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revision 1.194 by dimitri, Thu Oct 23 07:14:48 2003 UTC revision 1.778 by mlosch, Wed Mar 14 15:44:24 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o shelfice: add a few diagnostics
8    
9    checkpoint58w_post
10    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
11      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
12      (and replace horiVertRatio in NH code).
13      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
14                         and tutorial_plume_on_slope (sensitive to truncation)
15    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
16      directly to drive seaice model (C-grid only)
17    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
18     - reintroduce computation of wind from stress,
19     - compute tau (in exf_bulkformulae.F) from windstress averaged to
20       mass points to avoid tau = 0
21     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
22    o rdmnc.m: make it work with "global" files created with gluemnc
23    o rdmnc.m : some improvements in dealing with singleton dimension
24      (tested on all testreport mnc output files).
25    o genmake2: disable pkg/profiles if netcdf test fails.
26    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
27    o move call to cal_readparms up to make calendar parameters/variable available
28      to all packages
29    
30    checkpoint58v_post
31    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
32      useDynP_inEos_Zc tested.
33    o pkg/exf: changes to properly interpolate/mask/scale initial fields
34    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
35      and portions thereof.  See read_cs.txt for description and examples.
36    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
37      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
38      following the great-circle arc between those 2 points.
39    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
40      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
41    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
42     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
43     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
44     - still needs work (not working with some options ; efficiency to improve)
45       and serious testing.
46     - use this scheme for temperature & salinity in 2 advection test exp.:
47       advect_xy & advect_xz, respectively.
48    
49    checkpoint58u_post
50    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
51    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
52    o testreport: add option "-skipdir" to skip some test.
53    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
54      momentum calculation.
55    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
56    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
57      remove checkpoint.F and the_correction_step.F (no longer used);
58      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
59    o add option (linFSConserveTr) to correct for tracer source/sink due to
60      Linear Free surface
61    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
62    o pkg/thsice: fix reading mnc-pickups
63    
64    checkpoint58t_post
65    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
66    o pkg/mdsio:
67     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
68       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
69       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
70     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
71     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
72       either MDS_READ_FIELD or MDS_WRITE_FIELD )
73     - new S/R (to replace MDSWRITEMETA), which allows to write more
74       informations (variable names, time ...) to meta files.
75     - modify rdmds.m to give back the meta file content.
76    o pkg/diagnostics: change vertical interpolation to be safer, and more
77       flexible (define p-levels to interpolate to in data.diagnostics);
78      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
79       diagnostic pointer.
80    o pkg/seaice: more cleaning up of seaice_growth, added many comments
81    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
82    o fix multi-category seaice:
83     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
84       SEAICE_MULTICATEGORY
85     - fix short wave heat flux
86    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
87       and allow to use EVP solver. Change forward lab_sea: test both EVP
88       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
89    o Initial check-in of lab_sea adjoint
90      (very similar to natl_box_adjoint/code_seaice)
91      * used C-grid and EVP solver
92      * used KPP, GM/Redi
93      * uses inAdExact=.TRUE.
94      * gradient checks fail for both ADM and TLM
95        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
96        f.d. gradients actually seem more problematic than ADM, TLM gradients;
97        issue is related to forward mismatch between g77 an ifort
98    o pkg/seaice: overhaul of thermodynamics
99     - growth.F and groatb.F are replaced by new routine seaice_growth.F
100     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
101     - move a few global fields out of SEAICE.h into seaice_growth.F and
102       make them 2D (FICE/QNETO/ ...)
103     - remove FO (it is the same as QNETO)
104     - introduce a few local fields to avoid modifying external fields such
105       as atemp, etc.
106    
107    checkpoint58s_post
108    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
109      changed exf_set_gen.F so that
110        genperiod=0 means input file is one time-constant field and
111        genperiod=-12 means input file contains 12 monthly means
112    o CG2D: use pre-computed solver main-diagonal (stored in common block);
113      this affects truncation error ; generate new output file for exp. which
114      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
115        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
116        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
117        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
118        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
119        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
120    o start implementation of deep-atmosphere and anelastic formulation
121    o verification: remove 2nd copy of input files and use script "prepare_run"
122      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
123    o mom_common/vecinv/fluxform: fix a few initialisation isssues
124    o profiles: fix for multithreaded case
125    
126    o diagnostics: rename few diags:
127      s/'PRESSURE'/'RCENTER '/g
128      s/'TICE    '/'oceFreez'/g
129      s/'TAUX    '/'oceTAUX '/g
130      s/'TAUY    '/'oceTAUY '/g
131      s/'SWFLUX  '/'oceQsw  '/g
132      s/DIFx/DFxE/g
133      s/DIFy/DFyE/g
134      and add few ocean-forcing diagnostics:
135      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
136    o modifications to pkg/seaice/growth.F and budget.F, which change results of
137      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
138      as actual snow thickness.  It now refers everywhere to effective snow
139      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
140    
141    checkpoint58r_post
142    o modifications to pkg/seaice/growth.F, which change results of
143      lab_sea experiment: fixes pertain to melting snow over open water, to
144      masking EVAP under sea ice, and to using the correct AREA variable for
145      computations of EVAP, PRECIP, HSNOW, and GHEFF
146    o add ability to read bathy, salt, and theta using MNC (off by def)
147    o add flooding algorithm and advection of HSNOW for pkg/seaice;
148      both are turned off by default and do no change any results
149    o seaice advection with pkg/thsice: a step toward the use of non-linear
150      advection scheme, but #ifdef or commented out for now (requires more EXCH).
151    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
152      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
153      in natl_box (affects results @ truncation level: update output.txt)
154    o multi-threading and IO:
155      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
156      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
157        (needed to work with SingleCpuIO): tested in all verif. exp.
158    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
159      affects the results (but none of the verification test uses this scheme).
160    o Adding some pkg/diagnostics capability to pkg/seaice
161      (will certainly be subject to changes)
162    o ctrl: adding new control variables:
163      lwflux, lwdown, evap, snowprecip, apressure, runoff
164    
165    checkpoint58q_post
166    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
167      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
168      high_res_cube configuration by 4% on Columbia.
169    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
170      add (in global_with_exf/code) a version of EXF_INTERP_READ without
171      dynamical allocation (seems to work in multi-threaded).
172    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
173      single CPU io) so that TAF does not have to see EESUPPORT.h
174    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
175    
176    checkpoint58p_post
177    o obcs: stop if obcs is used with useCDscheme = .true.
178    o shelfice:
179     - fix a sign error so that no slip at shelfice interface works
180     - remove stop for combination non-hydrostatic code and shelfice. That does
181       not mean, that the results are correct, but at least they are numerically
182       stable
183    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
184    o added adjoint exch routined for all exch*3d* routines
185      and updated flow directives
186    
187    checkpoint58o_post
188    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
189      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
190    o change controling S/R for writing pickup file (new S/R do_write_pickup)
191      and clean-up reading/writing of pickup files.
192    o fix local version of read/write pickup (NH part) in rotating_tank/code
193    o simplify EXCH interface:
194     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
195     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
196    o added the regrid package
197    o shelfice:
198     - add a simple boundary layer scheme to reduce noise
199     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
200    
201    checkpoint58n_post
202    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
203       local variable (not in common block).
204    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
205      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
206      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
207        to work with SingleCpuIO.
208    o add "_d 0" to real constant of pkg/cfc subroutines ;
209       update exp. cfc_exemple & tutorial_cfc_offline output files.
210    o multi-threading and IO:
211      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
212        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
213      - barrier before and after reading.
214      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
215      - avoid using MDS_WRITELOCAL for LAND pkg output.
216      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
217        common-block variables ; Allows multi-threading with master-thread IO.
218    o change default MAX_NO_THREADS from 32 to 4 ;
219      and stop cleanly when MAX_NO_THREADS is too small.
220    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
221    
222    checkpoint58m_post
223    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
224       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
225    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
226       keep global_ocean.90x40x15 (for AD testing) with former secondary test
227       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
228    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
229        add MITgcm_tutorials (= code + all the tutorials)
230    o ecco, option to compute cost for total ssh (mean+anom)
231    o consistent with addition of ptracer and ssh in pkg/profiles
232    o profiles: adding ptracer and ssh
233    o testreport: change multi-test output-file name
234      (from output.txt.{name} to output.{name}.txt)
235    o profiles: now ok for mutli-tiles case
236    o seaice: add 4 parameters for different advection schemes for area,
237      (effective) seaice thickness, enthalphy, and snow height. Their default
238      is the standard parameter SEAICEadvScheme
239    o calc_gw:
240     - add cosFacU in zonal viscous flux (harmonic.visc.).
241     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
242       of tutorial_plume_on_slope.
243    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
244    o calc_gw: true flux-form, account for horizontal grid spacing.
245      update rotating_tank results, but not plume_on_slope (affected at
246      truncation level, 11 digits).
247    
248    checkpoint58l_post
249    o calc_gw:
250     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
251     - remove side-drag for now (need to fix it); update plume_on_slope results.
