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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.720 by jmc, Mon Aug 28 15:33:37 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    checkpoint58o_post
8    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
9      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
10    o change controling S/R for writing pickup file (new S/R do_write_pickup)
11      and clean-up reading/writing of pickup files.
12    o fix local version of read/write pickup (NH part) in rotating_tank/code
13    o simplify EXCH interface:
14     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
15     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
16    o added the regrid package
17    o shelfice:
18     - add a simple boundary layer scheme to reduce noise
19     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
20    
21    checkpoint58n_post
22    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
23       local variable (not in common block).
24    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
25      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
26      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
27        to work with SingleCpuIO.
28    o add "_d 0" to real constant of pkg/cfc subroutines ;
29       update exp. cfc_exemple & tutorial_cfc_offline output files.
30    o multi-threading and IO:
31      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
32        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
33      - barrier before and after reading.
34      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
35      - avoid using MDS_WRITELOCAL for LAND pkg output.
36      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
37        common-block variables ; Allows multi-threading with master-thread IO.
38    o change default MAX_NO_THREADS from 32 to 4 ;
39      and stop cleanly when MAX_NO_THREADS is too small.
40    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
41    
42    checkpoint58m_post
43    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
44       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
45    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
46       keep global_ocean.90x40x15 (for AD testing) with former secondary test
47       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
48    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
49        add MITgcm_tutorials (= code + all the tutorials)
50    o ecco, option to compute cost for total ssh (mean+anom)
51    o consistent with addition of ptracer and ssh in pkg/profiles
52    o profiles: adding ptracer and ssh
53    o testreport: change multi-test output-file name
54      (from output.txt.{name} to output.{name}.txt)
55    o profiles: now ok for mutli-tiles case
56    o seaice: add 4 parameters for different advection schemes for area,
57      (effective) seaice thickness, enthalphy, and snow height. Their default
58      is the standard parameter SEAICEadvScheme
59    o calc_gw:
60     - add cosFacU in zonal viscous flux (harmonic.visc.).
61     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
62       of tutorial_plume_on_slope.
63    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
64    o calc_gw: true flux-form, account for horizontal grid spacing.
65      update rotating_tank results, but not plume_on_slope (affected at
66      truncation level, 11 digits).
67    
68    checkpoint58l_post
69    o calc_gw:
70     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
71     - remove side-drag for now (need to fix it); update plume_on_slope results.
72     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
73    o commit code to make SST/SSS weights spatially variable
74      (based on either variable in-situ or variable initial T/S weights)
75    o pkg/ecco:
76      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
77        now based on horizontally varying weights wthetaLev, wsaltLev
78      * cost_averagesflags now returns year indices in addition to day, month
79      * sflux balance is performed on annual basis
80        (sflxumm, sfluxmm2, bal_sfluxmm)
81      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
82        including separate counting and multipliers
83    o pkg/rbcs
84      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
85    
86    checkpoint58k_post
87    o testreport:
88     - always build in dir. "build" (if not there, mkdir build instead of building
89       & running in input)
90     - run in dir run (if it exists), in build otherwise.
91     - call prepare_run (if input/prepare_run exists)
92     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
93    o pkg/exf modifications to interpolation and rotation routines for more
94       reasonable treatment of North Pole singularity: for tracers North Pole
95       value is set to northernmost zonal-mean value, for zonal velocity it is
96       set to zero, and for meridional velocity it is set to northernmost value.
97    o pkg/exf/exf_check_range.F
98     - add tile index to diagnostics and move stop statement to the very
99       end of the routine.
100    o pkg/diagnostics: (diagnostics_main_init.F)
101      define title of isomorphic variables according to the current config.
102    o pkg/thsice with pkg/seaice dynamics:
103    - fix domain of computation (interior only, required for exf) and do exchanges
104    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
105    o towards a standard way of dealing with multi-threading in MONITOR
106      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
107    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
108       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
109    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
110    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
111    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
112       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
113    o tracer advection:
114     - clean-up and simplify calc_common_factors.F
115     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
116       advection subroutine (but still not used within DST advection S/R)
117    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
118    
119    checkpoint58j_post
120    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
121      from file (collects calls previously in FORWARD_STEP)
122    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
123    o adjoint store dir. adjusted accordingly
124    o genmake2
125      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
126    
127    checkpoint58i_post
128    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
129      on wind stress (SEAICEstressFactor defaults to 1.)
130    o Total number of Timers is finite (<=40): comment out 2 non-essential one
131      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
132    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
133      on CS-grid: no longer loosing mass.
134    o exf & curvilinear-grid: no longer modify longitude xC & xG.
135    o pkg/ggl90: fix sloppy output and fix a bug
136    o pkg/seaice: added SEAICEuseEVPpickup parameter
137      - Set to false in order to start EVP solver with
138        non-EVP pickup files when using SEAICEuseEVP
139      - fix sign error in diffusion in seaice_calc_rhs
140    
141    checkpoint58h_post
142    * Modifications for bottom topography control
143      o replace hFacC by _hFacC at various places
144      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
145      o add non-self-adjoint cg2d_nsa
146      o update autodiff support routines
147      o re-initialise hfac after ctrl_depth_ini
148      o works for 5x5 box, doesnt work for global_ocean.90x40x15
149    * Adding verification for 5x5 box (4-layer) bottom topography control
150    
151    checkpoint58g_post
152    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
153       used for mean seasonal cycle, mean diurnal cycle); add an example
154       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
155    o pkg/ggl90:
156      - add parameter (minimum surface kinetic energy)
157      - fix bug (avoiding division by zero)
158    o couple pkg/thsice to pkg/seaice:
159      - modify advection in seaice to accomodate new scalar fields to be advected
160      - only muliDimAdection scheme work with seaice/thsice
161      - mapping of thsice-variables to seaice-variables, back and forth
162      - does not break the verification experiments, but does not give the
163        desired results either
164    o pkg/seaice
165      - make (default) second order advection a bit less confusing?
166    
167    checkpoint58f_post
168    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
169      to pkg/seaice):
170      - new routines thsice_map_exf and thsice_get_exf provide the interface
171      - add an additional formal parameter to thsice_solve4temp
172    o pkg/exf:
173      - add new fields wspeed, snowprecip (to be able to couple to thsice)
174      - correct Stefan-Boltzmann constant
175      - new parameter for longwave surface emittance
176      - separate some stuff from exf_bulkformulae into new routines  
177        exf_radiation, exf_wind
178      - add new parameters and constants: longwave emissivity for ocean, ice
179        and snow, evaporation parameters over ice
180      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
181        either wind from stress or stress from wind
182    o pkg/thSIce:
183    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
184    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
185       and THSICE_CALC_THICKN
186    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
187    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
188      to make debugging easier.
189    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
190    o pkg/bulk_force:
191      - clean-up comments and parameters ;
192      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
193    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
194      generate new output for test-experiment: aim.5l_cs.thSI
195    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
196      testreport accordingly
197    
198    checkpoint58e_post
199    o SEAICE_CGRID adjoint done
200    o R_STAR adjoint implemented.
201      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
202      * need to sort out init. of h0facc, etc.
203    o Make pkg/profile fully independent of ecco,cost, etc. stuff
204      to be able to use it in pure forward.
205    
206    checkpoint58d_post
207    o upgrade simple test-experiment to tutorial example:
208     step.1: duplicate the experiment and (step.2) will remove the old copy.
209      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
210      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
211      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
212      tutorial_global_oce_biogeo    <- copy of dic_example
213      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
214      tutorial_plume_on_slope       <- copy of plume_on_slope
215      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
216      tutorial_global_oce_optim     <- empty for now (David ?)
217      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
218     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
219    o correct a sign problem in cost_scat.F
220    o obcs and ptracers: fix boundary conditions for advections schemes
221      with larger stencil
222    o thsice adjoint: start
223    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
224      completeness
225    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
226      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
227    o ptracers adjoint:
228      * avoid extensive recomputatations
229      * fix missing re-init. of gptr (missed by TAF)
230    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
231      me to turn off the excessive output to STDOUT that this package produces
232    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
233      and add those terms in Vector-Invariant formulation.
