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revision 1.41 by heimbach, Fri Jul 13 18:08:14 2001 UTC revision 1.747 by dimitri, Mon Nov 20 20:06:43 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 diagnostics: rename few diags:
8      s/'PRESSURE'/'RCENTER '/g
9      s/'TICE    '/'oceFreez'/g
10      s/'TAUX    '/'oceTAUX '/g
11      s/'TAUY    '/'oceTAUY '/g
12      s/'SWFLUX  '/'oceQsw  '/g
13      s/DIFx/DFxE/g
14      s/DIFy/DFyE/g
15      and add few ocean-forcing diagnostics:
16      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
17    o modifications to pkg/seaice/growth.F and budget.F, which change results of
18      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
19      as actual snow thickness.  It now refers everywhere to effective snow
20      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
21    
22    checkpoint58r_post
23    o modifications to pkg/seaice/growth.F, which change results of
24      lab_sea experiment: fixes pertain to melting snow over open water, to
25      masking EVAP under sea ice, and to using the correct AREA variable for
26      computations of EVAP, PRECIP, HSNOW, and GHEFF
27    o add ability to read bathy, salt, and theta using MNC (off by def)
28    o add flooding algorithm and advection of HSNOW for pkg/seaice;
29      both are turned off by default and do no change any results
30    o seaice advection with pkg/thsice: a step toward the use of non-linear
31      advection scheme, but #ifdef or commented out for now (requires more EXCH).
32    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
33      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
34      in natl_box (affects results @ truncation level: update output.txt)
35    o multi-threading and IO:
36      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
37      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
38        (needed to work with SingleCpuIO): tested in all verif. exp.
39    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
40      affects the results (but none of the verification test uses this scheme).
41    o Adding some pkg/diagnostics capability to pkg/seaice
42      (will certainly be subject to changes)
43    o ctrl: adding new control variables:
44      lwflux, lwdown, evap, snowprecip, apressure, runoff
45    
46    checkpoint58q_post
47    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
48      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
49      high_res_cube configuration by 4% on Columbia.
50    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
51      add (in global_with_exf/code) a version of EXF_INTERP_READ without
52      dynamical allocation (seems to work in multi-threaded).
53    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
54      single CPU io) so that TAF does not have to see EESUPPORT.h
55    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
56    
57    checkpoint58p_post
58    o obcs: stop if obcs is used with useCDscheme = .true.
59    o shelfice:
60     - fix a sign error so that no slip at shelfice interface works
61     - remove stop for combination non-hydrostatic code and shelfice. That does
62       not mean, that the results are correct, but at least they are numerically
63       stable
64    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
65    o added adjoint exch routined for all exch*3d* routines
66      and updated flow directives
67    
68    checkpoint58o_post
69    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
70      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
71    o change controling S/R for writing pickup file (new S/R do_write_pickup)
72      and clean-up reading/writing of pickup files.
73    o fix local version of read/write pickup (NH part) in rotating_tank/code
74    o simplify EXCH interface:
75     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
76     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
77    o added the regrid package
78    o shelfice:
79     - add a simple boundary layer scheme to reduce noise
80     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
81    
82    checkpoint58n_post
83    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
84       local variable (not in common block).
85    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
86      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
87      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
88        to work with SingleCpuIO.
89    o add "_d 0" to real constant of pkg/cfc subroutines ;
90       update exp. cfc_exemple & tutorial_cfc_offline output files.
91    o multi-threading and IO:
92      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
93        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
94      - barrier before and after reading.
95      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
96      - avoid using MDS_WRITELOCAL for LAND pkg output.
97      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
98        common-block variables ; Allows multi-threading with master-thread IO.
99    o change default MAX_NO_THREADS from 32 to 4 ;
100      and stop cleanly when MAX_NO_THREADS is too small.
101    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
102    
103    checkpoint58m_post
104    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
105       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
106    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
107       keep global_ocean.90x40x15 (for AD testing) with former secondary test
108       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
109    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
110        add MITgcm_tutorials (= code + all the tutorials)
111    o ecco, option to compute cost for total ssh (mean+anom)
112    o consistent with addition of ptracer and ssh in pkg/profiles
113    o profiles: adding ptracer and ssh
114    o testreport: change multi-test output-file name
115      (from output.txt.{name} to output.{name}.txt)
116    o profiles: now ok for mutli-tiles case
117    o seaice: add 4 parameters for different advection schemes for area,
118      (effective) seaice thickness, enthalphy, and snow height. Their default
119      is the standard parameter SEAICEadvScheme
120    o calc_gw:
121     - add cosFacU in zonal viscous flux (harmonic.visc.).
122     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
123       of tutorial_plume_on_slope.
124    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
125    o calc_gw: true flux-form, account for horizontal grid spacing.
126      update rotating_tank results, but not plume_on_slope (affected at
127      truncation level, 11 digits).
128    
129    checkpoint58l_post
130    o calc_gw:
131     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
132     - remove side-drag for now (need to fix it); update plume_on_slope results.
133     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
134    o commit code to make SST/SSS weights spatially variable
135      (based on either variable in-situ or variable initial T/S weights)
136    o pkg/ecco:
137      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
138        now based on horizontally varying weights wthetaLev, wsaltLev
139      * cost_averagesflags now returns year indices in addition to day, month
140      * sflux balance is performed on annual basis
141        (sflxumm, sfluxmm2, bal_sfluxmm)
142      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
143        including separate counting and multipliers
144    o pkg/rbcs
145      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
146    
147    checkpoint58k_post
148    o testreport:
149     - always build in dir. "build" (if not there, mkdir build instead of building
150       & running in input)
151     - run in dir run (if it exists), in build otherwise.
152     - call prepare_run (if input/prepare_run exists)
153     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
154    o pkg/exf modifications to interpolation and rotation routines for more
155       reasonable treatment of North Pole singularity: for tracers North Pole
156       value is set to northernmost zonal-mean value, for zonal velocity it is
157       set to zero, and for meridional velocity it is set to northernmost value.
158    o pkg/exf/exf_check_range.F
159     - add tile index to diagnostics and move stop statement to the very
160       end of the routine.
161    o pkg/diagnostics: (diagnostics_main_init.F)
162      define title of isomorphic variables according to the current config.
163    o pkg/thsice with pkg/seaice dynamics:
164    - fix domain of computation (interior only, required for exf) and do exchanges
165    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
166    o towards a standard way of dealing with multi-threading in MONITOR
167      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
168    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
169       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
170    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
171    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
172    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
173       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
174    o tracer advection:
175     - clean-up and simplify calc_common_factors.F
176     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
177       advection subroutine (but still not used within DST advection S/R)
178    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
179    
180    checkpoint58j_post
181    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
182      from file (collects calls previously in FORWARD_STEP)
183    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
184    o adjoint store dir. adjusted accordingly
185    o genmake2
186      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
187    
188    checkpoint58i_post
189    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
190      on wind stress (SEAICEstressFactor defaults to 1.)
191    o Total number of Timers is finite (<=40): comment out 2 non-essential one
192      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
193    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
194      on CS-grid: no longer loosing mass.
195    o exf & curvilinear-grid: no longer modify longitude xC & xG.
196    o pkg/ggl90: fix sloppy output and fix a bug
197    o pkg/seaice: added SEAICEuseEVPpickup parameter
198      - Set to false in order to start EVP solver with
199        non-EVP pickup files when using SEAICEuseEVP
200      - fix sign error in diffusion in seaice_calc_rhs
201    
202    checkpoint58h_post
203    * Modifications for bottom topography control
204      o replace hFacC by _hFacC at various places
205      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
206      o add non-self-adjoint cg2d_nsa
207      o update autodiff support routines
208      o re-initialise hfac after ctrl_depth_ini
209      o works for 5x5 box, doesnt work for global_ocean.90x40x15
210    * Adding verification for 5x5 box (4-layer) bottom topography control
211    
212    checkpoint58g_post
213    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
214       used for mean seasonal cycle, mean diurnal cycle); add an example
215       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
216    o pkg/ggl90:
217      - add parameter (minimum surface kinetic energy)
218      - fix bug (avoiding division by zero)
219    o couple pkg/thsice to pkg/seaice:
220      - modify advection in seaice to accomodate new scalar fields to be advected
221      - only muliDimAdection scheme work with seaice/thsice
222      - mapping of thsice-variables to seaice-variables, back and forth
223      - does not break the verification experiments, but does not give the
224        desired results either
225    o pkg/seaice
226      - make (default) second order advection a bit less confusing?
227    
228    checkpoint58f_post
229    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
230      to pkg/seaice):
231      - new routines thsice_map_exf and thsice_get_exf provide the interface
232      - add an additional formal parameter to thsice_solve4temp
233    o pkg/exf:
234      - add new fields wspeed, snowprecip (to be able to couple to thsice)
235      - correct Stefan-Boltzmann constant
236      - new parameter for longwave surface emittance
237      - separate some stuff from exf_bulkformulae into new routines  
238        exf_radiation, exf_wind
239      - add new parameters and constants: longwave emissivity for ocean, ice
240        and snow, evaporation parameters over ice
241      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
242        either wind from stress or stress from wind
243    o pkg/thSIce:
244    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
245    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
246       and THSICE_CALC_THICKN
247    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
248    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
249      to make debugging easier.
250    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
251    o pkg/bulk_force:
252      - clean-up comments and parameters ;
253      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
254    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
255      generate new output for test-experiment: aim.5l_cs.thSI
256    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
257      testreport accordingly
258    
259    checkpoint58e_post
260    o SEAICE_CGRID adjoint done
261    o R_STAR adjoint implemented.
262      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
263      * need to sort out init. of h0facc, etc.
264    o Make pkg/profile fully independent of ecco,cost, etc. stuff
265      to be able to use it in pure forward.
266    
267    checkpoint58d_post
268    o upgrade simple test-experiment to tutorial example:
269     step.1: duplicate the experiment and (step.2) will remove the old copy.
270      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
271      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
272      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
273      tutorial_global_oce_biogeo    <- copy of dic_example
274      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
275      tutorial_plume_on_slope       <- copy of plume_on_slope
276      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
277      tutorial_global_oce_optim     <- empty for now (David ?)
278      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
279     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
280    o correct a sign problem in cost_scat.F
281    o obcs and ptracers: fix boundary conditions for advections schemes
282      with larger stencil
283    o thsice adjoint: start
284    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
285      completeness
286    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
287      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
288    o ptracers adjoint:
289      * avoid extensive recomputatations
290      * fix missing re-init. of gptr (missed by TAF)
291    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
292      me to turn off the excessive output to STDOUT that this package produces
293    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
294      and add those terms in Vector-Invariant formulation.
295    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
296      if the control period (xx_hfluxperiod etc) is 0
297    o in profiles pkg, clean routines and fix details
298    o in ecco pkg, reading ssh data:
299      fix problem in case the model does not start at iter0=0
300    o fix mnc-pickup/restart for ptracers
301    o new package prifiles:
302      code to compute profile-based cost by Gael Forget
303      (modifs in ecco, ctrl, autodiff)
304    o Benign bug fix in initialization (spotted by M. Mazloff) of
305      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
306    
307    checkpoint58c_post
308    o adjoint: finish NLFS adjoint and provide reference output in
309      verification/global_ocean.90x40x15/results_ad_nlfs
310    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
311      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
312      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
313      with SEAICE_CGRID defined.
314    o move calendarDumps from "data" to "data.cal" and clean-up the code
315      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
316    o add useEXF & useCAL flags (for now, set in hard-coded way)
317    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
318      (were missing in NH mode, and wrong in quasihydrostatic mode).
319      waiting for Chris updated version of calc_gw to add those CALLs.
320    o fix bug in quasihydrostatic S/R ;
321      add a test for this option: global_ocean.90x40x15.qshyd
322    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
323      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
324    o add on/off flag useOffLine for package OFFLINE
325    o seaice:
326      - modify advection so that it works also on the C-grid
327      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
328        problem in multi-tile runs with C-grid
329      - add flags for clipping ice velocities and/or masking solver forcing
330      - fix drag (ocean on ice) formulation and a bug that caused noise in the
331        C-grid solver
332      - added a few comments to seaice_diffusion.F
333      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
334        are now exclusive)
335      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
336        required re-ordering the code a little:
337       + make DAIRN global variable (defined in SEAICE)
338       + move computation of the viscosities eta and zeta into a new separate
339         routine (because I need to recompute them in seaice_ocean_stress.F)
340    
341    checkpoint58b_post
342    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
343      update output.txt of exp. aim.5l_cs.thSI
344    o various mnc cleanups and improvements:
345      + shrink lookup tables by factor of ~4
346      + better error reporting when running out of lookup space
347      + able to handle longer path/file names (up to 500 chars)
348    o adjoint:
349      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
350      - TBD: "hidden" mom_vecinv recomp. in dynamics
351    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
352     (allow to differentiate between forcing components using new integer flags:
353      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
354     and add new flag to put Dissipation tendency out of Adams-Bashforth.
355    o ecco
356      - enable trend removal from SSH anomaly obs.
357    o adjoint
358      - a fix for PmEpR when #undef EXACT_CONSERV
359      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
360      - try to fix "hidden" recomp. in forward_step for NLFS
361        (NLFS seems broken sometimes after I checked it in)
362    o seaice:
363     - add c-grid version of the dynamic solver:
364       + three new routines that are the c-grid substitute lsr, dynsolver
365         and ostres
366       + put a few fields that were local to dynsolver into global common
367         blocks, so that I can move the computation of stresses etc into
368         seaice_lsr (saves coding but may break the adjoint).
