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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.764 by jmc, Thu Jan 11 00:29:41 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
8    o testreport: add option "-skipdir" to skip some test.
9    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
10      momentum calculation.
11    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
12    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
13      remove checkpoint.F and the_correction_step.F (no longer used);
14      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
15    o add option (linFSConserveTr) to correct for tracer source/sink due to
16      Linear Free surface
17    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
18    o pkg/thsice: fix reading mnc-pickups
19    
20    checkpoint58t_post
21    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
22    o pkg/mdsio:
23     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
24       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
25       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
26     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
27     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
28       either MDS_READ_FIELD or MDS_WRITE_FIELD )
29     - new S/R (to replace MDSWRITEMETA), which allows to write more
30       informations (variable names, time ...) to meta files.
31     - modify rdmds.m to give back the meta file content.
32    o pkg/diagnostics: change vertical interpolation to be safer, and more
33       flexible (define p-levels to interpolate to in data.diagnostics);
34      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
35       diagnostic pointer.
36    o pkg/seaice: more cleaning up of seaice_growth, added many comments
37    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
38    o fix multi-category seaice:
39     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
40       SEAICE_MULTICATEGORY
41     - fix short wave heat flux
42    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
43       and allow to use EVP solver. Change forward lab_sea: test both EVP
44       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
45    o Initial check-in of lab_sea adjoint
46      (very similar to natl_box_adjoint/code_seaice)
47      * used C-grid and EVP solver
48      * used KPP, GM/Redi
49      * uses inAdExact=.TRUE.
50      * gradient checks fail for both ADM and TLM
51        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
52        f.d. gradients actually seem more problematic than ADM, TLM gradients;
53        issue is related to forward mismatch between g77 an ifort
54    o pkg/seaice: overhaul of thermodynamics
55     - growth.F and groatb.F are replaced by new routine seaice_growth.F
56     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
57     - move a few global fields out of SEAICE.h into seaice_growth.F and
58       make them 2D (FICE/QNETO/ ...)
59     - remove FO (it is the same as QNETO)
60     - introduce a few local fields to avoid modifying external fields such
61       as atemp, etc.
62    
63    checkpoint58s_post
64    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
65      changed exf_set_gen.F so that
66        genperiod=0 means input file is one time-constant field and
67        genperiod=-12 means input file contains 12 monthly means
68    o CG2D: use pre-computed solver main-diagonal (stored in common block);
69      this affects truncation error ; generate new output file for exp. which
70      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
71        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
72        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
73        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
74        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
75        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
76    o start implementation of deep-atmosphere and anelastic formulation
77    o verification: remove 2nd copy of input files and use script "prepare_run"
78      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
79    o mom_common/vecinv/fluxform: fix a few initialisation isssues
80    o profiles: fix for multithreaded case
81    
82    o diagnostics: rename few diags:
83      s/'PRESSURE'/'RCENTER '/g
84      s/'TICE    '/'oceFreez'/g
85      s/'TAUX    '/'oceTAUX '/g
86      s/'TAUY    '/'oceTAUY '/g
87      s/'SWFLUX  '/'oceQsw  '/g
88      s/DIFx/DFxE/g
89      s/DIFy/DFyE/g
90      and add few ocean-forcing diagnostics:
91      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
92    o modifications to pkg/seaice/growth.F and budget.F, which change results of
93      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
94      as actual snow thickness.  It now refers everywhere to effective snow
95      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
96    
97    checkpoint58r_post
98    o modifications to pkg/seaice/growth.F, which change results of
99      lab_sea experiment: fixes pertain to melting snow over open water, to
100      masking EVAP under sea ice, and to using the correct AREA variable for
101      computations of EVAP, PRECIP, HSNOW, and GHEFF
102    o add ability to read bathy, salt, and theta using MNC (off by def)
103    o add flooding algorithm and advection of HSNOW for pkg/seaice;
104      both are turned off by default and do no change any results
105    o seaice advection with pkg/thsice: a step toward the use of non-linear
106      advection scheme, but #ifdef or commented out for now (requires more EXCH).
107    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
108      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
109      in natl_box (affects results @ truncation level: update output.txt)
110    o multi-threading and IO:
111      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
112      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
113        (needed to work with SingleCpuIO): tested in all verif. exp.
114    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
115      affects the results (but none of the verification test uses this scheme).
116    o Adding some pkg/diagnostics capability to pkg/seaice
117      (will certainly be subject to changes)
118    o ctrl: adding new control variables:
119      lwflux, lwdown, evap, snowprecip, apressure, runoff
120    
121    checkpoint58q_post
122    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
123      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
124      high_res_cube configuration by 4% on Columbia.
125    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
126      add (in global_with_exf/code) a version of EXF_INTERP_READ without
127      dynamical allocation (seems to work in multi-threaded).
128    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
129      single CPU io) so that TAF does not have to see EESUPPORT.h
130    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
131    
132    checkpoint58p_post
133    o obcs: stop if obcs is used with useCDscheme = .true.
134    o shelfice:
135     - fix a sign error so that no slip at shelfice interface works
136     - remove stop for combination non-hydrostatic code and shelfice. That does
137       not mean, that the results are correct, but at least they are numerically
138       stable
139    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
140    o added adjoint exch routined for all exch*3d* routines
141      and updated flow directives
142    
143    checkpoint58o_post
144    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
145      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
146    o change controling S/R for writing pickup file (new S/R do_write_pickup)
147      and clean-up reading/writing of pickup files.
148    o fix local version of read/write pickup (NH part) in rotating_tank/code
149    o simplify EXCH interface:
150     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
151     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
152    o added the regrid package
153    o shelfice:
154     - add a simple boundary layer scheme to reduce noise
155     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
156    
157    checkpoint58n_post
158    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
159       local variable (not in common block).
160    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
161      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
162      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
163        to work with SingleCpuIO.
164    o add "_d 0" to real constant of pkg/cfc subroutines ;
165       update exp. cfc_exemple & tutorial_cfc_offline output files.
166    o multi-threading and IO:
167      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
168        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
169      - barrier before and after reading.
170      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
171      - avoid using MDS_WRITELOCAL for LAND pkg output.
172      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
173        common-block variables ; Allows multi-threading with master-thread IO.
174    o change default MAX_NO_THREADS from 32 to 4 ;
175      and stop cleanly when MAX_NO_THREADS is too small.
176    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
177    
178    checkpoint58m_post
179    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
180       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
181    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
182       keep global_ocean.90x40x15 (for AD testing) with former secondary test
183       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
184    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
185        add MITgcm_tutorials (= code + all the tutorials)
186    o ecco, option to compute cost for total ssh (mean+anom)
187    o consistent with addition of ptracer and ssh in pkg/profiles
188    o profiles: adding ptracer and ssh
189    o testreport: change multi-test output-file name
190      (from output.txt.{name} to output.{name}.txt)
191    o profiles: now ok for mutli-tiles case
192    o seaice: add 4 parameters for different advection schemes for area,
193      (effective) seaice thickness, enthalphy, and snow height. Their default
194      is the standard parameter SEAICEadvScheme
195    o calc_gw:
196     - add cosFacU in zonal viscous flux (harmonic.visc.).
197     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
198       of tutorial_plume_on_slope.
199    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
200    o calc_gw: true flux-form, account for horizontal grid spacing.
201      update rotating_tank results, but not plume_on_slope (affected at
202      truncation level, 11 digits).
203    
204    checkpoint58l_post
205    o calc_gw:
206     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
207     - remove side-drag for now (need to fix it); update plume_on_slope results.
208     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
209    o commit code to make SST/SSS weights spatially variable
210      (based on either variable in-situ or variable initial T/S weights)
211    o pkg/ecco:
212      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
213        now based on horizontally varying weights wthetaLev, wsaltLev
214      * cost_averagesflags now returns year indices in addition to day, month
215      * sflux balance is performed on annual basis
216        (sflxumm, sfluxmm2, bal_sfluxmm)
217      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
218        including separate counting and multipliers
219    o pkg/rbcs
220      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
221    
222    checkpoint58k_post
223    o testreport:
224     - always build in dir. "build" (if not there, mkdir build instead of building
225       & running in input)
226     - run in dir run (if it exists), in build otherwise.
227     - call prepare_run (if input/prepare_run exists)
228     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
229    o pkg/exf modifications to interpolation and rotation routines for more
230       reasonable treatment of North Pole singularity: for tracers North Pole
231       value is set to northernmost zonal-mean value, for zonal velocity it is
232       set to zero, and for meridional velocity it is set to northernmost value.
233    o pkg/exf/exf_check_range.F
234     - add tile index to diagnostics and move stop statement to the very
235       end of the routine.
236    o pkg/diagnostics: (diagnostics_main_init.F)
237      define title of isomorphic variables according to the current config.
238    o pkg/thsice with pkg/seaice dynamics:
239    - fix domain of computation (interior only, required for exf) and do exchanges
240    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
241    o towards a standard way of dealing with multi-threading in MONITOR
242      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
243    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
244       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
245    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
246    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
247    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
248       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
249    o tracer advection:
250     - clean-up and simplify calc_common_factors.F
251     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
252       advection subroutine (but still not used within DST advection S/R)
253    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
254    
255    checkpoint58j_post
256    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
257      from file (collects calls previously in FORWARD_STEP)
258    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
259    o adjoint store dir. adjusted accordingly
260    o genmake2
261      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
262    
263    checkpoint58i_post
264    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
265      on wind stress (SEAICEstressFactor defaults to 1.)
266    o Total number of Timers is finite (<=40): comment out 2 non-essential one
267      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
268    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
269      on CS-grid: no longer loosing mass.
270    o exf & curvilinear-grid: no longer modify longitude xC & xG.
271    o pkg/ggl90: fix sloppy output and fix a bug
272    o pkg/seaice: added SEAICEuseEVPpickup parameter
273      - Set to false in order to start EVP solver with
274        non-EVP pickup files when using SEAICEuseEVP
275      - fix sign error in diffusion in seaice_calc_rhs
276    
277    checkpoint58h_post
278    * Modifications for bottom topography control
279      o replace hFacC by _hFacC at various places
280      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
281      o add non-self-adjoint cg2d_nsa
282      o update autodiff support routines
283      o re-initialise hfac after ctrl_depth_ini
284      o works for 5x5 box, doesnt work for global_ocean.90x40x15
285    * Adding verification for 5x5 box (4-layer) bottom topography control
286    
287    checkpoint58g_post
288    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
289       used for mean seasonal cycle, mean diurnal cycle); add an example
290       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
291    o pkg/ggl90:
292      - add parameter (minimum surface kinetic energy)
293      - fix bug (avoiding division by zero)
294    o couple pkg/thsice to pkg/seaice:
295      - modify advection in seaice to accomodate new scalar fields to be advected
296      - only muliDimAdection scheme work with seaice/thsice
297      - mapping of thsice-variables to seaice-variables, back and forth
298      - does not break the verification experiments, but does not give the
299        desired results either
300    o pkg/seaice
301      - make (default) second order advection a bit less confusing?
302    
303    checkpoint58f_post
304    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
305      to pkg/seaice):
306      - new routines thsice_map_exf and thsice_get_exf provide the interface
307      - add an additional formal parameter to thsice_solve4temp
308    o pkg/exf:
309      - add new fields wspeed, snowprecip (to be able to couple to thsice)
310      - correct Stefan-Boltzmann constant
311      - new parameter for longwave surface emittance
312      - separate some stuff from exf_bulkformulae into new routines  
313        exf_radiation, exf_wind
314      - add new parameters and constants: longwave emissivity for ocean, ice
315        and snow, evaporation parameters over ice
316      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
317        either wind from stress or stress from wind
318    o pkg/thSIce:
319    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
320    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
321       and THSICE_CALC_THICKN
322    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
323    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
324      to make debugging easier.
325    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
326    o pkg/bulk_force:
327      - clean-up comments and parameters ;
328      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
329    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
330      generate new output for test-experiment: aim.5l_cs.thSI
331    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
332      testreport accordingly
333    
334    checkpoint58e_post
335    o SEAICE_CGRID adjoint done
336    o R_STAR adjoint implemented.
337      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
338      * need to sort out init. of h0facc, etc.
339    o Make pkg/profile fully independent of ecco,cost, etc. stuff
340      to be able to use it in pure forward.
341    
342    checkpoint58d_post
343    o upgrade simple test-experiment to tutorial example:
344     step.1: duplicate the experiment and (step.2) will remove the old copy.
345      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
346      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
347      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
348      tutorial_global_oce_biogeo    <- copy of dic_example
349      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
350      tutorial_plume_on_slope       <- copy of plume_on_slope
351      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
352      tutorial_global_oce_optim     <- empty for now (David ?)
353      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
354     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
355    o correct a sign problem in cost_scat.F
356    o obcs and ptracers: fix boundary conditions for advections schemes
357      with larger stencil
358    o thsice adjoint: start
359    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
360      completeness
361    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
362      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
363    o ptracers adjoint:
364      * avoid extensive recomputatations
365      * fix missing re-init. of gptr (missed by TAF)
366    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
367      me to turn off the excessive output to STDOUT that this package produces
368    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
369      and add those terms in Vector-Invariant formulation.
370    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
371      if the control period (xx_hfluxperiod etc) is 0
372    o in profiles pkg, clean routines and fix details
373    o in ecco pkg, reading ssh data:
374      fix problem in case the model does not start at iter0=0
375    o fix mnc-pickup/restart for ptracers
376    o new package prifiles:
377      code to compute profile-based cost by Gael Forget
378      (modifs in ecco, ctrl, autodiff)
379    o Benign bug fix in initialization (spotted by M. Mazloff) of
380      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
381    
382    checkpoint58c_post
383    o adjoint: finish NLFS adjoint and provide reference output in
384      verification/global_ocean.90x40x15/results_ad_nlfs
385    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
386      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
387      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
388      with SEAICE_CGRID defined.
389    o move calendarDumps from "data" to "data.cal" and clean-up the code
390      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
391    o add useEXF & useCAL flags (for now, set in hard-coded way)
392    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
393      (were missing in NH mode, and wrong in quasihydrostatic mode).
394      waiting for Chris updated version of calc_gw to add those CALLs.