234    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
235      if the control period (xx_hfluxperiod etc) is 0
236    o in profiles pkg, clean routines and fix details
237    o in ecco pkg, reading ssh data:
238      fix problem in case the model does not start at iter0=0
239    o fix mnc-pickup/restart for ptracers
240    o new package prifiles:
241      code to compute profile-based cost by Gael Forget
242      (modifs in ecco, ctrl, autodiff)
243    o Benign bug fix in initialization (spotted by M. Mazloff) of
244      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
245    
246    checkpoint58c_post
247    o adjoint: finish NLFS adjoint and provide reference output in
248      verification/global_ocean.90x40x15/results_ad_nlfs
249    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
250      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
251      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
252      with SEAICE_CGRID defined.
253    o move calendarDumps from "data" to "data.cal" and clean-up the code
254      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
255    o add useEXF & useCAL flags (for now, set in hard-coded way)
256    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
257      (were missing in NH mode, and wrong in quasihydrostatic mode).
258      waiting for Chris updated version of calc_gw to add those CALLs.
259    o fix bug in quasihydrostatic S/R ;
260      add a test for this option: global_ocean.90x40x15.qshyd
261    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
262      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
263    o add on/off flag useOffLine for package OFFLINE
264    o seaice:
265      - modify advection so that it works also on the C-grid
266      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
267        problem in multi-tile runs with C-grid
268      - add flags for clipping ice velocities and/or masking solver forcing
269      - fix drag (ocean on ice) formulation and a bug that caused noise in the
270        C-grid solver
271      - added a few comments to seaice_diffusion.F
272      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
273        are now exclusive)
274      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
275        required re-ordering the code a little:
276       + make DAIRN global variable (defined in SEAICE)
277       + move computation of the viscosities eta and zeta into a new separate
278         routine (because I need to recompute them in seaice_ocean_stress.F)
279    
280    checkpoint58b_post
281    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
282      update output.txt of exp. aim.5l_cs.thSI
283    o various mnc cleanups and improvements:
284      + shrink lookup tables by factor of ~4
285      + better error reporting when running out of lookup space
286      + able to handle longer path/file names (up to 500 chars)
287    o adjoint:
288      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
289      - TBD: "hidden" mom_vecinv recomp. in dynamics
290    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
291     (allow to differentiate between forcing components using new integer flags:
292      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
293     and add new flag to put Dissipation tendency out of Adams-Bashforth.
294    o ecco
295      - enable trend removal from SSH anomaly obs.
296    o adjoint
297      - a fix for PmEpR when #undef EXACT_CONSERV
298      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
299      - try to fix "hidden" recomp. in forward_step for NLFS
300        (NLFS seems broken sometimes after I checked it in)
301    o seaice:
302     - add c-grid version of the dynamic solver:
303       + three new routines that are the c-grid substitute lsr, dynsolver
304         and ostres
305       + put a few fields that were local to dynsolver into global common
306         blocks, so that I can move the computation of stresses etc into
307         seaice_lsr (saves coding but may break the adjoint).
308     - replace more hardwired parameters by runtime parameters
309     - add ice masks that mask the rhs of the implicit solvers where there
310       is no ice (commented out in seaice_dynsolver, because i am not sure
311       if this works properly), eventually this should replace the clipping
312       of ice velocities in seaice_dynsolver to +/-40cm/s.
313    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
314      include it only where its needed
315    o move balancing of fluxes before the call of external_forcing_surf
316    o seaice:
317      - correct units of turning angles (now they are really in degrees)
318      - move computation of GWATX/Y out of main routine into dynsolver
319      - initialize GWATX/Y in seaice_init
320    o Apply mask on Fresh-Water flux (needed for SSH forcing).
321      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
322    o seaice: add runtime flags for turning angles (default to zero)
323    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
324      and trend from exf forcing and ctrl control adjustments
325    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
326      (since checkpoint57x_post)
327    o change the default rotation period to 86164.s = the Earth rotation
328    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
329      and based on a reference stratification. Tested within hs94.cs-32x32x5.
330    o seaice advection: add code for choosing between the default (2nd order
331      central differences) and multiDim advection schemes provided by
332      pkg/generic_advdiff
333    o seaice:
334      - removed all references to SEAICE_GRID.h fields from
335        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
336        (cubed-sphere configuration will change a little)
337      - grid computations in seaice_init are obsolete now.
338      - cleaned up code a little so that is easier to read (hopefully).
339      - added new (better?) discretizations of default advection and diffusion
340        (turn on with SEAICEuseFluxForm)
341      - replace 1 in 3d global fields by kSurface in growth.F
342      
343    checkpoint58a_post
344    o seaice:
345      - bug fix in advect.F
346    o shelfice:
347      - separate shelfice load anomaly from pload (breaks with time
348        dependent forcing), => introduce constant field shelficeLoadAnomaly.
349        Its default is 0., but it may be computed more cleverly from (unknown)
350        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
351        done offline. A good approximation of the pressure load anomaly is
352        necessary to avoid large initial adjustment processes underneath
353        deep-reaching shelfice.
354      - small fix in ISOMIP shelfice_thermodynamics
355      - add more sophisticated thermodynamics of Hellmer (1989), this is
356        now the default
357      - give a few constants more intuitive names
358    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
359      if bulk formulae are used in long integration (especially EmPmR). Turn
360      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
361      if balancePrintMean, the imbalance that is substracted is printed to
362      STDOUT.
363    o fix bug (typo) in obcs_apply_eta.F
364    o add a new package shelfice which enables us to model the circulation
365      underneath shelf-ice with draughts of hundreds of meters.
366     - works
367     - to do: + include improved thermodynamics
368              + check whether kSurfC (from model/inc/SURFACE.h) can be used
369                instead of new field kTopC
370              + can we use topoFile, Ro_surf and existing code in ini_depth.F
371                instead of new field R_shelfIce and new code in ini_depth.F
372                and ini_mask_etc.F?
373              + adjust vertical mixing schemes?
374    o seaice pkg:
375     - add a cpp-flag to include a simple formula for a salinity dependent
376       freezing point of sea water at the surface
377     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
378       meridional stresses are now different (and hopefully correct)
379    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
380       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
381       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
382    o pkg/diagnostics: add options and parameters for regional-statistics
383       diagnostics ; define regions by reading a region-mask from a file
384       (might add other options later)
385    o pkg/bulk_force:
386     - add option and parameters to use AIM surface-flux formulae.
387     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
388       others forcing fields (defined in PARM05, parameter file "data") are loaded
389       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
390     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
391     - use the right EXCH call for uwind,vwind (to work on CS-grid).
392     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
393       and parameters (note: calcWindStress replaces .NOT.readwindstress).
394     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
395    
396    checkpoint58
397    o add "--embed-source" option to genmake2 which, when the supporting
398      tools can be compiled (as determined by genmake2) will turn on the
399      embed_files package which then embeds the entire MITgcm source code
400      (*.[fFhc] + Makefile) used for the build within the executable
401      - requested by CNH but off by default
402      - adds a paltry <9MB to the mitgcmuv executable in most cases
403      - only writes the output when useEMBEDSRC in eedata is true
404    o clean up 3-dim. relaxation codes:
405      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
406      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
407      * Thanks to Tom Haine for testing!
408    
409    checkpoint57z_post
410    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
411      affects output (@ truncation level) of exp. plume_on_slope ; updated.
412    o fix the pickup behavior for obcs in combination with ptracers
413    o fix a bug in ptracers_external_fields_load
414    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
415      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
416    o transfered surface NH pressure to eta field (if exactConserv).
417    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
418         and update lab_sea output.txt file.
419    o completing 3-dim. relaxation code: additional term
420         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
421      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
422      * At compile time, in "EXF_OPTIONS.h" set
423          #define  ALLOW_CLIMTEMP_RELAXATION
424          #define  ALLOW_CLIMSALT_RELAXATION
425      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
426          tauThetaClimRelax3Dim = 15552000.0,
427          tauSaltClimRelax3Dim  = 15552000.0,
428      * 3 cases:
429          1) Use a constant-in-time 3-dim. field
430          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
431          3) Real-time relax. to time-evolving prescribed field
432    o Adding Laplacian-type smoothness constraint on
433      initial and boundary (forcing) controls (ic, bc)
434      * enable at compile-time via
435        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
436      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
437      * Absolute scale somewhat unclear so far
438      * no area weighting was included since no other cost term does so far
439    
440    checkpoint57y_post
441    First step for a NLFS adjoint
442    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
443    o new init. routines for calc_r_star, calc_surf_dr
444    o still need to deal with ini_masks_etc
445    o testreport seemed happy
446    checkpoint57y_pre
447    
448    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
449    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
450    o add new offset feature to offline pkg (plus minor cleanup)
451    o cfc fixes for final year of integration
452    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
453      be in GCHEM_OPTIONS).