369     - replace more hardwired parameters by runtime parameters
370     - add ice masks that mask the rhs of the implicit solvers where there
371       is no ice (commented out in seaice_dynsolver, because i am not sure
372       if this works properly), eventually this should replace the clipping
373       of ice velocities in seaice_dynsolver to +/-40cm/s.
374    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
375      include it only where its needed
376    o move balancing of fluxes before the call of external_forcing_surf
377    o seaice:
378      - correct units of turning angles (now they are really in degrees)
379      - move computation of GWATX/Y out of main routine into dynsolver
380      - initialize GWATX/Y in seaice_init
381    o Apply mask on Fresh-Water flux (needed for SSH forcing).
382      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
383    o seaice: add runtime flags for turning angles (default to zero)
384    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
385      and trend from exf forcing and ctrl control adjustments
386    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
387      (since checkpoint57x_post)
388    o change the default rotation period to 86164.s = the Earth rotation
389    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
390      and based on a reference stratification. Tested within hs94.cs-32x32x5.
391    o seaice advection: add code for choosing between the default (2nd order
392      central differences) and multiDim advection schemes provided by
393      pkg/generic_advdiff
394    o seaice:
395      - removed all references to SEAICE_GRID.h fields from
396        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
397        (cubed-sphere configuration will change a little)
398      - grid computations in seaice_init are obsolete now.
399      - cleaned up code a little so that is easier to read (hopefully).
400      - added new (better?) discretizations of default advection and diffusion
401        (turn on with SEAICEuseFluxForm)
402      - replace 1 in 3d global fields by kSurface in growth.F
403      
404    checkpoint58a_post
405    o seaice:
406      - bug fix in advect.F
407    o shelfice:
408      - separate shelfice load anomaly from pload (breaks with time
409        dependent forcing), => introduce constant field shelficeLoadAnomaly.
410        Its default is 0., but it may be computed more cleverly from (unknown)
411        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
412        done offline. A good approximation of the pressure load anomaly is
413        necessary to avoid large initial adjustment processes underneath
414        deep-reaching shelfice.
415      - small fix in ISOMIP shelfice_thermodynamics
416      - add more sophisticated thermodynamics of Hellmer (1989), this is
417        now the default
418      - give a few constants more intuitive names
419    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
420      if bulk formulae are used in long integration (especially EmPmR). Turn
421      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
422      if balancePrintMean, the imbalance that is substracted is printed to
423      STDOUT.
424    o fix bug (typo) in obcs_apply_eta.F
425    o add a new package shelfice which enables us to model the circulation
426      underneath shelf-ice with draughts of hundreds of meters.
427     - works
428     - to do: + include improved thermodynamics
429              + check whether kSurfC (from model/inc/SURFACE.h) can be used
430                instead of new field kTopC
431              + can we use topoFile, Ro_surf and existing code in ini_depth.F
432                instead of new field R_shelfIce and new code in ini_depth.F
433                and ini_mask_etc.F?
434              + adjust vertical mixing schemes?
435    o seaice pkg:
436     - add a cpp-flag to include a simple formula for a salinity dependent
437       freezing point of sea water at the surface
438     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
439       meridional stresses are now different (and hopefully correct)
440    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
441       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
442       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
443    o pkg/diagnostics: add options and parameters for regional-statistics
444       diagnostics ; define regions by reading a region-mask from a file
445       (might add other options later)
446    o pkg/bulk_force:
447     - add option and parameters to use AIM surface-flux formulae.
448     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
449       others forcing fields (defined in PARM05, parameter file "data") are loaded
450       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
451     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
452     - use the right EXCH call for uwind,vwind (to work on CS-grid).
453     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
454       and parameters (note: calcWindStress replaces .NOT.readwindstress).
455     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
456    
457    checkpoint58
458    o add "--embed-source" option to genmake2 which, when the supporting
459      tools can be compiled (as determined by genmake2) will turn on the
460      embed_files package which then embeds the entire MITgcm source code
461      (*.[fFhc] + Makefile) used for the build within the executable
462      - requested by CNH but off by default
463      - adds a paltry <9MB to the mitgcmuv executable in most cases
464      - only writes the output when useEMBEDSRC in eedata is true
465    o clean up 3-dim. relaxation codes:
466      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
467      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
468      * Thanks to Tom Haine for testing!
469    
470    checkpoint57z_post
471    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
472      affects output (@ truncation level) of exp. plume_on_slope ; updated.
473    o fix the pickup behavior for obcs in combination with ptracers
474    o fix a bug in ptracers_external_fields_load
475    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
476      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
477    o transfered surface NH pressure to eta field (if exactConserv).
478    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
479         and update lab_sea output.txt file.
480    o completing 3-dim. relaxation code: additional term
481         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
482      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
483      * At compile time, in "EXF_OPTIONS.h" set
484          #define  ALLOW_CLIMTEMP_RELAXATION
485          #define  ALLOW_CLIMSALT_RELAXATION
486      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
487          tauThetaClimRelax3Dim = 15552000.0,
488          tauSaltClimRelax3Dim  = 15552000.0,
489      * 3 cases:
490          1) Use a constant-in-time 3-dim. field
491          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
492          3) Real-time relax. to time-evolving prescribed field
493    o Adding Laplacian-type smoothness constraint on
494      initial and boundary (forcing) controls (ic, bc)
495      * enable at compile-time via
496        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
497      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
498      * Absolute scale somewhat unclear so far
499      * no area weighting was included since no other cost term does so far
500    
501    checkpoint57y_post
502    First step for a NLFS adjoint
503    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
504    o new init. routines for calc_r_star, calc_surf_dr
505    o still need to deal with ini_masks_etc
506    o testreport seemed happy
507    checkpoint57y_pre
508    
509    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
510    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
511    o add new offset feature to offline pkg (plus minor cleanup)
512    o cfc fixes for final year of integration
513    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
514      be in GCHEM_OPTIONS).
515    
516    checkpoint57x_post
517    o fix testreport Pb in multiple test experiment.
518    o cleanup our namelist syntax in verification:
519      - make it more F95 standards compliant (some work still needed)
520      - allows the vast majority of our tests to work with gfortran
521    o Non-Hydrostatic:
522     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
523     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
524    o Allow to apply AB on T,S rather than on AB(gT,gS):
525     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
526     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
527       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
528     - need a "clever" read_pickup to restart from the other AB formulation
529    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
530    o remove some unused variables (reduces number of compiler warnings)
531    o adjoint
532      * Disable useVariableViscosity for adjoint for time being
533        (there are a number of extensive recomputations)
534      * Initialize certain variables needed for adjoint
535    
536    checkpoint57w_post
537    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
538                 fix the singleCpuIO RS version of MDSWRITEFIELD
539       and add a WARNING if using globalFiles=T with multi-processors.
540    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
541      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
542    o tracer advection scheme:
543      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
544       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
545       was not very convenient).
546      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
547       (further tests needed for the implicit DST & Flux-Limiter schemes).
548    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
549      and sRef for convenience, handy, when you want to initialize
550      ptracers in a large domain with a constant non-zero value. Also,
551      untangle ptracers_init.F a little.
552    
553    checkpoint57v_post
554    o change dome exp. to use variable viscosity in side-drag terms.
555    o remove all the files from the cfc_offline test since they are now
556      incorporated into tutorial_cfc_offline which has been producing
557      identical results for a few days of testing
558    o add new parameter: sideDragFactor to enable half-slip-side BC
559      and change side-drag S/R to use viscosity from mom_calc_visc
560      (can switch back by setting sideDragFactor=0.); affects results at
561      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
562       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
563    o vorticity & strain are now computed without masking, to account for
564      no-slip-side BC in variable viscosity calculation ; mask is applied
565      anyway later on, before computing advection/coriolis terms.
566    o modify exp4 to test new obcs support for reading from external files
567      and for passive tracers
568    o fix behavior of ptracers_monitor when monitor output is written to a
569      netcdf-file; still not independent of monitor.F (writes in the same
570      file).
571    o change default value of tRef (put a uniform, meaningful value for ocean
572      & atmos) and initialize sRef (was missing, as Martin mentioned).
573    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
574      to be proportional to enstrophy dissipation length.  Thus,
575       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
576      This is now consistent with Smagorinsky and with the manual.
577    
578    checkpoint57u_post
579    o OBCS and PTRACERS: add open boundary support for passive tracers
580      - either use homogenous (pseudo) v.Neumann conditions or prescribe
581        OB-values from file; this is not different from the way theta and salinity
582        are treated
583      - however, Orlanski-radiation conditions are not supported, and the model
584        will stop if you use pTracers and Orlanski at the same time.
585      - beefed up the rountine obcs_external_fields_load: now only those open
586        boundary values are overwritten with values from files for which there
587        are really files, otherwise the OB-fields remain untouched. This makes
588        it possible to use different OBs at different ends of the domain (as
589        with EXF)
590    o reduce number of exch calls in shap_filt (s2).
591    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
592      truncation level) 4/5 MLAdjust test results (11&12 digits match).
593    
594    checkpoint57t_post
595    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
596    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
597      same truncation, independent of the face number: affects affects several
598      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
599    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
600      note that biharmonic viscosity + no-slip was not tested in any experiment.
601    o fix bug in non-linear free-surf side-drag ; generate new output for
602      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
603    o make mnc honor the writeBinaryPrec flag for most kinds of output
604    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
605    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
606      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
607    o add brackets in multi-terms sum to get same truncation, independent of
608      the face number (manage to get exactly same value of gU,gV at the cs-edge)
609      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
610    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
611      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
612      a maximum grid-scale Reynolds number.  Also, changes all length calculations
613      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
614      Suggested values of viscosity parameters found in mom_calc_visc.
615      Many new viscosity diagnostics available.
616    
617    checkpoint57s_post
618    o Add clearing-house for viscosity calculations, mom_calc_visc and
619      correct numerous bugs in LeithD and Smagorinsky discretizations.  
620      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
621      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
622      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
623      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
624      The Strain-Tension form is now called with useStrainTensonVisc=.true.
625      ViscAhStrain and viscAhTension are now retired.
626    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
627    o In response to JMC's bug report, genmake2 now ignores any soft-links
628      that it finds in the *current* directory when searching for files.
629      Soft-links found in any other source directories will still work as
630      they did before.
631    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
632      a C routine to unlimit the stack size
633    o mnc-ify pkg/aim snapshot vars
634    o mnc-ify pkg/land as requested by Daniel
635    o various changes to mnc including:
636      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
637      - output can now be grouped so that all files within a group
638          change the ITER portion of their names in lock-step together
639      - can now read ("global") PER-FACE (in addition to PER-TILE) files
640          and works with both EXCH1 and EXCH2 (but needs more testing)
641      - writing works for all verification test cases w/ g77 on Linux
642    
643    checkpoint57r_post
644    o make MNC variable initialization happen earlier
645    o add diagnostics for (almost) each term of the momentum Eq.
646    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
647    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
648    o remove MINIMAL_TAVE_OUTPUT option ;
649      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
650    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
651      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
652    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
653    o add time-dependent SST, SSS control
654    o cost terms in ecco/ modularized (new cost_generic.F)
655    o cost_averages routines are modularized (new cost_averagesgeneric.F)
656    o new infrastructure for seaice model vs. obs misfits in seaice/
657      * driver from the_main_loop.F is seaice_cost_driver.F
658      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
659      * gradient check in Exp. 6a of natl_box_adjoint/
660    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
661      (see README file)
662    
663    checkpoint57q_post
664    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
665    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
666      - bug was reported by Jean-Michel and Ian Fenty
667    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
668      update exp. cpl_aim+ocn output.
669    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
670      Needed for high-res. runs with large global files
671      to be able to limit tapelev size
672    o Changed some tests for adjoint:
673      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
674      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
675      * global_ocean.90x40x15/ back to default 3-level checkpointing
676    o Modifications to enable scripted COMMON to MODULE conversion
677      * verification/OpenAD/code/ has necessary scripts and description;
678      * converts, compiles and runs successfully;
679    
680    checkpoint57p_post
681    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
682    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
683      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
684    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
685    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
686      (was already the case for dissipation with mom_vecinv,
687       and also the case for grad.PhiHyd when staggered-timeStep)
688      This will allow to put dissipation out-off the AB time-stepping.
689     Unfortunately, affects truncation error. Update output of exp. that "fails"
690      (cg2d matching number) and leave the others for later: front_relax(10),
691      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
692      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
693    
694    checkpoint57o_post
695    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
696      (2) its ready to be documented during the 20050801 DocFest
697    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
698      for ideal_2D_oce and lab_sea on linux_ia32_g77
699    o set to #undef CTRL_SET_OLD_MAXCVARS_30
700      in global1x1_tot/code_seaice_adj to access indices 32, 33
701      (worth another tag)
702    
703    checkpoint57n_post
704    o adding precip control xx_precip 32
705    o adding swflux control xx_swflux 33
706    o Replacing 10 forcing penalty cost routines by 1 generic.
707    o Implementing partitioning in time-mean and variable adjustment
708      for atmos. state.
709    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
710    o in natl_box_adjoint:
711      * updated exp 1 to 10
712        (but does not have time-mean vs. variable split results yet)
713    o updated global1x1/*_seaice_adj/
714      to incorporate latest changes
715    o enable useSingleCpuIO for mdsio vector routines
716      (applies in particular to tapelev I/O)
717    o removed inefficient K-loop in all active_file*control*.F
718    
719    checkpoint57m_post
720    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
721      and advect_cs (use EXCH-2 and standard cs-32 grid files).