395    o fix bug in quasihydrostatic S/R ;
396      add a test for this option: global_ocean.90x40x15.qshyd
397    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
398      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
399    o add on/off flag useOffLine for package OFFLINE
400    o seaice:
401      - modify advection so that it works also on the C-grid
402      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
403        problem in multi-tile runs with C-grid
404      - add flags for clipping ice velocities and/or masking solver forcing
405      - fix drag (ocean on ice) formulation and a bug that caused noise in the
406        C-grid solver
407      - added a few comments to seaice_diffusion.F
408      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
409        are now exclusive)
410      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
411        required re-ordering the code a little:
412       + make DAIRN global variable (defined in SEAICE)
413       + move computation of the viscosities eta and zeta into a new separate
414         routine (because I need to recompute them in seaice_ocean_stress.F)
415    
416    checkpoint58b_post
417    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
418      update output.txt of exp. aim.5l_cs.thSI
419    o various mnc cleanups and improvements:
420      + shrink lookup tables by factor of ~4
421      + better error reporting when running out of lookup space
422      + able to handle longer path/file names (up to 500 chars)
423    o adjoint:
424      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
425      - TBD: "hidden" mom_vecinv recomp. in dynamics
426    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
427     (allow to differentiate between forcing components using new integer flags:
428      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
429     and add new flag to put Dissipation tendency out of Adams-Bashforth.
430    o ecco
431      - enable trend removal from SSH anomaly obs.
432    o adjoint
433      - a fix for PmEpR when #undef EXACT_CONSERV
434      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
435      - try to fix "hidden" recomp. in forward_step for NLFS
436        (NLFS seems broken sometimes after I checked it in)
437    o seaice:
438     - add c-grid version of the dynamic solver:
439       + three new routines that are the c-grid substitute lsr, dynsolver
440         and ostres
441       + put a few fields that were local to dynsolver into global common
442         blocks, so that I can move the computation of stresses etc into
443         seaice_lsr (saves coding but may break the adjoint).
444     - replace more hardwired parameters by runtime parameters
445     - add ice masks that mask the rhs of the implicit solvers where there
446       is no ice (commented out in seaice_dynsolver, because i am not sure
447       if this works properly), eventually this should replace the clipping
448       of ice velocities in seaice_dynsolver to +/-40cm/s.
449    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
450      include it only where its needed
451    o move balancing of fluxes before the call of external_forcing_surf
452    o seaice:
453      - correct units of turning angles (now they are really in degrees)
454      - move computation of GWATX/Y out of main routine into dynsolver
455      - initialize GWATX/Y in seaice_init
456    o Apply mask on Fresh-Water flux (needed for SSH forcing).
457      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
458    o seaice: add runtime flags for turning angles (default to zero)
459    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
460      and trend from exf forcing and ctrl control adjustments
461    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
462      (since checkpoint57x_post)
463    o change the default rotation period to 86164.s = the Earth rotation
464    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
465      and based on a reference stratification. Tested within hs94.cs-32x32x5.
466    o seaice advection: add code for choosing between the default (2nd order
467      central differences) and multiDim advection schemes provided by
468      pkg/generic_advdiff
469    o seaice:
470      - removed all references to SEAICE_GRID.h fields from
471        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
472        (cubed-sphere configuration will change a little)
473      - grid computations in seaice_init are obsolete now.
474      - cleaned up code a little so that is easier to read (hopefully).
475      - added new (better?) discretizations of default advection and diffusion
476        (turn on with SEAICEuseFluxForm)
477      - replace 1 in 3d global fields by kSurface in growth.F
478      
479    checkpoint58a_post
480    o seaice:
481      - bug fix in advect.F
482    o shelfice:
483      - separate shelfice load anomaly from pload (breaks with time
484        dependent forcing), => introduce constant field shelficeLoadAnomaly.
485        Its default is 0., but it may be computed more cleverly from (unknown)
486        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
487        done offline. A good approximation of the pressure load anomaly is
488        necessary to avoid large initial adjustment processes underneath
489        deep-reaching shelfice.
490      - small fix in ISOMIP shelfice_thermodynamics
491      - add more sophisticated thermodynamics of Hellmer (1989), this is
492        now the default
493      - give a few constants more intuitive names
494    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
495      if bulk formulae are used in long integration (especially EmPmR). Turn
496      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
497      if balancePrintMean, the imbalance that is substracted is printed to
498      STDOUT.
499    o fix bug (typo) in obcs_apply_eta.F
500    o add a new package shelfice which enables us to model the circulation
501      underneath shelf-ice with draughts of hundreds of meters.
502     - works
503     - to do: + include improved thermodynamics
504              + check whether kSurfC (from model/inc/SURFACE.h) can be used
505                instead of new field kTopC
506              + can we use topoFile, Ro_surf and existing code in ini_depth.F
507                instead of new field R_shelfIce and new code in ini_depth.F
508                and ini_mask_etc.F?
509              + adjust vertical mixing schemes?
510    o seaice pkg:
511     - add a cpp-flag to include a simple formula for a salinity dependent
512       freezing point of sea water at the surface
513     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
514       meridional stresses are now different (and hopefully correct)
515    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
516       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
517       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
518    o pkg/diagnostics: add options and parameters for regional-statistics
519       diagnostics ; define regions by reading a region-mask from a file
520       (might add other options later)
521    o pkg/bulk_force:
522     - add option and parameters to use AIM surface-flux formulae.
523     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
524       others forcing fields (defined in PARM05, parameter file "data") are loaded
525       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
526     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
527     - use the right EXCH call for uwind,vwind (to work on CS-grid).
528     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
529       and parameters (note: calcWindStress replaces .NOT.readwindstress).
530     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
531    
532    checkpoint58
533    o add "--embed-source" option to genmake2 which, when the supporting
534      tools can be compiled (as determined by genmake2) will turn on the
535      embed_files package which then embeds the entire MITgcm source code
536      (*.[fFhc] + Makefile) used for the build within the executable
537      - requested by CNH but off by default
538      - adds a paltry <9MB to the mitgcmuv executable in most cases
539      - only writes the output when useEMBEDSRC in eedata is true
540    o clean up 3-dim. relaxation codes:
541      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
542      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
543      * Thanks to Tom Haine for testing!
544    
545    checkpoint57z_post
546    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
547      affects output (@ truncation level) of exp. plume_on_slope ; updated.
548    o fix the pickup behavior for obcs in combination with ptracers
549    o fix a bug in ptracers_external_fields_load
550    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
551      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
552    o transfered surface NH pressure to eta field (if exactConserv).
553    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
554         and update lab_sea output.txt file.
555    o completing 3-dim. relaxation code: additional term
556         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
557      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
558      * At compile time, in "EXF_OPTIONS.h" set
559          #define  ALLOW_CLIMTEMP_RELAXATION
560          #define  ALLOW_CLIMSALT_RELAXATION
561      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
562          tauThetaClimRelax3Dim = 15552000.0,
563          tauSaltClimRelax3Dim  = 15552000.0,
564      * 3 cases:
565          1) Use a constant-in-time 3-dim. field
566          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
567          3) Real-time relax. to time-evolving prescribed field
568    o Adding Laplacian-type smoothness constraint on
569      initial and boundary (forcing) controls (ic, bc)
570      * enable at compile-time via
571        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
572      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
573      * Absolute scale somewhat unclear so far
574      * no area weighting was included since no other cost term does so far
575    
576    checkpoint57y_post
577    First step for a NLFS adjoint
578    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
579    o new init. routines for calc_r_star, calc_surf_dr
580    o still need to deal with ini_masks_etc
581    o testreport seemed happy
582    checkpoint57y_pre
583    
584    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
585    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
586    o add new offset feature to offline pkg (plus minor cleanup)
587    o cfc fixes for final year of integration
588    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
589      be in GCHEM_OPTIONS).
590    
591    checkpoint57x_post
592    o fix testreport Pb in multiple test experiment.
593    o cleanup our namelist syntax in verification:
594      - make it more F95 standards compliant (some work still needed)
595      - allows the vast majority of our tests to work with gfortran
596    o Non-Hydrostatic:
597     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
598     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
599    o Allow to apply AB on T,S rather than on AB(gT,gS):
600     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
601     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
602       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
603     - need a "clever" read_pickup to restart from the other AB formulation
604    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
605    o remove some unused variables (reduces number of compiler warnings)
606    o adjoint
607      * Disable useVariableViscosity for adjoint for time being
608        (there are a number of extensive recomputations)
609      * Initialize certain variables needed for adjoint
610    
611    checkpoint57w_post
612    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
613                 fix the singleCpuIO RS version of MDSWRITEFIELD
614       and add a WARNING if using globalFiles=T with multi-processors.
615    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
616      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
617    o tracer advection scheme:
618      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
619       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
620       was not very convenient).
621      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
622       (further tests needed for the implicit DST & Flux-Limiter schemes).
623    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
624      and sRef for convenience, handy, when you want to initialize
625      ptracers in a large domain with a constant non-zero value. Also,
626      untangle ptracers_init.F a little.
627    
628    checkpoint57v_post
629    o change dome exp. to use variable viscosity in side-drag terms.
630    o remove all the files from the cfc_offline test since they are now
631      incorporated into tutorial_cfc_offline which has been producing
632      identical results for a few days of testing
633    o add new parameter: sideDragFactor to enable half-slip-side BC
634      and change side-drag S/R to use viscosity from mom_calc_visc
635      (can switch back by setting sideDragFactor=0.); affects results at
636      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
637       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
638    o vorticity & strain are now computed without masking, to account for
639      no-slip-side BC in variable viscosity calculation ; mask is applied
640      anyway later on, before computing advection/coriolis terms.
641    o modify exp4 to test new obcs support for reading from external files
642      and for passive tracers
643    o fix behavior of ptracers_monitor when monitor output is written to a
644      netcdf-file; still not independent of monitor.F (writes in the same
645      file).
646    o change default value of tRef (put a uniform, meaningful value for ocean
647      & atmos) and initialize sRef (was missing, as Martin mentioned).
648    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
649      to be proportional to enstrophy dissipation length.  Thus,
650       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
651      This is now consistent with Smagorinsky and with the manual.
652    
653    checkpoint57u_post
654    o OBCS and PTRACERS: add open boundary support for passive tracers
655      - either use homogenous (pseudo) v.Neumann conditions or prescribe
656        OB-values from file; this is not different from the way theta and salinity
657        are treated
658      - however, Orlanski-radiation conditions are not supported, and the model
659        will stop if you use pTracers and Orlanski at the same time.
660      - beefed up the rountine obcs_external_fields_load: now only those open
661        boundary values are overwritten with values from files for which there
662        are really files, otherwise the OB-fields remain untouched. This makes
663        it possible to use different OBs at different ends of the domain (as
664        with EXF)
665    o reduce number of exch calls in shap_filt (s2).
666    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
667      truncation level) 4/5 MLAdjust test results (11&12 digits match).
668    
669    checkpoint57t_post
670    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
671    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
672      same truncation, independent of the face number: affects affects several
673      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
674    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
675      note that biharmonic viscosity + no-slip was not tested in any experiment.
676    o fix bug in non-linear free-surf side-drag ; generate new output for
677      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
678    o make mnc honor the writeBinaryPrec flag for most kinds of output
679    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
680    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
681      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
682    o add brackets in multi-terms sum to get same truncation, independent of
683      the face number (manage to get exactly same value of gU,gV at the cs-edge)
684      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
685    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
686      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
687      a maximum grid-scale Reynolds number.  Also, changes all length calculations
688      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
689      Suggested values of viscosity parameters found in mom_calc_visc.
690      Many new viscosity diagnostics available.
691    
692    checkpoint57s_post
693    o Add clearing-house for viscosity calculations, mom_calc_visc and
694      correct numerous bugs in LeithD and Smagorinsky discretizations.  
695      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
696      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
697      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
698      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
699      The Strain-Tension form is now called with useStrainTensonVisc=.true.
700      ViscAhStrain and viscAhTension are now retired.
701    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
702    o In response to JMC's bug report, genmake2 now ignores any soft-links
703      that it finds in the *current* directory when searching for files.
704      Soft-links found in any other source directories will still work as
705      they did before.
706    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
707      a C routine to unlimit the stack size
708    o mnc-ify pkg/aim snapshot vars
709    o mnc-ify pkg/land as requested by Daniel
710    o various changes to mnc including:
711      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
712      - output can now be grouped so that all files within a group
713          change the ITER portion of their names in lock-step together
714      - can now read ("global") PER-FACE (in addition to PER-TILE) files
715          and works with both EXCH1 and EXCH2 (but needs more testing)
716      - writing works for all verification test cases w/ g77 on Linux
717    
718    checkpoint57r_post
719    o make MNC variable initialization happen earlier
720    o add diagnostics for (almost) each term of the momentum Eq.
721    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
722    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
723    o remove MINIMAL_TAVE_OUTPUT option ;
724      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
725    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
726      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
727    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
728    o add time-dependent SST, SSS control
729    o cost terms in ecco/ modularized (new cost_generic.F)
730    o cost_averages routines are modularized (new cost_averagesgeneric.F)
731    o new infrastructure for seaice model vs. obs misfits in seaice/
732      * driver from the_main_loop.F is seaice_cost_driver.F
733      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
734      * gradient check in Exp. 6a of natl_box_adjoint/
735    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
736      (see README file)
737    
738    checkpoint57q_post
739    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
740    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
741      - bug was reported by Jean-Michel and Ian Fenty
742    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
743      update exp. cpl_aim+ocn output.
744    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
745      Needed for high-res. runs with large global files
746      to be able to limit tapelev size
747    o Changed some tests for adjoint:
748      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
749      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
750      * global_ocean.90x40x15/ back to default 3-level checkpointing
751    o Modifications to enable scripted COMMON to MODULE conversion
752      * verification/OpenAD/code/ has necessary scripts and description;
753      * converts, compiles and runs successfully;
754    
755    checkpoint57p_post
756    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
757    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
758      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
759    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
760    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
761      (was already the case for dissipation with mom_vecinv,
762       and also the case for grad.PhiHyd when staggered-timeStep)
763      This will allow to put dissipation out-off the AB time-stepping.
764     Unfortunately, affects truncation error. Update output of exp. that "fails"
765      (cg2d matching number) and leave the others for later: front_relax(10),
766      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
767      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
768    
769    checkpoint57o_post
770    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
771      (2) its ready to be documented during the 20050801 DocFest
772    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
773      for ideal_2D_oce and lab_sea on linux_ia32_g77
774    o set to #undef CTRL_SET_OLD_MAXCVARS_30
775      in global1x1_tot/code_seaice_adj to access indices 32, 33
776      (worth another tag)
777    
778    checkpoint57n_post
779    o adding precip control xx_precip 32
780    o adding swflux control xx_swflux 33
781    o Replacing 10 forcing penalty cost routines by 1 generic.
782    o Implementing partitioning in time-mean and variable adjustment
783      for atmos. state.