454    
455    checkpoint57x_post
456    o fix testreport Pb in multiple test experiment.
457    o cleanup our namelist syntax in verification:
458      - make it more F95 standards compliant (some work still needed)
459      - allows the vast majority of our tests to work with gfortran
460    o Non-Hydrostatic:
461     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
462     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
463    o Allow to apply AB on T,S rather than on AB(gT,gS):
464     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
465     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
466       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
467     - need a "clever" read_pickup to restart from the other AB formulation
468    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
469    o remove some unused variables (reduces number of compiler warnings)
470    o adjoint
471      * Disable useVariableViscosity for adjoint for time being
472        (there are a number of extensive recomputations)
473      * Initialize certain variables needed for adjoint
474    
475    checkpoint57w_post
476    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
477                 fix the singleCpuIO RS version of MDSWRITEFIELD
478       and add a WARNING if using globalFiles=T with multi-processors.
479    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
480      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
481    o tracer advection scheme:
482      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
483       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
484       was not very convenient).
485      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
486       (further tests needed for the implicit DST & Flux-Limiter schemes).
487    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
488      and sRef for convenience, handy, when you want to initialize
489      ptracers in a large domain with a constant non-zero value. Also,
490      untangle ptracers_init.F a little.
491    
492    checkpoint57v_post
493    o change dome exp. to use variable viscosity in side-drag terms.
494    o remove all the files from the cfc_offline test since they are now
495      incorporated into tutorial_cfc_offline which has been producing
496      identical results for a few days of testing
497    o add new parameter: sideDragFactor to enable half-slip-side BC
498      and change side-drag S/R to use viscosity from mom_calc_visc
499      (can switch back by setting sideDragFactor=0.); affects results at
500      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
501       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
502    o vorticity & strain are now computed without masking, to account for
503      no-slip-side BC in variable viscosity calculation ; mask is applied
504      anyway later on, before computing advection/coriolis terms.
505    o modify exp4 to test new obcs support for reading from external files
506      and for passive tracers
507    o fix behavior of ptracers_monitor when monitor output is written to a
508      netcdf-file; still not independent of monitor.F (writes in the same
509      file).
510    o change default value of tRef (put a uniform, meaningful value for ocean
511      & atmos) and initialize sRef (was missing, as Martin mentioned).
512    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
513      to be proportional to enstrophy dissipation length.  Thus,
514       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
515      This is now consistent with Smagorinsky and with the manual.
516    
517    checkpoint57u_post
518    o OBCS and PTRACERS: add open boundary support for passive tracers
519      - either use homogenous (pseudo) v.Neumann conditions or prescribe
520        OB-values from file; this is not different from the way theta and salinity
521        are treated
522      - however, Orlanski-radiation conditions are not supported, and the model
523        will stop if you use pTracers and Orlanski at the same time.
524      - beefed up the rountine obcs_external_fields_load: now only those open
525        boundary values are overwritten with values from files for which there
526        are really files, otherwise the OB-fields remain untouched. This makes
527        it possible to use different OBs at different ends of the domain (as
528        with EXF)
529    o reduce number of exch calls in shap_filt (s2).
530    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
531      truncation level) 4/5 MLAdjust test results (11&12 digits match).
532    
533    checkpoint57t_post
534    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
535    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
536      same truncation, independent of the face number: affects affects several
537      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
538    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
539      note that biharmonic viscosity + no-slip was not tested in any experiment.
540    o fix bug in non-linear free-surf side-drag ; generate new output for
541      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
542    o make mnc honor the writeBinaryPrec flag for most kinds of output
543    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
544    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
545      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
546    o add brackets in multi-terms sum to get same truncation, independent of
547      the face number (manage to get exactly same value of gU,gV at the cs-edge)
548      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
549    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
550      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
551      a maximum grid-scale Reynolds number.  Also, changes all length calculations
552      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
553      Suggested values of viscosity parameters found in mom_calc_visc.
554      Many new viscosity diagnostics available.
555    
556    checkpoint57s_post
557    o Add clearing-house for viscosity calculations, mom_calc_visc and
558      correct numerous bugs in LeithD and Smagorinsky discretizations.  
559      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
560      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
561      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
562      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
563      The Strain-Tension form is now called with useStrainTensonVisc=.true.
564      ViscAhStrain and viscAhTension are now retired.
565    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
566    o In response to JMC's bug report, genmake2 now ignores any soft-links
567      that it finds in the *current* directory when searching for files.
568      Soft-links found in any other source directories will still work as
569      they did before.
570    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
571      a C routine to unlimit the stack size
572    o mnc-ify pkg/aim snapshot vars
573    o mnc-ify pkg/land as requested by Daniel
574    o various changes to mnc including:
575      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
576      - output can now be grouped so that all files within a group
577          change the ITER portion of their names in lock-step together
578      - can now read ("global") PER-FACE (in addition to PER-TILE) files
579          and works with both EXCH1 and EXCH2 (but needs more testing)
580      - writing works for all verification test cases w/ g77 on Linux
581    
582    checkpoint57r_post
583    o make MNC variable initialization happen earlier
584    o add diagnostics for (almost) each term of the momentum Eq.
585    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
586    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
587    o remove MINIMAL_TAVE_OUTPUT option ;
588      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
589    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
590      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
591    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
592    o add time-dependent SST, SSS control
593    o cost terms in ecco/ modularized (new cost_generic.F)
594    o cost_averages routines are modularized (new cost_averagesgeneric.F)
595    o new infrastructure for seaice model vs. obs misfits in seaice/
596      * driver from the_main_loop.F is seaice_cost_driver.F
597      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
598      * gradient check in Exp. 6a of natl_box_adjoint/
599    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
600      (see README file)
601    
602    checkpoint57q_post
603    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
604    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
605      - bug was reported by Jean-Michel and Ian Fenty
606    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
607      update exp. cpl_aim+ocn output.
608    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
609      Needed for high-res. runs with large global files
610      to be able to limit tapelev size
611    o Changed some tests for adjoint:
612      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
613      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
614      * global_ocean.90x40x15/ back to default 3-level checkpointing
615    o Modifications to enable scripted COMMON to MODULE conversion
616      * verification/OpenAD/code/ has necessary scripts and description;
617      * converts, compiles and runs successfully;
618    
619    checkpoint57p_post
620    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
621    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
622      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
623    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
624    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
625      (was already the case for dissipation with mom_vecinv,
626       and also the case for grad.PhiHyd when staggered-timeStep)
627      This will allow to put dissipation out-off the AB time-stepping.
628     Unfortunately, affects truncation error. Update output of exp. that "fails"
629      (cg2d matching number) and leave the others for later: front_relax(10),
630      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
631      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
632    
633    checkpoint57o_post
634    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
635      (2) its ready to be documented during the 20050801 DocFest
636    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
637      for ideal_2D_oce and lab_sea on linux_ia32_g77
638    o set to #undef CTRL_SET_OLD_MAXCVARS_30
639      in global1x1_tot/code_seaice_adj to access indices 32, 33
640      (worth another tag)
641    
642    checkpoint57n_post
643    o adding precip control xx_precip 32
644    o adding swflux control xx_swflux 33
645    o Replacing 10 forcing penalty cost routines by 1 generic.
646    o Implementing partitioning in time-mean and variable adjustment
647      for atmos. state.
648    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
649    o in natl_box_adjoint:
650      * updated exp 1 to 10
651        (but does not have time-mean vs. variable split results yet)
652    o updated global1x1/*_seaice_adj/
653      to incorporate latest changes
654    o enable useSingleCpuIO for mdsio vector routines
655      (applies in particular to tapelev I/O)
656    o removed inefficient K-loop in all active_file*control*.F
657    
658    checkpoint57m_post
659    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
660      and advect_cs (use EXCH-2 and standard cs-32 grid files).
