-array for each passive tracer, but only if
1139        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1140        gchemTendency is not needed because the timestep is done separately)
1141      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1142      - GCHEM is now---more or less cleanly---separate from PTRACERS
1143      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1144        so clear to me how that should be done in a general way.
1145    o CFC: improve formatting of output in CFC_ATMOS
1146    o PTRACERS:
1147      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1148        that ALL experiments with ptracers enable can be checked. This makes
1149        GCHEM_MONITOR obsolete.
1150      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1151        monitorFreq
1152      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1153    o add PTRACERS (PTR0[1-5]) to testreport output
1154    o exf_check_range:
1155      * default changed to .TRUE.
1156      * will check values for niter0 if debLevA, every timestep if debLevB
1157      * STOP in exf_check_range if 'out of range'
1158      * range chosen generous to allow for potential extema
1159      TBD: a version with stricter range
1160           permitted range would be runtime parameters
1161    o GMredi:
1162      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1163      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1164      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1165    o GCHEM:
1166      - move call to GCHEM_FORCING_SEP, so that it is now called before
1167        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1168      - introduced a useGCHEM runtime flag and applied it everywhere.
1169      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1170        this flag is now only visible within GCHEM-pkg routines.
1171      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1172        be replaced by a 3D array that is computed before thermodynamics; for
1173        this, the tracer ID iTracer had to be included into the parameter list
1174        of ptracers_forcing
1175      - set up forward_step to call gchem_forcing, that will replace
1176        gchem_forcing_int in ptracers_forcing
1177      - cleaning up
1178    o small cleaning of exch2: remove files that are also in eesupp/src
1179    
1180    checkpoint56
1181    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1182    o mnc: cleanup "full" files--fixes out-of-memory problem
1183    o ECCO-GODAE
1184      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1185      * fully merged and updated from SIO code
1186        windstress sign change affects
1187        - exf_inscal_[u/v]stress
1188        - sign of xx_tau[u/v] adjustments
1189        - signs in cost_scat
1190      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1191      * natl_box_adjoint updated and compressed
1192      * 2-level checkpoint switch added
1193        (tested in EXP. 1 of natl_box_adjoint)
1194      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1195    o SVD
1196      * first complete, non-hacked version for SVD calculations
1197      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1198        performed via direct access files admtlm_vector.it????
1199        (via ctrl_[un]pack)
1200      * optimcycle is used for ARPACK iteration counter
1201        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1202      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1203        and add linear transforms where necessary
1204      * controls are initial/final SST, SSS (can be extended; need to check
1205        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1206    o mdsio: filename info to both stderr, stdout
1207    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1208      from sign change
1209    
1210    checkpoint55j_post
1211    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1212      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1213    o add consistent build directories and .cvsignore files to verification
1214    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1215    o make all subroutines 30 or less characters in length for certain older
1216      compilers to work (a thorough search only turns up two routines in
1217      pkg/ptracers)
1218    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1219      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1220    
1221    checkpoint55i_post
1222    o change arrays for total vertical diffusivity (2.D if explicit,
1223      3.D if implicit) ; each ptracer uses its own background value.
1224    o added mnc/NetCDF output capability to ocn_compon_interf
1225      - added bits to verification/cpl_aim+ocn so that it can run on
1226        ITRDA and other clusters without the mpirun "-wd" option
1227    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1228      configuration
1229    o give MNC the ability to create additional files rather than
1230      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1231      - the default is just less than 2GB which is a practical limit
1232        on many systems
1233    o Compute the non-local term using either KPP vertical diffusivity (=default)
1234       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1235    
1236    checkpoint55h_post
1237    o add verification test "vermix"
1238    o remove all the *_ioinc flags and replace with the single global
1239      outputTypesInclusive flag
1240    o allow to set a vertical profile of vertical diffusivity for T & S
1241    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1242    o useMNC moved from data.mnc to data.pkg
1243    
1244    checkpoint55g_post
1245    o Renaming carbon AD experiments to comply with testreport conventions
1246    o Updating adjoint of Held-Suarez hs94.1x64x5
1247    o Fixing directives for non-ECCO forward_step, after ECCO directives
1248      have been fixed to avoid recomp. of do_oceanic_phys
1249      Works well for global_ocean.90x40x15,
1250      but recomp. issue remains for carbon
1251    o Updating adjoint output for natl_box_adjoint after
1252      pkg/ecco has been modified (see taga c55d_post)
1253    
1254    checkpoint55f_post
1255    o rename to timeave_init_fixed
1256    
1257    checkpoint55e_post
1258    o some delicate re-shuffle of store directives to avoid one
1259      extra call of do_oceanic_physics
1260      affects ecco_the_main_loop.F, do_oceanic_physics.F
1261      checkpoint_lev1_directives.h
1262    o NB: this may break global_ocean adjoint temporarily,
1263      but it is clear how to fix it. Will do later, need this now.
1264    
1265    checkpoint55d_post
1266    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1267    o ecco_cost_weights is modified to 1x1 runs
1268    o modifs to allow observations to be read in as
1269      single file or yearly files
1270    o enable to read exf forcing fields as either
1271      single file or yearly files (flag useExfYearlyFields)
1272    checkpoint55d_pre
1273    
1274    o switch between 2-level and 3-level checkpointing
1275    o add ability of MNC to write local and "partial" (eg. 2D slices where
1276      the full 3D field is never actually stored) arrays to NetCDF files
1277      with the correct (that is, the complete multi-dimensional) set of
1278      array indicies
1279      - used in mom_vecinv() to write the diagFreq output
1280      - tested (demonstrated) in verification/aim.5l_cs
1281    o further mnc-ification
1282      - add verification/lab_sea to the list with mnc setups
1283      - fix undefined mnc v-names in cd_code
1284      - add kpp to mnc output (both snapshot and timeave)
1285    o non-hydrostatic code
1286      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1287        in calc_gw.F
1288      - defaults to viscAh
1289      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1290        friction or Leith) in non-hydrostatic mode, as long as there is
1291        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1292    o pkg/cost
1293      extend simple cost functions to treat time mean quantities
1294      (T,U,V) via cost_accumulate_state from cost_tile
1295    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1296        be 2 times larger than the minimum size the advection scheme requires.
1297        now get a perfect conservation of salt in advect_cs test-exp (updated)
1298    o GGL90 (Gaspar's TKE mixed layer)
1299      - add horizontal diffusion of TKE, requires exchanges in
1300        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1301        default. In OPA there is no horizontal diffusion of TKE but the
1302        mixing coefficients are computed from a horizontal average of TKE of
1303        6 points or so. I think that diffusion has a little more physical
1304        justification.
1305      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1306        was in vain)
1307      - mask tke-variable in ggl90_init
1308    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1309    o fix biharmonic diffusion on CS-grid.
1310    o more obcs stuff
1311      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1312        for reading boundary values. This routine is called from
1313        obcs_prescribe_read
1314      - updated obcs_check
1315      - changed sponge layer relaxation parameter units for days to seconds
1316      - turned off sponge layer by default
1317      - changed argument list of OBCS_CALC to myTime+deltaTclock
1318      - fixed about 35 bugs in obcs_external_fields_load
1319    
1320    checkpoint55c_post
1321    o obcs stuff
1322      - new runtime flags useOBCSprescribe, useOBCSbalance
1323      - re-arranged obcs_calc
1324      - moved exf_getobcs to obcs_prescibe_read
1325        obcs_prescibe_read is called after ORLANSKI stuff
1326        and independent of it (executable can contain all).
1327      - updated obcs_check
1328      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1329        These may be necessary only if tangential velocities are
1330        prescribed at OB, not sure, needs testing.
1331    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1332      which simplifies the calls and passes the ifc check-bounds test
1333    
1334    checkpoint55b_post
1335    o add a 2D scalar, Z location, exchange_2 routine.