784    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
785    o in natl_box_adjoint:
786      * updated exp 1 to 10
787        (but does not have time-mean vs. variable split results yet)
788    o updated global1x1/*_seaice_adj/
789      to incorporate latest changes
790    o enable useSingleCpuIO for mdsio vector routines
791      (applies in particular to tapelev I/O)
792    o removed inefficient K-loop in all active_file*control*.F
793    
794    checkpoint57m_post
795    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
796      and advect_cs (use EXCH-2 and standard cs-32 grid files).
797    o pkg/exch2: filling of face-corner halo regions is optional
798      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
799    
800    checkpoint57l_post
801     tag before updating tutorials (pre-release-2)
802    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
803       for output and interpolation of input fields onto model grid)
804    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
805       Affects results of exp. rotating_tank ; update output.txt.
806    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
807          and taking the square quantity and/or using a fraction-weight field.
808    o fix aim_diagnostics_init.F mate numbers.
809    o add mnc output capability to diagnostics/diagstat and update
810      our cvsignore files for the ACSII output generated
811    
812    checkpoint57k_post
813    o lab_sea now uses diagnostics package and provides a suite of
814      new EXF diagnostics output.
815    
816    checkpoint57j_post
817    o exf
818      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
819        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
820        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
821      * extended diagnostics output
822        - now includes all EXF variables
823        - hs, hl moved to common block
824        - separate S/R for diagnostics, called after ctrl vector is added
825        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
826        - EXFqnet contains true Qnet (i.e. includes qsw)
827      * updated verif. lab_sea, global_with_exf
828      * Rearranging hflux (exf_mapfields -> exf_getforcing)
829        to ensure that diagnostics sees a true EXFqnet
830    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
831    o diagnostics pkg: change pointers so that 1 diagnostic can be used
832      several times with different frequencies.
833    o mnc-ify the thsice package as requested by Daniel Enderton
834      - the monitor--MNC output needs work
835      - many attributes need to be added (most are currently blank)
836    o mnc-ify theaim_v23 package as requested by Daniel Enderton
837      - many attributes need to be added (most are currently blank)
838    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
839    o add Sadourny like discretization to the 4th.O vorticity advection scheme
840    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
841      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
842         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
843    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
844     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
845    
846    checkpoint57i_post
847    o Diagnostics package was changed: diagnostic allocation is now deactivated
848      by setting an empty file name in the namelist (used to be by setting 0 frequency)
849    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
850      add 1rst Order upwind vertical Shear.
851    o add a quick fix for A/B checkpointing in OFFLINE mode
852    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
853      end-run around the C/Fortran linking horror in eesup/src/timers.F
854    o added pkg/runclock: allows user to terminate run based on wall clock
855    o added non-hydrostatic scaling parameter: nh_am2
856    o pkg/my82: futile attempt to make results compiler-independent by adding
857      some "_d 0", etc. no effect.
858    o for mnc output, fill the 'T' coordinate var with myTime and create a
859      separate 'iter' variable for iteration count
860    o pkg/diagnostics:
861      add new capability: output of Global/Regional & per-level statistics ;
862      tested against monitor output (including land & thSIce) on various exp.
863    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
864    
865    checkpoint57h_done
866      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
867      data.diagnostics, data.gchem, data.ptracers) is done.
868    
869    o pkg/diagnostics: prepare for Global/Regional statistics.
870      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
871    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
872      and rename it: DIFFERENT_MULTIPLE
873    
874    checkpoint57h_post
875    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
876    o pkg/diagnostics: change output frequency, now in seconds (instead
877      of Nb of iterations). This requires to change data.diagnostics.
878    checkpoint57h_pre
879    
880    o in mnc, let the user create the output dir if both mnc_outdir_date
881      and mnc_outdir_num are false
882    o add fflags() to pkg/diagnostics which allows one to specify, on a
883      per-file basis, the file precision [default behavior is unchanged]
884    o added diagnostics to pkg/kpp, including computation of mixed layer
885      depth based on a temperature/density criterion
886    o updated verification/natl_box to test the new pkg/kpp diagnostics
887    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
888    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
889    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
890      not mnc -- this mistake was found by JMC and is now corrected
891    
892    checkpoint57g_post
893    o add Adams-Bashforth 3rd Order time stepping:
894      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
895      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
896    checkpoint57g_pre
897    
898    o make lambda[Theta,Salt]ClimRelax spatially varying
899      (default remains spatially uniform constant based on tau)
900    o added new control variables
901      * init. uVel, vVel, etanN
902      * lambda[Theta,Salt]ClimRelax
903    o separate masks used for ctrl_pack/unpack 'from write_grid' output
904      (suggested by G. Forget)
905    
906    checkpoint57f_post
907    o add parameter "baseTime" = model base time = time at iteration zero
908      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
909      account for baseTime shift
910    o move Coriolis arrays from PARAMS.h to GRID.h
911    checkpoint57f_pre
912    
913    o mnc-ifying the seaice package
914    o introduced an alternative length scale calculation for use in the limiting
915      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
916    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
917    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
918      as well as grad(vort3).  Made it compatible with both approximate form
919      for the cubed sphere and full form of these gradients.  Added flag
920      useFullLeith to select between approximate and full form.  
921    o add "d0" in getcon.F to reduce differences between compilers/platforms
922      update output.txt of exp. fizhi-gridalt-hs
923    o change port_rand funtion to allow to set the seed.
924    o fix obscure MNC bug involving conversion between reals and integers
925      - it caused no problems with certain (eg. gcc, ifc) compilers but the
926        new version is now more standards-compliant
927    o adjoint-related modifications
928      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
929      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
930      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
931    
932    checkpoint57e_post
933    o Adding eddy stress controls a la Ferreira et al.
934    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
935    
936    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
937      update output.txt of exp. fizhi-gridalt-hs
938    o add more "Z" dimensions and associated coordinate vars to MNC
939    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
940    o parameter calendarDumps: when set, approximate months (30-31 days) and years
941      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
942      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
943      months and years.  Requires pkg/cal.
944    o diagnostics: add pickup functionality
945      - off by default for backwards compatibility
946      - current version only uses MDSIO -- MNC will be added
947    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
948    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
949    
950    checkpoint57d_post
951    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
952    o modify verification/ideal_2D_oce so that it tests the creation of mnc
953      output from the diagnostics package
954    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
955    o make genmake2 more portable by using ".$FS" instead of ".f" for more
956      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
957    o add coordinate variables to the MNC output from the diagnostics package
958    o change MNC-flags default value: true when useMNC=TRUE
959    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
960      the ability (off by default) to read the grid information using MNC
961    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
962    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
963    o do snap-shot diagnostics at the middle of the time-interval (instead of
964      at the end).
965    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
966      new test for AIM with thSIce + slab-ocean
967    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
968    o move state variable diagnostics to the beginning of the time step ;
969      (note: still needs some work specially for snap-shot diagnostics)
970      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
971    
972    checkpoint57c_post
973    o Change testing option (-ieee) to get closer agreement between g77 & ifort
974    o generate new output.txt files on faulks with g77 & the new -ieee option
975    checkpoint57c_pre
976    
977    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
978      update output.txt of exp. global_ocean.90x40x15
979    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
980      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
981    o add saltFlux(+File) forcing capability with periodicExternalForcing
982    o allow to use pkg diagnostics for GM-Redi & ThSIce output
983    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
984    o improvements for the MNC output from DIAGNOSTICS:
985      - correct handling of the unlimitied dimension
986      - all dims now have associated coordinate variables
987      - variables located at U, V, and Corner ("Z") points are now written
988        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
989        *all* data points are output
990    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
991    o added pkg/seaice/seaice_monitor.F
992    o mdsio_readfield.F can now read files visible only to master MPI process.
993    o pkg/seaice: some test code for ice-modified ocean stress
994    o exf_getffields interpolation defaults to bilinear for all scalar forcing
995      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
996      spurious negative numbers for precipitation and humidity.  Will cause
997      some small numerical differences for integrations using pkg/exf/exf_interp.F.
998    o pkg/ctrl/
999      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1000        May be enabled via doPackDiag
1001      *  introduce z-scaling of
1002         + gradient (doZscalePack) and
1003         + control (doZscaleUnpack)
1004    o pkg/mdsio/
1005      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1006      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1007    
1008    checkpoint57b_post
1009    o simplify options in diagnostics_fill arguments (remove weird combinations)
1010    o fix MNC coordinate variables so that they now contain per-face index
1011      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1012      general, EXCH2 grids are only aligned to a "local" coordinate system
1013    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1014    o Implement instantaneous output within pkg diagnostics:
1015      setting a negative frequency in data.diagnostics produces
1016     "snap-shot" output (as opposed to time-average if freq > 0)
1017    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1018      NOTE: change ptracer diagnostics name: use 2 characters to work with
1019            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1020    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1021      becomes the coordinate variable for the 'T' dimension
1022    o add CF-style coordinate variables to MNC
1023      - just a first cut:  numbers are meaningless on the cubesphere and
1024        missing along the T axis but otherwise it works!
1025    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1026    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1027    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1028      this is based directly on what the model compute, so that the content of
1029      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1030    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1031    o clean up build options files for SunOS, in particular
1032      - remove -traditional from xmakedepend
1033      - change -xarch=v9 to -xarch=native for f77
1034      - restore use of make (not gmake)
1035      - add CC=gcc if using g77
1036    o changes per discussion of AM, JMC, & EH3 today:
1037      - move redundant "grid" variables out of "state" -- in preparation of
1038        creating proper CF-style coordinate variables and in recognition
1039        that any/all grid variables can be easily copied (eg. w/NCO) from
1040        the grid files into any of the other NetCDF files
1041      - *always* output grid variables with MDSIO (this will eventually be
1042        changed)
1043      - output MNC grid file if useMNC is true
1044    o every instance of _END_MASTER() has been found and replaced with
1045      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1046      preprocessors
1047    o re-arrange diagnostics pkg initialisation:
1048     - allow each package to extend the available diagnostics list
1049     - add some checking and fix small problems (multi-threaded, ...)
1050     - new S/R diagnostics_fill (replace fill_diagnostics):
1051       look through the short list of active diag. (instead of the long list)
1052       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1053    
1054    checkpoint57a_post
1055    o this set of changes restores TAMC compatibility
1056      tested for global_ocean.90x40x15 adjoint on trough
1057      (what a pain)
1058    
1059    checkpoint57a_pre
1060    o some modifs in tools/build_options for sunos
1061    o call ctrl_pack for ctrl at end for optimcycle=0
1062    
1063    checkpoint57
1064    o add horizontal bi-harmonic viscosity for vertical velocity
1065      - new parameter viscA4W (defaults to viscA4)
1066      - affects only non-hydrostatic code
1067      - to be done: no-slip lateral boundary conditions
1068    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1069    o implement Implicit Vertical advection for pTracers
1070    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1071      (implemented also for implicit vertical diffusion & advection)
1072    o OBCS: extend application of tracer open boundary conditions
1073      to a strip beyond the boundary of width Olx/Oly
1074    o add call monitor to TAF set of required calls (flow directives)
1075      and include in natl_box_adjoint
1076    o untangle a few ifdefs related to cost, ctrl, autodiff
1077      untangel a few ALLOW_ECCO_OPTIMIZATION
1078    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1079      (theta2, salt2 in ecco_cost_weights)
1080    
1081    checkpoint56c_post
1082    o OBCS as control variables
1083      - update ctrl_ad_diff.list, obcs_ad_diff.list
1084      - remove balance of obcs controls from default
1085      - fix index bug nobcs in ctrl_init
1086      - fix dummy fields filen in ctrl_pack
1087      - add dummy weights for obcs
1088    o lsopt: comment out fort.94 output
1089    o optim:
1090      - remove unnecessary header files
1091      - adjusted namelists
1092      - add xerbla.F to Makefile
1093    o exf:
1094      - multiple modifications of exf_check_range
1095      - unit change in exf_init_runoff from [m/year] to [m/s]
1096    o mdsio:
1097      - i/o-vector change debugLevel from debLevA to debLevB
1098    
1099    checkpoint56b_post
1100    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1101      is called from DO_THE_MODEL_IO
1102      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1103      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1104      - clean up PTRACERS_WRITE_TIMEAVE a little
1105    o add another verification experiment that tests both the cfc-pkg and
1106      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1107      reactive tendencies treated inline with regular timestepping
1108    o testreport previously did a lousy job of comparing small numbers, so
1109      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1110      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1111      testreport.
1112    o ptracers_monitor: bug fix for MPI
1113    
1114    checkpoint56a_post
1115    o GCHEM: finish reorganizating the package
1116      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1117        (introduces another 3D-array for each passive tracer, but only if
1118        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1119        gchemTendency is not needed because the timestep is done separately)
1120      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1121      - GCHEM is now---more or less cleanly---separate from PTRACERS
1122      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1123        so clear to me how that should be done in a general way.
1124    o CFC: improve formatting of output in CFC_ATMOS
1125    o PTRACERS:
1126      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1127        that ALL experiments with ptracers enable can be checked. This makes
1128        GCHEM_MONITOR obsolete.
1129      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1130        monitorFreq
1131      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1132    o add PTRACERS (PTR0[1-5]) to testreport output
1133    o exf_check_range:
1134      * default changed to .TRUE.
1135      * will check values for niter0 if debLevA, every timestep if debLevB
1136      * STOP in exf_check_range if 'out of range'
1137      * range chosen generous to allow for potential extema
1138      TBD: a version with stricter range
1139           permitted range would be runtime parameters
1140    o GMredi:
1141      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1142      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1143      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1144    o GCHEM:
1145      - move call to GCHEM_FORCING_SEP, so that it is now called before
1146        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1147      - introduced a useGCHEM runtime flag and applied it everywhere.
1148      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1149        this flag is now only visible within GCHEM-pkg routines.
1150      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1151        be replaced by a 3D array that is computed before thermodynamics; for
1152        this, the tracer ID iTracer had to be included into the parameter list
1153        of ptracers_forcing
1154      - set up forward_step to call gchem_forcing, that will replace
1155        gchem_forcing_int in ptracers_forcing
1156      - cleaning up
1157    o small cleaning of exch2: remove files that are also in eesupp/src
1158    
1159    checkpoint56
1160    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1161    o mnc: cleanup "full" files--fixes out-of-memory problem
1162    o ECCO-GODAE
1163      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1164      * fully merged and updated from SIO code
1165        windstress sign change affects
1166        - exf_inscal_[u/v]stress
1167        - sign of xx_tau[u/v] adjustments
1168        - signs in cost_scat
1169      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1170      * natl_box_adjoint updated and compressed
1171      * 2-level checkpoint switch added
1172        (tested in EXP. 1 of natl_box_adjoint)
1173      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1174    o SVD
1175      * first complete, non-hacked version for SVD calculations
1176      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1177        performed via direct access files admtlm_vector.it????
