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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.765 by jmc, Fri Jan 12 19:18:24 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    checkpoint58u_post
8    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
9    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
10    o testreport: add option "-skipdir" to skip some test.
11    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
12      momentum calculation.
13    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
14    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
15      remove checkpoint.F and the_correction_step.F (no longer used);
16      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
17    o add option (linFSConserveTr) to correct for tracer source/sink due to
18      Linear Free surface
19    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
20    o pkg/thsice: fix reading mnc-pickups
21    
22    checkpoint58t_post
23    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
24    o pkg/mdsio:
25     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
26       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
27       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
28     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
29     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
30       either MDS_READ_FIELD or MDS_WRITE_FIELD )
31     - new S/R (to replace MDSWRITEMETA), which allows to write more
32       informations (variable names, time ...) to meta files.
33     - modify rdmds.m to give back the meta file content.
34    o pkg/diagnostics: change vertical interpolation to be safer, and more
35       flexible (define p-levels to interpolate to in data.diagnostics);
36      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
37       diagnostic pointer.
38    o pkg/seaice: more cleaning up of seaice_growth, added many comments
39    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
40    o fix multi-category seaice:
41     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
42       SEAICE_MULTICATEGORY
43     - fix short wave heat flux
44    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
45       and allow to use EVP solver. Change forward lab_sea: test both EVP
46       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
47    o Initial check-in of lab_sea adjoint
48      (very similar to natl_box_adjoint/code_seaice)
49      * used C-grid and EVP solver
50      * used KPP, GM/Redi
51      * uses inAdExact=.TRUE.
52      * gradient checks fail for both ADM and TLM
53        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
54        f.d. gradients actually seem more problematic than ADM, TLM gradients;
55        issue is related to forward mismatch between g77 an ifort
56    o pkg/seaice: overhaul of thermodynamics
57     - growth.F and groatb.F are replaced by new routine seaice_growth.F
58     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
59     - move a few global fields out of SEAICE.h into seaice_growth.F and
60       make them 2D (FICE/QNETO/ ...)
61     - remove FO (it is the same as QNETO)
62     - introduce a few local fields to avoid modifying external fields such
63       as atemp, etc.
64    
65    checkpoint58s_post
66    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
67      changed exf_set_gen.F so that
68        genperiod=0 means input file is one time-constant field and
69        genperiod=-12 means input file contains 12 monthly means
70    o CG2D: use pre-computed solver main-diagonal (stored in common block);
71      this affects truncation error ; generate new output file for exp. which
72      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
73        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
74        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
75        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
76        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
77        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
78    o start implementation of deep-atmosphere and anelastic formulation
79    o verification: remove 2nd copy of input files and use script "prepare_run"
80      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
81    o mom_common/vecinv/fluxform: fix a few initialisation isssues
82    o profiles: fix for multithreaded case
83    
84    o diagnostics: rename few diags:
85      s/'PRESSURE'/'RCENTER '/g
86      s/'TICE    '/'oceFreez'/g
87      s/'TAUX    '/'oceTAUX '/g
88      s/'TAUY    '/'oceTAUY '/g
89      s/'SWFLUX  '/'oceQsw  '/g
90      s/DIFx/DFxE/g
91      s/DIFy/DFyE/g
92      and add few ocean-forcing diagnostics:
93      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
94    o modifications to pkg/seaice/growth.F and budget.F, which change results of
95      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
96      as actual snow thickness.  It now refers everywhere to effective snow
97      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
98    
99    checkpoint58r_post
100    o modifications to pkg/seaice/growth.F, which change results of
101      lab_sea experiment: fixes pertain to melting snow over open water, to
102      masking EVAP under sea ice, and to using the correct AREA variable for
103      computations of EVAP, PRECIP, HSNOW, and GHEFF
104    o add ability to read bathy, salt, and theta using MNC (off by def)
105    o add flooding algorithm and advection of HSNOW for pkg/seaice;
106      both are turned off by default and do no change any results
107    o seaice advection with pkg/thsice: a step toward the use of non-linear
108      advection scheme, but #ifdef or commented out for now (requires more EXCH).
109    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
110      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
111      in natl_box (affects results @ truncation level: update output.txt)
112    o multi-threading and IO:
113      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
114      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
115        (needed to work with SingleCpuIO): tested in all verif. exp.
116    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
117      affects the results (but none of the verification test uses this scheme).
118    o Adding some pkg/diagnostics capability to pkg/seaice
119      (will certainly be subject to changes)
120    o ctrl: adding new control variables:
121      lwflux, lwdown, evap, snowprecip, apressure, runoff
122    
123    checkpoint58q_post
124    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
125      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
126      high_res_cube configuration by 4% on Columbia.
127    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
128      add (in global_with_exf/code) a version of EXF_INTERP_READ without
129      dynamical allocation (seems to work in multi-threaded).
130    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
131      single CPU io) so that TAF does not have to see EESUPPORT.h
132    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
133    
134    checkpoint58p_post
135    o obcs: stop if obcs is used with useCDscheme = .true.
136    o shelfice:
137     - fix a sign error so that no slip at shelfice interface works
138     - remove stop for combination non-hydrostatic code and shelfice. That does
139       not mean, that the results are correct, but at least they are numerically
140       stable
141    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
142    o added adjoint exch routined for all exch*3d* routines
143      and updated flow directives
144    
145    checkpoint58o_post
146    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
147      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
148    o change controling S/R for writing pickup file (new S/R do_write_pickup)
149      and clean-up reading/writing of pickup files.
150    o fix local version of read/write pickup (NH part) in rotating_tank/code
151    o simplify EXCH interface:
152     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
153     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
154    o added the regrid package
155    o shelfice:
156     - add a simple boundary layer scheme to reduce noise
157     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
158    
159    checkpoint58n_post
160    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
161       local variable (not in common block).
162    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
163      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
164      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
165        to work with SingleCpuIO.
166    o add "_d 0" to real constant of pkg/cfc subroutines ;
167       update exp. cfc_exemple & tutorial_cfc_offline output files.
168    o multi-threading and IO:
169      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
170        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
171      - barrier before and after reading.
172      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
173      - avoid using MDS_WRITELOCAL for LAND pkg output.
174      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
175        common-block variables ; Allows multi-threading with master-thread IO.
176    o change default MAX_NO_THREADS from 32 to 4 ;
177      and stop cleanly when MAX_NO_THREADS is too small.
178    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
179    
180    checkpoint58m_post
181    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
182       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
183    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
184       keep global_ocean.90x40x15 (for AD testing) with former secondary test
185       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
186    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
187        add MITgcm_tutorials (= code + all the tutorials)
188    o ecco, option to compute cost for total ssh (mean+anom)
189    o consistent with addition of ptracer and ssh in pkg/profiles
190    o profiles: adding ptracer and ssh
191    o testreport: change multi-test output-file name
192      (from output.txt.{name} to output.{name}.txt)
193    o profiles: now ok for mutli-tiles case
194    o seaice: add 4 parameters for different advection schemes for area,
195      (effective) seaice thickness, enthalphy, and snow height. Their default
196      is the standard parameter SEAICEadvScheme
197    o calc_gw:
198     - add cosFacU in zonal viscous flux (harmonic.visc.).
199     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
200       of tutorial_plume_on_slope.
201    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
202    o calc_gw: true flux-form, account for horizontal grid spacing.
203      update rotating_tank results, but not plume_on_slope (affected at
204      truncation level, 11 digits).
205    
206    checkpoint58l_post
207    o calc_gw:
208     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
209     - remove side-drag for now (need to fix it); update plume_on_slope results.
210     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
211    o commit code to make SST/SSS weights spatially variable
212      (based on either variable in-situ or variable initial T/S weights)
213    o pkg/ecco:
214      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
215        now based on horizontally varying weights wthetaLev, wsaltLev
216      * cost_averagesflags now returns year indices in addition to day, month
217      * sflux balance is performed on annual basis
218        (sflxumm, sfluxmm2, bal_sfluxmm)
219      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
220        including separate counting and multipliers
221    o pkg/rbcs
222      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
223    
224    checkpoint58k_post
225    o testreport:
226     - always build in dir. "build" (if not there, mkdir build instead of building
227       & running in input)
228     - run in dir run (if it exists), in build otherwise.
229     - call prepare_run (if input/prepare_run exists)
230     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
231    o pkg/exf modifications to interpolation and rotation routines for more
232       reasonable treatment of North Pole singularity: for tracers North Pole
233       value is set to northernmost zonal-mean value, for zonal velocity it is
234       set to zero, and for meridional velocity it is set to northernmost value.
235    o pkg/exf/exf_check_range.F
236     - add tile index to diagnostics and move stop statement to the very
237       end of the routine.
238    o pkg/diagnostics: (diagnostics_main_init.F)
239      define title of isomorphic variables according to the current config.
240    o pkg/thsice with pkg/seaice dynamics:
241    - fix domain of computation (interior only, required for exf) and do exchanges
242    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
243    o towards a standard way of dealing with multi-threading in MONITOR
244      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
245    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
246       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
247    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
248    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
249    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
250       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
251    o tracer advection:
252     - clean-up and simplify calc_common_factors.F
253     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
254       advection subroutine (but still not used within DST advection S/R)
255    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
256    
257    checkpoint58j_post
258    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
259      from file (collects calls previously in FORWARD_STEP)
260    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
261    o adjoint store dir. adjusted accordingly
262    o genmake2
263      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
264    
265    checkpoint58i_post
266    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
267      on wind stress (SEAICEstressFactor defaults to 1.)
268    o Total number of Timers is finite (<=40): comment out 2 non-essential one
269      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
270    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
271      on CS-grid: no longer loosing mass.
272    o exf & curvilinear-grid: no longer modify longitude xC & xG.
273    o pkg/ggl90: fix sloppy output and fix a bug
274    o pkg/seaice: added SEAICEuseEVPpickup parameter
275      - Set to false in order to start EVP solver with
276        non-EVP pickup files when using SEAICEuseEVP
277      - fix sign error in diffusion in seaice_calc_rhs
278    
279    checkpoint58h_post
280    * Modifications for bottom topography control
281      o replace hFacC by _hFacC at various places
282      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
283      o add non-self-adjoint cg2d_nsa
284      o update autodiff support routines
285      o re-initialise hfac after ctrl_depth_ini
286      o works for 5x5 box, doesnt work for global_ocean.90x40x15
287    * Adding verification for 5x5 box (4-layer) bottom topography control
288    
289    checkpoint58g_post
290    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
291       used for mean seasonal cycle, mean diurnal cycle); add an example
292       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
293    o pkg/ggl90:
294      - add parameter (minimum surface kinetic energy)
295      - fix bug (avoiding division by zero)
296    o couple pkg/thsice to pkg/seaice:
297      - modify advection in seaice to accomodate new scalar fields to be advected
298      - only muliDimAdection scheme work with seaice/thsice
299      - mapping of thsice-variables to seaice-variables, back and forth
300      - does not break the verification experiments, but does not give the
301        desired results either
302    o pkg/seaice
303      - make (default) second order advection a bit less confusing?
304    
305    checkpoint58f_post
306    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
307      to pkg/seaice):
308      - new routines thsice_map_exf and thsice_get_exf provide the interface
309      - add an additional formal parameter to thsice_solve4temp
310    o pkg/exf:
311      - add new fields wspeed, snowprecip (to be able to couple to thsice)
312      - correct Stefan-Boltzmann constant
313      - new parameter for longwave surface emittance
314      - separate some stuff from exf_bulkformulae into new routines  
315        exf_radiation, exf_wind
316      - add new parameters and constants: longwave emissivity for ocean, ice
317        and snow, evaporation parameters over ice
318      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
319        either wind from stress or stress from wind
320    o pkg/thSIce:
321    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
322    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
323       and THSICE_CALC_THICKN
324    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
325    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
326      to make debugging easier.
327    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
328    o pkg/bulk_force:
329      - clean-up comments and parameters ;
330      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
331    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
332      generate new output for test-experiment: aim.5l_cs.thSI
333    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
334      testreport accordingly
335    
336    checkpoint58e_post
337    o SEAICE_CGRID adjoint done
338    o R_STAR adjoint implemented.
339      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
340      * need to sort out init. of h0facc, etc.
341    o Make pkg/profile fully independent of ecco,cost, etc. stuff
342      to be able to use it in pure forward.
343    
344    checkpoint58d_post
345    o upgrade simple test-experiment to tutorial example:
346     step.1: duplicate the experiment and (step.2) will remove the old copy.
347      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
348      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
349      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
350      tutorial_global_oce_biogeo    <- copy of dic_example
351      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
352      tutorial_plume_on_slope       <- copy of plume_on_slope
353      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
354      tutorial_global_oce_optim     <- empty for now (David ?)
355      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
356     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
357    o correct a sign problem in cost_scat.F
358    o obcs and ptracers: fix boundary conditions for advections schemes
359      with larger stencil
360    o thsice adjoint: start
361    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
362      completeness
363    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
364      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
365    o ptracers adjoint:
366      * avoid extensive recomputatations
367      * fix missing re-init. of gptr (missed by TAF)
368    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
369      me to turn off the excessive output to STDOUT that this package produces
370    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
371      and add those terms in Vector-Invariant formulation.
372    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
373      if the control period (xx_hfluxperiod etc) is 0
374    o in profiles pkg, clean routines and fix details
375    o in ecco pkg, reading ssh data:
376      fix problem in case the model does not start at iter0=0
377    o fix mnc-pickup/restart for ptracers
378    o new package prifiles:
379      code to compute profile-based cost by Gael Forget
380      (modifs in ecco, ctrl, autodiff)
381    o Benign bug fix in initialization (spotted by M. Mazloff) of
382      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
383    
384    checkpoint58c_post
385    o adjoint: finish NLFS adjoint and provide reference output in
386      verification/global_ocean.90x40x15/results_ad_nlfs
387    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
388      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
389      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
390      with SEAICE_CGRID defined.
391    o move calendarDumps from "data" to "data.cal" and clean-up the code
392      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
393    o add useEXF & useCAL flags (for now, set in hard-coded way)
394    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
395      (were missing in NH mode, and wrong in quasihydrostatic mode).
396      waiting for Chris updated version of calc_gw to add those CALLs.