1336    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1337      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1338      affects advect_cs results (for the wrong reason): update output.txt
1339    o use a more standard discretization for biharmonic viscosity ;
1340     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1341      affects results of dome set-up: update output.txt
1342    o fix gad_advection.F (CubedSphere part), back to version 1.23
1343    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1344    
1345    checkpoint55a_post
1346    o merged code to
1347      * prescribe/read time-dependent open boundaries
1348        (works in conjunction with exf, cal)
1349      * sponge layer code for open boundaries
1350      * each boundary N/S/E/W now has its own CPP option
1351        (healthy for the adjoint)
1352    
1353    checkpoint55
1354    o up-to-date adjoint of previous breaks
1355      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1356      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1357      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1358      - carbon: * remove tr1-related adjoint verification
1359                * add ptracer as control variable
1360    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1361      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1362    
1363    checkpoint54f_post
1364    o in verification/carbin/ remove experiment related to
1365      ALLOW_PASSIVE_TRACER (array tr1 etc)
1366      code_ad/ input_ad/ results_ad
1367    
1368    o add two new packages
1369      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1370        + subject to optimization (memory)
1371      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1372        + subject to reordering (many GOTOs in the original code)
1373        + so far opps is called for every (i,j) point, and then operates in
1374          the vertical; one may want to reorder the scheme in order operate in
1375          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1376          fields)
1377    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1378      - all verification tests compile and run with linux_ia32_g77
1379      - defaults are compatible with current input files--nothing
1380        should change if you were not previously using MNC
1381      - MNC output has been added in numerous places (eg. timeave)
1382        but there are still a few writes not yet do-able with MNC
1383        (this is in progress)
1384      - flags now allow for either/or/both use of MDSIO and MNC and
1385        documentation will soon follow
1386      - numerous small formatting cleanups for ProTeX
1387    o add version info (via BUILD_INFO.h) to MNC and stdout
1388    
1389    checkpoint54e_post
1390    o add two new packages
1391      - pp81 (Packanowski and Philander, 1981), Richardson number and
1392        stratification dependent mixing
1393      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1394      - these scheme operate in a similar manner as KPP (without ghat, of
1395        course), however there is only one diffusivity that is used for both
1396        temperature and salinity (and passive tracers)ç
1397    o add offline package
1398    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1399      provided by Stephanie Dutkiewicz
1400    o genmake2: add ability to search for C compilers and cleanup test output
1401      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1402    
1403    checkpoint54d_post
1404    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1405    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1406      leading to additional shift by 5 days each year of integration
1407       (i.e. leading to considerable offset over the years)
1408    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1409    o start with no AB and no initial filtering (staggerTimeStep):
1410      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1411    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1412      (external loading & cpl import/export stay in forward_step.F)
1413    o update coupling interface to work with new staggerTimeStep
1414    o change MDSIO ptracers_pickup.
1415    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1416    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1417    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1418    
1419    checkpoint54c_post
1420    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1421      this affects (truncation error) output.txt of test-exp:
1422       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1423    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1424    o change Qnet to always be the net heat flux, (+upward).
1425      affects (truncation error) output of natl_box exp.: updated
1426    o define the max number of passive tracers in PTRACERS_SIZE.h
1427    o start to test mnc routinely in exp0
1428    o add sea-ice loading (sIceLoad) as a new forcing field.
1429    
1430    checkpoint54b_post
1431    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1432       impressive on Altix and Opteron systems)
1433    o diagnostics can now write NetCDF files through the mnc package
1434    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1435    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1436    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1437      affects (truncation error) output of lab_sea & natl_box exp.: updated
1438    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1439    
1440    checkpoint54a_post
1441    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1442    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1443    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1444    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1445      + internal_wave (shift in writing cg2d_ini_res)
1446    checkpoint54a_pre
1447    
1448    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1449      - modified verification/lab_sea and natl_box_adjoint accordingly
1450    
1451    checkpoint54
1452    checkpoint53g_post
1453    o prepare splitting of thermodynamics: store convect.counter in common block
1454    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1455      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1456    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1457    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1458    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1459    o restore adjointability
1460    
1461    checkpoint53f_post
1462    o modifications that affect AIM experiment results (update output.txt):
1463      - no advection of S at top interface Nr (pkg/generic_advdiff)
1464      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1465    o AIM pkg:
1466      - include stability function into surf.Flux derivative relative to Tsurf
1467      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1468    
1469    checkpoint53e_post
1470    o merged cylindrical coord configuration
1471    o added rotating_tank experiment
1472    checkpoint53e_pre
1473    
1474    checkpoint53d_post
1475    o faulks upgraded: re-generate output.txt that have changed:
1476       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1477    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1478    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1479    o added Sadourny discretization of Coriolis
1480      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1481      - re-enabled use of omega3 (useAbsVorticity)
1482    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1483      vector-invariant equations
1484      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1485    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1486      hopefully without new bugs
1487      - still to do: biharmonic friction for non-hydrostatic w
1488    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1489    o regenerated output for global_ocean_ebm (using -ieee)
1490    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1491      of mom_common/
1492      - simple re-arrangement of instructions within computing loop
1493    checkpoint53d_pre
1494    
1495    checkpoint53c_post
1496    o new version of coupler for AIM+thSIce and Ocean models
1497     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1498     - land: change Evaporation of snow
1499     - aim with thSIce: fix bug in snow-precip.
1500    o changes to calc_gw.F
1501     - bug fix for w^2 term near the bottom boundary
1502     - (hopefully) improve the lateral slip boundary condtions for use with
1503        partial/looped cells
1504      - because the bug fix changes two verification experiments anyway (exp5
1505        and plume on slope), change the lateral boundary condition from half slip
1506        to the value of no_slip_sides
1507    o ebm package wasnt quite up to the parallel task. Fixed that.
1508    o Adjoint of EBM package + verification
1509      * TLM OK
1510      * ADM not sufficient accuracy yet (needs further testing)
1511    
1512    checkpoint53b_post
1513    o Commiting new energy balance model to repository
1514      * package is pkg/ebm
1515      * verif. is verification/global_ocean_ebm
1516      * references are in ebm_driver.F
1517    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1518    C        Global thermohaline circulation. Part I:
1519    C        Sensitivity to atmospheric moisture transport.
1520    C        J. Climate 12(1), 71-82
1521    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1522    C        Global thermohaline circulation. Part II:
1523    C        Sensitivity with interactive transport.
1524    C        J. Climate 12(1), 83-91
1525    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1526    C        Destabilization of the thermohaline circulation
1527    C        by atmospheric eddy transports.
1528    C        J. Climate 7(12), 1870-1882
1529    o Will need long integration testing.
1530    checkpoint53b_pre
1531    
1532    o created pkg/mom_common in preparation for variable viscosity code
1533    o renamed and split ini_mnc_io
1534    o pkg/land: only liquid water can diffuse or run-off
1535    o AIM using land: soil wetness availability account for snow
1536    o added printMapIncludesZeros to EEPARMS namelist
1537    
1538    checkpoint53a_post
1539    o restore TAMC compatiility for exf_constants.h
1540      (no usage of _d in .h)
1541    o Additional storing in KPP in an attempt to fix
1542      TAMC problem with adjoint of KPP code.
1543      (no success...)
1544      Identical code works fine with TAF.
1545    o Fixed verification/natl_box_adjoint experiments.
1546      Initial conditions for Experiments 4 and 5 are now
1547      set to "SEAICE_initialHEFF=0", which is more reasonable,
1548      and hence gives results closer to that of Experiment 2.
1549      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1550    
1551    checkpoint53
1552    o stable checkpoint with up to date adjoint
1553      TLM tests only run for 1st grdchk at the moment. Its unclear if
1554      this is a code problem or a problem with resetting code for g_
1555      variables that is being autogenerated wrong.
1556      Otherwise:
1557       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1558       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1559         are both still in chaos following their security messes.
1560    
1561    checkpoint52n_post
1562    o various build (mostly genmake2) changes including:
1563      - ability to build/run more easily within Cygwin and MacOS X
1564      - more complicated Makefiles with a stronger dependence on Gnu Make
1565    o pkg/seaice modifications
1566      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1567        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1568        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1569      - changed proxy for geostrophic velocity and updated
1570        verification/lab_sea/results/* accordingly
1571      - removed ADI dynamic solver from pkg/seaice
1572      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1573        they caused a segmentation fault under certain circumstances
1574      - removed unused field WATR
1575    o bug fix in exf-package:
1576      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1577         now reflect that.
