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revision 1.70 by jmc, Sat Apr 6 01:36:25 2002 UTC revision 1.751 by jmc, Tue Dec 5 05:32:59 2006 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 start implementation of deep-atmosphere and anelastic formulation
8    o verification: remove 2nd copy of input files and use script "prepare_run"
9      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
10    o mom_common/vecinv/fluxform: fix a few initialisation isssues
11    o profiles: fix for multithreaded case
12    
13    o diagnostics: rename few diags:
14      s/'PRESSURE'/'RCENTER '/g
15      s/'TICE    '/'oceFreez'/g
16      s/'TAUX    '/'oceTAUX '/g
17      s/'TAUY    '/'oceTAUY '/g
18      s/'SWFLUX  '/'oceQsw  '/g
19      s/DIFx/DFxE/g
20      s/DIFy/DFyE/g
21      and add few ocean-forcing diagnostics:
22      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
23    o modifications to pkg/seaice/growth.F and budget.F, which change results of
24      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
25      as actual snow thickness.  It now refers everywhere to effective snow
26      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
27    
28    checkpoint58r_post
29    o modifications to pkg/seaice/growth.F, which change results of
30      lab_sea experiment: fixes pertain to melting snow over open water, to
31      masking EVAP under sea ice, and to using the correct AREA variable for
32      computations of EVAP, PRECIP, HSNOW, and GHEFF
33    o add ability to read bathy, salt, and theta using MNC (off by def)
34    o add flooding algorithm and advection of HSNOW for pkg/seaice;
35      both are turned off by default and do no change any results
36    o seaice advection with pkg/thsice: a step toward the use of non-linear
37      advection scheme, but #ifdef or commented out for now (requires more EXCH).
38    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
39      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
40      in natl_box (affects results @ truncation level: update output.txt)
41    o multi-threading and IO:
42      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
43      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
44        (needed to work with SingleCpuIO): tested in all verif. exp.
45    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
46      affects the results (but none of the verification test uses this scheme).
47    o Adding some pkg/diagnostics capability to pkg/seaice
48      (will certainly be subject to changes)
49    o ctrl: adding new control variables:
50      lwflux, lwdown, evap, snowprecip, apressure, runoff
51    
52    checkpoint58q_post
53    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
54      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
55      high_res_cube configuration by 4% on Columbia.
56    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
57      add (in global_with_exf/code) a version of EXF_INTERP_READ without
58      dynamical allocation (seems to work in multi-threaded).
59    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
60      single CPU io) so that TAF does not have to see EESUPPORT.h
61    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
62    
63    checkpoint58p_post
64    o obcs: stop if obcs is used with useCDscheme = .true.
65    o shelfice:
66     - fix a sign error so that no slip at shelfice interface works
67     - remove stop for combination non-hydrostatic code and shelfice. That does
68       not mean, that the results are correct, but at least they are numerically
69       stable
70    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
71    o added adjoint exch routined for all exch*3d* routines
72      and updated flow directives
73    
74    checkpoint58o_post
75    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
76      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
77    o change controling S/R for writing pickup file (new S/R do_write_pickup)
78      and clean-up reading/writing of pickup files.
79    o fix local version of read/write pickup (NH part) in rotating_tank/code
80    o simplify EXCH interface:
81     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
82     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
83    o added the regrid package
84    o shelfice:
85     - add a simple boundary layer scheme to reduce noise
86     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
87    
88    checkpoint58n_post
89    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
90       local variable (not in common block).
91    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
92      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
93      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
94        to work with SingleCpuIO.
95    o add "_d 0" to real constant of pkg/cfc subroutines ;
96       update exp. cfc_exemple & tutorial_cfc_offline output files.
97    o multi-threading and IO:
98      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
99        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
100      - barrier before and after reading.
101      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
102      - avoid using MDS_WRITELOCAL for LAND pkg output.
103      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
104        common-block variables ; Allows multi-threading with master-thread IO.
105    o change default MAX_NO_THREADS from 32 to 4 ;
106      and stop cleanly when MAX_NO_THREADS is too small.
107    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
108    
109    checkpoint58m_post
110    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
111       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
112    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
113       keep global_ocean.90x40x15 (for AD testing) with former secondary test
114       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
115    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
116        add MITgcm_tutorials (= code + all the tutorials)
117    o ecco, option to compute cost for total ssh (mean+anom)
118    o consistent with addition of ptracer and ssh in pkg/profiles
119    o profiles: adding ptracer and ssh
120    o testreport: change multi-test output-file name
121      (from output.txt.{name} to output.{name}.txt)
122    o profiles: now ok for mutli-tiles case
123    o seaice: add 4 parameters for different advection schemes for area,
124      (effective) seaice thickness, enthalphy, and snow height. Their default
125      is the standard parameter SEAICEadvScheme
126    o calc_gw:
127     - add cosFacU in zonal viscous flux (harmonic.visc.).
128     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
129       of tutorial_plume_on_slope.
130    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
131    o calc_gw: true flux-form, account for horizontal grid spacing.
132      update rotating_tank results, but not plume_on_slope (affected at
133      truncation level, 11 digits).
134    
135    checkpoint58l_post
136    o calc_gw:
137     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
138     - remove side-drag for now (need to fix it); update plume_on_slope results.
139     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
140    o commit code to make SST/SSS weights spatially variable
141      (based on either variable in-situ or variable initial T/S weights)
142    o pkg/ecco:
143      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
144        now based on horizontally varying weights wthetaLev, wsaltLev
145      * cost_averagesflags now returns year indices in addition to day, month
146      * sflux balance is performed on annual basis
147        (sflxumm, sfluxmm2, bal_sfluxmm)
148      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
149        including separate counting and multipliers
150    o pkg/rbcs
151      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
152    
153    checkpoint58k_post
154    o testreport:
155     - always build in dir. "build" (if not there, mkdir build instead of building
156       & running in input)
157     - run in dir run (if it exists), in build otherwise.
158     - call prepare_run (if input/prepare_run exists)
159     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
160    o pkg/exf modifications to interpolation and rotation routines for more
161       reasonable treatment of North Pole singularity: for tracers North Pole
162       value is set to northernmost zonal-mean value, for zonal velocity it is
163       set to zero, and for meridional velocity it is set to northernmost value.
164    o pkg/exf/exf_check_range.F
165     - add tile index to diagnostics and move stop statement to the very
166       end of the routine.
167    o pkg/diagnostics: (diagnostics_main_init.F)
168      define title of isomorphic variables according to the current config.
169    o pkg/thsice with pkg/seaice dynamics:
170    - fix domain of computation (interior only, required for exf) and do exchanges
171    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
172    o towards a standard way of dealing with multi-threading in MONITOR
173      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
174    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
175       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
176    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
177    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
178    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
179       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
180    o tracer advection:
181     - clean-up and simplify calc_common_factors.F
182     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
183       advection subroutine (but still not used within DST advection S/R)
184    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
185    
186    checkpoint58j_post
187    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
188      from file (collects calls previously in FORWARD_STEP)
189    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
190    o adjoint store dir. adjusted accordingly
191    o genmake2
192      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
193    
194    checkpoint58i_post
195    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
196      on wind stress (SEAICEstressFactor defaults to 1.)
197    o Total number of Timers is finite (<=40): comment out 2 non-essential one
198      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
199    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
200      on CS-grid: no longer loosing mass.
201    o exf & curvilinear-grid: no longer modify longitude xC & xG.
202    o pkg/ggl90: fix sloppy output and fix a bug
203    o pkg/seaice: added SEAICEuseEVPpickup parameter
204      - Set to false in order to start EVP solver with
205        non-EVP pickup files when using SEAICEuseEVP
206      - fix sign error in diffusion in seaice_calc_rhs
207    
208    checkpoint58h_post
209    * Modifications for bottom topography control
210      o replace hFacC by _hFacC at various places
211      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
212      o add non-self-adjoint cg2d_nsa
213      o update autodiff support routines
214      o re-initialise hfac after ctrl_depth_ini
215      o works for 5x5 box, doesnt work for global_ocean.90x40x15
216    * Adding verification for 5x5 box (4-layer) bottom topography control
217    
218    checkpoint58g_post
219    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
220       used for mean seasonal cycle, mean diurnal cycle); add an example
221       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
222    o pkg/ggl90:
223      - add parameter (minimum surface kinetic energy)
224      - fix bug (avoiding division by zero)
225    o couple pkg/thsice to pkg/seaice:
226      - modify advection in seaice to accomodate new scalar fields to be advected
227      - only muliDimAdection scheme work with seaice/thsice
228      - mapping of thsice-variables to seaice-variables, back and forth
229      - does not break the verification experiments, but does not give the
230        desired results either
231    o pkg/seaice
232      - make (default) second order advection a bit less confusing?
233    
234    checkpoint58f_post
235    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
236      to pkg/seaice):
237      - new routines thsice_map_exf and thsice_get_exf provide the interface
238      - add an additional formal parameter to thsice_solve4temp
239    o pkg/exf:
240      - add new fields wspeed, snowprecip (to be able to couple to thsice)
241      - correct Stefan-Boltzmann constant
242      - new parameter for longwave surface emittance
243      - separate some stuff from exf_bulkformulae into new routines  
244        exf_radiation, exf_wind
245      - add new parameters and constants: longwave emissivity for ocean, ice
246        and snow, evaporation parameters over ice
247      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
248        either wind from stress or stress from wind
249    o pkg/thSIce:
250    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
251    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
252       and THSICE_CALC_THICKN
253    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
254    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
255      to make debugging easier.
256    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
257    o pkg/bulk_force:
258      - clean-up comments and parameters ;
259      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
260    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
261      generate new output for test-experiment: aim.5l_cs.thSI
262    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
263      testreport accordingly
264    
265    checkpoint58e_post
266    o SEAICE_CGRID adjoint done
267    o R_STAR adjoint implemented.
268      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
269      * need to sort out init. of h0facc, etc.
270    o Make pkg/profile fully independent of ecco,cost, etc. stuff
271      to be able to use it in pure forward.
272    
273    checkpoint58d_post
274    o upgrade simple test-experiment to tutorial example:
275     step.1: duplicate the experiment and (step.2) will remove the old copy.
276      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
277      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
278      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
279      tutorial_global_oce_biogeo    <- copy of dic_example
280      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
281      tutorial_plume_on_slope       <- copy of plume_on_slope
282      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
283      tutorial_global_oce_optim     <- empty for now (David ?)
284      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
285     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
286    o correct a sign problem in cost_scat.F
287    o obcs and ptracers: fix boundary conditions for advections schemes
288      with larger stencil
289    o thsice adjoint: start
290    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
291      completeness
292    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
293      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
294    o ptracers adjoint:
295      * avoid extensive recomputatations
296      * fix missing re-init. of gptr (missed by TAF)
297    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
298      me to turn off the excessive output to STDOUT that this package produces
299    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
300      and add those terms in Vector-Invariant formulation.
301    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
302      if the control period (xx_hfluxperiod etc) is 0
303    o in profiles pkg, clean routines and fix details
304    o in ecco pkg, reading ssh data:
305      fix problem in case the model does not start at iter0=0
306    o fix mnc-pickup/restart for ptracers
307    o new package prifiles:
308      code to compute profile-based cost by Gael Forget
309      (modifs in ecco, ctrl, autodiff)
310    o Benign bug fix in initialization (spotted by M. Mazloff) of
311      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
312    
313    checkpoint58c_post
314    o adjoint: finish NLFS adjoint and provide reference output in
315      verification/global_ocean.90x40x15/results_ad_nlfs
316    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
317      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
318      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
319      with SEAICE_CGRID defined.
320    o move calendarDumps from "data" to "data.cal" and clean-up the code
321      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
322    o add useEXF & useCAL flags (for now, set in hard-coded way)
323    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
324      (were missing in NH mode, and wrong in quasihydrostatic mode).
325      waiting for Chris updated version of calc_gw to add those CALLs.
326    o fix bug in quasihydrostatic S/R ;
327      add a test for this option: global_ocean.90x40x15.qshyd
328    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
329      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
330    o add on/off flag useOffLine for package OFFLINE
331    o seaice:
332      - modify advection so that it works also on the C-grid
333      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
334        problem in multi-tile runs with C-grid
335      - add flags for clipping ice velocities and/or masking solver forcing
336      - fix drag (ocean on ice) formulation and a bug that caused noise in the
337        C-grid solver
338      - added a few comments to seaice_diffusion.F
339      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
340        are now exclusive)
341      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
342        required re-ordering the code a little:
343       + make DAIRN global variable (defined in SEAICE)
344       + move computation of the viscosities eta and zeta into a new separate
345         routine (because I need to recompute them in seaice_ocean_stress.F)
346    
347    checkpoint58b_post
348    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
349      update output.txt of exp. aim.5l_cs.thSI
350    o various mnc cleanups and improvements:
351      + shrink lookup tables by factor of ~4
352      + better error reporting when running out of lookup space
353      + able to handle longer path/file names (up to 500 chars)
354    o adjoint:
355      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
356      - TBD: "hidden" mom_vecinv recomp. in dynamics
357    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
358     (allow to differentiate between forcing components using new integer flags:
359      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
360     and add new flag to put Dissipation tendency out of Adams-Bashforth.