661    o pkg/exch2: filling of face-corner halo regions is optional
662      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
663    
664    checkpoint57l_post
665     tag before updating tutorials (pre-release-2)
666    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
667       for output and interpolation of input fields onto model grid)
668    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
669       Affects results of exp. rotating_tank ; update output.txt.
670    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
671          and taking the square quantity and/or using a fraction-weight field.
672    o fix aim_diagnostics_init.F mate numbers.
673    o add mnc output capability to diagnostics/diagstat and update
674      our cvsignore files for the ACSII output generated
675    
676    checkpoint57k_post
677    o lab_sea now uses diagnostics package and provides a suite of
678      new EXF diagnostics output.
679    
680    checkpoint57j_post
681    o exf
682      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
683        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
684        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
685      * extended diagnostics output
686        - now includes all EXF variables
687        - hs, hl moved to common block
688        - separate S/R for diagnostics, called after ctrl vector is added
689        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
690        - EXFqnet contains true Qnet (i.e. includes qsw)
691      * updated verif. lab_sea, global_with_exf
692      * Rearranging hflux (exf_mapfields -> exf_getforcing)
693        to ensure that diagnostics sees a true EXFqnet
694    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
695    o diagnostics pkg: change pointers so that 1 diagnostic can be used
696      several times with different frequencies.
697    o mnc-ify the thsice package as requested by Daniel Enderton
698      - the monitor--MNC output needs work
699      - many attributes need to be added (most are currently blank)
700    o mnc-ify theaim_v23 package as requested by Daniel Enderton
701      - many attributes need to be added (most are currently blank)
702    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
703    o add Sadourny like discretization to the 4th.O vorticity advection scheme
704    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
705      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
706         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
707    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
708     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
709    
710    checkpoint57i_post
711    o Diagnostics package was changed: diagnostic allocation is now deactivated
712      by setting an empty file name in the namelist (used to be by setting 0 frequency)
713    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
714      add 1rst Order upwind vertical Shear.
715    o add a quick fix for A/B checkpointing in OFFLINE mode
716    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
717      end-run around the C/Fortran linking horror in eesup/src/timers.F
718    o added pkg/runclock: allows user to terminate run based on wall clock
719    o added non-hydrostatic scaling parameter: nh_am2
720    o pkg/my82: futile attempt to make results compiler-independent by adding
721      some "_d 0", etc. no effect.
722    o for mnc output, fill the 'T' coordinate var with myTime and create a
723      separate 'iter' variable for iteration count
724    o pkg/diagnostics:
725      add new capability: output of Global/Regional & per-level statistics ;
726      tested against monitor output (including land & thSIce) on various exp.
727    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
728    
729    checkpoint57h_done
730      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
731      data.diagnostics, data.gchem, data.ptracers) is done.
732    
733    o pkg/diagnostics: prepare for Global/Regional statistics.
734      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
735    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
736      and rename it: DIFFERENT_MULTIPLE
737    
738    checkpoint57h_post
739    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
740    o pkg/diagnostics: change output frequency, now in seconds (instead
741      of Nb of iterations). This requires to change data.diagnostics.
742    checkpoint57h_pre
743    
744    o in mnc, let the user create the output dir if both mnc_outdir_date
745      and mnc_outdir_num are false
746    o add fflags() to pkg/diagnostics which allows one to specify, on a
747      per-file basis, the file precision [default behavior is unchanged]
748    o added diagnostics to pkg/kpp, including computation of mixed layer
749      depth based on a temperature/density criterion
750    o updated verification/natl_box to test the new pkg/kpp diagnostics
751    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
752    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
753    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
754      not mnc -- this mistake was found by JMC and is now corrected
755    
756    checkpoint57g_post
757    o add Adams-Bashforth 3rd Order time stepping:
758      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
759      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
760    checkpoint57g_pre
761    
762    o make lambda[Theta,Salt]ClimRelax spatially varying
763      (default remains spatially uniform constant based on tau)
764    o added new control variables
765      * init. uVel, vVel, etanN
766      * lambda[Theta,Salt]ClimRelax
767    o separate masks used for ctrl_pack/unpack 'from write_grid' output
768      (suggested by G. Forget)
769    
770    checkpoint57f_post
771    o add parameter "baseTime" = model base time = time at iteration zero
772      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
773      account for baseTime shift
774    o move Coriolis arrays from PARAMS.h to GRID.h
775    checkpoint57f_pre
776    
777    o mnc-ifying the seaice package
778    o introduced an alternative length scale calculation for use in the limiting
779      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
780    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
781    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
782      as well as grad(vort3).  Made it compatible with both approximate form
783      for the cubed sphere and full form of these gradients.  Added flag
784      useFullLeith to select between approximate and full form.  
785    o add "d0" in getcon.F to reduce differences between compilers/platforms
786      update output.txt of exp. fizhi-gridalt-hs
787    o change port_rand funtion to allow to set the seed.
788    o fix obscure MNC bug involving conversion between reals and integers
789      - it caused no problems with certain (eg. gcc, ifc) compilers but the
790        new version is now more standards-compliant
791    o adjoint-related modifications
792      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
793      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
794      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
795    
796    checkpoint57e_post
797    o Adding eddy stress controls a la Ferreira et al.
798    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
799    
800    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
801      update output.txt of exp. fizhi-gridalt-hs
802    o add more "Z" dimensions and associated coordinate vars to MNC
803    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
804    o parameter calendarDumps: when set, approximate months (30-31 days) and years
805      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
806      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
807      months and years.  Requires pkg/cal.
808    o diagnostics: add pickup functionality
809      - off by default for backwards compatibility
810      - current version only uses MDSIO -- MNC will be added
811    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
812    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
813    
814    checkpoint57d_post
815    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
816    o modify verification/ideal_2D_oce so that it tests the creation of mnc
817      output from the diagnostics package
818    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
819    o make genmake2 more portable by using ".$FS" instead of ".f" for more
820      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
821    o add coordinate variables to the MNC output from the diagnostics package
822    o change MNC-flags default value: true when useMNC=TRUE
823    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
824      the ability (off by default) to read the grid information using MNC
825    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
826    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
827    o do snap-shot diagnostics at the middle of the time-interval (instead of
828      at the end).
829    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
830      new test for AIM with thSIce + slab-ocean
831    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
832    o move state variable diagnostics to the beginning of the time step ;
833      (note: still needs some work specially for snap-shot diagnostics)
834      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
835    
836    checkpoint57c_post
837    o Change testing option (-ieee) to get closer agreement between g77 & ifort
838    o generate new output.txt files on faulks with g77 & the new -ieee option
839    checkpoint57c_pre
840    
841    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
842      update output.txt of exp. global_ocean.90x40x15
843    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
844      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
845    o add saltFlux(+File) forcing capability with periodicExternalForcing
846    o allow to use pkg diagnostics for GM-Redi & ThSIce output
847    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
848    o improvements for the MNC output from DIAGNOSTICS:
849      - correct handling of the unlimitied dimension
850      - all dims now have associated coordinate variables
851      - variables located at U, V, and Corner ("Z") points are now written
852        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
853        *all* data points are output
854    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
855    o added pkg/seaice/seaice_monitor.F
856    o mdsio_readfield.F can now read files visible only to master MPI process.
857    o pkg/seaice: some test code for ice-modified ocean stress
858    o exf_getffields interpolation defaults to bilinear for all scalar forcing
859      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
860      spurious negative numbers for precipitation and humidity.  Will cause
861      some small numerical differences for integrations using pkg/exf/exf_interp.F.
862    o pkg/ctrl/
863      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
864        May be enabled via doPackDiag
865      *  introduce z-scaling of
866         + gradient (doZscalePack) and
867         + control (doZscaleUnpack)
868    o pkg/mdsio/
869      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
870      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
871    
872    checkpoint57b_post
873    o simplify options in diagnostics_fill arguments (remove weird combinations)
874    o fix MNC coordinate variables so that they now contain per-face index
875      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
876      general, EXCH2 grids are only aligned to a "local" coordinate system
877    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
878    o Implement instantaneous output within pkg diagnostics:
879      setting a negative frequency in data.diagnostics produces
880     "snap-shot" output (as opposed to time-average if freq > 0)
881    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
882      NOTE: change ptracer diagnostics name: use 2 characters to work with
883            more than 9 tracers. Add also diagnostics of advect & diffus flux.