252     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
253    o commit code to make SST/SSS weights spatially variable
254      (based on either variable in-situ or variable initial T/S weights)
255    o pkg/ecco:
256      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
257        now based on horizontally varying weights wthetaLev, wsaltLev
258      * cost_averagesflags now returns year indices in addition to day, month
259      * sflux balance is performed on annual basis
260        (sflxumm, sfluxmm2, bal_sfluxmm)
261      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
262        including separate counting and multipliers
263    o pkg/rbcs
264      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
265    
266    checkpoint58k_post
267    o testreport:
268     - always build in dir. "build" (if not there, mkdir build instead of building
269       & running in input)
270     - run in dir run (if it exists), in build otherwise.
271     - call prepare_run (if input/prepare_run exists)
272     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
273    o pkg/exf modifications to interpolation and rotation routines for more
274       reasonable treatment of North Pole singularity: for tracers North Pole
275       value is set to northernmost zonal-mean value, for zonal velocity it is
276       set to zero, and for meridional velocity it is set to northernmost value.
277    o pkg/exf/exf_check_range.F
278     - add tile index to diagnostics and move stop statement to the very
279       end of the routine.
280    o pkg/diagnostics: (diagnostics_main_init.F)
281      define title of isomorphic variables according to the current config.
282    o pkg/thsice with pkg/seaice dynamics:
283    - fix domain of computation (interior only, required for exf) and do exchanges
284    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
285    o towards a standard way of dealing with multi-threading in MONITOR
286      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
287    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
288       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
289    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
290    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
291    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
292       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
293    o tracer advection:
294     - clean-up and simplify calc_common_factors.F
295     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
296       advection subroutine (but still not used within DST advection S/R)
297    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
298    
299    checkpoint58j_post
300    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
301      from file (collects calls previously in FORWARD_STEP)
302    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
303    o adjoint store dir. adjusted accordingly
304    o genmake2
305      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
306    
307    checkpoint58i_post
308    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
309      on wind stress (SEAICEstressFactor defaults to 1.)
310    o Total number of Timers is finite (<=40): comment out 2 non-essential one
311      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
312    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
313      on CS-grid: no longer loosing mass.
314    o exf & curvilinear-grid: no longer modify longitude xC & xG.
315    o pkg/ggl90: fix sloppy output and fix a bug
316    o pkg/seaice: added SEAICEuseEVPpickup parameter
317      - Set to false in order to start EVP solver with
318        non-EVP pickup files when using SEAICEuseEVP
319      - fix sign error in diffusion in seaice_calc_rhs
320    
321    checkpoint58h_post
322    * Modifications for bottom topography control
323      o replace hFacC by _hFacC at various places
324      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
325      o add non-self-adjoint cg2d_nsa
326      o update autodiff support routines
327      o re-initialise hfac after ctrl_depth_ini
328      o works for 5x5 box, doesnt work for global_ocean.90x40x15
329    * Adding verification for 5x5 box (4-layer) bottom topography control
330    
331    checkpoint58g_post
332    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
333       used for mean seasonal cycle, mean diurnal cycle); add an example
334       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
335    o pkg/ggl90:
336      - add parameter (minimum surface kinetic energy)
337      - fix bug (avoiding division by zero)
338    o couple pkg/thsice to pkg/seaice:
339      - modify advection in seaice to accomodate new scalar fields to be advected
340      - only muliDimAdection scheme work with seaice/thsice
341      - mapping of thsice-variables to seaice-variables, back and forth
342      - does not break the verification experiments, but does not give the
343        desired results either
344    o pkg/seaice
345      - make (default) second order advection a bit less confusing?
346    
347    checkpoint58f_post
348    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
349      to pkg/seaice):
350      - new routines thsice_map_exf and thsice_get_exf provide the interface
351      - add an additional formal parameter to thsice_solve4temp
352    o pkg/exf:
353      - add new fields wspeed, snowprecip (to be able to couple to thsice)
354      - correct Stefan-Boltzmann constant
355      - new parameter for longwave surface emittance
356      - separate some stuff from exf_bulkformulae into new routines  
357        exf_radiation, exf_wind
358      - add new parameters and constants: longwave emissivity for ocean, ice
359        and snow, evaporation parameters over ice
360      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
361        either wind from stress or stress from wind
362    o pkg/thSIce:
363    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
364    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
365       and THSICE_CALC_THICKN
366    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
367    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
368      to make debugging easier.
369    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
370    o pkg/bulk_force:
371      - clean-up comments and parameters ;
372      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
373    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
374      generate new output for test-experiment: aim.5l_cs.thSI
375    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
376      testreport accordingly
377    
378    checkpoint58e_post
379    o SEAICE_CGRID adjoint done
380    o R_STAR adjoint implemented.
381      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
382      * need to sort out init. of h0facc, etc.
383    o Make pkg/profile fully independent of ecco,cost, etc. stuff
384      to be able to use it in pure forward.
385    
386    checkpoint58d_post
387    o upgrade simple test-experiment to tutorial example:
388     step.1: duplicate the experiment and (step.2) will remove the old copy.
389      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
390      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
391      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
392      tutorial_global_oce_biogeo    <- copy of dic_example
393      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
394      tutorial_plume_on_slope       <- copy of plume_on_slope
395      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
396      tutorial_global_oce_optim     <- empty for now (David ?)
397      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
398     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
399    o correct a sign problem in cost_scat.F
400    o obcs and ptracers: fix boundary conditions for advections schemes
401      with larger stencil
402    o thsice adjoint: start
403    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
404      completeness
405    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
406      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
407    o ptracers adjoint:
408      * avoid extensive recomputatations
409      * fix missing re-init. of gptr (missed by TAF)
410    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
411      me to turn off the excessive output to STDOUT that this package produces
412    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
413      and add those terms in Vector-Invariant formulation.
414    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
415      if the control period (xx_hfluxperiod etc) is 0
416    o in profiles pkg, clean routines and fix details
417    o in ecco pkg, reading ssh data:
418      fix problem in case the model does not start at iter0=0
419    o fix mnc-pickup/restart for ptracers
420    o new package prifiles:
421      code to compute profile-based cost by Gael Forget
422      (modifs in ecco, ctrl, autodiff)
423    o Benign bug fix in initialization (spotted by M. Mazloff) of
424      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
425    
426    checkpoint58c_post
427    o adjoint: finish NLFS adjoint and provide reference output in
428      verification/global_ocean.90x40x15/results_ad_nlfs
429    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
430      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
431      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
432      with SEAICE_CGRID defined.
433    o move calendarDumps from "data" to "data.cal" and clean-up the code
434      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
435    o add useEXF & useCAL flags (for now, set in hard-coded way)
436    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
437      (were missing in NH mode, and wrong in quasihydrostatic mode).
438      waiting for Chris updated version of calc_gw to add those CALLs.
439    o fix bug in quasihydrostatic S/R ;
440      add a test for this option: global_ocean.90x40x15.qshyd
441    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
442      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
443    o add on/off flag useOffLine for package OFFLINE
444    o seaice:
445      - modify advection so that it works also on the C-grid
446      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
447        problem in multi-tile runs with C-grid
448      - add flags for clipping ice velocities and/or masking solver forcing
449      - fix drag (ocean on ice) formulation and a bug that caused noise in the
450        C-grid solver
451      - added a few comments to seaice_diffusion.F
452      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
453        are now exclusive)
454      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
455        required re-ordering the code a little:
456       + make DAIRN global variable (defined in SEAICE)
457       + move computation of the viscosities eta and zeta into a new separate
458         routine (because I need to recompute them in seaice_ocean_stress.F)
459    
460    checkpoint58b_post
461    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
462      update output.txt of exp. aim.5l_cs.thSI
463    o various mnc cleanups and improvements:
464      + shrink lookup tables by factor of ~4
465      + better error reporting when running out of lookup space
466      + able to handle longer path/file names (up to 500 chars)
467    o adjoint:
468      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
469      - TBD: "hidden" mom_vecinv recomp. in dynamics
470    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
471     (allow to differentiate between forcing components using new integer flags:
472      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
473     and add new flag to put Dissipation tendency out of Adams-Bashforth.
474    o ecco
475      - enable trend removal from SSH anomaly obs.
476    o adjoint
477      - a fix for PmEpR when #undef EXACT_CONSERV
478      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
479      - try to fix "hidden" recomp. in forward_step for NLFS
480        (NLFS seems broken sometimes after I checked it in)
481    o seaice:
482     - add c-grid version of the dynamic solver:
483       + three new routines that are the c-grid substitute lsr, dynsolver
484         and ostres
485       + put a few fields that were local to dynsolver into global common
486         blocks, so that I can move the computation of stresses etc into
487         seaice_lsr (saves coding but may break the adjoint).
488     - replace more hardwired parameters by runtime parameters
489     - add ice masks that mask the rhs of the implicit solvers where there
490       is no ice (commented out in seaice_dynsolver, because i am not sure
491       if this works properly), eventually this should replace the clipping
492       of ice velocities in seaice_dynsolver to +/-40cm/s.