1578    o small fixes in the cal-package:
1579      - set reference date to first of January for the 'model'-calendar
1580      - failing of cal_CheckDate in cal_FullDate now actually results in a
1581        warning
1582    o small modifications in exf-package to increase flexibility:
1583      - change climtempfreeze from a constant to a runtime parameter that
1584        is specified in data.exf_clim (default = -1.9)
1585      - introduce runtime parameter windstressmax (default = 2.0) that is
1586        specified in data.exf
1587    o fix in pkg/thsice:
1588      - update Evap (Tsf changes) to be consistent with Latent heat flux
1589      - maintain snow precipitation unchanged (even if Tsf >=0).
1590     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1591    
1592    checkpoint52m_post
1593    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1594      this does not change any of the results, because myIter=0 in swfrac always
1595      lead to jwtype=2 (the default anyway), but the call makes little sense
1596      as a default
1597    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1598    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1599      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1600    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1601    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1602    o extending useSingleCpuIO option to work with new exch2 I/O format
1603      - old-style, missing-tile I/O is still accessible by defining CPP
1604        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1605    o monitor package can write to NetCDF files and/or STDOUT
1606    o fix re-definition bug in MNC_GRID_INIT_ALL()
1607    o doc/api_reference added
1608      - a framework for building an API Reference Manual using all
1609        the "protex" comments embedded in the code
1610      - see pkg/generic_advdiff, pkg/mnc for examples
1611    o MNC:
1612      - make myThid the last argument for all subroutines
1613      - new default for the grid files: NO halos
1614      - add useMNC and other run-time flags
1615      - separate per-file-group handling of the unlimited dimension
1616      - early initialization of MNC w/ flags read at the eeboot stage
1617        and lookup tables set in initialize_fixed
1618      - write all MNC output to a freshly-created directory
1619    o thermodynamics sea-ice (thsice) is now tested with testreport.
1620    o test exp. advect_cs: use the standard cs32 grid ; update output.
1621    o Added functionality to grdchk:
1622      pick global i,j,k position (or nearest wet) where to perform check.
1623    
1624    checkpoint52l_post
1625    o new land formulation:
1626      a) use ground enthalpy as prognostic variable to ensure exact
1627         energy conservation.
1628      b) account for water temperature and for latent heat of freezing
1629         in all processes (rain, run-off, ground storage)
1630      c) compute surface and ground temperature implicitly.
1631    o aim_v23 modification for new land model:
1632      a) Treat separately land / ocean / sea-ice surface fluxes
1633         to allow implicit computation of land & sea-ice surface temp.
1634      b) add snow precipitation.
1635    checkpoint52l_pre
1636    
1637    o fix problem (when 1 tile is empty) in min/max monitor.
1638    o fix bug in timeAve (u,vZetatave in common block)
1639    o no restoring terms under ice for pkg/seaice
1640    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1641    o bug fix for pkg/seaice pickups
1642    o change MNC call locations and add coordinate attributes
1643    o mask vorticity at the corner ; affects global_ocean.cs output
1644    o fix ini_curvilinear_grid ; test CS experiments with mpi
1645    o aim.5l_cs: modify sea-ice fraction input file ; update output
1646    o exf: Adding simple range check routine for exf fields after read
1647    
1648    checkpoint52k_post
1649    o removed top-level directory "diags"
1650      - we migrated these functions to pkg/timeave a long time ago
1651    o fixed bug introduced in pkg/monitor
1652    o accuracy ctrlprec = 32 insuffient for gradient checks using
1653      averaged fields (I/O via cost_averages)
1654      -> use ctrl.h in active_file*.F to control I/O precision.
1655    o paramter list of CALL ADTHE_MAIN_LOOP
1656    o added initial do_the_model_io to ecco
1657    o set all ...Freq to zero after cost_final
1658      taveFreq, dumpFreq, pChkptFreq
1659    o MAIN and ECCO differentiability restored
1660    
1661    checkpoint52j_post
1662    o fix nchklev in tamc.h for global_ocean...
1663    o Bringing flow and store directives up-to-date
1664    o Really weird thing!
1665      call do_the_model_io from the_main_loop with parameters
1666      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1667      TAF places a faulty re-call of initialise_varia
1668      after cost_final call which should not be there!
1669    checkpoint52j_pre
1670    
1671    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1672      error messages
1673    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1674    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1675      debug output
1676    o modfied mdsio_writefield.F to handle non-global files under exch2
1677    o update AIM Cubed-Sphere exp (aim.5l_cs):
1678      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1679    o update AIM Equatorial Channel exp:
1680      use standard aim_v23 pkg and change the SST fields to be more realistic.
1681    o globalFile now works with exch2
1682    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1683      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1684    o limit timeave output for hi-res integrations
1685    
1686    checkpoint52i_post
1687    o removed CPP_EEOPTIONS.h from verification/*/code
1688    o updated the tiling for global_ocean_pressure
1689    checkpoint52i_pre
1690    
1691    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1692      the old pkg/aim).
1693    
1694    checkpoint52h_pre
1695    o shortened offending lines in exch2_send_rx?.template
1696    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1697    o genmake2: add build & execute test for NetCDF code
1698    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1699      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1700    o added useSingleCPUIO flag to monitor.F and mon_out.F
1701    o added temporary hack for sea-ice dynamics on the cube:
1702      metric terms are ignored and it is assumed that
1703      there is no sea-ice on cube faces 1, 2, 4, and 5.
1704    
1705    checkpoint52f_post
1706    o added exch2 cube routines to pkg/exch2
1707    o modified hs94.cs-32x32x5 to use it
1708    o added new grid files to hs94.cs-32x32x5
1709    checkpoint52f_pre
1710    
1711    checkpoint52e_post
1712    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1713      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1714    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1715      to work with implicit vertical advection and AB ;
1716    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1717    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1718     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1719    checkpoint52e_pre
1720    
1721    o fix bug in impldiff when Nr=1 or Nr=2.
1722    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1723    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1724    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1725      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1726    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1727    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1728    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1729    
1730    checkpoint52d_post
1731    o re-tiled many expts to allow comparison in multi-processor mode
1732      - updated output accordingly
1733      - changed hs94.128x64x5 to use intial T from file rather than use the
1734        random number generator
1735    o add infrastructure in model routines for fizhi and gridalt packages
1736    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1737    o changes to permit hi-res, cubed-sphere, configuration
1738      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1739      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1740      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1741        of surface winds for the cube
1742      (A verification experiment, based on global_ocean.cs32x15, but with
1743       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1744       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1745       complete with example surface forcing files and matlab scripts to look
1746       at the output and compare it with that of global_ocean.cs32x15.)
1747    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1748       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1749       to conform to the common rule.
1750    o check-in the first version of the coupler + interfaces for multi-components
1751       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1752       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1753       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1754       - ocean and atmos. share the same horizontal grid (no interpolation).
1755       - exchanges between component and coupler is done in forward_step
1756    o new verification experiment, cpl_aim+ocn:
1757       coupled ocean - AIM atmosphere on cs32 grid.
1758    
1759    checkpoint52d_pre
1760    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1761    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1762    
1763    checkpoint52c_post
1764    o Fixing OPTIONS files for use of exf:
1765      - ALLOW_ECCO not needed
1766      - ECCO_CPPOPTIONS.h should not be included from
1767        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1768        as has been the case in the past
1769      - All cal/exf related options are currently set in
1770        single header file. Should remain so until we
1771        agree on a consistent new policy.
1772    o Removed all CPP options for cal package.
1773      cal has no more CPP options.
1774    o modified STOREs in GAD_ADVECTION
1775    o corrected key comp. for passkey
1776    
1777    checkpoint52b_post
1778    o new version: "thsice" of thermodynamic sea-ice pkg:
1779     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1780     - modify fluxes but do not change theta directly;
1781     - light cleaning of bulk_force pkg (still needed with thsice).
1782     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1783       + output_thsice.txt to test thsice & bulk_force pkgs.
1784    o put back grid & coriolis monitor output.