722    o pkg/exch2: filling of face-corner halo regions is optional
723      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
724    
725    checkpoint57l_post
726     tag before updating tutorials (pre-release-2)
727    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
728       for output and interpolation of input fields onto model grid)
729    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
730       Affects results of exp. rotating_tank ; update output.txt.
731    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
732          and taking the square quantity and/or using a fraction-weight field.
733    o fix aim_diagnostics_init.F mate numbers.
734    o add mnc output capability to diagnostics/diagstat and update
735      our cvsignore files for the ACSII output generated
736    
737    checkpoint57k_post
738    o lab_sea now uses diagnostics package and provides a suite of
739      new EXF diagnostics output.
740    
741    checkpoint57j_post
742    o exf
743      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
744        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
745        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
746      * extended diagnostics output
747        - now includes all EXF variables
748        - hs, hl moved to common block
749        - separate S/R for diagnostics, called after ctrl vector is added
750        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
751        - EXFqnet contains true Qnet (i.e. includes qsw)
752      * updated verif. lab_sea, global_with_exf
753      * Rearranging hflux (exf_mapfields -> exf_getforcing)
754        to ensure that diagnostics sees a true EXFqnet
755    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
756    o diagnostics pkg: change pointers so that 1 diagnostic can be used
757      several times with different frequencies.
758    o mnc-ify the thsice package as requested by Daniel Enderton
759      - the monitor--MNC output needs work
760      - many attributes need to be added (most are currently blank)
761    o mnc-ify theaim_v23 package as requested by Daniel Enderton
762      - many attributes need to be added (most are currently blank)
763    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
764    o add Sadourny like discretization to the 4th.O vorticity advection scheme
765    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
766      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
767         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
768    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
769     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
770    
771    checkpoint57i_post
772    o Diagnostics package was changed: diagnostic allocation is now deactivated
773      by setting an empty file name in the namelist (used to be by setting 0 frequency)
774    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
775      add 1rst Order upwind vertical Shear.
776    o add a quick fix for A/B checkpointing in OFFLINE mode
777    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
778      end-run around the C/Fortran linking horror in eesup/src/timers.F
779    o added pkg/runclock: allows user to terminate run based on wall clock
780    o added non-hydrostatic scaling parameter: nh_am2
781    o pkg/my82: futile attempt to make results compiler-independent by adding
782      some "_d 0", etc. no effect.
783    o for mnc output, fill the 'T' coordinate var with myTime and create a
784      separate 'iter' variable for iteration count
785    o pkg/diagnostics:
786      add new capability: output of Global/Regional & per-level statistics ;
787      tested against monitor output (including land & thSIce) on various exp.
788    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
789    
790    checkpoint57h_done
791      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
792      data.diagnostics, data.gchem, data.ptracers) is done.
793    
794    o pkg/diagnostics: prepare for Global/Regional statistics.
795      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
796    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
797      and rename it: DIFFERENT_MULTIPLE
798    
799    checkpoint57h_post
800    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
801    o pkg/diagnostics: change output frequency, now in seconds (instead
802      of Nb of iterations). This requires to change data.diagnostics.
803    checkpoint57h_pre
804    
805    o in mnc, let the user create the output dir if both mnc_outdir_date
806      and mnc_outdir_num are false
807    o add fflags() to pkg/diagnostics which allows one to specify, on a
808      per-file basis, the file precision [default behavior is unchanged]
809    o added diagnostics to pkg/kpp, including computation of mixed layer
810      depth based on a temperature/density criterion
811    o updated verification/natl_box to test the new pkg/kpp diagnostics
812    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
813    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
814    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
815      not mnc -- this mistake was found by JMC and is now corrected
816    
817    checkpoint57g_post
818    o add Adams-Bashforth 3rd Order time stepping:
819      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
820      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
821    checkpoint57g_pre
822    
823    o make lambda[Theta,Salt]ClimRelax spatially varying
824      (default remains spatially uniform constant based on tau)
825    o added new control variables
826      * init. uVel, vVel, etanN
827      * lambda[Theta,Salt]ClimRelax
828    o separate masks used for ctrl_pack/unpack 'from write_grid' output
829      (suggested by G. Forget)
830    
831    checkpoint57f_post
832    o add parameter "baseTime" = model base time = time at iteration zero
833      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
834      account for baseTime shift
835    o move Coriolis arrays from PARAMS.h to GRID.h
836    checkpoint57f_pre
837    
838    o mnc-ifying the seaice package
839    o introduced an alternative length scale calculation for use in the limiting
840      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
841    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
842    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
843      as well as grad(vort3).  Made it compatible with both approximate form
844      for the cubed sphere and full form of these gradients.  Added flag
845      useFullLeith to select between approximate and full form.  
846    o add "d0" in getcon.F to reduce differences between compilers/platforms
847      update output.txt of exp. fizhi-gridalt-hs
848    o change port_rand funtion to allow to set the seed.
849    o fix obscure MNC bug involving conversion between reals and integers
850      - it caused no problems with certain (eg. gcc, ifc) compilers but the
851        new version is now more standards-compliant
852    o adjoint-related modifications
853      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
854      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
855      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
856    
857    checkpoint57e_post
858    o Adding eddy stress controls a la Ferreira et al.
859    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
860    
861    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
862      update output.txt of exp. fizhi-gridalt-hs
863    o add more "Z" dimensions and associated coordinate vars to MNC
864    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
865    o parameter calendarDumps: when set, approximate months (30-31 days) and years
866      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
867      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
868      months and years.  Requires pkg/cal.
869    o diagnostics: add pickup functionality
870      - off by default for backwards compatibility
871      - current version only uses MDSIO -- MNC will be added
872    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
873    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
874    
875    checkpoint57d_post
876    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
877    o modify verification/ideal_2D_oce so that it tests the creation of mnc
878      output from the diagnostics package
879    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
880    o make genmake2 more portable by using ".$FS" instead of ".f" for more
881      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
882    o add coordinate variables to the MNC output from the diagnostics package
883    o change MNC-flags default value: true when useMNC=TRUE
884    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
885      the ability (off by default) to read the grid information using MNC
886    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
887    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
888    o do snap-shot diagnostics at the middle of the time-interval (instead of
889      at the end).
890    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
891      new test for AIM with thSIce + slab-ocean
892    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
893    o move state variable diagnostics to the beginning of the time step ;
894      (note: still needs some work specially for snap-shot diagnostics)
895      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
896    
897    checkpoint57c_post
898    o Change testing option (-ieee) to get closer agreement between g77 & ifort
899    o generate new output.txt files on faulks with g77 & the new -ieee option
900    checkpoint57c_pre
901    
902    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
903      update output.txt of exp. global_ocean.90x40x15
904    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
905      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
906    o add saltFlux(+File) forcing capability with periodicExternalForcing
907    o allow to use pkg diagnostics for GM-Redi & ThSIce output
908    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
909    o improvements for the MNC output from DIAGNOSTICS:
910      - correct handling of the unlimitied dimension
911      - all dims now have associated coordinate variables
912      - variables located at U, V, and Corner ("Z") points are now written
913        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
914        *all* data points are output
915    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
916    o added pkg/seaice/seaice_monitor.F
917    o mdsio_readfield.F can now read files visible only to master MPI process.
918    o pkg/seaice: some test code for ice-modified ocean stress
919    o exf_getffields interpolation defaults to bilinear for all scalar forcing
920      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
921      spurious negative numbers for precipitation and humidity.  Will cause
922      some small numerical differences for integrations using pkg/exf/exf_interp.F.
923    o pkg/ctrl/
924      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
925        May be enabled via doPackDiag
926      *  introduce z-scaling of
927         + gradient (doZscalePack) and
928         + control (doZscaleUnpack)
929    o pkg/mdsio/
930      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
931      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
932    
933    checkpoint57b_post
934    o simplify options in diagnostics_fill arguments (remove weird combinations)
935    o fix MNC coordinate variables so that they now contain per-face index
936      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
937      general, EXCH2 grids are only aligned to a "local" coordinate system
938    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
939    o Implement instantaneous output within pkg diagnostics:
940      setting a negative frequency in data.diagnostics produces
941     "snap-shot" output (as opposed to time-average if freq > 0)
942    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
943      NOTE: change ptracer diagnostics name: use 2 characters to work with
944            more than 9 tracers. Add also diagnostics of advect & diffus flux.
945    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
946      becomes the coordinate variable for the 'T' dimension
947    o add CF-style coordinate variables to MNC
948      - just a first cut:  numbers are meaningless on the cubesphere and
949        missing along the T axis but otherwise it works!
950    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
951    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
952    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
953      this is based directly on what the model compute, so that the content of
954      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
955    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
956    o clean up build options files for SunOS, in particular
957      - remove -traditional from xmakedepend
958      - change -xarch=v9 to -xarch=native for f77
959      - restore use of make (not gmake)
960      - add CC=gcc if using g77
961    o changes per discussion of AM, JMC, & EH3 today:
962      - move redundant "grid" variables out of "state" -- in preparation of
963        creating proper CF-style coordinate variables and in recognition
964        that any/all grid variables can be easily copied (eg. w/NCO) from
965        the grid files into any of the other NetCDF files
966      - *always* output grid variables with MDSIO (this will eventually be
967        changed)
968      - output MNC grid file if useMNC is true
969    o every instance of _END_MASTER() has been found and replaced with
970      _END_MASTER( myThid ) in order to satisfy certain picky Sun
971      preprocessors
972    o re-arrange diagnostics pkg initialisation:
973     - allow each package to extend the available diagnostics list
974     - add some checking and fix small problems (multi-threaded, ...)
975     - new S/R diagnostics_fill (replace fill_diagnostics):
976       look through the short list of active diag. (instead of the long list)
977       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
978    
979    checkpoint57a_post
980    o this set of changes restores TAMC compatibility
981      tested for global_ocean.90x40x15 adjoint on trough
982      (what a pain)
983    
984    checkpoint57a_pre
985    o some modifs in tools/build_options for sunos
986    o call ctrl_pack for ctrl at end for optimcycle=0
987    
988    checkpoint57
989    o add horizontal bi-harmonic viscosity for vertical velocity
990      - new parameter viscA4W (defaults to viscA4)
991      - affects only non-hydrostatic code
992      - to be done: no-slip lateral boundary conditions
993    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
994    o implement Implicit Vertical advection for pTracers
995    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
996      (implemented also for implicit vertical diffusion & advection)
997    o OBCS: extend application of tracer open boundary conditions
998      to a strip beyond the boundary of width Olx/Oly
999    o add call monitor to TAF set of required calls (flow directives)
1000      and include in natl_box_adjoint
1001    o untangle a few ifdefs related to cost, ctrl, autodiff
1002      untangel a few ALLOW_ECCO_OPTIMIZATION
1003    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1004      (theta2, salt2 in ecco_cost_weights)
1005    
1006    checkpoint56c_post
1007    o OBCS as control variables
1008      - update ctrl_ad_diff.list, obcs_ad_diff.list
1009      - remove balance of obcs controls from default
1010      - fix index bug nobcs in ctrl_init
1011      - fix dummy fields filen in ctrl_pack
1012      - add dummy weights for obcs
1013    o lsopt: comment out fort.94 output
1014    o optim:
1015      - remove unnecessary header files
1016      - adjusted namelists
1017      - add xerbla.F to Makefile
1018    o exf:
1019      - multiple modifications of exf_check_range
1020      - unit change in exf_init_runoff from [m/year] to [m/s]
1021    o mdsio:
1022      - i/o-vector change debugLevel from debLevA to debLevB
1023    
1024    checkpoint56b_post
1025    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1026      is called from DO_THE_MODEL_IO
1027      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1028      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1029      - clean up PTRACERS_WRITE_TIMEAVE a little
1030    o add another verification experiment that tests both the cfc-pkg and
1031      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1032      reactive tendencies treated inline with regular timestepping
1033    o testreport previously did a lousy job of comparing small numbers, so
1034      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1035      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1036      testreport.
1037    o ptracers_monitor: bug fix for MPI
1038    
1039    checkpoint56a_post
1040    o GCHEM: finish reorganizating the package
1041      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1042        (introduces another 3D-array for each passive tracer, but only if
1043        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1044        gchemTendency is not needed because the timestep is done separately)
1045      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1046      - GCHEM is now---more or less cleanly---separate from PTRACERS
1047      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1048        so clear to me how that should be done in a general way.
1049    o CFC: improve formatting of output in CFC_ATMOS
1050    o PTRACERS:
1051      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1052        that ALL experiments with ptracers enable can be checked. This makes
1053        GCHEM_MONITOR obsolete.
1054      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1055        monitorFreq
1056      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1057    o add PTRACERS (PTR0[1-5]) to testreport output
1058    o exf_check_range:
1059      * default changed to .TRUE.
1060      * will check values for niter0 if debLevA, every timestep if debLevB
1061      * STOP in exf_check_range if 'out of range'
1062      * range chosen generous to allow for potential extema
1063      TBD: a version with stricter range
1064           permitted range would be runtime parameters
1065    o GMredi:
1066      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1067      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1068      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1069    o GCHEM:
1070      - move call to GCHEM_FORCING_SEP, so that it is now called before
1071        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1072      - introduced a useGCHEM runtime flag and applied it everywhere.
1073      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1074        this flag is now only visible within GCHEM-pkg routines.