493    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
494      include it only where its needed
495    o move balancing of fluxes before the call of external_forcing_surf
496    o seaice:
497      - correct units of turning angles (now they are really in degrees)
498      - move computation of GWATX/Y out of main routine into dynsolver
499      - initialize GWATX/Y in seaice_init
500    o Apply mask on Fresh-Water flux (needed for SSH forcing).
501      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
502    o seaice: add runtime flags for turning angles (default to zero)
503    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
504      and trend from exf forcing and ctrl control adjustments
505    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
506      (since checkpoint57x_post)
507    o change the default rotation period to 86164.s = the Earth rotation
508    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
509      and based on a reference stratification. Tested within hs94.cs-32x32x5.
510    o seaice advection: add code for choosing between the default (2nd order
511      central differences) and multiDim advection schemes provided by
512      pkg/generic_advdiff
513    o seaice:
514      - removed all references to SEAICE_GRID.h fields from
515        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
516        (cubed-sphere configuration will change a little)
517      - grid computations in seaice_init are obsolete now.
518      - cleaned up code a little so that is easier to read (hopefully).
519      - added new (better?) discretizations of default advection and diffusion
520        (turn on with SEAICEuseFluxForm)
521      - replace 1 in 3d global fields by kSurface in growth.F
522      
523    checkpoint58a_post
524    o seaice:
525      - bug fix in advect.F
526    o shelfice:
527      - separate shelfice load anomaly from pload (breaks with time
528        dependent forcing), => introduce constant field shelficeLoadAnomaly.
529        Its default is 0., but it may be computed more cleverly from (unknown)
530        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
531        done offline. A good approximation of the pressure load anomaly is
532        necessary to avoid large initial adjustment processes underneath
533        deep-reaching shelfice.
534      - small fix in ISOMIP shelfice_thermodynamics
535      - add more sophisticated thermodynamics of Hellmer (1989), this is
536        now the default
537      - give a few constants more intuitive names
538    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
539      if bulk formulae are used in long integration (especially EmPmR). Turn
540      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
541      if balancePrintMean, the imbalance that is substracted is printed to
542      STDOUT.
543    o fix bug (typo) in obcs_apply_eta.F
544    o add a new package shelfice which enables us to model the circulation
545      underneath shelf-ice with draughts of hundreds of meters.
546     - works
547     - to do: + include improved thermodynamics
548              + check whether kSurfC (from model/inc/SURFACE.h) can be used
549                instead of new field kTopC
550              + can we use topoFile, Ro_surf and existing code in ini_depth.F
551                instead of new field R_shelfIce and new code in ini_depth.F
552                and ini_mask_etc.F?
553              + adjust vertical mixing schemes?
554    o seaice pkg:
555     - add a cpp-flag to include a simple formula for a salinity dependent
556       freezing point of sea water at the surface
557     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
558       meridional stresses are now different (and hopefully correct)
559    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
560       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
561       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
562    o pkg/diagnostics: add options and parameters for regional-statistics
563       diagnostics ; define regions by reading a region-mask from a file
564       (might add other options later)
565    o pkg/bulk_force:
566     - add option and parameters to use AIM surface-flux formulae.
567     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
568       others forcing fields (defined in PARM05, parameter file "data") are loaded
569       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
570     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
571     - use the right EXCH call for uwind,vwind (to work on CS-grid).
572     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
573       and parameters (note: calcWindStress replaces .NOT.readwindstress).
574     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
575    
576    checkpoint58
577    o add "--embed-source" option to genmake2 which, when the supporting
578      tools can be compiled (as determined by genmake2) will turn on the
579      embed_files package which then embeds the entire MITgcm source code
580      (*.[fFhc] + Makefile) used for the build within the executable
581      - requested by CNH but off by default
582      - adds a paltry <9MB to the mitgcmuv executable in most cases
583      - only writes the output when useEMBEDSRC in eedata is true
584    o clean up 3-dim. relaxation codes:
585      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
586      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
587      * Thanks to Tom Haine for testing!
588    
589    checkpoint57z_post
590    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
591      affects output (@ truncation level) of exp. plume_on_slope ; updated.
592    o fix the pickup behavior for obcs in combination with ptracers
593    o fix a bug in ptracers_external_fields_load
594    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
595      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
596    o transfered surface NH pressure to eta field (if exactConserv).
597    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
598         and update lab_sea output.txt file.
599    o completing 3-dim. relaxation code: additional term
600         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
601      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
602      * At compile time, in "EXF_OPTIONS.h" set
603          #define  ALLOW_CLIMTEMP_RELAXATION
604          #define  ALLOW_CLIMSALT_RELAXATION
605      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
606          tauThetaClimRelax3Dim = 15552000.0,
607          tauSaltClimRelax3Dim  = 15552000.0,
608      * 3 cases:
609          1) Use a constant-in-time 3-dim. field
610          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
611          3) Real-time relax. to time-evolving prescribed field
612    o Adding Laplacian-type smoothness constraint on
613      initial and boundary (forcing) controls (ic, bc)
614      * enable at compile-time via
615        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
616      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
617      * Absolute scale somewhat unclear so far
618      * no area weighting was included since no other cost term does so far
619    
620    checkpoint57y_post
621    First step for a NLFS adjoint
622    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
623    o new init. routines for calc_r_star, calc_surf_dr
624    o still need to deal with ini_masks_etc
625    o testreport seemed happy
626    checkpoint57y_pre
627    
628    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
629    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
630    o add new offset feature to offline pkg (plus minor cleanup)
631    o cfc fixes for final year of integration
632    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
633      be in GCHEM_OPTIONS).
634    
635    checkpoint57x_post
636    o fix testreport Pb in multiple test experiment.
637    o cleanup our namelist syntax in verification:
638      - make it more F95 standards compliant (some work still needed)
639      - allows the vast majority of our tests to work with gfortran
640    o Non-Hydrostatic:
641     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
642     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
643    o Allow to apply AB on T,S rather than on AB(gT,gS):
644     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
645     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
646       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
647     - need a "clever" read_pickup to restart from the other AB formulation
648    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
649    o remove some unused variables (reduces number of compiler warnings)
650    o adjoint
651      * Disable useVariableViscosity for adjoint for time being
652        (there are a number of extensive recomputations)
653      * Initialize certain variables needed for adjoint
654    
655    checkpoint57w_post
656    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
657                 fix the singleCpuIO RS version of MDSWRITEFIELD
658       and add a WARNING if using globalFiles=T with multi-processors.
659    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
660      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
661    o tracer advection scheme:
662      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
663       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
664       was not very convenient).
665      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
666       (further tests needed for the implicit DST & Flux-Limiter schemes).
667    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
668      and sRef for convenience, handy, when you want to initialize
669      ptracers in a large domain with a constant non-zero value. Also,
670      untangle ptracers_init.F a little.
671    
672    checkpoint57v_post
673    o change dome exp. to use variable viscosity in side-drag terms.
674    o remove all the files from the cfc_offline test since they are now
675      incorporated into tutorial_cfc_offline which has been producing
676      identical results for a few days of testing
677    o add new parameter: sideDragFactor to enable half-slip-side BC
678      and change side-drag S/R to use viscosity from mom_calc_visc
679      (can switch back by setting sideDragFactor=0.); affects results at
680      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
681       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
682    o vorticity & strain are now computed without masking, to account for
683      no-slip-side BC in variable viscosity calculation ; mask is applied
684      anyway later on, before computing advection/coriolis terms.
685    o modify exp4 to test new obcs support for reading from external files
686      and for passive tracers
687    o fix behavior of ptracers_monitor when monitor output is written to a
688      netcdf-file; still not independent of monitor.F (writes in the same
689      file).
690    o change default value of tRef (put a uniform, meaningful value for ocean
691      & atmos) and initialize sRef (was missing, as Martin mentioned).
692    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
693      to be proportional to enstrophy dissipation length.  Thus,
694       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
695      This is now consistent with Smagorinsky and with the manual.
696    
697    checkpoint57u_post
698    o OBCS and PTRACERS: add open boundary support for passive tracers
699      - either use homogenous (pseudo) v.Neumann conditions or prescribe
700        OB-values from file; this is not different from the way theta and salinity
701        are treated
702      - however, Orlanski-radiation conditions are not supported, and the model
703        will stop if you use pTracers and Orlanski at the same time.
704      - beefed up the rountine obcs_external_fields_load: now only those open
705        boundary values are overwritten with values from files for which there
706        are really files, otherwise the OB-fields remain untouched. This makes
707        it possible to use different OBs at different ends of the domain (as
708        with EXF)
709    o reduce number of exch calls in shap_filt (s2).
710    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
711      truncation level) 4/5 MLAdjust test results (11&12 digits match).
712    
713    checkpoint57t_post
714    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
715    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
716      same truncation, independent of the face number: affects affects several
717      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
718    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
719      note that biharmonic viscosity + no-slip was not tested in any experiment.