1785    checkpoint52b_pre
1786    
1787    o call "do_the_model_io" at the beginning (=> dump initial state)
1788    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1789    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1790      (need info on NUMBER_OF_PTRACERS)
1791    o missing PTRACERS headers in some routines
1792    o default tamc.h in pkg/autodiff supposed to crash
1793      to ensure proper customization
1794    
1795    checkpoint52a_post
1796    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1797      - moved surfaceTendencyTice from pkg/seaice to main code
1798      - subroutine FREEZE_SURFACE now limits only surface temperature
1799        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1800        => new output.txt for global_ocean.cs32x15 & global_with_exf
1801      - keep the old version of FREEZE for backward compatibility;
1802        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1803      - corresponding modifs for TAF directives
1804    o added surface flux output variables to TIMEAVE_STATVARS
1805    o time-averaged output for pkg/ptracers
1806    o fix problem with ECCO-related divided adjoint
1807      snapshot file was missing some ad-variables,
1808      but no warning issued by TAF
1809    
1810    checkpoint52a_pre
1811    o some bug fixes for #undef REAL4_IS_SLOW
1812    
1813    checkpoint52 = ecco_c52_e35
1814    o after testing adjoints of checkpoint51u_post
1815    
1816    checkpoint51u_post
1817    o this is the post-merge tag of the ecco-branch
1818      (needs another clean checkout and re-testing)
1819    o various natl_box_adjoint configs and results
1820      but no input fields
1821    o obcs adjoint not yet merged!
1822    o adding ECCO global 1x1 and 2x2 degree configs
1823    o updated/extended some store directives for seaice
1824    o pkg/ecco now containes ecco-specific part of cost function
1825    o top level routines the_main_loop, forward_step
1826      supersede those in model/src/
1827      previous input data.cost now in data.ecco
1828      (new namelist ecco_cost_nml)
1829    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1830    
1831    checkpoint51t_post
1832    o this is the pre-merge tag of the ecco-branch
1833    
1834    checkpoint51s_post
1835    o cleanup: removed various obsolete #define-s
1836    o pkg/grdchk
1837      - renamed 'ph-grd 3' to 'grad-res'
1838      - merged from ecco-branch
1839        (remaining bug fixes for obcs gradient checks)
1840      - additional high-precision output for testreport
1841        (grep for 'precision_grdchk_result')
1842    
1843    checkpoint51r_post
1844    o cleaned up or removed CPP_OPTIONS.h files
1845    o updated results for some of the tests to reflect the new
1846      optfiles (-ieee: -O0 instead of -O3)
1847    
1848    checkpoint51q_post
1849    o cd_code:
1850      - moved cd_scheme.F -> cd_code_scheme.F
1851      - separate read_checkpoint from cd_code_ini_vars.F
1852      - separated cd_code part from write_checkpoint
1853      - updated AD_SOURCE, generated .flow
1854      - added CD_CODE_VARS.h to the_main_loop
1855      - Moving cd_code specific store dir.s to pkg/cd_code
1856    o ctrl package totally restructured
1857      - pack/unpack now optional and decoupled from
1858        xx_/adxx_ I/O
1859      - ctrl_pack/unpack cleaned
1860        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1861      - confined inclusion of AD_CONFIG.h to where necessary.
1862    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1863    
1864    checkpoint51p_post
1865    o create initial cd_code package
1866      - WARNING: the initialization of fields within packages
1867        is broken because INI_FIELDS (where READ_CHECKPOINT is
1868        called) is called *before* PACKAGES_INIT_VARIABLES.
1869        This seems to be backwards since
1870        1) its important to initially zero the entire field including
1871           the "halo" region
1872        2) zeroing needs to be done *before* reading pickup info
1873           and the pickup call might or might not happen in any
1874           particular run
1875      - this needs an overhaul for R2
1876    o cleanup verification/*/code/GMREDI_OPTIONS.h
1877    o cleanup testreport
1878    
1879    checkpoint51o_post
1880    o bringing AD-related verif's up to date with genmake2
1881      - carbon/
1882      - global_ocean.90x40x15/
1883      - hs.94.1x64x5/
1884      - (front_relax/ )
1885    o (more) consistent directory structure for AD-related verif.'s
1886    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1887    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1888    o bug fix in find_alpha.F for MDJWF:
1889      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1890        change rho -> rho-rhoConst
1891      - replace call find_rho to find_rhonum
1892    o initialisation of rFlx extended to full array (required by TAF)
1893      and shifted to thermodynamics
1894    o removed PTRACERS.h in ptracers routine
1895    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1896    o Correcting initialisations for fVerU, fVerV.
1897    o helping TAF to recognize dependency on kUp for
1898      fVerU, fVerV
1899    o Replacing delZ by delR in pkg/ctrl/
1900    checkpoint51o_pre
1901    
1902    o undid all of cp51 pending some cleanups and discussion
1903    o added the [#include "AD_CONFIG.h"] statement to all files that need
1904       it for adjoint/tl #defines
1905     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1906     o removed tools/genmake since it no longer works
1907    
1908    checkpoint51n_post
1909    o modifications to make FREEZE flux visible to pkg/kpp
1910      - moved surfaceTendencyTice from pkg/seaice to main code
1911      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1912      - subroutine FREEZE now limits only surface temperature
1913        (this means new output.txt for global_ocean.90x40x15,
1914         global_ocean.cs32x15, and global_with_exf)
1915    o added surface flux output variables to TIMEAVE_STATVARS
1916    
1917    checkpoint51n_pre
1918    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1919    o added [#include "AD_CONFIG.h"] to all files that use the following
1920      defines:
1921      - ALLOW_ADJOINT_RUN
1922      - ALLOW_TANGENTLINEAR_RUN
1923      - ALLOW_ECCO_OPTIMIZATION
1924    
1925    checkpoint51m_post
1926    o incorporating changes to get TAMC/TAF working in genmake2
1927      - added new TAMC/TAF targets to the Makefile
1928      - various cleanups related to package handling
1929      - these changes should have no impact on the forward model
1930    
1931    checkpoint51l_post
1932    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1933     - faster algorithm for cal_addtime.F
1934     - higher precision arithmetic, where needed
1935     - pkg/exf *startdate variables changed from calendar date to
1936       model integration time
1937    
1938    checkpoint51l_pre
1939    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1940    o enable to apply restoring on S & T only in a latitude band.
1941    o update output (external_forcing_surf modif. change truncation errors)
1942       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1943    
1944    checkpoint51k_post
1945    o change default to: useNHMTerms=.FALSE.
1946     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1947       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1948     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1949        exp1, ideal_2D_oce
1950     - change data file of oceanic exp (leave the results unchanged for now)
1951       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1952    o set gravitySign automatically according to the vertical coordinate used
1953      (and change sign: back to "logical" value: +1 when R increases downward)
1954    o added an include barrier to the default CPP_OPTIONS.h and
1955      removed the #include "PACKAGES_CONFIG.h" from it
1956    o fix a bug in mom_fluxform (from chk51j_post)
1957    
1958    checkpoint51j_post
1959    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1960    o adjusted some flow directives (dynamics, thermodynamics)
1961    o added cubed-sphere case to test cost function
1962    o heckpoint_lev?_directives.h now include
1963      pkg-specific directives, whenever those are enabled.
1964    o Moving pkg-specific flow directives to corresponding pkg
1965      Moving pkg-specific differentiation list to corresponding pkg
1966      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1967      ---> conventions are
1968           - pkg_ad.flow
1969           - pkg_ad_diff.list
1970           - pkg_ad_check_lev?_dir.h
1971    
1972    checkpoint51i_post
1973    o merge of the branch-genmake2
1974      - knowingly breaks the older genmake
1975      - automatic generation of all ALLOW_${PKG_NAME} defines
1976      - new testreport supersedes older testscript
1977    o large number of package inclusion and header cleanups
1978    checkpoint51i_pre
1979    
1980    o new output for adjoin of global ocean vector invariant
1981    o fix for checkpoint of thermodynamic seaice and bulk_force
1982    o Steph gchem various cleanups
1983    
1984    checkpoint 51h_pre
1985    o fixed some single quotes
1986    o modify gchem pkg to be more versatile
1987    o modifications to clean up dic pkg
1988    o add pkg/cfc
1989    
1990    checkpoint51g_post
1991    o provide links for ARPACK and ADM*TLM
1992    o start removing verification/vero/
1993    o update AD-related stuff
1994      (in particular some IF-statements in model/src/ routines)
1995    o adding to verification/global_ocean.90x40x15/ adjoint of
1996      vector invariant setup
1997    
1998    checkpoint51f_post
1999    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2000    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2001      of tracer Green's fucntions for ocean inversion project.