397    o fix bug in quasihydrostatic S/R ;
398      add a test for this option: global_ocean.90x40x15.qshyd
399    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
400      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
401    o add on/off flag useOffLine for package OFFLINE
402    o seaice:
403      - modify advection so that it works also on the C-grid
404      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
405        problem in multi-tile runs with C-grid
406      - add flags for clipping ice velocities and/or masking solver forcing
407      - fix drag (ocean on ice) formulation and a bug that caused noise in the
408        C-grid solver
409      - added a few comments to seaice_diffusion.F
410      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
411        are now exclusive)
412      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
413        required re-ordering the code a little:
414       + make DAIRN global variable (defined in SEAICE)
415       + move computation of the viscosities eta and zeta into a new separate
416         routine (because I need to recompute them in seaice_ocean_stress.F)
417    
418    checkpoint58b_post
419    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
420      update output.txt of exp. aim.5l_cs.thSI
421    o various mnc cleanups and improvements:
422      + shrink lookup tables by factor of ~4
423      + better error reporting when running out of lookup space
424      + able to handle longer path/file names (up to 500 chars)
425    o adjoint:
426      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
427      - TBD: "hidden" mom_vecinv recomp. in dynamics
428    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
429     (allow to differentiate between forcing components using new integer flags:
430      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
431     and add new flag to put Dissipation tendency out of Adams-Bashforth.
432    o ecco
433      - enable trend removal from SSH anomaly obs.
434    o adjoint
435      - a fix for PmEpR when #undef EXACT_CONSERV
436      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
437      - try to fix "hidden" recomp. in forward_step for NLFS
438        (NLFS seems broken sometimes after I checked it in)
439    o seaice:
440     - add c-grid version of the dynamic solver:
441       + three new routines that are the c-grid substitute lsr, dynsolver
442         and ostres
443       + put a few fields that were local to dynsolver into global common
444         blocks, so that I can move the computation of stresses etc into
445         seaice_lsr (saves coding but may break the adjoint).
446     - replace more hardwired parameters by runtime parameters
447     - add ice masks that mask the rhs of the implicit solvers where there
448       is no ice (commented out in seaice_dynsolver, because i am not sure
449       if this works properly), eventually this should replace the clipping
450       of ice velocities in seaice_dynsolver to +/-40cm/s.
451    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
452      include it only where its needed
453    o move balancing of fluxes before the call of external_forcing_surf
454    o seaice:
455      - correct units of turning angles (now they are really in degrees)
456      - move computation of GWATX/Y out of main routine into dynsolver
457      - initialize GWATX/Y in seaice_init
458    o Apply mask on Fresh-Water flux (needed for SSH forcing).
459      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
460    o seaice: add runtime flags for turning angles (default to zero)
461    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
462      and trend from exf forcing and ctrl control adjustments
463    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
464      (since checkpoint57x_post)
465    o change the default rotation period to 86164.s = the Earth rotation
466    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
467      and based on a reference stratification. Tested within hs94.cs-32x32x5.
468    o seaice advection: add code for choosing between the default (2nd order
469      central differences) and multiDim advection schemes provided by
470      pkg/generic_advdiff
471    o seaice:
472      - removed all references to SEAICE_GRID.h fields from
473        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
474        (cubed-sphere configuration will change a little)
475      - grid computations in seaice_init are obsolete now.
476      - cleaned up code a little so that is easier to read (hopefully).
477      - added new (better?) discretizations of default advection and diffusion
478        (turn on with SEAICEuseFluxForm)
479      - replace 1 in 3d global fields by kSurface in growth.F
480      
481    checkpoint58a_post
482    o seaice:
483      - bug fix in advect.F
484    o shelfice:
485      - separate shelfice load anomaly from pload (breaks with time
486        dependent forcing), => introduce constant field shelficeLoadAnomaly.
487        Its default is 0., but it may be computed more cleverly from (unknown)
488        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
489        done offline. A good approximation of the pressure load anomaly is
490        necessary to avoid large initial adjustment processes underneath
491        deep-reaching shelfice.
492      - small fix in ISOMIP shelfice_thermodynamics
493      - add more sophisticated thermodynamics of Hellmer (1989), this is
494        now the default
495      - give a few constants more intuitive names
496    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
497      if bulk formulae are used in long integration (especially EmPmR). Turn
498      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
499      if balancePrintMean, the imbalance that is substracted is printed to
500      STDOUT.
501    o fix bug (typo) in obcs_apply_eta.F
502    o add a new package shelfice which enables us to model the circulation
503      underneath shelf-ice with draughts of hundreds of meters.
504     - works
505     - to do: + include improved thermodynamics
506              + check whether kSurfC (from model/inc/SURFACE.h) can be used
507                instead of new field kTopC
508              + can we use topoFile, Ro_surf and existing code in ini_depth.F
509                instead of new field R_shelfIce and new code in ini_depth.F
510                and ini_mask_etc.F?
511              + adjust vertical mixing schemes?
512    o seaice pkg:
513     - add a cpp-flag to include a simple formula for a salinity dependent
514       freezing point of sea water at the surface
515     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
516       meridional stresses are now different (and hopefully correct)
517    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
518       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
519       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
520    o pkg/diagnostics: add options and parameters for regional-statistics
521       diagnostics ; define regions by reading a region-mask from a file
522       (might add other options later)
523    o pkg/bulk_force:
524     - add option and parameters to use AIM surface-flux formulae.
525     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
526       others forcing fields (defined in PARM05, parameter file "data") are loaded
527       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
528     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
529     - use the right EXCH call for uwind,vwind (to work on CS-grid).
530     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
531       and parameters (note: calcWindStress replaces .NOT.readwindstress).
532     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
533    
534    checkpoint58
535    o add "--embed-source" option to genmake2 which, when the supporting
536      tools can be compiled (as determined by genmake2) will turn on the
537      embed_files package which then embeds the entire MITgcm source code
538      (*.[fFhc] + Makefile) used for the build within the executable
539      - requested by CNH but off by default
540      - adds a paltry <9MB to the mitgcmuv executable in most cases
541      - only writes the output when useEMBEDSRC in eedata is true
542    o clean up 3-dim. relaxation codes:
543      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
544      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
545      * Thanks to Tom Haine for testing!
546    
547    checkpoint57z_post
548    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
549      affects output (@ truncation level) of exp. plume_on_slope ; updated.
550    o fix the pickup behavior for obcs in combination with ptracers
551    o fix a bug in ptracers_external_fields_load
552    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
553      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
554    o transfered surface NH pressure to eta field (if exactConserv).
555    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
556         and update lab_sea output.txt file.
557    o completing 3-dim. relaxation code: additional term
558         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
559      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
560      * At compile time, in "EXF_OPTIONS.h" set
561          #define  ALLOW_CLIMTEMP_RELAXATION
562          #define  ALLOW_CLIMSALT_RELAXATION
563      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
564          tauThetaClimRelax3Dim = 15552000.0,
565          tauSaltClimRelax3Dim  = 15552000.0,
566      * 3 cases:
567          1) Use a constant-in-time 3-dim. field
568          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
569          3) Real-time relax. to time-evolving prescribed field
570    o Adding Laplacian-type smoothness constraint on
571      initial and boundary (forcing) controls (ic, bc)
572      * enable at compile-time via
573        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
574      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
575      * Absolute scale somewhat unclear so far
576      * no area weighting was included since no other cost term does so far
577    
578    checkpoint57y_post
579    First step for a NLFS adjoint
580    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
581    o new init. routines for calc_r_star, calc_surf_dr
582    o still need to deal with ini_masks_etc
583    o testreport seemed happy
584    checkpoint57y_pre
585    
586    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
587    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
588    o add new offset feature to offline pkg (plus minor cleanup)
589    o cfc fixes for final year of integration
590    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
591      be in GCHEM_OPTIONS).
592    
593    checkpoint57x_post
594    o fix testreport Pb in multiple test experiment.
595    o cleanup our namelist syntax in verification:
596      - make it more F95 standards compliant (some work still needed)
597      - allows the vast majority of our tests to work with gfortran
598    o Non-Hydrostatic:
599     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
600     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
601    o Allow to apply AB on T,S rather than on AB(gT,gS):
602     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
603     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
604       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
605     - need a "clever" read_pickup to restart from the other AB formulation
606    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
607    o remove some unused variables (reduces number of compiler warnings)
608    o adjoint
609      * Disable useVariableViscosity for adjoint for time being
610        (there are a number of extensive recomputations)
611      * Initialize certain variables needed for adjoint
612    
613    checkpoint57w_post
614    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
615                 fix the singleCpuIO RS version of MDSWRITEFIELD
616       and add a WARNING if using globalFiles=T with multi-processors.
617    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
618      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
619    o tracer advection scheme:
620      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
621       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
622       was not very convenient).
623      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
624       (further tests needed for the implicit DST & Flux-Limiter schemes).
625    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
626      and sRef for convenience, handy, when you want to initialize
627      ptracers in a large domain with a constant non-zero value. Also,
628      untangle ptracers_init.F a little.
629    
630    checkpoint57v_post
631    o change dome exp. to use variable viscosity in side-drag terms.
632    o remove all the files from the cfc_offline test since they are now
633      incorporated into tutorial_cfc_offline which has been producing
634      identical results for a few days of testing
635    o add new parameter: sideDragFactor to enable half-slip-side BC
636      and change side-drag S/R to use viscosity from mom_calc_visc
637      (can switch back by setting sideDragFactor=0.); affects results at
638      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
639       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
640    o vorticity & strain are now computed without masking, to account for
641      no-slip-side BC in variable viscosity calculation ; mask is applied
642      anyway later on, before computing advection/coriolis terms.
643    o modify exp4 to test new obcs support for reading from external files
644      and for passive tracers
645    o fix behavior of ptracers_monitor when monitor output is written to a
646      netcdf-file; still not independent of monitor.F (writes in the same
647      file).
648    o change default value of tRef (put a uniform, meaningful value for ocean
649      & atmos) and initialize sRef (was missing, as Martin mentioned).
650    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
651      to be proportional to enstrophy dissipation length.  Thus,
652       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
653      This is now consistent with Smagorinsky and with the manual.
654    
655    checkpoint57u_post
656    o OBCS and PTRACERS: add open boundary support for passive tracers
657      - either use homogenous (pseudo) v.Neumann conditions or prescribe
658        OB-values from file; this is not different from the way theta and salinity
659        are treated
660      - however, Orlanski-radiation conditions are not supported, and the model
661        will stop if you use pTracers and Orlanski at the same time.
662      - beefed up the rountine obcs_external_fields_load: now only those open
663        boundary values are overwritten with values from files for which there
664        are really files, otherwise the OB-fields remain untouched. This makes
665        it possible to use different OBs at different ends of the domain (as
666        with EXF)
667    o reduce number of exch calls in shap_filt (s2).
668    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
669      truncation level) 4/5 MLAdjust test results (11&12 digits match).
670    
671    checkpoint57t_post
672    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
673    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
674      same truncation, independent of the face number: affects affects several
675      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
676    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
677      note that biharmonic viscosity + no-slip was not tested in any experiment.
678    o fix bug in non-linear free-surf side-drag ; generate new output for
679      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
680    o make mnc honor the writeBinaryPrec flag for most kinds of output
681    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
682    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
683      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
684    o add brackets in multi-terms sum to get same truncation, independent of
685      the face number (manage to get exactly same value of gU,gV at the cs-edge)
686      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
687    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
688      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
689      a maximum grid-scale Reynolds number.  Also, changes all length calculations
690      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
691      Suggested values of viscosity parameters found in mom_calc_visc.
692      Many new viscosity diagnostics available.
693    
694    checkpoint57s_post
695    o Add clearing-house for viscosity calculations, mom_calc_visc and
696      correct numerous bugs in LeithD and Smagorinsky discretizations.  
697      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
698      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
699      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
700      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
701      The Strain-Tension form is now called with useStrainTensonVisc=.true.
702      ViscAhStrain and viscAhTension are now retired.
703    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
704    o In response to JMC's bug report, genmake2 now ignores any soft-links
705      that it finds in the *current* directory when searching for files.
706      Soft-links found in any other source directories will still work as
707      they did before.
708    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
709      a C routine to unlimit the stack size
710    o mnc-ify pkg/aim snapshot vars
711    o mnc-ify pkg/land as requested by Daniel
712    o various changes to mnc including:
713      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
714      - output can now be grouped so that all files within a group
715          change the ITER portion of their names in lock-step together
716      - can now read ("global") PER-FACE (in addition to PER-TILE) files
717          and works with both EXCH1 and EXCH2 (but needs more testing)
718      - writing works for all verification test cases w/ g77 on Linux
719    
720    checkpoint57r_post
721    o make MNC variable initialization happen earlier
722    o add diagnostics for (almost) each term of the momentum Eq.
723    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
724    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
725    o remove MINIMAL_TAVE_OUTPUT option ;
726      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
727    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
728      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
729    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
730    o add time-dependent SST, SSS control
731    o cost terms in ecco/ modularized (new cost_generic.F)
732    o cost_averages routines are modularized (new cost_averagesgeneric.F)
733    o new infrastructure for seaice model vs. obs misfits in seaice/
734      * driver from the_main_loop.F is seaice_cost_driver.F
735      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
736      * gradient check in Exp. 6a of natl_box_adjoint/
737    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
738      (see README file)
739    
740    checkpoint57q_post
741    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
742    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
743      - bug was reported by Jean-Michel and Ian Fenty
744    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
745      update exp. cpl_aim+ocn output.
746    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
747      Needed for high-res. runs with large global files
748      to be able to limit tapelev size
749    o Changed some tests for adjoint:
750      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
751      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
752      * global_ocean.90x40x15/ back to default 3-level checkpointing
753    o Modifications to enable scripted COMMON to MODULE conversion
754      * verification/OpenAD/code/ has necessary scripts and description;
755      * converts, compiles and runs successfully;
756    
757    checkpoint57p_post
758    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
759    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
760      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
761    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
762    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
763      (was already the case for dissipation with mom_vecinv,
764       and also the case for grad.PhiHyd when staggered-timeStep)
765      This will allow to put dissipation out-off the AB time-stepping.
766     Unfortunately, affects truncation error. Update output of exp. that "fails"
767      (cg2d matching number) and leave the others for later: front_relax(10),
768      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
769      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
770    
771    checkpoint57o_post
772    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
773      (2) its ready to be documented during the 20050801 DocFest
774    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
775      for ideal_2D_oce and lab_sea on linux_ia32_g77
776    o set to #undef CTRL_SET_OLD_MAXCVARS_30
777      in global1x1_tot/code_seaice_adj to access indices 32, 33
778      (worth another tag)
779    
780    checkpoint57n_post
781    o adding precip control xx_precip 32
782    o adding swflux control xx_swflux 33
783    o Replacing 10 forcing penalty cost routines by 1 generic.
784    o Implementing partitioning in time-mean and variable adjustment
785      for atmos. state.