884    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
885      becomes the coordinate variable for the 'T' dimension
886    o add CF-style coordinate variables to MNC
887      - just a first cut:  numbers are meaningless on the cubesphere and
888        missing along the T axis but otherwise it works!
889    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
890    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
891    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
892      this is based directly on what the model compute, so that the content of
893      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
894    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
895    o clean up build options files for SunOS, in particular
896      - remove -traditional from xmakedepend
897      - change -xarch=v9 to -xarch=native for f77
898      - restore use of make (not gmake)
899      - add CC=gcc if using g77
900    o changes per discussion of AM, JMC, & EH3 today:
901      - move redundant "grid" variables out of "state" -- in preparation of
902        creating proper CF-style coordinate variables and in recognition
903        that any/all grid variables can be easily copied (eg. w/NCO) from
904        the grid files into any of the other NetCDF files
905      - *always* output grid variables with MDSIO (this will eventually be
906        changed)
907      - output MNC grid file if useMNC is true
908    o every instance of _END_MASTER() has been found and replaced with
909      _END_MASTER( myThid ) in order to satisfy certain picky Sun
910      preprocessors
911    o re-arrange diagnostics pkg initialisation:
912     - allow each package to extend the available diagnostics list
913     - add some checking and fix small problems (multi-threaded, ...)
914     - new S/R diagnostics_fill (replace fill_diagnostics):
915       look through the short list of active diag. (instead of the long list)
916       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
917    
918    checkpoint57a_post
919    o this set of changes restores TAMC compatibility
920      tested for global_ocean.90x40x15 adjoint on trough
921      (what a pain)
922    
923    checkpoint57a_pre
924    o some modifs in tools/build_options for sunos
925    o call ctrl_pack for ctrl at end for optimcycle=0
926    
927    checkpoint57
928    o add horizontal bi-harmonic viscosity for vertical velocity
929      - new parameter viscA4W (defaults to viscA4)
930      - affects only non-hydrostatic code
931      - to be done: no-slip lateral boundary conditions
932    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
933    o implement Implicit Vertical advection for pTracers
934    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
935      (implemented also for implicit vertical diffusion & advection)
936    o OBCS: extend application of tracer open boundary conditions
937      to a strip beyond the boundary of width Olx/Oly
938    o add call monitor to TAF set of required calls (flow directives)
939      and include in natl_box_adjoint
940    o untangle a few ifdefs related to cost, ctrl, autodiff
941      untangel a few ALLOW_ECCO_OPTIMIZATION
942    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
943      (theta2, salt2 in ecco_cost_weights)
944    
945    checkpoint56c_post
946    o OBCS as control variables
947      - update ctrl_ad_diff.list, obcs_ad_diff.list
948      - remove balance of obcs controls from default
949      - fix index bug nobcs in ctrl_init
950      - fix dummy fields filen in ctrl_pack
951      - add dummy weights for obcs
952    o lsopt: comment out fort.94 output
953    o optim:
954      - remove unnecessary header files
955      - adjusted namelists
956      - add xerbla.F to Makefile
957    o exf:
958      - multiple modifications of exf_check_range
959      - unit change in exf_init_runoff from [m/year] to [m/s]
960    o mdsio:
961      - i/o-vector change debugLevel from debLevA to debLevB
962    
963    checkpoint56b_post
964    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
965      is called from DO_THE_MODEL_IO
966      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
967      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
968      - clean up PTRACERS_WRITE_TIMEAVE a little
969    o add another verification experiment that tests both the cfc-pkg and
970      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
971      reactive tendencies treated inline with regular timestepping
972    o testreport previously did a lousy job of comparing small numbers, so
973      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
974      implemented in the little c-progam tmp_cmpnum.c which is embedded in
975      testreport.
976    o ptracers_monitor: bug fix for MPI
977    
978    checkpoint56a_post
979    o GCHEM: finish reorganizating the package
980      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
981        (introduces another 3D-array for each passive tracer, but only if
982        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
983        gchemTendency is not needed because the timestep is done separately)
984      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
985      - GCHEM is now---more or less cleanly---separate from PTRACERS
986      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
987        so clear to me how that should be done in a general way.
988    o CFC: improve formatting of output in CFC_ATMOS
989    o PTRACERS:
990      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
991        that ALL experiments with ptracers enable can be checked. This makes
992        GCHEM_MONITOR obsolete.
993      - include a runtime parameter PTRACERS_monitorFreq that defaults to
994        monitorFreq
995      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
996    o add PTRACERS (PTR0[1-5]) to testreport output
997    o exf_check_range:
998      * default changed to .TRUE.
999      * will check values for niter0 if debLevA, every timestep if debLevB
1000      * STOP in exf_check_range if 'out of range'
1001      * range chosen generous to allow for potential extema
1002      TBD: a version with stricter range
1003           permitted range would be runtime parameters
1004    o GMredi:
1005      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1006      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1007      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1008    o GCHEM:
1009      - move call to GCHEM_FORCING_SEP, so that it is now called before
1010        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1011      - introduced a useGCHEM runtime flag and applied it everywhere.
1012      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1013        this flag is now only visible within GCHEM-pkg routines.
1014      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1015        be replaced by a 3D array that is computed before thermodynamics; for
1016        this, the tracer ID iTracer had to be included into the parameter list
1017        of ptracers_forcing
1018      - set up forward_step to call gchem_forcing, that will replace
1019        gchem_forcing_int in ptracers_forcing
1020      - cleaning up
1021    o small cleaning of exch2: remove files that are also in eesupp/src
1022    
1023    checkpoint56
1024    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1025    o mnc: cleanup "full" files--fixes out-of-memory problem
1026    o ECCO-GODAE
1027      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1028      * fully merged and updated from SIO code
1029        windstress sign change affects
1030        - exf_inscal_[u/v]stress
1031        - sign of xx_tau[u/v] adjustments
1032        - signs in cost_scat
1033      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1034      * natl_box_adjoint updated and compressed
1035      * 2-level checkpoint switch added
1036        (tested in EXP. 1 of natl_box_adjoint)
1037      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1038    o SVD
1039      * first complete, non-hacked version for SVD calculations
1040      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1041        performed via direct access files admtlm_vector.it????
1042        (via ctrl_[un]pack)
1043      * optimcycle is used for ARPACK iteration counter
1044        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1045      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1046        and add linear transforms where necessary
1047      * controls are initial/final SST, SSS (can be extended; need to check
1048        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1049    o mdsio: filename info to both stderr, stdout
1050    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1051      from sign change
1052    
1053    checkpoint55j_post
1054    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1055      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1056    o add consistent build directories and .cvsignore files to verification
1057    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1058    o make all subroutines 30 or less characters in length for certain older
1059      compilers to work (a thorough search only turns up two routines in
1060      pkg/ptracers)
1061    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1062      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1063    
1064    checkpoint55i_post
1065    o change arrays for total vertical diffusivity (2.D if explicit,
1066      3.D if implicit) ; each ptracer uses its own background value.