1075      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1076        be replaced by a 3D array that is computed before thermodynamics; for
1077        this, the tracer ID iTracer had to be included into the parameter list
1078        of ptracers_forcing
1079      - set up forward_step to call gchem_forcing, that will replace
1080        gchem_forcing_int in ptracers_forcing
1081      - cleaning up
1082    o small cleaning of exch2: remove files that are also in eesupp/src
1083    
1084    checkpoint56
1085    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1086    o mnc: cleanup "full" files--fixes out-of-memory problem
1087    o ECCO-GODAE
1088      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1089      * fully merged and updated from SIO code
1090        windstress sign change affects
1091        - exf_inscal_[u/v]stress
1092        - sign of xx_tau[u/v] adjustments
1093        - signs in cost_scat
1094      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1095      * natl_box_adjoint updated and compressed
1096      * 2-level checkpoint switch added
1097        (tested in EXP. 1 of natl_box_adjoint)
1098      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1099    o SVD
1100      * first complete, non-hacked version for SVD calculations
1101      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1102        performed via direct access files admtlm_vector.it????
1103        (via ctrl_[un]pack)
1104      * optimcycle is used for ARPACK iteration counter
1105        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1106      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1107        and add linear transforms where necessary
1108      * controls are initial/final SST, SSS (can be extended; need to check
1109        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1110    o mdsio: filename info to both stderr, stdout
1111    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1112      from sign change
1113    
1114    checkpoint55j_post
1115    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1116      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1117    o add consistent build directories and .cvsignore files to verification
1118    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1119    o make all subroutines 30 or less characters in length for certain older
1120      compilers to work (a thorough search only turns up two routines in
1121      pkg/ptracers)
1122    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1123      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1124    
1125    checkpoint55i_post
1126    o change arrays for total vertical diffusivity (2.D if explicit,
1127      3.D if implicit) ; each ptracer uses its own background value.
1128    o added mnc/NetCDF output capability to ocn_compon_interf
1129      - added bits to verification/cpl_aim+ocn so that it can run on
1130        ITRDA and other clusters without the mpirun "-wd" option
1131    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1132      configuration
1133    o give MNC the ability to create additional files rather than
1134      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1135      - the default is just less than 2GB which is a practical limit
1136        on many systems
1137    o Compute the non-local term using either KPP vertical diffusivity (=default)
1138       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1139    
1140    checkpoint55h_post
1141    o add verification test "vermix"
1142    o remove all the *_ioinc flags and replace with the single global
1143      outputTypesInclusive flag
1144    o allow to set a vertical profile of vertical diffusivity for T & S
1145    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1146    o useMNC moved from data.mnc to data.pkg
1147    
1148    checkpoint55g_post
1149    o Renaming carbon AD experiments to comply with testreport conventions
1150    o Updating adjoint of Held-Suarez hs94.1x64x5
1151    o Fixing directives for non-ECCO forward_step, after ECCO directives
1152      have been fixed to avoid recomp. of do_oceanic_phys
1153      Works well for global_ocean.90x40x15,
1154      but recomp. issue remains for carbon
1155    o Updating adjoint output for natl_box_adjoint after
1156      pkg/ecco has been modified (see taga c55d_post)
1157    
1158    checkpoint55f_post
1159    o rename to timeave_init_fixed
1160    
1161    checkpoint55e_post
1162    o some delicate re-shuffle of store directives to avoid one
1163      extra call of do_oceanic_physics
1164      affects ecco_the_main_loop.F, do_oceanic_physics.F
1165      checkpoint_lev1_directives.h
1166    o NB: this may break global_ocean adjoint temporarily,
1167      but it is clear how to fix it. Will do later, need this now.
1168    
1169    checkpoint55d_post
1170    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1171    o ecco_cost_weights is modified to 1x1 runs
1172    o modifs to allow observations to be read in as
1173      single file or yearly files
1174    o enable to read exf forcing fields as either
1175      single file or yearly files (flag useExfYearlyFields)
1176    checkpoint55d_pre
1177    
1178    o switch between 2-level and 3-level checkpointing
1179    o add ability of MNC to write local and "partial" (eg. 2D slices where
1180      the full 3D field is never actually stored) arrays to NetCDF files
1181      with the correct (that is, the complete multi-dimensional) set of
1182      array indicies
1183      - used in mom_vecinv() to write the diagFreq output
1184      - tested (demonstrated) in verification/aim.5l_cs
1185    o further mnc-ification
1186      - add verification/lab_sea to the list with mnc setups
1187      - fix undefined mnc v-names in cd_code
1188      - add kpp to mnc output (both snapshot and timeave)
1189    o non-hydrostatic code
1190      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1191        in calc_gw.F
1192      - defaults to viscAh
1193      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1194        friction or Leith) in non-hydrostatic mode, as long as there is
1195        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1196    o pkg/cost
1197      extend simple cost functions to treat time mean quantities
1198      (T,U,V) via cost_accumulate_state from cost_tile
1199    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1200        be 2 times larger than the minimum size the advection scheme requires.
1201        now get a perfect conservation of salt in advect_cs test-exp (updated)
1202    o GGL90 (Gaspar's TKE mixed layer)
1203      - add horizontal diffusion of TKE, requires exchanges in
1204        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1205        default. In OPA there is no horizontal diffusion of TKE but the
1206        mixing coefficients are computed from a horizontal average of TKE of
1207        6 points or so. I think that diffusion has a little more physical
1208        justification.
1209      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1210        was in vain)
1211      - mask tke-variable in ggl90_init
1212    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1213    o fix biharmonic diffusion on CS-grid.
1214    o more obcs stuff
1215      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1216        for reading boundary values. This routine is called from
1217        obcs_prescribe_read
1218      - updated obcs_check
1219      - changed sponge layer relaxation parameter units for days to seconds
1220      - turned off sponge layer by default
1221      - changed argument list of OBCS_CALC to myTime+deltaTclock
1222      - fixed about 35 bugs in obcs_external_fields_load
1223    
1224    checkpoint55c_post
1225    o obcs stuff
1226      - new runtime flags useOBCSprescribe, useOBCSbalance
1227      - re-arranged obcs_calc
1228      - moved exf_getobcs to obcs_prescibe_read
1229        obcs_prescibe_read is called after ORLANSKI stuff
1230        and independent of it (executable can contain all).
1231      - updated obcs_check
1232      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1233        These may be necessary only if tangential velocities are
1234        prescribed at OB, not sure, needs testing.
1235    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1236      which simplifies the calls and passes the ifc check-bounds test
1237    
1238    checkpoint55b_post
1239    o add a 2D scalar, Z location, exchange_2 routine.
1240    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1241      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1242      affects advect_cs results (for the wrong reason): update output.txt
1243    o use a more standard discretization for biharmonic viscosity ;
1244     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1245      affects results of dome set-up: update output.txt
1246    o fix gad_advection.F (CubedSphere part), back to version 1.23
1247    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1248    
1249    checkpoint55a_post
1250    o merged code to
1251      * prescribe/read time-dependent open boundaries
1252        (works in conjunction with exf, cal)
1253      * sponge layer code for open boundaries
1254      * each boundary N/S/E/W now has its own CPP option
1255        (healthy for the adjoint)
1256    
1257    checkpoint55
1258    o up-to-date adjoint of previous breaks
1259      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1260      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1261      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1262      - carbon: * remove tr1-related adjoint verification
1263                * add ptracer as control variable
1264    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1265      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1266    
1267    checkpoint54f_post
1268    o in verification/carbin/ remove experiment related to
1269      ALLOW_PASSIVE_TRACER (array tr1 etc)
1270      code_ad/ input_ad/ results_ad
1271    
1272    o add two new packages
1273      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1274        + subject to optimization (memory)
1275      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1276        + subject to reordering (many GOTOs in the original code)
1277        + so far opps is called for every (i,j) point, and then operates in
1278          the vertical; one may want to reorder the scheme in order operate in
1279          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1280          fields)
1281    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1282      - all verification tests compile and run with linux_ia32_g77
1283      - defaults are compatible with current input files--nothing
1284        should change if you were not previously using MNC
1285      - MNC output has been added in numerous places (eg. timeave)
1286        but there are still a few writes not yet do-able with MNC
1287        (this is in progress)
1288      - flags now allow for either/or/both use of MDSIO and MNC and
1289        documentation will soon follow
1290      - numerous small formatting cleanups for ProTeX
1291    o add version info (via BUILD_INFO.h) to MNC and stdout
1292    
1293    checkpoint54e_post
1294    o add two new packages
1295      - pp81 (Packanowski and Philander, 1981), Richardson number and
1296        stratification dependent mixing
1297      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1298      - these scheme operate in a similar manner as KPP (without ghat, of
1299        course), however there is only one diffusivity that is used for both
1300        temperature and salinity (and passive tracers)ç
1301    o add offline package
1302    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1303      provided by Stephanie Dutkiewicz
1304    o genmake2: add ability to search for C compilers and cleanup test output
1305      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1306    
1307    checkpoint54d_post
1308    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1309    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1310      leading to additional shift by 5 days each year of integration
1311       (i.e. leading to considerable offset over the years)
1312    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1313    o start with no AB and no initial filtering (staggerTimeStep):
1314      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1315    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1316      (external loading & cpl import/export stay in forward_step.F)
1317    o update coupling interface to work with new staggerTimeStep
1318    o change MDSIO ptracers_pickup.
1319    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1320    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1321    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1322    
1323    checkpoint54c_post
1324    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1325      this affects (truncation error) output.txt of test-exp:
1326       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1327    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1328    o change Qnet to always be the net heat flux, (+upward).
1329      affects (truncation error) output of natl_box exp.: updated
1330    o define the max number of passive tracers in PTRACERS_SIZE.h
1331    o start to test mnc routinely in exp0
1332    o add sea-ice loading (sIceLoad) as a new forcing field.
1333    
1334    checkpoint54b_post
1335    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1336       impressive on Altix and Opteron systems)
1337    o diagnostics can now write NetCDF files through the mnc package
1338    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1339    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1340    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1341      affects (truncation error) output of lab_sea & natl_box exp.: updated
1342    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1343    
1344    checkpoint54a_post
1345    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1346    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1347    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1348    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1349      + internal_wave (shift in writing cg2d_ini_res)
1350    checkpoint54a_pre
1351    
1352    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1353      - modified verification/lab_sea and natl_box_adjoint accordingly
1354    
1355    checkpoint54
1356    checkpoint53g_post
1357    o prepare splitting of thermodynamics: store convect.counter in common block
1358    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1359      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1360    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1361    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1362    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1363    o restore adjointability
1364    
1365    checkpoint53f_post
1366    o modifications that affect AIM experiment results (update output.txt):
1367      - no advection of S at top interface Nr (pkg/generic_advdiff)
1368      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1369    o AIM pkg:
1370      - include stability function into surf.Flux derivative relative to Tsurf
1371      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1372    
1373    checkpoint53e_post
1374    o merged cylindrical coord configuration
1375    o added rotating_tank experiment
1376    checkpoint53e_pre
1377    
1378    checkpoint53d_post
1379    o faulks upgraded: re-generate output.txt that have changed:
1380       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1381    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1382    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1383    o added Sadourny discretization of Coriolis
1384      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1385      - re-enabled use of omega3 (useAbsVorticity)
1386    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1387      vector-invariant equations
1388      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1389    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1390      hopefully without new bugs
1391      - still to do: biharmonic friction for non-hydrostatic w
1392    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1393    o regenerated output for global_ocean_ebm (using -ieee)
1394    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1395      of mom_common/
1396      - simple re-arrangement of instructions within computing loop
1397    checkpoint53d_pre
1398    
1399    checkpoint53c_post
1400    o new version of coupler for AIM+thSIce and Ocean models
1401     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1402     - land: change Evaporation of snow
1403     - aim with thSIce: fix bug in snow-precip.
1404    o changes to calc_gw.F
1405     - bug fix for w^2 term near the bottom boundary
1406     - (hopefully) improve the lateral slip boundary condtions for use with
1407        partial/looped cells
1408      - because the bug fix changes two verification experiments anyway (exp5
1409        and plume on slope), change the lateral boundary condition from half slip
1410        to the value of no_slip_sides
1411    o ebm package wasnt quite up to the parallel task. Fixed that.
1412    o Adjoint of EBM package + verification
1413      * TLM OK
1414      * ADM not sufficient accuracy yet (needs further testing)
1415    
1416    checkpoint53b_post
1417    o Commiting new energy balance model to repository
1418      * package is pkg/ebm
1419      * verif. is verification/global_ocean_ebm
1420      * references are in ebm_driver.F
1421    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1422    C        Global thermohaline circulation. Part I:
1423    C        Sensitivity to atmospheric moisture transport.
1424    C        J. Climate 12(1), 71-82
1425    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1426    C        Global thermohaline circulation. Part II:
1427    C        Sensitivity with interactive transport.
1428    C        J. Climate 12(1), 83-91
1429    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1430    C        Destabilization of the thermohaline circulation
1431    C        by atmospheric eddy transports.
1432    C        J. Climate 7(12), 1870-1882
1433    o Will need long integration testing.
1434    checkpoint53b_pre
1435    
1436    o created pkg/mom_common in preparation for variable viscosity code
1437    o renamed and split ini_mnc_io
1438    o pkg/land: only liquid water can diffuse or run-off
1439    o AIM using land: soil wetness availability account for snow
1440    o added printMapIncludesZeros to EEPARMS namelist
1441    
1442    checkpoint53a_post
1443    o restore TAMC compatiility for exf_constants.h
1444      (no usage of _d in .h)
1445    o Additional storing in KPP in an attempt to fix
1446      TAMC problem with adjoint of KPP code.
1447      (no success...)
1448      Identical code works fine with TAF.
1449    o Fixed verification/natl_box_adjoint experiments.
1450      Initial conditions for Experiments 4 and 5 are now
1451      set to "SEAICE_initialHEFF=0", which is more reasonable,
1452      and hence gives results closer to that of Experiment 2.