2002    
2003    checkpoint51f_pre
2004    o Added on-the-fly spatial interpolation capability
2005        "USE_EXF_INTERPOLATION" to pkg/exf.
2006      - This is a temporary Cartesian-grid hack until
2007        the super-duper ESMF coupler becomes available.
2008      - See verification/global_with_exf/README for usage example.
2009      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2010        flags and modified pkg/seaice accordingly.
2011    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2012        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2013        non-local transport term.
2014    
2015    checkpoint51e_post
2016    o pkg/mom_vecinv:
2017      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2018      - add time-ave diagnostic of vorticity advection.
2019    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2020    o atmospheric geopotential: - include water vapor effect;
2021                                - use p^kappa in p* scaling.
2022    o land pkg: read initial state from files.
2023    o AIM : add stratospheric drag in the upper level
2024    
2025    checkpoint51d_post
2026    o change function ILNBLNK (=> last non-blank char.) to return zero
2027      (instead of the string length) when the string. char is empty
2028    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2029    o modif's to restore TAMC compatibility
2030      - avoid "_d" constructs in PARAMETER declarations
2031      - avoid interrupting lines by comment lines
2032    o Use cluster local disks for purely local I/O
2033      vs. globally visible disks needed for ctrl stuff
2034      (merged from ecco-branch)
2035      - new active_file_loc... and mdsio_..._loc routines
2036      - affected packages: autodiff, ctrl, grdchk, mdsio
2037    
2038    checkpoint51c_post
2039    o introducing integer flag debugLevel
2040      - debLevZero: suppress all output
2041      - debLevA: standard
2042      - debLevB: equivalent to current debugMode=.TRUE.
2043    o introducing pathname variable mdsioLocalDir for mdsio
2044      that can be specified at runtime
2045      (relevant for cluster I/O to local disk)
2046    `
2047    >>>checkpoint51b_post
2048    adjoint of ptracers
2049    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2050    o extended state in checkpoint_lev?, etc.
2051    o alternative ctrl/cost with tr1 or ptracer
2052    o new comlev1_bibj_ptracers
2053    o new ptracers.flow
2054    o made ptracers_forcing same as external_forcing_s
2055    o added verification for adjoint with ptracers
2056      - adm. grdchk fail so far
2057      - tlm. grdchk OK
2058      - checked tapelev/comlev recomputations: OK
2059    <<<checkpoint51b_pre
2060    
2061    checkpoint51a_post
2062    o added code for biogeochemistry package
2063      - new pkgs: dic, gchem
2064      - new subroutine in ptracers
2065    o modify code for biogeo packages
2066      - in model/src and pkg/ptracers
2067    
2068    checkpoint51
2069    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2070      - autodiff, ctrl, exf, grdchk, seaice
2071      kept separate packages
2072      - cost, ecco, obcs
2073    o updating verification/internal_wave, verification/lab_sea
2074      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2075    
2076    checkpoint50i_post
2077    o Preparing next differentiable checkpoint and sync
2078      of MAIN vs. ecco-branch
2079      - 1st step: this one is differentiable
2080      - 2nd step: next(! not this) checkpoint will have updated packages
2081                  from ecco-branch)
2082    
2083    checkpoint50h_post
2084    o new package "land": provide surface BC for AIM.
2085    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2086    o AIM: use true log-P extrapolation for near surface temp (= as in
2087        F.Molteni paper) ; update aim.5l_cs output.
2088    o New variable in PARM03 for more flexible pickups
2089    o somewhat cleaned package initialisation sequence for
2090      ctrl/ cost/ ecco/ in packages_... routines
2091    
2092    checkpoint50g_post
2093    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2094      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2095      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2096        made the default because of faster convergence than ADI
2097    
2098    checkpoint50f_post
2099    o exf totally restructured
2100      - replaced all exf_set_ routines by one generic exf_set_gen.F
2101        and made sure it's still differentiable
2102      - split exf_getffields.F into new exf_bulkformulae.F
2103      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2104      - updated adjoint/makefile and relevant verif. accordingly
2105    
2106    checkpoint50f_pre
2107     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2108          + change Evap over land. (update aim.5l_cs output)
2109     o added missing .cvsignores and made uniform across expts
2110     o changed configuration of tidal_basin_2d expt
2111     o added pkg/debug functions for tracing code in fatal crashes
2112     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2113     o new fn in pkg/monitor to stop model if solution grows too big
2114     o removed lots of single quotes from comments
2115    
2116    checkpoint50e_post
2117    o make KPP work with PTRACERS
2118     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2119       nearly a copy of kpp_transport_s
2120     - there is no analogue to SurfaceTendencyS, so I have to use
2121       gPtr(of the surface layer) instead
2122    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2123    checkpoint50e_pre
2124    
2125    checkpoint50d_post
2126    o change kpp output from multiple-record state files to single-record state
2127      files analogous to write_state.F
2128    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2129      analogous to the cg2d-related output.
2130    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2131      so that writing to internal file fn (with length 512) fails.
2132    checkpoint50d_pre
2133    
2134    checkpoint50c_post
2135    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2136    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2137    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2138    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2139    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2140    
2141    checkpoint50c_pre
2142    Merging from release1_p13:
2143    o bug fix for pkg/seaice dynamic solver
2144    o Added SEAICE_initialHEFF to pkg/seaice
2145    
2146    checkpoint50b_post
2147    o store u*,v* in gU,V instead of in guNm1,gvNm1
2148    o in order to put the momForcing out of the Adams-Bashforth:
2149      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2150      to timestep.F
2151    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2152    o re-generate output for highly sensitive test-exp:
2153       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2154    
2155    checkpoint50b_pre
2156    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2157    o corrected CPP option mismatch in exf_Bulk... functions for case
2158      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2159    
2160    checkpoint50a_post
2161    o Bug fix for merging between c50 and KPP.
2162      ikey was passed from thermodynamics to kpp_calc via
2163      common block rather than being recomputed in kpp_calc,
2164      in contradiction with new key itdkey.
2165      New key ikppkey created, and tamc.h headers updated.
2166    
2167    checkpoint50
2168    - 2nd step of merge with ecco-branch:
2169      merge changes in ecco-branch back into main trunk
2170    - bug fix in find_alpha
2171    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2172    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2173    - merged some sliced AD support routines
2174    
2175    checkpoint49
2176    merged from ecco-branch:
2177    o exf:
2178      - Enable initialisation of forcing fields to constant
2179        (runtime) values.
2180      - in exf_getffields.F
2181        Reduce i-/j-loop to interior domain, discarding overlaps.
2182        That also fixes wrong TAF-key computations for key_1, key_2
2183        with bulf formulae.
2184      - exf_init.F modify #ifdef for exf_init_evap
2185      - exf_getffieldrec.F, ctrl_getrec.F
2186        The following INT-usages are not safe:
2187          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2188          fldcount = int(fldsecs/fldperiod) + 1
2189        and were modified.
2190    o autodiff: checkpoint_lev...
2191      - updated storing for bulk formulae (some arrays were missing)
2192      - added state for seaice package
2193      - synchronized with main branch
2194    o DIVA:
2195      Modif.s in
2196      - the_main_loop.F
2197      - the_model_main.F
2198      and added cost_final_restore.F cost_final_store.F
2199      o With these changes, it is possible to fully separate
2200        the first forward run to compute the cost function (mdthe_main_loop)
2201        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2202        into separate model executions.
2203        This enables better tuning of DIVA to given queue sizes.
2204      o Loss of cost function value in consecutive DIVA runs is
2205        fixed by storing to 'costfinal' file.
2206      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2207        beginning/end of adjoint integration is accounted for.
2208      The current changes apply to TAF-1.4.26.
2209      TAF has one remaining bug, requiring one manual change
2210      (see MITgcm manual).
2211    o cal: synchronized between MAIN and ecco-branch
2212    
2213    checkpoint48i_post
2214    o Changes to restore differentiability of code w.r.t. previous tag
2215      (mostly adding new routines to make list and replacing
2216      pressure by totPhiHyd).
2217    o Updated and merged grdchk package
2218      - has both ADM and TLM checks
2219      - works for single- and multi-proc.