361    o ecco
362      - enable trend removal from SSH anomaly obs.
363    o adjoint
364      - a fix for PmEpR when #undef EXACT_CONSERV
365      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
366      - try to fix "hidden" recomp. in forward_step for NLFS
367        (NLFS seems broken sometimes after I checked it in)
368    o seaice:
369     - add c-grid version of the dynamic solver:
370       + three new routines that are the c-grid substitute lsr, dynsolver
371         and ostres
372       + put a few fields that were local to dynsolver into global common
373         blocks, so that I can move the computation of stresses etc into
374         seaice_lsr (saves coding but may break the adjoint).
375     - replace more hardwired parameters by runtime parameters
376     - add ice masks that mask the rhs of the implicit solvers where there
377       is no ice (commented out in seaice_dynsolver, because i am not sure
378       if this works properly), eventually this should replace the clipping
379       of ice velocities in seaice_dynsolver to +/-40cm/s.
380    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
381      include it only where its needed
382    o move balancing of fluxes before the call of external_forcing_surf
383    o seaice:
384      - correct units of turning angles (now they are really in degrees)
385      - move computation of GWATX/Y out of main routine into dynsolver
386      - initialize GWATX/Y in seaice_init
387    o Apply mask on Fresh-Water flux (needed for SSH forcing).
388      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
389    o seaice: add runtime flags for turning angles (default to zero)
390    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
391      and trend from exf forcing and ctrl control adjustments
392    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
393      (since checkpoint57x_post)
394    o change the default rotation period to 86164.s = the Earth rotation
395    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
396      and based on a reference stratification. Tested within hs94.cs-32x32x5.
397    o seaice advection: add code for choosing between the default (2nd order
398      central differences) and multiDim advection schemes provided by
399      pkg/generic_advdiff
400    o seaice:
401      - removed all references to SEAICE_GRID.h fields from
402        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
403        (cubed-sphere configuration will change a little)
404      - grid computations in seaice_init are obsolete now.
405      - cleaned up code a little so that is easier to read (hopefully).
406      - added new (better?) discretizations of default advection and diffusion
407        (turn on with SEAICEuseFluxForm)
408      - replace 1 in 3d global fields by kSurface in growth.F
409      
410    checkpoint58a_post
411    o seaice:
412      - bug fix in advect.F
413    o shelfice:
414      - separate shelfice load anomaly from pload (breaks with time
415        dependent forcing), => introduce constant field shelficeLoadAnomaly.
416        Its default is 0., but it may be computed more cleverly from (unknown)
417        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
418        done offline. A good approximation of the pressure load anomaly is
419        necessary to avoid large initial adjustment processes underneath
420        deep-reaching shelfice.
421      - small fix in ISOMIP shelfice_thermodynamics
422      - add more sophisticated thermodynamics of Hellmer (1989), this is
423        now the default
424      - give a few constants more intuitive names
425    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
426      if bulk formulae are used in long integration (especially EmPmR). Turn
427      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
428      if balancePrintMean, the imbalance that is substracted is printed to
429      STDOUT.
430    o fix bug (typo) in obcs_apply_eta.F
431    o add a new package shelfice which enables us to model the circulation
432      underneath shelf-ice with draughts of hundreds of meters.
433     - works
434     - to do: + include improved thermodynamics
435              + check whether kSurfC (from model/inc/SURFACE.h) can be used
436                instead of new field kTopC
437              + can we use topoFile, Ro_surf and existing code in ini_depth.F
438                instead of new field R_shelfIce and new code in ini_depth.F
439                and ini_mask_etc.F?
440              + adjust vertical mixing schemes?
441    o seaice pkg:
442     - add a cpp-flag to include a simple formula for a salinity dependent
443       freezing point of sea water at the surface
444     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
445       meridional stresses are now different (and hopefully correct)
446    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
447       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
448       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
449    o pkg/diagnostics: add options and parameters for regional-statistics
450       diagnostics ; define regions by reading a region-mask from a file
451       (might add other options later)
452    o pkg/bulk_force:
453     - add option and parameters to use AIM surface-flux formulae.
454     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
455       others forcing fields (defined in PARM05, parameter file "data") are loaded
456       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
457     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
458     - use the right EXCH call for uwind,vwind (to work on CS-grid).
459     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
460       and parameters (note: calcWindStress replaces .NOT.readwindstress).
461     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
462    
463    checkpoint58
464    o add "--embed-source" option to genmake2 which, when the supporting
465      tools can be compiled (as determined by genmake2) will turn on the
466      embed_files package which then embeds the entire MITgcm source code
467      (*.[fFhc] + Makefile) used for the build within the executable
468      - requested by CNH but off by default
469      - adds a paltry <9MB to the mitgcmuv executable in most cases
470      - only writes the output when useEMBEDSRC in eedata is true
471    o clean up 3-dim. relaxation codes:
472      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
473      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
474      * Thanks to Tom Haine for testing!
475    
476    checkpoint57z_post
477    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
478      affects output (@ truncation level) of exp. plume_on_slope ; updated.
479    o fix the pickup behavior for obcs in combination with ptracers
480    o fix a bug in ptracers_external_fields_load
481    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
482      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
483    o transfered surface NH pressure to eta field (if exactConserv).
484    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
485         and update lab_sea output.txt file.
486    o completing 3-dim. relaxation code: additional term
487         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
488      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
489      * At compile time, in "EXF_OPTIONS.h" set
490          #define  ALLOW_CLIMTEMP_RELAXATION
491          #define  ALLOW_CLIMSALT_RELAXATION
492      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
493          tauThetaClimRelax3Dim = 15552000.0,
494          tauSaltClimRelax3Dim  = 15552000.0,
495      * 3 cases:
496          1) Use a constant-in-time 3-dim. field
497          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
498          3) Real-time relax. to time-evolving prescribed field
499    o Adding Laplacian-type smoothness constraint on
500      initial and boundary (forcing) controls (ic, bc)
501      * enable at compile-time via
502        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
503      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
504      * Absolute scale somewhat unclear so far
505      * no area weighting was included since no other cost term does so far
506    
507    checkpoint57y_post
508    First step for a NLFS adjoint
509    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
510    o new init. routines for calc_r_star, calc_surf_dr
511    o still need to deal with ini_masks_etc
512    o testreport seemed happy
513    checkpoint57y_pre
514    
515    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
516    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
517    o add new offset feature to offline pkg (plus minor cleanup)
518    o cfc fixes for final year of integration
519    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
520      be in GCHEM_OPTIONS).
521    
522    checkpoint57x_post
523    o fix testreport Pb in multiple test experiment.
524    o cleanup our namelist syntax in verification:
525      - make it more F95 standards compliant (some work still needed)
526      - allows the vast majority of our tests to work with gfortran
527    o Non-Hydrostatic:
528     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
529     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
530    o Allow to apply AB on T,S rather than on AB(gT,gS):
531     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
532     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
533       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
534     - need a "clever" read_pickup to restart from the other AB formulation
535    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
536    o remove some unused variables (reduces number of compiler warnings)
537    o adjoint
538      * Disable useVariableViscosity for adjoint for time being
539        (there are a number of extensive recomputations)
540      * Initialize certain variables needed for adjoint
541    
542    checkpoint57w_post
543    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
544                 fix the singleCpuIO RS version of MDSWRITEFIELD
545       and add a WARNING if using globalFiles=T with multi-processors.
546    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
547      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
548    o tracer advection scheme:
549      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
550       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
551       was not very convenient).
552      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
553       (further tests needed for the implicit DST & Flux-Limiter schemes).
554    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
555      and sRef for convenience, handy, when you want to initialize
556      ptracers in a large domain with a constant non-zero value. Also,
557      untangle ptracers_init.F a little.
558    
559    checkpoint57v_post
560    o change dome exp. to use variable viscosity in side-drag terms.
561    o remove all the files from the cfc_offline test since they are now
562      incorporated into tutorial_cfc_offline which has been producing
563      identical results for a few days of testing
564    o add new parameter: sideDragFactor to enable half-slip-side BC
565      and change side-drag S/R to use viscosity from mom_calc_visc
566      (can switch back by setting sideDragFactor=0.); affects results at
567      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
568       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
569    o vorticity & strain are now computed without masking, to account for
570      no-slip-side BC in variable viscosity calculation ; mask is applied
571      anyway later on, before computing advection/coriolis terms.
572    o modify exp4 to test new obcs support for reading from external files
573      and for passive tracers
574    o fix behavior of ptracers_monitor when monitor output is written to a
575      netcdf-file; still not independent of monitor.F (writes in the same
576      file).
577    o change default value of tRef (put a uniform, meaningful value for ocean
578      & atmos) and initialize sRef (was missing, as Martin mentioned).
579    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
580      to be proportional to enstrophy dissipation length.  Thus,
581       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
582      This is now consistent with Smagorinsky and with the manual.
583    
584    checkpoint57u_post
585    o OBCS and PTRACERS: add open boundary support for passive tracers
586      - either use homogenous (pseudo) v.Neumann conditions or prescribe
587        OB-values from file; this is not different from the way theta and salinity
588        are treated
589      - however, Orlanski-radiation conditions are not supported, and the model
590        will stop if you use pTracers and Orlanski at the same time.
591      - beefed up the rountine obcs_external_fields_load: now only those open
592        boundary values are overwritten with values from files for which there
593        are really files, otherwise the OB-fields remain untouched. This makes
594        it possible to use different OBs at different ends of the domain (as
595        with EXF)
596    o reduce number of exch calls in shap_filt (s2).
597    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
598      truncation level) 4/5 MLAdjust test results (11&12 digits match).
599    
600    checkpoint57t_post
601    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
602    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
603      same truncation, independent of the face number: affects affects several
604      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
605    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
606      note that biharmonic viscosity + no-slip was not tested in any experiment.
607    o fix bug in non-linear free-surf side-drag ; generate new output for
608      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
609    o make mnc honor the writeBinaryPrec flag for most kinds of output
610    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
611    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
612      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
613    o add brackets in multi-terms sum to get same truncation, independent of
614      the face number (manage to get exactly same value of gU,gV at the cs-edge)
615      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
616    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
617      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
618      a maximum grid-scale Reynolds number.  Also, changes all length calculations
619      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
620      Suggested values of viscosity parameters found in mom_calc_visc.
621      Many new viscosity diagnostics available.
622    
623    checkpoint57s_post
624    o Add clearing-house for viscosity calculations, mom_calc_visc and
625      correct numerous bugs in LeithD and Smagorinsky discretizations.  
626      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
627      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
628      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
629      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
630      The Strain-Tension form is now called with useStrainTensonVisc=.true.
631      ViscAhStrain and viscAhTension are now retired.
632    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
633    o In response to JMC's bug report, genmake2 now ignores any soft-links
634      that it finds in the *current* directory when searching for files.
635      Soft-links found in any other source directories will still work as
636      they did before.
637    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
638      a C routine to unlimit the stack size
639    o mnc-ify pkg/aim snapshot vars
640    o mnc-ify pkg/land as requested by Daniel
641    o various changes to mnc including:
642      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
643      - output can now be grouped so that all files within a group
644          change the ITER portion of their names in lock-step together
645      - can now read ("global") PER-FACE (in addition to PER-TILE) files
646          and works with both EXCH1 and EXCH2 (but needs more testing)
647      - writing works for all verification test cases w/ g77 on Linux
648    
649    checkpoint57r_post
650    o make MNC variable initialization happen earlier
651    o add diagnostics for (almost) each term of the momentum Eq.
652    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
653    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
654    o remove MINIMAL_TAVE_OUTPUT option ;
655      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
656    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
657      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
658    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
659    o add time-dependent SST, SSS control
660    o cost terms in ecco/ modularized (new cost_generic.F)
661    o cost_averages routines are modularized (new cost_averagesgeneric.F)
662    o new infrastructure for seaice model vs. obs misfits in seaice/
663      * driver from the_main_loop.F is seaice_cost_driver.F
664      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
665      * gradient check in Exp. 6a of natl_box_adjoint/
666    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
667      (see README file)
668    
669    checkpoint57q_post
670    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
671    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
672      - bug was reported by Jean-Michel and Ian Fenty
673    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
674      update exp. cpl_aim+ocn output.