1453      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1454    
1455    checkpoint53
1456    o stable checkpoint with up to date adjoint
1457      TLM tests only run for 1st grdchk at the moment. Its unclear if
1458      this is a code problem or a problem with resetting code for g_
1459      variables that is being autogenerated wrong.
1460      Otherwise:
1461       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1462       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1463         are both still in chaos following their security messes.
1464    
1465    checkpoint52n_post
1466    o various build (mostly genmake2) changes including:
1467      - ability to build/run more easily within Cygwin and MacOS X
1468      - more complicated Makefiles with a stronger dependence on Gnu Make
1469    o pkg/seaice modifications
1470      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1471        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1472        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1473      - changed proxy for geostrophic velocity and updated
1474        verification/lab_sea/results/* accordingly
1475      - removed ADI dynamic solver from pkg/seaice
1476      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1477        they caused a segmentation fault under certain circumstances
1478      - removed unused field WATR
1479    o bug fix in exf-package:
1480      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1481         now reflect that.
1482    o small fixes in the cal-package:
1483      - set reference date to first of January for the 'model'-calendar
1484      - failing of cal_CheckDate in cal_FullDate now actually results in a
1485        warning
1486    o small modifications in exf-package to increase flexibility:
1487      - change climtempfreeze from a constant to a runtime parameter that
1488        is specified in data.exf_clim (default = -1.9)
1489      - introduce runtime parameter windstressmax (default = 2.0) that is
1490        specified in data.exf
1491    o fix in pkg/thsice:
1492      - update Evap (Tsf changes) to be consistent with Latent heat flux
1493      - maintain snow precipitation unchanged (even if Tsf >=0).
1494     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1495    
1496    checkpoint52m_post
1497    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1498      this does not change any of the results, because myIter=0 in swfrac always
1499      lead to jwtype=2 (the default anyway), but the call makes little sense
1500      as a default
1501    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1502    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1503      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1504    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1505    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1506    o extending useSingleCpuIO option to work with new exch2 I/O format
1507      - old-style, missing-tile I/O is still accessible by defining CPP
1508        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1509    o monitor package can write to NetCDF files and/or STDOUT
1510    o fix re-definition bug in MNC_GRID_INIT_ALL()
1511    o doc/api_reference added
1512      - a framework for building an API Reference Manual using all
1513        the "protex" comments embedded in the code
1514      - see pkg/generic_advdiff, pkg/mnc for examples
1515    o MNC:
1516      - make myThid the last argument for all subroutines
1517      - new default for the grid files: NO halos
1518      - add useMNC and other run-time flags
1519      - separate per-file-group handling of the unlimited dimension
1520      - early initialization of MNC w/ flags read at the eeboot stage
1521        and lookup tables set in initialize_fixed
1522      - write all MNC output to a freshly-created directory
1523    o thermodynamics sea-ice (thsice) is now tested with testreport.
1524    o test exp. advect_cs: use the standard cs32 grid ; update output.
1525    o Added functionality to grdchk:
1526      pick global i,j,k position (or nearest wet) where to perform check.
1527    
1528    checkpoint52l_post
1529    o new land formulation:
1530      a) use ground enthalpy as prognostic variable to ensure exact
1531         energy conservation.
1532      b) account for water temperature and for latent heat of freezing
1533         in all processes (rain, run-off, ground storage)
1534      c) compute surface and ground temperature implicitly.
1535    o aim_v23 modification for new land model:
1536      a) Treat separately land / ocean / sea-ice surface fluxes
1537         to allow implicit computation of land & sea-ice surface temp.
1538      b) add snow precipitation.
1539    checkpoint52l_pre
1540    
1541    o fix problem (when 1 tile is empty) in min/max monitor.
1542    o fix bug in timeAve (u,vZetatave in common block)
1543    o no restoring terms under ice for pkg/seaice
1544    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1545    o bug fix for pkg/seaice pickups
1546    o change MNC call locations and add coordinate attributes
1547    o mask vorticity at the corner ; affects global_ocean.cs output
1548    o fix ini_curvilinear_grid ; test CS experiments with mpi
1549    o aim.5l_cs: modify sea-ice fraction input file ; update output
1550    o exf: Adding simple range check routine for exf fields after read
1551    
1552    checkpoint52k_post
1553    o removed top-level directory "diags"
1554      - we migrated these functions to pkg/timeave a long time ago
1555    o fixed bug introduced in pkg/monitor
1556    o accuracy ctrlprec = 32 insuffient for gradient checks using
1557      averaged fields (I/O via cost_averages)
1558      -> use ctrl.h in active_file*.F to control I/O precision.
1559    o paramter list of CALL ADTHE_MAIN_LOOP
1560    o added initial do_the_model_io to ecco
1561    o set all ...Freq to zero after cost_final
1562      taveFreq, dumpFreq, pChkptFreq
1563    o MAIN and ECCO differentiability restored
1564    
1565    checkpoint52j_post
1566    o fix nchklev in tamc.h for global_ocean...
1567    o Bringing flow and store directives up-to-date
1568    o Really weird thing!
1569      call do_the_model_io from the_main_loop with parameters
1570      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1571      TAF places a faulty re-call of initialise_varia
1572      after cost_final call which should not be there!
1573    checkpoint52j_pre
1574    
1575    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1576      error messages
1577    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1578    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1579      debug output
1580    o modfied mdsio_writefield.F to handle non-global files under exch2
1581    o update AIM Cubed-Sphere exp (aim.5l_cs):
1582      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1583    o update AIM Equatorial Channel exp:
1584      use standard aim_v23 pkg and change the SST fields to be more realistic.
1585    o globalFile now works with exch2
1586    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1587      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1588    o limit timeave output for hi-res integrations
1589    
1590    checkpoint52i_post
1591    o removed CPP_EEOPTIONS.h from verification/*/code
1592    o updated the tiling for global_ocean_pressure
1593    checkpoint52i_pre
1594    
1595    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1596      the old pkg/aim).
1597    
1598    checkpoint52h_pre
1599    o shortened offending lines in exch2_send_rx?.template
1600    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1601    o genmake2: add build & execute test for NetCDF code
1602    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1603      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1604    o added useSingleCPUIO flag to monitor.F and mon_out.F
1605    o added temporary hack for sea-ice dynamics on the cube:
1606      metric terms are ignored and it is assumed that
1607      there is no sea-ice on cube faces 1, 2, 4, and 5.
1608    
1609    checkpoint52f_post
1610    o added exch2 cube routines to pkg/exch2
1611    o modified hs94.cs-32x32x5 to use it
1612    o added new grid files to hs94.cs-32x32x5
1613    checkpoint52f_pre
1614    
1615    checkpoint52e_post
1616    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1617      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1618    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1619      to work with implicit vertical advection and AB ;
1620    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1621    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1622     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1623    checkpoint52e_pre
1624    
1625    o fix bug in impldiff when Nr=1 or Nr=2.
1626    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1627    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1628    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1629      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1630    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1631    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1632    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1633    
1634    checkpoint52d_post
1635    o re-tiled many expts to allow comparison in multi-processor mode
1636      - updated output accordingly
1637      - changed hs94.128x64x5 to use intial T from file rather than use the
1638        random number generator
1639    o add infrastructure in model routines for fizhi and gridalt packages
1640    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1641    o changes to permit hi-res, cubed-sphere, configuration
1642      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1643      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1644      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1645        of surface winds for the cube
1646      (A verification experiment, based on global_ocean.cs32x15, but with
1647       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1648       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1649       complete with example surface forcing files and matlab scripts to look
1650       at the output and compare it with that of global_ocean.cs32x15.)
1651    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1652       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1653       to conform to the common rule.
1654    o check-in the first version of the coupler + interfaces for multi-components
1655       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1656       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1657       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1658       - ocean and atmos. share the same horizontal grid (no interpolation).
1659       - exchanges between component and coupler is done in forward_step
1660    o new verification experiment, cpl_aim+ocn:
1661       coupled ocean - AIM atmosphere on cs32 grid.
1662    
1663    checkpoint52d_pre
1664    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1665    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1666    
1667    checkpoint52c_post
1668    o Fixing OPTIONS files for use of exf:
1669      - ALLOW_ECCO not needed
1670      - ECCO_CPPOPTIONS.h should not be included from
1671        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1672        as has been the case in the past
1673      - All cal/exf related options are currently set in
1674        single header file. Should remain so until we
1675        agree on a consistent new policy.
1676    o Removed all CPP options for cal package.
1677      cal has no more CPP options.
1678    o modified STOREs in GAD_ADVECTION
1679    o corrected key comp. for passkey
1680    
1681    checkpoint52b_post
1682    o new version: "thsice" of thermodynamic sea-ice pkg:
1683     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1684     - modify fluxes but do not change theta directly;
1685     - light cleaning of bulk_force pkg (still needed with thsice).
1686     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1687       + output_thsice.txt to test thsice & bulk_force pkgs.
1688    o put back grid & coriolis monitor output.
1689    checkpoint52b_pre
1690    
1691    o call "do_the_model_io" at the beginning (=> dump initial state)
1692    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1693    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1694      (need info on NUMBER_OF_PTRACERS)
1695    o missing PTRACERS headers in some routines
1696    o default tamc.h in pkg/autodiff supposed to crash
1697      to ensure proper customization
1698    
1699    checkpoint52a_post
1700    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1701      - moved surfaceTendencyTice from pkg/seaice to main code
1702      - subroutine FREEZE_SURFACE now limits only surface temperature
1703        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1704        => new output.txt for global_ocean.cs32x15 & global_with_exf
1705      - keep the old version of FREEZE for backward compatibility;
1706        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1707      - corresponding modifs for TAF directives
1708    o added surface flux output variables to TIMEAVE_STATVARS
1709    o time-averaged output for pkg/ptracers
1710    o fix problem with ECCO-related divided adjoint
1711      snapshot file was missing some ad-variables,
1712      but no warning issued by TAF
1713    
1714    checkpoint52a_pre
1715    o some bug fixes for #undef REAL4_IS_SLOW
1716    
1717    checkpoint52 = ecco_c52_e35
1718    o after testing adjoints of checkpoint51u_post
1719    
1720    checkpoint51u_post
1721    o this is the post-merge tag of the ecco-branch
1722      (needs another clean checkout and re-testing)
1723    o various natl_box_adjoint configs and results
1724      but no input fields
1725    o obcs adjoint not yet merged!
1726    o adding ECCO global 1x1 and 2x2 degree configs
1727    o updated/extended some store directives for seaice
1728    o pkg/ecco now containes ecco-specific part of cost function
1729    o top level routines the_main_loop, forward_step
1730      supersede those in model/src/
1731      previous input data.cost now in data.ecco
1732      (new namelist ecco_cost_nml)
1733    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1734    
1735    checkpoint51t_post
1736    o this is the pre-merge tag of the ecco-branch
1737    
1738    checkpoint51s_post
1739    o cleanup: removed various obsolete #define-s
1740    o pkg/grdchk
1741      - renamed 'ph-grd 3' to 'grad-res'
1742      - merged from ecco-branch
1743        (remaining bug fixes for obcs gradient checks)
1744      - additional high-precision output for testreport
1745        (grep for 'precision_grdchk_result')
1746    
1747    checkpoint51r_post
1748    o cleaned up or removed CPP_OPTIONS.h files
1749    o updated results for some of the tests to reflect the new
1750      optfiles (-ieee: -O0 instead of -O3)
1751    
1752    checkpoint51q_post
1753    o cd_code:
1754      - moved cd_scheme.F -> cd_code_scheme.F
1755      - separate read_checkpoint from cd_code_ini_vars.F
1756      - separated cd_code part from write_checkpoint
1757      - updated AD_SOURCE, generated .flow
1758      - added CD_CODE_VARS.h to the_main_loop
1759      - Moving cd_code specific store dir.s to pkg/cd_code
1760    o ctrl package totally restructured
1761      - pack/unpack now optional and decoupled from
1762        xx_/adxx_ I/O
1763      - ctrl_pack/unpack cleaned
1764        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1765      - confined inclusion of AD_CONFIG.h to where necessary.
1766    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1767    
1768    checkpoint51p_post
1769    o create initial cd_code package
1770      - WARNING: the initialization of fields within packages
1771        is broken because INI_FIELDS (where READ_CHECKPOINT is
1772        called) is called *before* PACKAGES_INIT_VARIABLES.
1773        This seems to be backwards since
1774        1) its important to initially zero the entire field including
1775           the "halo" region
1776        2) zeroing needs to be done *before* reading pickup info
1777           and the pickup call might or might not happen in any
1778           particular run
1779      - this needs an overhaul for R2
1780    o cleanup verification/*/code/GMREDI_OPTIONS.h
1781    o cleanup testreport
1782    
1783    checkpoint51o_post
1784    o bringing AD-related verif's up to date with genmake2
1785      - carbon/
1786      - global_ocean.90x40x15/
1787      - hs.94.1x64x5/
1788      - (front_relax/ )
1789    o (more) consistent directory structure for AD-related verif.'s
1790    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1791    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1792    o bug fix in find_alpha.F for MDJWF:
1793      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1794        change rho -> rho-rhoConst
1795      - replace call find_rho to find_rhonum
1796    o initialisation of rFlx extended to full array (required by TAF)
1797      and shifted to thermodynamics
1798    o removed PTRACERS.h in ptracers routine
1799    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1800    o Correcting initialisations for fVerU, fVerV.