720    o fix bug in non-linear free-surf side-drag ; generate new output for
721      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
722    o make mnc honor the writeBinaryPrec flag for most kinds of output
723    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
724    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
725      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
726    o add brackets in multi-terms sum to get same truncation, independent of
727      the face number (manage to get exactly same value of gU,gV at the cs-edge)
728      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
729    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
730      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
731      a maximum grid-scale Reynolds number.  Also, changes all length calculations
732      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
733      Suggested values of viscosity parameters found in mom_calc_visc.
734      Many new viscosity diagnostics available.
735    
736    checkpoint57s_post
737    o Add clearing-house for viscosity calculations, mom_calc_visc and
738      correct numerous bugs in LeithD and Smagorinsky discretizations.  
739      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
740      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
741      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
742      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
743      The Strain-Tension form is now called with useStrainTensonVisc=.true.
744      ViscAhStrain and viscAhTension are now retired.
745    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
746    o In response to JMC's bug report, genmake2 now ignores any soft-links
747      that it finds in the *current* directory when searching for files.
748      Soft-links found in any other source directories will still work as
749      they did before.
750    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
751      a C routine to unlimit the stack size
752    o mnc-ify pkg/aim snapshot vars
753    o mnc-ify pkg/land as requested by Daniel
754    o various changes to mnc including:
755      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
756      - output can now be grouped so that all files within a group
757          change the ITER portion of their names in lock-step together
758      - can now read ("global") PER-FACE (in addition to PER-TILE) files
759          and works with both EXCH1 and EXCH2 (but needs more testing)
760      - writing works for all verification test cases w/ g77 on Linux
761    
762    checkpoint57r_post
763    o make MNC variable initialization happen earlier
764    o add diagnostics for (almost) each term of the momentum Eq.
765    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
766    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
767    o remove MINIMAL_TAVE_OUTPUT option ;
768      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
769    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
770      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
771    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
772    o add time-dependent SST, SSS control
773    o cost terms in ecco/ modularized (new cost_generic.F)
774    o cost_averages routines are modularized (new cost_averagesgeneric.F)
775    o new infrastructure for seaice model vs. obs misfits in seaice/
776      * driver from the_main_loop.F is seaice_cost_driver.F
777      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
778      * gradient check in Exp. 6a of natl_box_adjoint/
779    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
780      (see README file)
781    
782    checkpoint57q_post
783    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
784    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
785      - bug was reported by Jean-Michel and Ian Fenty
786    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
787      update exp. cpl_aim+ocn output.
788    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
789      Needed for high-res. runs with large global files
790      to be able to limit tapelev size
791    o Changed some tests for adjoint:
792      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
793      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
794      * global_ocean.90x40x15/ back to default 3-level checkpointing
795    o Modifications to enable scripted COMMON to MODULE conversion
796      * verification/OpenAD/code/ has necessary scripts and description;
797      * converts, compiles and runs successfully;
798    
799    checkpoint57p_post
800    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
801    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
802      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
803    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
804    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
805      (was already the case for dissipation with mom_vecinv,
806       and also the case for grad.PhiHyd when staggered-timeStep)
807      This will allow to put dissipation out-off the AB time-stepping.
808     Unfortunately, affects truncation error. Update output of exp. that "fails"
809      (cg2d matching number) and leave the others for later: front_relax(10),
810      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
811      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
812    
813    checkpoint57o_post
814    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
815      (2) its ready to be documented during the 20050801 DocFest
816    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
817      for ideal_2D_oce and lab_sea on linux_ia32_g77
818    o set to #undef CTRL_SET_OLD_MAXCVARS_30
819      in global1x1_tot/code_seaice_adj to access indices 32, 33
820      (worth another tag)
821    
822    checkpoint57n_post
823    o adding precip control xx_precip 32
824    o adding swflux control xx_swflux 33
825    o Replacing 10 forcing penalty cost routines by 1 generic.
826    o Implementing partitioning in time-mean and variable adjustment
827      for atmos. state.
828    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
829    o in natl_box_adjoint:
830      * updated exp 1 to 10
831        (but does not have time-mean vs. variable split results yet)
832    o updated global1x1/*_seaice_adj/
833      to incorporate latest changes
834    o enable useSingleCpuIO for mdsio vector routines
835      (applies in particular to tapelev I/O)
836    o removed inefficient K-loop in all active_file*control*.F
837    
838    checkpoint57m_post
839    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
840      and advect_cs (use EXCH-2 and standard cs-32 grid files).
841    o pkg/exch2: filling of face-corner halo regions is optional
842      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
843    
844    checkpoint57l_post
845     tag before updating tutorials (pre-release-2)
846    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
847       for output and interpolation of input fields onto model grid)
848    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
849       Affects results of exp. rotating_tank ; update output.txt.
850    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
851          and taking the square quantity and/or using a fraction-weight field.
852    o fix aim_diagnostics_init.F mate numbers.
853    o add mnc output capability to diagnostics/diagstat and update
854      our cvsignore files for the ACSII output generated
855    
856    checkpoint57k_post
857    o lab_sea now uses diagnostics package and provides a suite of
858      new EXF diagnostics output.
859    
860    checkpoint57j_post
861    o exf
862      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
863        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
864        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
865      * extended diagnostics output
866        - now includes all EXF variables
867        - hs, hl moved to common block
868        - separate S/R for diagnostics, called after ctrl vector is added
869        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
870        - EXFqnet contains true Qnet (i.e. includes qsw)
871      * updated verif. lab_sea, global_with_exf
872      * Rearranging hflux (exf_mapfields -> exf_getforcing)
873        to ensure that diagnostics sees a true EXFqnet
874    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
875    o diagnostics pkg: change pointers so that 1 diagnostic can be used
876      several times with different frequencies.
877    o mnc-ify the thsice package as requested by Daniel Enderton
878      - the monitor--MNC output needs work
879      - many attributes need to be added (most are currently blank)
880    o mnc-ify theaim_v23 package as requested by Daniel Enderton
881      - many attributes need to be added (most are currently blank)
882    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
883    o add Sadourny like discretization to the 4th.O vorticity advection scheme
884    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
885      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
886         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
887    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
888     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
889    
890    checkpoint57i_post
891    o Diagnostics package was changed: diagnostic allocation is now deactivated
892      by setting an empty file name in the namelist (used to be by setting 0 frequency)
893    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
894      add 1rst Order upwind vertical Shear.
895    o add a quick fix for A/B checkpointing in OFFLINE mode
896    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
897      end-run around the C/Fortran linking horror in eesup/src/timers.F
898    o added pkg/runclock: allows user to terminate run based on wall clock
899    o added non-hydrostatic scaling parameter: nh_am2
900    o pkg/my82: futile attempt to make results compiler-independent by adding
901      some "_d 0", etc. no effect.
902    o for mnc output, fill the 'T' coordinate var with myTime and create a
903      separate 'iter' variable for iteration count
904    o pkg/diagnostics:
905      add new capability: output of Global/Regional & per-level statistics ;
906      tested against monitor output (including land & thSIce) on various exp.
907    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
908    
909    checkpoint57h_done
910      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
911      data.diagnostics, data.gchem, data.ptracers) is done.
912    
913    o pkg/diagnostics: prepare for Global/Regional statistics.
914      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
915    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
916      and rename it: DIFFERENT_MULTIPLE
917    
918    checkpoint57h_post
919    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
920    o pkg/diagnostics: change output frequency, now in seconds (instead
921      of Nb of iterations). This requires to change data.diagnostics.
922    checkpoint57h_pre
923    
924    o in mnc, let the user create the output dir if both mnc_outdir_date
925      and mnc_outdir_num are false
926    o add fflags() to pkg/diagnostics which allows one to specify, on a
927      per-file basis, the file precision [default behavior is unchanged]
928    o added diagnostics to pkg/kpp, including computation of mixed layer
929      depth based on a temperature/density criterion
930    o updated verification/natl_box to test the new pkg/kpp diagnostics
931    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
932    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
933    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
934      not mnc -- this mistake was found by JMC and is now corrected
935    
936    checkpoint57g_post
937    o add Adams-Bashforth 3rd Order time stepping:
938      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
939      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
940    checkpoint57g_pre
941    
942    o make lambda[Theta,Salt]ClimRelax spatially varying
943      (default remains spatially uniform constant based on tau)
944    o added new control variables
945      * init. uVel, vVel, etanN
946      * lambda[Theta,Salt]ClimRelax
947    o separate masks used for ctrl_pack/unpack 'from write_grid' output
948      (suggested by G. Forget)
949    
950    checkpoint57f_post
951    o add parameter "baseTime" = model base time = time at iteration zero
952      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
953      account for baseTime shift
954    o move Coriolis arrays from PARAMS.h to GRID.h
955    checkpoint57f_pre
956    
957    o mnc-ifying the seaice package
958    o introduced an alternative length scale calculation for use in the limiting
959      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
960    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
961    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
962      as well as grad(vort3).  Made it compatible with both approximate form
963      for the cubed sphere and full form of these gradients.  Added flag
964      useFullLeith to select between approximate and full form.  
965    o add "d0" in getcon.F to reduce differences between compilers/platforms
966      update output.txt of exp. fizhi-gridalt-hs
967    o change port_rand funtion to allow to set the seed.
968    o fix obscure MNC bug involving conversion between reals and integers
969      - it caused no problems with certain (eg. gcc, ifc) compilers but the
970        new version is now more standards-compliant
971    o adjoint-related modifications
972      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
973      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
974      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
975    
976    checkpoint57e_post
977    o Adding eddy stress controls a la Ferreira et al.
