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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.786 by dimitri, Sat Apr 14 18:32:32 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 Added capability for latitudinal dependence of Bryan and Lewis, 1979
8      vertical diffusivity, similar to that in MOM4; turned on using
9      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
10      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
11    o Added capability for 3D specification of background vertical diffusion
12      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
13      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
14      "data" file that contains the 3D vertical diffusivity coefficients.
15    o ice dynamics (pkg/seaice) with thsice thermodynamics:
16      - add code within pkg thsice to advect & diffuse sea-ice fields
17      similar to (and will replace) what has been added in  seaice_advdiff.F,
18      but: - conserving Mass, Heat & Salt.
19           - better when using non-linear advection scheme (not yet fully tested)
20           - can also be used in atmospheric set-up (for now, only the diffusion).
21    
22    checkpoint58x_post
23    o IO option for global-file compact format:
24      - add options when generating topology (utils/exch2/matlab-topology-generator)
25      - add I/O capability (pkg/mdsio).
26      - adapt utils/matlab/rdmds.m to read this format.
27      for now long-line format not yet supported by pkg/mdsio (& exch2).
28    o shelfice: add a few diagnostics
29    
30    checkpoint58w_post
31    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
32      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
33      (and replace horiVertRatio in NH code).
34      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
35                         and tutorial_plume_on_slope (sensitive to truncation)
36    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
37      directly to drive seaice model (C-grid only)
38    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
39     - reintroduce computation of wind from stress,
40     - compute tau (in exf_bulkformulae.F) from windstress averaged to
41       mass points to avoid tau = 0
42     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
43    o rdmnc.m: make it work with "global" files created with gluemnc
44    o rdmnc.m : some improvements in dealing with singleton dimension
45      (tested on all testreport mnc output files).
46    o genmake2: disable pkg/profiles if netcdf test fails.
47    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
48    o move call to cal_readparms up to make calendar parameters/variable available
49      to all packages
50    
51    checkpoint58v_post
52    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
53      useDynP_inEos_Zc tested.
54    o pkg/exf: changes to properly interpolate/mask/scale initial fields
55    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
56      and portions thereof.  See read_cs.txt for description and examples.
57    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
58      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
59      following the great-circle arc between those 2 points.
60    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
61      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
62    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
63     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
64     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
65     - still needs work (not working with some options ; efficiency to improve)
66       and serious testing.
67     - use this scheme for temperature & salinity in 2 advection test exp.:
68       advect_xy & advect_xz, respectively.
69    
70    checkpoint58u_post
71    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
72    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
73    o testreport: add option "-skipdir" to skip some test.
74    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
75      momentum calculation.
76    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
77    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
78      remove checkpoint.F and the_correction_step.F (no longer used);
79      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
80    o add option (linFSConserveTr) to correct for tracer source/sink due to
81      Linear Free surface
82    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
83    o pkg/thsice: fix reading mnc-pickups
84    
85    checkpoint58t_post
86    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
87    o pkg/mdsio:
88     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
89       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
90       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
91     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
92     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
93       either MDS_READ_FIELD or MDS_WRITE_FIELD )
94     - new S/R (to replace MDSWRITEMETA), which allows to write more
95       informations (variable names, time ...) to meta files.
96     - modify rdmds.m to give back the meta file content.
97    o pkg/diagnostics: change vertical interpolation to be safer, and more
98       flexible (define p-levels to interpolate to in data.diagnostics);
99      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
100       diagnostic pointer.
101    o pkg/seaice: more cleaning up of seaice_growth, added many comments
102    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
103    o fix multi-category seaice:
104     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
105       SEAICE_MULTICATEGORY
106     - fix short wave heat flux
107    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
108       and allow to use EVP solver. Change forward lab_sea: test both EVP
109       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
110    o Initial check-in of lab_sea adjoint
111      (very similar to natl_box_adjoint/code_seaice)
112      * used C-grid and EVP solver
113      * used KPP, GM/Redi
114      * uses inAdExact=.TRUE.
115      * gradient checks fail for both ADM and TLM
116        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
117        f.d. gradients actually seem more problematic than ADM, TLM gradients;
118        issue is related to forward mismatch between g77 an ifort
119    o pkg/seaice: overhaul of thermodynamics
120     - growth.F and groatb.F are replaced by new routine seaice_growth.F
121     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
122     - move a few global fields out of SEAICE.h into seaice_growth.F and
123       make them 2D (FICE/QNETO/ ...)
124     - remove FO (it is the same as QNETO)
125     - introduce a few local fields to avoid modifying external fields such
126       as atemp, etc.
127    
128    checkpoint58s_post
129    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
130      changed exf_set_gen.F so that
131        genperiod=0 means input file is one time-constant field and
132        genperiod=-12 means input file contains 12 monthly means
133    o CG2D: use pre-computed solver main-diagonal (stored in common block);
134      this affects truncation error ; generate new output file for exp. which
135      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
136        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
137        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
138        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
139        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
140        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
141    o start implementation of deep-atmosphere and anelastic formulation
142    o verification: remove 2nd copy of input files and use script "prepare_run"
143      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
144    o mom_common/vecinv/fluxform: fix a few initialisation isssues
145    o profiles: fix for multithreaded case
146    
147    o diagnostics: rename few diags:
148      s/'PRESSURE'/'RCENTER '/g
149      s/'TICE    '/'oceFreez'/g
150      s/'TAUX    '/'oceTAUX '/g
151      s/'TAUY    '/'oceTAUY '/g
152      s/'SWFLUX  '/'oceQsw  '/g
153      s/DIFx/DFxE/g
154      s/DIFy/DFyE/g
155      and add few ocean-forcing diagnostics:
156      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
157    o modifications to pkg/seaice/growth.F and budget.F, which change results of
158      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
159      as actual snow thickness.  It now refers everywhere to effective snow
160      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
161    
162    checkpoint58r_post
163    o modifications to pkg/seaice/growth.F, which change results of
164      lab_sea experiment: fixes pertain to melting snow over open water, to
165      masking EVAP under sea ice, and to using the correct AREA variable for
166      computations of EVAP, PRECIP, HSNOW, and GHEFF
167    o add ability to read bathy, salt, and theta using MNC (off by def)
168    o add flooding algorithm and advection of HSNOW for pkg/seaice;
169      both are turned off by default and do no change any results
170    o seaice advection with pkg/thsice: a step toward the use of non-linear
171      advection scheme, but #ifdef or commented out for now (requires more EXCH).
172    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
173      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
174      in natl_box (affects results @ truncation level: update output.txt)
175    o multi-threading and IO:
176      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
177      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
178        (needed to work with SingleCpuIO): tested in all verif. exp.
179    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
180      affects the results (but none of the verification test uses this scheme).
181    o Adding some pkg/diagnostics capability to pkg/seaice
182      (will certainly be subject to changes)
183    o ctrl: adding new control variables:
184      lwflux, lwdown, evap, snowprecip, apressure, runoff
185    
186    checkpoint58q_post
187    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
188      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
189      high_res_cube configuration by 4% on Columbia.
190    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
191      add (in global_with_exf/code) a version of EXF_INTERP_READ without
192      dynamical allocation (seems to work in multi-threaded).
193    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
194      single CPU io) so that TAF does not have to see EESUPPORT.h
195    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
196    
197    checkpoint58p_post
198    o obcs: stop if obcs is used with useCDscheme = .true.
199    o shelfice:
200     - fix a sign error so that no slip at shelfice interface works
201     - remove stop for combination non-hydrostatic code and shelfice. That does
202       not mean, that the results are correct, but at least they are numerically
203       stable
204    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
205    o added adjoint exch routined for all exch*3d* routines
206      and updated flow directives
207    
208    checkpoint58o_post
209    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
210      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
211    o change controling S/R for writing pickup file (new S/R do_write_pickup)
212      and clean-up reading/writing of pickup files.
213    o fix local version of read/write pickup (NH part) in rotating_tank/code
214    o simplify EXCH interface:
215     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
216     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
217    o added the regrid package
218    o shelfice:
219     - add a simple boundary layer scheme to reduce noise
220     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
221    
222    checkpoint58n_post
223    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
224       local variable (not in common block).
225    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
226      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
227      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
228        to work with SingleCpuIO.
229    o add "_d 0" to real constant of pkg/cfc subroutines ;
230       update exp. cfc_exemple & tutorial_cfc_offline output files.
231    o multi-threading and IO:
232      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
233        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
234      - barrier before and after reading.
235      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
236      - avoid using MDS_WRITELOCAL for LAND pkg output.
237      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
238        common-block variables ; Allows multi-threading with master-thread IO.
239    o change default MAX_NO_THREADS from 32 to 4 ;
240      and stop cleanly when MAX_NO_THREADS is too small.
241    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
242    
243    checkpoint58m_post
244    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
245       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
246    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
247       keep global_ocean.90x40x15 (for AD testing) with former secondary test
248       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
249    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
250        add MITgcm_tutorials (= code + all the tutorials)
251    o ecco, option to compute cost for total ssh (mean+anom)
252    o consistent with addition of ptracer and ssh in pkg/profiles
253    o profiles: adding ptracer and ssh
254    o testreport: change multi-test output-file name
255      (from output.txt.{name} to output.{name}.txt)
256    o profiles: now ok for mutli-tiles case
257    o seaice: add 4 parameters for different advection schemes for area,
258      (effective) seaice thickness, enthalphy, and snow height. Their default
259      is the standard parameter SEAICEadvScheme
260    o calc_gw:
261     - add cosFacU in zonal viscous flux (harmonic.visc.).
262     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
263       of tutorial_plume_on_slope.
264    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
265    o calc_gw: true flux-form, account for horizontal grid spacing.
266      update rotating_tank results, but not plume_on_slope (affected at
267      truncation level, 11 digits).
268    
269    checkpoint58l_post
270    o calc_gw:
271     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
272     - remove side-drag for now (need to fix it); update plume_on_slope results.
273     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
274    o commit code to make SST/SSS weights spatially variable
275      (based on either variable in-situ or variable initial T/S weights)
276    o pkg/ecco:
277      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
278        now based on horizontally varying weights wthetaLev, wsaltLev
279      * cost_averagesflags now returns year indices in addition to day, month
280      * sflux balance is performed on annual basis
281        (sflxumm, sfluxmm2, bal_sfluxmm)
282      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
283        including separate counting and multipliers
284    o pkg/rbcs
285      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
286    
287    checkpoint58k_post
288    o testreport:
289     - always build in dir. "build" (if not there, mkdir build instead of building
290       & running in input)
291     - run in dir run (if it exists), in build otherwise.
292     - call prepare_run (if input/prepare_run exists)
293     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
294    o pkg/exf modifications to interpolation and rotation routines for more
295       reasonable treatment of North Pole singularity: for tracers North Pole
296       value is set to northernmost zonal-mean value, for zonal velocity it is
297       set to zero, and for meridional velocity it is set to northernmost value.
298    o pkg/exf/exf_check_range.F
299     - add tile index to diagnostics and move stop statement to the very
300       end of the routine.
301    o pkg/diagnostics: (diagnostics_main_init.F)
302      define title of isomorphic variables according to the current config.
303    o pkg/thsice with pkg/seaice dynamics:
304    - fix domain of computation (interior only, required for exf) and do exchanges
305    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
306    o towards a standard way of dealing with multi-threading in MONITOR
307      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
308    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
309       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
310    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
311    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
312    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
313       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
314    o tracer advection:
315     - clean-up and simplify calc_common_factors.F
316     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
317       advection subroutine (but still not used within DST advection S/R)
318    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
319    
320    checkpoint58j_post
321    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
322      from file (collects calls previously in FORWARD_STEP)
323    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
324    o adjoint store dir. adjusted accordingly
325    o genmake2
326      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
327    
328    checkpoint58i_post
329    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
330      on wind stress (SEAICEstressFactor defaults to 1.)
331    o Total number of Timers is finite (<=40): comment out 2 non-essential one
332      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
333    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
334      on CS-grid: no longer loosing mass.
335    o exf & curvilinear-grid: no longer modify longitude xC & xG.
336    o pkg/ggl90: fix sloppy output and fix a bug
337    o pkg/seaice: added SEAICEuseEVPpickup parameter
338      - Set to false in order to start EVP solver with
339        non-EVP pickup files when using SEAICEuseEVP
340      - fix sign error in diffusion in seaice_calc_rhs
341    
342    checkpoint58h_post
343    * Modifications for bottom topography control
344      o replace hFacC by _hFacC at various places
345      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
346      o add non-self-adjoint cg2d_nsa
347      o update autodiff support routines
348      o re-initialise hfac after ctrl_depth_ini
349      o works for 5x5 box, doesnt work for global_ocean.90x40x15
350    * Adding verification for 5x5 box (4-layer) bottom topography control
351    
352    checkpoint58g_post
353    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
354       used for mean seasonal cycle, mean diurnal cycle); add an example
355       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
356    o pkg/ggl90:
357      - add parameter (minimum surface kinetic energy)
358      - fix bug (avoiding division by zero)
359    o couple pkg/thsice to pkg/seaice:
360      - modify advection in seaice to accomodate new scalar fields to be advected
361      - only muliDimAdection scheme work with seaice/thsice
362      - mapping of thsice-variables to seaice-variables, back and forth
363      - does not break the verification experiments, but does not give the
364        desired results either
365    o pkg/seaice
366      - make (default) second order advection a bit less confusing?
367    
368    checkpoint58f_post
369    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
370      to pkg/seaice):
371      - new routines thsice_map_exf and thsice_get_exf provide the interface
372      - add an additional formal parameter to thsice_solve4temp
373    o pkg/exf:
374      - add new fields wspeed, snowprecip (to be able to couple to thsice)
375      - correct Stefan-Boltzmann constant
376      - new parameter for longwave surface emittance
377      - separate some stuff from exf_bulkformulae into new routines  
378        exf_radiation, exf_wind
379      - add new parameters and constants: longwave emissivity for ocean, ice
380        and snow, evaporation parameters over ice
381      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
382        either wind from stress or stress from wind
383    o pkg/thSIce:
384    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
385    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
386       and THSICE_CALC_THICKN
387    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
388    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
389      to make debugging easier.
390    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
391    o pkg/bulk_force:
392      - clean-up comments and parameters ;
393      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
394    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
395      generate new output for test-experiment: aim.5l_cs.thSI
396    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
397      testreport accordingly
398    
399    checkpoint58e_post
400    o SEAICE_CGRID adjoint done
401    o R_STAR adjoint implemented.
402      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
403      * need to sort out init. of h0facc, etc.
404    o Make pkg/profile fully independent of ecco,cost, etc. stuff
405      to be able to use it in pure forward.
406    
407    checkpoint58d_post
408    o upgrade simple test-experiment to tutorial example:
409     step.1: duplicate the experiment and (step.2) will remove the old copy.