1801    o helping TAF to recognize dependency on kUp for
1802      fVerU, fVerV
1803    o Replacing delZ by delR in pkg/ctrl/
1804    checkpoint51o_pre
1805    
1806    o undid all of cp51 pending some cleanups and discussion
1807    o added the [#include "AD_CONFIG.h"] statement to all files that need
1808       it for adjoint/tl #defines
1809     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1810     o removed tools/genmake since it no longer works
1811    
1812    checkpoint51n_post
1813    o modifications to make FREEZE flux visible to pkg/kpp
1814      - moved surfaceTendencyTice from pkg/seaice to main code
1815      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1816      - subroutine FREEZE now limits only surface temperature
1817        (this means new output.txt for global_ocean.90x40x15,
1818         global_ocean.cs32x15, and global_with_exf)
1819    o added surface flux output variables to TIMEAVE_STATVARS
1820    
1821    checkpoint51n_pre
1822    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1823    o added [#include "AD_CONFIG.h"] to all files that use the following
1824      defines:
1825      - ALLOW_ADJOINT_RUN
1826      - ALLOW_TANGENTLINEAR_RUN
1827      - ALLOW_ECCO_OPTIMIZATION
1828    
1829    checkpoint51m_post
1830    o incorporating changes to get TAMC/TAF working in genmake2
1831      - added new TAMC/TAF targets to the Makefile
1832      - various cleanups related to package handling
1833      - these changes should have no impact on the forward model
1834    
1835    checkpoint51l_post
1836    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1837     - faster algorithm for cal_addtime.F
1838     - higher precision arithmetic, where needed
1839     - pkg/exf *startdate variables changed from calendar date to
1840       model integration time
1841    
1842    checkpoint51l_pre
1843    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1844    o enable to apply restoring on S & T only in a latitude band.
1845    o update output (external_forcing_surf modif. change truncation errors)
1846       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1847    
1848    checkpoint51k_post
1849    o change default to: useNHMTerms=.FALSE.
1850     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1851       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1852     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1853        exp1, ideal_2D_oce
1854     - change data file of oceanic exp (leave the results unchanged for now)
1855       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1856    o set gravitySign automatically according to the vertical coordinate used
1857      (and change sign: back to "logical" value: +1 when R increases downward)
1858    o added an include barrier to the default CPP_OPTIONS.h and
1859      removed the #include "PACKAGES_CONFIG.h" from it
1860    o fix a bug in mom_fluxform (from chk51j_post)
1861    
1862    checkpoint51j_post
1863    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1864    o adjusted some flow directives (dynamics, thermodynamics)
1865    o added cubed-sphere case to test cost function
1866    o heckpoint_lev?_directives.h now include
1867      pkg-specific directives, whenever those are enabled.
1868    o Moving pkg-specific flow directives to corresponding pkg
1869      Moving pkg-specific differentiation list to corresponding pkg
1870      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1871      ---> conventions are
1872           - pkg_ad.flow
1873           - pkg_ad_diff.list
1874           - pkg_ad_check_lev?_dir.h
1875    
1876    checkpoint51i_post
1877    o merge of the branch-genmake2
1878      - knowingly breaks the older genmake
1879      - automatic generation of all ALLOW_${PKG_NAME} defines
1880      - new testreport supersedes older testscript
1881    o large number of package inclusion and header cleanups
1882    checkpoint51i_pre
1883    
1884    o new output for adjoin of global ocean vector invariant
1885    o fix for checkpoint of thermodynamic seaice and bulk_force
1886    o Steph gchem various cleanups
1887    
1888    checkpoint 51h_pre
1889    o fixed some single quotes
1890    o modify gchem pkg to be more versatile
1891    o modifications to clean up dic pkg
1892    o add pkg/cfc
1893    
1894    checkpoint51g_post
1895    o provide links for ARPACK and ADM*TLM
1896    o start removing verification/vero/
1897    o update AD-related stuff
1898      (in particular some IF-statements in model/src/ routines)
1899    o adding to verification/global_ocean.90x40x15/ adjoint of
1900      vector invariant setup
1901    
1902    checkpoint51f_post
1903    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1904    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1905      of tracer Green's fucntions for ocean inversion project.
1906    
1907    checkpoint51f_pre
1908    o Added on-the-fly spatial interpolation capability
1909        "USE_EXF_INTERPOLATION" to pkg/exf.
1910      - This is a temporary Cartesian-grid hack until
1911        the super-duper ESMF coupler becomes available.
1912      - See verification/global_with_exf/README for usage example.
1913      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1914        flags and modified pkg/seaice accordingly.
1915    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1916        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1917        non-local transport term.
1918    
1919    checkpoint51e_post
1920    o pkg/mom_vecinv:
1921      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1922      - add time-ave diagnostic of vorticity advection.
1923    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1924    o atmospheric geopotential: - include water vapor effect;
1925                                - use p^kappa in p* scaling.
1926    o land pkg: read initial state from files.
1927    o AIM : add stratospheric drag in the upper level
1928    
1929    checkpoint51d_post
1930    o change function ILNBLNK (=> last non-blank char.) to return zero
1931      (instead of the string length) when the string. char is empty
1932    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1933    o modif's to restore TAMC compatibility
1934      - avoid "_d" constructs in PARAMETER declarations
1935      - avoid interrupting lines by comment lines
1936    o Use cluster local disks for purely local I/O
1937      vs. globally visible disks needed for ctrl stuff
1938      (merged from ecco-branch)
1939      - new active_file_loc... and mdsio_..._loc routines
1940      - affected packages: autodiff, ctrl, grdchk, mdsio
1941    
1942    checkpoint51c_post
1943    o introducing integer flag debugLevel
1944      - debLevZero: suppress all output
1945      - debLevA: standard
1946      - debLevB: equivalent to current debugMode=.TRUE.
1947    o introducing pathname variable mdsioLocalDir for mdsio
1948      that can be specified at runtime
1949      (relevant for cluster I/O to local disk)
1950    `
1951    >>>checkpoint51b_post
1952    adjoint of ptracers
1953    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1954    o extended state in checkpoint_lev?, etc.
1955    o alternative ctrl/cost with tr1 or ptracer
1956    o new comlev1_bibj_ptracers
1957    o new ptracers.flow
1958    o made ptracers_forcing same as external_forcing_s
1959    o added verification for adjoint with ptracers
1960      - adm. grdchk fail so far
1961      - tlm. grdchk OK
1962      - checked tapelev/comlev recomputations: OK
1963    <<<checkpoint51b_pre
1964    
1965    checkpoint51a_post
1966    o added code for biogeochemistry package
1967      - new pkgs: dic, gchem
1968      - new subroutine in ptracers
1969    o modify code for biogeo packages
1970      - in model/src and pkg/ptracers
1971    
1972    checkpoint51
1973    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1974      - autodiff, ctrl, exf, grdchk, seaice
1975      kept separate packages
1976      - cost, ecco, obcs
1977    o updating verification/internal_wave, verification/lab_sea
1978      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1979    
1980    checkpoint50i_post
1981    o Preparing next differentiable checkpoint and sync
1982      of MAIN vs. ecco-branch
1983      - 1st step: this one is differentiable
1984      - 2nd step: next(! not this) checkpoint will have updated packages
1985                  from ecco-branch)
1986    
1987    checkpoint50h_post
1988    o new package "land": provide surface BC for AIM.
1989    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1990    o AIM: use true log-P extrapolation for near surface temp (= as in
1991        F.Molteni paper) ; update aim.5l_cs output.
1992    o New variable in PARM03 for more flexible pickups
1993    o somewhat cleaned package initialisation sequence for
1994      ctrl/ cost/ ecco/ in packages_... routines
1995    
1996    checkpoint50g_post
1997    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1998      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1999      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2000        made the default because of faster convergence than ADI
2001    
2002    checkpoint50f_post
2003    o exf totally restructured
2004      - replaced all exf_set_ routines by one generic exf_set_gen.F
2005        and made sure it's still differentiable
2006      - split exf_getffields.F into new exf_bulkformulae.F
2007      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2008      - updated adjoint/makefile and relevant verif. accordingly
2009    
2010    checkpoint50f_pre
2011     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2012          + change Evap over land. (update aim.5l_cs output)
2013     o added missing .cvsignores and made uniform across expts
2014     o changed configuration of tidal_basin_2d expt
2015     o added pkg/debug functions for tracing code in fatal crashes
2016     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2017     o new fn in pkg/monitor to stop model if solution grows too big
2018     o removed lots of single quotes from comments
2019    
2020    checkpoint50e_post
2021    o make KPP work with PTRACERS
2022     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2023       nearly a copy of kpp_transport_s
2024     - there is no analogue to SurfaceTendencyS, so I have to use
2025       gPtr(of the surface layer) instead
2026    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2027    checkpoint50e_pre
2028    
2029    checkpoint50d_post
2030    o change kpp output from multiple-record state files to single-record state
2031      files analogous to write_state.F
2032    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2033      analogous to the cg2d-related output.
2034    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2035      so that writing to internal file fn (with length 512) fails.
2036    checkpoint50d_pre
2037    
2038    checkpoint50c_post
2039    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2040    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2041    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2042    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2043    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2044    
2045    checkpoint50c_pre
2046    Merging from release1_p13:
2047    o bug fix for pkg/seaice dynamic solver
2048    o Added SEAICE_initialHEFF to pkg/seaice
2049    
2050    checkpoint50b_post
2051    o store u*,v* in gU,V instead of in guNm1,gvNm1
2052    o in order to put the momForcing out of the Adams-Bashforth:
2053      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2054      to timestep.F
2055    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2056    o re-generate output for highly sensitive test-exp:
2057       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2058    
2059    checkpoint50b_pre
2060    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2061    o corrected CPP option mismatch in exf_Bulk... functions for case
2062      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2063    
2064    checkpoint50a_post
2065    o Bug fix for merging between c50 and KPP.
2066      ikey was passed from thermodynamics to kpp_calc via
2067      common block rather than being recomputed in kpp_calc,
2068      in contradiction with new key itdkey.
2069      New key ikppkey created, and tamc.h headers updated.
2070    
2071    checkpoint50
2072    - 2nd step of merge with ecco-branch:
2073      merge changes in ecco-branch back into main trunk
2074    - bug fix in find_alpha
2075    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2076    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2077    - merged some sliced AD support routines
2078    
2079    checkpoint49
2080    merged from ecco-branch:
2081    o exf:
2082      - Enable initialisation of forcing fields to constant
2083        (runtime) values.
2084      - in exf_getffields.F
2085        Reduce i-/j-loop to interior domain, discarding overlaps.
2086        That also fixes wrong TAF-key computations for key_1, key_2
2087        with bulf formulae.
2088      - exf_init.F modify #ifdef for exf_init_evap
2089      - exf_getffieldrec.F, ctrl_getrec.F
2090        The following INT-usages are not safe:
2091          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2092          fldcount = int(fldsecs/fldperiod) + 1
2093        and were modified.
2094    o autodiff: checkpoint_lev...
2095      - updated storing for bulk formulae (some arrays were missing)
2096      - added state for seaice package
2097      - synchronized with main branch
2098    o DIVA:
2099      Modif.s in
2100      - the_main_loop.F
2101      - the_model_main.F
2102      and added cost_final_restore.F cost_final_store.F
2103      o With these changes, it is possible to fully separate
2104        the first forward run to compute the cost function (mdthe_main_loop)
2105        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2106        into separate model executions.
2107        This enables better tuning of DIVA to given queue sizes.
2108      o Loss of cost function value in consecutive DIVA runs is
2109        fixed by storing to 'costfinal' file.
2110      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2111        beginning/end of adjoint integration is accounted for.
2112      The current changes apply to TAF-1.4.26.
2113      TAF has one remaining bug, requiring one manual change
2114      (see MITgcm manual).
2115    o cal: synchronized between MAIN and ecco-branch
2116    
2117    checkpoint48i_post
2118    o Changes to restore differentiability of code w.r.t. previous tag
2119      (mostly adding new routines to make list and replacing
2120      pressure by totPhiHyd).
2121    o Updated and merged grdchk package
2122      - has both ADM and TLM checks
2123      - works for single- and multi-proc.
2124      - output cleaned
2125      - worked successfully for parallel DIVA
2126    o genmake:
2127      - Adding -platform=SP4
2128      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2129    o Modif. for DIVA:
2130      ctrl_unpack should not be called in intermediate DIVA interval.
2131      (similar thing would apply for active files such as
2132      tbar, sbar, psbar, which should not be reinitialised;
2133      only relevant for ecco-branch)
2134    
2135    checkpoint48h_post
2136    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2137    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2138    o Added SEAICE_initialHEFF to pkg/seaice
2139    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2140    
2141    checkpoint48g_post
2142    --- EOS:
2143    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2144      store total Potential in totPhyHyd for diagnostics & EOS.
2145    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2146    --- Pressure/geopotential gradient:
2147    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2148    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2149      ( changes results of global_ocean_pressure )
2150    o NLFS + z-coord.: add eta*Rho' contribution.
2151    o accurate phiHyd when using interface-W at the middle between 2 centers
2152     ( changes results of ideal_2D_oce )
2153    o includes r* 2nd term in potential gradient.
2154    
2155    checkpoint48f_post
2156    Merging from release1_p12:
2157    o Modifications for using pkg/exf with pkg/seaice
2158      - improved description of the various forcing configurations
2159      - added basic radiation bulk formulae to pkg/exf
2160      - units/sign fix for evap computation in exf_getffields.F
2161      - updated verification/global_with_exf/results/output.txt
2162    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2163      (SBO) core products, including oceanic mass, center-of-mass,
2164      angular, and bottom pressure (see pkg/sbo/README.sbo).