1178        (via ctrl_[un]pack)
1179      * optimcycle is used for ARPACK iteration counter
1180        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1181      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1182        and add linear transforms where necessary
1183      * controls are initial/final SST, SSS (can be extended; need to check
1184        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1185    o mdsio: filename info to both stderr, stdout
1186    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1187      from sign change
1188    
1189    checkpoint55j_post
1190    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1191      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1192    o add consistent build directories and .cvsignore files to verification
1193    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1194    o make all subroutines 30 or less characters in length for certain older
1195      compilers to work (a thorough search only turns up two routines in
1196      pkg/ptracers)
1197    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1198      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1199    
1200    checkpoint55i_post
1201    o change arrays for total vertical diffusivity (2.D if explicit,
1202      3.D if implicit) ; each ptracer uses its own background value.
1203    o added mnc/NetCDF output capability to ocn_compon_interf
1204      - added bits to verification/cpl_aim+ocn so that it can run on
1205        ITRDA and other clusters without the mpirun "-wd" option
1206    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1207      configuration
1208    o give MNC the ability to create additional files rather than
1209      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1210      - the default is just less than 2GB which is a practical limit
1211        on many systems
1212    o Compute the non-local term using either KPP vertical diffusivity (=default)
1213       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1214    
1215    checkpoint55h_post
1216    o add verification test "vermix"
1217    o remove all the *_ioinc flags and replace with the single global
1218      outputTypesInclusive flag
1219    o allow to set a vertical profile of vertical diffusivity for T & S
1220    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1221    o useMNC moved from data.mnc to data.pkg
1222    
1223    checkpoint55g_post
1224    o Renaming carbon AD experiments to comply with testreport conventions
1225    o Updating adjoint of Held-Suarez hs94.1x64x5
1226    o Fixing directives for non-ECCO forward_step, after ECCO directives
1227      have been fixed to avoid recomp. of do_oceanic_phys
1228      Works well for global_ocean.90x40x15,
1229      but recomp. issue remains for carbon
1230    o Updating adjoint output for natl_box_adjoint after
1231      pkg/ecco has been modified (see taga c55d_post)
1232    
1233    checkpoint55f_post
1234    o rename to timeave_init_fixed
1235    
1236    checkpoint55e_post
1237    o some delicate re-shuffle of store directives to avoid one
1238      extra call of do_oceanic_physics
1239      affects ecco_the_main_loop.F, do_oceanic_physics.F
1240      checkpoint_lev1_directives.h
1241    o NB: this may break global_ocean adjoint temporarily,
1242      but it is clear how to fix it. Will do later, need this now.
1243    
1244    checkpoint55d_post
1245    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1246    o ecco_cost_weights is modified to 1x1 runs
1247    o modifs to allow observations to be read in as
1248      single file or yearly files
1249    o enable to read exf forcing fields as either
1250      single file or yearly files (flag useExfYearlyFields)
1251    checkpoint55d_pre
1252    
1253    o switch between 2-level and 3-level checkpointing
1254    o add ability of MNC to write local and "partial" (eg. 2D slices where
1255      the full 3D field is never actually stored) arrays to NetCDF files
1256      with the correct (that is, the complete multi-dimensional) set of
1257      array indicies
1258      - used in mom_vecinv() to write the diagFreq output
1259      - tested (demonstrated) in verification/aim.5l_cs
1260    o further mnc-ification
1261      - add verification/lab_sea to the list with mnc setups
1262      - fix undefined mnc v-names in cd_code
1263      - add kpp to mnc output (both snapshot and timeave)
1264    o non-hydrostatic code
1265      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1266        in calc_gw.F
1267      - defaults to viscAh
1268      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1269        friction or Leith) in non-hydrostatic mode, as long as there is
1270        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1271    o pkg/cost
1272      extend simple cost functions to treat time mean quantities
1273      (T,U,V) via cost_accumulate_state from cost_tile
1274    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1275        be 2 times larger than the minimum size the advection scheme requires.
1276        now get a perfect conservation of salt in advect_cs test-exp (updated)
1277    o GGL90 (Gaspar's TKE mixed layer)
1278      - add horizontal diffusion of TKE, requires exchanges in
1279        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1280        default. In OPA there is no horizontal diffusion of TKE but the
1281        mixing coefficients are computed from a horizontal average of TKE of
1282        6 points or so. I think that diffusion has a little more physical
1283        justification.
1284      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1285        was in vain)
1286      - mask tke-variable in ggl90_init
1287    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1288    o fix biharmonic diffusion on CS-grid.
1289    o more obcs stuff
1290      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1291        for reading boundary values. This routine is called from
1292        obcs_prescribe_read
1293      - updated obcs_check
1294      - changed sponge layer relaxation parameter units for days to seconds
1295      - turned off sponge layer by default
1296      - changed argument list of OBCS_CALC to myTime+deltaTclock
1297      - fixed about 35 bugs in obcs_external_fields_load
1298    
1299    checkpoint55c_post
1300    o obcs stuff
1301      - new runtime flags useOBCSprescribe, useOBCSbalance
1302      - re-arranged obcs_calc
1303      - moved exf_getobcs to obcs_prescibe_read
1304        obcs_prescibe_read is called after ORLANSKI stuff
1305        and independent of it (executable can contain all).
1306      - updated obcs_check
1307      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1308        These may be necessary only if tangential velocities are
1309        prescribed at OB, not sure, needs testing.
1310    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1311      which simplifies the calls and passes the ifc check-bounds test
1312    
1313    checkpoint55b_post
1314    o add a 2D scalar, Z location, exchange_2 routine.
1315    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1316      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1317      affects advect_cs results (for the wrong reason): update output.txt
1318    o use a more standard discretization for biharmonic viscosity ;
1319     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1320      affects results of dome set-up: update output.txt
1321    o fix gad_advection.F (CubedSphere part), back to version 1.23
1322    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1323    
1324    checkpoint55a_post
1325    o merged code to
1326      * prescribe/read time-dependent open boundaries
1327        (works in conjunction with exf, cal)
1328      * sponge layer code for open boundaries
1329      * each boundary N/S/E/W now has its own CPP option
1330        (healthy for the adjoint)
1331    
1332    checkpoint55
1333    o up-to-date adjoint of previous breaks
1334      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1335      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1336      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1337      - carbon: * remove tr1-related adjoint verification
1338                * add ptracer as control variable
1339    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1340      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1341    
1342    checkpoint54f_post
1343    o in verification/carbin/ remove experiment related to
1344      ALLOW_PASSIVE_TRACER (array tr1 etc)
1345      code_ad/ input_ad/ results_ad
1346    
1347    o add two new packages
1348      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1349        + subject to optimization (memory)
1350      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1351        + subject to reordering (many GOTOs in the original code)
1352        + so far opps is called for every (i,j) point, and then operates in
1353          the vertical; one may want to reorder the scheme in order operate in
1354          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1355          fields)
1356    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1357      - all verification tests compile and run with linux_ia32_g77
1358      - defaults are compatible with current input files--nothing
1359        should change if you were not previously using MNC
1360      - MNC output has been added in numerous places (eg. timeave)
1361        but there are still a few writes not yet do-able with MNC
1362        (this is in progress)
1363      - flags now allow for either/or/both use of MDSIO and MNC and
1364        documentation will soon follow
1365      - numerous small formatting cleanups for ProTeX
1366    o add version info (via BUILD_INFO.h) to MNC and stdout
1367    
1368    checkpoint54e_post
1369    o add two new packages
1370      - pp81 (Packanowski and Philander, 1981), Richardson number and
1371        stratification dependent mixing
1372      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1373      - these scheme operate in a similar manner as KPP (without ghat, of
1374        course), however there is only one diffusivity that is used for both
1375        temperature and salinity (and passive tracers)ç
1376    o add offline package
1377    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1378      provided by Stephanie Dutkiewicz
1379    o genmake2: add ability to search for C compilers and cleanup test output
1380      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1381    
1382    checkpoint54d_post
1383    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1384    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1385      leading to additional shift by 5 days each year of integration
1386       (i.e. leading to considerable offset over the years)
1387    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1388    o start with no AB and no initial filtering (staggerTimeStep):
1389      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1390    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1391      (external loading & cpl import/export stay in forward_step.F)
1392    o update coupling interface to work with new staggerTimeStep
1393    o change MDSIO ptracers_pickup.
1394    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1395    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1396    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1397    
1398    checkpoint54c_post
1399    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1400      this affects (truncation error) output.txt of test-exp:
1401       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1402    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1403    o change Qnet to always be the net heat flux, (+upward).
1404      affects (truncation error) output of natl_box exp.: updated
1405    o define the max number of passive tracers in PTRACERS_SIZE.h
1406    o start to test mnc routinely in exp0
1407    o add sea-ice loading (sIceLoad) as a new forcing field.
1408    
1409    checkpoint54b_post
1410    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1411       impressive on Altix and Opteron systems)
1412    o diagnostics can now write NetCDF files through the mnc package
1413    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1414    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1415    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1416      affects (truncation error) output of lab_sea & natl_box exp.: updated
1417    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1418    
1419    checkpoint54a_post
1420    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1421    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1422    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1423    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1424      + internal_wave (shift in writing cg2d_ini_res)
1425    checkpoint54a_pre
1426    
1427    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1428      - modified verification/lab_sea and natl_box_adjoint accordingly
1429    
1430    checkpoint54
1431    checkpoint53g_post
1432    o prepare splitting of thermodynamics: store convect.counter in common block
1433    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1434      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1435    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1436    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1437    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1438    o restore adjointability
1439    
1440    checkpoint53f_post
1441    o modifications that affect AIM experiment results (update output.txt):
1442      - no advection of S at top interface Nr (pkg/generic_advdiff)
1443      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1444    o AIM pkg:
1445      - include stability function into surf.Flux derivative relative to Tsurf
1446      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1447    
1448    checkpoint53e_post
1449    o merged cylindrical coord configuration
1450    o added rotating_tank experiment
1451    checkpoint53e_pre
1452    
1453    checkpoint53d_post
1454    o faulks upgraded: re-generate output.txt that have changed:
1455       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1456    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1457    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1458    o added Sadourny discretization of Coriolis
1459      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1460      - re-enabled use of omega3 (useAbsVorticity)
1461    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1462      vector-invariant equations
1463      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1464    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1465      hopefully without new bugs
1466      - still to do: biharmonic friction for non-hydrostatic w
1467    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1468    o regenerated output for global_ocean_ebm (using -ieee)
1469    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1470      of mom_common/
1471      - simple re-arrangement of instructions within computing loop
1472    checkpoint53d_pre
1473    
1474    checkpoint53c_post
1475    o new version of coupler for AIM+thSIce and Ocean models
1476     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1477     - land: change Evaporation of snow
1478     - aim with thSIce: fix bug in snow-precip.
1479    o changes to calc_gw.F
1480     - bug fix for w^2 term near the bottom boundary
1481     - (hopefully) improve the lateral slip boundary condtions for use with
1482        partial/looped cells
1483      - because the bug fix changes two verification experiments anyway (exp5
1484        and plume on slope), change the lateral boundary condition from half slip
1485        to the value of no_slip_sides
1486    o ebm package wasnt quite up to the parallel task. Fixed that.
1487    o Adjoint of EBM package + verification
1488      * TLM OK
1489      * ADM not sufficient accuracy yet (needs further testing)
1490    
1491    checkpoint53b_post
1492    o Commiting new energy balance model to repository
1493      * package is pkg/ebm
1494      * verif. is verification/global_ocean_ebm
1495      * references are in ebm_driver.F
1496    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1497    C        Global thermohaline circulation. Part I:
1498    C        Sensitivity to atmospheric moisture transport.
1499    C        J. Climate 12(1), 71-82
1500    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1501    C        Global thermohaline circulation. Part II:
1502    C        Sensitivity with interactive transport.
1503    C        J. Climate 12(1), 83-91
1504    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1505    C        Destabilization of the thermohaline circulation
1506    C        by atmospheric eddy transports.
1507    C        J. Climate 7(12), 1870-1882
1508    o Will need long integration testing.
1509    checkpoint53b_pre
1510    
1511    o created pkg/mom_common in preparation for variable viscosity code
1512    o renamed and split ini_mnc_io
1513    o pkg/land: only liquid water can diffuse or run-off
1514    o AIM using land: soil wetness availability account for snow
1515    o added printMapIncludesZeros to EEPARMS namelist
1516    
1517    checkpoint53a_post
1518    o restore TAMC compatiility for exf_constants.h
1519      (no usage of _d in .h)
1520    o Additional storing in KPP in an attempt to fix
1521      TAMC problem with adjoint of KPP code.
1522      (no success...)
1523      Identical code works fine with TAF.
1524    o Fixed verification/natl_box_adjoint experiments.
1525      Initial conditions for Experiments 4 and 5 are now
1526      set to "SEAICE_initialHEFF=0", which is more reasonable,
1527      and hence gives results closer to that of Experiment 2.
1528      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1529    
1530    checkpoint53
1531    o stable checkpoint with up to date adjoint
1532      TLM tests only run for 1st grdchk at the moment. Its unclear if
1533      this is a code problem or a problem with resetting code for g_
1534      variables that is being autogenerated wrong.
1535      Otherwise:
1536       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1537       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1538         are both still in chaos following their security messes.
1539    
1540    checkpoint52n_post
1541    o various build (mostly genmake2) changes including:
1542      - ability to build/run more easily within Cygwin and MacOS X
1543      - more complicated Makefiles with a stronger dependence on Gnu Make
1544    o pkg/seaice modifications
1545      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1546        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1547        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1548      - changed proxy for geostrophic velocity and updated
1549        verification/lab_sea/results/* accordingly
1550      - removed ADI dynamic solver from pkg/seaice
1551      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1552        they caused a segmentation fault under certain circumstances
1553      - removed unused field WATR
1554    o bug fix in exf-package:
1555      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1556         now reflect that.
1557    o small fixes in the cal-package:
1558      - set reference date to first of January for the 'model'-calendar
1559      - failing of cal_CheckDate in cal_FullDate now actually results in a
1560        warning
1561    o small modifications in exf-package to increase flexibility:
1562      - change climtempfreeze from a constant to a runtime parameter that
1563        is specified in data.exf_clim (default = -1.9)
1564      - introduce runtime parameter windstressmax (default = 2.0) that is
1565        specified in data.exf
1566    o fix in pkg/thsice:
1567      - update Evap (Tsf changes) to be consistent with Latent heat flux
1568      - maintain snow precipitation unchanged (even if Tsf >=0).