978    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
979    
980    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
981      update output.txt of exp. fizhi-gridalt-hs
982    o add more "Z" dimensions and associated coordinate vars to MNC
983    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
984    o parameter calendarDumps: when set, approximate months (30-31 days) and years
985      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
986      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
987      months and years.  Requires pkg/cal.
988    o diagnostics: add pickup functionality
989      - off by default for backwards compatibility
990      - current version only uses MDSIO -- MNC will be added
991    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
992    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
993    
994    checkpoint57d_post
995    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
996    o modify verification/ideal_2D_oce so that it tests the creation of mnc
997      output from the diagnostics package
998    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
999    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1000      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1001    o add coordinate variables to the MNC output from the diagnostics package
1002    o change MNC-flags default value: true when useMNC=TRUE
1003    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1004      the ability (off by default) to read the grid information using MNC
1005    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1006    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1007    o do snap-shot diagnostics at the middle of the time-interval (instead of
1008      at the end).
1009    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1010      new test for AIM with thSIce + slab-ocean
1011    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1012    o move state variable diagnostics to the beginning of the time step ;
1013      (note: still needs some work specially for snap-shot diagnostics)
1014      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1015    
1016    checkpoint57c_post
1017    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1018    o generate new output.txt files on faulks with g77 & the new -ieee option
1019    checkpoint57c_pre
1020    
1021    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1022      update output.txt of exp. global_ocean.90x40x15
1023    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1024      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1025    o add saltFlux(+File) forcing capability with periodicExternalForcing
1026    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1027    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1028    o improvements for the MNC output from DIAGNOSTICS:
1029      - correct handling of the unlimitied dimension
1030      - all dims now have associated coordinate variables
1031      - variables located at U, V, and Corner ("Z") points are now written
1032        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1033        *all* data points are output
1034    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1035    o added pkg/seaice/seaice_monitor.F
1036    o mdsio_readfield.F can now read files visible only to master MPI process.
1037    o pkg/seaice: some test code for ice-modified ocean stress
1038    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1039      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1040      spurious negative numbers for precipitation and humidity.  Will cause
1041      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1042    o pkg/ctrl/
1043      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1044        May be enabled via doPackDiag
1045      *  introduce z-scaling of
1046         + gradient (doZscalePack) and
1047         + control (doZscaleUnpack)
1048    o pkg/mdsio/
1049      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1050      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1051    
1052    checkpoint57b_post
1053    o simplify options in diagnostics_fill arguments (remove weird combinations)
1054    o fix MNC coordinate variables so that they now contain per-face index
1055      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1056      general, EXCH2 grids are only aligned to a "local" coordinate system
1057    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1058    o Implement instantaneous output within pkg diagnostics:
1059      setting a negative frequency in data.diagnostics produces
1060     "snap-shot" output (as opposed to time-average if freq > 0)
1061    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1062      NOTE: change ptracer diagnostics name: use 2 characters to work with
1063            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1064    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1065      becomes the coordinate variable for the 'T' dimension
1066    o add CF-style coordinate variables to MNC
1067      - just a first cut:  numbers are meaningless on the cubesphere and
1068        missing along the T axis but otherwise it works!
1069    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1070    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1071    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1072      this is based directly on what the model compute, so that the content of
1073      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1074    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1075    o clean up build options files for SunOS, in particular
1076      - remove -traditional from xmakedepend
1077      - change -xarch=v9 to -xarch=native for f77
1078      - restore use of make (not gmake)
1079      - add CC=gcc if using g77
1080    o changes per discussion of AM, JMC, & EH3 today:
1081      - move redundant "grid" variables out of "state" -- in preparation of
1082        creating proper CF-style coordinate variables and in recognition
1083        that any/all grid variables can be easily copied (eg. w/NCO) from
1084        the grid files into any of the other NetCDF files
1085      - *always* output grid variables with MDSIO (this will eventually be
1086        changed)
1087      - output MNC grid file if useMNC is true
1088    o every instance of _END_MASTER() has been found and replaced with
1089      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1090      preprocessors
1091    o re-arrange diagnostics pkg initialisation:
1092     - allow each package to extend the available diagnostics list
1093     - add some checking and fix small problems (multi-threaded, ...)
1094     - new S/R diagnostics_fill (replace fill_diagnostics):
1095       look through the short list of active diag. (instead of the long list)
1096       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1097    
1098    checkpoint57a_post
1099    o this set of changes restores TAMC compatibility
1100      tested for global_ocean.90x40x15 adjoint on trough
1101      (what a pain)
1102    
1103    checkpoint57a_pre
1104    o some modifs in tools/build_options for sunos
1105    o call ctrl_pack for ctrl at end for optimcycle=0
1106    
1107    checkpoint57
1108    o add horizontal bi-harmonic viscosity for vertical velocity
1109      - new parameter viscA4W (defaults to viscA4)
1110      - affects only non-hydrostatic code
1111      - to be done: no-slip lateral boundary conditions
1112    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1113    o implement Implicit Vertical advection for pTracers
1114    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1115      (implemented also for implicit vertical diffusion & advection)
1116    o OBCS: extend application of tracer open boundary conditions
1117      to a strip beyond the boundary of width Olx/Oly
1118    o add call monitor to TAF set of required calls (flow directives)
1119      and include in natl_box_adjoint
1120    o untangle a few ifdefs related to cost, ctrl, autodiff
1121      untangel a few ALLOW_ECCO_OPTIMIZATION
1122    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1123      (theta2, salt2 in ecco_cost_weights)
1124    
1125    checkpoint56c_post
1126    o OBCS as control variables
1127      - update ctrl_ad_diff.list, obcs_ad_diff.list
1128      - remove balance of obcs controls from default
1129      - fix index bug nobcs in ctrl_init
1130      - fix dummy fields filen in ctrl_pack
1131      - add dummy weights for obcs
1132    o lsopt: comment out fort.94 output
1133    o optim:
1134      - remove unnecessary header files
1135      - adjusted namelists
1136      - add xerbla.F to Makefile
1137    o exf:
1138      - multiple modifications of exf_check_range
1139      - unit change in exf_init_runoff from [m/year] to [m/s]
1140    o mdsio:
1141      - i/o-vector change debugLevel from debLevA to debLevB
1142    
1143    checkpoint56b_post
1144    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1145      is called from DO_THE_MODEL_IO
1146      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1147      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1148      - clean up PTRACERS_WRITE_TIMEAVE a little
1149    o add another verification experiment that tests both the cfc-pkg and
1150      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1151      reactive tendencies treated inline with regular timestepping
1152    o testreport previously did a lousy job of comparing small numbers, so
1153      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1154      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1155      testreport.
1156    o ptracers_monitor: bug fix for MPI
1157    
1158    checkpoint56a_post
1159    o GCHEM: finish reorganizating the package
1160      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1161        (introduces another 3D-array for each passive tracer, but only if
1162        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1163        gchemTendency is not needed because the timestep is done separately)
1164      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1165      - GCHEM is now---more or less cleanly---separate from PTRACERS
1166      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1167        so clear to me how that should be done in a general way.
1168    o CFC: improve formatting of output in CFC_ATMOS
1169    o PTRACERS:
1170      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1171        that ALL experiments with ptracers enable can be checked. This makes
1172        GCHEM_MONITOR obsolete.
1173      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1174        monitorFreq
1175      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1176    o add PTRACERS (PTR0[1-5]) to testreport output
1177    o exf_check_range:
1178      * default changed to .TRUE.
1179      * will check values for niter0 if debLevA, every timestep if debLevB
1180      * STOP in exf_check_range if 'out of range'
1181      * range chosen generous to allow for potential extema
1182      TBD: a version with stricter range
1183           permitted range would be runtime parameters
1184    o GMredi:
1185      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1186      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1187      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1188    o GCHEM:
1189      - move call to GCHEM_FORCING_SEP, so that it is now called before
1190        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1191      - introduced a useGCHEM runtime flag and applied it everywhere.
1192      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1193        this flag is now only visible within GCHEM-pkg routines.
1194      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1195        be replaced by a 3D array that is computed before thermodynamics; for
1196        this, the tracer ID iTracer had to be included into the parameter list
1197        of ptracers_forcing
1198      - set up forward_step to call gchem_forcing, that will replace
1199        gchem_forcing_int in ptracers_forcing
1200      - cleaning up
1201    o small cleaning of exch2: remove files that are also in eesupp/src
1202    
1203    checkpoint56
1204    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1205    o mnc: cleanup "full" files--fixes out-of-memory problem
1206    o ECCO-GODAE
1207      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1208      * fully merged and updated from SIO code
1209        windstress sign change affects
1210        - exf_inscal_[u/v]stress
1211        - sign of xx_tau[u/v] adjustments
1212        - signs in cost_scat
1213      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1214      * natl_box_adjoint updated and compressed
1215      * 2-level checkpoint switch added
1216        (tested in EXP. 1 of natl_box_adjoint)
1217      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1218    o SVD
1219      * first complete, non-hacked version for SVD calculations
1220      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1221        performed via direct access files admtlm_vector.it????