2220      - output cleaned
2221      - worked successfully for parallel DIVA
2222    o genmake:
2223      - Adding -platform=SP4
2224      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2225    o Modif. for DIVA:
2226      ctrl_unpack should not be called in intermediate DIVA interval.
2227      (similar thing would apply for active files such as
2228      tbar, sbar, psbar, which should not be reinitialised;
2229      only relevant for ecco-branch)
2230    
2231    checkpoint48h_post
2232    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2233    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2234    o Added SEAICE_initialHEFF to pkg/seaice
2235    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2236    
2237    checkpoint48g_post
2238    --- EOS:
2239    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2240      store total Potential in totPhyHyd for diagnostics & EOS.
2241    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2242    --- Pressure/geopotential gradient:
2243    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2244    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2245      ( changes results of global_ocean_pressure )
2246    o NLFS + z-coord.: add eta*Rho' contribution.
2247    o accurate phiHyd when using interface-W at the middle between 2 centers
2248     ( changes results of ideal_2D_oce )
2249    o includes r* 2nd term in potential gradient.
2250    
2251    checkpoint48f_post
2252    Merging from release1_p12:
2253    o Modifications for using pkg/exf with pkg/seaice
2254      - improved description of the various forcing configurations
2255      - added basic radiation bulk formulae to pkg/exf
2256      - units/sign fix for evap computation in exf_getffields.F
2257      - updated verification/global_with_exf/results/output.txt
2258    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2259      (SBO) core products, including oceanic mass, center-of-mass,
2260      angular, and bottom pressure (see pkg/sbo/README.sbo).
2261    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2262      to avoid negative values in shallow regions.
2263      - updated verification/natl_box/results/output.txt
2264      - updated verification/lab_sea/results/output.txt
2265    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2266    o Added useSingleCpuIO option (see PARAMS.h).
2267    o Updated useSingleCpuIO option in mdsio_writefield.F to
2268      work with multi-field files, e.g., for single-file pickup.
2269    o pkg/seaice:
2270      - bug fix in growth.F: QNET for no shortwave case
2271      - added HeffFile for specifying initial sea-ice thickness
2272      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2273    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2274      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2275    o pkg/seaice:
2276      - adjoint-friendly modifications
2277      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2278    
2279    checkpoint48e_post
2280    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2281    o dynamics: change definition of computational domain & adapt mom_fluxform
2282      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2283    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2284        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2285        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2286        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2287        inverted_barometer solid-body.cs-32x32x1
2288      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2289    
2290    checkpoint48d_post
2291    o in preparation for r*:
2292     a) use pre-computed gradient of hydrostatic potential:
2293        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2294     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2295        => affects results of glob_oce_pressure (different truncation error)  
2296      update output.txt of ideal_2D_oce & global_ocean_pressure
2297    
2298    checkpoint48d_pre
2299    o in preparation for r*:
2300      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2301      pass the 2 comp. of the grad. as arguments to momentum S/R.
2302      but for the moment, only used if it does not change the results.
2303    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2304    
2305    checkpoint48c_post
2306    Modifications in treatment of initial flux forcing controls
2307    to avoid extra storing of flux fields.
2308    
2309    checkpoint48c_pre
2310    o Added tidal_basin_2d experiment (currently 1D!)
2311    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2312    
2313    checkpoint48b_post
2314    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2315     (modification to pressure gradient not yet implemented)
2316    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2317      (for U & V) that are used for vertical advection of momentum.
2318    
2319    checkpoint48a_post
2320    o In preparation for r*, use temp. array to compute vertical transport
2321       in flux-form momentum pkg. => change results of few test-exp.
2322      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2323                        lab_sea, natl_box & plume_on_slope
2324    
2325    checkpoint48
2326    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2327    
2328    checkpoint47j_post
2329    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2330    o moved adexch from forward_step to addummy_in_stepping
2331    o added exch in ctrl_map_...
2332    o aveFreq.=0. at end of cost_final to avoid overwrite in
2333      reverse checkpointing loop
2334    o Yet more changes in gmredi:
2335      * adgmredi_calc_tensor
2336        avoiding all recomputation of gmredi_slope_limit
2337      * adgmredi_x/y/rtransport
2338        added flag for excessive storing to avoid recomp. of
2339        u/v/rtans, dTdx/y/z
2340        -> this is not really necessary and very memory-consuming
2341      * adgmredi_slope_psi:
2342        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2343      * gmredi_slope_limit
2344        re-activated full calculation of taperfct for case 'ac02'
2345    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2346    
2347    checkpoint47i_post
2348    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2349    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2350      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2351    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2352    o gmredi: fix few bugs.
2353    
2354    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2355    This will be a good checkpoint to plug into the ecco-branch.
2356    o few modif.'s to get latest version adjointed
2357      (mainly kick out code in ini_linear_phisurf)
2358    o modif's to run adjoint with exactConserv
2359    o case GM_BOLUS_ADVEC should be cleaned
2360      S/R gmredi_slope_psi should be cleaned
2361    o verification/carbon now has exactConserv=.TRUE.
2362    
2363    checkpoint47g_post
2364    o time-average AIM output: becomes independent from statvars time-average
2365      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2366    o After TAF bug fix:
2367      Tested adjoint of gmredi package.
2368      Tests were done with checkpoint47 rather than with latest
2369      checkpoint47f_post since the latter is broken for the adjoint
2370      verification/carbon/ contains both ADM and TLM gradient checks.
2371    Here they are, before they get changed/lost/stolen.
2372    Mostly modif.'s to fix numerical sensitivities.
2373    Gradient checks OK for
2374    - GM_taper_scheme:
2375      * clipping
2376      * ac02
2377      * linear
2378      * glw91
2379      * dm95
2380      * ldd97
2381    - GMREDI_OPTIONS:
2382      * GM_VISBECK_VARIABLE_K
2383      * GM_NON_UNITY_DIAGONAL
2384      * GM_EXTRA_DIAGONAL
2385      * GM_BOLUS_ADVEC
2386    in conjunction with data.gmredi parameters to be checked in
2387    in a few minutes under verification/carbon/code/
2388    
2389    checkpoint47f_post
2390    Merging from release1_p10:
2391    o modifications for using pkg/exf with pkg/seaice
2392      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2393        and SEAICE_EXTERNAL_FLUXES
2394      - pkg/exf CPP options EXF_READ_EVAP and
2395        EXF_NO_BULK_COMPUTATIONS
2396      - usage examples are Experiments 8 and 9 in
2397        verification/lab_sea/README
2398      - verification/lab_sea default experiment now uses
2399        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2400    
2401    checkpoint47e_post
2402    o created a tag prior to creating a branch
2403    
2404    checkpoint47d_post
2405    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2406      at the bottom boundary had an erroneous half slip boundary condition
2407    o added bottom drag and no slip boundary condition capabilities to
2408      oceanic pressure coordinates code
2409    o added new verification experiment global_ocean_pressure, this experiment is
2410      also described in the tutorial section of the manual
2411    checkpoint47d_pre
2412    
2413    checkpoint47c_post
2414    o Added a verification experiment for a global cubed-sphere ocean run
2415      -  verification/global_ocean.cubed32x32x30
2416      -  uses pkg/therm_seaice and pkg/bulk_forcing
2417    
2418    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2419    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2420      when using P-coordinate; only implemented for atmospheric config.
2421    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2422      NOTES: requires option NONLIN_FRSURF to be "#define".
2423    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2424    
2425    checkpoint47b_post
2426    Merging from release1_p9:
2427    o pkg/seaice
2428      - removed GOTO's and added taf directives
2429      - double precision constants to reduce the g77 (Linux)
2430        to F77 (SGI) differences reported in release1_p8
2431    o tools/genmake
2432      - added SGI options
2433    o verification/testscript
2434      - updated to that of checkpoint47a_post
2435    o verification/global_ocean.90x40x15/input/eedata
2436      - modified for SGI f77 compatibility
2437    o verification/lab_sea
2438      - added description of sea-ice model
2439      - added missing matlab routines
2440      - added test of thermodynamics parallelization
2441    
2442    checkpoint47a_post
2443    o new pkg: aim_v23
2444     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2445       for now, keep the same surface forcing as before.