410      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
411      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
412      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
413      tutorial_global_oce_biogeo    <- copy of dic_example
414      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
415      tutorial_plume_on_slope       <- copy of plume_on_slope
416      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
417      tutorial_global_oce_optim     <- empty for now (David ?)
418      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
419     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
420    o correct a sign problem in cost_scat.F
421    o obcs and ptracers: fix boundary conditions for advections schemes
422      with larger stencil
423    o thsice adjoint: start
424    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
425      completeness
426    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
427      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
428    o ptracers adjoint:
429      * avoid extensive recomputatations
430      * fix missing re-init. of gptr (missed by TAF)
431    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
432      me to turn off the excessive output to STDOUT that this package produces
433    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
434      and add those terms in Vector-Invariant formulation.
435    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
436      if the control period (xx_hfluxperiod etc) is 0
437    o in profiles pkg, clean routines and fix details
438    o in ecco pkg, reading ssh data:
439      fix problem in case the model does not start at iter0=0
440    o fix mnc-pickup/restart for ptracers
441    o new package prifiles:
442      code to compute profile-based cost by Gael Forget
443      (modifs in ecco, ctrl, autodiff)
444    o Benign bug fix in initialization (spotted by M. Mazloff) of
445      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
446    
447    checkpoint58c_post
448    o adjoint: finish NLFS adjoint and provide reference output in
449      verification/global_ocean.90x40x15/results_ad_nlfs
450    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
451      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
452      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
453      with SEAICE_CGRID defined.
454    o move calendarDumps from "data" to "data.cal" and clean-up the code
455      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
456    o add useEXF & useCAL flags (for now, set in hard-coded way)
457    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
458      (were missing in NH mode, and wrong in quasihydrostatic mode).
459      waiting for Chris updated version of calc_gw to add those CALLs.
460    o fix bug in quasihydrostatic S/R ;
461      add a test for this option: global_ocean.90x40x15.qshyd
462    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
463      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
464    o add on/off flag useOffLine for package OFFLINE
465    o seaice:
466      - modify advection so that it works also on the C-grid
467      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
468        problem in multi-tile runs with C-grid
469      - add flags for clipping ice velocities and/or masking solver forcing
470      - fix drag (ocean on ice) formulation and a bug that caused noise in the
471        C-grid solver
472      - added a few comments to seaice_diffusion.F
473      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
474        are now exclusive)
475      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
476        required re-ordering the code a little:
477       + make DAIRN global variable (defined in SEAICE)
478       + move computation of the viscosities eta and zeta into a new separate
479         routine (because I need to recompute them in seaice_ocean_stress.F)
480    
481    checkpoint58b_post
482    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
483      update output.txt of exp. aim.5l_cs.thSI
484    o various mnc cleanups and improvements:
485      + shrink lookup tables by factor of ~4
486      + better error reporting when running out of lookup space
487      + able to handle longer path/file names (up to 500 chars)
488    o adjoint:
489      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
490      - TBD: "hidden" mom_vecinv recomp. in dynamics
491    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
492     (allow to differentiate between forcing components using new integer flags:
493      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
494     and add new flag to put Dissipation tendency out of Adams-Bashforth.
495    o ecco
496      - enable trend removal from SSH anomaly obs.
497    o adjoint
498      - a fix for PmEpR when #undef EXACT_CONSERV
499      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
500      - try to fix "hidden" recomp. in forward_step for NLFS
501        (NLFS seems broken sometimes after I checked it in)
502    o seaice:
503     - add c-grid version of the dynamic solver:
504       + three new routines that are the c-grid substitute lsr, dynsolver
505         and ostres
506       + put a few fields that were local to dynsolver into global common
507         blocks, so that I can move the computation of stresses etc into
508         seaice_lsr (saves coding but may break the adjoint).
509     - replace more hardwired parameters by runtime parameters
510     - add ice masks that mask the rhs of the implicit solvers where there
511       is no ice (commented out in seaice_dynsolver, because i am not sure
512       if this works properly), eventually this should replace the clipping
513       of ice velocities in seaice_dynsolver to +/-40cm/s.
514    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
515      include it only where its needed
516    o move balancing of fluxes before the call of external_forcing_surf
517    o seaice:
518      - correct units of turning angles (now they are really in degrees)
519      - move computation of GWATX/Y out of main routine into dynsolver
520      - initialize GWATX/Y in seaice_init
521    o Apply mask on Fresh-Water flux (needed for SSH forcing).
522      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
523    o seaice: add runtime flags for turning angles (default to zero)
524    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
525      and trend from exf forcing and ctrl control adjustments
526    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
527      (since checkpoint57x_post)
528    o change the default rotation period to 86164.s = the Earth rotation
529    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
530      and based on a reference stratification. Tested within hs94.cs-32x32x5.
531    o seaice advection: add code for choosing between the default (2nd order
532      central differences) and multiDim advection schemes provided by
533      pkg/generic_advdiff
534    o seaice:
535      - removed all references to SEAICE_GRID.h fields from
536        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
537        (cubed-sphere configuration will change a little)
538      - grid computations in seaice_init are obsolete now.
539      - cleaned up code a little so that is easier to read (hopefully).
540      - added new (better?) discretizations of default advection and diffusion
541        (turn on with SEAICEuseFluxForm)
542      - replace 1 in 3d global fields by kSurface in growth.F
543      
544    checkpoint58a_post
545    o seaice:
546      - bug fix in advect.F
547    o shelfice:
548      - separate shelfice load anomaly from pload (breaks with time
549        dependent forcing), => introduce constant field shelficeLoadAnomaly.
550        Its default is 0., but it may be computed more cleverly from (unknown)
551        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
552        done offline. A good approximation of the pressure load anomaly is
553        necessary to avoid large initial adjustment processes underneath
554        deep-reaching shelfice.
555      - small fix in ISOMIP shelfice_thermodynamics
556      - add more sophisticated thermodynamics of Hellmer (1989), this is
557        now the default
558      - give a few constants more intuitive names
559    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
560      if bulk formulae are used in long integration (especially EmPmR). Turn
561      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
562      if balancePrintMean, the imbalance that is substracted is printed to
563      STDOUT.
564    o fix bug (typo) in obcs_apply_eta.F
565    o add a new package shelfice which enables us to model the circulation
566      underneath shelf-ice with draughts of hundreds of meters.
567     - works
568     - to do: + include improved thermodynamics
569              + check whether kSurfC (from model/inc/SURFACE.h) can be used
570                instead of new field kTopC
571              + can we use topoFile, Ro_surf and existing code in ini_depth.F
572                instead of new field R_shelfIce and new code in ini_depth.F
573                and ini_mask_etc.F?
574              + adjust vertical mixing schemes?
575    o seaice pkg:
576     - add a cpp-flag to include a simple formula for a salinity dependent
577       freezing point of sea water at the surface
578     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
579       meridional stresses are now different (and hopefully correct)
580    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
581       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
582       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
583    o pkg/diagnostics: add options and parameters for regional-statistics
584       diagnostics ; define regions by reading a region-mask from a file
585       (might add other options later)
586    o pkg/bulk_force:
587     - add option and parameters to use AIM surface-flux formulae.
588     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
589       others forcing fields (defined in PARM05, parameter file "data") are loaded
590       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
591     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
592     - use the right EXCH call for uwind,vwind (to work on CS-grid).
593     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
594       and parameters (note: calcWindStress replaces .NOT.readwindstress).
595     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
596    
597    checkpoint58
598    o add "--embed-source" option to genmake2 which, when the supporting
599      tools can be compiled (as determined by genmake2) will turn on the
600      embed_files package which then embeds the entire MITgcm source code
601      (*.[fFhc] + Makefile) used for the build within the executable
602      - requested by CNH but off by default
603      - adds a paltry <9MB to the mitgcmuv executable in most cases
604      - only writes the output when useEMBEDSRC in eedata is true
605    o clean up 3-dim. relaxation codes:
606      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
607      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
608      * Thanks to Tom Haine for testing!
609    
610    checkpoint57z_post
611    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
612      affects output (@ truncation level) of exp. plume_on_slope ; updated.
613    o fix the pickup behavior for obcs in combination with ptracers
614    o fix a bug in ptracers_external_fields_load
615    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
616      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
617    o transfered surface NH pressure to eta field (if exactConserv).
618    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
619         and update lab_sea output.txt file.
620    o completing 3-dim. relaxation code: additional term
621         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
622      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
623      * At compile time, in "EXF_OPTIONS.h" set
624          #define  ALLOW_CLIMTEMP_RELAXATION
625          #define  ALLOW_CLIMSALT_RELAXATION
626      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
627          tauThetaClimRelax3Dim = 15552000.0,
628          tauSaltClimRelax3Dim  = 15552000.0,
629      * 3 cases:
630          1) Use a constant-in-time 3-dim. field
631          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
632          3) Real-time relax. to time-evolving prescribed field
633    o Adding Laplacian-type smoothness constraint on
634      initial and boundary (forcing) controls (ic, bc)
635      * enable at compile-time via
636        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
637      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
638      * Absolute scale somewhat unclear so far
639      * no area weighting was included since no other cost term does so far
640    
641    checkpoint57y_post
642    First step for a NLFS adjoint
643    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
644    o new init. routines for calc_r_star, calc_surf_dr
645    o still need to deal with ini_masks_etc
646    o testreport seemed happy
647    checkpoint57y_pre
648    
649    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
650    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
651    o add new offset feature to offline pkg (plus minor cleanup)
652    o cfc fixes for final year of integration
653    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
654      be in GCHEM_OPTIONS).
655    
656    checkpoint57x_post
657    o fix testreport Pb in multiple test experiment.
658    o cleanup our namelist syntax in verification:
659      - make it more F95 standards compliant (some work still needed)
660      - allows the vast majority of our tests to work with gfortran
661    o Non-Hydrostatic:
662     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
663     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
664    o Allow to apply AB on T,S rather than on AB(gT,gS):
665     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
666     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
667       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
668     - need a "clever" read_pickup to restart from the other AB formulation
669    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
670    o remove some unused variables (reduces number of compiler warnings)
671    o adjoint
672      * Disable useVariableViscosity for adjoint for time being
673        (there are a number of extensive recomputations)
674      * Initialize certain variables needed for adjoint
675    
676    checkpoint57w_post
677    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
678                 fix the singleCpuIO RS version of MDSWRITEFIELD
679       and add a WARNING if using globalFiles=T with multi-processors.
680    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
681      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
682    o tracer advection scheme:
683      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
684       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
685       was not very convenient).
686      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
687       (further tests needed for the implicit DST & Flux-Limiter schemes).
688    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
689      and sRef for convenience, handy, when you want to initialize
690      ptracers in a large domain with a constant non-zero value. Also,
691      untangle ptracers_init.F a little.
692    
693    checkpoint57v_post
694    o change dome exp. to use variable viscosity in side-drag terms.
695    o remove all the files from the cfc_offline test since they are now
696      incorporated into tutorial_cfc_offline which has been producing
697      identical results for a few days of testing
698    o add new parameter: sideDragFactor to enable half-slip-side BC
699      and change side-drag S/R to use viscosity from mom_calc_visc
700      (can switch back by setting sideDragFactor=0.); affects results at
701      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
702       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
703    o vorticity & strain are now computed without masking, to account for
704      no-slip-side BC in variable viscosity calculation ; mask is applied
705      anyway later on, before computing advection/coriolis terms.
706    o modify exp4 to test new obcs support for reading from external files
707      and for passive tracers
708    o fix behavior of ptracers_monitor when monitor output is written to a
709      netcdf-file; still not independent of monitor.F (writes in the same
710      file).
711    o change default value of tRef (put a uniform, meaningful value for ocean
712      & atmos) and initialize sRef (was missing, as Martin mentioned).
713    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
714      to be proportional to enstrophy dissipation length.  Thus,
715       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
716      This is now consistent with Smagorinsky and with the manual.
717    
718    checkpoint57u_post
719    o OBCS and PTRACERS: add open boundary support for passive tracers
720      - either use homogenous (pseudo) v.Neumann conditions or prescribe
721        OB-values from file; this is not different from the way theta and salinity
722        are treated
723      - however, Orlanski-radiation conditions are not supported, and the model
724        will stop if you use pTracers and Orlanski at the same time.
725      - beefed up the rountine obcs_external_fields_load: now only those open
726        boundary values are overwritten with values from files for which there
727        are really files, otherwise the OB-fields remain untouched. This makes
728        it possible to use different OBs at different ends of the domain (as
729        with EXF)
730    o reduce number of exch calls in shap_filt (s2).
731    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
732      truncation level) 4/5 MLAdjust test results (11&12 digits match).
733    
734    checkpoint57t_post
735    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
736    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
737      same truncation, independent of the face number: affects affects several
738      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
739    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
740      note that biharmonic viscosity + no-slip was not tested in any experiment.
741    o fix bug in non-linear free-surf side-drag ; generate new output for
742      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
743    o make mnc honor the writeBinaryPrec flag for most kinds of output
744    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
745    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
746      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
747    o add brackets in multi-terms sum to get same truncation, independent of
748      the face number (manage to get exactly same value of gU,gV at the cs-edge)
749      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
750    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
751      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
752      a maximum grid-scale Reynolds number.  Also, changes all length calculations
753      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
754      Suggested values of viscosity parameters found in mom_calc_visc.
755      Many new viscosity diagnostics available.
756    
757    checkpoint57s_post
758    o Add clearing-house for viscosity calculations, mom_calc_visc and
759      correct numerous bugs in LeithD and Smagorinsky discretizations.  
760      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
761      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
762      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
763      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
764      The Strain-Tension form is now called with useStrainTensonVisc=.true.
765      ViscAhStrain and viscAhTension are now retired.
766    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
767    o In response to JMC's bug report, genmake2 now ignores any soft-links
768      that it finds in the *current* directory when searching for files.
769      Soft-links found in any other source directories will still work as
770      they did before.
771    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
772      a C routine to unlimit the stack size
773    o mnc-ify pkg/aim snapshot vars
774    o mnc-ify pkg/land as requested by Daniel
775    o various changes to mnc including:
776      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
777      - output can now be grouped so that all files within a group
778          change the ITER portion of their names in lock-step together
779      - can now read ("global") PER-FACE (in addition to PER-TILE) files
780          and works with both EXCH1 and EXCH2 (but needs more testing)
781      - writing works for all verification test cases w/ g77 on Linux
782    
783    checkpoint57r_post
784    o make MNC variable initialization happen earlier
785    o add diagnostics for (almost) each term of the momentum Eq.