1222        (via ctrl_[un]pack)
1223      * optimcycle is used for ARPACK iteration counter
1224        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1225      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1226        and add linear transforms where necessary
1227      * controls are initial/final SST, SSS (can be extended; need to check
1228        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1229    o mdsio: filename info to both stderr, stdout
1230    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1231      from sign change
1232    
1233    checkpoint55j_post
1234    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1235      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1236    o add consistent build directories and .cvsignore files to verification
1237    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1238    o make all subroutines 30 or less characters in length for certain older
1239      compilers to work (a thorough search only turns up two routines in
1240      pkg/ptracers)
1241    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1242      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1243    
1244    checkpoint55i_post
1245    o change arrays for total vertical diffusivity (2.D if explicit,
1246      3.D if implicit) ; each ptracer uses its own background value.
1247    o added mnc/NetCDF output capability to ocn_compon_interf
1248      - added bits to verification/cpl_aim+ocn so that it can run on
1249        ITRDA and other clusters without the mpirun "-wd" option
1250    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1251      configuration
1252    o give MNC the ability to create additional files rather than
1253      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1254      - the default is just less than 2GB which is a practical limit
1255        on many systems
1256    o Compute the non-local term using either KPP vertical diffusivity (=default)
1257       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1258    
1259    checkpoint55h_post
1260    o add verification test "vermix"
1261    o remove all the *_ioinc flags and replace with the single global
1262      outputTypesInclusive flag
1263    o allow to set a vertical profile of vertical diffusivity for T & S
1264    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1265    o useMNC moved from data.mnc to data.pkg
1266    
1267    checkpoint55g_post
1268    o Renaming carbon AD experiments to comply with testreport conventions
1269    o Updating adjoint of Held-Suarez hs94.1x64x5
1270    o Fixing directives for non-ECCO forward_step, after ECCO directives
1271      have been fixed to avoid recomp. of do_oceanic_phys
1272      Works well for global_ocean.90x40x15,
1273      but recomp. issue remains for carbon
1274    o Updating adjoint output for natl_box_adjoint after
1275      pkg/ecco has been modified (see taga c55d_post)
1276    
1277    checkpoint55f_post
1278    o rename to timeave_init_fixed
1279    
1280    checkpoint55e_post
1281    o some delicate re-shuffle of store directives to avoid one
1282      extra call of do_oceanic_physics
1283      affects ecco_the_main_loop.F, do_oceanic_physics.F
1284      checkpoint_lev1_directives.h
1285    o NB: this may break global_ocean adjoint temporarily,
1286      but it is clear how to fix it. Will do later, need this now.
1287    
1288    checkpoint55d_post
1289    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1290    o ecco_cost_weights is modified to 1x1 runs
1291    o modifs to allow observations to be read in as
1292      single file or yearly files
1293    o enable to read exf forcing fields as either
1294      single file or yearly files (flag useExfYearlyFields)
1295    checkpoint55d_pre
1296    
1297    o switch between 2-level and 3-level checkpointing
1298    o add ability of MNC to write local and "partial" (eg. 2D slices where
1299      the full 3D field is never actually stored) arrays to NetCDF files
1300      with the correct (that is, the complete multi-dimensional) set of
1301      array indicies
1302      - used in mom_vecinv() to write the diagFreq output
1303      - tested (demonstrated) in verification/aim.5l_cs
1304    o further mnc-ification
1305      - add verification/lab_sea to the list with mnc setups
1306      - fix undefined mnc v-names in cd_code
1307      - add kpp to mnc output (both snapshot and timeave)
1308    o non-hydrostatic code
1309      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1310        in calc_gw.F
1311      - defaults to viscAh
1312      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1313        friction or Leith) in non-hydrostatic mode, as long as there is
1314        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1315    o pkg/cost
1316      extend simple cost functions to treat time mean quantities
1317      (T,U,V) via cost_accumulate_state from cost_tile
1318    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1319        be 2 times larger than the minimum size the advection scheme requires.
1320        now get a perfect conservation of salt in advect_cs test-exp (updated)
1321    o GGL90 (Gaspar's TKE mixed layer)
1322      - add horizontal diffusion of TKE, requires exchanges in
1323        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1324        default. In OPA there is no horizontal diffusion of TKE but the
1325        mixing coefficients are computed from a horizontal average of TKE of
1326        6 points or so. I think that diffusion has a little more physical
1327        justification.
1328      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1329        was in vain)
1330      - mask tke-variable in ggl90_init
1331    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1332    o fix biharmonic diffusion on CS-grid.
1333    o more obcs stuff
1334      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1335        for reading boundary values. This routine is called from
1336        obcs_prescribe_read
1337      - updated obcs_check
1338      - changed sponge layer relaxation parameter units for days to seconds
1339      - turned off sponge layer by default
1340      - changed argument list of OBCS_CALC to myTime+deltaTclock
1341      - fixed about 35 bugs in obcs_external_fields_load
1342    
1343    checkpoint55c_post
1344    o obcs stuff
1345      - new runtime flags useOBCSprescribe, useOBCSbalance
1346      - re-arranged obcs_calc
1347      - moved exf_getobcs to obcs_prescibe_read
1348        obcs_prescibe_read is called after ORLANSKI stuff
1349        and independent of it (executable can contain all).
1350      - updated obcs_check
1351      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1352        These may be necessary only if tangential velocities are
1353        prescribed at OB, not sure, needs testing.
1354    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1355      which simplifies the calls and passes the ifc check-bounds test
1356    
1357    checkpoint55b_post
1358    o add a 2D scalar, Z location, exchange_2 routine.
1359    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1360      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1361      affects advect_cs results (for the wrong reason): update output.txt
1362    o use a more standard discretization for biharmonic viscosity ;
1363     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1364      affects results of dome set-up: update output.txt
1365    o fix gad_advection.F (CubedSphere part), back to version 1.23
1366    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1367    
1368    checkpoint55a_post
1369    o merged code to
1370      * prescribe/read time-dependent open boundaries
1371        (works in conjunction with exf, cal)
1372      * sponge layer code for open boundaries
1373      * each boundary N/S/E/W now has its own CPP option
1374        (healthy for the adjoint)
1375    
1376    checkpoint55
1377    o up-to-date adjoint of previous breaks
1378      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1379      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1380      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1381      - carbon: * remove tr1-related adjoint verification
1382                * add ptracer as control variable
1383    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1384      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1385    
1386    checkpoint54f_post
1387    o in verification/carbin/ remove experiment related to
1388      ALLOW_PASSIVE_TRACER (array tr1 etc)
1389      code_ad/ input_ad/ results_ad
1390    
1391    o add two new packages
1392      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1393        + subject to optimization (memory)
1394      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1395        + subject to reordering (many GOTOs in the original code)
1396        + so far opps is called for every (i,j) point, and then operates in
1397          the vertical; one may want to reorder the scheme in order operate in
1398          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1399          fields)
1400    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1401      - all verification tests compile and run with linux_ia32_g77
1402      - defaults are compatible with current input files--nothing
1403        should change if you were not previously using MNC
1404      - MNC output has been added in numerous places (eg. timeave)
1405        but there are still a few writes not yet do-able with MNC
1406        (this is in progress)
1407      - flags now allow for either/or/both use of MDSIO and MNC and
1408        documentation will soon follow
1409      - numerous small formatting cleanups for ProTeX
1410    o add version info (via BUILD_INFO.h) to MNC and stdout
1411    
1412    checkpoint54e_post
1413    o add two new packages
1414      - pp81 (Packanowski and Philander, 1981), Richardson number and
1415        stratification dependent mixing
1416      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1417      - these scheme operate in a similar manner as KPP (without ghat, of
1418        course), however there is only one diffusivity that is used for both
1419        temperature and salinity (and passive tracers)ç
1420    o add offline package
1421    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1422      provided by Stephanie Dutkiewicz
1423    o genmake2: add ability to search for C compilers and cleanup test output
1424      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1425    
1426    checkpoint54d_post
1427    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1428    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1429      leading to additional shift by 5 days each year of integration
1430       (i.e. leading to considerable offset over the years)
1431    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1432    o start with no AB and no initial filtering (staggerTimeStep):
1433      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1434    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1435      (external loading & cpl import/export stay in forward_step.F)
1436    o update coupling interface to work with new staggerTimeStep
1437    o change MDSIO ptracers_pickup.
1438    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1439    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1440    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1441    
1442    checkpoint54c_post
1443    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1444      this affects (truncation error) output.txt of test-exp:
1445       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1446    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1447    o change Qnet to always be the net heat flux, (+upward).
1448      affects (truncation error) output of natl_box exp.: updated
1449    o define the max number of passive tracers in PTRACERS_SIZE.h
1450    o start to test mnc routinely in exp0
1451    o add sea-ice loading (sIceLoad) as a new forcing field.