1569     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1570    
1571    checkpoint52m_post
1572    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1573      this does not change any of the results, because myIter=0 in swfrac always
1574      lead to jwtype=2 (the default anyway), but the call makes little sense
1575      as a default
1576    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1577    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1578      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1579    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1580    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1581    o extending useSingleCpuIO option to work with new exch2 I/O format
1582      - old-style, missing-tile I/O is still accessible by defining CPP
1583        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1584    o monitor package can write to NetCDF files and/or STDOUT
1585    o fix re-definition bug in MNC_GRID_INIT_ALL()
1586    o doc/api_reference added
1587      - a framework for building an API Reference Manual using all
1588        the "protex" comments embedded in the code
1589      - see pkg/generic_advdiff, pkg/mnc for examples
1590    o MNC:
1591      - make myThid the last argument for all subroutines
1592      - new default for the grid files: NO halos
1593      - add useMNC and other run-time flags
1594      - separate per-file-group handling of the unlimited dimension
1595      - early initialization of MNC w/ flags read at the eeboot stage
1596        and lookup tables set in initialize_fixed
1597      - write all MNC output to a freshly-created directory
1598    o thermodynamics sea-ice (thsice) is now tested with testreport.
1599    o test exp. advect_cs: use the standard cs32 grid ; update output.
1600    o Added functionality to grdchk:
1601      pick global i,j,k position (or nearest wet) where to perform check.
1602    
1603    checkpoint52l_post
1604    o new land formulation:
1605      a) use ground enthalpy as prognostic variable to ensure exact
1606         energy conservation.
1607      b) account for water temperature and for latent heat of freezing
1608         in all processes (rain, run-off, ground storage)
1609      c) compute surface and ground temperature implicitly.
1610    o aim_v23 modification for new land model:
1611      a) Treat separately land / ocean / sea-ice surface fluxes
1612         to allow implicit computation of land & sea-ice surface temp.
1613      b) add snow precipitation.
1614    checkpoint52l_pre
1615    
1616    o fix problem (when 1 tile is empty) in min/max monitor.
1617    o fix bug in timeAve (u,vZetatave in common block)
1618    o no restoring terms under ice for pkg/seaice
1619    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1620    o bug fix for pkg/seaice pickups
1621    o change MNC call locations and add coordinate attributes
1622    o mask vorticity at the corner ; affects global_ocean.cs output
1623    o fix ini_curvilinear_grid ; test CS experiments with mpi
1624    o aim.5l_cs: modify sea-ice fraction input file ; update output
1625    o exf: Adding simple range check routine for exf fields after read
1626    
1627    checkpoint52k_post
1628    o removed top-level directory "diags"
1629      - we migrated these functions to pkg/timeave a long time ago
1630    o fixed bug introduced in pkg/monitor
1631    o accuracy ctrlprec = 32 insuffient for gradient checks using
1632      averaged fields (I/O via cost_averages)
1633      -> use ctrl.h in active_file*.F to control I/O precision.
1634    o paramter list of CALL ADTHE_MAIN_LOOP
1635    o added initial do_the_model_io to ecco
1636    o set all ...Freq to zero after cost_final
1637      taveFreq, dumpFreq, pChkptFreq
1638    o MAIN and ECCO differentiability restored
1639    
1640    checkpoint52j_post
1641    o fix nchklev in tamc.h for global_ocean...
1642    o Bringing flow and store directives up-to-date
1643    o Really weird thing!
1644      call do_the_model_io from the_main_loop with parameters
1645      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1646      TAF places a faulty re-call of initialise_varia
1647      after cost_final call which should not be there!
1648    checkpoint52j_pre
1649    
1650    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1651      error messages
1652    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1653    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1654      debug output
1655    o modfied mdsio_writefield.F to handle non-global files under exch2
1656    o update AIM Cubed-Sphere exp (aim.5l_cs):
1657      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1658    o update AIM Equatorial Channel exp:
1659      use standard aim_v23 pkg and change the SST fields to be more realistic.
1660    o globalFile now works with exch2
1661    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1662      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1663    o limit timeave output for hi-res integrations
1664    
1665    checkpoint52i_post
1666    o removed CPP_EEOPTIONS.h from verification/*/code
1667    o updated the tiling for global_ocean_pressure
1668    checkpoint52i_pre
1669    
1670    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1671      the old pkg/aim).
1672    
1673    checkpoint52h_pre
1674    o shortened offending lines in exch2_send_rx?.template
1675    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1676    o genmake2: add build & execute test for NetCDF code
1677    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1678      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1679    o added useSingleCPUIO flag to monitor.F and mon_out.F
1680    o added temporary hack for sea-ice dynamics on the cube:
1681      metric terms are ignored and it is assumed that
1682      there is no sea-ice on cube faces 1, 2, 4, and 5.
1683    
1684    checkpoint52f_post
1685    o added exch2 cube routines to pkg/exch2
1686    o modified hs94.cs-32x32x5 to use it
1687    o added new grid files to hs94.cs-32x32x5
1688    checkpoint52f_pre
1689    
1690    checkpoint52e_post
1691    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1692      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1693    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1694      to work with implicit vertical advection and AB ;
1695    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1696    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1697     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1698    checkpoint52e_pre
1699    
1700    o fix bug in impldiff when Nr=1 or Nr=2.
1701    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1702    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1703    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1704      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1705    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1706    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1707    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1708    
1709    checkpoint52d_post
1710    o re-tiled many expts to allow comparison in multi-processor mode
1711      - updated output accordingly
1712      - changed hs94.128x64x5 to use intial T from file rather than use the
1713        random number generator
1714    o add infrastructure in model routines for fizhi and gridalt packages
1715    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1716    o changes to permit hi-res, cubed-sphere, configuration
1717      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1718      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1719      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1720        of surface winds for the cube
1721      (A verification experiment, based on global_ocean.cs32x15, but with
1722       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1723       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1724       complete with example surface forcing files and matlab scripts to look
1725       at the output and compare it with that of global_ocean.cs32x15.)
1726    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1727       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1728       to conform to the common rule.
1729    o check-in the first version of the coupler + interfaces for multi-components
1730       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1731       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1732       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1733       - ocean and atmos. share the same horizontal grid (no interpolation).
1734       - exchanges between component and coupler is done in forward_step
1735    o new verification experiment, cpl_aim+ocn:
1736       coupled ocean - AIM atmosphere on cs32 grid.
1737    
1738    checkpoint52d_pre
1739    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1740    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1741    
1742    checkpoint52c_post
1743    o Fixing OPTIONS files for use of exf:
1744      - ALLOW_ECCO not needed
1745      - ECCO_CPPOPTIONS.h should not be included from
1746        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1747        as has been the case in the past
1748      - All cal/exf related options are currently set in
1749        single header file. Should remain so until we
1750        agree on a consistent new policy.
1751    o Removed all CPP options for cal package.
1752      cal has no more CPP options.
1753    o modified STOREs in GAD_ADVECTION
1754    o corrected key comp. for passkey
1755    
1756    checkpoint52b_post
1757    o new version: "thsice" of thermodynamic sea-ice pkg:
1758     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1759     - modify fluxes but do not change theta directly;
1760     - light cleaning of bulk_force pkg (still needed with thsice).
1761     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1762       + output_thsice.txt to test thsice & bulk_force pkgs.
1763    o put back grid & coriolis monitor output.
1764    checkpoint52b_pre
1765    
1766    o call "do_the_model_io" at the beginning (=> dump initial state)
1767    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1768    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1769      (need info on NUMBER_OF_PTRACERS)
1770    o missing PTRACERS headers in some routines
1771    o default tamc.h in pkg/autodiff supposed to crash
1772      to ensure proper customization
1773    
1774    checkpoint52a_post
1775    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1776      - moved surfaceTendencyTice from pkg/seaice to main code
1777      - subroutine FREEZE_SURFACE now limits only surface temperature
1778        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1779        => new output.txt for global_ocean.cs32x15 & global_with_exf
1780      - keep the old version of FREEZE for backward compatibility;
1781        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1782      - corresponding modifs for TAF directives
1783    o added surface flux output variables to TIMEAVE_STATVARS
1784    o time-averaged output for pkg/ptracers
1785    o fix problem with ECCO-related divided adjoint
1786      snapshot file was missing some ad-variables,
1787      but no warning issued by TAF
1788    
1789    checkpoint52a_pre
1790    o some bug fixes for #undef REAL4_IS_SLOW
1791    
1792    checkpoint52 = ecco_c52_e35
1793    o after testing adjoints of checkpoint51u_post
1794    
1795    checkpoint51u_post
1796    o this is the post-merge tag of the ecco-branch
1797      (needs another clean checkout and re-testing)
1798    o various natl_box_adjoint configs and results
1799      but no input fields
1800    o obcs adjoint not yet merged!
1801    o adding ECCO global 1x1 and 2x2 degree configs
1802    o updated/extended some store directives for seaice
1803    o pkg/ecco now containes ecco-specific part of cost function
1804    o top level routines the_main_loop, forward_step
1805      supersede those in model/src/
1806      previous input data.cost now in data.ecco
1807      (new namelist ecco_cost_nml)
1808    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1809    
1810    checkpoint51t_post
1811    o this is the pre-merge tag of the ecco-branch
1812    
1813    checkpoint51s_post
1814    o cleanup: removed various obsolete #define-s
1815    o pkg/grdchk
1816      - renamed 'ph-grd 3' to 'grad-res'
1817      - merged from ecco-branch
1818        (remaining bug fixes for obcs gradient checks)
1819      - additional high-precision output for testreport
1820        (grep for 'precision_grdchk_result')
1821    
1822    checkpoint51r_post
1823    o cleaned up or removed CPP_OPTIONS.h files
1824    o updated results for some of the tests to reflect the new
1825      optfiles (-ieee: -O0 instead of -O3)
1826    
1827    checkpoint51q_post
1828    o cd_code:
1829      - moved cd_scheme.F -> cd_code_scheme.F
1830      - separate read_checkpoint from cd_code_ini_vars.F
1831      - separated cd_code part from write_checkpoint
1832      - updated AD_SOURCE, generated .flow
1833      - added CD_CODE_VARS.h to the_main_loop
1834      - Moving cd_code specific store dir.s to pkg/cd_code
1835    o ctrl package totally restructured
1836      - pack/unpack now optional and decoupled from
1837        xx_/adxx_ I/O
1838      - ctrl_pack/unpack cleaned
1839        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1840      - confined inclusion of AD_CONFIG.h to where necessary.
1841    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1842    
1843    checkpoint51p_post
1844    o create initial cd_code package
1845      - WARNING: the initialization of fields within packages
1846        is broken because INI_FIELDS (where READ_CHECKPOINT is
1847        called) is called *before* PACKAGES_INIT_VARIABLES.
1848        This seems to be backwards since
1849        1) its important to initially zero the entire field including
1850           the "halo" region
1851        2) zeroing needs to be done *before* reading pickup info
1852           and the pickup call might or might not happen in any
1853           particular run
1854      - this needs an overhaul for R2
1855    o cleanup verification/*/code/GMREDI_OPTIONS.h
1856    o cleanup testreport
1857    
1858    checkpoint51o_post
1859    o bringing AD-related verif's up to date with genmake2
1860      - carbon/
1861      - global_ocean.90x40x15/
1862      - hs.94.1x64x5/
1863      - (front_relax/ )
1864    o (more) consistent directory structure for AD-related verif.'s
1865    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1866    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1867    o bug fix in find_alpha.F for MDJWF:
1868      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1869        change rho -> rho-rhoConst
1870      - replace call find_rho to find_rhonum
1871    o initialisation of rFlx extended to full array (required by TAF)
1872      and shifted to thermodynamics
1873    o removed PTRACERS.h in ptracers routine
1874    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1875    o Correcting initialisations for fVerU, fVerV.
1876    o helping TAF to recognize dependency on kUp for
1877      fVerU, fVerV
1878    o Replacing delZ by delR in pkg/ctrl/
1879    checkpoint51o_pre
1880    
1881    o undid all of cp51 pending some cleanups and discussion
1882    o added the [#include "AD_CONFIG.h"] statement to all files that need
1883       it for adjoint/tl #defines
1884     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1885     o removed tools/genmake since it no longer works
1886    
1887    checkpoint51n_post
1888    o modifications to make FREEZE flux visible to pkg/kpp
1889      - moved surfaceTendencyTice from pkg/seaice to main code
1890      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1891      - subroutine FREEZE now limits only surface temperature
1892        (this means new output.txt for global_ocean.90x40x15,
1893         global_ocean.cs32x15, and global_with_exf)
1894    o added surface flux output variables to TIMEAVE_STATVARS
1895    
1896    checkpoint51n_pre
1897    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1898    o added [#include "AD_CONFIG.h"] to all files that use the following
1899      defines:
1900      - ALLOW_ADJOINT_RUN
1901      - ALLOW_TANGENTLINEAR_RUN
1902      - ALLOW_ECCO_OPTIMIZATION
1903    
1904    checkpoint51m_post
1905    o incorporating changes to get TAMC/TAF working in genmake2
1906      - added new TAMC/TAF targets to the Makefile
1907      - various cleanups related to package handling
1908      - these changes should have no impact on the forward model
1909    
1910    checkpoint51l_post
1911    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1912     - faster algorithm for cal_addtime.F
1913     - higher precision arithmetic, where needed
1914     - pkg/exf *startdate variables changed from calendar date to
1915       model integration time
1916    
1917    checkpoint51l_pre
1918    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1919    o enable to apply restoring on S & T only in a latitude band.
1920    o update output (external_forcing_surf modif. change truncation errors)
1921       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1922    
1923    checkpoint51k_post
1924    o change default to: useNHMTerms=.FALSE.
1925     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1926       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1927     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1928        exp1, ideal_2D_oce
1929     - change data file of oceanic exp (leave the results unchanged for now)
1930       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1931    o set gravitySign automatically according to the vertical coordinate used
1932      (and change sign: back to "logical" value: +1 when R increases downward)
1933    o added an include barrier to the default CPP_OPTIONS.h and
1934      removed the #include "PACKAGES_CONFIG.h" from it
1935    o fix a bug in mom_fluxform (from chk51j_post)
1936    
1937    checkpoint51j_post
1938    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1939    o adjusted some flow directives (dynamics, thermodynamics)
1940    o added cubed-sphere case to test cost function
1941    o heckpoint_lev?_directives.h now include
1942      pkg-specific directives, whenever those are enabled.