1067    o added mnc/NetCDF output capability to ocn_compon_interf
1068      - added bits to verification/cpl_aim+ocn so that it can run on
1069        ITRDA and other clusters without the mpirun "-wd" option
1070    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1071      configuration
1072    o give MNC the ability to create additional files rather than
1073      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1074      - the default is just less than 2GB which is a practical limit
1075        on many systems
1076    o Compute the non-local term using either KPP vertical diffusivity (=default)
1077       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1078    
1079    checkpoint55h_post
1080    o add verification test "vermix"
1081    o remove all the *_ioinc flags and replace with the single global
1082      outputTypesInclusive flag
1083    o allow to set a vertical profile of vertical diffusivity for T & S
1084    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1085    o useMNC moved from data.mnc to data.pkg
1086    
1087    checkpoint55g_post
1088    o Renaming carbon AD experiments to comply with testreport conventions
1089    o Updating adjoint of Held-Suarez hs94.1x64x5
1090    o Fixing directives for non-ECCO forward_step, after ECCO directives
1091      have been fixed to avoid recomp. of do_oceanic_phys
1092      Works well for global_ocean.90x40x15,
1093      but recomp. issue remains for carbon
1094    o Updating adjoint output for natl_box_adjoint after
1095      pkg/ecco has been modified (see taga c55d_post)
1096    
1097    checkpoint55f_post
1098    o rename to timeave_init_fixed
1099    
1100    checkpoint55e_post
1101    o some delicate re-shuffle of store directives to avoid one
1102      extra call of do_oceanic_physics
1103      affects ecco_the_main_loop.F, do_oceanic_physics.F
1104      checkpoint_lev1_directives.h
1105    o NB: this may break global_ocean adjoint temporarily,
1106      but it is clear how to fix it. Will do later, need this now.
1107    
1108    checkpoint55d_post
1109    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1110    o ecco_cost_weights is modified to 1x1 runs
1111    o modifs to allow observations to be read in as
1112      single file or yearly files
1113    o enable to read exf forcing fields as either
1114      single file or yearly files (flag useExfYearlyFields)
1115    checkpoint55d_pre
1116    
1117    o switch between 2-level and 3-level checkpointing
1118    o add ability of MNC to write local and "partial" (eg. 2D slices where
1119      the full 3D field is never actually stored) arrays to NetCDF files
1120      with the correct (that is, the complete multi-dimensional) set of
1121      array indicies
1122      - used in mom_vecinv() to write the diagFreq output
1123      - tested (demonstrated) in verification/aim.5l_cs
1124    o further mnc-ification
1125      - add verification/lab_sea to the list with mnc setups
1126      - fix undefined mnc v-names in cd_code
1127      - add kpp to mnc output (both snapshot and timeave)
1128    o non-hydrostatic code
1129      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1130        in calc_gw.F
1131      - defaults to viscAh
1132      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1133        friction or Leith) in non-hydrostatic mode, as long as there is
1134        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1135    o pkg/cost
1136      extend simple cost functions to treat time mean quantities
1137      (T,U,V) via cost_accumulate_state from cost_tile
1138    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1139        be 2 times larger than the minimum size the advection scheme requires.
1140        now get a perfect conservation of salt in advect_cs test-exp (updated)
1141    o GGL90 (Gaspar's TKE mixed layer)
1142      - add horizontal diffusion of TKE, requires exchanges in
1143        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1144        default. In OPA there is no horizontal diffusion of TKE but the
1145        mixing coefficients are computed from a horizontal average of TKE of
1146        6 points or so. I think that diffusion has a little more physical
1147        justification.
1148      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1149        was in vain)
1150      - mask tke-variable in ggl90_init
1151    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1152    o fix biharmonic diffusion on CS-grid.
1153    o more obcs stuff
1154      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1155        for reading boundary values. This routine is called from
1156        obcs_prescribe_read
1157      - updated obcs_check
1158      - changed sponge layer relaxation parameter units for days to seconds
1159      - turned off sponge layer by default
1160      - changed argument list of OBCS_CALC to myTime+deltaTclock
1161      - fixed about 35 bugs in obcs_external_fields_load
1162    
1163    checkpoint55c_post
1164    o obcs stuff
1165      - new runtime flags useOBCSprescribe, useOBCSbalance
1166      - re-arranged obcs_calc
1167      - moved exf_getobcs to obcs_prescibe_read
1168        obcs_prescibe_read is called after ORLANSKI stuff
1169        and independent of it (executable can contain all).
1170      - updated obcs_check
1171      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1172        These may be necessary only if tangential velocities are
1173        prescribed at OB, not sure, needs testing.
1174    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1175      which simplifies the calls and passes the ifc check-bounds test
1176    
1177    checkpoint55b_post
1178    o add a 2D scalar, Z location, exchange_2 routine.
1179    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1180      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1181      affects advect_cs results (for the wrong reason): update output.txt
1182    o use a more standard discretization for biharmonic viscosity ;
1183     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1184      affects results of dome set-up: update output.txt
1185    o fix gad_advection.F (CubedSphere part), back to version 1.23
1186    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1187    
1188    checkpoint55a_post
1189    o merged code to
1190      * prescribe/read time-dependent open boundaries
1191        (works in conjunction with exf, cal)
1192      * sponge layer code for open boundaries
1193      * each boundary N/S/E/W now has its own CPP option
1194        (healthy for the adjoint)
1195    
1196    checkpoint55
1197    o up-to-date adjoint of previous breaks
1198      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1199      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1200      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1201      - carbon: * remove tr1-related adjoint verification
1202                * add ptracer as control variable
1203    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1204      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1205    
1206    checkpoint54f_post
1207    o in verification/carbin/ remove experiment related to
1208      ALLOW_PASSIVE_TRACER (array tr1 etc)
1209      code_ad/ input_ad/ results_ad
1210    
1211    o add two new packages
1212      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1213        + subject to optimization (memory)
1214      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1215        + subject to reordering (many GOTOs in the original code)
1216        + so far opps is called for every (i,j) point, and then operates in
1217          the vertical; one may want to reorder the scheme in order operate in
1218          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1219          fields)
1220    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1221      - all verification tests compile and run with linux_ia32_g77
1222      - defaults are compatible with current input files--nothing
1223        should change if you were not previously using MNC
1224      - MNC output has been added in numerous places (eg. timeave)
1225        but there are still a few writes not yet do-able with MNC
1226        (this is in progress)
1227      - flags now allow for either/or/both use of MDSIO and MNC and
1228        documentation will soon follow
1229      - numerous small formatting cleanups for ProTeX
1230    o add version info (via BUILD_INFO.h) to MNC and stdout
1231    
1232    checkpoint54e_post
1233    o add two new packages
1234      - pp81 (Packanowski and Philander, 1981), Richardson number and
1235        stratification dependent mixing
1236      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1237      - these scheme operate in a similar manner as KPP (without ghat, of
1238        course), however there is only one diffusivity that is used for both
1239        temperature and salinity (and passive tracers)ç
1240    o add offline package
1241    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1242      provided by Stephanie Dutkiewicz
1243    o genmake2: add ability to search for C compilers and cleanup test output
1244      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1245    
1246    checkpoint54d_post
1247    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1248    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1249      leading to additional shift by 5 days each year of integration
1250       (i.e. leading to considerable offset over the years)
1251    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1252    o start with no AB and no initial filtering (staggerTimeStep):
1253      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1254    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1255      (external loading & cpl import/export stay in forward_step.F)
1256    o update coupling interface to work with new staggerTimeStep
1257    o change MDSIO ptracers_pickup.
1258    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1259    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1260    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1261    
1262    checkpoint54c_post
1263    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1264      this affects (truncation error) output.txt of test-exp:
1265       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1266    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1267    o change Qnet to always be the net heat flux, (+upward).
1268      affects (truncation error) output of natl_box exp.: updated
1269    o define the max number of passive tracers in PTRACERS_SIZE.h
1270    o start to test mnc routinely in exp0
1271    o add sea-ice loading (sIceLoad) as a new forcing field.