786    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
787    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
788    o remove MINIMAL_TAVE_OUTPUT option ;
789      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
790    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
791      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
792    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
793    o add time-dependent SST, SSS control
794    o cost terms in ecco/ modularized (new cost_generic.F)
795    o cost_averages routines are modularized (new cost_averagesgeneric.F)
796    o new infrastructure for seaice model vs. obs misfits in seaice/
797      * driver from the_main_loop.F is seaice_cost_driver.F
798      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
799      * gradient check in Exp. 6a of natl_box_adjoint/
800    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
801      (see README file)
802    
803    checkpoint57q_post
804    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
805    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
806      - bug was reported by Jean-Michel and Ian Fenty
807    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
808      update exp. cpl_aim+ocn output.
809    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
810      Needed for high-res. runs with large global files
811      to be able to limit tapelev size
812    o Changed some tests for adjoint:
813      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
814      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
815      * global_ocean.90x40x15/ back to default 3-level checkpointing
816    o Modifications to enable scripted COMMON to MODULE conversion
817      * verification/OpenAD/code/ has necessary scripts and description;
818      * converts, compiles and runs successfully;
819    
820    checkpoint57p_post
821    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
822    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
823      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
824    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
825    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
826      (was already the case for dissipation with mom_vecinv,
827       and also the case for grad.PhiHyd when staggered-timeStep)
828      This will allow to put dissipation out-off the AB time-stepping.
829     Unfortunately, affects truncation error. Update output of exp. that "fails"
830      (cg2d matching number) and leave the others for later: front_relax(10),
831      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
832      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
833    
834    checkpoint57o_post
835    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
836      (2) its ready to be documented during the 20050801 DocFest
837    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
838      for ideal_2D_oce and lab_sea on linux_ia32_g77
839    o set to #undef CTRL_SET_OLD_MAXCVARS_30
840      in global1x1_tot/code_seaice_adj to access indices 32, 33
841      (worth another tag)
842    
843    checkpoint57n_post
844    o adding precip control xx_precip 32
845    o adding swflux control xx_swflux 33
846    o Replacing 10 forcing penalty cost routines by 1 generic.
847    o Implementing partitioning in time-mean and variable adjustment
848      for atmos. state.
849    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
850    o in natl_box_adjoint:
851      * updated exp 1 to 10
852        (but does not have time-mean vs. variable split results yet)
853    o updated global1x1/*_seaice_adj/
854      to incorporate latest changes
855    o enable useSingleCpuIO for mdsio vector routines
856      (applies in particular to tapelev I/O)
857    o removed inefficient K-loop in all active_file*control*.F
858    
859    checkpoint57m_post
860    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
861      and advect_cs (use EXCH-2 and standard cs-32 grid files).
862    o pkg/exch2: filling of face-corner halo regions is optional
863      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
864    
865    checkpoint57l_post
866     tag before updating tutorials (pre-release-2)
867    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
868       for output and interpolation of input fields onto model grid)
869    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
870       Affects results of exp. rotating_tank ; update output.txt.
871    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
872          and taking the square quantity and/or using a fraction-weight field.
873    o fix aim_diagnostics_init.F mate numbers.
874    o add mnc output capability to diagnostics/diagstat and update
875      our cvsignore files for the ACSII output generated
876    
877    checkpoint57k_post
878    o lab_sea now uses diagnostics package and provides a suite of
879      new EXF diagnostics output.
880    
881    checkpoint57j_post
882    o exf
883      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
884        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
885        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
886      * extended diagnostics output
887        - now includes all EXF variables
888        - hs, hl moved to common block
889        - separate S/R for diagnostics, called after ctrl vector is added
890        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
891        - EXFqnet contains true Qnet (i.e. includes qsw)
892      * updated verif. lab_sea, global_with_exf
893      * Rearranging hflux (exf_mapfields -> exf_getforcing)
894        to ensure that diagnostics sees a true EXFqnet
895    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
896    o diagnostics pkg: change pointers so that 1 diagnostic can be used
897      several times with different frequencies.
898    o mnc-ify the thsice package as requested by Daniel Enderton
899      - the monitor--MNC output needs work
900      - many attributes need to be added (most are currently blank)
901    o mnc-ify theaim_v23 package as requested by Daniel Enderton
902      - many attributes need to be added (most are currently blank)
903    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
904    o add Sadourny like discretization to the 4th.O vorticity advection scheme
905    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
906      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
907         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
908    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
909     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
910    
911    checkpoint57i_post
912    o Diagnostics package was changed: diagnostic allocation is now deactivated
913      by setting an empty file name in the namelist (used to be by setting 0 frequency)
914    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
915      add 1rst Order upwind vertical Shear.
916    o add a quick fix for A/B checkpointing in OFFLINE mode
917    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
918      end-run around the C/Fortran linking horror in eesup/src/timers.F
919    o added pkg/runclock: allows user to terminate run based on wall clock
920    o added non-hydrostatic scaling parameter: nh_am2
921    o pkg/my82: futile attempt to make results compiler-independent by adding
922      some "_d 0", etc. no effect.
923    o for mnc output, fill the 'T' coordinate var with myTime and create a
924      separate 'iter' variable for iteration count
925    o pkg/diagnostics:
926      add new capability: output of Global/Regional & per-level statistics ;
927      tested against monitor output (including land & thSIce) on various exp.
928    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
929    
930    checkpoint57h_done
931      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
932      data.diagnostics, data.gchem, data.ptracers) is done.
933    
934    o pkg/diagnostics: prepare for Global/Regional statistics.
935      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
936    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
937      and rename it: DIFFERENT_MULTIPLE
938    
939    checkpoint57h_post
940    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
941    o pkg/diagnostics: change output frequency, now in seconds (instead
942      of Nb of iterations). This requires to change data.diagnostics.
943    checkpoint57h_pre
944    
945    o in mnc, let the user create the output dir if both mnc_outdir_date
946      and mnc_outdir_num are false
947    o add fflags() to pkg/diagnostics which allows one to specify, on a
948      per-file basis, the file precision [default behavior is unchanged]
949    o added diagnostics to pkg/kpp, including computation of mixed layer
950      depth based on a temperature/density criterion
951    o updated verification/natl_box to test the new pkg/kpp diagnostics
952    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
953    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
954    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
955      not mnc -- this mistake was found by JMC and is now corrected
956    
957    checkpoint57g_post
958    o add Adams-Bashforth 3rd Order time stepping:
959      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
960      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
961    checkpoint57g_pre
962    
963    o make lambda[Theta,Salt]ClimRelax spatially varying
964      (default remains spatially uniform constant based on tau)
965    o added new control variables
966      * init. uVel, vVel, etanN
967      * lambda[Theta,Salt]ClimRelax
968    o separate masks used for ctrl_pack/unpack 'from write_grid' output
969      (suggested by G. Forget)
970    
971    checkpoint57f_post
972    o add parameter "baseTime" = model base time = time at iteration zero
973      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
974      account for baseTime shift
975    o move Coriolis arrays from PARAMS.h to GRID.h
976    checkpoint57f_pre
977    
978    o mnc-ifying the seaice package
979    o introduced an alternative length scale calculation for use in the limiting
980      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
981    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
982    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
983      as well as grad(vort3).  Made it compatible with both approximate form
984      for the cubed sphere and full form of these gradients.  Added flag
985      useFullLeith to select between approximate and full form.  
986    o add "d0" in getcon.F to reduce differences between compilers/platforms
987      update output.txt of exp. fizhi-gridalt-hs
988    o change port_rand funtion to allow to set the seed.
989    o fix obscure MNC bug involving conversion between reals and integers
990      - it caused no problems with certain (eg. gcc, ifc) compilers but the
991        new version is now more standards-compliant
992    o adjoint-related modifications
993      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
994      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
995      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
996    
997    checkpoint57e_post
998    o Adding eddy stress controls a la Ferreira et al.
999    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1000    
1001    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1002      update output.txt of exp. fizhi-gridalt-hs
1003    o add more "Z" dimensions and associated coordinate vars to MNC
1004    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1005    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1006      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1007      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1008      months and years.  Requires pkg/cal.
1009    o diagnostics: add pickup functionality
1010      - off by default for backwards compatibility
1011      - current version only uses MDSIO -- MNC will be added
1012    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1013    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1014    
1015    checkpoint57d_post
1016    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1017    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1018      output from the diagnostics package
1019    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1020    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1021      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1022    o add coordinate variables to the MNC output from the diagnostics package
1023    o change MNC-flags default value: true when useMNC=TRUE
1024    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1025      the ability (off by default) to read the grid information using MNC
1026    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1027    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1028    o do snap-shot diagnostics at the middle of the time-interval (instead of
1029      at the end).
1030    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1031      new test for AIM with thSIce + slab-ocean
1032    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1033    o move state variable diagnostics to the beginning of the time step ;
1034      (note: still needs some work specially for snap-shot diagnostics)
1035      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1036    
1037    checkpoint57c_post
1038    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1039    o generate new output.txt files on faulks with g77 & the new -ieee option
1040    checkpoint57c_pre
1041    
1042    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1043      update output.txt of exp. global_ocean.90x40x15
1044    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1045      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1046    o add saltFlux(+File) forcing capability with periodicExternalForcing
1047    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1048    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1049    o improvements for the MNC output from DIAGNOSTICS:
1050      - correct handling of the unlimitied dimension
1051      - all dims now have associated coordinate variables
1052      - variables located at U, V, and Corner ("Z") points are now written
1053        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1054        *all* data points are output
1055    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1056    o added pkg/seaice/seaice_monitor.F
1057    o mdsio_readfield.F can now read files visible only to master MPI process.
1058    o pkg/seaice: some test code for ice-modified ocean stress
1059    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1060      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1061      spurious negative numbers for precipitation and humidity.  Will cause
1062      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1063    o pkg/ctrl/
1064      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1065        May be enabled via doPackDiag
1066      *  introduce z-scaling of
1067         + gradient (doZscalePack) and
1068         + control (doZscaleUnpack)
1069    o pkg/mdsio/
1070      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1071      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1072    
1073    checkpoint57b_post
1074    o simplify options in diagnostics_fill arguments (remove weird combinations)
1075    o fix MNC coordinate variables so that they now contain per-face index
1076      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1077      general, EXCH2 grids are only aligned to a "local" coordinate system
1078    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1079    o Implement instantaneous output within pkg diagnostics:
1080      setting a negative frequency in data.diagnostics produces
1081     "snap-shot" output (as opposed to time-average if freq > 0)
1082    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1083      NOTE: change ptracer diagnostics name: use 2 characters to work with
1084            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1085    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1086      becomes the coordinate variable for the 'T' dimension
1087    o add CF-style coordinate variables to MNC
1088      - just a first cut:  numbers are meaningless on the cubesphere and
1089        missing along the T axis but otherwise it works!
1090    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1091    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1092    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1093      this is based directly on what the model compute, so that the content of
1094      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1095    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1096    o clean up build options files for SunOS, in particular
1097      - remove -traditional from xmakedepend
1098      - change -xarch=v9 to -xarch=native for f77
1099      - restore use of make (not gmake)
1100      - add CC=gcc if using g77
1101    o changes per discussion of AM, JMC, & EH3 today:
1102      - move redundant "grid" variables out of "state" -- in preparation of
1103        creating proper CF-style coordinate variables and in recognition
1104        that any/all grid variables can be easily copied (eg. w/NCO) from
1105        the grid files into any of the other NetCDF files
1106      - *always* output grid variables with MDSIO (this will eventually be
1107        changed)
1108      - output MNC grid file if useMNC is true
1109    o every instance of _END_MASTER() has been found and replaced with
1110      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1111      preprocessors
1112    o re-arrange diagnostics pkg initialisation:
1113     - allow each package to extend the available diagnostics list
1114     - add some checking and fix small problems (multi-threaded, ...)
1115     - new S/R diagnostics_fill (replace fill_diagnostics):
1116       look through the short list of active diag. (instead of the long list)
1117       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1118    
1119    checkpoint57a_post
1120    o this set of changes restores TAMC compatibility
1121      tested for global_ocean.90x40x15 adjoint on trough
1122      (what a pain)
1123    
1124    checkpoint57a_pre
1125    o some modifs in tools/build_options for sunos
1126    o call ctrl_pack for ctrl at end for optimcycle=0
1127    
1128    checkpoint57
1129    o add horizontal bi-harmonic viscosity for vertical velocity
1130      - new parameter viscA4W (defaults to viscA4)
1131      - affects only non-hydrostatic code
1132      - to be done: no-slip lateral boundary conditions
1133    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1134    o implement Implicit Vertical advection for pTracers
1135    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1136      (implemented also for implicit vertical diffusion & advection)
1137    o OBCS: extend application of tracer open boundary conditions
1138      to a strip beyond the boundary of width Olx/Oly
1139    o add call monitor to TAF set of required calls (flow directives)
1140      and include in natl_box_adjoint
1141    o untangle a few ifdefs related to cost, ctrl, autodiff
1142      untangel a few ALLOW_ECCO_OPTIMIZATION
1143    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1144      (theta2, salt2 in ecco_cost_weights)
1145    
1146    checkpoint56c_post
1147    o OBCS as control variables
1148      - update ctrl_ad_diff.list, obcs_ad_diff.list
1149      - remove balance of obcs controls from default
1150      - fix index bug nobcs in ctrl_init
1151      - fix dummy fields filen in ctrl_pack
1152      - add dummy weights for obcs
1153    o lsopt: comment out fort.94 output
1154    o optim:
1155      - remove unnecessary header files
1156      - adjusted namelists
1157      - add xerbla.F to Makefile
1158    o exf:
1159      - multiple modifications of exf_check_range
1160      - unit change in exf_init_runoff from [m/year] to [m/s]
1161    o mdsio:
1162      - i/o-vector change debugLevel from debLevA to debLevB
1163    
1164    checkpoint56b_post
1165    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1166      is called from DO_THE_MODEL_IO
1167      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1168      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1169      - clean up PTRACERS_WRITE_TIMEAVE a little
1170    o add another verification experiment that tests both the cfc-pkg and
1171      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1172      reactive tendencies treated inline with regular timestepping
1173    o testreport previously did a lousy job of comparing small numbers, so
1174      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1175      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1176      testreport.
1177    o ptracers_monitor: bug fix for MPI
1178    
1179    checkpoint56a_post
1180    o GCHEM: finish reorganizating the package
1181      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1182        (introduces another 3D-array for each passive tracer, but only if
1183        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1184        gchemTendency is not needed because the timestep is done separately)
1185      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1186      - GCHEM is now---more or less cleanly---separate from PTRACERS
1187      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1188        so clear to me how that should be done in a general way.
1189    o CFC: improve formatting of output in CFC_ATMOS
1190    o PTRACERS:
1191      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1192        that ALL experiments with ptracers enable can be checked. This makes
1193        GCHEM_MONITOR obsolete.
1194      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1195        monitorFreq
1196      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1197    o add PTRACERS (PTR0[1-5]) to testreport output
1198    o exf_check_range:
1199      * default changed to .TRUE.