1943    o Moving pkg-specific flow directives to corresponding pkg
1944      Moving pkg-specific differentiation list to corresponding pkg
1945      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1946      ---> conventions are
1947           - pkg_ad.flow
1948           - pkg_ad_diff.list
1949           - pkg_ad_check_lev?_dir.h
1950    
1951    checkpoint51i_post
1952    o merge of the branch-genmake2
1953      - knowingly breaks the older genmake
1954      - automatic generation of all ALLOW_${PKG_NAME} defines
1955      - new testreport supersedes older testscript
1956    o large number of package inclusion and header cleanups
1957    checkpoint51i_pre
1958    
1959    o new output for adjoin of global ocean vector invariant
1960    o fix for checkpoint of thermodynamic seaice and bulk_force
1961    o Steph gchem various cleanups
1962    
1963    checkpoint 51h_pre
1964    o fixed some single quotes
1965    o modify gchem pkg to be more versatile
1966    o modifications to clean up dic pkg
1967    o add pkg/cfc
1968    
1969    checkpoint51g_post
1970    o provide links for ARPACK and ADM*TLM
1971    o start removing verification/vero/
1972    o update AD-related stuff
1973      (in particular some IF-statements in model/src/ routines)
1974    o adding to verification/global_ocean.90x40x15/ adjoint of
1975      vector invariant setup
1976    
1977    checkpoint51f_post
1978    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1979    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1980      of tracer Green's fucntions for ocean inversion project.
1981    
1982    checkpoint51f_pre
1983    o Added on-the-fly spatial interpolation capability
1984        "USE_EXF_INTERPOLATION" to pkg/exf.
1985      - This is a temporary Cartesian-grid hack until
1986        the super-duper ESMF coupler becomes available.
1987      - See verification/global_with_exf/README for usage example.
1988      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1989        flags and modified pkg/seaice accordingly.
1990    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1991        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1992        non-local transport term.
1993    
1994    checkpoint51e_post
1995    o pkg/mom_vecinv:
1996      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1997      - add time-ave diagnostic of vorticity advection.
1998    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1999    o atmospheric geopotential: - include water vapor effect;
2000                                - use p^kappa in p* scaling.
2001    o land pkg: read initial state from files.
2002    o AIM : add stratospheric drag in the upper level
2003    
2004    checkpoint51d_post
2005    o change function ILNBLNK (=> last non-blank char.) to return zero
2006      (instead of the string length) when the string. char is empty
2007    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2008    o modif's to restore TAMC compatibility
2009      - avoid "_d" constructs in PARAMETER declarations
2010      - avoid interrupting lines by comment lines
2011    o Use cluster local disks for purely local I/O
2012      vs. globally visible disks needed for ctrl stuff
2013      (merged from ecco-branch)
2014      - new active_file_loc... and mdsio_..._loc routines
2015      - affected packages: autodiff, ctrl, grdchk, mdsio
2016    
2017    checkpoint51c_post
2018    o introducing integer flag debugLevel
2019      - debLevZero: suppress all output
2020      - debLevA: standard
2021      - debLevB: equivalent to current debugMode=.TRUE.
2022    o introducing pathname variable mdsioLocalDir for mdsio
2023      that can be specified at runtime
2024      (relevant for cluster I/O to local disk)
2025    `
2026    >>>checkpoint51b_post
2027    adjoint of ptracers
2028    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2029    o extended state in checkpoint_lev?, etc.
2030    o alternative ctrl/cost with tr1 or ptracer
2031    o new comlev1_bibj_ptracers
2032    o new ptracers.flow
2033    o made ptracers_forcing same as external_forcing_s
2034    o added verification for adjoint with ptracers
2035      - adm. grdchk fail so far
2036      - tlm. grdchk OK
2037      - checked tapelev/comlev recomputations: OK
2038    <<<checkpoint51b_pre
2039    
2040    checkpoint51a_post
2041    o added code for biogeochemistry package
2042      - new pkgs: dic, gchem
2043      - new subroutine in ptracers
2044    o modify code for biogeo packages
2045      - in model/src and pkg/ptracers
2046    
2047    checkpoint51
2048    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2049      - autodiff, ctrl, exf, grdchk, seaice
2050      kept separate packages
2051      - cost, ecco, obcs
2052    o updating verification/internal_wave, verification/lab_sea
2053      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2054    
2055    checkpoint50i_post
2056    o Preparing next differentiable checkpoint and sync
2057      of MAIN vs. ecco-branch
2058      - 1st step: this one is differentiable
2059      - 2nd step: next(! not this) checkpoint will have updated packages
2060                  from ecco-branch)
2061    
2062    checkpoint50h_post
2063    o new package "land": provide surface BC for AIM.
2064    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2065    o AIM: use true log-P extrapolation for near surface temp (= as in
2066        F.Molteni paper) ; update aim.5l_cs output.
2067    o New variable in PARM03 for more flexible pickups
2068    o somewhat cleaned package initialisation sequence for
2069      ctrl/ cost/ ecco/ in packages_... routines
2070    
2071    checkpoint50g_post
2072    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2073      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2074      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2075        made the default because of faster convergence than ADI
2076    
2077    checkpoint50f_post
2078    o exf totally restructured
2079      - replaced all exf_set_ routines by one generic exf_set_gen.F
2080        and made sure it's still differentiable
2081      - split exf_getffields.F into new exf_bulkformulae.F
2082      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2083      - updated adjoint/makefile and relevant verif. accordingly
2084    
2085    checkpoint50f_pre
2086     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2087          + change Evap over land. (update aim.5l_cs output)
2088     o added missing .cvsignores and made uniform across expts
2089     o changed configuration of tidal_basin_2d expt
2090     o added pkg/debug functions for tracing code in fatal crashes
2091     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2092     o new fn in pkg/monitor to stop model if solution grows too big
2093     o removed lots of single quotes from comments
2094    
2095    checkpoint50e_post
2096    o make KPP work with PTRACERS
2097     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2098       nearly a copy of kpp_transport_s
2099     - there is no analogue to SurfaceTendencyS, so I have to use
2100       gPtr(of the surface layer) instead
2101    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2102    checkpoint50e_pre
2103    
2104    checkpoint50d_post
2105    o change kpp output from multiple-record state files to single-record state
2106      files analogous to write_state.F
2107    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2108      analogous to the cg2d-related output.
2109    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2110      so that writing to internal file fn (with length 512) fails.
2111    checkpoint50d_pre
2112    
2113    checkpoint50c_post
2114    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2115    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2116    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2117    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2118    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2119    
2120    checkpoint50c_pre
2121    Merging from release1_p13:
2122    o bug fix for pkg/seaice dynamic solver
2123    o Added SEAICE_initialHEFF to pkg/seaice
2124    
2125    checkpoint50b_post
2126    o store u*,v* in gU,V instead of in guNm1,gvNm1
2127    o in order to put the momForcing out of the Adams-Bashforth:
2128      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2129      to timestep.F
2130    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2131    o re-generate output for highly sensitive test-exp:
2132       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2133    
2134    checkpoint50b_pre
2135    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2136    o corrected CPP option mismatch in exf_Bulk... functions for case
2137      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2138    
2139    checkpoint50a_post
2140    o Bug fix for merging between c50 and KPP.
2141      ikey was passed from thermodynamics to kpp_calc via
2142      common block rather than being recomputed in kpp_calc,
2143      in contradiction with new key itdkey.
2144      New key ikppkey created, and tamc.h headers updated.
2145    
2146    checkpoint50
2147    - 2nd step of merge with ecco-branch:
2148      merge changes in ecco-branch back into main trunk
2149    - bug fix in find_alpha
2150    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2151    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2152    - merged some sliced AD support routines
2153    
2154    checkpoint49
2155    merged from ecco-branch:
2156    o exf:
2157      - Enable initialisation of forcing fields to constant
2158        (runtime) values.
2159      - in exf_getffields.F
2160        Reduce i-/j-loop to interior domain, discarding overlaps.
2161        That also fixes wrong TAF-key computations for key_1, key_2
2162        with bulf formulae.
2163      - exf_init.F modify #ifdef for exf_init_evap
2164      - exf_getffieldrec.F, ctrl_getrec.F
2165        The following INT-usages are not safe:
2166          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2167          fldcount = int(fldsecs/fldperiod) + 1
2168        and were modified.
2169    o autodiff: checkpoint_lev...
2170      - updated storing for bulk formulae (some arrays were missing)
2171      - added state for seaice package
2172      - synchronized with main branch
2173    o DIVA:
2174      Modif.s in
2175      - the_main_loop.F
2176      - the_model_main.F
2177      and added cost_final_restore.F cost_final_store.F
2178      o With these changes, it is possible to fully separate
2179        the first forward run to compute the cost function (mdthe_main_loop)
2180        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2181        into separate model executions.
2182        This enables better tuning of DIVA to given queue sizes.
2183      o Loss of cost function value in consecutive DIVA runs is
2184        fixed by storing to 'costfinal' file.
2185      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2186        beginning/end of adjoint integration is accounted for.
2187      The current changes apply to TAF-1.4.26.
2188      TAF has one remaining bug, requiring one manual change
2189      (see MITgcm manual).
2190    o cal: synchronized between MAIN and ecco-branch
2191    
2192    checkpoint48i_post
2193    o Changes to restore differentiability of code w.r.t. previous tag
2194      (mostly adding new routines to make list and replacing
2195      pressure by totPhiHyd).
2196    o Updated and merged grdchk package
2197      - has both ADM and TLM checks
2198      - works for single- and multi-proc.
2199      - output cleaned
2200      - worked successfully for parallel DIVA
2201    o genmake:
2202      - Adding -platform=SP4
2203      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2204    o Modif. for DIVA:
2205      ctrl_unpack should not be called in intermediate DIVA interval.
2206      (similar thing would apply for active files such as
2207      tbar, sbar, psbar, which should not be reinitialised;
2208      only relevant for ecco-branch)
2209    
2210    checkpoint48h_post
2211    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2212    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2213    o Added SEAICE_initialHEFF to pkg/seaice
2214    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2215    
2216    checkpoint48g_post
2217    --- EOS:
2218    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2219      store total Potential in totPhyHyd for diagnostics & EOS.
2220    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2221    --- Pressure/geopotential gradient:
2222    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2223    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2224      ( changes results of global_ocean_pressure )
2225    o NLFS + z-coord.: add eta*Rho' contribution.
2226    o accurate phiHyd when using interface-W at the middle between 2 centers
2227     ( changes results of ideal_2D_oce )
2228    o includes r* 2nd term in potential gradient.
2229    
2230    checkpoint48f_post
2231    Merging from release1_p12:
2232    o Modifications for using pkg/exf with pkg/seaice
2233      - improved description of the various forcing configurations
2234      - added basic radiation bulk formulae to pkg/exf
2235      - units/sign fix for evap computation in exf_getffields.F
2236      - updated verification/global_with_exf/results/output.txt
2237    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2238      (SBO) core products, including oceanic mass, center-of-mass,
2239      angular, and bottom pressure (see pkg/sbo/README.sbo).
2240    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2241      to avoid negative values in shallow regions.
2242      - updated verification/natl_box/results/output.txt
2243      - updated verification/lab_sea/results/output.txt
2244    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2245    o Added useSingleCpuIO option (see PARAMS.h).
2246    o Updated useSingleCpuIO option in mdsio_writefield.F to
2247      work with multi-field files, e.g., for single-file pickup.
2248    o pkg/seaice:
2249      - bug fix in growth.F: QNET for no shortwave case
2250      - added HeffFile for specifying initial sea-ice thickness
2251      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2252    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2253      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2254    o pkg/seaice:
2255      - adjoint-friendly modifications
2256      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2257    
2258    checkpoint48e_post
2259    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2260    o dynamics: change definition of computational domain & adapt mom_fluxform
2261      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2262    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2263        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2264        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2265        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2266        inverted_barometer solid-body.cs-32x32x1
2267      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2268    
2269    checkpoint48d_post
2270    o in preparation for r*:
2271     a) use pre-computed gradient of hydrostatic potential:
2272        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2273     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2274        => affects results of glob_oce_pressure (different truncation error)  
2275      update output.txt of ideal_2D_oce & global_ocean_pressure
2276    
2277    checkpoint48d_pre
2278    o in preparation for r*:
2279      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2280      pass the 2 comp. of the grad. as arguments to momentum S/R.
2281      but for the moment, only used if it does not change the results.
2282    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2283    
2284    checkpoint48c_post
2285    Modifications in treatment of initial flux forcing controls
2286    to avoid extra storing of flux fields.
2287    
2288    checkpoint48c_pre
2289    o Added tidal_basin_2d experiment (currently 1D!)
2290    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2291    
2292    checkpoint48b_post
2293    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2294     (modification to pressure gradient not yet implemented)
2295    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2296      (for U & V) that are used for vertical advection of momentum.
2297    
2298    checkpoint48a_post
2299    o In preparation for r*, use temp. array to compute vertical transport
2300       in flux-form momentum pkg. => change results of few test-exp.
2301      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2302                        lab_sea, natl_box & plume_on_slope
2303    
2304    checkpoint48
2305    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2306    
2307    checkpoint47j_post
2308    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2309    o moved adexch from forward_step to addummy_in_stepping
2310    o added exch in ctrl_map_...
2311    o aveFreq.=0. at end of cost_final to avoid overwrite in
2312      reverse checkpointing loop
2313    o Yet more changes in gmredi:
2314      * adgmredi_calc_tensor
2315        avoiding all recomputation of gmredi_slope_limit
2316      * adgmredi_x/y/rtransport
2317        added flag for excessive storing to avoid recomp. of
2318        u/v/rtans, dTdx/y/z
2319        -> this is not really necessary and very memory-consuming
2320      * adgmredi_slope_psi:
2321        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2322      * gmredi_slope_limit
2323        re-activated full calculation of taperfct for case 'ac02'
2324    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2325    
2326    checkpoint47i_post
2327    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2328    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2329      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2330    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2331    o gmredi: fix few bugs.
2332    
2333    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2334    This will be a good checkpoint to plug into the ecco-branch.
2335    o few modif.'s to get latest version adjointed
2336      (mainly kick out code in ini_linear_phisurf)
2337    o modif's to run adjoint with exactConserv
2338    o case GM_BOLUS_ADVEC should be cleaned
2339      S/R gmredi_slope_psi should be cleaned
2340    o verification/carbon now has exactConserv=.TRUE.