675    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
676      Needed for high-res. runs with large global files
677      to be able to limit tapelev size
678    o Changed some tests for adjoint:
679      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
680      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
681      * global_ocean.90x40x15/ back to default 3-level checkpointing
682    o Modifications to enable scripted COMMON to MODULE conversion
683      * verification/OpenAD/code/ has necessary scripts and description;
684      * converts, compiles and runs successfully;
685    
686    checkpoint57p_post
687    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
688    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
689      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
690    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
691    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
692      (was already the case for dissipation with mom_vecinv,
693       and also the case for grad.PhiHyd when staggered-timeStep)
694      This will allow to put dissipation out-off the AB time-stepping.
695     Unfortunately, affects truncation error. Update output of exp. that "fails"
696      (cg2d matching number) and leave the others for later: front_relax(10),
697      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
698      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
699    
700    checkpoint57o_post
701    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
702      (2) its ready to be documented during the 20050801 DocFest
703    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
704      for ideal_2D_oce and lab_sea on linux_ia32_g77
705    o set to #undef CTRL_SET_OLD_MAXCVARS_30
706      in global1x1_tot/code_seaice_adj to access indices 32, 33
707      (worth another tag)
708    
709    checkpoint57n_post
710    o adding precip control xx_precip 32
711    o adding swflux control xx_swflux 33
712    o Replacing 10 forcing penalty cost routines by 1 generic.
713    o Implementing partitioning in time-mean and variable adjustment
714      for atmos. state.
715    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
716    o in natl_box_adjoint:
717      * updated exp 1 to 10
718        (but does not have time-mean vs. variable split results yet)
719    o updated global1x1/*_seaice_adj/
720      to incorporate latest changes
721    o enable useSingleCpuIO for mdsio vector routines
722      (applies in particular to tapelev I/O)
723    o removed inefficient K-loop in all active_file*control*.F
724    
725    checkpoint57m_post
726    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
727      and advect_cs (use EXCH-2 and standard cs-32 grid files).
728    o pkg/exch2: filling of face-corner halo regions is optional
729      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
730    
731    checkpoint57l_post
732     tag before updating tutorials (pre-release-2)
733    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
734       for output and interpolation of input fields onto model grid)
735    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
736       Affects results of exp. rotating_tank ; update output.txt.
737    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
738          and taking the square quantity and/or using a fraction-weight field.
739    o fix aim_diagnostics_init.F mate numbers.
740    o add mnc output capability to diagnostics/diagstat and update
741      our cvsignore files for the ACSII output generated
742    
743    checkpoint57k_post
744    o lab_sea now uses diagnostics package and provides a suite of
745      new EXF diagnostics output.
746    
747    checkpoint57j_post
748    o exf
749      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
750        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
751        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
752      * extended diagnostics output
753        - now includes all EXF variables
754        - hs, hl moved to common block
755        - separate S/R for diagnostics, called after ctrl vector is added
756        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
757        - EXFqnet contains true Qnet (i.e. includes qsw)
758      * updated verif. lab_sea, global_with_exf
759      * Rearranging hflux (exf_mapfields -> exf_getforcing)
760        to ensure that diagnostics sees a true EXFqnet
761    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
762    o diagnostics pkg: change pointers so that 1 diagnostic can be used
763      several times with different frequencies.
764    o mnc-ify the thsice package as requested by Daniel Enderton
765      - the monitor--MNC output needs work
766      - many attributes need to be added (most are currently blank)
767    o mnc-ify theaim_v23 package as requested by Daniel Enderton
768      - many attributes need to be added (most are currently blank)
769    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
770    o add Sadourny like discretization to the 4th.O vorticity advection scheme
771    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
772      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
773         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
774    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
775     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
776    
777    checkpoint57i_post
778    o Diagnostics package was changed: diagnostic allocation is now deactivated
779      by setting an empty file name in the namelist (used to be by setting 0 frequency)
780    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
781      add 1rst Order upwind vertical Shear.
782    o add a quick fix for A/B checkpointing in OFFLINE mode
783    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
784      end-run around the C/Fortran linking horror in eesup/src/timers.F
785    o added pkg/runclock: allows user to terminate run based on wall clock
786    o added non-hydrostatic scaling parameter: nh_am2
787    o pkg/my82: futile attempt to make results compiler-independent by adding
788      some "_d 0", etc. no effect.
789    o for mnc output, fill the 'T' coordinate var with myTime and create a
790      separate 'iter' variable for iteration count
791    o pkg/diagnostics:
792      add new capability: output of Global/Regional & per-level statistics ;
793      tested against monitor output (including land & thSIce) on various exp.
794    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
795    
796    checkpoint57h_done
797      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
798      data.diagnostics, data.gchem, data.ptracers) is done.
799    
800    o pkg/diagnostics: prepare for Global/Regional statistics.
801      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
802    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
803      and rename it: DIFFERENT_MULTIPLE
804    
805    checkpoint57h_post
806    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
807    o pkg/diagnostics: change output frequency, now in seconds (instead
808      of Nb of iterations). This requires to change data.diagnostics.
809    checkpoint57h_pre
810    
811    o in mnc, let the user create the output dir if both mnc_outdir_date
812      and mnc_outdir_num are false
813    o add fflags() to pkg/diagnostics which allows one to specify, on a
814      per-file basis, the file precision [default behavior is unchanged]
815    o added diagnostics to pkg/kpp, including computation of mixed layer
816      depth based on a temperature/density criterion
817    o updated verification/natl_box to test the new pkg/kpp diagnostics
818    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
819    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
820    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
821      not mnc -- this mistake was found by JMC and is now corrected
822    
823    checkpoint57g_post
824    o add Adams-Bashforth 3rd Order time stepping:
825      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
826      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
827    checkpoint57g_pre
828    
829    o make lambda[Theta,Salt]ClimRelax spatially varying
830      (default remains spatially uniform constant based on tau)
831    o added new control variables
832      * init. uVel, vVel, etanN
833      * lambda[Theta,Salt]ClimRelax
834    o separate masks used for ctrl_pack/unpack 'from write_grid' output
835      (suggested by G. Forget)
836    
837    checkpoint57f_post
838    o add parameter "baseTime" = model base time = time at iteration zero
839      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
840      account for baseTime shift
841    o move Coriolis arrays from PARAMS.h to GRID.h
842    checkpoint57f_pre
843    
844    o mnc-ifying the seaice package
845    o introduced an alternative length scale calculation for use in the limiting
846      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
847    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
848    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
849      as well as grad(vort3).  Made it compatible with both approximate form
850      for the cubed sphere and full form of these gradients.  Added flag
851      useFullLeith to select between approximate and full form.  
852    o add "d0" in getcon.F to reduce differences between compilers/platforms
853      update output.txt of exp. fizhi-gridalt-hs
854    o change port_rand funtion to allow to set the seed.
855    o fix obscure MNC bug involving conversion between reals and integers
856      - it caused no problems with certain (eg. gcc, ifc) compilers but the
857        new version is now more standards-compliant
858    o adjoint-related modifications
859      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
860      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
861      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
862    
863    checkpoint57e_post
864    o Adding eddy stress controls a la Ferreira et al.
865    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
866    
867    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
868      update output.txt of exp. fizhi-gridalt-hs
869    o add more "Z" dimensions and associated coordinate vars to MNC
870    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
871    o parameter calendarDumps: when set, approximate months (30-31 days) and years
872      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
873      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
874      months and years.  Requires pkg/cal.
875    o diagnostics: add pickup functionality
876      - off by default for backwards compatibility
877      - current version only uses MDSIO -- MNC will be added
878    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
879    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
880    
881    checkpoint57d_post
882    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
883    o modify verification/ideal_2D_oce so that it tests the creation of mnc
884      output from the diagnostics package
885    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
886    o make genmake2 more portable by using ".$FS" instead of ".f" for more
887      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
888    o add coordinate variables to the MNC output from the diagnostics package
889    o change MNC-flags default value: true when useMNC=TRUE
890    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
891      the ability (off by default) to read the grid information using MNC
892    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
893    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
894    o do snap-shot diagnostics at the middle of the time-interval (instead of
895      at the end).
896    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
897      new test for AIM with thSIce + slab-ocean
898    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
899    o move state variable diagnostics to the beginning of the time step ;
900      (note: still needs some work specially for snap-shot diagnostics)
901      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
902    
903    checkpoint57c_post
904    o Change testing option (-ieee) to get closer agreement between g77 & ifort
905    o generate new output.txt files on faulks with g77 & the new -ieee option
906    checkpoint57c_pre
907    
908    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
909      update output.txt of exp. global_ocean.90x40x15
910    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
911      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
912    o add saltFlux(+File) forcing capability with periodicExternalForcing
913    o allow to use pkg diagnostics for GM-Redi & ThSIce output
914    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
915    o improvements for the MNC output from DIAGNOSTICS:
916      - correct handling of the unlimitied dimension
917      - all dims now have associated coordinate variables
918      - variables located at U, V, and Corner ("Z") points are now written
919        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
920        *all* data points are output
921    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
922    o added pkg/seaice/seaice_monitor.F
923    o mdsio_readfield.F can now read files visible only to master MPI process.
924    o pkg/seaice: some test code for ice-modified ocean stress
925    o exf_getffields interpolation defaults to bilinear for all scalar forcing
926      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
927      spurious negative numbers for precipitation and humidity.  Will cause
928      some small numerical differences for integrations using pkg/exf/exf_interp.F.
929    o pkg/ctrl/
930      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
931        May be enabled via doPackDiag
932      *  introduce z-scaling of
933         + gradient (doZscalePack) and
934         + control (doZscaleUnpack)
935    o pkg/mdsio/
936      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
937      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
938    
939    checkpoint57b_post
940    o simplify options in diagnostics_fill arguments (remove weird combinations)
941    o fix MNC coordinate variables so that they now contain per-face index
942      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
943      general, EXCH2 grids are only aligned to a "local" coordinate system
944    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
945    o Implement instantaneous output within pkg diagnostics:
946      setting a negative frequency in data.diagnostics produces
947     "snap-shot" output (as opposed to time-average if freq > 0)
948    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
949      NOTE: change ptracer diagnostics name: use 2 characters to work with
950            more than 9 tracers. Add also diagnostics of advect & diffus flux.
951    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
952      becomes the coordinate variable for the 'T' dimension
953    o add CF-style coordinate variables to MNC
954      - just a first cut:  numbers are meaningless on the cubesphere and
955        missing along the T axis but otherwise it works!
956    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
957    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
958    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
959      this is based directly on what the model compute, so that the content of
960      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
961    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
962    o clean up build options files for SunOS, in particular
963      - remove -traditional from xmakedepend
964      - change -xarch=v9 to -xarch=native for f77
965      - restore use of make (not gmake)
966      - add CC=gcc if using g77
967    o changes per discussion of AM, JMC, & EH3 today:
968      - move redundant "grid" variables out of "state" -- in preparation of
969        creating proper CF-style coordinate variables and in recognition
970        that any/all grid variables can be easily copied (eg. w/NCO) from
971        the grid files into any of the other NetCDF files
972      - *always* output grid variables with MDSIO (this will eventually be
973        changed)
974      - output MNC grid file if useMNC is true
975    o every instance of _END_MASTER() has been found and replaced with
976      _END_MASTER( myThid ) in order to satisfy certain picky Sun
977      preprocessors
978    o re-arrange diagnostics pkg initialisation:
979     - allow each package to extend the available diagnostics list
980     - add some checking and fix small problems (multi-threaded, ...)