2165    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2166      to avoid negative values in shallow regions.
2167      - updated verification/natl_box/results/output.txt
2168      - updated verification/lab_sea/results/output.txt
2169    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2170    o Added useSingleCpuIO option (see PARAMS.h).
2171    o Updated useSingleCpuIO option in mdsio_writefield.F to
2172      work with multi-field files, e.g., for single-file pickup.
2173    o pkg/seaice:
2174      - bug fix in growth.F: QNET for no shortwave case
2175      - added HeffFile for specifying initial sea-ice thickness
2176      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2177    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2178      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2179    o pkg/seaice:
2180      - adjoint-friendly modifications
2181      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2182    
2183    checkpoint48e_post
2184    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2185    o dynamics: change definition of computational domain & adapt mom_fluxform
2186      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2187    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2188        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2189        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2190        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2191        inverted_barometer solid-body.cs-32x32x1
2192      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2193    
2194    checkpoint48d_post
2195    o in preparation for r*:
2196     a) use pre-computed gradient of hydrostatic potential:
2197        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2198     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2199        => affects results of glob_oce_pressure (different truncation error)  
2200      update output.txt of ideal_2D_oce & global_ocean_pressure
2201    
2202    checkpoint48d_pre
2203    o in preparation for r*:
2204      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2205      pass the 2 comp. of the grad. as arguments to momentum S/R.
2206      but for the moment, only used if it does not change the results.
2207    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2208    
2209    checkpoint48c_post
2210    Modifications in treatment of initial flux forcing controls
2211    to avoid extra storing of flux fields.
2212    
2213    checkpoint48c_pre
2214    o Added tidal_basin_2d experiment (currently 1D!)
2215    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2216    
2217    checkpoint48b_post
2218    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2219     (modification to pressure gradient not yet implemented)
2220    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2221      (for U & V) that are used for vertical advection of momentum.
2222    
2223    checkpoint48a_post
2224    o In preparation for r*, use temp. array to compute vertical transport
2225       in flux-form momentum pkg. => change results of few test-exp.
2226      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2227                        lab_sea, natl_box & plume_on_slope
2228    
2229    checkpoint48
2230    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2231    
2232    checkpoint47j_post
2233    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2234    o moved adexch from forward_step to addummy_in_stepping
2235    o added exch in ctrl_map_...
2236    o aveFreq.=0. at end of cost_final to avoid overwrite in
2237      reverse checkpointing loop
2238    o Yet more changes in gmredi:
2239      * adgmredi_calc_tensor
2240        avoiding all recomputation of gmredi_slope_limit
2241      * adgmredi_x/y/rtransport
2242        added flag for excessive storing to avoid recomp. of
2243        u/v/rtans, dTdx/y/z
2244        -> this is not really necessary and very memory-consuming
2245      * adgmredi_slope_psi:
2246        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2247      * gmredi_slope_limit
2248        re-activated full calculation of taperfct for case 'ac02'
2249    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2250    
2251    checkpoint47i_post
2252    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2253    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2254      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2255    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2256    o gmredi: fix few bugs.
2257    
2258    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2259    This will be a good checkpoint to plug into the ecco-branch.
2260    o few modif.'s to get latest version adjointed
2261      (mainly kick out code in ini_linear_phisurf)
2262    o modif's to run adjoint with exactConserv
2263    o case GM_BOLUS_ADVEC should be cleaned
2264      S/R gmredi_slope_psi should be cleaned
2265    o verification/carbon now has exactConserv=.TRUE.
2266    
2267    checkpoint47g_post
2268    o time-average AIM output: becomes independent from statvars time-average
2269      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2270    o After TAF bug fix:
2271      Tested adjoint of gmredi package.
2272      Tests were done with checkpoint47 rather than with latest
2273      checkpoint47f_post since the latter is broken for the adjoint
2274      verification/carbon/ contains both ADM and TLM gradient checks.
2275    Here they are, before they get changed/lost/stolen.
2276    Mostly modif.'s to fix numerical sensitivities.
2277    Gradient checks OK for
2278    - GM_taper_scheme:
2279      * clipping
2280      * ac02
2281      * linear
2282      * glw91
2283      * dm95
2284      * ldd97
2285    - GMREDI_OPTIONS:
2286      * GM_VISBECK_VARIABLE_K
2287      * GM_NON_UNITY_DIAGONAL
2288      * GM_EXTRA_DIAGONAL
2289      * GM_BOLUS_ADVEC
2290    in conjunction with data.gmredi parameters to be checked in
2291    in a few minutes under verification/carbon/code/
2292    
2293    checkpoint47f_post
2294    Merging from release1_p10:
2295    o modifications for using pkg/exf with pkg/seaice
2296      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2297        and SEAICE_EXTERNAL_FLUXES
2298      - pkg/exf CPP options EXF_READ_EVAP and
2299        EXF_NO_BULK_COMPUTATIONS
2300      - usage examples are Experiments 8 and 9 in
2301        verification/lab_sea/README
2302      - verification/lab_sea default experiment now uses
2303        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2304    
2305    checkpoint47e_post
2306    o created a tag prior to creating a branch
2307    
2308    checkpoint47d_post
2309    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2310      at the bottom boundary had an erroneous half slip boundary condition
2311    o added bottom drag and no slip boundary condition capabilities to
2312      oceanic pressure coordinates code
2313    o added new verification experiment global_ocean_pressure, this experiment is
2314      also described in the tutorial section of the manual
2315    checkpoint47d_pre
2316    
2317    checkpoint47c_post
2318    o Added a verification experiment for a global cubed-sphere ocean run
2319      -  verification/global_ocean.cubed32x32x30
2320      -  uses pkg/therm_seaice and pkg/bulk_forcing
2321    
2322    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2323    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2324      when using P-coordinate; only implemented for atmospheric config.
2325    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2326      NOTES: requires option NONLIN_FRSURF to be "#define".
2327    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2328    
2329    checkpoint47b_post
2330    Merging from release1_p9:
2331    o pkg/seaice
2332      - removed GOTO's and added taf directives
2333      - double precision constants to reduce the g77 (Linux)
2334        to F77 (SGI) differences reported in release1_p8
2335    o tools/genmake
2336      - added SGI options
2337    o verification/testscript
2338      - updated to that of checkpoint47a_post
2339    o verification/global_ocean.90x40x15/input/eedata
2340      - modified for SGI f77 compatibility
2341    o verification/lab_sea
2342      - added description of sea-ice model
2343      - added missing matlab routines
2344      - added test of thermodynamics parallelization
2345    
2346    checkpoint47a_post
2347    o new pkg: aim_v23
2348     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2349       for now, keep the same surface forcing as before.
2350     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2351     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2352     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2353    o add diagnostic of surface correction term in monitor output
2354    
2355    o bulk_force and therm_seaice
2356    - Two packages:  bulk_force (Bulk forcing)
2357      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2358    - Earlier integration from Stephaine Dutkiewicz
2359      and Patrick Heimbach.
2360    - Two ifdef statements for compile time,
2361       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2362    
2363    checkpoint47
2364    differentiable version of checkpoint46n_post
2365    o bug fix in quasihydrostaticterms
2366    o * "clean" adjoint code (in terms of extensive recomputations)
2367        can now be obtained for all GMREDI options (i.e. for
2368        - GM_VISBECK_VARIABLE_K
2369        - GM_NON_UNITY_DIAGONAL
2370        - GM_EXTRA_DIAGONAL
2371        - GM_BOLUS_ADVEC )
2372      * However, wrong gradient check problem remains unsolved.
2373      * New CPP options have been introduced for different
2374        tapering schemes
2375    o external_fields_load now part of differentiation list
2376    o pressure needs multiple storing;
2377      would be nice to have store_pressure at beginning or
2378      end of forward_step, e.g. by having phiHyd global (5-dim.)
2379      (NB: pressure is needed for certain cases in find_rho,
2380      which is also invoked through convective_adjustment).
2381    o recomputations in find_rho for cases
2382     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2383    o #define ATMOSPHERIC_LOADING should be differentiable
2384    o ini_forcing shifted to begining of initialise_varia
2385    o Incorporating QNVS line search routines into MITgcm
2386      (this is separate code, and therefore not under pkg)
2387      lsopt/, optim/
2388    o Updated verification/carbon/
2389      - #define GM_VISBECK_VARIABLE_K
2390      - GM_taper_scheme    = 'ldd97'    
2391    
2392    checkpoint46n_post
2393    Merging from release1_p8:
2394    o verification/natl_box:
2395      updating new external_fields_load routine
2396    o New package: pkg/seaice
2397      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2398      The sea-ice code is based on Hibler (1979-1980).
2399      Two sea-ice dynamic solvers, ADI and LSR, are included.
2400      In addition to computing prognostic sea-ice variables and diagnosing
2401      the forcing/external data fields that drive the ocean model,
2402      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2403      The implied surface heat flux is then stored in variable
2404      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2405      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2406      non-local transport term.  Because this call precedes model
2407      thermodynamics, temperature under sea-ice may not be "exactly" at
2408      the freezing point by the time theta is dumped or time-averaged.
2409      N.B.: fairly large differences in accuracy occur across
2410            different platforms/compilers; comparison between
2411            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2412            generated output gives:
2413       T           S           U           V
2414      C D M    c        m  s        m  s        m  s        m  s
2415      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2416      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2417      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2418    
2419      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2420    o GAD:
2421      - generated new common blocks to account for call of
2422        same gad routines with differing traceridentities
2423        (needed to modify tracerIdentity indices in GAD.h)
2424      - generated separate common blocks for case useCubedSphereExchange
2425        (Department of Futurology)
2426      - parameter lists to gmredi_?transport: added tracerIdentity
2427      - added new key indices to tamc.h
2428    o external_fields_load:
2429      - added this routine to TAF list
2430      - needed to make some common blocks global and additional storing
2431        along the same lines as exf package (checkpoint_lev?_directives.h)
2432    o exf:
2433      updated external forcing package
2434      - bug fixes carried over from ecco-branch
2435        (missing OBCS_OPTIONS.h in two routines)
2436      - enable easy to use "no forcing".
2437      - added exf I/O for atmospheric loading
2438      - added exf I/O for runoff data
2439      - transfered scaling between exf <-> MITgcm to exf namelist
2440    o Adding new verification experiment global_with_exf.
2441      This verification experiment is almost identical to the
2442      global_ocean.90x40x15 experiment, except that it uses
2443      the exf (and cal) package instead of the
2444      external_fields_load routine (cf README file).
2445    
2446    checkpoint46m_post
2447    o modified testscript to return -- when there are no lines of "%MON" output
2448    o added new flag "quasiHydrostatic" for QH mode
2449      and new routine quasihydrostaticterms()
2450    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2451      New routine: mom_u_coriolis_nh()
2452    o fixed sign of non-hydrostatic metric terms in u and v equations.
2453      Depend on correct sign of gravitySign.
2454    o added work.pc* to .cvsignore in aim directories using ifc
2455    o introduced flag for controllin non-hydrostatic metric terms
2456    o removed gravitySign from PARM04
2457    o switched to g77/ifc from pgf77 in aim experiments
2458    
2459    checkpoint46l_post
2460    o made convective adjustment work with pressure coordinates:
2461     - changed the direction of k-loop in convective_adjustment.F for the
2462       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2463     - adjusted the reference pressure k-index in convective_adjustment.F
2464     - adjusted the convection condition in convect.F (in analogy to
2465       calc_ivdc.F)
2466     - convective_adjustment no longer computes anything on the halos
2467     - removed the warnings about negative salinity from find_rho.F and
2468       find_alpha.F; instead the new routine look_for_neg_salinity, called
2469       at the beginning of find_rho, find_alpha, and find_beta, does a
2470       check of the entire slice, if CPP-option
2471       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2472    checkpoint46l_pre
2473    
2474    checkpoint46k_post
2475    o fixed the verification/global_ocean.90x40x15 experiment:
2476     - new bathymetry (the world according to A., JMC, and M.)
2477     - new initial fields and forcing fields (*.bin files)
2478     - new POLY3.COEFFS (for the next release one should switch to a full
2479       equation of state: JMD95P or MDJWF)
2480     - fixed several errors and redundancies in the data file
2481     - experiment uses looped cells
2482     - added matlab directory with diagnostic scripts for plotting of output
2483    
2484    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2485     - read AIM physics parameters from a file (data.aimphys)
2486     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2487    
2488    checkpoint46j_post
2489    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2490    o move wVel computation at the end of the time step, in S/R integr_continuity
2491    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2492    o update timeave pkg for wVel diagnostic.
2493    checkpoint46j_pre
2494    
2495    checkpoint46i_post
2496    o Clean up AIM package (and keep the results unchanged):
2497      include CPP_OPTION and use IMPLICT NONE in all routines ;
2498      declare all the variables _RL ; use _d 0 for all numerical constants.
2499      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2500    
2501    checkpoint46h_post
2502    o cleaned up the use of rhoNil and rhoConst.
2503      - rhoNil should only appear in the LINEAR equation of state, everywhere
2504        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2505        and the dynamical equations are all divided by rhoConst
2506    o introduced new parameter rhoConstFresh, a reference density of fresh
2507      water, to remove the fresh water flux's dependence on rhoNil. The default
2508      value is 999.8 kg/m^3
2509    o cleanup up external_forcing.F and external_forcing_surf.F
2510      - can now be used by both OCEANIC and OCEANICP
2511    checkpoint46h_pre
2512    
2513     Added code to convert surface volume flux (fresh water) into
2514     a mass flux when using P coordinates in the ocean (OCEANICP).