1200      * will check values for niter0 if debLevA, every timestep if debLevB
1201      * STOP in exf_check_range if 'out of range'
1202      * range chosen generous to allow for potential extema
1203      TBD: a version with stricter range
1204           permitted range would be runtime parameters
1205    o GMredi:
1206      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1207      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1208      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1209    o GCHEM:
1210      - move call to GCHEM_FORCING_SEP, so that it is now called before
1211        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1212      - introduced a useGCHEM runtime flag and applied it everywhere.
1213      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1214        this flag is now only visible within GCHEM-pkg routines.
1215      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1216        be replaced by a 3D array that is computed before thermodynamics; for
1217        this, the tracer ID iTracer had to be included into the parameter list
1218        of ptracers_forcing
1219      - set up forward_step to call gchem_forcing, that will replace
1220        gchem_forcing_int in ptracers_forcing
1221      - cleaning up
1222    o small cleaning of exch2: remove files that are also in eesupp/src
1223    
1224    checkpoint56
1225    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1226    o mnc: cleanup "full" files--fixes out-of-memory problem
1227    o ECCO-GODAE
1228      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1229      * fully merged and updated from SIO code
1230        windstress sign change affects
1231        - exf_inscal_[u/v]stress
1232        - sign of xx_tau[u/v] adjustments
1233        - signs in cost_scat
1234      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1235      * natl_box_adjoint updated and compressed
1236      * 2-level checkpoint switch added
1237        (tested in EXP. 1 of natl_box_adjoint)
1238      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1239    o SVD
1240      * first complete, non-hacked version for SVD calculations
1241      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1242        performed via direct access files admtlm_vector.it????
1243        (via ctrl_[un]pack)
1244      * optimcycle is used for ARPACK iteration counter
1245        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1246      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1247        and add linear transforms where necessary
1248      * controls are initial/final SST, SSS (can be extended; need to check
1249        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1250    o mdsio: filename info to both stderr, stdout
1251    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1252      from sign change
1253    
1254    checkpoint55j_post
1255    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1256      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1257    o add consistent build directories and .cvsignore files to verification
1258    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1259    o make all subroutines 30 or less characters in length for certain older
1260      compilers to work (a thorough search only turns up two routines in
1261      pkg/ptracers)
1262    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1263      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1264    
1265    checkpoint55i_post
1266    o change arrays for total vertical diffusivity (2.D if explicit,
1267      3.D if implicit) ; each ptracer uses its own background value.
1268    o added mnc/NetCDF output capability to ocn_compon_interf
1269      - added bits to verification/cpl_aim+ocn so that it can run on
1270        ITRDA and other clusters without the mpirun "-wd" option
1271    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1272      configuration
1273    o give MNC the ability to create additional files rather than
1274      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1275      - the default is just less than 2GB which is a practical limit
1276        on many systems
1277    o Compute the non-local term using either KPP vertical diffusivity (=default)
1278       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1279    
1280    checkpoint55h_post
1281    o add verification test "vermix"
1282    o remove all the *_ioinc flags and replace with the single global
1283      outputTypesInclusive flag
1284    o allow to set a vertical profile of vertical diffusivity for T & S
1285    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1286    o useMNC moved from data.mnc to data.pkg
1287    
1288    checkpoint55g_post
1289    o Renaming carbon AD experiments to comply with testreport conventions
1290    o Updating adjoint of Held-Suarez hs94.1x64x5
1291    o Fixing directives for non-ECCO forward_step, after ECCO directives
1292      have been fixed to avoid recomp. of do_oceanic_phys
1293      Works well for global_ocean.90x40x15,
1294      but recomp. issue remains for carbon
1295    o Updating adjoint output for natl_box_adjoint after
1296      pkg/ecco has been modified (see taga c55d_post)
1297    
1298    checkpoint55f_post
1299    o rename to timeave_init_fixed
1300    
1301    checkpoint55e_post
1302    o some delicate re-shuffle of store directives to avoid one
1303      extra call of do_oceanic_physics
1304      affects ecco_the_main_loop.F, do_oceanic_physics.F
1305      checkpoint_lev1_directives.h
1306    o NB: this may break global_ocean adjoint temporarily,
1307      but it is clear how to fix it. Will do later, need this now.
1308    
1309    checkpoint55d_post
1310    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1311    o ecco_cost_weights is modified to 1x1 runs
1312    o modifs to allow observations to be read in as
1313      single file or yearly files
1314    o enable to read exf forcing fields as either
1315      single file or yearly files (flag useExfYearlyFields)
1316    checkpoint55d_pre
1317    
1318    o switch between 2-level and 3-level checkpointing
1319    o add ability of MNC to write local and "partial" (eg. 2D slices where
1320      the full 3D field is never actually stored) arrays to NetCDF files
1321      with the correct (that is, the complete multi-dimensional) set of
1322      array indicies
1323      - used in mom_vecinv() to write the diagFreq output
1324      - tested (demonstrated) in verification/aim.5l_cs
1325    o further mnc-ification
1326      - add verification/lab_sea to the list with mnc setups
1327      - fix undefined mnc v-names in cd_code
1328      - add kpp to mnc output (both snapshot and timeave)
1329    o non-hydrostatic code
1330      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1331        in calc_gw.F
1332      - defaults to viscAh
1333      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1334        friction or Leith) in non-hydrostatic mode, as long as there is
1335        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1336    o pkg/cost
1337      extend simple cost functions to treat time mean quantities
1338      (T,U,V) via cost_accumulate_state from cost_tile
1339    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1340        be 2 times larger than the minimum size the advection scheme requires.
1341        now get a perfect conservation of salt in advect_cs test-exp (updated)
1342    o GGL90 (Gaspar's TKE mixed layer)
1343      - add horizontal diffusion of TKE, requires exchanges in
1344        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1345        default. In OPA there is no horizontal diffusion of TKE but the
1346        mixing coefficients are computed from a horizontal average of TKE of
1347        6 points or so. I think that diffusion has a little more physical
1348        justification.
1349      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1350        was in vain)
1351      - mask tke-variable in ggl90_init
1352    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1353    o fix biharmonic diffusion on CS-grid.
1354    o more obcs stuff
1355      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1356        for reading boundary values. This routine is called from
1357        obcs_prescribe_read
1358      - updated obcs_check
1359      - changed sponge layer relaxation parameter units for days to seconds
1360      - turned off sponge layer by default
1361      - changed argument list of OBCS_CALC to myTime+deltaTclock
1362      - fixed about 35 bugs in obcs_external_fields_load
1363    
1364    checkpoint55c_post
1365    o obcs stuff
1366      - new runtime flags useOBCSprescribe, useOBCSbalance
1367      - re-arranged obcs_calc
1368      - moved exf_getobcs to obcs_prescibe_read
1369        obcs_prescibe_read is called after ORLANSKI stuff
1370        and independent of it (executable can contain all).
1371      - updated obcs_check
1372      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1373        These may be necessary only if tangential velocities are
1374        prescribed at OB, not sure, needs testing.
1375    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1376      which simplifies the calls and passes the ifc check-bounds test
1377    
1378    checkpoint55b_post
1379    o add a 2D scalar, Z location, exchange_2 routine.
1380    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1381      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1382      affects advect_cs results (for the wrong reason): update output.txt
1383    o use a more standard discretization for biharmonic viscosity ;
1384     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1385      affects results of dome set-up: update output.txt
1386    o fix gad_advection.F (CubedSphere part), back to version 1.23
1387    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1388    
1389    checkpoint55a_post
1390    o merged code to
1391      * prescribe/read time-dependent open boundaries
1392        (works in conjunction with exf, cal)
1393      * sponge layer code for open boundaries
1394      * each boundary N/S/E/W now has its own CPP option
1395        (healthy for the adjoint)
1396    
1397    checkpoint55
1398    o up-to-date adjoint of previous breaks
1399      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1400      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1401      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1402      - carbon: * remove tr1-related adjoint verification
1403                * add ptracer as control variable
1404    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1405      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1406    
1407    checkpoint54f_post
1408    o in verification/carbin/ remove experiment related to
1409      ALLOW_PASSIVE_TRACER (array tr1 etc)
1410      code_ad/ input_ad/ results_ad
1411    
1412    o add two new packages
1413      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1414        + subject to optimization (memory)
1415      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1416        + subject to reordering (many GOTOs in the original code)
1417        + so far opps is called for every (i,j) point, and then operates in
1418          the vertical; one may want to reorder the scheme in order operate in
1419          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1420          fields)
1421    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1422      - all verification tests compile and run with linux_ia32_g77
1423      - defaults are compatible with current input files--nothing
1424        should change if you were not previously using MNC
1425      - MNC output has been added in numerous places (eg. timeave)
1426        but there are still a few writes not yet do-able with MNC
1427        (this is in progress)
1428      - flags now allow for either/or/both use of MDSIO and MNC and
1429        documentation will soon follow
1430      - numerous small formatting cleanups for ProTeX
1431    o add version info (via BUILD_INFO.h) to MNC and stdout
1432    
1433    checkpoint54e_post
1434    o add two new packages
1435      - pp81 (Packanowski and Philander, 1981), Richardson number and
1436        stratification dependent mixing
1437      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1438      - these scheme operate in a similar manner as KPP (without ghat, of
1439        course), however there is only one diffusivity that is used for both
1440        temperature and salinity (and passive tracers)ç
1441    o add offline package
1442    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1443      provided by Stephanie Dutkiewicz
1444    o genmake2: add ability to search for C compilers and cleanup test output
1445      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1446    
1447    checkpoint54d_post
1448    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1449    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1450      leading to additional shift by 5 days each year of integration
1451       (i.e. leading to considerable offset over the years)
1452    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1453    o start with no AB and no initial filtering (staggerTimeStep):
1454      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1455    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1456      (external loading & cpl import/export stay in forward_step.F)
1457    o update coupling interface to work with new staggerTimeStep
1458    o change MDSIO ptracers_pickup.
1459    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1460    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1461    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1462    
1463    checkpoint54c_post
1464    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1465      this affects (truncation error) output.txt of test-exp:
1466       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1467    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1468    o change Qnet to always be the net heat flux, (+upward).
1469      affects (truncation error) output of natl_box exp.: updated
1470    o define the max number of passive tracers in PTRACERS_SIZE.h
1471    o start to test mnc routinely in exp0
1472    o add sea-ice loading (sIceLoad) as a new forcing field.
1473    
1474    checkpoint54b_post
1475    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1476       impressive on Altix and Opteron systems)
1477    o diagnostics can now write NetCDF files through the mnc package
1478    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1479    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1480    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1481      affects (truncation error) output of lab_sea & natl_box exp.: updated
1482    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1483    
1484    checkpoint54a_post
1485    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1486    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1487    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1488    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1489      + internal_wave (shift in writing cg2d_ini_res)
1490    checkpoint54a_pre
1491    
1492    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1493      - modified verification/lab_sea and natl_box_adjoint accordingly
1494    
1495    checkpoint54
1496    checkpoint53g_post
1497    o prepare splitting of thermodynamics: store convect.counter in common block
1498    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1499      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1500    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1501    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1502    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1503    o restore adjointability
1504    
1505    checkpoint53f_post
1506    o modifications that affect AIM experiment results (update output.txt):
1507      - no advection of S at top interface Nr (pkg/generic_advdiff)
1508      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1509    o AIM pkg:
1510      - include stability function into surf.Flux derivative relative to Tsurf
1511      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1512    
1513    checkpoint53e_post
1514    o merged cylindrical coord configuration
1515    o added rotating_tank experiment
1516    checkpoint53e_pre
1517    
1518    checkpoint53d_post
1519    o faulks upgraded: re-generate output.txt that have changed:
1520       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1521    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1522    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1523    o added Sadourny discretization of Coriolis
1524      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1525      - re-enabled use of omega3 (useAbsVorticity)
1526    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1527      vector-invariant equations
1528      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1529    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1530      hopefully without new bugs
1531      - still to do: biharmonic friction for non-hydrostatic w
1532    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1533    o regenerated output for global_ocean_ebm (using -ieee)
1534    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1535      of mom_common/
1536      - simple re-arrangement of instructions within computing loop
1537    checkpoint53d_pre
1538    
1539    checkpoint53c_post
1540    o new version of coupler for AIM+thSIce and Ocean models
1541     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1542     - land: change Evaporation of snow
1543     - aim with thSIce: fix bug in snow-precip.
1544    o changes to calc_gw.F
1545     - bug fix for w^2 term near the bottom boundary
1546     - (hopefully) improve the lateral slip boundary condtions for use with
1547        partial/looped cells
1548      - because the bug fix changes two verification experiments anyway (exp5
1549        and plume on slope), change the lateral boundary condition from half slip
1550        to the value of no_slip_sides
1551    o ebm package wasnt quite up to the parallel task. Fixed that.
1552    o Adjoint of EBM package + verification
1553      * TLM OK
1554      * ADM not sufficient accuracy yet (needs further testing)
1555    
1556    checkpoint53b_post
1557    o Commiting new energy balance model to repository
1558      * package is pkg/ebm
1559      * verif. is verification/global_ocean_ebm
1560      * references are in ebm_driver.F
1561    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1562    C        Global thermohaline circulation. Part I:
1563    C        Sensitivity to atmospheric moisture transport.
1564    C        J. Climate 12(1), 71-82
1565    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1566    C        Global thermohaline circulation. Part II:
1567    C        Sensitivity with interactive transport.
1568    C        J. Climate 12(1), 83-91
1569    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1570    C        Destabilization of the thermohaline circulation
1571    C        by atmospheric eddy transports.
1572    C        J. Climate 7(12), 1870-1882
1573    o Will need long integration testing.
1574    checkpoint53b_pre
1575    
1576    o created pkg/mom_common in preparation for variable viscosity code
1577    o renamed and split ini_mnc_io
1578    o pkg/land: only liquid water can diffuse or run-off
1579    o AIM using land: soil wetness availability account for snow
1580    o added printMapIncludesZeros to EEPARMS namelist
1581    
1582    checkpoint53a_post
1583    o restore TAMC compatiility for exf_constants.h
1584      (no usage of _d in .h)
1585    o Additional storing in KPP in an attempt to fix
1586      TAMC problem with adjoint of KPP code.
1587      (no success...)
1588      Identical code works fine with TAF.
1589    o Fixed verification/natl_box_adjoint experiments.
1590      Initial conditions for Experiments 4 and 5 are now
1591      set to "SEAICE_initialHEFF=0", which is more reasonable,
1592      and hence gives results closer to that of Experiment 2.
1593      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1594    
1595    checkpoint53
1596    o stable checkpoint with up to date adjoint
1597      TLM tests only run for 1st grdchk at the moment. Its unclear if
1598      this is a code problem or a problem with resetting code for g_
1599      variables that is being autogenerated wrong.
1600      Otherwise:
1601       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1602       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1603         are both still in chaos following their security messes.