2341    
2342    checkpoint47g_post
2343    o time-average AIM output: becomes independent from statvars time-average
2344      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2345    o After TAF bug fix:
2346      Tested adjoint of gmredi package.
2347      Tests were done with checkpoint47 rather than with latest
2348      checkpoint47f_post since the latter is broken for the adjoint
2349      verification/carbon/ contains both ADM and TLM gradient checks.
2350    Here they are, before they get changed/lost/stolen.
2351    Mostly modif.'s to fix numerical sensitivities.
2352    Gradient checks OK for
2353    - GM_taper_scheme:
2354      * clipping
2355      * ac02
2356      * linear
2357      * glw91
2358      * dm95
2359      * ldd97
2360    - GMREDI_OPTIONS:
2361      * GM_VISBECK_VARIABLE_K
2362      * GM_NON_UNITY_DIAGONAL
2363      * GM_EXTRA_DIAGONAL
2364      * GM_BOLUS_ADVEC
2365    in conjunction with data.gmredi parameters to be checked in
2366    in a few minutes under verification/carbon/code/
2367    
2368    checkpoint47f_post
2369    Merging from release1_p10:
2370    o modifications for using pkg/exf with pkg/seaice
2371      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2372        and SEAICE_EXTERNAL_FLUXES
2373      - pkg/exf CPP options EXF_READ_EVAP and
2374        EXF_NO_BULK_COMPUTATIONS
2375      - usage examples are Experiments 8 and 9 in
2376        verification/lab_sea/README
2377      - verification/lab_sea default experiment now uses
2378        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2379    
2380    checkpoint47e_post
2381    o created a tag prior to creating a branch
2382    
2383    checkpoint47d_post
2384    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2385      at the bottom boundary had an erroneous half slip boundary condition
2386    o added bottom drag and no slip boundary condition capabilities to
2387      oceanic pressure coordinates code
2388    o added new verification experiment global_ocean_pressure, this experiment is
2389      also described in the tutorial section of the manual
2390    checkpoint47d_pre
2391    
2392    checkpoint47c_post
2393    o Added a verification experiment for a global cubed-sphere ocean run
2394      -  verification/global_ocean.cubed32x32x30
2395      -  uses pkg/therm_seaice and pkg/bulk_forcing
2396    
2397    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2398    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2399      when using P-coordinate; only implemented for atmospheric config.
2400    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2401      NOTES: requires option NONLIN_FRSURF to be "#define".
2402    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2403    
2404    checkpoint47b_post
2405    Merging from release1_p9:
2406    o pkg/seaice
2407      - removed GOTO's and added taf directives
2408      - double precision constants to reduce the g77 (Linux)
2409        to F77 (SGI) differences reported in release1_p8
2410    o tools/genmake
2411      - added SGI options
2412    o verification/testscript
2413      - updated to that of checkpoint47a_post
2414    o verification/global_ocean.90x40x15/input/eedata
2415      - modified for SGI f77 compatibility
2416    o verification/lab_sea
2417      - added description of sea-ice model
2418      - added missing matlab routines
2419      - added test of thermodynamics parallelization
2420    
2421    checkpoint47a_post
2422    o new pkg: aim_v23
2423     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2424       for now, keep the same surface forcing as before.
2425     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2426     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2427     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2428    o add diagnostic of surface correction term in monitor output
2429    
2430    o bulk_force and therm_seaice
2431    - Two packages:  bulk_force (Bulk forcing)
2432      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2433    - Earlier integration from Stephaine Dutkiewicz
2434      and Patrick Heimbach.
2435    - Two ifdef statements for compile time,
2436       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2437    
2438    checkpoint47
2439    differentiable version of checkpoint46n_post
2440    o bug fix in quasihydrostaticterms
2441    o * "clean" adjoint code (in terms of extensive recomputations)
2442        can now be obtained for all GMREDI options (i.e. for
2443        - GM_VISBECK_VARIABLE_K
2444        - GM_NON_UNITY_DIAGONAL
2445        - GM_EXTRA_DIAGONAL
2446        - GM_BOLUS_ADVEC )
2447      * However, wrong gradient check problem remains unsolved.
2448      * New CPP options have been introduced for different
2449        tapering schemes
2450    o external_fields_load now part of differentiation list
2451    o pressure needs multiple storing;
2452      would be nice to have store_pressure at beginning or
2453      end of forward_step, e.g. by having phiHyd global (5-dim.)
2454      (NB: pressure is needed for certain cases in find_rho,
2455      which is also invoked through convective_adjustment).
2456    o recomputations in find_rho for cases
2457     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2458    o #define ATMOSPHERIC_LOADING should be differentiable
2459    o ini_forcing shifted to begining of initialise_varia
2460    o Incorporating QNVS line search routines into MITgcm
2461      (this is separate code, and therefore not under pkg)
2462      lsopt/, optim/
2463    o Updated verification/carbon/
2464      - #define GM_VISBECK_VARIABLE_K
2465      - GM_taper_scheme    = 'ldd97'    
2466    
2467    checkpoint46n_post
2468    Merging from release1_p8:
2469    o verification/natl_box:
2470      updating new external_fields_load routine
2471    o New package: pkg/seaice
2472      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2473      The sea-ice code is based on Hibler (1979-1980).
2474      Two sea-ice dynamic solvers, ADI and LSR, are included.
2475      In addition to computing prognostic sea-ice variables and diagnosing
2476      the forcing/external data fields that drive the ocean model,
2477      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2478      The implied surface heat flux is then stored in variable
2479      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2480      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2481      non-local transport term.  Because this call precedes model
2482      thermodynamics, temperature under sea-ice may not be "exactly" at
2483      the freezing point by the time theta is dumped or time-averaged.
2484      N.B.: fairly large differences in accuracy occur across
2485            different platforms/compilers; comparison between
2486            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2487            generated output gives:
2488       T           S           U           V
2489      C D M    c        m  s        m  s        m  s        m  s
2490      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2491      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2492      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2493    
2494      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2495    o GAD:
2496      - generated new common blocks to account for call of
2497        same gad routines with differing traceridentities
2498        (needed to modify tracerIdentity indices in GAD.h)
2499      - generated separate common blocks for case useCubedSphereExchange
2500        (Department of Futurology)
2501      - parameter lists to gmredi_?transport: added tracerIdentity
2502      - added new key indices to tamc.h
2503    o external_fields_load:
2504      - added this routine to TAF list
2505      - needed to make some common blocks global and additional storing
2506        along the same lines as exf package (checkpoint_lev?_directives.h)
2507    o exf:
2508      updated external forcing package
2509      - bug fixes carried over from ecco-branch
2510        (missing OBCS_OPTIONS.h in two routines)
2511      - enable easy to use "no forcing".
2512      - added exf I/O for atmospheric loading
2513      - added exf I/O for runoff data
2514      - transfered scaling between exf <-> MITgcm to exf namelist
2515    o Adding new verification experiment global_with_exf.
2516      This verification experiment is almost identical to the
2517      global_ocean.90x40x15 experiment, except that it uses
2518      the exf (and cal) package instead of the
2519      external_fields_load routine (cf README file).
2520    
2521    checkpoint46m_post
2522    o modified testscript to return -- when there are no lines of "%MON" output
2523    o added new flag "quasiHydrostatic" for QH mode
2524      and new routine quasihydrostaticterms()
2525    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2526      New routine: mom_u_coriolis_nh()
2527    o fixed sign of non-hydrostatic metric terms in u and v equations.
2528      Depend on correct sign of gravitySign.
2529    o added work.pc* to .cvsignore in aim directories using ifc
2530    o introduced flag for controllin non-hydrostatic metric terms
2531    o removed gravitySign from PARM04
2532    o switched to g77/ifc from pgf77 in aim experiments
2533    
2534    checkpoint46l_post
2535    o made convective adjustment work with pressure coordinates:
2536     - changed the direction of k-loop in convective_adjustment.F for the
2537       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2538     - adjusted the reference pressure k-index in convective_adjustment.F
2539     - adjusted the convection condition in convect.F (in analogy to
2540       calc_ivdc.F)
2541     - convective_adjustment no longer computes anything on the halos
2542     - removed the warnings about negative salinity from find_rho.F and
2543       find_alpha.F; instead the new routine look_for_neg_salinity, called
2544       at the beginning of find_rho, find_alpha, and find_beta, does a
2545       check of the entire slice, if CPP-option
2546       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2547    checkpoint46l_pre
2548    
2549    checkpoint46k_post
2550    o fixed the verification/global_ocean.90x40x15 experiment:
2551     - new bathymetry (the world according to A., JMC, and M.)
2552     - new initial fields and forcing fields (*.bin files)
2553     - new POLY3.COEFFS (for the next release one should switch to a full
2554       equation of state: JMD95P or MDJWF)
2555     - fixed several errors and redundancies in the data file
2556     - experiment uses looped cells
2557     - added matlab directory with diagnostic scripts for plotting of output
2558    
2559    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2560     - read AIM physics parameters from a file (data.aimphys)
2561     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2562    
2563    checkpoint46j_post
2564    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2565    o move wVel computation at the end of the time step, in S/R integr_continuity
2566    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2567    o update timeave pkg for wVel diagnostic.
2568    checkpoint46j_pre
2569    
2570    checkpoint46i_post
2571    o Clean up AIM package (and keep the results unchanged):
2572      include CPP_OPTION and use IMPLICT NONE in all routines ;
2573      declare all the variables _RL ; use _d 0 for all numerical constants.
2574      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2575    
2576    checkpoint46h_post
2577    o cleaned up the use of rhoNil and rhoConst.
2578      - rhoNil should only appear in the LINEAR equation of state, everywhere
2579        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2580        and the dynamical equations are all divided by rhoConst
2581    o introduced new parameter rhoConstFresh, a reference density of fresh
2582      water, to remove the fresh water flux's dependence on rhoNil. The default
2583      value is 999.8 kg/m^3
2584    o cleanup up external_forcing.F and external_forcing_surf.F
2585      - can now be used by both OCEANIC and OCEANICP
2586    checkpoint46h_pre
2587    
2588     Added code to convert surface volume flux (fresh water) into
2589     a mass flux when using P coordinates in the ocean (OCEANICP).
2590     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2591    
2592    checkpoint46g_post
2593    o Include a new diagnostic variable phiHydLow for the ocean model
2594      - in z-coordinates, it is the bottom pressure anomaly
2595      - in p-coordinates, it is the sea surface elevation
2596      - in both cases, these variable have global drift, reflecting the mass
2597        drift in z-coordinates and the volume drift in p-coordinates
2598      - included time averaging for phiHydLow, be aware of the drift!
2599    o depth-dependent computation of Bo_surf for pressure coordinates
2600      in the ocean (buoyancyRelation='OCEANICP')
2601      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2602        Theta, Salinity, and Pressure in the parameter list. This routine is
2603        presently contained in find_rho.F. This routine does not give the
2604        correct density for 'POLY3', which would be a z-dependent reference
2605        density.
2606    o cleaned up find_rho
2607      - removed obsolete 'eqn' from the parameter list.
2608    o added two new verification experiments: gop and goz
2609      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2610    checkpoint46g_pre
2611    
2612    checkpoint46f_post
2613    o Enable tangent linear (forward mode) gradient checks:
2614      - extended active file handling to g_... files
2615      - added TANGENT_SIMULATION to theSimulationMode
2616      - extended grdchk package accordingly
2617    o added tangent linear setup in verification/carbon/code_ftl
2618    o added adjoint setup in verification/front_relax/code_ad
2619    
2620    checkpoint46e_post
2621    o Added new equation of state -> MDJWF
2622      - EOS of McDougall et al., 2002, JAOT, submitted
2623      - caveat: the equation of state is only valid for a smaller (more
2624        realistic?) range of values than JMD95P/Z and UNESCO
2625      - added masks to the calculation of pressure in store_pressure
2626      - added more check values for density in check_eos (ini_eos.F), some of
2627        the old check values are out of the range of the MDJWF-eos, so don't
2628        expect perfect matches for those
2629    checkpoint46e_pre
2630    
2631    checkpoint46d_post
2632    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2633      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2634      case of pressure coordinates. eosType='JMD95Z' in
2635      combination with buoyancyRelation='OCEANICP' now causes an error.
2636    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2637      in find_alpha/beta.
2638    checkpoint46d_pre
2639    
2640    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2641      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2642    
2643    checkpoint46c_post
2644    o Changes necessary for ocean in p-coordinates
2645     -  Added new buoyancy relation = 'OCEANICP'
2646     -  Added new parameters = gravitySign (this used to be contained inside
2647        the factor dRdZ which I added when we first switched to R coordinates).
2648     X GM/Redi is not compatible (yet)
2649     X bottom drag and no-slip need to be debugged.
2650    checkpoint46c_pre
2651    
2652    checkpoint46b_post
2653    o Added new equation of state -> JMD95Z and JMD95P
2654      - EOS of Jackett and McDougall, 1995, JAOT
2655      - moved all EOS parameters into EOS.h
2656      - new routines ini_eos.F, store_pressure.F
2657    o Added UNESCO EOS, but not recommended because it requires
2658      in-situ temperature (see JMD95)
2659    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2660      unesco.f to be used with POLY3
2661    checkpoint46b_pre
2662    
2663    checkpoint46a_post
2664    o Added (atmospheric) pressure loading
2665      - new field in FFIELDS.h, etc...
2666      - new cpp flag ATMOSPHERIC_LOADING
2667    o Changed hFacC to _hFacC in calc_phi_hyd.F
2668    o Added SHORTWAVE_HEATING to some files for consistency
2669    checkpoint46a_pre
2670    
2671    checkpoint46
2672    further merges from release1_p5
2673    o new ctrl package
2674      - adopted from ECCO environment to enable optimization
2675      - added Eliassen Palm fluxes to controls
2676    o added Eliassen Palm flux controls to gradient check package
2677    o cost package
2678      - Compatible with new ctrl package
2679      - added Eliassen Palm cost hooks
2680      - modif's of existing cost functions
2681    o Adjoint-related bug fixes in kpp:
2682      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2683      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2684    o autodiff package
2685      - flow directives:
2686        + new for S/R do_the_model_io
2687        + enhanced for S/R checkpoint
2688        + new gmredi.flow
2689      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2690        disable adcommon.h/g_common.h by default.