2515     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2516    
2517    checkpoint46g_post
2518    o Include a new diagnostic variable phiHydLow for the ocean model
2519      - in z-coordinates, it is the bottom pressure anomaly
2520      - in p-coordinates, it is the sea surface elevation
2521      - in both cases, these variable have global drift, reflecting the mass
2522        drift in z-coordinates and the volume drift in p-coordinates
2523      - included time averaging for phiHydLow, be aware of the drift!
2524    o depth-dependent computation of Bo_surf for pressure coordinates
2525      in the ocean (buoyancyRelation='OCEANICP')
2526      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2527        Theta, Salinity, and Pressure in the parameter list. This routine is
2528        presently contained in find_rho.F. This routine does not give the
2529        correct density for 'POLY3', which would be a z-dependent reference
2530        density.
2531    o cleaned up find_rho
2532      - removed obsolete 'eqn' from the parameter list.
2533    o added two new verification experiments: gop and goz
2534      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2535    checkpoint46g_pre
2536    
2537    checkpoint46f_post
2538    o Enable tangent linear (forward mode) gradient checks:
2539      - extended active file handling to g_... files
2540      - added TANGENT_SIMULATION to theSimulationMode
2541      - extended grdchk package accordingly
2542    o added tangent linear setup in verification/carbon/code_ftl
2543    o added adjoint setup in verification/front_relax/code_ad
2544    
2545    checkpoint46e_post
2546    o Added new equation of state -> MDJWF
2547      - EOS of McDougall et al., 2002, JAOT, submitted
2548      - caveat: the equation of state is only valid for a smaller (more
2549        realistic?) range of values than JMD95P/Z and UNESCO
2550      - added masks to the calculation of pressure in store_pressure
2551      - added more check values for density in check_eos (ini_eos.F), some of
2552        the old check values are out of the range of the MDJWF-eos, so don't
2553        expect perfect matches for those
2554    checkpoint46e_pre
2555    
2556    checkpoint46d_post
2557    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2558      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2559      case of pressure coordinates. eosType='JMD95Z' in
2560      combination with buoyancyRelation='OCEANICP' now causes an error.
2561    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2562      in find_alpha/beta.
2563    checkpoint46d_pre
2564    
2565    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2566      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2567    
2568    checkpoint46c_post
2569    o Changes necessary for ocean in p-coordinates
2570     -  Added new buoyancy relation = 'OCEANICP'
2571     -  Added new parameters = gravitySign (this used to be contained inside
2572        the factor dRdZ which I added when we first switched to R coordinates).
2573     X GM/Redi is not compatible (yet)
2574     X bottom drag and no-slip need to be debugged.
2575    checkpoint46c_pre
2576    
2577    checkpoint46b_post
2578    o Added new equation of state -> JMD95Z and JMD95P
2579      - EOS of Jackett and McDougall, 1995, JAOT
2580      - moved all EOS parameters into EOS.h
2581      - new routines ini_eos.F, store_pressure.F
2582    o Added UNESCO EOS, but not recommended because it requires
2583      in-situ temperature (see JMD95)
2584    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2585      unesco.f to be used with POLY3
2586    checkpoint46b_pre
2587    
2588    checkpoint46a_post
2589    o Added (atmospheric) pressure loading
2590      - new field in FFIELDS.h, etc...
2591      - new cpp flag ATMOSPHERIC_LOADING
2592    o Changed hFacC to _hFacC in calc_phi_hyd.F
2593    o Added SHORTWAVE_HEATING to some files for consistency
2594    checkpoint46a_pre
2595    
2596    checkpoint46
2597    further merges from release1_p5
2598    o new ctrl package
2599      - adopted from ECCO environment to enable optimization
2600      - added Eliassen Palm fluxes to controls
2601    o added Eliassen Palm flux controls to gradient check package
2602    o cost package
2603      - Compatible with new ctrl package
2604      - added Eliassen Palm cost hooks
2605      - modif's of existing cost functions
2606    o Adjoint-related bug fixes in kpp:
2607      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2608      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2609    o autodiff package
2610      - flow directives:
2611        + new for S/R do_the_model_io
2612        + enhanced for S/R checkpoint
2613        + new gmredi.flow
2614      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2615        disable adcommon.h/g_common.h by default.
2616      - fixed problem for adjoint of global_max
2617    o modified verification/carbon/
2618    o New setup for adjoint of global_ocean
2619    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2620    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2621    o incorporated hooks for sponge layer code (external_forcing.F)
2622    
2623    checkpoint45d_post
2624    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2625    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2626      (affects plume_on_slope "cg2d" output)
2627    o add new parameter deltaTfreesurf for free-surface time stepping
2628    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2629    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2630    o change phiMin in exp1 (to agree with documentation)
2631    o add new flags:
2632     - T,S forcing inside/outside Adams-Bashforth
2633     - turn off temp,salt advection and/or forcing
2634     - for each tracer, define internal flag for multiDimAdvection & A-B
2635    o monitor: change definition of KE to check conservation of Energy
2636    
2637    checkpoint45c_post
2638    o Removed f90 comments ("!")
2639    o Modified initialisations to enable exf package for MITgcm
2640      (without invoking ECCO_PACKAGE).
2641    o modifications to gradient check package (Martin Losch)
2642      - enable centered differences
2643      - modified format of standard output
2644    
2645    checkpoint45b_post
2646    o cleaned exchange calls in cg2d
2647    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2648    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2649      to configure barotropic setup (Martin Losch)
2650    o moved some initialisations within bi,bj loop in dynamics
2651      (TAF flow dependency)
2652    o in initialise_varia, moved call packages_init_variables
2653      before convective_adjustment_init
2654      (corresponding adjustment of TAF tape initialisation).
2655    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2656    
2657    checkpoint45a_post
2658    o compute Rho over the whole domain (extend iMin,jMin indices)
2659    o specific exchange for X-slice domain (case Ny=1)
2660    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2661    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2662    
2663    checkpoint44h_post = checkpoint45
2664    o Fix to restore differentiability:
2665      place at which packages_init_variables is called in
2666      initialise_varia is crucial for reverse control flow.
2667    o modifications in GMRedi to enable stable adjoint
2668      (corresponding modif's in thermodynamics, dynamics)
2669    o added missing hook for sponge layer code in external_forcing
2670    o modified test cost functions
2671    o storing in gad_advection (plus removal of write(0,*)!
2672    o missing headers TR1.h added in convective_adjustment routines
2673    o errorMessageUnit set non-equal zero in eeboot
2674      (conflict on some platforms, e.g. IBM SP3)
2675    o modified carbon verif.
2676    
2677    checkpoint44h_pre
2678    o vertical grid option: allow to put the Interface at the middle between
2679      2 cell-centers ; replace delZ in pkg/kpp by drF.
2680    o GM Advective form: Tracers are advected using the residual transport (=
2681      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2682    
2683    checkpoint44g_post
2684    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2685      results) ; ifdef missing in thermodynamics.F
2686    
2687    checkpoint44f_pre,checkpoint44f_post
2688    o added PTRACERS package
2689      This allows an arbitrary number of passive tracers to be integrated
2690      forward simultaneously with the dynamicaly model.
2691      + Implemented so far:
2692        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2693        - I/O and checkpointing
2694        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2695      + Not implemented so far:
2696        - KPP
2697        - OBCS
2698      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2699        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2700        line in data.pkg.
2701      + This package is disabled by default since it increases storage.
2702    
2703    
2704    o testscript: added -cleanup option
2705    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2706                 b) enable to filter 2D fields.
2707    
2708    checkpoint44e_pre,post
2709    o re-wrote convective adjustment to use pre-calculated weights
2710      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2711      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2712      Original calls to convect() still in place.
2713    
2714    chkpt44d_pre,post
2715    o added missing EXCLUDE_MONITOR flags
2716    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2717      (incompatible typ in MIN/MAX expressions caused problems
2718      on IBM SP3)
2719    o in genmake added variable MAKEDEPEND
2720      plus resetting for case SunOS
2721    o added timer_stats.c routine for IBM SP3
2722    o removed variables in dynamics
2723    !!! I forgot to create tag chkpt44d_pre !!!
2724    !!! But chkpt44d_pre = chkpt44c_post    !!!
2725    
2726    o real fresh water flux implemented with non-linear free-surface.
2727    
2728    chkpt44c_pre,post
2729    o few fix (mask in shap_s2, EmPmR in external_field_load,
2730      USE_NATURAL_BCS in solve_for_P);
2731    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2732    
2733    checkpoint44b_pre/_post
2734    o merge of relevant stuff from the ecco-branch:
2735      - genmake: removed $S64 overwrite for case SunOS
2736      - pkg/exf: update and corrections for field swapping and obcs
2737      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2738                  harmonized between ECCO and MITgcm
2739      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2740                      updated checkpointing_lev... lists for obcs
2741      - model/src: minor changes in forward_step, plot_field
2742                   added directive for divided adjoint in the_main_loop
2743      - pkg/mdsio: added mdsio_gl_slice
2744    
2745    o check parameters & config (chkpt44a_pre,post)
2746    o OBC and NonLin_FrSurf.
2747    
2748    checkpoint44
2749    o fix bug in mom_vi_del2uv
2750    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2751    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2752    o update AIM experiments (NCEP input files)
2753    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2754    o added some stuff for AD
2755    
2756    checkpoint43
2757    o added two new advection tests
2758    o added global 4x4 degree ocean test
2759    o added test of H&S94 with free surface on cube
2760    o some final mods for gradient check, adjoint,...
2761    
2762    checkpoint42
2763      Fixed AD-related problems:
2764    o Store directives up-to-date with re-arranged Adams-Bashforth
2765      (mainly thermodynamics.F)
2766    o New store directives for multi-dim. advection schemes
2767      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2768      * new common block and key passkey
2769      (mainly gad_advection.F)
2770    o Modified store directives for split of dynamics/thermodynamics
2771      for the case ALLOW_KPP
2772    o Cleaned argument list for timestep_tracer.F
2773    
2774    checkpoint41
2775    o re-formatted/added comments in prologues of key subroutines
2776      to work with protex
2777    
2778    checkpoint40
2779    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2780    o added FLT (floats) package from Arne along with demo. experiment
2781    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2782      implementation of forward-in-time forcing terms
2783    o more mods for non-linear free-surface including new variable
2784    o modified multi-dim method to work on cube
2785    o bug fix in KPP (from DM)
2786    
2787    checkpoint40pre9
2788    o added DST advection schemes
2789    o fix MPI bug on SGI's
2790    o modifications for non-linear free-surface
2791    o fixed conditionals for fixed flow/passive tracer only mode
2792    o added tension/strain form of stress tensor
2793    o changes to commenting of arguments for TAF/TAMC
2794    o added/updated many matlab scripts
2795    o added multi-dimensional advection method for tracers
2796      
2797    checkpoint40pre8
2798    o new package rw/
2799      Added method for dumping intermediate local arrays:
2800      mdsio_writetile - same as mdsio_writefield except works from inside
2801                        bi,bj loop
2802      mdsio_writelocal - same as mdsio_writetile except works for local
2803                         arrays
2804      write_local_r? - higher-level wrapper for mdsio_writelocal
2805      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2806      Example given at end of mom_vecinv.F that dumps some local arrays.
2807    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2808      control flux-form versus vector invariant code.
2809      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2810      or genmake -DISABLE ...
2811    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2812      (additional storing is now needed for case vecinv;
2813      currently nothing implemented to switch this storing off
2814      in case fluxform is used since no CPP flag available).
2815    
2816    checkpoint40pre7
2817    o bug fix in dynamics.F
2818      calc_viscosity called before k=1,Nr loop.
2819    o added some #ifdef's ALLOW_PASSIVE_TRACER
2820    o cleaned initialisations in ctrl_map_ini
2821      related to TAF
2822    
2823    checkpoint40pre6
2824    o split dynamics into thermodynamics & dynamics
2825    o corresponding split of calc_diffusivity into
2826      calc_diffusivity, calc_viscosity
2827      (kpp_calc_diff, kpp_calc_visc).
2828    o Added diffkr, kapgm to control variables
2829    o bug fix in gmredi_slope_limit for ldd97
2830    
2831    checkpoint40pre5
2832    o proper initialization of Adams-Bashforth time stepping
2833      + uses forward step for very first step of model (iter=0)
2834    o re-generated *all* output since almost all output is modified by this
2835      change (sorry but we've been putting this one off for about 2 years)
2836      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2837        *not* regenerated since they are already out of date and I don't
2838        want to create the impression that they are suddenly working.
2839    o removed KAP stuff for DEC's
2840    o modified/added many .cvsignore files in */code and */input
2841    o added new expt "solid-body.cs-32x32x1"
2842      + this uses an alternative form of ini_curvilinear_grid.F which
2843        is not necessarily any better than the current one...
2844    
2845    checkpoint40pre4
2846    o added re-initialisations of utrans,vtrans,rtrans in
2847      calc_common_factors which are crucial for TAF.
2848    o extended iMin,jMin range for calc_common_factors,
2849      calc_diffusivity
2850    o added option ALLOW_PASSIVE_TRACER
2851    o a few minor updates and fixes
2852    
2853    checkpoint40pre3
2854    o created calc_gtr1.F for gad package
2855    o split the_main_loop and re-introduced forward_step
2856    o some recomputations of nIter0 for TAMC
2857    
2858  checkpoint40pre2  checkpoint40pre2
2859  o Updated to latest branch of AJA, JMC  o Updated to latest branch of AJA, JMC
2860  o Added gradient check package  o Added gradient check package

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