786    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
787    o in natl_box_adjoint:
788      * updated exp 1 to 10
789        (but does not have time-mean vs. variable split results yet)
790    o updated global1x1/*_seaice_adj/
791      to incorporate latest changes
792    o enable useSingleCpuIO for mdsio vector routines
793      (applies in particular to tapelev I/O)
794    o removed inefficient K-loop in all active_file*control*.F
795    
796    checkpoint57m_post
797    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
798      and advect_cs (use EXCH-2 and standard cs-32 grid files).
799    o pkg/exch2: filling of face-corner halo regions is optional
800      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
801    
802    checkpoint57l_post
803     tag before updating tutorials (pre-release-2)
804    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
805       for output and interpolation of input fields onto model grid)
806    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
807       Affects results of exp. rotating_tank ; update output.txt.
808    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
809          and taking the square quantity and/or using a fraction-weight field.
810    o fix aim_diagnostics_init.F mate numbers.
811    o add mnc output capability to diagnostics/diagstat and update
812      our cvsignore files for the ACSII output generated
813    
814    checkpoint57k_post
815    o lab_sea now uses diagnostics package and provides a suite of
816      new EXF diagnostics output.
817    
818    checkpoint57j_post
819    o exf
820      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
821        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
822        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
823      * extended diagnostics output
824        - now includes all EXF variables
825        - hs, hl moved to common block
826        - separate S/R for diagnostics, called after ctrl vector is added
827        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
828        - EXFqnet contains true Qnet (i.e. includes qsw)
829      * updated verif. lab_sea, global_with_exf
830      * Rearranging hflux (exf_mapfields -> exf_getforcing)
831        to ensure that diagnostics sees a true EXFqnet
832    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
833    o diagnostics pkg: change pointers so that 1 diagnostic can be used
834      several times with different frequencies.
835    o mnc-ify the thsice package as requested by Daniel Enderton
836      - the monitor--MNC output needs work
837      - many attributes need to be added (most are currently blank)
838    o mnc-ify theaim_v23 package as requested by Daniel Enderton
839      - many attributes need to be added (most are currently blank)
840    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
841    o add Sadourny like discretization to the 4th.O vorticity advection scheme
842    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
843      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
844         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
845    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
846     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
847    
848    checkpoint57i_post
849    o Diagnostics package was changed: diagnostic allocation is now deactivated
850      by setting an empty file name in the namelist (used to be by setting 0 frequency)
851    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
852      add 1rst Order upwind vertical Shear.
853    o add a quick fix for A/B checkpointing in OFFLINE mode
854    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
855      end-run around the C/Fortran linking horror in eesup/src/timers.F
856    o added pkg/runclock: allows user to terminate run based on wall clock
857    o added non-hydrostatic scaling parameter: nh_am2
858    o pkg/my82: futile attempt to make results compiler-independent by adding
859      some "_d 0", etc. no effect.
860    o for mnc output, fill the 'T' coordinate var with myTime and create a
861      separate 'iter' variable for iteration count
862    o pkg/diagnostics:
863      add new capability: output of Global/Regional & per-level statistics ;
864      tested against monitor output (including land & thSIce) on various exp.
865    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
866    
867    checkpoint57h_done
868      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
869      data.diagnostics, data.gchem, data.ptracers) is done.
870    
871    o pkg/diagnostics: prepare for Global/Regional statistics.
872      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
873    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
874      and rename it: DIFFERENT_MULTIPLE
875    
876    checkpoint57h_post
877    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
878    o pkg/diagnostics: change output frequency, now in seconds (instead
879      of Nb of iterations). This requires to change data.diagnostics.
880    checkpoint57h_pre
881    
882    o in mnc, let the user create the output dir if both mnc_outdir_date
883      and mnc_outdir_num are false
884    o add fflags() to pkg/diagnostics which allows one to specify, on a
885      per-file basis, the file precision [default behavior is unchanged]
886    o added diagnostics to pkg/kpp, including computation of mixed layer
887      depth based on a temperature/density criterion
888    o updated verification/natl_box to test the new pkg/kpp diagnostics
889    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
890    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
891    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
892      not mnc -- this mistake was found by JMC and is now corrected
893    
894    checkpoint57g_post
895    o add Adams-Bashforth 3rd Order time stepping:
896      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
897      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
898    checkpoint57g_pre
899    
900    o make lambda[Theta,Salt]ClimRelax spatially varying
901      (default remains spatially uniform constant based on tau)
902    o added new control variables
903      * init. uVel, vVel, etanN
904      * lambda[Theta,Salt]ClimRelax
905    o separate masks used for ctrl_pack/unpack 'from write_grid' output
906      (suggested by G. Forget)
907    
908    checkpoint57f_post
909    o add parameter "baseTime" = model base time = time at iteration zero
910      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
911      account for baseTime shift
912    o move Coriolis arrays from PARAMS.h to GRID.h
913    checkpoint57f_pre
914    
915    o mnc-ifying the seaice package
916    o introduced an alternative length scale calculation for use in the limiting
917      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
918    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
919    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
920      as well as grad(vort3).  Made it compatible with both approximate form
921      for the cubed sphere and full form of these gradients.  Added flag
922      useFullLeith to select between approximate and full form.  
923    o add "d0" in getcon.F to reduce differences between compilers/platforms
924      update output.txt of exp. fizhi-gridalt-hs
925    o change port_rand funtion to allow to set the seed.
926    o fix obscure MNC bug involving conversion between reals and integers
927      - it caused no problems with certain (eg. gcc, ifc) compilers but the
928        new version is now more standards-compliant
929    o adjoint-related modifications
930      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
931      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
932      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
933    
934    checkpoint57e_post
935    o Adding eddy stress controls a la Ferreira et al.
936    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
937    
938    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
939      update output.txt of exp. fizhi-gridalt-hs
940    o add more "Z" dimensions and associated coordinate vars to MNC
941    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
942    o parameter calendarDumps: when set, approximate months (30-31 days) and years
943      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
944      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
945      months and years.  Requires pkg/cal.
946    o diagnostics: add pickup functionality
947      - off by default for backwards compatibility
948      - current version only uses MDSIO -- MNC will be added
949    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
950    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
951    
952    checkpoint57d_post
953    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
954    o modify verification/ideal_2D_oce so that it tests the creation of mnc
955      output from the diagnostics package
956    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
957    o make genmake2 more portable by using ".$FS" instead of ".f" for more
958      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
959    o add coordinate variables to the MNC output from the diagnostics package
960    o change MNC-flags default value: true when useMNC=TRUE
961    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
962      the ability (off by default) to read the grid information using MNC
963    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
964    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
965    o do snap-shot diagnostics at the middle of the time-interval (instead of
966      at the end).
967    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
968      new test for AIM with thSIce + slab-ocean
969    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
970    o move state variable diagnostics to the beginning of the time step ;
971      (note: still needs some work specially for snap-shot diagnostics)
972      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
973    
974    checkpoint57c_post
975    o Change testing option (-ieee) to get closer agreement between g77 & ifort
976    o generate new output.txt files on faulks with g77 & the new -ieee option
977    checkpoint57c_pre
978    
979    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
980      update output.txt of exp. global_ocean.90x40x15
981    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
982      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
983    o add saltFlux(+File) forcing capability with periodicExternalForcing
984    o allow to use pkg diagnostics for GM-Redi & ThSIce output
985    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
986    o improvements for the MNC output from DIAGNOSTICS:
987      - correct handling of the unlimitied dimension
988      - all dims now have associated coordinate variables
989      - variables located at U, V, and Corner ("Z") points are now written
990        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
991        *all* data points are output
992    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
993    o added pkg/seaice/seaice_monitor.F
994    o mdsio_readfield.F can now read files visible only to master MPI process.
995    o pkg/seaice: some test code for ice-modified ocean stress
996    o exf_getffields interpolation defaults to bilinear for all scalar forcing
997      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
998      spurious negative numbers for precipitation and humidity.  Will cause
999      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1000    o pkg/ctrl/
1001      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1002        May be enabled via doPackDiag
1003      *  introduce z-scaling of
1004         + gradient (doZscalePack) and
1005         + control (doZscaleUnpack)
1006    o pkg/mdsio/
1007      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1008      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1009    
1010    checkpoint57b_post
1011    o simplify options in diagnostics_fill arguments (remove weird combinations)
1012    o fix MNC coordinate variables so that they now contain per-face index
1013      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1014      general, EXCH2 grids are only aligned to a "local" coordinate system
1015    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1016    o Implement instantaneous output within pkg diagnostics:
1017      setting a negative frequency in data.diagnostics produces
1018     "snap-shot" output (as opposed to time-average if freq > 0)
1019    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1020      NOTE: change ptracer diagnostics name: use 2 characters to work with
1021            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1022    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1023      becomes the coordinate variable for the 'T' dimension
1024    o add CF-style coordinate variables to MNC
1025      - just a first cut:  numbers are meaningless on the cubesphere and
1026        missing along the T axis but otherwise it works!
1027    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1028    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1029    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1030      this is based directly on what the model compute, so that the content of
1031      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1032    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1033    o clean up build options files for SunOS, in particular
1034      - remove -traditional from xmakedepend
1035      - change -xarch=v9 to -xarch=native for f77
1036      - restore use of make (not gmake)
1037      - add CC=gcc if using g77
1038    o changes per discussion of AM, JMC, & EH3 today:
1039      - move redundant "grid" variables out of "state" -- in preparation of
1040        creating proper CF-style coordinate variables and in recognition
1041        that any/all grid variables can be easily copied (eg. w/NCO) from
1042        the grid files into any of the other NetCDF files
1043      - *always* output grid variables with MDSIO (this will eventually be
1044        changed)
1045      - output MNC grid file if useMNC is true
1046    o every instance of _END_MASTER() has been found and replaced with
1047      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1048      preprocessors
1049    o re-arrange diagnostics pkg initialisation:
1050     - allow each package to extend the available diagnostics list
1051     - add some checking and fix small problems (multi-threaded, ...)
1052     - new S/R diagnostics_fill (replace fill_diagnostics):
1053       look through the short list of active diag. (instead of the long list)
1054       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1055    
1056    checkpoint57a_post
1057    o this set of changes restores TAMC compatibility
1058      tested for global_ocean.90x40x15 adjoint on trough
1059      (what a pain)
1060    
1061    checkpoint57a_pre
1062    o some modifs in tools/build_options for sunos
1063    o call ctrl_pack for ctrl at end for optimcycle=0
1064    
1065    checkpoint57
1066    o add horizontal bi-harmonic viscosity for vertical velocity
1067      - new parameter viscA4W (defaults to viscA4)
1068      - affects only non-hydrostatic code
1069      - to be done: no-slip lateral boundary conditions
1070    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1071    o implement Implicit Vertical advection for pTracers
1072    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1073      (implemented also for implicit vertical diffusion & advection)
1074    o OBCS: extend application of tracer open boundary conditions
1075      to a strip beyond the boundary of width Olx/Oly
1076    o add call monitor to TAF set of required calls (flow directives)
1077      and include in natl_box_adjoint
1078    o untangle a few ifdefs related to cost, ctrl, autodiff
1079      untangel a few ALLOW_ECCO_OPTIMIZATION
1080    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1081      (theta2, salt2 in ecco_cost_weights)
1082    
1083    checkpoint56c_post
1084    o OBCS as control variables
1085      - update ctrl_ad_diff.list, obcs_ad_diff.list
1086      - remove balance of obcs controls from default
1087      - fix index bug nobcs in ctrl_init
1088      - fix dummy fields filen in ctrl_pack
1089      - add dummy weights for obcs
1090    o lsopt: comment out fort.94 output
1091    o optim:
1092      - remove unnecessary header files
1093      - adjusted namelists
1094      - add xerbla.F to Makefile
1095    o exf:
1096      - multiple modifications of exf_check_range
1097      - unit change in exf_init_runoff from [m/year] to [m/s]
1098    o mdsio:
1099      - i/o-vector change debugLevel from debLevA to debLevB
1100    
1101    checkpoint56b_post
1102    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1103      is called from DO_THE_MODEL_IO
1104      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1105      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1106      - clean up PTRACERS_WRITE_TIMEAVE a little
1107    o add another verification experiment that tests both the cfc-pkg and
1108      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1109      reactive tendencies treated inline with regular timestepping
1110    o testreport previously did a lousy job of comparing small numbers, so
1111      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1112      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1113      testreport.
1114    o ptracers_monitor: bug fix for MPI
1115    
1116    checkpoint56a_post
1117    o GCHEM: finish reorganizating the package
1118      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1119        (introduces another 3D-array for each passive tracer, but only if
1120        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1121        gchemTendency is not needed because the timestep is done separately)
1122      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1123      - GCHEM is now---more or less cleanly---separate from PTRACERS
1124      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1125        so clear to me how that should be done in a general way.
1126    o CFC: improve formatting of output in CFC_ATMOS
1127    o PTRACERS:
1128      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1129        that ALL experiments with ptracers enable can be checked. This makes
1130        GCHEM_MONITOR obsolete.
1131      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1132        monitorFreq
1133      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1134    o add PTRACERS (PTR0[1-5]) to testreport output
1135    o exf_check_range:
1136      * default changed to .TRUE.
1137      * will check values for niter0 if debLevA, every timestep if debLevB
1138      * STOP in exf_check_range if 'out of range'
1139      * range chosen generous to allow for potential extema
1140      TBD: a version with stricter range
1141           permitted range would be runtime parameters
1142    o GMredi:
1143      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1144      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1145      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1146    o GCHEM:
1147      - move call to GCHEM_FORCING_SEP, so that it is now called before
1148        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1149      - introduced a useGCHEM runtime flag and applied it everywhere.
1150      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1151        this flag is now only visible within GCHEM-pkg routines.
1152      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1153        be replaced by a 3D array that is computed before thermodynamics; for
1154        this, the tracer ID iTracer had to be included into the parameter list
1155        of ptracers_forcing
1156      - set up forward_step to call gchem_forcing, that will replace
1157        gchem_forcing_int in ptracers_forcing
1158      - cleaning up
1159    o small cleaning of exch2: remove files that are also in eesupp/src
1160    
1161    checkpoint56
1162    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1163    o mnc: cleanup "full" files--fixes out-of-memory problem
1164    o ECCO-GODAE
1165      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1166      * fully merged and updated from SIO code
1167        windstress sign change affects
1168        - exf_inscal_[u/v]stress
1169        - sign of xx_tau[u/v] adjustments
1170        - signs in cost_scat
1171      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1172      * natl_box_adjoint updated and compressed
1173      * 2-level checkpoint switch added
1174        (tested in EXP. 1 of natl_box_adjoint)
1175      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1176    o SVD
1177      * first complete, non-hacked version for SVD calculations
1178      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1179        performed via direct access files admtlm_vector.it????