981     - new S/R diagnostics_fill (replace fill_diagnostics):
982       look through the short list of active diag. (instead of the long list)
983       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
984    
985    checkpoint57a_post
986    o this set of changes restores TAMC compatibility
987      tested for global_ocean.90x40x15 adjoint on trough
988      (what a pain)
989    
990    checkpoint57a_pre
991    o some modifs in tools/build_options for sunos
992    o call ctrl_pack for ctrl at end for optimcycle=0
993    
994    checkpoint57
995    o add horizontal bi-harmonic viscosity for vertical velocity
996      - new parameter viscA4W (defaults to viscA4)
997      - affects only non-hydrostatic code
998      - to be done: no-slip lateral boundary conditions
999    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1000    o implement Implicit Vertical advection for pTracers
1001    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1002      (implemented also for implicit vertical diffusion & advection)
1003    o OBCS: extend application of tracer open boundary conditions
1004      to a strip beyond the boundary of width Olx/Oly
1005    o add call monitor to TAF set of required calls (flow directives)
1006      and include in natl_box_adjoint
1007    o untangle a few ifdefs related to cost, ctrl, autodiff
1008      untangel a few ALLOW_ECCO_OPTIMIZATION
1009    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1010      (theta2, salt2 in ecco_cost_weights)
1011    
1012    checkpoint56c_post
1013    o OBCS as control variables
1014      - update ctrl_ad_diff.list, obcs_ad_diff.list
1015      - remove balance of obcs controls from default
1016      - fix index bug nobcs in ctrl_init
1017      - fix dummy fields filen in ctrl_pack
1018      - add dummy weights for obcs
1019    o lsopt: comment out fort.94 output
1020    o optim:
1021      - remove unnecessary header files
1022      - adjusted namelists
1023      - add xerbla.F to Makefile
1024    o exf:
1025      - multiple modifications of exf_check_range
1026      - unit change in exf_init_runoff from [m/year] to [m/s]
1027    o mdsio:
1028      - i/o-vector change debugLevel from debLevA to debLevB
1029    
1030    checkpoint56b_post
1031    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1032      is called from DO_THE_MODEL_IO
1033      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1034      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1035      - clean up PTRACERS_WRITE_TIMEAVE a little
1036    o add another verification experiment that tests both the cfc-pkg and
1037      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1038      reactive tendencies treated inline with regular timestepping
1039    o testreport previously did a lousy job of comparing small numbers, so
1040      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1041      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1042      testreport.
1043    o ptracers_monitor: bug fix for MPI
1044    
1045    checkpoint56a_post
1046    o GCHEM: finish reorganizating the package
1047      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1048        (introduces another 3D-array for each passive tracer, but only if
1049        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1050        gchemTendency is not needed because the timestep is done separately)
1051      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1052      - GCHEM is now---more or less cleanly---separate from PTRACERS
1053      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1054        so clear to me how that should be done in a general way.
1055    o CFC: improve formatting of output in CFC_ATMOS
1056    o PTRACERS:
1057      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1058        that ALL experiments with ptracers enable can be checked. This makes
1059        GCHEM_MONITOR obsolete.
1060      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1061        monitorFreq
1062      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1063    o add PTRACERS (PTR0[1-5]) to testreport output
1064    o exf_check_range:
1065      * default changed to .TRUE.
1066      * will check values for niter0 if debLevA, every timestep if debLevB
1067      * STOP in exf_check_range if 'out of range'
1068      * range chosen generous to allow for potential extema
1069      TBD: a version with stricter range
1070           permitted range would be runtime parameters
1071    o GMredi:
1072      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1073      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1074      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1075    o GCHEM:
1076      - move call to GCHEM_FORCING_SEP, so that it is now called before
1077        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1078      - introduced a useGCHEM runtime flag and applied it everywhere.
1079      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1080        this flag is now only visible within GCHEM-pkg routines.
1081      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1082        be replaced by a 3D array that is computed before thermodynamics; for
1083        this, the tracer ID iTracer had to be included into the parameter list
1084        of ptracers_forcing
1085      - set up forward_step to call gchem_forcing, that will replace
1086        gchem_forcing_int in ptracers_forcing
1087      - cleaning up
1088    o small cleaning of exch2: remove files that are also in eesupp/src
1089    
1090    checkpoint56
1091    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1092    o mnc: cleanup "full" files--fixes out-of-memory problem
1093    o ECCO-GODAE
1094      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1095      * fully merged and updated from SIO code
1096        windstress sign change affects
1097        - exf_inscal_[u/v]stress
1098        - sign of xx_tau[u/v] adjustments
1099        - signs in cost_scat
1100      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1101      * natl_box_adjoint updated and compressed
1102      * 2-level checkpoint switch added
1103        (tested in EXP. 1 of natl_box_adjoint)
1104      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1105    o SVD
1106      * first complete, non-hacked version for SVD calculations
1107      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1108        performed via direct access files admtlm_vector.it????
1109        (via ctrl_[un]pack)
1110      * optimcycle is used for ARPACK iteration counter
1111        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1112      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1113        and add linear transforms where necessary
1114      * controls are initial/final SST, SSS (can be extended; need to check
1115        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1116    o mdsio: filename info to both stderr, stdout
1117    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1118      from sign change
1119    
1120    checkpoint55j_post
1121    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1122      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1123    o add consistent build directories and .cvsignore files to verification
1124    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1125    o make all subroutines 30 or less characters in length for certain older
1126      compilers to work (a thorough search only turns up two routines in
1127      pkg/ptracers)
1128    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1129      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1130    
1131    checkpoint55i_post
1132    o change arrays for total vertical diffusivity (2.D if explicit,
1133      3.D if implicit) ; each ptracer uses its own background value.
1134    o added mnc/NetCDF output capability to ocn_compon_interf
1135      - added bits to verification/cpl_aim+ocn so that it can run on
1136        ITRDA and other clusters without the mpirun "-wd" option
1137    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1138      configuration
1139    o give MNC the ability to create additional files rather than
1140      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1141      - the default is just less than 2GB which is a practical limit
1142        on many systems
1143    o Compute the non-local term using either KPP vertical diffusivity (=default)
1144       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1145    
1146    checkpoint55h_post
1147    o add verification test "vermix"
1148    o remove all the *_ioinc flags and replace with the single global
1149      outputTypesInclusive flag
1150    o allow to set a vertical profile of vertical diffusivity for T & S
1151    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1152    o useMNC moved from data.mnc to data.pkg
1153    
1154    checkpoint55g_post
1155    o Renaming carbon AD experiments to comply with testreport conventions
1156    o Updating adjoint of Held-Suarez hs94.1x64x5
1157    o Fixing directives for non-ECCO forward_step, after ECCO directives
1158      have been fixed to avoid recomp. of do_oceanic_phys
1159      Works well for global_ocean.90x40x15,
1160      but recomp. issue remains for carbon
1161    o Updating adjoint output for natl_box_adjoint after
1162      pkg/ecco has been modified (see taga c55d_post)
1163    
1164    checkpoint55f_post
1165    o rename to timeave_init_fixed
1166    
1167    checkpoint55e_post
1168    o some delicate re-shuffle of store directives to avoid one
1169      extra call of do_oceanic_physics
1170      affects ecco_the_main_loop.F, do_oceanic_physics.F
1171      checkpoint_lev1_directives.h
1172    o NB: this may break global_ocean adjoint temporarily,
1173      but it is clear how to fix it. Will do later, need this now.
1174    
1175    checkpoint55d_post
1176    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1177    o ecco_cost_weights is modified to 1x1 runs
1178    o modifs to allow observations to be read in as
1179      single file or yearly files
1180    o enable to read exf forcing fields as either
1181      single file or yearly files (flag useExfYearlyFields)
1182    checkpoint55d_pre
1183    
1184    o switch between 2-level and 3-level checkpointing
1185    o add ability of MNC to write local and "partial" (eg. 2D slices where
1186      the full 3D field is never actually stored) arrays to NetCDF files
1187      with the correct (that is, the complete multi-dimensional) set of
1188      array indicies
1189      - used in mom_vecinv() to write the diagFreq output
1190      - tested (demonstrated) in verification/aim.5l_cs
1191    o further mnc-ification
1192      - add verification/lab_sea to the list with mnc setups
1193      - fix undefined mnc v-names in cd_code
1194      - add kpp to mnc output (both snapshot and timeave)
1195    o non-hydrostatic code
1196      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1197        in calc_gw.F
1198      - defaults to viscAh
1199      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1200        friction or Leith) in non-hydrostatic mode, as long as there is
1201        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1202    o pkg/cost
1203      extend simple cost functions to treat time mean quantities
1204      (T,U,V) via cost_accumulate_state from cost_tile
1205    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1206        be 2 times larger than the minimum size the advection scheme requires.
1207        now get a perfect conservation of salt in advect_cs test-exp (updated)
1208    o GGL90 (Gaspar's TKE mixed layer)
1209      - add horizontal diffusion of TKE, requires exchanges in
1210        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1211        default. In OPA there is no horizontal diffusion of TKE but the
1212        mixing coefficients are computed from a horizontal average of TKE of
1213        6 points or so. I think that diffusion has a little more physical
1214        justification.
1215      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1216        was in vain)
1217      - mask tke-variable in ggl90_init
1218    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1219    o fix biharmonic diffusion on CS-grid.
1220    o more obcs stuff
1221      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1222        for reading boundary values. This routine is called from
1223        obcs_prescribe_read
1224      - updated obcs_check
1225      - changed sponge layer relaxation parameter units for days to seconds
1226      - turned off sponge layer by default
1227      - changed argument list of OBCS_CALC to myTime+deltaTclock
1228      - fixed about 35 bugs in obcs_external_fields_load
1229    
1230    checkpoint55c_post
1231    o obcs stuff
1232      - new runtime flags useOBCSprescribe, useOBCSbalance
1233      - re-arranged obcs_calc
1234      - moved exf_getobcs to obcs_prescibe_read
1235        obcs_prescibe_read is called after ORLANSKI stuff
1236        and independent of it (executable can contain all).
1237      - updated obcs_check
1238      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1239        These may be necessary only if tangential velocities are
1240        prescribed at OB, not sure, needs testing.
1241    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1242      which simplifies the calls and passes the ifc check-bounds test
1243    
1244    checkpoint55b_post
1245    o add a 2D scalar, Z location, exchange_2 routine.
1246    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1247      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1248      affects advect_cs results (for the wrong reason): update output.txt
1249    o use a more standard discretization for biharmonic viscosity ;
1250     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1251      affects results of dome set-up: update output.txt
1252    o fix gad_advection.F (CubedSphere part), back to version 1.23
1253    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1254    
1255    checkpoint55a_post
1256    o merged code to
1257      * prescribe/read time-dependent open boundaries
1258        (works in conjunction with exf, cal)
1259      * sponge layer code for open boundaries
1260      * each boundary N/S/E/W now has its own CPP option
1261        (healthy for the adjoint)
1262    
1263    checkpoint55
1264    o up-to-date adjoint of previous breaks
1265      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1266      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1267      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1268      - carbon: * remove tr1-related adjoint verification
1269                * add ptracer as control variable
1270    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1271      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1272    
1273    checkpoint54f_post
1274    o in verification/carbin/ remove experiment related to
1275      ALLOW_PASSIVE_TRACER (array tr1 etc)
1276      code_ad/ input_ad/ results_ad
1277    
1278    o add two new packages
1279      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1280        + subject to optimization (memory)
1281      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1282        + subject to reordering (many GOTOs in the original code)
1283        + so far opps is called for every (i,j) point, and then operates in
1284          the vertical; one may want to reorder the scheme in order operate in
1285          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1286          fields)
1287    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1288      - all verification tests compile and run with linux_ia32_g77
1289      - defaults are compatible with current input files--nothing
1290        should change if you were not previously using MNC
1291      - MNC output has been added in numerous places (eg. timeave)
1292        but there are still a few writes not yet do-able with MNC
1293        (this is in progress)
1294      - flags now allow for either/or/both use of MDSIO and MNC and
1295        documentation will soon follow
1296      - numerous small formatting cleanups for ProTeX
1297    o add version info (via BUILD_INFO.h) to MNC and stdout
1298    
1299    checkpoint54e_post
1300    o add two new packages
1301      - pp81 (Packanowski and Philander, 1981), Richardson number and
1302        stratification dependent mixing
1303      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1304      - these scheme operate in a similar manner as KPP (without ghat, of
1305        course), however there is only one diffusivity that is used for both
1306        temperature and salinity (and passive tracers)ç
1307    o add offline package
1308    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1309      provided by Stephanie Dutkiewicz
1310    o genmake2: add ability to search for C compilers and cleanup test output
1311      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1312    
1313    checkpoint54d_post
1314    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1315    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1316      leading to additional shift by 5 days each year of integration
1317       (i.e. leading to considerable offset over the years)
1318    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1319    o start with no AB and no initial filtering (staggerTimeStep):
1320      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1321    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1322      (external loading & cpl import/export stay in forward_step.F)
1323    o update coupling interface to work with new staggerTimeStep
1324    o change MDSIO ptracers_pickup.
1325    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1326    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1327    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1328    
1329    checkpoint54c_post
1330    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1331      this affects (truncation error) output.txt of test-exp:
1332       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1333    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1334    o change Qnet to always be the net heat flux, (+upward).
1335      affects (truncation error) output of natl_box exp.: updated
1336    o define the max number of passive tracers in PTRACERS_SIZE.h
1337    o start to test mnc routinely in exp0
1338    o add sea-ice loading (sIceLoad) as a new forcing field.