1272    
1273    checkpoint54b_post
1274    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1275       impressive on Altix and Opteron systems)
1276    o diagnostics can now write NetCDF files through the mnc package
1277    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1278    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1279    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1280      affects (truncation error) output of lab_sea & natl_box exp.: updated
1281    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1282    
1283    checkpoint54a_post
1284    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1285    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1286    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1287    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1288      + internal_wave (shift in writing cg2d_ini_res)
1289    checkpoint54a_pre
1290    
1291    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1292      - modified verification/lab_sea and natl_box_adjoint accordingly
1293    
1294    checkpoint54
1295    checkpoint53g_post
1296    o prepare splitting of thermodynamics: store convect.counter in common block
1297    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1298      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1299    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1300    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1301    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1302    o restore adjointability
1303    
1304    checkpoint53f_post
1305    o modifications that affect AIM experiment results (update output.txt):
1306      - no advection of S at top interface Nr (pkg/generic_advdiff)
1307      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1308    o AIM pkg:
1309      - include stability function into surf.Flux derivative relative to Tsurf
1310      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1311    
1312    checkpoint53e_post
1313    o merged cylindrical coord configuration
1314    o added rotating_tank experiment
1315    checkpoint53e_pre
1316    
1317    checkpoint53d_post
1318    o faulks upgraded: re-generate output.txt that have changed:
1319       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1320    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1321    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1322    o added Sadourny discretization of Coriolis
1323      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1324      - re-enabled use of omega3 (useAbsVorticity)
1325    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1326      vector-invariant equations
1327      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1328    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1329      hopefully without new bugs
1330      - still to do: biharmonic friction for non-hydrostatic w
1331    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1332    o regenerated output for global_ocean_ebm (using -ieee)
1333    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1334      of mom_common/
1335      - simple re-arrangement of instructions within computing loop
1336    checkpoint53d_pre
1337    
1338    checkpoint53c_post
1339    o new version of coupler for AIM+thSIce and Ocean models
1340     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1341     - land: change Evaporation of snow
1342     - aim with thSIce: fix bug in snow-precip.
1343    o changes to calc_gw.F
1344     - bug fix for w^2 term near the bottom boundary
1345     - (hopefully) improve the lateral slip boundary condtions for use with
1346        partial/looped cells
1347      - because the bug fix changes two verification experiments anyway (exp5
1348        and plume on slope), change the lateral boundary condition from half slip
1349        to the value of no_slip_sides
1350    o ebm package wasnt quite up to the parallel task. Fixed that.
1351    o Adjoint of EBM package + verification
1352      * TLM OK
1353      * ADM not sufficient accuracy yet (needs further testing)
1354    
1355    checkpoint53b_post
1356    o Commiting new energy balance model to repository
1357      * package is pkg/ebm
1358      * verif. is verification/global_ocean_ebm
1359      * references are in ebm_driver.F
1360    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1361    C        Global thermohaline circulation. Part I:
1362    C        Sensitivity to atmospheric moisture transport.
1363    C        J. Climate 12(1), 71-82
1364    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1365    C        Global thermohaline circulation. Part II:
1366    C        Sensitivity with interactive transport.
1367    C        J. Climate 12(1), 83-91
1368    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1369    C        Destabilization of the thermohaline circulation
1370    C        by atmospheric eddy transports.
1371    C        J. Climate 7(12), 1870-1882
1372    o Will need long integration testing.
1373    checkpoint53b_pre
1374    
1375    o created pkg/mom_common in preparation for variable viscosity code
1376    o renamed and split ini_mnc_io
1377    o pkg/land: only liquid water can diffuse or run-off
1378    o AIM using land: soil wetness availability account for snow
1379    o added printMapIncludesZeros to EEPARMS namelist
1380    
1381    checkpoint53a_post
1382    o restore TAMC compatiility for exf_constants.h
1383      (no usage of _d in .h)
1384    o Additional storing in KPP in an attempt to fix
1385      TAMC problem with adjoint of KPP code.
1386      (no success...)
1387      Identical code works fine with TAF.
1388    o Fixed verification/natl_box_adjoint experiments.
1389      Initial conditions for Experiments 4 and 5 are now
1390      set to "SEAICE_initialHEFF=0", which is more reasonable,
1391      and hence gives results closer to that of Experiment 2.
1392      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1393    
1394    checkpoint53
1395    o stable checkpoint with up to date adjoint
1396      TLM tests only run for 1st grdchk at the moment. Its unclear if
1397      this is a code problem or a problem with resetting code for g_
1398      variables that is being autogenerated wrong.
1399      Otherwise:
1400       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1401       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1402         are both still in chaos following their security messes.
1403    
1404    checkpoint52n_post
1405    o various build (mostly genmake2) changes including:
1406      - ability to build/run more easily within Cygwin and MacOS X
1407      - more complicated Makefiles with a stronger dependence on Gnu Make
1408    o pkg/seaice modifications
1409      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1410        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1411        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1412      - changed proxy for geostrophic velocity and updated
1413        verification/lab_sea/results/* accordingly
1414      - removed ADI dynamic solver from pkg/seaice
1415      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1416        they caused a segmentation fault under certain circumstances
1417      - removed unused field WATR
1418    o bug fix in exf-package:
1419      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1420         now reflect that.
1421    o small fixes in the cal-package:
1422      - set reference date to first of January for the 'model'-calendar
1423      - failing of cal_CheckDate in cal_FullDate now actually results in a
1424        warning
1425    o small modifications in exf-package to increase flexibility:
1426      - change climtempfreeze from a constant to a runtime parameter that
1427        is specified in data.exf_clim (default = -1.9)
1428      - introduce runtime parameter windstressmax (default = 2.0) that is
1429        specified in data.exf
1430    o fix in pkg/thsice:
1431      - update Evap (Tsf changes) to be consistent with Latent heat flux
1432      - maintain snow precipitation unchanged (even if Tsf >=0).
1433     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1434    
1435    checkpoint52m_post
1436    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1437      this does not change any of the results, because myIter=0 in swfrac always
1438      lead to jwtype=2 (the default anyway), but the call makes little sense
1439      as a default
1440    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1441    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1442      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1443    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1444    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1445    o extending useSingleCpuIO option to work with new exch2 I/O format
1446      - old-style, missing-tile I/O is still accessible by defining CPP
1447        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1448    o monitor package can write to NetCDF files and/or STDOUT
1449    o fix re-definition bug in MNC_GRID_INIT_ALL()
1450    o doc/api_reference added
1451      - a framework for building an API Reference Manual using all
1452        the "protex" comments embedded in the code
1453      - see pkg/generic_advdiff, pkg/mnc for examples
1454    o MNC:
1455      - make myThid the last argument for all subroutines
1456      - new default for the grid files: NO halos
1457      - add useMNC and other run-time flags
1458      - separate per-file-group handling of the unlimited dimension
1459      - early initialization of MNC w/ flags read at the eeboot stage
1460        and lookup tables set in initialize_fixed
1461      - write all MNC output to a freshly-created directory
1462    o thermodynamics sea-ice (thsice) is now tested with testreport.
1463    o test exp. advect_cs: use the standard cs32 grid ; update output.
1464    o Added functionality to grdchk:
1465      pick global i,j,k position (or nearest wet) where to perform check.
1466    
1467    checkpoint52l_post
1468    o new land formulation:
1469      a) use ground enthalpy as prognostic variable to ensure exact
1470         energy conservation.
1471      b) account for water temperature and for latent heat of freezing
1472         in all processes (rain, run-off, ground storage)
1473      c) compute surface and ground temperature implicitly.
1474    o aim_v23 modification for new land model:
1475      a) Treat separately land / ocean / sea-ice surface fluxes
1476         to allow implicit computation of land & sea-ice surface temp.
1477      b) add snow precipitation.
1478    checkpoint52l_pre
1479    
1480    o fix problem (when 1 tile is empty) in min/max monitor.
1481    o fix bug in timeAve (u,vZetatave in common block)
1482    o no restoring terms under ice for pkg/seaice
1483    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1484    o bug fix for pkg/seaice pickups
1485    o change MNC call locations and add coordinate attributes
1486    o mask vorticity at the corner ; affects global_ocean.cs output
1487    o fix ini_curvilinear_grid ; test CS experiments with mpi
1488    o aim.5l_cs: modify sea-ice fraction input file ; update output
1489    o exf: Adding simple range check routine for exf fields after read
1490    
1491    checkpoint52k_post
1492    o removed top-level directory "diags"
1493      - we migrated these functions to pkg/timeave a long time ago
1494    o fixed bug introduced in pkg/monitor
1495    o accuracy ctrlprec = 32 insuffient for gradient checks using
1496      averaged fields (I/O via cost_averages)
1497      -> use ctrl.h in active_file*.F to control I/O precision.
1498    o paramter list of CALL ADTHE_MAIN_LOOP
1499    o added initial do_the_model_io to ecco
1500    o set all ...Freq to zero after cost_final
1501      taveFreq, dumpFreq, pChkptFreq
1502    o MAIN and ECCO differentiability restored
1503    
1504    checkpoint52j_post
1505    o fix nchklev in tamc.h for global_ocean...