1452    
1453    checkpoint54b_post
1454    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1455       impressive on Altix and Opteron systems)
1456    o diagnostics can now write NetCDF files through the mnc package
1457    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1458    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1459    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1460      affects (truncation error) output of lab_sea & natl_box exp.: updated
1461    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1462    
1463    checkpoint54a_post
1464    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1465    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1466    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1467    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1468      + internal_wave (shift in writing cg2d_ini_res)
1469    checkpoint54a_pre
1470    
1471    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1472      - modified verification/lab_sea and natl_box_adjoint accordingly
1473    
1474    checkpoint54
1475    checkpoint53g_post
1476    o prepare splitting of thermodynamics: store convect.counter in common block
1477    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1478      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1479    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1480    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1481    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1482    o restore adjointability
1483    
1484    checkpoint53f_post
1485    o modifications that affect AIM experiment results (update output.txt):
1486      - no advection of S at top interface Nr (pkg/generic_advdiff)
1487      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1488    o AIM pkg:
1489      - include stability function into surf.Flux derivative relative to Tsurf
1490      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1491    
1492    checkpoint53e_post
1493    o merged cylindrical coord configuration
1494    o added rotating_tank experiment
1495    checkpoint53e_pre
1496    
1497    checkpoint53d_post
1498    o faulks upgraded: re-generate output.txt that have changed:
1499       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1500    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1501    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1502    o added Sadourny discretization of Coriolis
1503      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1504      - re-enabled use of omega3 (useAbsVorticity)
1505    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1506      vector-invariant equations
1507      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1508    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1509      hopefully without new bugs
1510      - still to do: biharmonic friction for non-hydrostatic w
1511    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1512    o regenerated output for global_ocean_ebm (using -ieee)
1513    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1514      of mom_common/
1515      - simple re-arrangement of instructions within computing loop
1516    checkpoint53d_pre
1517    
1518    checkpoint53c_post
1519    o new version of coupler for AIM+thSIce and Ocean models
1520     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1521     - land: change Evaporation of snow
1522     - aim with thSIce: fix bug in snow-precip.
1523    o changes to calc_gw.F
1524     - bug fix for w^2 term near the bottom boundary
1525     - (hopefully) improve the lateral slip boundary condtions for use with
1526        partial/looped cells
1527      - because the bug fix changes two verification experiments anyway (exp5
1528        and plume on slope), change the lateral boundary condition from half slip
1529        to the value of no_slip_sides
1530    o ebm package wasnt quite up to the parallel task. Fixed that.
1531    o Adjoint of EBM package + verification
1532      * TLM OK
1533      * ADM not sufficient accuracy yet (needs further testing)
1534    
1535    checkpoint53b_post
1536    o Commiting new energy balance model to repository
1537      * package is pkg/ebm
1538      * verif. is verification/global_ocean_ebm
1539      * references are in ebm_driver.F
1540    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1541    C        Global thermohaline circulation. Part I:
1542    C        Sensitivity to atmospheric moisture transport.
1543    C        J. Climate 12(1), 71-82
1544    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1545    C        Global thermohaline circulation. Part II:
1546    C        Sensitivity with interactive transport.
1547    C        J. Climate 12(1), 83-91
1548    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1549    C        Destabilization of the thermohaline circulation
1550    C        by atmospheric eddy transports.
1551    C        J. Climate 7(12), 1870-1882
1552    o Will need long integration testing.
1553    checkpoint53b_pre
1554    
1555    o created pkg/mom_common in preparation for variable viscosity code
1556    o renamed and split ini_mnc_io
1557    o pkg/land: only liquid water can diffuse or run-off
1558    o AIM using land: soil wetness availability account for snow
1559    o added printMapIncludesZeros to EEPARMS namelist
1560    
1561    checkpoint53a_post
1562    o restore TAMC compatiility for exf_constants.h
1563      (no usage of _d in .h)
1564    o Additional storing in KPP in an attempt to fix
1565      TAMC problem with adjoint of KPP code.
1566      (no success...)
1567      Identical code works fine with TAF.
1568    o Fixed verification/natl_box_adjoint experiments.
1569      Initial conditions for Experiments 4 and 5 are now
1570      set to "SEAICE_initialHEFF=0", which is more reasonable,
1571      and hence gives results closer to that of Experiment 2.
1572      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1573    
1574    checkpoint53
1575    o stable checkpoint with up to date adjoint
1576      TLM tests only run for 1st grdchk at the moment. Its unclear if
1577      this is a code problem or a problem with resetting code for g_
1578      variables that is being autogenerated wrong.
1579      Otherwise:
1580       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1581       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1582         are both still in chaos following their security messes.
1583    
1584    checkpoint52n_post
1585    o various build (mostly genmake2) changes including:
1586      - ability to build/run more easily within Cygwin and MacOS X
1587      - more complicated Makefiles with a stronger dependence on Gnu Make
1588    o pkg/seaice modifications
1589      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1590        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1591        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1592      - changed proxy for geostrophic velocity and updated
1593        verification/lab_sea/results/* accordingly
1594      - removed ADI dynamic solver from pkg/seaice
1595      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1596        they caused a segmentation fault under certain circumstances
1597      - removed unused field WATR
1598    o bug fix in exf-package:
1599      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1600         now reflect that.
1601    o small fixes in the cal-package:
1602      - set reference date to first of January for the 'model'-calendar
1603      - failing of cal_CheckDate in cal_FullDate now actually results in a
1604        warning
1605    o small modifications in exf-package to increase flexibility:
1606      - change climtempfreeze from a constant to a runtime parameter that
1607        is specified in data.exf_clim (default = -1.9)
1608      - introduce runtime parameter windstressmax (default = 2.0) that is
1609        specified in data.exf
1610    o fix in pkg/thsice:
1611      - update Evap (Tsf changes) to be consistent with Latent heat flux
1612      - maintain snow precipitation unchanged (even if Tsf >=0).
1613     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1614    
1615    checkpoint52m_post
1616    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1617      this does not change any of the results, because myIter=0 in swfrac always
1618      lead to jwtype=2 (the default anyway), but the call makes little sense
1619      as a default
1620    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1621    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1622      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1623    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1624    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1625    o extending useSingleCpuIO option to work with new exch2 I/O format
1626      - old-style, missing-tile I/O is still accessible by defining CPP
1627        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1628    o monitor package can write to NetCDF files and/or STDOUT
1629    o fix re-definition bug in MNC_GRID_INIT_ALL()
1630    o doc/api_reference added
1631      - a framework for building an API Reference Manual using all
1632        the "protex" comments embedded in the code
1633      - see pkg/generic_advdiff, pkg/mnc for examples
1634    o MNC:
1635      - make myThid the last argument for all subroutines
1636      - new default for the grid files: NO halos
1637      - add useMNC and other run-time flags
1638      - separate per-file-group handling of the unlimited dimension
1639      - early initialization of MNC w/ flags read at the eeboot stage
1640        and lookup tables set in initialize_fixed
1641      - write all MNC output to a freshly-created directory
1642    o thermodynamics sea-ice (thsice) is now tested with testreport.
1643    o test exp. advect_cs: use the standard cs32 grid ; update output.
1644    o Added functionality to grdchk:
1645      pick global i,j,k position (or nearest wet) where to perform check.
1646    
1647    checkpoint52l_post
1648    o new land formulation:
1649      a) use ground enthalpy as prognostic variable to ensure exact
1650         energy conservation.
1651      b) account for water temperature and for latent heat of freezing
1652         in all processes (rain, run-off, ground storage)
1653      c) compute surface and ground temperature implicitly.
1654    o aim_v23 modification for new land model:
1655      a) Treat separately land / ocean / sea-ice surface fluxes
1656         to allow implicit computation of land & sea-ice surface temp.
1657      b) add snow precipitation.
1658    checkpoint52l_pre
1659    
1660    o fix problem (when 1 tile is empty) in min/max monitor.
1661    o fix bug in timeAve (u,vZetatave in common block)
1662    o no restoring terms under ice for pkg/seaice
1663    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1664    o bug fix for pkg/seaice pickups
1665    o change MNC call locations and add coordinate attributes
1666    o mask vorticity at the corner ; affects global_ocean.cs output
1667    o fix ini_curvilinear_grid ; test CS experiments with mpi
1668    o aim.5l_cs: modify sea-ice fraction input file ; update output
1669    o exf: Adding simple range check routine for exf fields after read
1670    
1671    checkpoint52k_post
1672    o removed top-level directory "diags"
1673      - we migrated these functions to pkg/timeave a long time ago
1674    o fixed bug introduced in pkg/monitor
1675    o accuracy ctrlprec = 32 insuffient for gradient checks using
1676      averaged fields (I/O via cost_averages)
1677      -> use ctrl.h in active_file*.F to control I/O precision.
1678    o paramter list of CALL ADTHE_MAIN_LOOP
1679    o added initial do_the_model_io to ecco
1680    o set all ...Freq to zero after cost_final
1681      taveFreq, dumpFreq, pChkptFreq
1682    o MAIN and ECCO differentiability restored
1683    
1684    checkpoint52j_post
1685    o fix nchklev in tamc.h for global_ocean...
1686    o Bringing flow and store directives up-to-date
1687    o Really weird thing!