1339    
1340    checkpoint54b_post
1341    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1342       impressive on Altix and Opteron systems)
1343    o diagnostics can now write NetCDF files through the mnc package
1344    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1345    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1346    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1347      affects (truncation error) output of lab_sea & natl_box exp.: updated
1348    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1349    
1350    checkpoint54a_post
1351    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1352    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1353    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1354    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1355      + internal_wave (shift in writing cg2d_ini_res)
1356    checkpoint54a_pre
1357    
1358    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1359      - modified verification/lab_sea and natl_box_adjoint accordingly
1360    
1361    checkpoint54
1362    checkpoint53g_post
1363    o prepare splitting of thermodynamics: store convect.counter in common block
1364    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1365      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1366    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1367    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1368    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1369    o restore adjointability
1370    
1371    checkpoint53f_post
1372    o modifications that affect AIM experiment results (update output.txt):
1373      - no advection of S at top interface Nr (pkg/generic_advdiff)
1374      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1375    o AIM pkg:
1376      - include stability function into surf.Flux derivative relative to Tsurf
1377      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1378    
1379    checkpoint53e_post
1380    o merged cylindrical coord configuration
1381    o added rotating_tank experiment
1382    checkpoint53e_pre
1383    
1384    checkpoint53d_post
1385    o faulks upgraded: re-generate output.txt that have changed:
1386       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1387    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1388    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1389    o added Sadourny discretization of Coriolis
1390      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1391      - re-enabled use of omega3 (useAbsVorticity)
1392    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1393      vector-invariant equations
1394      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1395    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1396      hopefully without new bugs
1397      - still to do: biharmonic friction for non-hydrostatic w
1398    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1399    o regenerated output for global_ocean_ebm (using -ieee)
1400    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1401      of mom_common/
1402      - simple re-arrangement of instructions within computing loop
1403    checkpoint53d_pre
1404    
1405    checkpoint53c_post
1406    o new version of coupler for AIM+thSIce and Ocean models
1407     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1408     - land: change Evaporation of snow
1409     - aim with thSIce: fix bug in snow-precip.
1410    o changes to calc_gw.F
1411     - bug fix for w^2 term near the bottom boundary
1412     - (hopefully) improve the lateral slip boundary condtions for use with
1413        partial/looped cells
1414      - because the bug fix changes two verification experiments anyway (exp5
1415        and plume on slope), change the lateral boundary condition from half slip
1416        to the value of no_slip_sides
1417    o ebm package wasnt quite up to the parallel task. Fixed that.
1418    o Adjoint of EBM package + verification
1419      * TLM OK
1420      * ADM not sufficient accuracy yet (needs further testing)
1421    
1422    checkpoint53b_post
1423    o Commiting new energy balance model to repository
1424      * package is pkg/ebm
1425      * verif. is verification/global_ocean_ebm
1426      * references are in ebm_driver.F
1427    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1428    C        Global thermohaline circulation. Part I:
1429    C        Sensitivity to atmospheric moisture transport.
1430    C        J. Climate 12(1), 71-82
1431    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1432    C        Global thermohaline circulation. Part II:
1433    C        Sensitivity with interactive transport.
1434    C        J. Climate 12(1), 83-91
1435    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1436    C        Destabilization of the thermohaline circulation
1437    C        by atmospheric eddy transports.
1438    C        J. Climate 7(12), 1870-1882
1439    o Will need long integration testing.
1440    checkpoint53b_pre
1441    
1442    o created pkg/mom_common in preparation for variable viscosity code
1443    o renamed and split ini_mnc_io
1444    o pkg/land: only liquid water can diffuse or run-off
1445    o AIM using land: soil wetness availability account for snow
1446    o added printMapIncludesZeros to EEPARMS namelist
1447    
1448    checkpoint53a_post
1449    o restore TAMC compatiility for exf_constants.h
1450      (no usage of _d in .h)
1451    o Additional storing in KPP in an attempt to fix
1452      TAMC problem with adjoint of KPP code.
1453      (no success...)
1454      Identical code works fine with TAF.
1455    o Fixed verification/natl_box_adjoint experiments.
1456      Initial conditions for Experiments 4 and 5 are now
1457      set to "SEAICE_initialHEFF=0", which is more reasonable,
1458      and hence gives results closer to that of Experiment 2.
1459      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1460    
1461    checkpoint53
1462    o stable checkpoint with up to date adjoint
1463      TLM tests only run for 1st grdchk at the moment. Its unclear if
1464      this is a code problem or a problem with resetting code for g_
1465      variables that is being autogenerated wrong.
1466      Otherwise:
1467       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1468       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1469         are both still in chaos following their security messes.
1470    
1471    checkpoint52n_post
1472    o various build (mostly genmake2) changes including:
1473      - ability to build/run more easily within Cygwin and MacOS X
1474      - more complicated Makefiles with a stronger dependence on Gnu Make
1475    o pkg/seaice modifications
1476      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1477        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1478        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1479      - changed proxy for geostrophic velocity and updated
1480        verification/lab_sea/results/* accordingly
1481      - removed ADI dynamic solver from pkg/seaice
1482      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1483        they caused a segmentation fault under certain circumstances
1484      - removed unused field WATR
1485    o bug fix in exf-package:
1486      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1487         now reflect that.
1488    o small fixes in the cal-package:
1489      - set reference date to first of January for the 'model'-calendar
1490      - failing of cal_CheckDate in cal_FullDate now actually results in a
1491        warning
1492    o small modifications in exf-package to increase flexibility:
1493      - change climtempfreeze from a constant to a runtime parameter that
1494        is specified in data.exf_clim (default = -1.9)
1495      - introduce runtime parameter windstressmax (default = 2.0) that is
1496        specified in data.exf
1497    o fix in pkg/thsice:
1498      - update Evap (Tsf changes) to be consistent with Latent heat flux
1499      - maintain snow precipitation unchanged (even if Tsf >=0).
1500     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1501    
1502    checkpoint52m_post
1503    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1504      this does not change any of the results, because myIter=0 in swfrac always
1505      lead to jwtype=2 (the default anyway), but the call makes little sense
1506      as a default
1507    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1508    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1509      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1510    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1511    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1512    o extending useSingleCpuIO option to work with new exch2 I/O format
1513      - old-style, missing-tile I/O is still accessible by defining CPP
1514        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1515    o monitor package can write to NetCDF files and/or STDOUT
1516    o fix re-definition bug in MNC_GRID_INIT_ALL()
1517    o doc/api_reference added
1518      - a framework for building an API Reference Manual using all
1519        the "protex" comments embedded in the code
1520      - see pkg/generic_advdiff, pkg/mnc for examples
1521    o MNC:
1522      - make myThid the last argument for all subroutines
1523      - new default for the grid files: NO halos
1524      - add useMNC and other run-time flags
1525      - separate per-file-group handling of the unlimited dimension
1526      - early initialization of MNC w/ flags read at the eeboot stage
1527        and lookup tables set in initialize_fixed
1528      - write all MNC output to a freshly-created directory
1529    o thermodynamics sea-ice (thsice) is now tested with testreport.
1530    o test exp. advect_cs: use the standard cs32 grid ; update output.
1531    o Added functionality to grdchk:
1532      pick global i,j,k position (or nearest wet) where to perform check.
1533    
1534    checkpoint52l_post
1535    o new land formulation:
1536      a) use ground enthalpy as prognostic variable to ensure exact
1537         energy conservation.
1538      b) account for water temperature and for latent heat of freezing
1539         in all processes (rain, run-off, ground storage)
1540      c) compute surface and ground temperature implicitly.
1541    o aim_v23 modification for new land model:
1542      a) Treat separately land / ocean / sea-ice surface fluxes
1543         to allow implicit computation of land & sea-ice surface temp.
1544      b) add snow precipitation.
1545    checkpoint52l_pre
1546    
1547    o fix problem (when 1 tile is empty) in min/max monitor.
1548    o fix bug in timeAve (u,vZetatave in common block)
1549    o no restoring terms under ice for pkg/seaice
1550    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1551    o bug fix for pkg/seaice pickups
1552    o change MNC call locations and add coordinate attributes
1553    o mask vorticity at the corner ; affects global_ocean.cs output
1554    o fix ini_curvilinear_grid ; test CS experiments with mpi
1555    o aim.5l_cs: modify sea-ice fraction input file ; update output
1556    o exf: Adding simple range check routine for exf fields after read
1557    
1558    checkpoint52k_post
1559    o removed top-level directory "diags"
1560      - we migrated these functions to pkg/timeave a long time ago
1561    o fixed bug introduced in pkg/monitor
1562    o accuracy ctrlprec = 32 insuffient for gradient checks using
1563      averaged fields (I/O via cost_averages)
1564      -> use ctrl.h in active_file*.F to control I/O precision.
1565    o paramter list of CALL ADTHE_MAIN_LOOP
1566    o added initial do_the_model_io to ecco
1567    o set all ...Freq to zero after cost_final
1568      taveFreq, dumpFreq, pChkptFreq
1569    o MAIN and ECCO differentiability restored
1570    
1571    checkpoint52j_post
1572    o fix nchklev in tamc.h for global_ocean...
1573    o Bringing flow and store directives up-to-date
1574    o Really weird thing!
1575      call do_the_model_io from the_main_loop with parameters
1576      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1577      TAF places a faulty re-call of initialise_varia
1578      after cost_final call which should not be there!
1579    checkpoint52j_pre
1580    
1581    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1582      error messages
1583    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1584    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1585      debug output
1586    o modfied mdsio_writefield.F to handle non-global files under exch2
1587    o update AIM Cubed-Sphere exp (aim.5l_cs):
1588      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1589    o update AIM Equatorial Channel exp:
1590      use standard aim_v23 pkg and change the SST fields to be more realistic.
1591    o globalFile now works with exch2
1592    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1593      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1594    o limit timeave output for hi-res integrations
1595    
1596    checkpoint52i_post
1597    o removed CPP_EEOPTIONS.h from verification/*/code
1598    o updated the tiling for global_ocean_pressure
1599    checkpoint52i_pre
1600    
1601    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1602      the old pkg/aim).
1603    
1604    checkpoint52h_pre
1605    o shortened offending lines in exch2_send_rx?.template
1606    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1607    o genmake2: add build & execute test for NetCDF code
1608    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1609      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1610    o added useSingleCPUIO flag to monitor.F and mon_out.F
1611    o added temporary hack for sea-ice dynamics on the cube:
1612      metric terms are ignored and it is assumed that
1613      there is no sea-ice on cube faces 1, 2, 4, and 5.
1614    
1615    checkpoint52f_post
1616    o added exch2 cube routines to pkg/exch2
1617    o modified hs94.cs-32x32x5 to use it
1618    o added new grid files to hs94.cs-32x32x5
1619    checkpoint52f_pre
1620    
1621    checkpoint52e_post
1622    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1623      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1624    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1625      to work with implicit vertical advection and AB ;
1626    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1627    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1628     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1629    checkpoint52e_pre
1630    
1631    o fix bug in impldiff when Nr=1 or Nr=2.
1632    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1633    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1634    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1635      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1636    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1637    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1638    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1639    
1640    checkpoint52d_post
1641    o re-tiled many expts to allow comparison in multi-processor mode
1642      - updated output accordingly
1643      - changed hs94.128x64x5 to use intial T from file rather than use the
1644        random number generator
1645    o add infrastructure in model routines for fizhi and gridalt packages
1646    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1647    o changes to permit hi-res, cubed-sphere, configuration
1648      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1649      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1650      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1651        of surface winds for the cube
1652      (A verification experiment, based on global_ocean.cs32x15, but with
1653       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1654       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1655       complete with example surface forcing files and matlab scripts to look
1656       at the output and compare it with that of global_ocean.cs32x15.)
1657    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1658       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1659       to conform to the common rule.
1660    o check-in the first version of the coupler + interfaces for multi-components
1661       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1662       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1663       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1664       - ocean and atmos. share the same horizontal grid (no interpolation).
1665       - exchanges between component and coupler is done in forward_step
1666    o new verification experiment, cpl_aim+ocn:
1667       coupled ocean - AIM atmosphere on cs32 grid.
1668    
1669    checkpoint52d_pre
1670    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1671    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1672    
1673    checkpoint52c_post
1674    o Fixing OPTIONS files for use of exf:
1675      - ALLOW_ECCO not needed
1676      - ECCO_CPPOPTIONS.h should not be included from
1677        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1678        as has been the case in the past
1679      - All cal/exf related options are currently set in
1680        single header file. Should remain so until we
1681        agree on a consistent new policy.
1682    o Removed all CPP options for cal package.
1683      cal has no more CPP options.
1684    o modified STOREs in GAD_ADVECTION
1685    o corrected key comp. for passkey
1686    
1687    checkpoint52b_post
1688    o new version: "thsice" of thermodynamic sea-ice pkg:
1689     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1690     - modify fluxes but do not change theta directly;
1691     - light cleaning of bulk_force pkg (still needed with thsice).