1180        (via ctrl_[un]pack)
1181      * optimcycle is used for ARPACK iteration counter
1182        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1183      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1184        and add linear transforms where necessary
1185      * controls are initial/final SST, SSS (can be extended; need to check
1186        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1187    o mdsio: filename info to both stderr, stdout
1188    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1189      from sign change
1190    
1191    checkpoint55j_post
1192    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1193      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1194    o add consistent build directories and .cvsignore files to verification
1195    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1196    o make all subroutines 30 or less characters in length for certain older
1197      compilers to work (a thorough search only turns up two routines in
1198      pkg/ptracers)
1199    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1200      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1201    
1202    checkpoint55i_post
1203    o change arrays for total vertical diffusivity (2.D if explicit,
1204      3.D if implicit) ; each ptracer uses its own background value.
1205    o added mnc/NetCDF output capability to ocn_compon_interf
1206      - added bits to verification/cpl_aim+ocn so that it can run on
1207        ITRDA and other clusters without the mpirun "-wd" option
1208    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1209      configuration
1210    o give MNC the ability to create additional files rather than
1211      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1212      - the default is just less than 2GB which is a practical limit
1213        on many systems
1214    o Compute the non-local term using either KPP vertical diffusivity (=default)
1215       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1216    
1217    checkpoint55h_post
1218    o add verification test "vermix"
1219    o remove all the *_ioinc flags and replace with the single global
1220      outputTypesInclusive flag
1221    o allow to set a vertical profile of vertical diffusivity for T & S
1222    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1223    o useMNC moved from data.mnc to data.pkg
1224    
1225    checkpoint55g_post
1226    o Renaming carbon AD experiments to comply with testreport conventions
1227    o Updating adjoint of Held-Suarez hs94.1x64x5
1228    o Fixing directives for non-ECCO forward_step, after ECCO directives
1229      have been fixed to avoid recomp. of do_oceanic_phys
1230      Works well for global_ocean.90x40x15,
1231      but recomp. issue remains for carbon
1232    o Updating adjoint output for natl_box_adjoint after
1233      pkg/ecco has been modified (see taga c55d_post)
1234    
1235    checkpoint55f_post
1236    o rename to timeave_init_fixed
1237    
1238    checkpoint55e_post
1239    o some delicate re-shuffle of store directives to avoid one
1240      extra call of do_oceanic_physics
1241      affects ecco_the_main_loop.F, do_oceanic_physics.F
1242      checkpoint_lev1_directives.h
1243    o NB: this may break global_ocean adjoint temporarily,
1244      but it is clear how to fix it. Will do later, need this now.
1245    
1246    checkpoint55d_post
1247    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1248    o ecco_cost_weights is modified to 1x1 runs
1249    o modifs to allow observations to be read in as
1250      single file or yearly files
1251    o enable to read exf forcing fields as either
1252      single file or yearly files (flag useExfYearlyFields)
1253    checkpoint55d_pre
1254    
1255    o switch between 2-level and 3-level checkpointing
1256    o add ability of MNC to write local and "partial" (eg. 2D slices where
1257      the full 3D field is never actually stored) arrays to NetCDF files
1258      with the correct (that is, the complete multi-dimensional) set of
1259      array indicies
1260      - used in mom_vecinv() to write the diagFreq output
1261      - tested (demonstrated) in verification/aim.5l_cs
1262    o further mnc-ification
1263      - add verification/lab_sea to the list with mnc setups
1264      - fix undefined mnc v-names in cd_code
1265      - add kpp to mnc output (both snapshot and timeave)
1266    o non-hydrostatic code
1267      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1268        in calc_gw.F
1269      - defaults to viscAh
1270      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1271        friction or Leith) in non-hydrostatic mode, as long as there is
1272        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1273    o pkg/cost
1274      extend simple cost functions to treat time mean quantities
1275      (T,U,V) via cost_accumulate_state from cost_tile
1276    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1277        be 2 times larger than the minimum size the advection scheme requires.
1278        now get a perfect conservation of salt in advect_cs test-exp (updated)
1279    o GGL90 (Gaspar's TKE mixed layer)
1280      - add horizontal diffusion of TKE, requires exchanges in
1281        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1282        default. In OPA there is no horizontal diffusion of TKE but the
1283        mixing coefficients are computed from a horizontal average of TKE of
1284        6 points or so. I think that diffusion has a little more physical
1285        justification.
1286      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1287        was in vain)
1288      - mask tke-variable in ggl90_init
1289    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1290    o fix biharmonic diffusion on CS-grid.
1291    o more obcs stuff
1292      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1293        for reading boundary values. This routine is called from
1294        obcs_prescribe_read
1295      - updated obcs_check
1296      - changed sponge layer relaxation parameter units for days to seconds
1297      - turned off sponge layer by default
1298      - changed argument list of OBCS_CALC to myTime+deltaTclock
1299      - fixed about 35 bugs in obcs_external_fields_load
1300    
1301    checkpoint55c_post
1302    o obcs stuff
1303      - new runtime flags useOBCSprescribe, useOBCSbalance
1304      - re-arranged obcs_calc
1305      - moved exf_getobcs to obcs_prescibe_read
1306        obcs_prescibe_read is called after ORLANSKI stuff
1307        and independent of it (executable can contain all).
1308      - updated obcs_check
1309      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1310        These may be necessary only if tangential velocities are
1311        prescribed at OB, not sure, needs testing.
1312    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1313      which simplifies the calls and passes the ifc check-bounds test
1314    
1315    checkpoint55b_post
1316    o add a 2D scalar, Z location, exchange_2 routine.
1317    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1318      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1319      affects advect_cs results (for the wrong reason): update output.txt
1320    o use a more standard discretization for biharmonic viscosity ;
1321     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1322      affects results of dome set-up: update output.txt
1323    o fix gad_advection.F (CubedSphere part), back to version 1.23
1324    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1325    
1326    checkpoint55a_post
1327    o merged code to
1328      * prescribe/read time-dependent open boundaries
1329        (works in conjunction with exf, cal)
1330      * sponge layer code for open boundaries
1331      * each boundary N/S/E/W now has its own CPP option
1332        (healthy for the adjoint)
1333    
1334    checkpoint55
1335    o up-to-date adjoint of previous breaks
1336      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1337      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1338      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1339      - carbon: * remove tr1-related adjoint verification
1340                * add ptracer as control variable
1341    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1342      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1343    
1344    checkpoint54f_post
1345    o in verification/carbin/ remove experiment related to
1346      ALLOW_PASSIVE_TRACER (array tr1 etc)
1347      code_ad/ input_ad/ results_ad
1348    
1349    o add two new packages
1350      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1351        + subject to optimization (memory)
1352      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1353        + subject to reordering (many GOTOs in the original code)
1354        + so far opps is called for every (i,j) point, and then operates in
1355          the vertical; one may want to reorder the scheme in order operate in
1356          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1357          fields)
1358    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1359      - all verification tests compile and run with linux_ia32_g77
1360      - defaults are compatible with current input files--nothing
1361        should change if you were not previously using MNC
1362      - MNC output has been added in numerous places (eg. timeave)
1363        but there are still a few writes not yet do-able with MNC
1364        (this is in progress)
1365      - flags now allow for either/or/both use of MDSIO and MNC and
1366        documentation will soon follow
1367      - numerous small formatting cleanups for ProTeX
1368    o add version info (via BUILD_INFO.h) to MNC and stdout
1369    
1370    checkpoint54e_post
1371    o add two new packages
1372      - pp81 (Packanowski and Philander, 1981), Richardson number and
1373        stratification dependent mixing
1374      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1375      - these scheme operate in a similar manner as KPP (without ghat, of
1376        course), however there is only one diffusivity that is used for both
1377        temperature and salinity (and passive tracers)ç
1378    o add offline package
1379    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1380      provided by Stephanie Dutkiewicz
1381    o genmake2: add ability to search for C compilers and cleanup test output
1382      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1383    
1384    checkpoint54d_post
1385    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1386    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1387      leading to additional shift by 5 days each year of integration
1388       (i.e. leading to considerable offset over the years)
1389    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1390    o start with no AB and no initial filtering (staggerTimeStep):
1391      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1392    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1393      (external loading & cpl import/export stay in forward_step.F)
1394    o update coupling interface to work with new staggerTimeStep
1395    o change MDSIO ptracers_pickup.
1396    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1397    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1398    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1399    
1400    checkpoint54c_post
1401    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1402      this affects (truncation error) output.txt of test-exp:
1403       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1404    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1405    o change Qnet to always be the net heat flux, (+upward).
1406      affects (truncation error) output of natl_box exp.: updated
1407    o define the max number of passive tracers in PTRACERS_SIZE.h
1408    o start to test mnc routinely in exp0
1409    o add sea-ice loading (sIceLoad) as a new forcing field.
1410    
1411    checkpoint54b_post
1412    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1413       impressive on Altix and Opteron systems)
1414    o diagnostics can now write NetCDF files through the mnc package
1415    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1416    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1417    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1418      affects (truncation error) output of lab_sea & natl_box exp.: updated
1419    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1420    
1421    checkpoint54a_post
1422    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1423    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1424    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1425    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1426      + internal_wave (shift in writing cg2d_ini_res)
1427    checkpoint54a_pre
1428    
1429    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1430      - modified verification/lab_sea and natl_box_adjoint accordingly
1431    
1432    checkpoint54
1433    checkpoint53g_post
1434    o prepare splitting of thermodynamics: store convect.counter in common block
1435    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1436      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1437    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1438    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1439    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1440    o restore adjointability
1441    
1442    checkpoint53f_post
1443    o modifications that affect AIM experiment results (update output.txt):
1444      - no advection of S at top interface Nr (pkg/generic_advdiff)
1445      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1446    o AIM pkg:
1447      - include stability function into surf.Flux derivative relative to Tsurf
1448      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1449    
1450    checkpoint53e_post
1451    o merged cylindrical coord configuration
1452    o added rotating_tank experiment
1453    checkpoint53e_pre
1454    
1455    checkpoint53d_post
1456    o faulks upgraded: re-generate output.txt that have changed:
1457       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1458    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1459    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1460    o added Sadourny discretization of Coriolis
1461      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1462      - re-enabled use of omega3 (useAbsVorticity)
1463    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1464      vector-invariant equations
1465      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1466    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1467      hopefully without new bugs
1468      - still to do: biharmonic friction for non-hydrostatic w
1469    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1470    o regenerated output for global_ocean_ebm (using -ieee)
1471    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1472      of mom_common/
1473      - simple re-arrangement of instructions within computing loop
1474    checkpoint53d_pre
1475    
1476    checkpoint53c_post
1477    o new version of coupler for AIM+thSIce and Ocean models
1478     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1479     - land: change Evaporation of snow
1480     - aim with thSIce: fix bug in snow-precip.
1481    o changes to calc_gw.F
1482     - bug fix for w^2 term near the bottom boundary
1483     - (hopefully) improve the lateral slip boundary condtions for use with
1484        partial/looped cells
1485      - because the bug fix changes two verification experiments anyway (exp5
1486        and plume on slope), change the lateral boundary condition from half slip
1487        to the value of no_slip_sides
1488    o ebm package wasnt quite up to the parallel task. Fixed that.
1489    o Adjoint of EBM package + verification
1490      * TLM OK
1491      * ADM not sufficient accuracy yet (needs further testing)
1492    
1493    checkpoint53b_post
1494    o Commiting new energy balance model to repository
1495      * package is pkg/ebm
1496      * verif. is verification/global_ocean_ebm
1497      * references are in ebm_driver.F
1498    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1499    C        Global thermohaline circulation. Part I:
1500    C        Sensitivity to atmospheric moisture transport.
1501    C        J. Climate 12(1), 71-82
1502    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1503    C        Global thermohaline circulation. Part II:
1504    C        Sensitivity with interactive transport.
1505    C        J. Climate 12(1), 83-91
1506    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1507    C        Destabilization of the thermohaline circulation
1508    C        by atmospheric eddy transports.
1509    C        J. Climate 7(12), 1870-1882
1510    o Will need long integration testing.
1511    checkpoint53b_pre
1512    
1513    o created pkg/mom_common in preparation for variable viscosity code
1514    o renamed and split ini_mnc_io
1515    o pkg/land: only liquid water can diffuse or run-off
1516    o AIM using land: soil wetness availability account for snow
1517    o added printMapIncludesZeros to EEPARMS namelist
1518    
1519    checkpoint53a_post
1520    o restore TAMC compatiility for exf_constants.h
1521      (no usage of _d in .h)
1522    o Additional storing in KPP in an attempt to fix
1523      TAMC problem with adjoint of KPP code.
1524      (no success...)
1525      Identical code works fine with TAF.
1526    o Fixed verification/natl_box_adjoint experiments.
1527      Initial conditions for Experiments 4 and 5 are now
1528      set to "SEAICE_initialHEFF=0", which is more reasonable,
1529      and hence gives results closer to that of Experiment 2.
1530      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1531    
1532    checkpoint53
1533    o stable checkpoint with up to date adjoint
1534      TLM tests only run for 1st grdchk at the moment. Its unclear if
1535      this is a code problem or a problem with resetting code for g_
1536      variables that is being autogenerated wrong.
1537      Otherwise:
1538       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1539       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1540         are both still in chaos following their security messes.
1541    
1542    checkpoint52n_post
1543    o various build (mostly genmake2) changes including:
1544      - ability to build/run more easily within Cygwin and MacOS X
1545      - more complicated Makefiles with a stronger dependence on Gnu Make
1546    o pkg/seaice modifications
1547      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1548        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1549        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1550      - changed proxy for geostrophic velocity and updated
1551        verification/lab_sea/results/* accordingly
1552      - removed ADI dynamic solver from pkg/seaice
1553      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1554        they caused a segmentation fault under certain circumstances
1555      - removed unused field WATR
1556    o bug fix in exf-package:
1557      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1558         now reflect that.
1559    o small fixes in the cal-package:
1560      - set reference date to first of January for the 'model'-calendar
1561      - failing of cal_CheckDate in cal_FullDate now actually results in a
1562        warning
1563    o small modifications in exf-package to increase flexibility:
1564      - change climtempfreeze from a constant to a runtime parameter that
1565        is specified in data.exf_clim (default = -1.9)
1566      - introduce runtime parameter windstressmax (default = 2.0) that is
1567        specified in data.exf
1568    o fix in pkg/thsice:
1569      - update Evap (Tsf changes) to be consistent with Latent heat flux
1570      - maintain snow precipitation unchanged (even if Tsf >=0).