1688      call do_the_model_io from the_main_loop with parameters
1689      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1690      TAF places a faulty re-call of initialise_varia
1691      after cost_final call which should not be there!
1692    checkpoint52j_pre
1693    
1694    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1695      error messages
1696    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1697    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1698      debug output
1699    o modfied mdsio_writefield.F to handle non-global files under exch2
1700    o update AIM Cubed-Sphere exp (aim.5l_cs):
1701      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1702    o update AIM Equatorial Channel exp:
1703      use standard aim_v23 pkg and change the SST fields to be more realistic.
1704    o globalFile now works with exch2
1705    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1706      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1707    o limit timeave output for hi-res integrations
1708    
1709    checkpoint52i_post
1710    o removed CPP_EEOPTIONS.h from verification/*/code
1711    o updated the tiling for global_ocean_pressure
1712    checkpoint52i_pre
1713    
1714    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1715      the old pkg/aim).
1716    
1717    checkpoint52h_pre
1718    o shortened offending lines in exch2_send_rx?.template
1719    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1720    o genmake2: add build & execute test for NetCDF code
1721    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1722      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1723    o added useSingleCPUIO flag to monitor.F and mon_out.F
1724    o added temporary hack for sea-ice dynamics on the cube:
1725      metric terms are ignored and it is assumed that
1726      there is no sea-ice on cube faces 1, 2, 4, and 5.
1727    
1728    checkpoint52f_post
1729    o added exch2 cube routines to pkg/exch2
1730    o modified hs94.cs-32x32x5 to use it
1731    o added new grid files to hs94.cs-32x32x5
1732    checkpoint52f_pre
1733    
1734    checkpoint52e_post
1735    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1736      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1737    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1738      to work with implicit vertical advection and AB ;
1739    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1740    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1741     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1742    checkpoint52e_pre
1743    
1744    o fix bug in impldiff when Nr=1 or Nr=2.
1745    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1746    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1747    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1748      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1749    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1750    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1751    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1752    
1753    checkpoint52d_post
1754    o re-tiled many expts to allow comparison in multi-processor mode
1755      - updated output accordingly
1756      - changed hs94.128x64x5 to use intial T from file rather than use the
1757        random number generator
1758    o add infrastructure in model routines for fizhi and gridalt packages
1759    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1760    o changes to permit hi-res, cubed-sphere, configuration
1761      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1762      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1763      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1764        of surface winds for the cube
1765      (A verification experiment, based on global_ocean.cs32x15, but with
1766       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1767       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1768       complete with example surface forcing files and matlab scripts to look
1769       at the output and compare it with that of global_ocean.cs32x15.)
1770    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1771       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1772       to conform to the common rule.
1773    o check-in the first version of the coupler + interfaces for multi-components
1774       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1775       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1776       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1777       - ocean and atmos. share the same horizontal grid (no interpolation).
1778       - exchanges between component and coupler is done in forward_step
1779    o new verification experiment, cpl_aim+ocn:
1780       coupled ocean - AIM atmosphere on cs32 grid.
1781    
1782    checkpoint52d_pre
1783    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1784    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1785    
1786    checkpoint52c_post
1787    o Fixing OPTIONS files for use of exf:
1788      - ALLOW_ECCO not needed
1789      - ECCO_CPPOPTIONS.h should not be included from
1790        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1791        as has been the case in the past
1792      - All cal/exf related options are currently set in
1793        single header file. Should remain so until we
1794        agree on a consistent new policy.
1795    o Removed all CPP options for cal package.
1796      cal has no more CPP options.
1797    o modified STOREs in GAD_ADVECTION
1798    o corrected key comp. for passkey
1799    
1800    checkpoint52b_post
1801    o new version: "thsice" of thermodynamic sea-ice pkg:
1802     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1803     - modify fluxes but do not change theta directly;
1804     - light cleaning of bulk_force pkg (still needed with thsice).
1805     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1806       + output_thsice.txt to test thsice & bulk_force pkgs.
1807    o put back grid & coriolis monitor output.
1808    checkpoint52b_pre
1809    
1810    o call "do_the_model_io" at the beginning (=> dump initial state)
1811    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1812    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1813      (need info on NUMBER_OF_PTRACERS)
1814    o missing PTRACERS headers in some routines
1815    o default tamc.h in pkg/autodiff supposed to crash
1816      to ensure proper customization
1817    
1818    checkpoint52a_post
1819    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1820      - moved surfaceTendencyTice from pkg/seaice to main code
1821      - subroutine FREEZE_SURFACE now limits only surface temperature
1822        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1823        => new output.txt for global_ocean.cs32x15 & global_with_exf
1824      - keep the old version of FREEZE for backward compatibility;
1825        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1826      - corresponding modifs for TAF directives
1827    o added surface flux output variables to TIMEAVE_STATVARS
1828    o time-averaged output for pkg/ptracers
1829    o fix problem with ECCO-related divided adjoint
1830      snapshot file was missing some ad-variables,
1831      but no warning issued by TAF
1832    
1833    checkpoint52a_pre
1834    o some bug fixes for #undef REAL4_IS_SLOW
1835    
1836    checkpoint52 = ecco_c52_e35
1837    o after testing adjoints of checkpoint51u_post
1838    
1839    checkpoint51u_post
1840    o this is the post-merge tag of the ecco-branch
1841      (needs another clean checkout and re-testing)
1842    o various natl_box_adjoint configs and results
1843      but no input fields
1844    o obcs adjoint not yet merged!
1845    o adding ECCO global 1x1 and 2x2 degree configs
1846    o updated/extended some store directives for seaice
1847    o pkg/ecco now containes ecco-specific part of cost function
1848    o top level routines the_main_loop, forward_step
1849      supersede those in model/src/
1850      previous input data.cost now in data.ecco
1851      (new namelist ecco_cost_nml)
1852    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1853    
1854    checkpoint51t_post
1855    o this is the pre-merge tag of the ecco-branch
1856    
1857    checkpoint51s_post
1858    o cleanup: removed various obsolete #define-s
1859    o pkg/grdchk
1860      - renamed 'ph-grd 3' to 'grad-res'
1861      - merged from ecco-branch
1862        (remaining bug fixes for obcs gradient checks)
1863      - additional high-precision output for testreport
1864        (grep for 'precision_grdchk_result')
1865    
1866    checkpoint51r_post
1867    o cleaned up or removed CPP_OPTIONS.h files
1868    o updated results for some of the tests to reflect the new
1869      optfiles (-ieee: -O0 instead of -O3)
1870    
1871    checkpoint51q_post
1872    o cd_code:
1873      - moved cd_scheme.F -> cd_code_scheme.F
1874      - separate read_checkpoint from cd_code_ini_vars.F
1875      - separated cd_code part from write_checkpoint
1876      - updated AD_SOURCE, generated .flow
1877      - added CD_CODE_VARS.h to the_main_loop
1878      - Moving cd_code specific store dir.s to pkg/cd_code
1879    o ctrl package totally restructured
1880      - pack/unpack now optional and decoupled from
1881        xx_/adxx_ I/O
1882      - ctrl_pack/unpack cleaned
1883        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1884      - confined inclusion of AD_CONFIG.h to where necessary.
1885    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1886    
1887    checkpoint51p_post
1888    o create initial cd_code package
1889      - WARNING: the initialization of fields within packages
1890        is broken because INI_FIELDS (where READ_CHECKPOINT is
1891        called) is called *before* PACKAGES_INIT_VARIABLES.
1892        This seems to be backwards since
1893        1) its important to initially zero the entire field including
1894           the "halo" region
1895        2) zeroing needs to be done *before* reading pickup info
1896           and the pickup call might or might not happen in any
1897           particular run
1898      - this needs an overhaul for R2
1899    o cleanup verification/*/code/GMREDI_OPTIONS.h
1900    o cleanup testreport
1901    
1902    checkpoint51o_post
1903    o bringing AD-related verif's up to date with genmake2
1904      - carbon/
1905      - global_ocean.90x40x15/
1906      - hs.94.1x64x5/
1907      - (front_relax/ )
1908    o (more) consistent directory structure for AD-related verif.'s
1909    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1910    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1911    o bug fix in find_alpha.F for MDJWF:
1912      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1913        change rho -> rho-rhoConst
1914      - replace call find_rho to find_rhonum
1915    o initialisation of rFlx extended to full array (required by TAF)
1916      and shifted to thermodynamics
1917    o removed PTRACERS.h in ptracers routine
1918    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1919    o Correcting initialisations for fVerU, fVerV.
1920    o helping TAF to recognize dependency on kUp for
1921      fVerU, fVerV
1922    o Replacing delZ by delR in pkg/ctrl/
1923    checkpoint51o_pre
1924    
1925    o undid all of cp51 pending some cleanups and discussion
1926    o added the [#include "AD_CONFIG.h"] statement to all files that need
1927       it for adjoint/tl #defines
1928     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1929     o removed tools/genmake since it no longer works
1930    
1931  checkpoint51n_post  checkpoint51n_post
1932  o modifications to make FREEZE flux visible to pkg/kpp  o modifications to make FREEZE flux visible to pkg/kpp

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