1692     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1693       + output_thsice.txt to test thsice & bulk_force pkgs.
1694    o put back grid & coriolis monitor output.
1695    checkpoint52b_pre
1696    
1697    o call "do_the_model_io" at the beginning (=> dump initial state)
1698    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1699    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1700      (need info on NUMBER_OF_PTRACERS)
1701    o missing PTRACERS headers in some routines
1702    o default tamc.h in pkg/autodiff supposed to crash
1703      to ensure proper customization
1704    
1705    checkpoint52a_post
1706    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1707      - moved surfaceTendencyTice from pkg/seaice to main code
1708      - subroutine FREEZE_SURFACE now limits only surface temperature
1709        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1710        => new output.txt for global_ocean.cs32x15 & global_with_exf
1711      - keep the old version of FREEZE for backward compatibility;
1712        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1713      - corresponding modifs for TAF directives
1714    o added surface flux output variables to TIMEAVE_STATVARS
1715    o time-averaged output for pkg/ptracers
1716    o fix problem with ECCO-related divided adjoint
1717      snapshot file was missing some ad-variables,
1718      but no warning issued by TAF
1719    
1720    checkpoint52a_pre
1721    o some bug fixes for #undef REAL4_IS_SLOW
1722    
1723    checkpoint52 = ecco_c52_e35
1724    o after testing adjoints of checkpoint51u_post
1725    
1726    checkpoint51u_post
1727    o this is the post-merge tag of the ecco-branch
1728      (needs another clean checkout and re-testing)
1729    o various natl_box_adjoint configs and results
1730      but no input fields
1731    o obcs adjoint not yet merged!
1732    o adding ECCO global 1x1 and 2x2 degree configs
1733    o updated/extended some store directives for seaice
1734    o pkg/ecco now containes ecco-specific part of cost function
1735    o top level routines the_main_loop, forward_step
1736      supersede those in model/src/
1737      previous input data.cost now in data.ecco
1738      (new namelist ecco_cost_nml)
1739    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1740    
1741    checkpoint51t_post
1742    o this is the pre-merge tag of the ecco-branch
1743    
1744    checkpoint51s_post
1745    o cleanup: removed various obsolete #define-s
1746    o pkg/grdchk
1747      - renamed 'ph-grd 3' to 'grad-res'
1748      - merged from ecco-branch
1749        (remaining bug fixes for obcs gradient checks)
1750      - additional high-precision output for testreport
1751        (grep for 'precision_grdchk_result')
1752    
1753    checkpoint51r_post
1754    o cleaned up or removed CPP_OPTIONS.h files
1755    o updated results for some of the tests to reflect the new
1756      optfiles (-ieee: -O0 instead of -O3)
1757    
1758    checkpoint51q_post
1759    o cd_code:
1760      - moved cd_scheme.F -> cd_code_scheme.F
1761      - separate read_checkpoint from cd_code_ini_vars.F
1762      - separated cd_code part from write_checkpoint
1763      - updated AD_SOURCE, generated .flow
1764      - added CD_CODE_VARS.h to the_main_loop
1765      - Moving cd_code specific store dir.s to pkg/cd_code
1766    o ctrl package totally restructured
1767      - pack/unpack now optional and decoupled from
1768        xx_/adxx_ I/O
1769      - ctrl_pack/unpack cleaned
1770        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1771      - confined inclusion of AD_CONFIG.h to where necessary.
1772    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1773    
1774    checkpoint51p_post
1775    o create initial cd_code package
1776      - WARNING: the initialization of fields within packages
1777        is broken because INI_FIELDS (where READ_CHECKPOINT is
1778        called) is called *before* PACKAGES_INIT_VARIABLES.
1779        This seems to be backwards since
1780        1) its important to initially zero the entire field including
1781           the "halo" region
1782        2) zeroing needs to be done *before* reading pickup info
1783           and the pickup call might or might not happen in any
1784           particular run
1785      - this needs an overhaul for R2
1786    o cleanup verification/*/code/GMREDI_OPTIONS.h
1787    o cleanup testreport
1788    
1789    checkpoint51o_post
1790    o bringing AD-related verif's up to date with genmake2
1791      - carbon/
1792      - global_ocean.90x40x15/
1793      - hs.94.1x64x5/
1794      - (front_relax/ )
1795    o (more) consistent directory structure for AD-related verif.'s
1796    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1797    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1798    o bug fix in find_alpha.F for MDJWF:
1799      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1800        change rho -> rho-rhoConst
1801      - replace call find_rho to find_rhonum
1802    o initialisation of rFlx extended to full array (required by TAF)
1803      and shifted to thermodynamics
1804    o removed PTRACERS.h in ptracers routine
1805    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1806    o Correcting initialisations for fVerU, fVerV.
1807    o helping TAF to recognize dependency on kUp for
1808      fVerU, fVerV
1809    o Replacing delZ by delR in pkg/ctrl/
1810    checkpoint51o_pre
1811    
1812    o undid all of cp51 pending some cleanups and discussion
1813    o added the [#include "AD_CONFIG.h"] statement to all files that need
1814       it for adjoint/tl #defines
1815     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1816     o removed tools/genmake since it no longer works
1817    
1818    checkpoint51n_post
1819    o modifications to make FREEZE flux visible to pkg/kpp
1820      - moved surfaceTendencyTice from pkg/seaice to main code
1821      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1822      - subroutine FREEZE now limits only surface temperature
1823        (this means new output.txt for global_ocean.90x40x15,
1824         global_ocean.cs32x15, and global_with_exf)
1825    o added surface flux output variables to TIMEAVE_STATVARS
1826    
1827    checkpoint51n_pre
1828    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1829    o added [#include "AD_CONFIG.h"] to all files that use the following
1830      defines:
1831      - ALLOW_ADJOINT_RUN
1832      - ALLOW_TANGENTLINEAR_RUN
1833      - ALLOW_ECCO_OPTIMIZATION
1834    
1835    checkpoint51m_post
1836    o incorporating changes to get TAMC/TAF working in genmake2
1837      - added new TAMC/TAF targets to the Makefile
1838      - various cleanups related to package handling
1839      - these changes should have no impact on the forward model
1840    
1841    checkpoint51l_post
1842    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1843     - faster algorithm for cal_addtime.F
1844     - higher precision arithmetic, where needed
1845     - pkg/exf *startdate variables changed from calendar date to
1846       model integration time
1847    
1848    checkpoint51l_pre
1849    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1850    o enable to apply restoring on S & T only in a latitude band.
1851    o update output (external_forcing_surf modif. change truncation errors)
1852       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1853    
1854    checkpoint51k_post
1855    o change default to: useNHMTerms=.FALSE.
1856     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1857       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1858     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1859        exp1, ideal_2D_oce
1860     - change data file of oceanic exp (leave the results unchanged for now)
1861       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1862    o set gravitySign automatically according to the vertical coordinate used
1863      (and change sign: back to "logical" value: +1 when R increases downward)
1864    o added an include barrier to the default CPP_OPTIONS.h and
1865      removed the #include "PACKAGES_CONFIG.h" from it
1866    o fix a bug in mom_fluxform (from chk51j_post)
1867    
1868    checkpoint51j_post
1869    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1870    o adjusted some flow directives (dynamics, thermodynamics)
1871    o added cubed-sphere case to test cost function
1872    o heckpoint_lev?_directives.h now include
1873      pkg-specific directives, whenever those are enabled.
1874    o Moving pkg-specific flow directives to corresponding pkg
1875      Moving pkg-specific differentiation list to corresponding pkg
1876      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1877      ---> conventions are
1878           - pkg_ad.flow
1879           - pkg_ad_diff.list
1880           - pkg_ad_check_lev?_dir.h
1881    
1882    checkpoint51i_post
1883    o merge of the branch-genmake2
1884      - knowingly breaks the older genmake
1885      - automatic generation of all ALLOW_${PKG_NAME} defines
1886      - new testreport supersedes older testscript
1887    o large number of package inclusion and header cleanups
1888    checkpoint51i_pre
1889    
1890    o new output for adjoin of global ocean vector invariant
1891    o fix for checkpoint of thermodynamic seaice and bulk_force
1892    o Steph gchem various cleanups
1893    
1894    checkpoint 51h_pre
1895    o fixed some single quotes
1896    o modify gchem pkg to be more versatile
1897    o modifications to clean up dic pkg
1898    o add pkg/cfc
1899    
1900    checkpoint51g_post
1901    o provide links for ARPACK and ADM*TLM
1902    o start removing verification/vero/
1903    o update AD-related stuff
1904      (in particular some IF-statements in model/src/ routines)
1905    o adding to verification/global_ocean.90x40x15/ adjoint of
1906      vector invariant setup
1907    
1908    checkpoint51f_post
1909    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1910    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1911      of tracer Green's fucntions for ocean inversion project.
1912    
1913    checkpoint51f_pre
1914    o Added on-the-fly spatial interpolation capability
1915        "USE_EXF_INTERPOLATION" to pkg/exf.
1916      - This is a temporary Cartesian-grid hack until
1917        the super-duper ESMF coupler becomes available.
1918      - See verification/global_with_exf/README for usage example.
1919      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1920        flags and modified pkg/seaice accordingly.
1921    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1922        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1923        non-local transport term.
1924    
1925    checkpoint51e_post
1926    o pkg/mom_vecinv:
1927      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1928      - add time-ave diagnostic of vorticity advection.
1929    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1930    o atmospheric geopotential: - include water vapor effect;
1931                                - use p^kappa in p* scaling.
1932    o land pkg: read initial state from files.
1933    o AIM : add stratospheric drag in the upper level
1934    
1935    checkpoint51d_post
1936    o change function ILNBLNK (=> last non-blank char.) to return zero
1937      (instead of the string length) when the string. char is empty
1938    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1939    o modif's to restore TAMC compatibility
1940      - avoid "_d" constructs in PARAMETER declarations
1941      - avoid interrupting lines by comment lines
1942    o Use cluster local disks for purely local I/O
1943      vs. globally visible disks needed for ctrl stuff
1944      (merged from ecco-branch)
1945      - new active_file_loc... and mdsio_..._loc routines
1946      - affected packages: autodiff, ctrl, grdchk, mdsio
1947    
1948    checkpoint51c_post
1949    o introducing integer flag debugLevel
1950      - debLevZero: suppress all output
1951      - debLevA: standard
1952      - debLevB: equivalent to current debugMode=.TRUE.
1953    o introducing pathname variable mdsioLocalDir for mdsio
1954      that can be specified at runtime
1955      (relevant for cluster I/O to local disk)
1956    `
1957    >>>checkpoint51b_post
1958    adjoint of ptracers
1959    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1960    o extended state in checkpoint_lev?, etc.
1961    o alternative ctrl/cost with tr1 or ptracer
1962    o new comlev1_bibj_ptracers
1963    o new ptracers.flow
1964    o made ptracers_forcing same as external_forcing_s
1965    o added verification for adjoint with ptracers
1966      - adm. grdchk fail so far
1967      - tlm. grdchk OK
1968      - checked tapelev/comlev recomputations: OK
1969    <<<checkpoint51b_pre
1970    
1971    checkpoint51a_post
1972    o added code for biogeochemistry package
1973      - new pkgs: dic, gchem
1974      - new subroutine in ptracers
1975    o modify code for biogeo packages
1976      - in model/src and pkg/ptracers
1977    
1978    checkpoint51
1979    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1980      - autodiff, ctrl, exf, grdchk, seaice
1981      kept separate packages
1982      - cost, ecco, obcs
1983    o updating verification/internal_wave, verification/lab_sea
1984      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1985    
1986    checkpoint50i_post
1987    o Preparing next differentiable checkpoint and sync
1988      of MAIN vs. ecco-branch
1989      - 1st step: this one is differentiable
1990      - 2nd step: next(! not this) checkpoint will have updated packages
1991                  from ecco-branch)
1992    
1993    checkpoint50h_post
1994    o new package "land": provide surface BC for AIM.