1604    
1605    checkpoint52n_post
1606    o various build (mostly genmake2) changes including:
1607      - ability to build/run more easily within Cygwin and MacOS X
1608      - more complicated Makefiles with a stronger dependence on Gnu Make
1609    o pkg/seaice modifications
1610      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1611        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1612        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1613      - changed proxy for geostrophic velocity and updated
1614        verification/lab_sea/results/* accordingly
1615      - removed ADI dynamic solver from pkg/seaice
1616      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1617        they caused a segmentation fault under certain circumstances
1618      - removed unused field WATR
1619    o bug fix in exf-package:
1620      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1621         now reflect that.
1622    o small fixes in the cal-package:
1623      - set reference date to first of January for the 'model'-calendar
1624      - failing of cal_CheckDate in cal_FullDate now actually results in a
1625        warning
1626    o small modifications in exf-package to increase flexibility:
1627      - change climtempfreeze from a constant to a runtime parameter that
1628        is specified in data.exf_clim (default = -1.9)
1629      - introduce runtime parameter windstressmax (default = 2.0) that is
1630        specified in data.exf
1631    o fix in pkg/thsice:
1632      - update Evap (Tsf changes) to be consistent with Latent heat flux
1633      - maintain snow precipitation unchanged (even if Tsf >=0).
1634     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1635    
1636    checkpoint52m_post
1637    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1638      this does not change any of the results, because myIter=0 in swfrac always
1639      lead to jwtype=2 (the default anyway), but the call makes little sense
1640      as a default
1641    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1642    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1643      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1644    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1645    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1646    o extending useSingleCpuIO option to work with new exch2 I/O format
1647      - old-style, missing-tile I/O is still accessible by defining CPP
1648        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1649    o monitor package can write to NetCDF files and/or STDOUT
1650    o fix re-definition bug in MNC_GRID_INIT_ALL()
1651    o doc/api_reference added
1652      - a framework for building an API Reference Manual using all
1653        the "protex" comments embedded in the code
1654      - see pkg/generic_advdiff, pkg/mnc for examples
1655    o MNC:
1656      - make myThid the last argument for all subroutines
1657      - new default for the grid files: NO halos
1658      - add useMNC and other run-time flags
1659      - separate per-file-group handling of the unlimited dimension
1660      - early initialization of MNC w/ flags read at the eeboot stage
1661        and lookup tables set in initialize_fixed
1662      - write all MNC output to a freshly-created directory
1663    o thermodynamics sea-ice (thsice) is now tested with testreport.
1664    o test exp. advect_cs: use the standard cs32 grid ; update output.
1665    o Added functionality to grdchk:
1666      pick global i,j,k position (or nearest wet) where to perform check.
1667    
1668    checkpoint52l_post
1669    o new land formulation:
1670      a) use ground enthalpy as prognostic variable to ensure exact
1671         energy conservation.
1672      b) account for water temperature and for latent heat of freezing
1673         in all processes (rain, run-off, ground storage)
1674      c) compute surface and ground temperature implicitly.
1675    o aim_v23 modification for new land model:
1676      a) Treat separately land / ocean / sea-ice surface fluxes
1677         to allow implicit computation of land & sea-ice surface temp.
1678      b) add snow precipitation.
1679    checkpoint52l_pre
1680    
1681    o fix problem (when 1 tile is empty) in min/max monitor.
1682    o fix bug in timeAve (u,vZetatave in common block)
1683    o no restoring terms under ice for pkg/seaice
1684    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1685    o bug fix for pkg/seaice pickups
1686    o change MNC call locations and add coordinate attributes
1687    o mask vorticity at the corner ; affects global_ocean.cs output
1688    o fix ini_curvilinear_grid ; test CS experiments with mpi
1689    o aim.5l_cs: modify sea-ice fraction input file ; update output
1690    o exf: Adding simple range check routine for exf fields after read
1691    
1692    checkpoint52k_post
1693    o removed top-level directory "diags"
1694      - we migrated these functions to pkg/timeave a long time ago
1695    o fixed bug introduced in pkg/monitor
1696    o accuracy ctrlprec = 32 insuffient for gradient checks using
1697      averaged fields (I/O via cost_averages)
1698      -> use ctrl.h in active_file*.F to control I/O precision.
1699    o paramter list of CALL ADTHE_MAIN_LOOP
1700    o added initial do_the_model_io to ecco
1701    o set all ...Freq to zero after cost_final
1702      taveFreq, dumpFreq, pChkptFreq
1703    o MAIN and ECCO differentiability restored
1704    
1705    checkpoint52j_post
1706    o fix nchklev in tamc.h for global_ocean...
1707    o Bringing flow and store directives up-to-date
1708    o Really weird thing!
1709      call do_the_model_io from the_main_loop with parameters
1710      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1711      TAF places a faulty re-call of initialise_varia
1712      after cost_final call which should not be there!
1713    checkpoint52j_pre
1714    
1715    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1716      error messages
1717    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1718    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1719      debug output
1720    o modfied mdsio_writefield.F to handle non-global files under exch2
1721    o update AIM Cubed-Sphere exp (aim.5l_cs):
1722      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1723    o update AIM Equatorial Channel exp:
1724      use standard aim_v23 pkg and change the SST fields to be more realistic.
1725    o globalFile now works with exch2
1726    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1727      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1728    o limit timeave output for hi-res integrations
1729    
1730    checkpoint52i_post
1731    o removed CPP_EEOPTIONS.h from verification/*/code
1732    o updated the tiling for global_ocean_pressure
1733    checkpoint52i_pre
1734    
1735    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1736      the old pkg/aim).
1737    
1738    checkpoint52h_pre
1739    o shortened offending lines in exch2_send_rx?.template
1740    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1741    o genmake2: add build & execute test for NetCDF code
1742    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1743      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1744    o added useSingleCPUIO flag to monitor.F and mon_out.F
1745    o added temporary hack for sea-ice dynamics on the cube:
1746      metric terms are ignored and it is assumed that
1747      there is no sea-ice on cube faces 1, 2, 4, and 5.
1748    
1749    checkpoint52f_post
1750    o added exch2 cube routines to pkg/exch2
1751    o modified hs94.cs-32x32x5 to use it
1752    o added new grid files to hs94.cs-32x32x5
1753    checkpoint52f_pre
1754    
1755    checkpoint52e_post
1756    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1757      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1758    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1759      to work with implicit vertical advection and AB ;
1760    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1761    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1762     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1763    checkpoint52e_pre
1764    
1765    o fix bug in impldiff when Nr=1 or Nr=2.
1766    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1767    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1768    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1769      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1770    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1771    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1772    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1773    
1774    checkpoint52d_post
1775    o re-tiled many expts to allow comparison in multi-processor mode
1776      - updated output accordingly
1777      - changed hs94.128x64x5 to use intial T from file rather than use the
1778        random number generator
1779    o add infrastructure in model routines for fizhi and gridalt packages
1780    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1781    o changes to permit hi-res, cubed-sphere, configuration
1782      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1783      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1784      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1785        of surface winds for the cube
1786      (A verification experiment, based on global_ocean.cs32x15, but with
1787       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1788       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1789       complete with example surface forcing files and matlab scripts to look
1790       at the output and compare it with that of global_ocean.cs32x15.)
1791    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1792       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1793       to conform to the common rule.
1794    o check-in the first version of the coupler + interfaces for multi-components
1795       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1796       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1797       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1798       - ocean and atmos. share the same horizontal grid (no interpolation).
1799       - exchanges between component and coupler is done in forward_step
1800    o new verification experiment, cpl_aim+ocn:
1801       coupled ocean - AIM atmosphere on cs32 grid.
1802    
1803    checkpoint52d_pre
1804    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1805    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1806    
1807    checkpoint52c_post
1808    o Fixing OPTIONS files for use of exf:
1809      - ALLOW_ECCO not needed
1810      - ECCO_CPPOPTIONS.h should not be included from
1811        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1812        as has been the case in the past
1813      - All cal/exf related options are currently set in
1814        single header file. Should remain so until we
1815        agree on a consistent new policy.
1816    o Removed all CPP options for cal package.
1817      cal has no more CPP options.
1818    o modified STOREs in GAD_ADVECTION
1819    o corrected key comp. for passkey
1820    
1821    checkpoint52b_post
1822    o new version: "thsice" of thermodynamic sea-ice pkg:
1823     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1824     - modify fluxes but do not change theta directly;
1825     - light cleaning of bulk_force pkg (still needed with thsice).
1826     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1827       + output_thsice.txt to test thsice & bulk_force pkgs.
1828    o put back grid & coriolis monitor output.
1829    checkpoint52b_pre
1830    
1831    o call "do_the_model_io" at the beginning (=> dump initial state)
1832    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1833    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1834      (need info on NUMBER_OF_PTRACERS)
1835    o missing PTRACERS headers in some routines
1836    o default tamc.h in pkg/autodiff supposed to crash
1837      to ensure proper customization
1838    
1839    checkpoint52a_post
1840    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1841      - moved surfaceTendencyTice from pkg/seaice to main code
1842      - subroutine FREEZE_SURFACE now limits only surface temperature
1843        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1844        => new output.txt for global_ocean.cs32x15 & global_with_exf
1845      - keep the old version of FREEZE for backward compatibility;
1846        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1847      - corresponding modifs for TAF directives
1848    o added surface flux output variables to TIMEAVE_STATVARS
1849    o time-averaged output for pkg/ptracers
1850    o fix problem with ECCO-related divided adjoint
1851      snapshot file was missing some ad-variables,
1852      but no warning issued by TAF
1853    
1854    checkpoint52a_pre
1855    o some bug fixes for #undef REAL4_IS_SLOW
1856    
1857    checkpoint52 = ecco_c52_e35
1858    o after testing adjoints of checkpoint51u_post
1859    
1860    checkpoint51u_post
1861    o this is the post-merge tag of the ecco-branch
1862      (needs another clean checkout and re-testing)
1863    o various natl_box_adjoint configs and results
1864      but no input fields
1865    o obcs adjoint not yet merged!
1866    o adding ECCO global 1x1 and 2x2 degree configs
1867    o updated/extended some store directives for seaice
1868    o pkg/ecco now containes ecco-specific part of cost function
1869    o top level routines the_main_loop, forward_step
1870      supersede those in model/src/
1871      previous input data.cost now in data.ecco
1872      (new namelist ecco_cost_nml)
1873    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1874    
1875    checkpoint51t_post
1876    o this is the pre-merge tag of the ecco-branch
1877    
1878    checkpoint51s_post
1879    o cleanup: removed various obsolete #define-s
1880    o pkg/grdchk
1881      - renamed 'ph-grd 3' to 'grad-res'
1882      - merged from ecco-branch
1883        (remaining bug fixes for obcs gradient checks)
1884      - additional high-precision output for testreport
1885        (grep for 'precision_grdchk_result')
1886    
1887    checkpoint51r_post
1888    o cleaned up or removed CPP_OPTIONS.h files
1889    o updated results for some of the tests to reflect the new
1890      optfiles (-ieee: -O0 instead of -O3)
1891    
1892    checkpoint51q_post
1893    o cd_code:
1894      - moved cd_scheme.F -> cd_code_scheme.F
1895      - separate read_checkpoint from cd_code_ini_vars.F
1896      - separated cd_code part from write_checkpoint
1897      - updated AD_SOURCE, generated .flow
1898      - added CD_CODE_VARS.h to the_main_loop
1899      - Moving cd_code specific store dir.s to pkg/cd_code
1900    o ctrl package totally restructured
1901      - pack/unpack now optional and decoupled from
1902        xx_/adxx_ I/O
1903      - ctrl_pack/unpack cleaned
1904        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1905      - confined inclusion of AD_CONFIG.h to where necessary.
1906    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1907    
1908    checkpoint51p_post
1909    o create initial cd_code package
1910      - WARNING: the initialization of fields within packages
1911        is broken because INI_FIELDS (where READ_CHECKPOINT is
1912        called) is called *before* PACKAGES_INIT_VARIABLES.
1913        This seems to be backwards since
1914        1) its important to initially zero the entire field including
1915           the "halo" region
1916        2) zeroing needs to be done *before* reading pickup info
1917           and the pickup call might or might not happen in any
1918           particular run
1919      - this needs an overhaul for R2
1920    o cleanup verification/*/code/GMREDI_OPTIONS.h
1921    o cleanup testreport
1922    
1923    checkpoint51o_post
1924    o bringing AD-related verif's up to date with genmake2
1925      - carbon/
1926      - global_ocean.90x40x15/
1927      - hs.94.1x64x5/
1928      - (front_relax/ )
1929    o (more) consistent directory structure for AD-related verif.'s
1930    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1931    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1932    o bug fix in find_alpha.F for MDJWF:
1933      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1934        change rho -> rho-rhoConst
1935      - replace call find_rho to find_rhonum
1936    o initialisation of rFlx extended to full array (required by TAF)
1937      and shifted to thermodynamics
1938    o removed PTRACERS.h in ptracers routine
1939    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1940    o Correcting initialisations for fVerU, fVerV.
1941    o helping TAF to recognize dependency on kUp for
1942      fVerU, fVerV
1943    o Replacing delZ by delR in pkg/ctrl/
1944    checkpoint51o_pre
1945    
1946    o undid all of cp51 pending some cleanups and discussion
1947    o added the [#include "AD_CONFIG.h"] statement to all files that need
1948       it for adjoint/tl #defines
1949     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1950     o removed tools/genmake since it no longer works
1951    
1952    checkpoint51n_post
1953    o modifications to make FREEZE flux visible to pkg/kpp
1954      - moved surfaceTendencyTice from pkg/seaice to main code
1955      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1956      - subroutine FREEZE now limits only surface temperature
1957        (this means new output.txt for global_ocean.90x40x15,
1958         global_ocean.cs32x15, and global_with_exf)
1959    o added surface flux output variables to TIMEAVE_STATVARS
1960    
1961    checkpoint51n_pre
1962    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1963    o added [#include "AD_CONFIG.h"] to all files that use the following
1964      defines:
1965      - ALLOW_ADJOINT_RUN
1966      - ALLOW_TANGENTLINEAR_RUN
1967      - ALLOW_ECCO_OPTIMIZATION
1968    
1969    checkpoint51m_post
1970    o incorporating changes to get TAMC/TAF working in genmake2
1971      - added new TAMC/TAF targets to the Makefile
1972      - various cleanups related to package handling
1973      - these changes should have no impact on the forward model
1974    
1975    checkpoint51l_post
1976    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1977     - faster algorithm for cal_addtime.F
1978     - higher precision arithmetic, where needed
1979     - pkg/exf *startdate variables changed from calendar date to
1980       model integration time
1981    
1982    checkpoint51l_pre
1983    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1984    o enable to apply restoring on S & T only in a latitude band.