1571     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1572    
1573    checkpoint52m_post
1574    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1575      this does not change any of the results, because myIter=0 in swfrac always
1576      lead to jwtype=2 (the default anyway), but the call makes little sense
1577      as a default
1578    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1579    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1580      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1581    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1582    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1583    o extending useSingleCpuIO option to work with new exch2 I/O format
1584      - old-style, missing-tile I/O is still accessible by defining CPP
1585        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1586    o monitor package can write to NetCDF files and/or STDOUT
1587    o fix re-definition bug in MNC_GRID_INIT_ALL()
1588    o doc/api_reference added
1589      - a framework for building an API Reference Manual using all
1590        the "protex" comments embedded in the code
1591      - see pkg/generic_advdiff, pkg/mnc for examples
1592    o MNC:
1593      - make myThid the last argument for all subroutines
1594      - new default for the grid files: NO halos
1595      - add useMNC and other run-time flags
1596      - separate per-file-group handling of the unlimited dimension
1597      - early initialization of MNC w/ flags read at the eeboot stage
1598        and lookup tables set in initialize_fixed
1599      - write all MNC output to a freshly-created directory
1600    o thermodynamics sea-ice (thsice) is now tested with testreport.
1601    o test exp. advect_cs: use the standard cs32 grid ; update output.
1602    o Added functionality to grdchk:
1603      pick global i,j,k position (or nearest wet) where to perform check.
1604    
1605    checkpoint52l_post
1606    o new land formulation:
1607      a) use ground enthalpy as prognostic variable to ensure exact
1608         energy conservation.
1609      b) account for water temperature and for latent heat of freezing
1610         in all processes (rain, run-off, ground storage)
1611      c) compute surface and ground temperature implicitly.
1612    o aim_v23 modification for new land model:
1613      a) Treat separately land / ocean / sea-ice surface fluxes
1614         to allow implicit computation of land & sea-ice surface temp.
1615      b) add snow precipitation.
1616    checkpoint52l_pre
1617    
1618    o fix problem (when 1 tile is empty) in min/max monitor.
1619    o fix bug in timeAve (u,vZetatave in common block)
1620    o no restoring terms under ice for pkg/seaice
1621    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1622    o bug fix for pkg/seaice pickups
1623    o change MNC call locations and add coordinate attributes
1624    o mask vorticity at the corner ; affects global_ocean.cs output
1625    o fix ini_curvilinear_grid ; test CS experiments with mpi
1626    o aim.5l_cs: modify sea-ice fraction input file ; update output
1627    o exf: Adding simple range check routine for exf fields after read
1628    
1629    checkpoint52k_post
1630    o removed top-level directory "diags"
1631      - we migrated these functions to pkg/timeave a long time ago
1632    o fixed bug introduced in pkg/monitor
1633    o accuracy ctrlprec = 32 insuffient for gradient checks using
1634      averaged fields (I/O via cost_averages)
1635      -> use ctrl.h in active_file*.F to control I/O precision.
1636    o paramter list of CALL ADTHE_MAIN_LOOP
1637    o added initial do_the_model_io to ecco
1638    o set all ...Freq to zero after cost_final
1639      taveFreq, dumpFreq, pChkptFreq
1640    o MAIN and ECCO differentiability restored
1641    
1642    checkpoint52j_post
1643    o fix nchklev in tamc.h for global_ocean...
1644    o Bringing flow and store directives up-to-date
1645    o Really weird thing!
1646      call do_the_model_io from the_main_loop with parameters
1647      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1648      TAF places a faulty re-call of initialise_varia
1649      after cost_final call which should not be there!
1650    checkpoint52j_pre
1651    
1652    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1653      error messages
1654    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1655    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1656      debug output
1657    o modfied mdsio_writefield.F to handle non-global files under exch2
1658    o update AIM Cubed-Sphere exp (aim.5l_cs):
1659      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1660    o update AIM Equatorial Channel exp:
1661      use standard aim_v23 pkg and change the SST fields to be more realistic.
1662    o globalFile now works with exch2
1663    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1664      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1665    o limit timeave output for hi-res integrations
1666    
1667    checkpoint52i_post
1668    o removed CPP_EEOPTIONS.h from verification/*/code
1669    o updated the tiling for global_ocean_pressure
1670    checkpoint52i_pre
1671    
1672    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1673      the old pkg/aim).
1674    
1675    checkpoint52h_pre
1676    o shortened offending lines in exch2_send_rx?.template
1677    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1678    o genmake2: add build & execute test for NetCDF code
1679    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1680      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1681    o added useSingleCPUIO flag to monitor.F and mon_out.F
1682    o added temporary hack for sea-ice dynamics on the cube:
1683      metric terms are ignored and it is assumed that
1684      there is no sea-ice on cube faces 1, 2, 4, and 5.
1685    
1686    checkpoint52f_post
1687    o added exch2 cube routines to pkg/exch2
1688    o modified hs94.cs-32x32x5 to use it
1689    o added new grid files to hs94.cs-32x32x5
1690    checkpoint52f_pre
1691    
1692    checkpoint52e_post
1693    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1694      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1695    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1696      to work with implicit vertical advection and AB ;
1697    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1698    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1699     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1700    checkpoint52e_pre
1701    
1702    o fix bug in impldiff when Nr=1 or Nr=2.
1703    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1704    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1705    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1706      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1707    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1708    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1709    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1710    
1711    checkpoint52d_post
1712    o re-tiled many expts to allow comparison in multi-processor mode
1713      - updated output accordingly
1714      - changed hs94.128x64x5 to use intial T from file rather than use the
1715        random number generator
1716    o add infrastructure in model routines for fizhi and gridalt packages
1717    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1718    o changes to permit hi-res, cubed-sphere, configuration
1719      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1720      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1721      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1722        of surface winds for the cube
1723      (A verification experiment, based on global_ocean.cs32x15, but with
1724       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1725       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1726       complete with example surface forcing files and matlab scripts to look
1727       at the output and compare it with that of global_ocean.cs32x15.)
1728    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1729       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1730       to conform to the common rule.
1731    o check-in the first version of the coupler + interfaces for multi-components
1732       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1733       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1734       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1735       - ocean and atmos. share the same horizontal grid (no interpolation).
1736       - exchanges between component and coupler is done in forward_step
1737    o new verification experiment, cpl_aim+ocn:
1738       coupled ocean - AIM atmosphere on cs32 grid.
1739    
1740    checkpoint52d_pre
1741    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1742    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1743    
1744    checkpoint52c_post
1745    o Fixing OPTIONS files for use of exf:
1746      - ALLOW_ECCO not needed
1747      - ECCO_CPPOPTIONS.h should not be included from
1748        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1749        as has been the case in the past
1750      - All cal/exf related options are currently set in
1751        single header file. Should remain so until we
1752        agree on a consistent new policy.
1753    o Removed all CPP options for cal package.
1754      cal has no more CPP options.
1755    o modified STOREs in GAD_ADVECTION
1756    o corrected key comp. for passkey
1757    
1758    checkpoint52b_post
1759    o new version: "thsice" of thermodynamic sea-ice pkg:
1760     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1761     - modify fluxes but do not change theta directly;
1762     - light cleaning of bulk_force pkg (still needed with thsice).
1763     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1764       + output_thsice.txt to test thsice & bulk_force pkgs.
1765    o put back grid & coriolis monitor output.
1766    checkpoint52b_pre
1767    
1768    o call "do_the_model_io" at the beginning (=> dump initial state)
1769    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1770    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1771      (need info on NUMBER_OF_PTRACERS)
1772    o missing PTRACERS headers in some routines
1773    o default tamc.h in pkg/autodiff supposed to crash
1774      to ensure proper customization
1775    
1776    checkpoint52a_post
1777    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1778      - moved surfaceTendencyTice from pkg/seaice to main code
1779      - subroutine FREEZE_SURFACE now limits only surface temperature
1780        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1781        => new output.txt for global_ocean.cs32x15 & global_with_exf
1782      - keep the old version of FREEZE for backward compatibility;
1783        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1784      - corresponding modifs for TAF directives
1785    o added surface flux output variables to TIMEAVE_STATVARS
1786    o time-averaged output for pkg/ptracers
1787    o fix problem with ECCO-related divided adjoint
1788      snapshot file was missing some ad-variables,
1789      but no warning issued by TAF
1790    
1791    checkpoint52a_pre
1792    o some bug fixes for #undef REAL4_IS_SLOW
1793    
1794    checkpoint52 = ecco_c52_e35
1795    o after testing adjoints of checkpoint51u_post
1796    
1797    checkpoint51u_post
1798    o this is the post-merge tag of the ecco-branch
1799      (needs another clean checkout and re-testing)
1800    o various natl_box_adjoint configs and results
1801      but no input fields
1802    o obcs adjoint not yet merged!
1803    o adding ECCO global 1x1 and 2x2 degree configs
1804    o updated/extended some store directives for seaice
1805    o pkg/ecco now containes ecco-specific part of cost function
1806    o top level routines the_main_loop, forward_step
1807      supersede those in model/src/
1808      previous input data.cost now in data.ecco
1809      (new namelist ecco_cost_nml)
1810    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1811    
1812    checkpoint51t_post
1813    o this is the pre-merge tag of the ecco-branch
1814    
1815    checkpoint51s_post
1816    o cleanup: removed various obsolete #define-s
1817    o pkg/grdchk
1818      - renamed 'ph-grd 3' to 'grad-res'
1819      - merged from ecco-branch
1820        (remaining bug fixes for obcs gradient checks)
1821      - additional high-precision output for testreport
1822        (grep for 'precision_grdchk_result')
1823    
1824    checkpoint51r_post
1825    o cleaned up or removed CPP_OPTIONS.h files
1826    o updated results for some of the tests to reflect the new
1827      optfiles (-ieee: -O0 instead of -O3)
1828    
1829    checkpoint51q_post
1830    o cd_code:
1831      - moved cd_scheme.F -> cd_code_scheme.F
1832      - separate read_checkpoint from cd_code_ini_vars.F
1833      - separated cd_code part from write_checkpoint
1834      - updated AD_SOURCE, generated .flow
1835      - added CD_CODE_VARS.h to the_main_loop
1836      - Moving cd_code specific store dir.s to pkg/cd_code
1837    o ctrl package totally restructured
1838      - pack/unpack now optional and decoupled from
1839        xx_/adxx_ I/O
1840      - ctrl_pack/unpack cleaned
1841        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1842      - confined inclusion of AD_CONFIG.h to where necessary.
1843    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1844    
1845    checkpoint51p_post
1846    o create initial cd_code package
1847      - WARNING: the initialization of fields within packages
1848        is broken because INI_FIELDS (where READ_CHECKPOINT is
1849        called) is called *before* PACKAGES_INIT_VARIABLES.
1850        This seems to be backwards since
1851        1) its important to initially zero the entire field including
1852           the "halo" region
1853        2) zeroing needs to be done *before* reading pickup info
1854           and the pickup call might or might not happen in any
1855           particular run
1856      - this needs an overhaul for R2
1857    o cleanup verification/*/code/GMREDI_OPTIONS.h
1858    o cleanup testreport
1859    
1860    checkpoint51o_post
1861    o bringing AD-related verif's up to date with genmake2
1862      - carbon/
1863      - global_ocean.90x40x15/
1864      - hs.94.1x64x5/
1865      - (front_relax/ )
1866    o (more) consistent directory structure for AD-related verif.'s
1867    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1868    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1869    o bug fix in find_alpha.F for MDJWF:
1870      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1871        change rho -> rho-rhoConst
1872      - replace call find_rho to find_rhonum
1873    o initialisation of rFlx extended to full array (required by TAF)
1874      and shifted to thermodynamics
1875    o removed PTRACERS.h in ptracers routine
1876    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1877    o Correcting initialisations for fVerU, fVerV.
1878    o helping TAF to recognize dependency on kUp for
1879      fVerU, fVerV
1880    o Replacing delZ by delR in pkg/ctrl/
1881    checkpoint51o_pre
1882    
1883    o undid all of cp51 pending some cleanups and discussion
1884    o added the [#include "AD_CONFIG.h"] statement to all files that need
1885       it for adjoint/tl #defines
1886     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1887     o removed tools/genmake since it no longer works
1888    
1889    checkpoint51n_post
1890    o modifications to make FREEZE flux visible to pkg/kpp
1891      - moved surfaceTendencyTice from pkg/seaice to main code
1892      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1893      - subroutine FREEZE now limits only surface temperature
1894        (this means new output.txt for global_ocean.90x40x15,
1895         global_ocean.cs32x15, and global_with_exf)
1896    o added surface flux output variables to TIMEAVE_STATVARS
1897    
1898    checkpoint51n_pre
1899    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1900    o added [#include "AD_CONFIG.h"] to all files that use the following
1901      defines:
1902      - ALLOW_ADJOINT_RUN
1903      - ALLOW_TANGENTLINEAR_RUN
1904      - ALLOW_ECCO_OPTIMIZATION
1905    
1906    checkpoint51m_post
1907    o incorporating changes to get TAMC/TAF working in genmake2
1908      - added new TAMC/TAF targets to the Makefile
1909      - various cleanups related to package handling
1910      - these changes should have no impact on the forward model
1911    
1912    checkpoint51l_post
1913    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1914     - faster algorithm for cal_addtime.F
1915     - higher precision arithmetic, where needed
1916     - pkg/exf *startdate variables changed from calendar date to
1917       model integration time
1918    
1919    checkpoint51l_pre
1920    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1921    o enable to apply restoring on S & T only in a latitude band.
1922    o update output (external_forcing_surf modif. change truncation errors)
1923       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1924    
1925    checkpoint51k_post
1926    o change default to: useNHMTerms=.FALSE.
1927     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1928       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1929     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1930        exp1, ideal_2D_oce
1931     - change data file of oceanic exp (leave the results unchanged for now)
1932       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1933    o set gravitySign automatically according to the vertical coordinate used
1934      (and change sign: back to "logical" value: +1 when R increases downward)
1935    o added an include barrier to the default CPP_OPTIONS.h and
1936      removed the #include "PACKAGES_CONFIG.h" from it
1937    o fix a bug in mom_fluxform (from chk51j_post)
1938    
1939    checkpoint51j_post
1940    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1941    o adjusted some flow directives (dynamics, thermodynamics)
1942    o added cubed-sphere case to test cost function
1943    o heckpoint_lev?_directives.h now include
1944      pkg-specific directives, whenever those are enabled.