2691      - fixed problem for adjoint of global_max
2692    o modified verification/carbon/
2693    o New setup for adjoint of global_ocean
2694    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2695    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2696    o incorporated hooks for sponge layer code (external_forcing.F)
2697    
2698    checkpoint45d_post
2699    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2700    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2701      (affects plume_on_slope "cg2d" output)
2702    o add new parameter deltaTfreesurf for free-surface time stepping
2703    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2704    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2705    o change phiMin in exp1 (to agree with documentation)
2706    o add new flags:
2707     - T,S forcing inside/outside Adams-Bashforth
2708     - turn off temp,salt advection and/or forcing
2709     - for each tracer, define internal flag for multiDimAdvection & A-B
2710    o monitor: change definition of KE to check conservation of Energy
2711    
2712    checkpoint45c_post
2713    o Removed f90 comments ("!")
2714    o Modified initialisations to enable exf package for MITgcm
2715      (without invoking ECCO_PACKAGE).
2716    o modifications to gradient check package (Martin Losch)
2717      - enable centered differences
2718      - modified format of standard output
2719    
2720    checkpoint45b_post
2721    o cleaned exchange calls in cg2d
2722    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2723    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2724      to configure barotropic setup (Martin Losch)
2725    o moved some initialisations within bi,bj loop in dynamics
2726      (TAF flow dependency)
2727    o in initialise_varia, moved call packages_init_variables
2728      before convective_adjustment_init
2729      (corresponding adjustment of TAF tape initialisation).
2730    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2731    
2732    checkpoint45a_post
2733    o compute Rho over the whole domain (extend iMin,jMin indices)
2734    o specific exchange for X-slice domain (case Ny=1)
2735    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2736    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2737    
2738    checkpoint44h_post = checkpoint45
2739    o Fix to restore differentiability:
2740      place at which packages_init_variables is called in
2741      initialise_varia is crucial for reverse control flow.
2742    o modifications in GMRedi to enable stable adjoint
2743      (corresponding modif's in thermodynamics, dynamics)
2744    o added missing hook for sponge layer code in external_forcing
2745    o modified test cost functions
2746    o storing in gad_advection (plus removal of write(0,*)!
2747    o missing headers TR1.h added in convective_adjustment routines
2748    o errorMessageUnit set non-equal zero in eeboot
2749      (conflict on some platforms, e.g. IBM SP3)
2750    o modified carbon verif.
2751    
2752    checkpoint44h_pre
2753    o vertical grid option: allow to put the Interface at the middle between
2754      2 cell-centers ; replace delZ in pkg/kpp by drF.
2755    o GM Advective form: Tracers are advected using the residual transport (=
2756      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2757    
2758    checkpoint44g_post
2759    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2760      results) ; ifdef missing in thermodynamics.F
2761    
2762    checkpoint44f_pre,checkpoint44f_post
2763    o added PTRACERS package
2764      This allows an arbitrary number of passive tracers to be integrated
2765      forward simultaneously with the dynamicaly model.
2766      + Implemented so far:
2767        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2768        - I/O and checkpointing
2769        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2770      + Not implemented so far:
2771        - KPP
2772        - OBCS
2773      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2774        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2775        line in data.pkg.
2776      + This package is disabled by default since it increases storage.
2777    
2778    
2779    o testscript: added -cleanup option
2780    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2781                 b) enable to filter 2D fields.
2782    
2783    checkpoint44e_pre,post
2784    o re-wrote convective adjustment to use pre-calculated weights
2785      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2786      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2787      Original calls to convect() still in place.
2788    
2789    chkpt44d_pre,post
2790    o added missing EXCLUDE_MONITOR flags
2791    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2792      (incompatible typ in MIN/MAX expressions caused problems
2793      on IBM SP3)
2794    o in genmake added variable MAKEDEPEND
2795      plus resetting for case SunOS
2796    o added timer_stats.c routine for IBM SP3
2797    o removed variables in dynamics
2798    !!! I forgot to create tag chkpt44d_pre !!!
2799    !!! But chkpt44d_pre = chkpt44c_post    !!!
2800    
2801    o real fresh water flux implemented with non-linear free-surface.
2802    
2803    chkpt44c_pre,post
2804    o few fix (mask in shap_s2, EmPmR in external_field_load,
2805      USE_NATURAL_BCS in solve_for_P);
2806    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2807    
2808    checkpoint44b_pre/_post
2809    o merge of relevant stuff from the ecco-branch:
2810      - genmake: removed $S64 overwrite for case SunOS
2811      - pkg/exf: update and corrections for field swapping and obcs
2812      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2813                  harmonized between ECCO and MITgcm
2814      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2815                      updated checkpointing_lev... lists for obcs
2816      - model/src: minor changes in forward_step, plot_field
2817                   added directive for divided adjoint in the_main_loop
2818      - pkg/mdsio: added mdsio_gl_slice
2819    
2820    o check parameters & config (chkpt44a_pre,post)
2821    o OBC and NonLin_FrSurf.
2822    
2823    checkpoint44
2824    o fix bug in mom_vi_del2uv
2825    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2826    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2827    o update AIM experiments (NCEP input files)
2828    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2829    o added some stuff for AD
2830    
2831    checkpoint43
2832    o added two new advection tests
2833    o added global 4x4 degree ocean test
2834    o added test of H&S94 with free surface on cube
2835    o some final mods for gradient check, adjoint,...
2836    
2837    checkpoint42
2838      Fixed AD-related problems:
2839    o Store directives up-to-date with re-arranged Adams-Bashforth
2840      (mainly thermodynamics.F)
2841    o New store directives for multi-dim. advection schemes
2842      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2843      * new common block and key passkey
2844      (mainly gad_advection.F)
2845    o Modified store directives for split of dynamics/thermodynamics
2846      for the case ALLOW_KPP
2847    o Cleaned argument list for timestep_tracer.F
2848    
2849    checkpoint41
2850    o re-formatted/added comments in prologues of key subroutines
2851      to work with protex
2852    
2853    checkpoint40
2854    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2855    o added FLT (floats) package from Arne along with demo. experiment
2856    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2857      implementation of forward-in-time forcing terms
2858    o more mods for non-linear free-surface including new variable
2859    o modified multi-dim method to work on cube
2860    o bug fix in KPP (from DM)
2861    
2862    checkpoint40pre9
2863    o added DST advection schemes
2864    o fix MPI bug on SGI's
2865    o modifications for non-linear free-surface
2866    o fixed conditionals for fixed flow/passive tracer only mode
2867    o added tension/strain form of stress tensor
2868    o changes to commenting of arguments for TAF/TAMC
2869    o added/updated many matlab scripts
2870    o added multi-dimensional advection method for tracers
2871      
2872    checkpoint40pre8
2873    o new package rw/
2874      Added method for dumping intermediate local arrays:
2875      mdsio_writetile - same as mdsio_writefield except works from inside
2876                        bi,bj loop
2877      mdsio_writelocal - same as mdsio_writetile except works for local
2878                         arrays
2879      write_local_r? - higher-level wrapper for mdsio_writelocal
2880      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2881      Example given at end of mom_vecinv.F that dumps some local arrays.
2882    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2883      control flux-form versus vector invariant code.
2884      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2885      or genmake -DISABLE ...
2886    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2887      (additional storing is now needed for case vecinv;
2888      currently nothing implemented to switch this storing off
2889      in case fluxform is used since no CPP flag available).
2890    
2891    checkpoint40pre7
2892    o bug fix in dynamics.F
2893      calc_viscosity called before k=1,Nr loop.
2894    o added some #ifdef's ALLOW_PASSIVE_TRACER
2895    o cleaned initialisations in ctrl_map_ini
2896      related to TAF
2897    
2898    checkpoint40pre6
2899    o split dynamics into thermodynamics & dynamics
2900    o corresponding split of calc_diffusivity into
2901      calc_diffusivity, calc_viscosity
2902      (kpp_calc_diff, kpp_calc_visc).
2903    o Added diffkr, kapgm to control variables
2904    o bug fix in gmredi_slope_limit for ldd97
2905    
2906    checkpoint40pre5
2907    o proper initialization of Adams-Bashforth time stepping
2908      + uses forward step for very first step of model (iter=0)
2909    o re-generated *all* output since almost all output is modified by this
2910      change (sorry but we've been putting this one off for about 2 years)
2911      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2912        *not* regenerated since they are already out of date and I don't
2913        want to create the impression that they are suddenly working.
2914    o removed KAP stuff for DEC's
2915    o modified/added many .cvsignore files in */code and */input
2916    o added new expt "solid-body.cs-32x32x1"
2917      + this uses an alternative form of ini_curvilinear_grid.F which
2918        is not necessarily any better than the current one...
2919    
2920    checkpoint40pre4
2921    o added re-initialisations of utrans,vtrans,rtrans in
2922      calc_common_factors which are crucial for TAF.
2923    o extended iMin,jMin range for calc_common_factors,
2924      calc_diffusivity
2925    o added option ALLOW_PASSIVE_TRACER
2926    o a few minor updates and fixes
2927    
2928    checkpoint40pre3
2929    o created calc_gtr1.F for gad package
2930    o split the_main_loop and re-introduced forward_step
2931    o some recomputations of nIter0 for TAMC
2932    
2933    checkpoint40pre2
2934    o Updated to latest branch of AJA, JMC
2935    o Added gradient check package
2936    o Added routines for passive tracer handling
2937    o Added carbon sequestration sensitivity experiment
2938    
2939    checkpoint39
2940     o Modifications and fixes to support TAMC
2941       (mainly missing or wrong directives)
2942     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2943       in addummy_in_stepping
2944     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2945     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2946     o Included following packages:
2947       cal: calendar
2948       exf: external forcing
2949       ecco: essential routines to control use of cal, exf
2950             (NB: this is not the full ECCO environment)
2951     o disabled some packages by default in genmake
2952    
2953    checkpoint38
2954     o see notes_c37_adj.txt
2955     o corrected wrong layer index in external_forcing_t
2956     o replaced the_main_loop/forward_step by the_main_loop
2957     o removed forceoutput from write_state
2958       (replaced criteria for initial/final state)
2959     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2960    
2961    checkpoint37
2962     o mdsio.F routine split and packaged in pkg/mdsio
2963       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2964        used unless genmake -disable=mdsio)
2965     o allow a more precise surface-geopotential gradient for the atmosphere
2966       taking into account the change in space of Alpha (=1/rho) at the surface.
2967     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2968       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2969     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2970       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2971       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2972     o Time-Average diagnostics defined as a pseudo package "timeave".
2973     o pickup files : old pickup (before c35) did not work with new code (c35
2974       and after) unless activating 2 commented lines in initialise-varia.
2975     o Non-Hydrostatic pickup file Pb fixed.
2976     o bug with Rigid-lid version (since c35) fixed.  
2977    
2978    checkpoint36
2979     o implement Crank-Nickelson barotropic time-stepping
2980     o recover Time-Average diagnostics
2981     o fix Pb in checkpoint (PR#19)
2982     o AIM become a standard package ; clean unused CPP_kees
2983    
2984    checkpoint35
2985     o subtantial rewrite of dynamics.f
2986     o allows staggered time-stepping
2987     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2988     o added bottom drag (linear + quadratic)
2989    
2990    checkpoint34
2991     o Modified exchange routines for correct reverse simulation.
2992     o Added verification output to comply with bug fix in impldiff.F
2993       as of c33 (exp2, natl_box).
2994     o Corrected store directives in dynamics.F
2995     o Corrected array boundaries in impldiff.F
2996     o Corrected array dimensions in gmredi.
2997       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2998     o Added routine GLOBAL_SUM_INT to global_sum.F
2999     o Added mdsio_gl.F for ECCO purposes.
3000    
3001    checkpoint33
3002     o Fixed bug in lower BC in impldiff.F
3003     o Fixed confusion about units of forcing arrays in FFIELDS.h
3004       namely Fu,Fv,Qnet,Qsw,EmPmR:
3005       - Removed verification/natl_box/code/external_fields_scale.F
3006         (did not differ from that in model/src)
3007       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3008         (see FFIELDS.h for description)
3009       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3010         kpp_calc.F and kpp_transport_t.F
3011       - Removed model/src/external_fields_scale.F and calls to it
3012       - verification/natl_box uses flux data with "atmospheric" sign so
3013         a special version of external_fields_load.F is used to
3014         change the data as it's read in. This way, the arrays
3015         have the right units and signs at all times tha a user could
3016         possibly use them.
3017     o Corrected genmake to delete a temporary file during configuration
3018    
3019    checkpoint32
3020     o Scaling of forcing fields moved from external_forcing.F to
3021       external_fields_scale.F, called directly after loading fields.
3022     o Surface relaxation terms added to surface tendency fields in
3023       extra subroutine.
3024     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3025       fields.
3026     o Changes in GMRedi to comply with packaging structure.
3027     o Modifications and bug fixes in KPP package.
3028     o Verification experiment for KPP added (verification/nat_box/)
3029    
3030    checkpoint31
3031     o Packages interface brought in line with defined standard
3032       -> new routines packages_...F
3033       -> changes in initialise_fixed.F, initialise_varia.F
3034       -> enables initialisation interface for ECCO package
3035     o Rescaling of external forcing fields immediately after read
3036       (removed from external_forcing.F)
3037       -> new: surface_fields_scale.F
3038       -> affects ini_foorcing.F, external_fields_load.F
3039     o Computation of surface tendencies before tendency updates.
3040       -> new: external_forcing_surf.F
3041     o Change of variable names useGMRedi, useKPP, useECCO
3042     o Further changes in dynamics.F, impldiff.F for TAMC
3043     o Tested for experiments 0, 2, 4.
3044       - not yet tested for GMRedi.
3045       - not yet tested for KPP.
3046    
3047    checkpoint30
3048     o Updates for OBCs
3049     o New experiment for test OBCs (internal_wave)
3050     o New output.txt in verification/exp4/results/
3051     o Updates for KPP: calculation of viscosity corrected, new variables
3052       kpp_dumpFreq and kpp_taveFreq
3053     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3054       and entry for T90 in genmake
3055    
3056    checkpoint29
3057     o packaged KPP and GM/Redi
3058    
3059    checkpoint28
3060     o Corrected initialization of hFacMin for difference vertical coordinates
3061     o Modified calculation of partial cell thickness to more robust algorithm
3062     o config_summary.F: replaced write_1D_... by write_0D_...
3063       read_write.F: added subroutines write_0D_...
3064     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3065       included some initialisations required for TAMC.
3066     o routine calc_isoslopes: modified sqrt computation to make it
3067       differentiable for zero argument.
3068     o routines dynamics, impldiff:
3069       included store directives and tape key computations required for TAMC.
3070     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3071    
3072  checkpoint27  checkpoint27
3073   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
3074     formulation works properly with variable resolution.     formulation works properly with variable resolution.

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