1985    o update output (external_forcing_surf modif. change truncation errors)
1986       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1987    
1988    checkpoint51k_post
1989    o change default to: useNHMTerms=.FALSE.
1990     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1991       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1992     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1993        exp1, ideal_2D_oce
1994     - change data file of oceanic exp (leave the results unchanged for now)
1995       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1996    o set gravitySign automatically according to the vertical coordinate used
1997      (and change sign: back to "logical" value: +1 when R increases downward)
1998    o added an include barrier to the default CPP_OPTIONS.h and
1999      removed the #include "PACKAGES_CONFIG.h" from it
2000    o fix a bug in mom_fluxform (from chk51j_post)
2001    
2002    checkpoint51j_post
2003    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2004    o adjusted some flow directives (dynamics, thermodynamics)
2005    o added cubed-sphere case to test cost function
2006    o heckpoint_lev?_directives.h now include
2007      pkg-specific directives, whenever those are enabled.
2008    o Moving pkg-specific flow directives to corresponding pkg
2009      Moving pkg-specific differentiation list to corresponding pkg
2010      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2011      ---> conventions are
2012           - pkg_ad.flow
2013           - pkg_ad_diff.list
2014           - pkg_ad_check_lev?_dir.h
2015    
2016    checkpoint51i_post
2017    o merge of the branch-genmake2
2018      - knowingly breaks the older genmake
2019      - automatic generation of all ALLOW_${PKG_NAME} defines
2020      - new testreport supersedes older testscript
2021    o large number of package inclusion and header cleanups
2022    checkpoint51i_pre
2023    
2024    o new output for adjoin of global ocean vector invariant
2025    o fix for checkpoint of thermodynamic seaice and bulk_force
2026    o Steph gchem various cleanups
2027    
2028    checkpoint 51h_pre
2029    o fixed some single quotes
2030    o modify gchem pkg to be more versatile
2031    o modifications to clean up dic pkg
2032    o add pkg/cfc
2033    
2034    checkpoint51g_post
2035    o provide links for ARPACK and ADM*TLM
2036    o start removing verification/vero/
2037    o update AD-related stuff
2038      (in particular some IF-statements in model/src/ routines)
2039    o adding to verification/global_ocean.90x40x15/ adjoint of
2040      vector invariant setup
2041    
2042    checkpoint51f_post
2043    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2044    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2045      of tracer Green's fucntions for ocean inversion project.
2046    
2047    checkpoint51f_pre
2048    o Added on-the-fly spatial interpolation capability
2049        "USE_EXF_INTERPOLATION" to pkg/exf.
2050      - This is a temporary Cartesian-grid hack until
2051        the super-duper ESMF coupler becomes available.
2052      - See verification/global_with_exf/README for usage example.
2053      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2054        flags and modified pkg/seaice accordingly.
2055    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2056        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2057        non-local transport term.
2058    
2059    checkpoint51e_post
2060    o pkg/mom_vecinv:
2061      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2062      - add time-ave diagnostic of vorticity advection.
2063    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2064    o atmospheric geopotential: - include water vapor effect;
2065                                - use p^kappa in p* scaling.
2066    o land pkg: read initial state from files.
2067    o AIM : add stratospheric drag in the upper level
2068    
2069    checkpoint51d_post
2070    o change function ILNBLNK (=> last non-blank char.) to return zero
2071      (instead of the string length) when the string. char is empty
2072    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2073    o modif's to restore TAMC compatibility
2074      - avoid "_d" constructs in PARAMETER declarations
2075      - avoid interrupting lines by comment lines
2076    o Use cluster local disks for purely local I/O
2077      vs. globally visible disks needed for ctrl stuff
2078      (merged from ecco-branch)
2079      - new active_file_loc... and mdsio_..._loc routines
2080      - affected packages: autodiff, ctrl, grdchk, mdsio
2081    
2082    checkpoint51c_post
2083    o introducing integer flag debugLevel
2084      - debLevZero: suppress all output
2085      - debLevA: standard
2086      - debLevB: equivalent to current debugMode=.TRUE.
2087    o introducing pathname variable mdsioLocalDir for mdsio
2088      that can be specified at runtime
2089      (relevant for cluster I/O to local disk)
2090    `
2091    >>>checkpoint51b_post
2092    adjoint of ptracers
2093    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2094    o extended state in checkpoint_lev?, etc.
2095    o alternative ctrl/cost with tr1 or ptracer
2096    o new comlev1_bibj_ptracers
2097    o new ptracers.flow
2098    o made ptracers_forcing same as external_forcing_s
2099    o added verification for adjoint with ptracers
2100      - adm. grdchk fail so far
2101      - tlm. grdchk OK
2102      - checked tapelev/comlev recomputations: OK
2103    <<<checkpoint51b_pre
2104    
2105    checkpoint51a_post
2106    o added code for biogeochemistry package
2107      - new pkgs: dic, gchem
2108      - new subroutine in ptracers
2109    o modify code for biogeo packages
2110      - in model/src and pkg/ptracers
2111    
2112    checkpoint51
2113    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2114      - autodiff, ctrl, exf, grdchk, seaice
2115      kept separate packages
2116      - cost, ecco, obcs
2117    o updating verification/internal_wave, verification/lab_sea
2118      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2119    
2120    checkpoint50i_post
2121    o Preparing next differentiable checkpoint and sync
2122      of MAIN vs. ecco-branch
2123      - 1st step: this one is differentiable
2124      - 2nd step: next(! not this) checkpoint will have updated packages
2125                  from ecco-branch)
2126    
2127    checkpoint50h_post
2128    o new package "land": provide surface BC for AIM.
2129    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2130    o AIM: use true log-P extrapolation for near surface temp (= as in
2131        F.Molteni paper) ; update aim.5l_cs output.
2132    o New variable in PARM03 for more flexible pickups
2133    o somewhat cleaned package initialisation sequence for
2134      ctrl/ cost/ ecco/ in packages_... routines
2135    
2136    checkpoint50g_post
2137    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2138      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2139      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2140        made the default because of faster convergence than ADI
2141    
2142    checkpoint50f_post
2143    o exf totally restructured
2144      - replaced all exf_set_ routines by one generic exf_set_gen.F
2145        and made sure it's still differentiable
2146      - split exf_getffields.F into new exf_bulkformulae.F
2147      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2148      - updated adjoint/makefile and relevant verif. accordingly
2149    
2150    checkpoint50f_pre
2151     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2152          + change Evap over land. (update aim.5l_cs output)
2153     o added missing .cvsignores and made uniform across expts
2154     o changed configuration of tidal_basin_2d expt
2155     o added pkg/debug functions for tracing code in fatal crashes
2156     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2157     o new fn in pkg/monitor to stop model if solution grows too big
2158     o removed lots of single quotes from comments
2159    
2160    checkpoint50e_post
2161    o make KPP work with PTRACERS
2162     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2163       nearly a copy of kpp_transport_s
2164     - there is no analogue to SurfaceTendencyS, so I have to use
2165       gPtr(of the surface layer) instead
2166    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2167    checkpoint50e_pre
2168    
2169    checkpoint50d_post
2170    o change kpp output from multiple-record state files to single-record state
2171      files analogous to write_state.F
2172    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2173      analogous to the cg2d-related output.
2174    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2175      so that writing to internal file fn (with length 512) fails.
2176    checkpoint50d_pre
2177    
2178    checkpoint50c_post
2179    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2180    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2181    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2182    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2183    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2184    
2185    checkpoint50c_pre
2186    Merging from release1_p13:
2187    o bug fix for pkg/seaice dynamic solver
2188    o Added SEAICE_initialHEFF to pkg/seaice
2189    
2190    checkpoint50b_post
2191    o store u*,v* in gU,V instead of in guNm1,gvNm1
2192    o in order to put the momForcing out of the Adams-Bashforth:
2193      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2194      to timestep.F
2195    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2196    o re-generate output for highly sensitive test-exp:
2197       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2198    
2199    checkpoint50b_pre
2200    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2201    o corrected CPP option mismatch in exf_Bulk... functions for case
2202      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2203    
2204    checkpoint50a_post
2205    o Bug fix for merging between c50 and KPP.
2206      ikey was passed from thermodynamics to kpp_calc via
2207      common block rather than being recomputed in kpp_calc,
2208      in contradiction with new key itdkey.
2209      New key ikppkey created, and tamc.h headers updated.
2210    
2211    checkpoint50
2212    - 2nd step of merge with ecco-branch:
2213      merge changes in ecco-branch back into main trunk
2214    - bug fix in find_alpha
2215    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2216    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2217    - merged some sliced AD support routines
2218    
2219    checkpoint49
2220    merged from ecco-branch:
2221    o exf:
2222      - Enable initialisation of forcing fields to constant
2223        (runtime) values.
2224      - in exf_getffields.F
2225        Reduce i-/j-loop to interior domain, discarding overlaps.
2226        That also fixes wrong TAF-key computations for key_1, key_2
2227        with bulf formulae.
2228      - exf_init.F modify #ifdef for exf_init_evap
2229      - exf_getffieldrec.F, ctrl_getrec.F
2230        The following INT-usages are not safe:
2231          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2232          fldcount = int(fldsecs/fldperiod) + 1
2233        and were modified.
2234    o autodiff: checkpoint_lev...
2235      - updated storing for bulk formulae (some arrays were missing)
2236      - added state for seaice package
2237      - synchronized with main branch
2238    o DIVA:
2239      Modif.s in
2240      - the_main_loop.F
2241      - the_model_main.F
2242      and added cost_final_restore.F cost_final_store.F
2243      o With these changes, it is possible to fully separate
2244        the first forward run to compute the cost function (mdthe_main_loop)
2245        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2246        into separate model executions.
2247        This enables better tuning of DIVA to given queue sizes.
2248      o Loss of cost function value in consecutive DIVA runs is
2249        fixed by storing to 'costfinal' file.
2250      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2251        beginning/end of adjoint integration is accounted for.
2252      The current changes apply to TAF-1.4.26.
2253      TAF has one remaining bug, requiring one manual change
2254      (see MITgcm manual).
2255    o cal: synchronized between MAIN and ecco-branch
2256    
2257    checkpoint48i_post
2258    o Changes to restore differentiability of code w.r.t. previous tag
2259      (mostly adding new routines to make list and replacing
2260      pressure by totPhiHyd).
2261    o Updated and merged grdchk package
2262      - has both ADM and TLM checks
2263      - works for single- and multi-proc.
2264      - output cleaned
2265      - worked successfully for parallel DIVA
2266    o genmake:
2267      - Adding -platform=SP4
2268      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2269    o Modif. for DIVA:
2270      ctrl_unpack should not be called in intermediate DIVA interval.
2271      (similar thing would apply for active files such as
2272      tbar, sbar, psbar, which should not be reinitialised;
2273      only relevant for ecco-branch)
2274    
2275    checkpoint48h_post
2276    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2277    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2278    o Added SEAICE_initialHEFF to pkg/seaice
2279    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2280    
2281    checkpoint48g_post
2282    --- EOS:
2283    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2284      store total Potential in totPhyHyd for diagnostics & EOS.
2285    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2286    --- Pressure/geopotential gradient:
2287    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2288    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2289      ( changes results of global_ocean_pressure )
2290    o NLFS + z-coord.: add eta*Rho' contribution.
2291    o accurate phiHyd when using interface-W at the middle between 2 centers
2292     ( changes results of ideal_2D_oce )
2293    o includes r* 2nd term in potential gradient.
2294    
2295    checkpoint48f_post
2296    Merging from release1_p12:
2297    o Modifications for using pkg/exf with pkg/seaice
2298      - improved description of the various forcing configurations
2299      - added basic radiation bulk formulae to pkg/exf
2300      - units/sign fix for evap computation in exf_getffields.F
2301      - updated verification/global_with_exf/results/output.txt
2302    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2303      (SBO) core products, including oceanic mass, center-of-mass,
2304      angular, and bottom pressure (see pkg/sbo/README.sbo).
2305    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2306      to avoid negative values in shallow regions.
2307      - updated verification/natl_box/results/output.txt
2308      - updated verification/lab_sea/results/output.txt
2309    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2310    o Added useSingleCpuIO option (see PARAMS.h).
2311    o Updated useSingleCpuIO option in mdsio_writefield.F to
2312      work with multi-field files, e.g., for single-file pickup.
2313    o pkg/seaice:
2314      - bug fix in growth.F: QNET for no shortwave case
2315      - added HeffFile for specifying initial sea-ice thickness
2316      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2317    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2318      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2319    o pkg/seaice:
2320      - adjoint-friendly modifications
2321      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2322    
2323    checkpoint48e_post
2324    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2325    o dynamics: change definition of computational domain & adapt mom_fluxform
2326      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2327    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2328        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2329        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2330        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2331        inverted_barometer solid-body.cs-32x32x1
2332      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2333    
2334    checkpoint48d_post
2335    o in preparation for r*:
2336     a) use pre-computed gradient of hydrostatic potential:
2337        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2338     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2339        => affects results of glob_oce_pressure (different truncation error)  
2340      update output.txt of ideal_2D_oce & global_ocean_pressure
2341    
2342    checkpoint48d_pre
2343    o in preparation for r*:
2344      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2345      pass the 2 comp. of the grad. as arguments to momentum S/R.
2346      but for the moment, only used if it does not change the results.
2347    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2348    
2349    checkpoint48c_post
2350    Modifications in treatment of initial flux forcing controls
2351    to avoid extra storing of flux fields.
2352    
2353    checkpoint48c_pre
2354    o Added tidal_basin_2d experiment (currently 1D!)
2355    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2356    
2357    checkpoint48b_post
2358    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2359     (modification to pressure gradient not yet implemented)
2360    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2361      (for U & V) that are used for vertical advection of momentum.
2362    
2363    checkpoint48a_post
2364    o In preparation for r*, use temp. array to compute vertical transport
2365       in flux-form momentum pkg. => change results of few test-exp.
2366      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2367                        lab_sea, natl_box & plume_on_slope
2368    
2369    checkpoint48
2370    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2371    
2372    checkpoint47j_post
2373    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2374    o moved adexch from forward_step to addummy_in_stepping
2375    o added exch in ctrl_map_...
2376    o aveFreq.=0. at end of cost_final to avoid overwrite in
2377      reverse checkpointing loop
2378    o Yet more changes in gmredi:
2379      * adgmredi_calc_tensor
2380        avoiding all recomputation of gmredi_slope_limit
2381      * adgmredi_x/y/rtransport
2382        added flag for excessive storing to avoid recomp. of
2383        u/v/rtans, dTdx/y/z
2384        -> this is not really necessary and very memory-consuming
2385      * adgmredi_slope_psi:
2386        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2387      * gmredi_slope_limit
2388        re-activated full calculation of taperfct for case 'ac02'
2389    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2390    
2391    checkpoint47i_post
2392    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2393    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2394      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2395    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2396    o gmredi: fix few bugs.