1945    o Moving pkg-specific flow directives to corresponding pkg
1946      Moving pkg-specific differentiation list to corresponding pkg
1947      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1948      ---> conventions are
1949           - pkg_ad.flow
1950           - pkg_ad_diff.list
1951           - pkg_ad_check_lev?_dir.h
1952    
1953    checkpoint51i_post
1954    o merge of the branch-genmake2
1955      - knowingly breaks the older genmake
1956      - automatic generation of all ALLOW_${PKG_NAME} defines
1957      - new testreport supersedes older testscript
1958    o large number of package inclusion and header cleanups
1959    checkpoint51i_pre
1960    
1961    o new output for adjoin of global ocean vector invariant
1962    o fix for checkpoint of thermodynamic seaice and bulk_force
1963    o Steph gchem various cleanups
1964    
1965    checkpoint 51h_pre
1966    o fixed some single quotes
1967    o modify gchem pkg to be more versatile
1968    o modifications to clean up dic pkg
1969    o add pkg/cfc
1970    
1971    checkpoint51g_post
1972    o provide links for ARPACK and ADM*TLM
1973    o start removing verification/vero/
1974    o update AD-related stuff
1975      (in particular some IF-statements in model/src/ routines)
1976    o adding to verification/global_ocean.90x40x15/ adjoint of
1977      vector invariant setup
1978    
1979    checkpoint51f_post
1980    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1981    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1982      of tracer Green's fucntions for ocean inversion project.
1983    
1984    checkpoint51f_pre
1985    o Added on-the-fly spatial interpolation capability
1986        "USE_EXF_INTERPOLATION" to pkg/exf.
1987      - This is a temporary Cartesian-grid hack until
1988        the super-duper ESMF coupler becomes available.
1989      - See verification/global_with_exf/README for usage example.
1990      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1991        flags and modified pkg/seaice accordingly.
1992    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1993        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1994        non-local transport term.
1995    
1996    checkpoint51e_post
1997    o pkg/mom_vecinv:
1998      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1999      - add time-ave diagnostic of vorticity advection.
2000    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2001    o atmospheric geopotential: - include water vapor effect;
2002                                - use p^kappa in p* scaling.
2003    o land pkg: read initial state from files.
2004    o AIM : add stratospheric drag in the upper level
2005    
2006    checkpoint51d_post
2007    o change function ILNBLNK (=> last non-blank char.) to return zero
2008      (instead of the string length) when the string. char is empty
2009    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2010    o modif's to restore TAMC compatibility
2011      - avoid "_d" constructs in PARAMETER declarations
2012      - avoid interrupting lines by comment lines
2013    o Use cluster local disks for purely local I/O
2014      vs. globally visible disks needed for ctrl stuff
2015      (merged from ecco-branch)
2016      - new active_file_loc... and mdsio_..._loc routines
2017      - affected packages: autodiff, ctrl, grdchk, mdsio
2018    
2019    checkpoint51c_post
2020    o introducing integer flag debugLevel
2021      - debLevZero: suppress all output
2022      - debLevA: standard
2023      - debLevB: equivalent to current debugMode=.TRUE.
2024    o introducing pathname variable mdsioLocalDir for mdsio
2025      that can be specified at runtime
2026      (relevant for cluster I/O to local disk)
2027    `
2028    >>>checkpoint51b_post
2029    adjoint of ptracers
2030    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2031    o extended state in checkpoint_lev?, etc.
2032    o alternative ctrl/cost with tr1 or ptracer
2033    o new comlev1_bibj_ptracers
2034    o new ptracers.flow
2035    o made ptracers_forcing same as external_forcing_s
2036    o added verification for adjoint with ptracers
2037      - adm. grdchk fail so far
2038      - tlm. grdchk OK
2039      - checked tapelev/comlev recomputations: OK
2040    <<<checkpoint51b_pre
2041    
2042    checkpoint51a_post
2043    o added code for biogeochemistry package
2044      - new pkgs: dic, gchem
2045      - new subroutine in ptracers
2046    o modify code for biogeo packages
2047      - in model/src and pkg/ptracers
2048    
2049    checkpoint51
2050    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2051      - autodiff, ctrl, exf, grdchk, seaice
2052      kept separate packages
2053      - cost, ecco, obcs
2054    o updating verification/internal_wave, verification/lab_sea
2055      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2056    
2057    checkpoint50i_post
2058    o Preparing next differentiable checkpoint and sync
2059      of MAIN vs. ecco-branch
2060      - 1st step: this one is differentiable
2061      - 2nd step: next(! not this) checkpoint will have updated packages
2062                  from ecco-branch)
2063    
2064    checkpoint50h_post
2065    o new package "land": provide surface BC for AIM.
2066    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2067    o AIM: use true log-P extrapolation for near surface temp (= as in
2068        F.Molteni paper) ; update aim.5l_cs output.
2069    o New variable in PARM03 for more flexible pickups
2070    o somewhat cleaned package initialisation sequence for
2071      ctrl/ cost/ ecco/ in packages_... routines
2072    
2073    checkpoint50g_post
2074    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2075      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2076      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2077        made the default because of faster convergence than ADI
2078    
2079    checkpoint50f_post
2080    o exf totally restructured
2081      - replaced all exf_set_ routines by one generic exf_set_gen.F
2082        and made sure it's still differentiable
2083      - split exf_getffields.F into new exf_bulkformulae.F
2084      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2085      - updated adjoint/makefile and relevant verif. accordingly
2086    
2087    checkpoint50f_pre
2088     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2089          + change Evap over land. (update aim.5l_cs output)
2090     o added missing .cvsignores and made uniform across expts
2091     o changed configuration of tidal_basin_2d expt
2092     o added pkg/debug functions for tracing code in fatal crashes
2093     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2094     o new fn in pkg/monitor to stop model if solution grows too big
2095     o removed lots of single quotes from comments
2096    
2097    checkpoint50e_post
2098    o make KPP work with PTRACERS
2099     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2100       nearly a copy of kpp_transport_s
2101     - there is no analogue to SurfaceTendencyS, so I have to use
2102       gPtr(of the surface layer) instead
2103    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2104    checkpoint50e_pre
2105    
2106    checkpoint50d_post
2107    o change kpp output from multiple-record state files to single-record state
2108      files analogous to write_state.F
2109    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2110      analogous to the cg2d-related output.
2111    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2112      so that writing to internal file fn (with length 512) fails.
2113    checkpoint50d_pre
2114    
2115    checkpoint50c_post
2116    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2117    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2118    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2119    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2120    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2121    
2122    checkpoint50c_pre
2123    Merging from release1_p13:
2124    o bug fix for pkg/seaice dynamic solver
2125    o Added SEAICE_initialHEFF to pkg/seaice
2126    
2127    checkpoint50b_post
2128    o store u*,v* in gU,V instead of in guNm1,gvNm1
2129    o in order to put the momForcing out of the Adams-Bashforth:
2130      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2131      to timestep.F
2132    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2133    o re-generate output for highly sensitive test-exp:
2134       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2135    
2136    checkpoint50b_pre
2137    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2138    o corrected CPP option mismatch in exf_Bulk... functions for case
2139      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2140    
2141    checkpoint50a_post
2142    o Bug fix for merging between c50 and KPP.
2143      ikey was passed from thermodynamics to kpp_calc via
2144      common block rather than being recomputed in kpp_calc,
2145      in contradiction with new key itdkey.
2146      New key ikppkey created, and tamc.h headers updated.
2147    
2148    checkpoint50
2149    - 2nd step of merge with ecco-branch:
2150      merge changes in ecco-branch back into main trunk
2151    - bug fix in find_alpha
2152    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2153    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2154    - merged some sliced AD support routines
2155    
2156    checkpoint49
2157    merged from ecco-branch:
2158    o exf:
2159      - Enable initialisation of forcing fields to constant
2160        (runtime) values.
2161      - in exf_getffields.F
2162        Reduce i-/j-loop to interior domain, discarding overlaps.
2163        That also fixes wrong TAF-key computations for key_1, key_2
2164        with bulf formulae.
2165      - exf_init.F modify #ifdef for exf_init_evap
2166      - exf_getffieldrec.F, ctrl_getrec.F
2167        The following INT-usages are not safe:
2168          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2169          fldcount = int(fldsecs/fldperiod) + 1
2170        and were modified.
2171    o autodiff: checkpoint_lev...
2172      - updated storing for bulk formulae (some arrays were missing)
2173      - added state for seaice package
2174      - synchronized with main branch
2175    o DIVA:
2176      Modif.s in
2177      - the_main_loop.F
2178      - the_model_main.F
2179      and added cost_final_restore.F cost_final_store.F
2180      o With these changes, it is possible to fully separate
2181        the first forward run to compute the cost function (mdthe_main_loop)
2182        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2183        into separate model executions.
2184        This enables better tuning of DIVA to given queue sizes.
2185      o Loss of cost function value in consecutive DIVA runs is
2186        fixed by storing to 'costfinal' file.
2187      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2188        beginning/end of adjoint integration is accounted for.
2189      The current changes apply to TAF-1.4.26.
2190      TAF has one remaining bug, requiring one manual change
2191      (see MITgcm manual).
2192    o cal: synchronized between MAIN and ecco-branch
2193    
2194    checkpoint48i_post
2195    o Changes to restore differentiability of code w.r.t. previous tag
2196      (mostly adding new routines to make list and replacing
2197      pressure by totPhiHyd).
2198    o Updated and merged grdchk package
2199      - has both ADM and TLM checks
2200      - works for single- and multi-proc.
2201      - output cleaned
2202      - worked successfully for parallel DIVA
2203    o genmake:
2204      - Adding -platform=SP4
2205      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2206    o Modif. for DIVA:
2207      ctrl_unpack should not be called in intermediate DIVA interval.
2208      (similar thing would apply for active files such as
2209      tbar, sbar, psbar, which should not be reinitialised;
2210      only relevant for ecco-branch)
2211    
2212    checkpoint48h_post
2213    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2214    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2215    o Added SEAICE_initialHEFF to pkg/seaice
2216    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2217    
2218    checkpoint48g_post
2219    --- EOS:
2220    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2221      store total Potential in totPhyHyd for diagnostics & EOS.
2222    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2223    --- Pressure/geopotential gradient:
2224    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2225    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2226      ( changes results of global_ocean_pressure )
2227    o NLFS + z-coord.: add eta*Rho' contribution.
2228    o accurate phiHyd when using interface-W at the middle between 2 centers
2229     ( changes results of ideal_2D_oce )
2230    o includes r* 2nd term in potential gradient.
2231    
2232    checkpoint48f_post
2233    Merging from release1_p12:
2234    o Modifications for using pkg/exf with pkg/seaice
2235      - improved description of the various forcing configurations
2236      - added basic radiation bulk formulae to pkg/exf
2237      - units/sign fix for evap computation in exf_getffields.F
2238      - updated verification/global_with_exf/results/output.txt
2239    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2240      (SBO) core products, including oceanic mass, center-of-mass,
2241      angular, and bottom pressure (see pkg/sbo/README.sbo).
2242    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2243      to avoid negative values in shallow regions.
2244      - updated verification/natl_box/results/output.txt
2245      - updated verification/lab_sea/results/output.txt
2246    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2247    o Added useSingleCpuIO option (see PARAMS.h).
2248    o Updated useSingleCpuIO option in mdsio_writefield.F to
2249      work with multi-field files, e.g., for single-file pickup.
2250    o pkg/seaice:
2251      - bug fix in growth.F: QNET for no shortwave case
2252      - added HeffFile for specifying initial sea-ice thickness
2253      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2254    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2255      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2256    o pkg/seaice:
2257      - adjoint-friendly modifications
2258      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2259    
2260    checkpoint48e_post
2261    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2262    o dynamics: change definition of computational domain & adapt mom_fluxform
2263      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2264    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2265        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2266        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2267        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2268        inverted_barometer solid-body.cs-32x32x1
2269      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2270    
2271    checkpoint48d_post
2272    o in preparation for r*:
2273     a) use pre-computed gradient of hydrostatic potential:
2274        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2275     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2276        => affects results of glob_oce_pressure (different truncation error)  
2277      update output.txt of ideal_2D_oce & global_ocean_pressure
2278    
2279    checkpoint48d_pre
2280    o in preparation for r*:
2281      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2282      pass the 2 comp. of the grad. as arguments to momentum S/R.
2283      but for the moment, only used if it does not change the results.
2284    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2285    
2286    checkpoint48c_post
2287    Modifications in treatment of initial flux forcing controls
2288    to avoid extra storing of flux fields.
2289    
2290    checkpoint48c_pre
2291    o Added tidal_basin_2d experiment (currently 1D!)
2292    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2293    
2294    checkpoint48b_post
2295    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2296     (modification to pressure gradient not yet implemented)
2297    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2298      (for U & V) that are used for vertical advection of momentum.
2299    
2300    checkpoint48a_post
2301    o In preparation for r*, use temp. array to compute vertical transport
2302       in flux-form momentum pkg. => change results of few test-exp.
2303      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2304                        lab_sea, natl_box & plume_on_slope
2305    
2306    checkpoint48
2307    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2308    
2309    checkpoint47j_post
2310    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2311    o moved adexch from forward_step to addummy_in_stepping
2312    o added exch in ctrl_map_...
2313    o aveFreq.=0. at end of cost_final to avoid overwrite in
2314      reverse checkpointing loop
2315    o Yet more changes in gmredi:
2316      * adgmredi_calc_tensor
2317        avoiding all recomputation of gmredi_slope_limit
2318      * adgmredi_x/y/rtransport
2319        added flag for excessive storing to avoid recomp. of
2320        u/v/rtans, dTdx/y/z
2321        -> this is not really necessary and very memory-consuming
2322      * adgmredi_slope_psi:
2323        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2324      * gmredi_slope_limit
2325        re-activated full calculation of taperfct for case 'ac02'
2326    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2327    
2328    checkpoint47i_post
2329    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2330    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2331      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2332    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2333    o gmredi: fix few bugs.
2334    
2335    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2336    This will be a good checkpoint to plug into the ecco-branch.
2337    o few modif.'s to get latest version adjointed
2338      (mainly kick out code in ini_linear_phisurf)
2339    o modif's to run adjoint with exactConserv
2340    o case GM_BOLUS_ADVEC should be cleaned
2341      S/R gmredi_slope_psi should be cleaned
2342    o verification/carbon now has exactConserv=.TRUE.