1995    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1996    o AIM: use true log-P extrapolation for near surface temp (= as in
1997        F.Molteni paper) ; update aim.5l_cs output.
1998    o New variable in PARM03 for more flexible pickups
1999    o somewhat cleaned package initialisation sequence for
2000      ctrl/ cost/ ecco/ in packages_... routines
2001    
2002    checkpoint50g_post
2003    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2004      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2005      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2006        made the default because of faster convergence than ADI
2007    
2008    checkpoint50f_post
2009    o exf totally restructured
2010      - replaced all exf_set_ routines by one generic exf_set_gen.F
2011        and made sure it's still differentiable
2012      - split exf_getffields.F into new exf_bulkformulae.F
2013      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2014      - updated adjoint/makefile and relevant verif. accordingly
2015    
2016    checkpoint50f_pre
2017     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2018          + change Evap over land. (update aim.5l_cs output)
2019     o added missing .cvsignores and made uniform across expts
2020     o changed configuration of tidal_basin_2d expt
2021     o added pkg/debug functions for tracing code in fatal crashes
2022     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2023     o new fn in pkg/monitor to stop model if solution grows too big
2024     o removed lots of single quotes from comments
2025    
2026    checkpoint50e_post
2027    o make KPP work with PTRACERS
2028     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2029       nearly a copy of kpp_transport_s
2030     - there is no analogue to SurfaceTendencyS, so I have to use
2031       gPtr(of the surface layer) instead
2032    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2033    checkpoint50e_pre
2034    
2035    checkpoint50d_post
2036    o change kpp output from multiple-record state files to single-record state
2037      files analogous to write_state.F
2038    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2039      analogous to the cg2d-related output.
2040    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2041      so that writing to internal file fn (with length 512) fails.
2042    checkpoint50d_pre
2043    
2044    checkpoint50c_post
2045    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2046    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2047    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2048    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2049    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2050    
2051    checkpoint50c_pre
2052    Merging from release1_p13:
2053    o bug fix for pkg/seaice dynamic solver
2054    o Added SEAICE_initialHEFF to pkg/seaice
2055    
2056    checkpoint50b_post
2057    o store u*,v* in gU,V instead of in guNm1,gvNm1
2058    o in order to put the momForcing out of the Adams-Bashforth:
2059      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2060      to timestep.F
2061    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2062    o re-generate output for highly sensitive test-exp:
2063       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2064    
2065    checkpoint50b_pre
2066    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2067    o corrected CPP option mismatch in exf_Bulk... functions for case
2068      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2069    
2070    checkpoint50a_post
2071    o Bug fix for merging between c50 and KPP.
2072      ikey was passed from thermodynamics to kpp_calc via
2073      common block rather than being recomputed in kpp_calc,
2074      in contradiction with new key itdkey.
2075      New key ikppkey created, and tamc.h headers updated.
2076    
2077    checkpoint50
2078    - 2nd step of merge with ecco-branch:
2079      merge changes in ecco-branch back into main trunk
2080    - bug fix in find_alpha
2081    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2082    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2083    - merged some sliced AD support routines
2084    
2085    checkpoint49
2086    merged from ecco-branch:
2087    o exf:
2088      - Enable initialisation of forcing fields to constant
2089        (runtime) values.
2090      - in exf_getffields.F
2091        Reduce i-/j-loop to interior domain, discarding overlaps.
2092        That also fixes wrong TAF-key computations for key_1, key_2
2093        with bulf formulae.
2094      - exf_init.F modify #ifdef for exf_init_evap
2095      - exf_getffieldrec.F, ctrl_getrec.F
2096        The following INT-usages are not safe:
2097          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2098          fldcount = int(fldsecs/fldperiod) + 1
2099        and were modified.
2100    o autodiff: checkpoint_lev...
2101      - updated storing for bulk formulae (some arrays were missing)
2102      - added state for seaice package
2103      - synchronized with main branch
2104    o DIVA:
2105      Modif.s in
2106      - the_main_loop.F
2107      - the_model_main.F
2108      and added cost_final_restore.F cost_final_store.F
2109      o With these changes, it is possible to fully separate
2110        the first forward run to compute the cost function (mdthe_main_loop)
2111        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2112        into separate model executions.
2113        This enables better tuning of DIVA to given queue sizes.
2114      o Loss of cost function value in consecutive DIVA runs is
2115        fixed by storing to 'costfinal' file.
2116      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2117        beginning/end of adjoint integration is accounted for.
2118      The current changes apply to TAF-1.4.26.
2119      TAF has one remaining bug, requiring one manual change
2120      (see MITgcm manual).
2121    o cal: synchronized between MAIN and ecco-branch
2122    
2123    checkpoint48i_post
2124    o Changes to restore differentiability of code w.r.t. previous tag
2125      (mostly adding new routines to make list and replacing
2126      pressure by totPhiHyd).
2127    o Updated and merged grdchk package
2128      - has both ADM and TLM checks
2129      - works for single- and multi-proc.
2130      - output cleaned
2131      - worked successfully for parallel DIVA
2132    o genmake:
2133      - Adding -platform=SP4
2134      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2135    o Modif. for DIVA:
2136      ctrl_unpack should not be called in intermediate DIVA interval.
2137      (similar thing would apply for active files such as
2138      tbar, sbar, psbar, which should not be reinitialised;
2139      only relevant for ecco-branch)
2140    
2141    checkpoint48h_post
2142    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2143    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2144    o Added SEAICE_initialHEFF to pkg/seaice
2145    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2146    
2147    checkpoint48g_post
2148    --- EOS:
2149    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2150      store total Potential in totPhyHyd for diagnostics & EOS.
2151    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2152    --- Pressure/geopotential gradient:
2153    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2154    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2155      ( changes results of global_ocean_pressure )
2156    o NLFS + z-coord.: add eta*Rho' contribution.
2157    o accurate phiHyd when using interface-W at the middle between 2 centers
2158     ( changes results of ideal_2D_oce )
2159    o includes r* 2nd term in potential gradient.
2160    
2161    checkpoint48f_post
2162    Merging from release1_p12:
2163    o Modifications for using pkg/exf with pkg/seaice
2164      - improved description of the various forcing configurations
2165      - added basic radiation bulk formulae to pkg/exf
2166      - units/sign fix for evap computation in exf_getffields.F
2167      - updated verification/global_with_exf/results/output.txt
2168    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2169      (SBO) core products, including oceanic mass, center-of-mass,
2170      angular, and bottom pressure (see pkg/sbo/README.sbo).
2171    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2172      to avoid negative values in shallow regions.
2173      - updated verification/natl_box/results/output.txt
2174      - updated verification/lab_sea/results/output.txt
2175    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2176    o Added useSingleCpuIO option (see PARAMS.h).
2177    o Updated useSingleCpuIO option in mdsio_writefield.F to
2178      work with multi-field files, e.g., for single-file pickup.
2179    o pkg/seaice:
2180      - bug fix in growth.F: QNET for no shortwave case
2181      - added HeffFile for specifying initial sea-ice thickness
2182      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2183    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2184      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2185    o pkg/seaice:
2186      - adjoint-friendly modifications
2187      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2188    
2189    checkpoint48e_post
2190    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2191    o dynamics: change definition of computational domain & adapt mom_fluxform
2192      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2193    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2194        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2195        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2196        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2197        inverted_barometer solid-body.cs-32x32x1
2198      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2199    
2200    checkpoint48d_post
2201    o in preparation for r*:
2202     a) use pre-computed gradient of hydrostatic potential:
2203        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2204     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2205        => affects results of glob_oce_pressure (different truncation error)  
2206      update output.txt of ideal_2D_oce & global_ocean_pressure
2207    
2208    checkpoint48d_pre
2209    o in preparation for r*:
2210      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2211      pass the 2 comp. of the grad. as arguments to momentum S/R.
2212      but for the moment, only used if it does not change the results.
2213    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2214    
2215    checkpoint48c_post
2216    Modifications in treatment of initial flux forcing controls
2217    to avoid extra storing of flux fields.
2218    
2219    checkpoint48c_pre
2220    o Added tidal_basin_2d experiment (currently 1D!)
2221    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2222    
2223    checkpoint48b_post
2224    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2225     (modification to pressure gradient not yet implemented)
2226    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2227      (for U & V) that are used for vertical advection of momentum.
2228    
2229    checkpoint48a_post
2230    o In preparation for r*, use temp. array to compute vertical transport
2231       in flux-form momentum pkg. => change results of few test-exp.
2232      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2233                        lab_sea, natl_box & plume_on_slope
2234    
2235    checkpoint48
2236    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2237    
2238    checkpoint47j_post
2239    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2240    o moved adexch from forward_step to addummy_in_stepping
2241    o added exch in ctrl_map_...
2242    o aveFreq.=0. at end of cost_final to avoid overwrite in
2243      reverse checkpointing loop
2244    o Yet more changes in gmredi:
2245      * adgmredi_calc_tensor
2246        avoiding all recomputation of gmredi_slope_limit
2247      * adgmredi_x/y/rtransport
2248        added flag for excessive storing to avoid recomp. of
2249        u/v/rtans, dTdx/y/z
2250        -> this is not really necessary and very memory-consuming
2251      * adgmredi_slope_psi:
2252        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2253      * gmredi_slope_limit
2254        re-activated full calculation of taperfct for case 'ac02'
2255    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2256    
2257    checkpoint47i_post
2258    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2259    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2260      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2261    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2262    o gmredi: fix few bugs.
2263    
2264    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2265    This will be a good checkpoint to plug into the ecco-branch.
2266    o few modif.'s to get latest version adjointed
2267      (mainly kick out code in ini_linear_phisurf)
2268    o modif's to run adjoint with exactConserv
2269    o case GM_BOLUS_ADVEC should be cleaned
2270      S/R gmredi_slope_psi should be cleaned
2271    o verification/carbon now has exactConserv=.TRUE.
2272    
2273    checkpoint47g_post
2274    o time-average AIM output: becomes independent from statvars time-average
2275      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2276    o After TAF bug fix:
2277      Tested adjoint of gmredi package.
2278      Tests were done with checkpoint47 rather than with latest
2279      checkpoint47f_post since the latter is broken for the adjoint
2280      verification/carbon/ contains both ADM and TLM gradient checks.
2281    Here they are, before they get changed/lost/stolen.
2282    Mostly modif.'s to fix numerical sensitivities.
2283    Gradient checks OK for
2284    - GM_taper_scheme:
2285      * clipping
2286      * ac02
2287      * linear
2288      * glw91
2289      * dm95
2290      * ldd97
2291    - GMREDI_OPTIONS:
2292      * GM_VISBECK_VARIABLE_K
2293      * GM_NON_UNITY_DIAGONAL
2294      * GM_EXTRA_DIAGONAL
2295      * GM_BOLUS_ADVEC
2296    in conjunction with data.gmredi parameters to be checked in
2297    in a few minutes under verification/carbon/code/
2298    
2299    checkpoint47f_post
2300    Merging from release1_p10:
2301    o modifications for using pkg/exf with pkg/seaice
2302      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2303        and SEAICE_EXTERNAL_FLUXES
2304      - pkg/exf CPP options EXF_READ_EVAP and
2305        EXF_NO_BULK_COMPUTATIONS
2306      - usage examples are Experiments 8 and 9 in
2307        verification/lab_sea/README
2308      - verification/lab_sea default experiment now uses
2309        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2310    
2311    checkpoint47e_post
2312    o created a tag prior to creating a branch
2313    
2314    checkpoint47d_post
2315    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2316      at the bottom boundary had an erroneous half slip boundary condition
2317    o added bottom drag and no slip boundary condition capabilities to
2318      oceanic pressure coordinates code
2319    o added new verification experiment global_ocean_pressure, this experiment is
2320      also described in the tutorial section of the manual
2321    checkpoint47d_pre
2322    
2323    checkpoint47c_post
2324    o Added a verification experiment for a global cubed-sphere ocean run
2325      -  verification/global_ocean.cubed32x32x30
2326      -  uses pkg/therm_seaice and pkg/bulk_forcing
2327    
2328    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2329    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2330      when using P-coordinate; only implemented for atmospheric config.
2331    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2332      NOTES: requires option NONLIN_FRSURF to be "#define".
2333    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2334    
2335    checkpoint47b_post
2336    Merging from release1_p9:
2337    o pkg/seaice
2338      - removed GOTO's and added taf directives
2339      - double precision constants to reduce the g77 (Linux)
2340        to F77 (SGI) differences reported in release1_p8
2341    o tools/genmake
2342      - added SGI options
2343    o verification/testscript
2344      - updated to that of checkpoint47a_post
2345    o verification/global_ocean.90x40x15/input/eedata
2346      - modified for SGI f77 compatibility
2347    o verification/lab_sea
2348      - added description of sea-ice model
2349      - added missing matlab routines
2350      - added test of thermodynamics parallelization
2351    
2352    checkpoint47a_post
2353    o new pkg: aim_v23
2354     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2355       for now, keep the same surface forcing as before.
2356     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2357     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2358     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2359    o add diagnostic of surface correction term in monitor output
2360    
2361    o bulk_force and therm_seaice
2362    - Two packages:  bulk_force (Bulk forcing)
2363      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2364    - Earlier integration from Stephaine Dutkiewicz
2365      and Patrick Heimbach.