2397    
2398    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2399    This will be a good checkpoint to plug into the ecco-branch.
2400    o few modif.'s to get latest version adjointed
2401      (mainly kick out code in ini_linear_phisurf)
2402    o modif's to run adjoint with exactConserv
2403    o case GM_BOLUS_ADVEC should be cleaned
2404      S/R gmredi_slope_psi should be cleaned
2405    o verification/carbon now has exactConserv=.TRUE.
2406    
2407    checkpoint47g_post
2408    o time-average AIM output: becomes independent from statvars time-average
2409      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2410    o After TAF bug fix:
2411      Tested adjoint of gmredi package.
2412      Tests were done with checkpoint47 rather than with latest
2413      checkpoint47f_post since the latter is broken for the adjoint
2414      verification/carbon/ contains both ADM and TLM gradient checks.
2415    Here they are, before they get changed/lost/stolen.
2416    Mostly modif.'s to fix numerical sensitivities.
2417    Gradient checks OK for
2418    - GM_taper_scheme:
2419      * clipping
2420      * ac02
2421      * linear
2422      * glw91
2423      * dm95
2424      * ldd97
2425    - GMREDI_OPTIONS:
2426      * GM_VISBECK_VARIABLE_K
2427      * GM_NON_UNITY_DIAGONAL
2428      * GM_EXTRA_DIAGONAL
2429      * GM_BOLUS_ADVEC
2430    in conjunction with data.gmredi parameters to be checked in
2431    in a few minutes under verification/carbon/code/
2432    
2433    checkpoint47f_post
2434    Merging from release1_p10:
2435    o modifications for using pkg/exf with pkg/seaice
2436      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2437        and SEAICE_EXTERNAL_FLUXES
2438      - pkg/exf CPP options EXF_READ_EVAP and
2439        EXF_NO_BULK_COMPUTATIONS
2440      - usage examples are Experiments 8 and 9 in
2441        verification/lab_sea/README
2442      - verification/lab_sea default experiment now uses
2443        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2444    
2445    checkpoint47e_post
2446    o created a tag prior to creating a branch
2447    
2448    checkpoint47d_post
2449    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2450      at the bottom boundary had an erroneous half slip boundary condition
2451    o added bottom drag and no slip boundary condition capabilities to
2452      oceanic pressure coordinates code
2453    o added new verification experiment global_ocean_pressure, this experiment is
2454      also described in the tutorial section of the manual
2455    checkpoint47d_pre
2456    
2457    checkpoint47c_post
2458    o Added a verification experiment for a global cubed-sphere ocean run
2459      -  verification/global_ocean.cubed32x32x30
2460      -  uses pkg/therm_seaice and pkg/bulk_forcing
2461    
2462    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2463    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2464      when using P-coordinate; only implemented for atmospheric config.
2465    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2466      NOTES: requires option NONLIN_FRSURF to be "#define".
2467    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2468    
2469    checkpoint47b_post
2470    Merging from release1_p9:
2471    o pkg/seaice
2472      - removed GOTO's and added taf directives
2473      - double precision constants to reduce the g77 (Linux)
2474        to F77 (SGI) differences reported in release1_p8
2475    o tools/genmake
2476      - added SGI options
2477    o verification/testscript
2478      - updated to that of checkpoint47a_post
2479    o verification/global_ocean.90x40x15/input/eedata
2480      - modified for SGI f77 compatibility
2481    o verification/lab_sea
2482      - added description of sea-ice model
2483      - added missing matlab routines
2484      - added test of thermodynamics parallelization
2485    
2486    checkpoint47a_post
2487    o new pkg: aim_v23
2488     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2489       for now, keep the same surface forcing as before.
2490     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2491     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2492     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2493    o add diagnostic of surface correction term in monitor output
2494    
2495    o bulk_force and therm_seaice
2496    - Two packages:  bulk_force (Bulk forcing)
2497      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2498    - Earlier integration from Stephaine Dutkiewicz
2499      and Patrick Heimbach.
2500    - Two ifdef statements for compile time,
2501       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2502    
2503    checkpoint47
2504    differentiable version of checkpoint46n_post
2505    o bug fix in quasihydrostaticterms
2506    o * "clean" adjoint code (in terms of extensive recomputations)
2507        can now be obtained for all GMREDI options (i.e. for
2508        - GM_VISBECK_VARIABLE_K
2509        - GM_NON_UNITY_DIAGONAL
2510        - GM_EXTRA_DIAGONAL
2511        - GM_BOLUS_ADVEC )
2512      * However, wrong gradient check problem remains unsolved.
2513      * New CPP options have been introduced for different
2514        tapering schemes
2515    o external_fields_load now part of differentiation list
2516    o pressure needs multiple storing;
2517      would be nice to have store_pressure at beginning or
2518      end of forward_step, e.g. by having phiHyd global (5-dim.)
2519      (NB: pressure is needed for certain cases in find_rho,
2520      which is also invoked through convective_adjustment).
2521    o recomputations in find_rho for cases
2522     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2523    o #define ATMOSPHERIC_LOADING should be differentiable
2524    o ini_forcing shifted to begining of initialise_varia
2525    o Incorporating QNVS line search routines into MITgcm
2526      (this is separate code, and therefore not under pkg)
2527      lsopt/, optim/
2528    o Updated verification/carbon/
2529      - #define GM_VISBECK_VARIABLE_K
2530      - GM_taper_scheme    = 'ldd97'    
2531    
2532    checkpoint46n_post
2533    Merging from release1_p8:
2534    o verification/natl_box:
2535      updating new external_fields_load routine
2536    o New package: pkg/seaice
2537      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2538      The sea-ice code is based on Hibler (1979-1980).
2539      Two sea-ice dynamic solvers, ADI and LSR, are included.
2540      In addition to computing prognostic sea-ice variables and diagnosing
2541      the forcing/external data fields that drive the ocean model,
2542      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2543      The implied surface heat flux is then stored in variable
2544      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2545      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2546      non-local transport term.  Because this call precedes model
2547      thermodynamics, temperature under sea-ice may not be "exactly" at
2548      the freezing point by the time theta is dumped or time-averaged.
2549      N.B.: fairly large differences in accuracy occur across
2550            different platforms/compilers; comparison between
2551            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2552            generated output gives:
2553       T           S           U           V
2554      C D M    c        m  s        m  s        m  s        m  s
2555      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2556      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2557      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2558    
2559      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2560    o GAD:
2561      - generated new common blocks to account for call of
2562        same gad routines with differing traceridentities
2563        (needed to modify tracerIdentity indices in GAD.h)
2564      - generated separate common blocks for case useCubedSphereExchange
2565        (Department of Futurology)
2566      - parameter lists to gmredi_?transport: added tracerIdentity
2567      - added new key indices to tamc.h
2568    o external_fields_load:
2569      - added this routine to TAF list
2570      - needed to make some common blocks global and additional storing
2571        along the same lines as exf package (checkpoint_lev?_directives.h)
2572    o exf:
2573      updated external forcing package
2574      - bug fixes carried over from ecco-branch
2575        (missing OBCS_OPTIONS.h in two routines)
2576      - enable easy to use "no forcing".
2577      - added exf I/O for atmospheric loading
2578      - added exf I/O for runoff data
2579      - transfered scaling between exf <-> MITgcm to exf namelist
2580    o Adding new verification experiment global_with_exf.
2581      This verification experiment is almost identical to the
2582      global_ocean.90x40x15 experiment, except that it uses
2583      the exf (and cal) package instead of the
2584      external_fields_load routine (cf README file).
2585    
2586    checkpoint46m_post
2587    o modified testscript to return -- when there are no lines of "%MON" output
2588    o added new flag "quasiHydrostatic" for QH mode
2589      and new routine quasihydrostaticterms()
2590    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2591      New routine: mom_u_coriolis_nh()
2592    o fixed sign of non-hydrostatic metric terms in u and v equations.
2593      Depend on correct sign of gravitySign.
2594    o added work.pc* to .cvsignore in aim directories using ifc
2595    o introduced flag for controllin non-hydrostatic metric terms
2596    o removed gravitySign from PARM04
2597    o switched to g77/ifc from pgf77 in aim experiments
2598    
2599    checkpoint46l_post
2600    o made convective adjustment work with pressure coordinates:
2601     - changed the direction of k-loop in convective_adjustment.F for the
2602       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2603     - adjusted the reference pressure k-index in convective_adjustment.F
2604     - adjusted the convection condition in convect.F (in analogy to
2605       calc_ivdc.F)
2606     - convective_adjustment no longer computes anything on the halos
2607     - removed the warnings about negative salinity from find_rho.F and
2608       find_alpha.F; instead the new routine look_for_neg_salinity, called
2609       at the beginning of find_rho, find_alpha, and find_beta, does a
2610       check of the entire slice, if CPP-option
2611       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2612    checkpoint46l_pre
2613    
2614    checkpoint46k_post
2615    o fixed the verification/global_ocean.90x40x15 experiment:
2616     - new bathymetry (the world according to A., JMC, and M.)
2617     - new initial fields and forcing fields (*.bin files)
2618     - new POLY3.COEFFS (for the next release one should switch to a full
2619       equation of state: JMD95P or MDJWF)
2620     - fixed several errors and redundancies in the data file
2621     - experiment uses looped cells
2622     - added matlab directory with diagnostic scripts for plotting of output
2623    
2624    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2625     - read AIM physics parameters from a file (data.aimphys)
2626     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2627    
2628    checkpoint46j_post
2629    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2630    o move wVel computation at the end of the time step, in S/R integr_continuity
2631    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2632    o update timeave pkg for wVel diagnostic.
2633    checkpoint46j_pre
2634    
2635    checkpoint46i_post
2636    o Clean up AIM package (and keep the results unchanged):
2637      include CPP_OPTION and use IMPLICT NONE in all routines ;
2638      declare all the variables _RL ; use _d 0 for all numerical constants.
2639      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2640    
2641    checkpoint46h_post
2642    o cleaned up the use of rhoNil and rhoConst.
2643      - rhoNil should only appear in the LINEAR equation of state, everywhere
2644        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2645        and the dynamical equations are all divided by rhoConst
2646    o introduced new parameter rhoConstFresh, a reference density of fresh
2647      water, to remove the fresh water flux's dependence on rhoNil. The default
2648      value is 999.8 kg/m^3
2649    o cleanup up external_forcing.F and external_forcing_surf.F
2650      - can now be used by both OCEANIC and OCEANICP
2651    checkpoint46h_pre
2652    
2653     Added code to convert surface volume flux (fresh water) into
2654     a mass flux when using P coordinates in the ocean (OCEANICP).
2655     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2656    
2657    checkpoint46g_post
2658    o Include a new diagnostic variable phiHydLow for the ocean model
2659      - in z-coordinates, it is the bottom pressure anomaly
2660      - in p-coordinates, it is the sea surface elevation
2661      - in both cases, these variable have global drift, reflecting the mass
2662        drift in z-coordinates and the volume drift in p-coordinates
2663      - included time averaging for phiHydLow, be aware of the drift!
2664    o depth-dependent computation of Bo_surf for pressure coordinates
2665      in the ocean (buoyancyRelation='OCEANICP')
2666      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2667        Theta, Salinity, and Pressure in the parameter list. This routine is
2668        presently contained in find_rho.F. This routine does not give the
2669        correct density for 'POLY3', which would be a z-dependent reference
2670        density.
2671    o cleaned up find_rho
2672      - removed obsolete 'eqn' from the parameter list.
2673    o added two new verification experiments: gop and goz
2674      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2675    checkpoint46g_pre
2676    
2677    checkpoint46f_post
2678    o Enable tangent linear (forward mode) gradient checks:
2679      - extended active file handling to g_... files
2680      - added TANGENT_SIMULATION to theSimulationMode
2681      - extended grdchk package accordingly
2682    o added tangent linear setup in verification/carbon/code_ftl
2683    o added adjoint setup in verification/front_relax/code_ad
2684    
2685    checkpoint46e_post
2686    o Added new equation of state -> MDJWF
2687      - EOS of McDougall et al., 2002, JAOT, submitted
2688      - caveat: the equation of state is only valid for a smaller (more
2689        realistic?) range of values than JMD95P/Z and UNESCO
2690      - added masks to the calculation of pressure in store_pressure
2691      - added more check values for density in check_eos (ini_eos.F), some of
2692        the old check values are out of the range of the MDJWF-eos, so don't
2693        expect perfect matches for those
2694    checkpoint46e_pre
2695    
2696    checkpoint46d_post
2697    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2698      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2699      case of pressure coordinates. eosType='JMD95Z' in
2700      combination with buoyancyRelation='OCEANICP' now causes an error.
2701    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2702      in find_alpha/beta.
2703    checkpoint46d_pre
2704    
2705    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2706      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2707    
2708    checkpoint46c_post
2709    o Changes necessary for ocean in p-coordinates
2710     -  Added new buoyancy relation = 'OCEANICP'
2711     -  Added new parameters = gravitySign (this used to be contained inside
2712        the factor dRdZ which I added when we first switched to R coordinates).
2713     X GM/Redi is not compatible (yet)
2714     X bottom drag and no-slip need to be debugged.
2715    checkpoint46c_pre
2716    
2717    checkpoint46b_post
2718    o Added new equation of state -> JMD95Z and JMD95P
2719      - EOS of Jackett and McDougall, 1995, JAOT
2720      - moved all EOS parameters into EOS.h
2721      - new routines ini_eos.F, store_pressure.F
2722    o Added UNESCO EOS, but not recommended because it requires
2723      in-situ temperature (see JMD95)
2724    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2725      unesco.f to be used with POLY3
2726    checkpoint46b_pre
2727    
2728    checkpoint46a_post
2729    o Added (atmospheric) pressure loading
2730      - new field in FFIELDS.h, etc...
2731      - new cpp flag ATMOSPHERIC_LOADING
2732    o Changed hFacC to _hFacC in calc_phi_hyd.F
2733    o Added SHORTWAVE_HEATING to some files for consistency
2734    checkpoint46a_pre
2735    
2736    checkpoint46
2737    further merges from release1_p5
2738    o new ctrl package
2739      - adopted from ECCO environment to enable optimization
2740      - added Eliassen Palm fluxes to controls
2741    o added Eliassen Palm flux controls to gradient check package
2742    o cost package
2743      - Compatible with new ctrl package
2744      - added Eliassen Palm cost hooks
2745      - modif's of existing cost functions
2746    o Adjoint-related bug fixes in kpp:
2747      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2748      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2749    o autodiff package
2750      - flow directives:
2751        + new for S/R do_the_model_io
2752        + enhanced for S/R checkpoint
2753        + new gmredi.flow
2754      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2755        disable adcommon.h/g_common.h by default.