2446     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2447     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2448     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2449    o add diagnostic of surface correction term in monitor output
2450    
2451    o bulk_force and therm_seaice
2452    - Two packages:  bulk_force (Bulk forcing)
2453      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2454    - Earlier integration from Stephaine Dutkiewicz
2455      and Patrick Heimbach.
2456    - Two ifdef statements for compile time,
2457       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2458    
2459    checkpoint47
2460    differentiable version of checkpoint46n_post
2461    o bug fix in quasihydrostaticterms
2462    o * "clean" adjoint code (in terms of extensive recomputations)
2463        can now be obtained for all GMREDI options (i.e. for
2464        - GM_VISBECK_VARIABLE_K
2465        - GM_NON_UNITY_DIAGONAL
2466        - GM_EXTRA_DIAGONAL
2467        - GM_BOLUS_ADVEC )
2468      * However, wrong gradient check problem remains unsolved.
2469      * New CPP options have been introduced for different
2470        tapering schemes
2471    o external_fields_load now part of differentiation list
2472    o pressure needs multiple storing;
2473      would be nice to have store_pressure at beginning or
2474      end of forward_step, e.g. by having phiHyd global (5-dim.)
2475      (NB: pressure is needed for certain cases in find_rho,
2476      which is also invoked through convective_adjustment).
2477    o recomputations in find_rho for cases
2478     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2479    o #define ATMOSPHERIC_LOADING should be differentiable
2480    o ini_forcing shifted to begining of initialise_varia
2481    o Incorporating QNVS line search routines into MITgcm
2482      (this is separate code, and therefore not under pkg)
2483      lsopt/, optim/
2484    o Updated verification/carbon/
2485      - #define GM_VISBECK_VARIABLE_K
2486      - GM_taper_scheme    = 'ldd97'    
2487    
2488    checkpoint46n_post
2489    Merging from release1_p8:
2490    o verification/natl_box:
2491      updating new external_fields_load routine
2492    o New package: pkg/seaice
2493      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2494      The sea-ice code is based on Hibler (1979-1980).
2495      Two sea-ice dynamic solvers, ADI and LSR, are included.
2496      In addition to computing prognostic sea-ice variables and diagnosing
2497      the forcing/external data fields that drive the ocean model,
2498      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2499      The implied surface heat flux is then stored in variable
2500      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2501      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2502      non-local transport term.  Because this call precedes model
2503      thermodynamics, temperature under sea-ice may not be "exactly" at
2504      the freezing point by the time theta is dumped or time-averaged.
2505      N.B.: fairly large differences in accuracy occur across
2506            different platforms/compilers; comparison between
2507            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2508            generated output gives:
2509       T           S           U           V
2510      C D M    c        m  s        m  s        m  s        m  s
2511      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2512      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2513      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2514    
2515      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2516    o GAD:
2517      - generated new common blocks to account for call of
2518        same gad routines with differing traceridentities
2519        (needed to modify tracerIdentity indices in GAD.h)
2520      - generated separate common blocks for case useCubedSphereExchange
2521        (Department of Futurology)
2522      - parameter lists to gmredi_?transport: added tracerIdentity
2523      - added new key indices to tamc.h
2524    o external_fields_load:
2525      - added this routine to TAF list
2526      - needed to make some common blocks global and additional storing
2527        along the same lines as exf package (checkpoint_lev?_directives.h)
2528    o exf:
2529      updated external forcing package
2530      - bug fixes carried over from ecco-branch
2531        (missing OBCS_OPTIONS.h in two routines)
2532      - enable easy to use "no forcing".
2533      - added exf I/O for atmospheric loading
2534      - added exf I/O for runoff data
2535      - transfered scaling between exf <-> MITgcm to exf namelist
2536    o Adding new verification experiment global_with_exf.
2537      This verification experiment is almost identical to the
2538      global_ocean.90x40x15 experiment, except that it uses
2539      the exf (and cal) package instead of the
2540      external_fields_load routine (cf README file).
2541    
2542    checkpoint46m_post
2543    o modified testscript to return -- when there are no lines of "%MON" output
2544    o added new flag "quasiHydrostatic" for QH mode
2545      and new routine quasihydrostaticterms()
2546    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2547      New routine: mom_u_coriolis_nh()
2548    o fixed sign of non-hydrostatic metric terms in u and v equations.
2549      Depend on correct sign of gravitySign.
2550    o added work.pc* to .cvsignore in aim directories using ifc
2551    o introduced flag for controllin non-hydrostatic metric terms
2552    o removed gravitySign from PARM04
2553    o switched to g77/ifc from pgf77 in aim experiments
2554    
2555    checkpoint46l_post
2556    o made convective adjustment work with pressure coordinates:
2557     - changed the direction of k-loop in convective_adjustment.F for the
2558       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2559     - adjusted the reference pressure k-index in convective_adjustment.F
2560     - adjusted the convection condition in convect.F (in analogy to
2561       calc_ivdc.F)
2562     - convective_adjustment no longer computes anything on the halos
2563     - removed the warnings about negative salinity from find_rho.F and
2564       find_alpha.F; instead the new routine look_for_neg_salinity, called
2565       at the beginning of find_rho, find_alpha, and find_beta, does a
2566       check of the entire slice, if CPP-option
2567       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2568    checkpoint46l_pre
2569    
2570    checkpoint46k_post
2571    o fixed the verification/global_ocean.90x40x15 experiment:
2572     - new bathymetry (the world according to A., JMC, and M.)
2573     - new initial fields and forcing fields (*.bin files)
2574     - new POLY3.COEFFS (for the next release one should switch to a full
2575       equation of state: JMD95P or MDJWF)
2576     - fixed several errors and redundancies in the data file
2577     - experiment uses looped cells
2578     - added matlab directory with diagnostic scripts for plotting of output
2579    
2580    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2581     - read AIM physics parameters from a file (data.aimphys)
2582     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2583    
2584    checkpoint46j_post
2585    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2586    o move wVel computation at the end of the time step, in S/R integr_continuity
2587    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2588    o update timeave pkg for wVel diagnostic.
2589    checkpoint46j_pre
2590    
2591    checkpoint46i_post
2592    o Clean up AIM package (and keep the results unchanged):
2593      include CPP_OPTION and use IMPLICT NONE in all routines ;
2594      declare all the variables _RL ; use _d 0 for all numerical constants.
2595      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2596    
2597    checkpoint46h_post
2598    o cleaned up the use of rhoNil and rhoConst.
2599      - rhoNil should only appear in the LINEAR equation of state, everywhere
2600        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2601        and the dynamical equations are all divided by rhoConst
2602    o introduced new parameter rhoConstFresh, a reference density of fresh
2603      water, to remove the fresh water flux's dependence on rhoNil. The default
2604      value is 999.8 kg/m^3
2605    o cleanup up external_forcing.F and external_forcing_surf.F
2606      - can now be used by both OCEANIC and OCEANICP
2607    checkpoint46h_pre
2608    
2609     Added code to convert surface volume flux (fresh water) into
2610     a mass flux when using P coordinates in the ocean (OCEANICP).
2611     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2612    
2613    checkpoint46g_post
2614    o Include a new diagnostic variable phiHydLow for the ocean model
2615      - in z-coordinates, it is the bottom pressure anomaly
2616      - in p-coordinates, it is the sea surface elevation
2617      - in both cases, these variable have global drift, reflecting the mass
2618        drift in z-coordinates and the volume drift in p-coordinates
2619      - included time averaging for phiHydLow, be aware of the drift!
2620    o depth-dependent computation of Bo_surf for pressure coordinates
2621      in the ocean (buoyancyRelation='OCEANICP')
2622      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2623        Theta, Salinity, and Pressure in the parameter list. This routine is
2624        presently contained in find_rho.F. This routine does not give the
2625        correct density for 'POLY3', which would be a z-dependent reference
2626        density.
2627    o cleaned up find_rho
2628      - removed obsolete 'eqn' from the parameter list.