2366    - Two ifdef statements for compile time,
2367       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2368    
2369    checkpoint47
2370    differentiable version of checkpoint46n_post
2371    o bug fix in quasihydrostaticterms
2372    o * "clean" adjoint code (in terms of extensive recomputations)
2373        can now be obtained for all GMREDI options (i.e. for
2374        - GM_VISBECK_VARIABLE_K
2375        - GM_NON_UNITY_DIAGONAL
2376        - GM_EXTRA_DIAGONAL
2377        - GM_BOLUS_ADVEC )
2378      * However, wrong gradient check problem remains unsolved.
2379      * New CPP options have been introduced for different
2380        tapering schemes
2381    o external_fields_load now part of differentiation list
2382    o pressure needs multiple storing;
2383      would be nice to have store_pressure at beginning or
2384      end of forward_step, e.g. by having phiHyd global (5-dim.)
2385      (NB: pressure is needed for certain cases in find_rho,
2386      which is also invoked through convective_adjustment).
2387    o recomputations in find_rho for cases
2388     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2389    o #define ATMOSPHERIC_LOADING should be differentiable
2390    o ini_forcing shifted to begining of initialise_varia
2391    o Incorporating QNVS line search routines into MITgcm
2392      (this is separate code, and therefore not under pkg)
2393      lsopt/, optim/
2394    o Updated verification/carbon/
2395      - #define GM_VISBECK_VARIABLE_K
2396      - GM_taper_scheme    = 'ldd97'    
2397    
2398    checkpoint46n_post
2399    Merging from release1_p8:
2400    o verification/natl_box:
2401      updating new external_fields_load routine
2402    o New package: pkg/seaice
2403      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2404      The sea-ice code is based on Hibler (1979-1980).
2405      Two sea-ice dynamic solvers, ADI and LSR, are included.
2406      In addition to computing prognostic sea-ice variables and diagnosing
2407      the forcing/external data fields that drive the ocean model,
2408      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2409      The implied surface heat flux is then stored in variable
2410      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2411      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2412      non-local transport term.  Because this call precedes model
2413      thermodynamics, temperature under sea-ice may not be "exactly" at
2414      the freezing point by the time theta is dumped or time-averaged.
2415      N.B.: fairly large differences in accuracy occur across
2416            different platforms/compilers; comparison between
2417            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2418            generated output gives:
2419       T           S           U           V
2420      C D M    c        m  s        m  s        m  s        m  s
2421      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2422      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2423      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2424    
2425      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2426    o GAD:
2427      - generated new common blocks to account for call of
2428        same gad routines with differing traceridentities
2429        (needed to modify tracerIdentity indices in GAD.h)
2430      - generated separate common blocks for case useCubedSphereExchange
2431        (Department of Futurology)
2432      - parameter lists to gmredi_?transport: added tracerIdentity
2433      - added new key indices to tamc.h
2434    o external_fields_load:
2435      - added this routine to TAF list
2436      - needed to make some common blocks global and additional storing
2437        along the same lines as exf package (checkpoint_lev?_directives.h)
2438    o exf:
2439      updated external forcing package
2440      - bug fixes carried over from ecco-branch
2441        (missing OBCS_OPTIONS.h in two routines)
2442      - enable easy to use "no forcing".
2443      - added exf I/O for atmospheric loading
2444      - added exf I/O for runoff data
2445      - transfered scaling between exf <-> MITgcm to exf namelist
2446    o Adding new verification experiment global_with_exf.
2447      This verification experiment is almost identical to the
2448      global_ocean.90x40x15 experiment, except that it uses
2449      the exf (and cal) package instead of the
2450      external_fields_load routine (cf README file).
2451    
2452    checkpoint46m_post
2453    o modified testscript to return -- when there are no lines of "%MON" output
2454    o added new flag "quasiHydrostatic" for QH mode
2455      and new routine quasihydrostaticterms()
2456    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2457      New routine: mom_u_coriolis_nh()
2458    o fixed sign of non-hydrostatic metric terms in u and v equations.
2459      Depend on correct sign of gravitySign.
2460    o added work.pc* to .cvsignore in aim directories using ifc
2461    o introduced flag for controllin non-hydrostatic metric terms
2462    o removed gravitySign from PARM04
2463    o switched to g77/ifc from pgf77 in aim experiments
2464    
2465    checkpoint46l_post
2466    o made convective adjustment work with pressure coordinates:
2467     - changed the direction of k-loop in convective_adjustment.F for the
2468       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2469     - adjusted the reference pressure k-index in convective_adjustment.F
2470     - adjusted the convection condition in convect.F (in analogy to
2471       calc_ivdc.F)
2472     - convective_adjustment no longer computes anything on the halos
2473     - removed the warnings about negative salinity from find_rho.F and
2474       find_alpha.F; instead the new routine look_for_neg_salinity, called
2475       at the beginning of find_rho, find_alpha, and find_beta, does a
2476       check of the entire slice, if CPP-option
2477       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2478    checkpoint46l_pre
2479    
2480    checkpoint46k_post
2481    o fixed the verification/global_ocean.90x40x15 experiment:
2482     - new bathymetry (the world according to A., JMC, and M.)
2483     - new initial fields and forcing fields (*.bin files)
2484     - new POLY3.COEFFS (for the next release one should switch to a full
2485       equation of state: JMD95P or MDJWF)
2486     - fixed several errors and redundancies in the data file
2487     - experiment uses looped cells
2488     - added matlab directory with diagnostic scripts for plotting of output
2489    
2490    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2491     - read AIM physics parameters from a file (data.aimphys)
2492     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2493    
2494    checkpoint46j_post
2495    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2496    o move wVel computation at the end of the time step, in S/R integr_continuity
2497    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2498    o update timeave pkg for wVel diagnostic.
2499    checkpoint46j_pre
2500    
2501    checkpoint46i_post
2502    o Clean up AIM package (and keep the results unchanged):
2503      include CPP_OPTION and use IMPLICT NONE in all routines ;
2504      declare all the variables _RL ; use _d 0 for all numerical constants.
2505      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2506    
2507    checkpoint46h_post
2508    o cleaned up the use of rhoNil and rhoConst.
2509      - rhoNil should only appear in the LINEAR equation of state, everywhere
2510        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2511        and the dynamical equations are all divided by rhoConst
2512    o introduced new parameter rhoConstFresh, a reference density of fresh
2513      water, to remove the fresh water flux's dependence on rhoNil. The default
2514      value is 999.8 kg/m^3
2515    o cleanup up external_forcing.F and external_forcing_surf.F
2516      - can now be used by both OCEANIC and OCEANICP
2517    checkpoint46h_pre
2518    
2519     Added code to convert surface volume flux (fresh water) into
2520     a mass flux when using P coordinates in the ocean (OCEANICP).
2521     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2522    
2523    checkpoint46g_post
2524    o Include a new diagnostic variable phiHydLow for the ocean model
2525      - in z-coordinates, it is the bottom pressure anomaly
2526      - in p-coordinates, it is the sea surface elevation
2527      - in both cases, these variable have global drift, reflecting the mass
2528        drift in z-coordinates and the volume drift in p-coordinates
2529      - included time averaging for phiHydLow, be aware of the drift!
2530    o depth-dependent computation of Bo_surf for pressure coordinates
2531      in the ocean (buoyancyRelation='OCEANICP')
2532      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2533        Theta, Salinity, and Pressure in the parameter list. This routine is
2534        presently contained in find_rho.F. This routine does not give the
2535        correct density for 'POLY3', which would be a z-dependent reference
2536        density.
2537    o cleaned up find_rho
2538      - removed obsolete 'eqn' from the parameter list.
2539    o added two new verification experiments: gop and goz
2540      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2541    checkpoint46g_pre
2542    
2543    checkpoint46f_post
2544    o Enable tangent linear (forward mode) gradient checks:
2545      - extended active file handling to g_... files
2546      - added TANGENT_SIMULATION to theSimulationMode
2547      - extended grdchk package accordingly
2548    o added tangent linear setup in verification/carbon/code_ftl
2549    o added adjoint setup in verification/front_relax/code_ad
2550    
2551    checkpoint46e_post
2552    o Added new equation of state -> MDJWF
2553      - EOS of McDougall et al., 2002, JAOT, submitted
2554      - caveat: the equation of state is only valid for a smaller (more
2555        realistic?) range of values than JMD95P/Z and UNESCO
2556      - added masks to the calculation of pressure in store_pressure
2557      - added more check values for density in check_eos (ini_eos.F), some of
2558        the old check values are out of the range of the MDJWF-eos, so don't
2559        expect perfect matches for those
2560    checkpoint46e_pre
2561    
2562    checkpoint46d_post
2563    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2564      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2565      case of pressure coordinates. eosType='JMD95Z' in
2566      combination with buoyancyRelation='OCEANICP' now causes an error.
2567    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2568      in find_alpha/beta.
2569    checkpoint46d_pre
2570    
2571    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2572      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2573    
2574    checkpoint46c_post
2575    o Changes necessary for ocean in p-coordinates
2576     -  Added new buoyancy relation = 'OCEANICP'
2577     -  Added new parameters = gravitySign (this used to be contained inside
2578        the factor dRdZ which I added when we first switched to R coordinates).
2579     X GM/Redi is not compatible (yet)
2580     X bottom drag and no-slip need to be debugged.
2581    checkpoint46c_pre
2582    
2583    checkpoint46b_post
2584    o Added new equation of state -> JMD95Z and JMD95P
2585      - EOS of Jackett and McDougall, 1995, JAOT
2586      - moved all EOS parameters into EOS.h
2587      - new routines ini_eos.F, store_pressure.F
2588    o Added UNESCO EOS, but not recommended because it requires
2589      in-situ temperature (see JMD95)
2590    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2591      unesco.f to be used with POLY3
2592    checkpoint46b_pre
2593    
2594    checkpoint46a_post
2595    o Added (atmospheric) pressure loading
2596      - new field in FFIELDS.h, etc...
2597      - new cpp flag ATMOSPHERIC_LOADING
2598    o Changed hFacC to _hFacC in calc_phi_hyd.F
2599    o Added SHORTWAVE_HEATING to some files for consistency
2600    checkpoint46a_pre
2601    
2602    checkpoint46
2603    further merges from release1_p5
2604    o new ctrl package
2605      - adopted from ECCO environment to enable optimization
2606      - added Eliassen Palm fluxes to controls
2607    o added Eliassen Palm flux controls to gradient check package
2608    o cost package
2609      - Compatible with new ctrl package
2610      - added Eliassen Palm cost hooks
2611      - modif's of existing cost functions
2612    o Adjoint-related bug fixes in kpp:
2613      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2614      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2615    o autodiff package
2616      - flow directives:
2617        + new for S/R do_the_model_io
2618        + enhanced for S/R checkpoint
2619        + new gmredi.flow
2620      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2621        disable adcommon.h/g_common.h by default.
2622      - fixed problem for adjoint of global_max
2623    o modified verification/carbon/
2624    o New setup for adjoint of global_ocean
2625    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2626    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2627    o incorporated hooks for sponge layer code (external_forcing.F)
2628    
2629    checkpoint45d_post
2630    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2631    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2632      (affects plume_on_slope "cg2d" output)
2633    o add new parameter deltaTfreesurf for free-surface time stepping
2634    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2635    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2636    o change phiMin in exp1 (to agree with documentation)
2637    o add new flags:
2638     - T,S forcing inside/outside Adams-Bashforth
2639     - turn off temp,salt advection and/or forcing
2640     - for each tracer, define internal flag for multiDimAdvection & A-B
2641    o monitor: change definition of KE to check conservation of Energy
2642    
2643    checkpoint45c_post
2644    o Removed f90 comments ("!")
2645    o Modified initialisations to enable exf package for MITgcm
2646      (without invoking ECCO_PACKAGE).
2647    o modifications to gradient check package (Martin Losch)
2648      - enable centered differences
2649      - modified format of standard output
2650    
2651    checkpoint45b_post
2652    o cleaned exchange calls in cg2d
2653    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2654    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2655      to configure barotropic setup (Martin Losch)
2656    o moved some initialisations within bi,bj loop in dynamics
2657      (TAF flow dependency)
2658    o in initialise_varia, moved call packages_init_variables
2659      before convective_adjustment_init
2660      (corresponding adjustment of TAF tape initialisation).
2661    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2662    
2663    checkpoint45a_post
2664    o compute Rho over the whole domain (extend iMin,jMin indices)
2665    o specific exchange for X-slice domain (case Ny=1)
2666  o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code  o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2667  o solve_for_pressure : set cg2d_x to zero where OBCS are applied  o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2668    

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