2756      - fixed problem for adjoint of global_max
2757    o modified verification/carbon/
2758    o New setup for adjoint of global_ocean
2759    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2760    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2761    o incorporated hooks for sponge layer code (external_forcing.F)
2762    
2763    checkpoint45d_post
2764    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2765    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2766      (affects plume_on_slope "cg2d" output)
2767    o add new parameter deltaTfreesurf for free-surface time stepping
2768    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2769    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2770    o change phiMin in exp1 (to agree with documentation)
2771    o add new flags:
2772     - T,S forcing inside/outside Adams-Bashforth
2773     - turn off temp,salt advection and/or forcing
2774     - for each tracer, define internal flag for multiDimAdvection & A-B
2775    o monitor: change definition of KE to check conservation of Energy
2776    
2777    checkpoint45c_post
2778    o Removed f90 comments ("!")
2779    o Modified initialisations to enable exf package for MITgcm
2780      (without invoking ECCO_PACKAGE).
2781    o modifications to gradient check package (Martin Losch)
2782      - enable centered differences
2783      - modified format of standard output
2784    
2785    checkpoint45b_post
2786    o cleaned exchange calls in cg2d
2787    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2788    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2789      to configure barotropic setup (Martin Losch)
2790    o moved some initialisations within bi,bj loop in dynamics
2791      (TAF flow dependency)
2792    o in initialise_varia, moved call packages_init_variables
2793      before convective_adjustment_init
2794      (corresponding adjustment of TAF tape initialisation).
2795    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2796    
2797    checkpoint45a_post
2798    o compute Rho over the whole domain (extend iMin,jMin indices)
2799    o specific exchange for X-slice domain (case Ny=1)
2800    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2801    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2802    
2803    checkpoint44h_post = checkpoint45
2804    o Fix to restore differentiability:
2805      place at which packages_init_variables is called in
2806      initialise_varia is crucial for reverse control flow.
2807    o modifications in GMRedi to enable stable adjoint
2808      (corresponding modif's in thermodynamics, dynamics)
2809    o added missing hook for sponge layer code in external_forcing
2810    o modified test cost functions
2811    o storing in gad_advection (plus removal of write(0,*)!
2812    o missing headers TR1.h added in convective_adjustment routines
2813    o errorMessageUnit set non-equal zero in eeboot
2814      (conflict on some platforms, e.g. IBM SP3)
2815    o modified carbon verif.
2816    
2817    checkpoint44h_pre
2818    o vertical grid option: allow to put the Interface at the middle between
2819      2 cell-centers ; replace delZ in pkg/kpp by drF.
2820    o GM Advective form: Tracers are advected using the residual transport (=
2821      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2822    
2823    checkpoint44g_post
2824    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2825      results) ; ifdef missing in thermodynamics.F
2826    
2827    checkpoint44f_pre,checkpoint44f_post
2828    o added PTRACERS package
2829      This allows an arbitrary number of passive tracers to be integrated
2830      forward simultaneously with the dynamicaly model.
2831      + Implemented so far:
2832        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2833        - I/O and checkpointing
2834        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2835      + Not implemented so far:
2836        - KPP
2837        - OBCS
2838      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2839        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2840        line in data.pkg.
2841      + This package is disabled by default since it increases storage.
2842    
2843    
2844    o testscript: added -cleanup option
2845    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2846                 b) enable to filter 2D fields.
2847    
2848    checkpoint44e_pre,post
2849    o re-wrote convective adjustment to use pre-calculated weights
2850      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2851      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2852      Original calls to convect() still in place.
2853    
2854    chkpt44d_pre,post
2855    o added missing EXCLUDE_MONITOR flags
2856    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2857      (incompatible typ in MIN/MAX expressions caused problems
2858      on IBM SP3)
2859    o in genmake added variable MAKEDEPEND
2860      plus resetting for case SunOS
2861    o added timer_stats.c routine for IBM SP3
2862    o removed variables in dynamics
2863    !!! I forgot to create tag chkpt44d_pre !!!
2864    !!! But chkpt44d_pre = chkpt44c_post    !!!
2865    
2866    o real fresh water flux implemented with non-linear free-surface.
2867    
2868    chkpt44c_pre,post
2869    o few fix (mask in shap_s2, EmPmR in external_field_load,
2870      USE_NATURAL_BCS in solve_for_P);
2871    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2872    
2873    checkpoint44b_pre/_post
2874    o merge of relevant stuff from the ecco-branch:
2875      - genmake: removed $S64 overwrite for case SunOS
2876      - pkg/exf: update and corrections for field swapping and obcs
2877      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2878                  harmonized between ECCO and MITgcm
2879      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2880                      updated checkpointing_lev... lists for obcs
2881      - model/src: minor changes in forward_step, plot_field
2882                   added directive for divided adjoint in the_main_loop
2883      - pkg/mdsio: added mdsio_gl_slice
2884    
2885    o check parameters & config (chkpt44a_pre,post)
2886    o OBC and NonLin_FrSurf.
2887    
2888    checkpoint44
2889    o fix bug in mom_vi_del2uv
2890    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2891    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2892    o update AIM experiments (NCEP input files)
2893    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2894    o added some stuff for AD
2895    
2896    checkpoint43
2897    o added two new advection tests
2898    o added global 4x4 degree ocean test
2899    o added test of H&S94 with free surface on cube
2900    o some final mods for gradient check, adjoint,...
2901    
2902    checkpoint42
2903      Fixed AD-related problems:
2904    o Store directives up-to-date with re-arranged Adams-Bashforth
2905      (mainly thermodynamics.F)
2906    o New store directives for multi-dim. advection schemes
2907      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2908      * new common block and key passkey
2909      (mainly gad_advection.F)
2910    o Modified store directives for split of dynamics/thermodynamics
2911      for the case ALLOW_KPP
2912    o Cleaned argument list for timestep_tracer.F
2913    
2914    checkpoint41
2915    o re-formatted/added comments in prologues of key subroutines
2916      to work with protex
2917    
2918    checkpoint40
2919    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2920    o added FLT (floats) package from Arne along with demo. experiment
2921    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2922      implementation of forward-in-time forcing terms
2923    o more mods for non-linear free-surface including new variable
2924    o modified multi-dim method to work on cube
2925    o bug fix in KPP (from DM)
2926    
2927    checkpoint40pre9
2928    o added DST advection schemes
2929    o fix MPI bug on SGI's
2930    o modifications for non-linear free-surface
2931    o fixed conditionals for fixed flow/passive tracer only mode
2932    o added tension/strain form of stress tensor
2933    o changes to commenting of arguments for TAF/TAMC
2934    o added/updated many matlab scripts
2935    o added multi-dimensional advection method for tracers
2936      
2937    checkpoint40pre8
2938    o new package rw/
2939      Added method for dumping intermediate local arrays:
2940      mdsio_writetile - same as mdsio_writefield except works from inside
2941                        bi,bj loop
2942      mdsio_writelocal - same as mdsio_writetile except works for local
2943                         arrays
2944      write_local_r? - higher-level wrapper for mdsio_writelocal
2945      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2946      Example given at end of mom_vecinv.F that dumps some local arrays.
2947    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2948      control flux-form versus vector invariant code.
2949      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2950      or genmake -DISABLE ...
2951    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2952      (additional storing is now needed for case vecinv;
2953      currently nothing implemented to switch this storing off
2954      in case fluxform is used since no CPP flag available).
2955    
2956    checkpoint40pre7
2957    o bug fix in dynamics.F
2958      calc_viscosity called before k=1,Nr loop.
2959    o added some #ifdef's ALLOW_PASSIVE_TRACER
2960    o cleaned initialisations in ctrl_map_ini
2961      related to TAF
2962    
2963    checkpoint40pre6
2964    o split dynamics into thermodynamics & dynamics
2965    o corresponding split of calc_diffusivity into
2966      calc_diffusivity, calc_viscosity
2967      (kpp_calc_diff, kpp_calc_visc).
2968    o Added diffkr, kapgm to control variables
2969    o bug fix in gmredi_slope_limit for ldd97
2970    
2971    checkpoint40pre5
2972    o proper initialization of Adams-Bashforth time stepping
2973      + uses forward step for very first step of model (iter=0)
2974    o re-generated *all* output since almost all output is modified by this
2975      change (sorry but we've been putting this one off for about 2 years)
2976      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2977        *not* regenerated since they are already out of date and I don't
2978        want to create the impression that they are suddenly working.
2979    o removed KAP stuff for DEC's
2980    o modified/added many .cvsignore files in */code and */input
2981    o added new expt "solid-body.cs-32x32x1"
2982      + this uses an alternative form of ini_curvilinear_grid.F which
2983        is not necessarily any better than the current one...
2984    
2985    checkpoint40pre4
2986    o added re-initialisations of utrans,vtrans,rtrans in
2987      calc_common_factors which are crucial for TAF.
2988    o extended iMin,jMin range for calc_common_factors,
2989      calc_diffusivity
2990    o added option ALLOW_PASSIVE_TRACER
2991    o a few minor updates and fixes
2992    
2993    checkpoint40pre3
2994    o created calc_gtr1.F for gad package
2995    o split the_main_loop and re-introduced forward_step
2996    o some recomputations of nIter0 for TAMC
2997    
2998    checkpoint40pre2
2999    o Updated to latest branch of AJA, JMC
3000    o Added gradient check package
3001    o Added routines for passive tracer handling
3002    o Added carbon sequestration sensitivity experiment
3003    
3004    checkpoint39
3005     o Modifications and fixes to support TAMC
3006       (mainly missing or wrong directives)
3007     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3008       in addummy_in_stepping
3009     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3010     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3011     o Included following packages:
3012       cal: calendar
3013       exf: external forcing
3014       ecco: essential routines to control use of cal, exf
3015             (NB: this is not the full ECCO environment)
3016     o disabled some packages by default in genmake
3017    
3018    checkpoint38
3019     o see notes_c37_adj.txt
3020     o corrected wrong layer index in external_forcing_t
3021     o replaced the_main_loop/forward_step by the_main_loop
3022     o removed forceoutput from write_state
3023       (replaced criteria for initial/final state)
3024     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3025    
3026    checkpoint37
3027     o mdsio.F routine split and packaged in pkg/mdsio
3028       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3029        used unless genmake -disable=mdsio)
3030     o allow a more precise surface-geopotential gradient for the atmosphere
3031       taking into account the change in space of Alpha (=1/rho) at the surface.
3032     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3033       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3034     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3035       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3036       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3037     o Time-Average diagnostics defined as a pseudo package "timeave".
3038     o pickup files : old pickup (before c35) did not work with new code (c35
3039       and after) unless activating 2 commented lines in initialise-varia.
3040     o Non-Hydrostatic pickup file Pb fixed.
3041     o bug with Rigid-lid version (since c35) fixed.  
3042    
3043    checkpoint36
3044     o implement Crank-Nickelson barotropic time-stepping
3045     o recover Time-Average diagnostics
3046     o fix Pb in checkpoint (PR#19)
3047     o AIM become a standard package ; clean unused CPP_kees
3048    
3049    checkpoint35
3050     o subtantial rewrite of dynamics.f
3051     o allows staggered time-stepping
3052     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3053     o added bottom drag (linear + quadratic)
3054    
3055    checkpoint34
3056     o Modified exchange routines for correct reverse simulation.
3057     o Added verification output to comply with bug fix in impldiff.F
3058       as of c33 (exp2, natl_box).
3059     o Corrected store directives in dynamics.F
3060     o Corrected array boundaries in impldiff.F
3061     o Corrected array dimensions in gmredi.
3062       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3063     o Added routine GLOBAL_SUM_INT to global_sum.F
3064     o Added mdsio_gl.F for ECCO purposes.
3065    
3066    checkpoint33
3067     o Fixed bug in lower BC in impldiff.F
3068     o Fixed confusion about units of forcing arrays in FFIELDS.h
3069       namely Fu,Fv,Qnet,Qsw,EmPmR:
3070       - Removed verification/natl_box/code/external_fields_scale.F
3071         (did not differ from that in model/src)
3072       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3073         (see FFIELDS.h for description)
3074       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3075         kpp_calc.F and kpp_transport_t.F
3076       - Removed model/src/external_fields_scale.F and calls to it
3077       - verification/natl_box uses flux data with "atmospheric" sign so
3078         a special version of external_fields_load.F is used to
3079         change the data as it's read in. This way, the arrays
3080         have the right units and signs at all times tha a user could
3081         possibly use them.
3082     o Corrected genmake to delete a temporary file during configuration
3083    
3084    checkpoint32
3085     o Scaling of forcing fields moved from external_forcing.F to
3086       external_fields_scale.F, called directly after loading fields.
3087     o Surface relaxation terms added to surface tendency fields in
3088       extra subroutine.
3089     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3090       fields.
3091     o Changes in GMRedi to comply with packaging structure.
3092     o Modifications and bug fixes in KPP package.
3093     o Verification experiment for KPP added (verification/nat_box/)
3094    
3095    checkpoint31
3096     o Packages interface brought in line with defined standard
3097       -> new routines packages_...F
3098       -> changes in initialise_fixed.F, initialise_varia.F
3099       -> enables initialisation interface for ECCO package
3100     o Rescaling of external forcing fields immediately after read
3101       (removed from external_forcing.F)
3102       -> new: surface_fields_scale.F
3103       -> affects ini_foorcing.F, external_fields_load.F
3104     o Computation of surface tendencies before tendency updates.
3105       -> new: external_forcing_surf.F
3106     o Change of variable names useGMRedi, useKPP, useECCO
3107     o Further changes in dynamics.F, impldiff.F for TAMC
3108     o Tested for experiments 0, 2, 4.
3109       - not yet tested for GMRedi.
3110       - not yet tested for KPP.
3111    
3112    checkpoint30
3113     o Updates for OBCs
3114     o New experiment for test OBCs (internal_wave)
3115     o New output.txt in verification/exp4/results/
3116     o Updates for KPP: calculation of viscosity corrected, new variables
3117       kpp_dumpFreq and kpp_taveFreq
3118     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3119       and entry for T90 in genmake
3120    
3121    checkpoint29
3122     o packaged KPP and GM/Redi
3123    
3124    checkpoint28
3125     o Corrected initialization of hFacMin for difference vertical coordinates
3126     o Modified calculation of partial cell thickness to more robust algorithm
3127     o config_summary.F: replaced write_1D_... by write_0D_...
3128       read_write.F: added subroutines write_0D_...
3129     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3130       included some initialisations required for TAMC.
3131     o routine calc_isoslopes: modified sqrt computation to make it
3132       differentiable for zero argument.
3133     o routines dynamics, impldiff:
3134       included store directives and tape key computations required for TAMC.
3135     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3136    
3137  checkpoint27  checkpoint27
3138   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
3139     formulation works properly with variable resolution.     formulation works properly with variable resolution.

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