2343    
2344    checkpoint47g_post
2345    o time-average AIM output: becomes independent from statvars time-average
2346      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2347    o After TAF bug fix:
2348      Tested adjoint of gmredi package.
2349      Tests were done with checkpoint47 rather than with latest
2350      checkpoint47f_post since the latter is broken for the adjoint
2351      verification/carbon/ contains both ADM and TLM gradient checks.
2352    Here they are, before they get changed/lost/stolen.
2353    Mostly modif.'s to fix numerical sensitivities.
2354    Gradient checks OK for
2355    - GM_taper_scheme:
2356      * clipping
2357      * ac02
2358      * linear
2359      * glw91
2360      * dm95
2361      * ldd97
2362    - GMREDI_OPTIONS:
2363      * GM_VISBECK_VARIABLE_K
2364      * GM_NON_UNITY_DIAGONAL
2365      * GM_EXTRA_DIAGONAL
2366      * GM_BOLUS_ADVEC
2367    in conjunction with data.gmredi parameters to be checked in
2368    in a few minutes under verification/carbon/code/
2369    
2370    checkpoint47f_post
2371    Merging from release1_p10:
2372    o modifications for using pkg/exf with pkg/seaice
2373      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2374        and SEAICE_EXTERNAL_FLUXES
2375      - pkg/exf CPP options EXF_READ_EVAP and
2376        EXF_NO_BULK_COMPUTATIONS
2377      - usage examples are Experiments 8 and 9 in
2378        verification/lab_sea/README
2379      - verification/lab_sea default experiment now uses
2380        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2381    
2382    checkpoint47e_post
2383    o created a tag prior to creating a branch
2384    
2385    checkpoint47d_post
2386    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2387      at the bottom boundary had an erroneous half slip boundary condition
2388    o added bottom drag and no slip boundary condition capabilities to
2389      oceanic pressure coordinates code
2390    o added new verification experiment global_ocean_pressure, this experiment is
2391      also described in the tutorial section of the manual
2392    checkpoint47d_pre
2393    
2394    checkpoint47c_post
2395    o Added a verification experiment for a global cubed-sphere ocean run
2396      -  verification/global_ocean.cubed32x32x30
2397      -  uses pkg/therm_seaice and pkg/bulk_forcing
2398    
2399    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2400    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2401      when using P-coordinate; only implemented for atmospheric config.
2402    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2403      NOTES: requires option NONLIN_FRSURF to be "#define".
2404    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2405    
2406    checkpoint47b_post
2407    Merging from release1_p9:
2408    o pkg/seaice
2409      - removed GOTO's and added taf directives
2410      - double precision constants to reduce the g77 (Linux)
2411        to F77 (SGI) differences reported in release1_p8
2412    o tools/genmake
2413      - added SGI options
2414    o verification/testscript
2415      - updated to that of checkpoint47a_post
2416    o verification/global_ocean.90x40x15/input/eedata
2417      - modified for SGI f77 compatibility
2418    o verification/lab_sea
2419      - added description of sea-ice model
2420      - added missing matlab routines
2421      - added test of thermodynamics parallelization
2422    
2423    checkpoint47a_post
2424    o new pkg: aim_v23
2425     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2426       for now, keep the same surface forcing as before.
2427     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2428     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2429     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2430    o add diagnostic of surface correction term in monitor output
2431    
2432    o bulk_force and therm_seaice
2433    - Two packages:  bulk_force (Bulk forcing)
2434      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2435    - Earlier integration from Stephaine Dutkiewicz
2436      and Patrick Heimbach.
2437    - Two ifdef statements for compile time,
2438       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2439    
2440    checkpoint47
2441    differentiable version of checkpoint46n_post
2442    o bug fix in quasihydrostaticterms
2443    o * "clean" adjoint code (in terms of extensive recomputations)
2444        can now be obtained for all GMREDI options (i.e. for
2445        - GM_VISBECK_VARIABLE_K
2446        - GM_NON_UNITY_DIAGONAL
2447        - GM_EXTRA_DIAGONAL
2448        - GM_BOLUS_ADVEC )
2449      * However, wrong gradient check problem remains unsolved.
2450      * New CPP options have been introduced for different
2451        tapering schemes
2452    o external_fields_load now part of differentiation list
2453    o pressure needs multiple storing;
2454      would be nice to have store_pressure at beginning or
2455      end of forward_step, e.g. by having phiHyd global (5-dim.)
2456      (NB: pressure is needed for certain cases in find_rho,
2457      which is also invoked through convective_adjustment).
2458    o recomputations in find_rho for cases
2459     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2460    o #define ATMOSPHERIC_LOADING should be differentiable
2461    o ini_forcing shifted to begining of initialise_varia
2462    o Incorporating QNVS line search routines into MITgcm
2463      (this is separate code, and therefore not under pkg)
2464      lsopt/, optim/
2465    o Updated verification/carbon/
2466      - #define GM_VISBECK_VARIABLE_K
2467      - GM_taper_scheme    = 'ldd97'    
2468    
2469    checkpoint46n_post
2470    Merging from release1_p8:
2471    o verification/natl_box:
2472      updating new external_fields_load routine
2473    o New package: pkg/seaice
2474      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2475      The sea-ice code is based on Hibler (1979-1980).
2476      Two sea-ice dynamic solvers, ADI and LSR, are included.
2477      In addition to computing prognostic sea-ice variables and diagnosing
2478      the forcing/external data fields that drive the ocean model,
2479      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2480      The implied surface heat flux is then stored in variable
2481      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2482      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2483      non-local transport term.  Because this call precedes model
2484      thermodynamics, temperature under sea-ice may not be "exactly" at
2485      the freezing point by the time theta is dumped or time-averaged.
2486      N.B.: fairly large differences in accuracy occur across
2487            different platforms/compilers; comparison between
2488            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2489            generated output gives:
2490       T           S           U           V
2491      C D M    c        m  s        m  s        m  s        m  s
2492      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2493      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2494      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2495    
2496      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2497    o GAD:
2498      - generated new common blocks to account for call of
2499        same gad routines with differing traceridentities
2500        (needed to modify tracerIdentity indices in GAD.h)
2501      - generated separate common blocks for case useCubedSphereExchange
2502        (Department of Futurology)
2503      - parameter lists to gmredi_?transport: added tracerIdentity
2504      - added new key indices to tamc.h
2505    o external_fields_load:
2506      - added this routine to TAF list
2507      - needed to make some common blocks global and additional storing
2508        along the same lines as exf package (checkpoint_lev?_directives.h)
2509    o exf:
2510      updated external forcing package
2511      - bug fixes carried over from ecco-branch
2512        (missing OBCS_OPTIONS.h in two routines)
2513      - enable easy to use "no forcing".
2514      - added exf I/O for atmospheric loading
2515      - added exf I/O for runoff data
2516      - transfered scaling between exf <-> MITgcm to exf namelist
2517    o Adding new verification experiment global_with_exf.
2518      This verification experiment is almost identical to the
2519      global_ocean.90x40x15 experiment, except that it uses
2520      the exf (and cal) package instead of the
2521      external_fields_load routine (cf README file).
2522    
2523    checkpoint46m_post
2524    o modified testscript to return -- when there are no lines of "%MON" output
2525    o added new flag "quasiHydrostatic" for QH mode
2526      and new routine quasihydrostaticterms()
2527    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2528      New routine: mom_u_coriolis_nh()
2529    o fixed sign of non-hydrostatic metric terms in u and v equations.
2530      Depend on correct sign of gravitySign.
2531    o added work.pc* to .cvsignore in aim directories using ifc
2532    o introduced flag for controllin non-hydrostatic metric terms
2533    o removed gravitySign from PARM04
2534    o switched to g77/ifc from pgf77 in aim experiments
2535    
2536    checkpoint46l_post
2537    o made convective adjustment work with pressure coordinates:
2538     - changed the direction of k-loop in convective_adjustment.F for the
2539       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2540     - adjusted the reference pressure k-index in convective_adjustment.F
2541     - adjusted the convection condition in convect.F (in analogy to
2542       calc_ivdc.F)
2543     - convective_adjustment no longer computes anything on the halos
2544     - removed the warnings about negative salinity from find_rho.F and
2545       find_alpha.F; instead the new routine look_for_neg_salinity, called
2546       at the beginning of find_rho, find_alpha, and find_beta, does a
2547       check of the entire slice, if CPP-option
2548       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2549    checkpoint46l_pre
2550    
2551    checkpoint46k_post
2552    o fixed the verification/global_ocean.90x40x15 experiment:
2553     - new bathymetry (the world according to A., JMC, and M.)
2554     - new initial fields and forcing fields (*.bin files)
2555     - new POLY3.COEFFS (for the next release one should switch to a full
2556       equation of state: JMD95P or MDJWF)
2557     - fixed several errors and redundancies in the data file
2558     - experiment uses looped cells
2559     - added matlab directory with diagnostic scripts for plotting of output
2560    
2561    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2562     - read AIM physics parameters from a file (data.aimphys)
2563     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2564    
2565    checkpoint46j_post
2566    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2567    o move wVel computation at the end of the time step, in S/R integr_continuity
2568    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2569    o update timeave pkg for wVel diagnostic.
2570    checkpoint46j_pre
2571    
2572    checkpoint46i_post
2573    o Clean up AIM package (and keep the results unchanged):
2574      include CPP_OPTION and use IMPLICT NONE in all routines ;
2575      declare all the variables _RL ; use _d 0 for all numerical constants.
2576      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2577    
2578    checkpoint46h_post
2579    o cleaned up the use of rhoNil and rhoConst.
2580      - rhoNil should only appear in the LINEAR equation of state, everywhere
2581        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2582        and the dynamical equations are all divided by rhoConst
2583    o introduced new parameter rhoConstFresh, a reference density of fresh
2584      water, to remove the fresh water flux's dependence on rhoNil. The default
2585      value is 999.8 kg/m^3
2586    o cleanup up external_forcing.F and external_forcing_surf.F
2587      - can now be used by both OCEANIC and OCEANICP
2588    checkpoint46h_pre
2589    
2590     Added code to convert surface volume flux (fresh water) into
2591     a mass flux when using P coordinates in the ocean (OCEANICP).
2592     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2593    
2594    checkpoint46g_post
2595    o Include a new diagnostic variable phiHydLow for the ocean model
2596      - in z-coordinates, it is the bottom pressure anomaly
2597      - in p-coordinates, it is the sea surface elevation
2598      - in both cases, these variable have global drift, reflecting the mass
2599        drift in z-coordinates and the volume drift in p-coordinates
2600      - included time averaging for phiHydLow, be aware of the drift!
2601    o depth-dependent computation of Bo_surf for pressure coordinates
2602      in the ocean (buoyancyRelation='OCEANICP')
2603      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2604        Theta, Salinity, and Pressure in the parameter list. This routine is
2605        presently contained in find_rho.F. This routine does not give the
2606        correct density for 'POLY3', which would be a z-dependent reference
2607        density.
2608    o cleaned up find_rho
2609      - removed obsolete 'eqn' from the parameter list.
2610    o added two new verification experiments: gop and goz
2611      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2612    checkpoint46g_pre
2613    
2614    checkpoint46f_post
2615    o Enable tangent linear (forward mode) gradient checks:
2616      - extended active file handling to g_... files
2617      - added TANGENT_SIMULATION to theSimulationMode
2618      - extended grdchk package accordingly
2619    o added tangent linear setup in verification/carbon/code_ftl
2620    o added adjoint setup in verification/front_relax/code_ad
2621    
2622    checkpoint46e_post
2623    o Added new equation of state -> MDJWF
2624      - EOS of McDougall et al., 2002, JAOT, submitted
2625      - caveat: the equation of state is only valid for a smaller (more
2626        realistic?) range of values than JMD95P/Z and UNESCO
2627      - added masks to the calculation of pressure in store_pressure
2628      - added more check values for density in check_eos (ini_eos.F), some of
2629        the old check values are out of the range of the MDJWF-eos, so don't
2630        expect perfect matches for those
2631    checkpoint46e_pre
2632    
2633    checkpoint46d_post
2634    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2635      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2636      case of pressure coordinates. eosType='JMD95Z' in
2637      combination with buoyancyRelation='OCEANICP' now causes an error.
2638    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2639      in find_alpha/beta.
2640    checkpoint46d_pre
2641    
2642    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2643      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2644    
2645    checkpoint46c_post
2646    o Changes necessary for ocean in p-coordinates
2647     -  Added new buoyancy relation = 'OCEANICP'
2648     -  Added new parameters = gravitySign (this used to be contained inside
2649        the factor dRdZ which I added when we first switched to R coordinates).
2650     X GM/Redi is not compatible (yet)
2651     X bottom drag and no-slip need to be debugged.
2652    checkpoint46c_pre
2653    
2654    checkpoint46b_post
2655    o Added new equation of state -> JMD95Z and JMD95P
2656      - EOS of Jackett and McDougall, 1995, JAOT
2657      - moved all EOS parameters into EOS.h
2658      - new routines ini_eos.F, store_pressure.F
2659    o Added UNESCO EOS, but not recommended because it requires
2660      in-situ temperature (see JMD95)
2661    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2662      unesco.f to be used with POLY3
2663    checkpoint46b_pre
2664    
2665    checkpoint46a_post
2666    o Added (atmospheric) pressure loading
2667      - new field in FFIELDS.h, etc...
2668      - new cpp flag ATMOSPHERIC_LOADING
2669    o Changed hFacC to _hFacC in calc_phi_hyd.F
2670    o Added SHORTWAVE_HEATING to some files for consistency
2671    checkpoint46a_pre
2672    
2673    checkpoint46
2674    further merges from release1_p5
2675    o new ctrl package
2676      - adopted from ECCO environment to enable optimization
2677      - added Eliassen Palm fluxes to controls
2678    o added Eliassen Palm flux controls to gradient check package
2679    o cost package
2680      - Compatible with new ctrl package
2681      - added Eliassen Palm cost hooks
2682      - modif's of existing cost functions
2683    o Adjoint-related bug fixes in kpp:
2684      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2685      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2686    o autodiff package
2687      - flow directives:
2688        + new for S/R do_the_model_io
2689        + enhanced for S/R checkpoint
2690        + new gmredi.flow
2691      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2692        disable adcommon.h/g_common.h by default.