2629    o added two new verification experiments: gop and goz
2630      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2631    checkpoint46g_pre
2632    
2633    checkpoint46f_post
2634    o Enable tangent linear (forward mode) gradient checks:
2635      - extended active file handling to g_... files
2636      - added TANGENT_SIMULATION to theSimulationMode
2637      - extended grdchk package accordingly
2638    o added tangent linear setup in verification/carbon/code_ftl
2639    o added adjoint setup in verification/front_relax/code_ad
2640    
2641    checkpoint46e_post
2642    o Added new equation of state -> MDJWF
2643      - EOS of McDougall et al., 2002, JAOT, submitted
2644      - caveat: the equation of state is only valid for a smaller (more
2645        realistic?) range of values than JMD95P/Z and UNESCO
2646      - added masks to the calculation of pressure in store_pressure
2647      - added more check values for density in check_eos (ini_eos.F), some of
2648        the old check values are out of the range of the MDJWF-eos, so don't
2649        expect perfect matches for those
2650    checkpoint46e_pre
2651    
2652    checkpoint46d_post
2653    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2654      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2655      case of pressure coordinates. eosType='JMD95Z' in
2656      combination with buoyancyRelation='OCEANICP' now causes an error.
2657    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2658      in find_alpha/beta.
2659    checkpoint46d_pre
2660    
2661    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2662      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2663    
2664    checkpoint46c_post
2665    o Changes necessary for ocean in p-coordinates
2666     -  Added new buoyancy relation = 'OCEANICP'
2667     -  Added new parameters = gravitySign (this used to be contained inside
2668        the factor dRdZ which I added when we first switched to R coordinates).
2669     X GM/Redi is not compatible (yet)
2670     X bottom drag and no-slip need to be debugged.
2671    checkpoint46c_pre
2672    
2673    checkpoint46b_post
2674    o Added new equation of state -> JMD95Z and JMD95P
2675      - EOS of Jackett and McDougall, 1995, JAOT
2676      - moved all EOS parameters into EOS.h
2677      - new routines ini_eos.F, store_pressure.F
2678    o Added UNESCO EOS, but not recommended because it requires
2679      in-situ temperature (see JMD95)
2680    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2681      unesco.f to be used with POLY3
2682    checkpoint46b_pre
2683    
2684    checkpoint46a_post
2685    o Added (atmospheric) pressure loading
2686      - new field in FFIELDS.h, etc...
2687      - new cpp flag ATMOSPHERIC_LOADING
2688    o Changed hFacC to _hFacC in calc_phi_hyd.F
2689    o Added SHORTWAVE_HEATING to some files for consistency
2690    checkpoint46a_pre
2691    
2692    checkpoint46
2693    further merges from release1_p5
2694    o new ctrl package
2695      - adopted from ECCO environment to enable optimization
2696      - added Eliassen Palm fluxes to controls
2697    o added Eliassen Palm flux controls to gradient check package
2698    o cost package
2699      - Compatible with new ctrl package
2700      - added Eliassen Palm cost hooks
2701      - modif's of existing cost functions
2702    o Adjoint-related bug fixes in kpp:
2703      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2704      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2705    o autodiff package
2706      - flow directives:
2707        + new for S/R do_the_model_io
2708        + enhanced for S/R checkpoint
2709        + new gmredi.flow
2710      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2711        disable adcommon.h/g_common.h by default.
2712      - fixed problem for adjoint of global_max
2713    o modified verification/carbon/
2714    o New setup for adjoint of global_ocean
2715    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2716    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2717    o incorporated hooks for sponge layer code (external_forcing.F)
2718    
2719    checkpoint45d_post
2720    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2721    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2722      (affects plume_on_slope "cg2d" output)
2723    o add new parameter deltaTfreesurf for free-surface time stepping
2724    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2725    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2726    o change phiMin in exp1 (to agree with documentation)
2727    o add new flags:
2728     - T,S forcing inside/outside Adams-Bashforth
2729     - turn off temp,salt advection and/or forcing
2730     - for each tracer, define internal flag for multiDimAdvection & A-B
2731    o monitor: change definition of KE to check conservation of Energy
2732    
2733    checkpoint45c_post
2734    o Removed f90 comments ("!")
2735    o Modified initialisations to enable exf package for MITgcm
2736      (without invoking ECCO_PACKAGE).
2737    o modifications to gradient check package (Martin Losch)
2738      - enable centered differences
2739      - modified format of standard output
2740    
2741    checkpoint45b_post
2742    o cleaned exchange calls in cg2d
2743    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2744    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2745      to configure barotropic setup (Martin Losch)
2746    o moved some initialisations within bi,bj loop in dynamics
2747      (TAF flow dependency)
2748    o in initialise_varia, moved call packages_init_variables
2749      before convective_adjustment_init
2750      (corresponding adjustment of TAF tape initialisation).
2751    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2752    
2753    checkpoint45a_post
2754    o compute Rho over the whole domain (extend iMin,jMin indices)
2755    o specific exchange for X-slice domain (case Ny=1)
2756    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2757    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2758    
2759    checkpoint44h_post = checkpoint45
2760    o Fix to restore differentiability:
2761      place at which packages_init_variables is called in
2762      initialise_varia is crucial for reverse control flow.
2763    o modifications in GMRedi to enable stable adjoint
2764      (corresponding modif's in thermodynamics, dynamics)
2765    o added missing hook for sponge layer code in external_forcing
2766    o modified test cost functions
2767    o storing in gad_advection (plus removal of write(0,*)!
2768    o missing headers TR1.h added in convective_adjustment routines
2769    o errorMessageUnit set non-equal zero in eeboot
2770      (conflict on some platforms, e.g. IBM SP3)
2771    o modified carbon verif.
2772    
2773    checkpoint44h_pre
2774    o vertical grid option: allow to put the Interface at the middle between
2775      2 cell-centers ; replace delZ in pkg/kpp by drF.
2776    o GM Advective form: Tracers are advected using the residual transport (=
2777      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2778    
2779    checkpoint44g_post
2780    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2781      results) ; ifdef missing in thermodynamics.F
2782    
2783    checkpoint44f_pre,checkpoint44f_post
2784    o added PTRACERS package
2785      This allows an arbitrary number of passive tracers to be integrated
2786      forward simultaneously with the dynamicaly model.
2787      + Implemented so far:
2788        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2789        - I/O and checkpointing
2790        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2791      + Not implemented so far:
2792        - KPP
2793        - OBCS
2794      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2795        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2796        line in data.pkg.
2797      + This package is disabled by default since it increases storage.
2798    
2799    
2800    o testscript: added -cleanup option
2801    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2802                 b) enable to filter 2D fields.
2803    
2804    checkpoint44e_pre,post
2805    o re-wrote convective adjustment to use pre-calculated weights
2806      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2807      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2808      Original calls to convect() still in place.
2809    
2810    chkpt44d_pre,post
2811    o added missing EXCLUDE_MONITOR flags
2812    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2813      (incompatible typ in MIN/MAX expressions caused problems
2814      on IBM SP3)
2815    o in genmake added variable MAKEDEPEND
2816      plus resetting for case SunOS
2817    o added timer_stats.c routine for IBM SP3
2818    o removed variables in dynamics
2819    !!! I forgot to create tag chkpt44d_pre !!!
2820    !!! But chkpt44d_pre = chkpt44c_post    !!!
2821    
2822    o real fresh water flux implemented with non-linear free-surface.
2823    
2824    chkpt44c_pre,post
2825    o few fix (mask in shap_s2, EmPmR in external_field_load,
2826      USE_NATURAL_BCS in solve_for_P);
2827    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2828    
2829    checkpoint44b_pre/_post
2830    o merge of relevant stuff from the ecco-branch:
2831      - genmake: removed $S64 overwrite for case SunOS
2832      - pkg/exf: update and corrections for field swapping and obcs
2833      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2834                  harmonized between ECCO and MITgcm
2835      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2836                      updated checkpointing_lev... lists for obcs
2837      - model/src: minor changes in forward_step, plot_field
2838                   added directive for divided adjoint in the_main_loop
2839      - pkg/mdsio: added mdsio_gl_slice
2840    
2841    o check parameters & config (chkpt44a_pre,post)
2842    o OBC and NonLin_FrSurf.
2843    
2844  checkpoint44  checkpoint44
 o apply Shapiro filter on T&S before calc_PhiHyd (stagger time stepping)  
2845  o fix bug in mom_vi_del2uv  o fix bug in mom_vi_del2uv
2846    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2847    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2848    o update AIM experiments (NCEP input files)
2849    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2850  o added some stuff for AD  o added some stuff for AD
2851    
2852  checkpoint43  checkpoint43

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