2693      - fixed problem for adjoint of global_max
2694    o modified verification/carbon/
2695    o New setup for adjoint of global_ocean
2696    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2697    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2698    o incorporated hooks for sponge layer code (external_forcing.F)
2699    
2700    checkpoint45d_post
2701    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2702    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2703      (affects plume_on_slope "cg2d" output)
2704    o add new parameter deltaTfreesurf for free-surface time stepping
2705    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2706    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2707    o change phiMin in exp1 (to agree with documentation)
2708    o add new flags:
2709     - T,S forcing inside/outside Adams-Bashforth
2710     - turn off temp,salt advection and/or forcing
2711     - for each tracer, define internal flag for multiDimAdvection & A-B
2712    o monitor: change definition of KE to check conservation of Energy
2713    
2714    checkpoint45c_post
2715    o Removed f90 comments ("!")
2716    o Modified initialisations to enable exf package for MITgcm
2717      (without invoking ECCO_PACKAGE).
2718    o modifications to gradient check package (Martin Losch)
2719      - enable centered differences
2720      - modified format of standard output
2721    
2722    checkpoint45b_post
2723    o cleaned exchange calls in cg2d
2724    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2725    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2726      to configure barotropic setup (Martin Losch)
2727    o moved some initialisations within bi,bj loop in dynamics
2728      (TAF flow dependency)
2729    o in initialise_varia, moved call packages_init_variables
2730      before convective_adjustment_init
2731      (corresponding adjustment of TAF tape initialisation).
2732    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2733    
2734    checkpoint45a_post
2735    o compute Rho over the whole domain (extend iMin,jMin indices)
2736    o specific exchange for X-slice domain (case Ny=1)
2737    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2738    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2739    
2740    checkpoint44h_post = checkpoint45
2741    o Fix to restore differentiability:
2742      place at which packages_init_variables is called in
2743      initialise_varia is crucial for reverse control flow.
2744    o modifications in GMRedi to enable stable adjoint
2745      (corresponding modif's in thermodynamics, dynamics)
2746    o added missing hook for sponge layer code in external_forcing
2747    o modified test cost functions
2748    o storing in gad_advection (plus removal of write(0,*)!
2749    o missing headers TR1.h added in convective_adjustment routines
2750    o errorMessageUnit set non-equal zero in eeboot
2751      (conflict on some platforms, e.g. IBM SP3)
2752    o modified carbon verif.
2753    
2754    checkpoint44h_pre
2755    o vertical grid option: allow to put the Interface at the middle between
2756      2 cell-centers ; replace delZ in pkg/kpp by drF.
2757    o GM Advective form: Tracers are advected using the residual transport (=
2758      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2759    
2760    checkpoint44g_post
2761    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2762      results) ; ifdef missing in thermodynamics.F
2763    
2764    checkpoint44f_pre,checkpoint44f_post
2765    o added PTRACERS package
2766      This allows an arbitrary number of passive tracers to be integrated
2767      forward simultaneously with the dynamicaly model.
2768      + Implemented so far:
2769        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2770        - I/O and checkpointing
2771        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2772      + Not implemented so far:
2773        - KPP
2774        - OBCS
2775      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2776        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2777        line in data.pkg.
2778      + This package is disabled by default since it increases storage.
2779    
2780    
2781    o testscript: added -cleanup option
2782    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2783                 b) enable to filter 2D fields.
2784    
2785    checkpoint44e_pre,post
2786    o re-wrote convective adjustment to use pre-calculated weights
2787      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2788      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2789      Original calls to convect() still in place.
2790    
2791    chkpt44d_pre,post
2792    o added missing EXCLUDE_MONITOR flags
2793    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2794      (incompatible typ in MIN/MAX expressions caused problems
2795      on IBM SP3)
2796    o in genmake added variable MAKEDEPEND
2797      plus resetting for case SunOS
2798    o added timer_stats.c routine for IBM SP3
2799    o removed variables in dynamics
2800    !!! I forgot to create tag chkpt44d_pre !!!
2801    !!! But chkpt44d_pre = chkpt44c_post    !!!
2802    
2803    o real fresh water flux implemented with non-linear free-surface.
2804    
2805    chkpt44c_pre,post
2806    o few fix (mask in shap_s2, EmPmR in external_field_load,
2807      USE_NATURAL_BCS in solve_for_P);
2808    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2809    
2810    checkpoint44b_pre/_post
2811    o merge of relevant stuff from the ecco-branch:
2812      - genmake: removed $S64 overwrite for case SunOS
2813      - pkg/exf: update and corrections for field swapping and obcs
2814      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2815                  harmonized between ECCO and MITgcm
2816      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2817                      updated checkpointing_lev... lists for obcs
2818      - model/src: minor changes in forward_step, plot_field
2819                   added directive for divided adjoint in the_main_loop
2820      - pkg/mdsio: added mdsio_gl_slice
2821    
2822    o check parameters & config (chkpt44a_pre,post)
2823    o OBC and NonLin_FrSurf.
2824    
2825    checkpoint44
2826    o fix bug in mom_vi_del2uv
2827    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2828    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2829    o update AIM experiments (NCEP input files)
2830    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2831    o added some stuff for AD
2832    
2833    checkpoint43
2834    o added two new advection tests
2835    o added global 4x4 degree ocean test
2836    o added test of H&S94 with free surface on cube
2837    o some final mods for gradient check, adjoint,...
2838    
2839    checkpoint42
2840      Fixed AD-related problems:
2841    o Store directives up-to-date with re-arranged Adams-Bashforth
2842      (mainly thermodynamics.F)
2843    o New store directives for multi-dim. advection schemes
2844      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2845      * new common block and key passkey
2846      (mainly gad_advection.F)
2847    o Modified store directives for split of dynamics/thermodynamics
2848      for the case ALLOW_KPP
2849    o Cleaned argument list for timestep_tracer.F
2850    
2851    checkpoint41
2852    o re-formatted/added comments in prologues of key subroutines
2853      to work with protex
2854    
2855    checkpoint40
2856    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2857    o added FLT (floats) package from Arne along with demo. experiment
2858    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2859      implementation of forward-in-time forcing terms
2860    o more mods for non-linear free-surface including new variable
2861    o modified multi-dim method to work on cube
2862    o bug fix in KPP (from DM)
2863    
2864    checkpoint40pre9
2865    o added DST advection schemes
2866    o fix MPI bug on SGI's
2867    o modifications for non-linear free-surface
2868    o fixed conditionals for fixed flow/passive tracer only mode
2869    o added tension/strain form of stress tensor
2870    o changes to commenting of arguments for TAF/TAMC
2871    o added/updated many matlab scripts
2872    o added multi-dimensional advection method for tracers
2873      
2874    checkpoint40pre8
2875    o new package rw/
2876      Added method for dumping intermediate local arrays:
2877      mdsio_writetile - same as mdsio_writefield except works from inside
2878                        bi,bj loop
2879      mdsio_writelocal - same as mdsio_writetile except works for local
2880                         arrays
2881      write_local_r? - higher-level wrapper for mdsio_writelocal
2882      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2883      Example given at end of mom_vecinv.F that dumps some local arrays.
2884    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2885      control flux-form versus vector invariant code.
2886      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2887      or genmake -DISABLE ...
2888    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2889      (additional storing is now needed for case vecinv;
2890      currently nothing implemented to switch this storing off
2891      in case fluxform is used since no CPP flag available).
2892    
2893    checkpoint40pre7
2894    o bug fix in dynamics.F
2895      calc_viscosity called before k=1,Nr loop.
2896    o added some #ifdef's ALLOW_PASSIVE_TRACER
2897    o cleaned initialisations in ctrl_map_ini
2898      related to TAF
2899    
2900    checkpoint40pre6
2901    o split dynamics into thermodynamics & dynamics
2902    o corresponding split of calc_diffusivity into
2903      calc_diffusivity, calc_viscosity
2904      (kpp_calc_diff, kpp_calc_visc).
2905    o Added diffkr, kapgm to control variables
2906    o bug fix in gmredi_slope_limit for ldd97
2907    
2908    checkpoint40pre5
2909    o proper initialization of Adams-Bashforth time stepping
2910      + uses forward step for very first step of model (iter=0)
2911    o re-generated *all* output since almost all output is modified by this
2912      change (sorry but we've been putting this one off for about 2 years)
2913      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2914        *not* regenerated since they are already out of date and I don't
2915        want to create the impression that they are suddenly working.
2916    o removed KAP stuff for DEC's
2917    o modified/added many .cvsignore files in */code and */input
2918    o added new expt "solid-body.cs-32x32x1"
2919      + this uses an alternative form of ini_curvilinear_grid.F which
2920        is not necessarily any better than the current one...
2921    
2922    checkpoint40pre4
2923    o added re-initialisations of utrans,vtrans,rtrans in
2924      calc_common_factors which are crucial for TAF.
2925    o extended iMin,jMin range for calc_common_factors,
2926      calc_diffusivity
2927    o added option ALLOW_PASSIVE_TRACER
2928    o a few minor updates and fixes
2929    
2930    checkpoint40pre3
2931    o created calc_gtr1.F for gad package
2932    o split the_main_loop and re-introduced forward_step
2933    o some recomputations of nIter0 for TAMC
2934    
2935    checkpoint40pre2
2936    o Updated to latest branch of AJA, JMC
2937    o Added gradient check package
2938    o Added routines for passive tracer handling
2939    o Added carbon sequestration sensitivity experiment
2940    
2941    checkpoint39
2942     o Modifications and fixes to support TAMC
2943       (mainly missing or wrong directives)
2944     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2945       in addummy_in_stepping
2946     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2947     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2948     o Included following packages:
2949       cal: calendar
2950       exf: external forcing
2951       ecco: essential routines to control use of cal, exf
2952             (NB: this is not the full ECCO environment)
2953     o disabled some packages by default in genmake
2954    
2955    checkpoint38
2956     o see notes_c37_adj.txt
2957     o corrected wrong layer index in external_forcing_t
2958     o replaced the_main_loop/forward_step by the_main_loop
2959     o removed forceoutput from write_state
2960       (replaced criteria for initial/final state)
2961     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2962    
2963    checkpoint37
2964     o mdsio.F routine split and packaged in pkg/mdsio
2965       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2966        used unless genmake -disable=mdsio)
2967     o allow a more precise surface-geopotential gradient for the atmosphere
2968       taking into account the change in space of Alpha (=1/rho) at the surface.
2969     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2970       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2971     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2972       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2973       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2974     o Time-Average diagnostics defined as a pseudo package "timeave".
2975     o pickup files : old pickup (before c35) did not work with new code (c35
2976       and after) unless activating 2 commented lines in initialise-varia.
2977     o Non-Hydrostatic pickup file Pb fixed.
2978     o bug with Rigid-lid version (since c35) fixed.  
2979    
2980    checkpoint36
2981     o implement Crank-Nickelson barotropic time-stepping
2982     o recover Time-Average diagnostics
2983     o fix Pb in checkpoint (PR#19)
2984     o AIM become a standard package ; clean unused CPP_kees
2985    
2986    checkpoint35
2987     o subtantial rewrite of dynamics.f
2988     o allows staggered time-stepping
2989     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2990     o added bottom drag (linear + quadratic)
2991    
2992    checkpoint34
2993     o Modified exchange routines for correct reverse simulation.
2994     o Added verification output to comply with bug fix in impldiff.F
2995       as of c33 (exp2, natl_box).
2996     o Corrected store directives in dynamics.F
2997     o Corrected array boundaries in impldiff.F
2998     o Corrected array dimensions in gmredi.
2999       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3000     o Added routine GLOBAL_SUM_INT to global_sum.F
3001     o Added mdsio_gl.F for ECCO purposes.
3002    
3003    checkpoint33
3004     o Fixed bug in lower BC in impldiff.F
3005     o Fixed confusion about units of forcing arrays in FFIELDS.h
3006       namely Fu,Fv,Qnet,Qsw,EmPmR:
3007       - Removed verification/natl_box/code/external_fields_scale.F
3008         (did not differ from that in model/src)
3009       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3010         (see FFIELDS.h for description)
3011       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3012         kpp_calc.F and kpp_transport_t.F
3013       - Removed model/src/external_fields_scale.F and calls to it
3014       - verification/natl_box uses flux data with "atmospheric" sign so
3015         a special version of external_fields_load.F is used to
3016         change the data as it's read in. This way, the arrays
3017         have the right units and signs at all times tha a user could
3018         possibly use them.
3019     o Corrected genmake to delete a temporary file during configuration
3020    
3021    checkpoint32
3022     o Scaling of forcing fields moved from external_forcing.F to
3023       external_fields_scale.F, called directly after loading fields.
3024     o Surface relaxation terms added to surface tendency fields in
3025       extra subroutine.
3026     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3027       fields.
3028     o Changes in GMRedi to comply with packaging structure.
3029     o Modifications and bug fixes in KPP package.
3030     o Verification experiment for KPP added (verification/nat_box/)
3031    
3032    checkpoint31
3033     o Packages interface brought in line with defined standard
3034       -> new routines packages_...F
3035       -> changes in initialise_fixed.F, initialise_varia.F
3036       -> enables initialisation interface for ECCO package
3037     o Rescaling of external forcing fields immediately after read
3038       (removed from external_forcing.F)
3039       -> new: surface_fields_scale.F
3040       -> affects ini_foorcing.F, external_fields_load.F
3041     o Computation of surface tendencies before tendency updates.
3042       -> new: external_forcing_surf.F
3043     o Change of variable names useGMRedi, useKPP, useECCO
3044     o Further changes in dynamics.F, impldiff.F for TAMC
3045     o Tested for experiments 0, 2, 4.
3046       - not yet tested for GMRedi.
3047       - not yet tested for KPP.
3048    
3049    checkpoint30
3050     o Updates for OBCs
3051     o New experiment for test OBCs (internal_wave)
3052     o New output.txt in verification/exp4/results/
3053     o Updates for KPP: calculation of viscosity corrected, new variables
3054       kpp_dumpFreq and kpp_taveFreq
3055     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3056       and entry for T90 in genmake
3057    
3058    checkpoint29
3059     o packaged KPP and GM/Redi
3060    
3061    checkpoint28
3062     o Corrected initialization of hFacMin for difference vertical coordinates
3063     o Modified calculation of partial cell thickness to more robust algorithm
3064     o config_summary.F: replaced write_1D_... by write_0D_...
3065       read_write.F: added subroutines write_0D_...
3066     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3067       included some initialisations required for TAMC.
3068     o routine calc_isoslopes: modified sqrt computation to make it
3069       differentiable for zero argument.
3070     o routines dynamics, impldiff:
3071       included store directives and tape key computations required for TAMC.
3072     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3073    
3074  checkpoint27  checkpoint27
3075   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
3076     formulation works properly with variable resolution.     formulation works properly with variable resolution.

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