1506    o Bringing flow and store directives up-to-date
1507    o Really weird thing!
1508      call do_the_model_io from the_main_loop with parameters
1509      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1510      TAF places a faulty re-call of initialise_varia
1511      after cost_final call which should not be there!
1512    checkpoint52j_pre
1513    
1514    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1515      error messages
1516    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1517    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1518      debug output
1519    o modfied mdsio_writefield.F to handle non-global files under exch2
1520    o update AIM Cubed-Sphere exp (aim.5l_cs):
1521      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1522    o update AIM Equatorial Channel exp:
1523      use standard aim_v23 pkg and change the SST fields to be more realistic.
1524    o globalFile now works with exch2
1525    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1526      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1527    o limit timeave output for hi-res integrations
1528    
1529    checkpoint52i_post
1530    o removed CPP_EEOPTIONS.h from verification/*/code
1531    o updated the tiling for global_ocean_pressure
1532    checkpoint52i_pre
1533    
1534    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1535      the old pkg/aim).
1536    
1537    checkpoint52h_pre
1538    o shortened offending lines in exch2_send_rx?.template
1539    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1540    o genmake2: add build & execute test for NetCDF code
1541    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1542      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1543    o added useSingleCPUIO flag to monitor.F and mon_out.F
1544    o added temporary hack for sea-ice dynamics on the cube:
1545      metric terms are ignored and it is assumed that
1546      there is no sea-ice on cube faces 1, 2, 4, and 5.
1547    
1548    checkpoint52f_post
1549    o added exch2 cube routines to pkg/exch2
1550    o modified hs94.cs-32x32x5 to use it
1551    o added new grid files to hs94.cs-32x32x5
1552    checkpoint52f_pre
1553    
1554    checkpoint52e_post
1555    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1556      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1557    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1558      to work with implicit vertical advection and AB ;
1559    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1560    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1561     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1562    checkpoint52e_pre
1563    
1564    o fix bug in impldiff when Nr=1 or Nr=2.
1565    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1566    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1567    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1568      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1569    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1570    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1571    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1572    
1573    checkpoint52d_post
1574    o re-tiled many expts to allow comparison in multi-processor mode
1575      - updated output accordingly
1576      - changed hs94.128x64x5 to use intial T from file rather than use the
1577        random number generator
1578    o add infrastructure in model routines for fizhi and gridalt packages
1579    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1580    o changes to permit hi-res, cubed-sphere, configuration
1581      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1582      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1583      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1584        of surface winds for the cube
1585      (A verification experiment, based on global_ocean.cs32x15, but with
1586       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1587       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1588       complete with example surface forcing files and matlab scripts to look
1589       at the output and compare it with that of global_ocean.cs32x15.)
1590    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1591       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1592       to conform to the common rule.
1593    o check-in the first version of the coupler + interfaces for multi-components
1594       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1595       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1596       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1597       - ocean and atmos. share the same horizontal grid (no interpolation).
1598       - exchanges between component and coupler is done in forward_step
1599    o new verification experiment, cpl_aim+ocn:
1600       coupled ocean - AIM atmosphere on cs32 grid.
1601    
1602    checkpoint52d_pre
1603    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1604    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1605    
1606    checkpoint52c_post
1607    o Fixing OPTIONS files for use of exf:
1608      - ALLOW_ECCO not needed
1609      - ECCO_CPPOPTIONS.h should not be included from
1610        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1611        as has been the case in the past
1612      - All cal/exf related options are currently set in
1613        single header file. Should remain so until we
1614        agree on a consistent new policy.
1615    o Removed all CPP options for cal package.
1616      cal has no more CPP options.
1617    o modified STOREs in GAD_ADVECTION
1618    o corrected key comp. for passkey
1619    
1620    checkpoint52b_post
1621    o new version: "thsice" of thermodynamic sea-ice pkg:
1622     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1623     - modify fluxes but do not change theta directly;
1624     - light cleaning of bulk_force pkg (still needed with thsice).
1625     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1626       + output_thsice.txt to test thsice & bulk_force pkgs.
1627    o put back grid & coriolis monitor output.
1628    checkpoint52b_pre
1629    
1630    o call "do_the_model_io" at the beginning (=> dump initial state)
1631    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1632    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1633      (need info on NUMBER_OF_PTRACERS)
1634    o missing PTRACERS headers in some routines
1635    o default tamc.h in pkg/autodiff supposed to crash
1636      to ensure proper customization
1637    
1638    checkpoint52a_post
1639    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1640      - moved surfaceTendencyTice from pkg/seaice to main code
1641      - subroutine FREEZE_SURFACE now limits only surface temperature
1642        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1643        => new output.txt for global_ocean.cs32x15 & global_with_exf
1644      - keep the old version of FREEZE for backward compatibility;
1645        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1646      - corresponding modifs for TAF directives
1647    o added surface flux output variables to TIMEAVE_STATVARS
1648    o time-averaged output for pkg/ptracers
1649    o fix problem with ECCO-related divided adjoint
1650      snapshot file was missing some ad-variables,
1651      but no warning issued by TAF
1652    
1653    checkpoint52a_pre
1654    o some bug fixes for #undef REAL4_IS_SLOW
1655    
1656    checkpoint52 = ecco_c52_e35
1657    o after testing adjoints of checkpoint51u_post
1658    
1659    checkpoint51u_post
1660    o this is the post-merge tag of the ecco-branch
1661      (needs another clean checkout and re-testing)
1662    o various natl_box_adjoint configs and results
1663      but no input fields
1664    o obcs adjoint not yet merged!
1665    o adding ECCO global 1x1 and 2x2 degree configs
1666    o updated/extended some store directives for seaice
1667    o pkg/ecco now containes ecco-specific part of cost function
1668    o top level routines the_main_loop, forward_step
1669      supersede those in model/src/
1670      previous input data.cost now in data.ecco
1671      (new namelist ecco_cost_nml)
1672    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1673    
1674    checkpoint51t_post
1675    o this is the pre-merge tag of the ecco-branch
1676    
1677    checkpoint51s_post
1678    o cleanup: removed various obsolete #define-s
1679    o pkg/grdchk
1680      - renamed 'ph-grd 3' to 'grad-res'
1681      - merged from ecco-branch
1682        (remaining bug fixes for obcs gradient checks)
1683      - additional high-precision output for testreport
1684        (grep for 'precision_grdchk_result')
1685    
1686    checkpoint51r_post
1687    o cleaned up or removed CPP_OPTIONS.h files
1688    o updated results for some of the tests to reflect the new
1689      optfiles (-ieee: -O0 instead of -O3)
1690    
1691    checkpoint51q_post
1692    o cd_code:
1693      - moved cd_scheme.F -> cd_code_scheme.F
1694      - separate read_checkpoint from cd_code_ini_vars.F
1695      - separated cd_code part from write_checkpoint
1696      - updated AD_SOURCE, generated .flow
1697      - added CD_CODE_VARS.h to the_main_loop
1698      - Moving cd_code specific store dir.s to pkg/cd_code
1699    o ctrl package totally restructured
1700      - pack/unpack now optional and decoupled from
1701        xx_/adxx_ I/O
1702      - ctrl_pack/unpack cleaned
1703        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1704      - confined inclusion of AD_CONFIG.h to where necessary.
1705    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1706    
1707    checkpoint51p_post
1708    o create initial cd_code package
1709      - WARNING: the initialization of fields within packages
1710        is broken because INI_FIELDS (where READ_CHECKPOINT is
1711        called) is called *before* PACKAGES_INIT_VARIABLES.
1712        This seems to be backwards since
1713        1) its important to initially zero the entire field including
1714           the "halo" region
1715        2) zeroing needs to be done *before* reading pickup info
1716           and the pickup call might or might not happen in any
1717           particular run
1718      - this needs an overhaul for R2
1719    o cleanup verification/*/code/GMREDI_OPTIONS.h
1720    o cleanup testreport
1721    
1722    checkpoint51o_post
1723    o bringing AD-related verif's up to date with genmake2
1724      - carbon/
1725      - global_ocean.90x40x15/
1726      - hs.94.1x64x5/
1727      - (front_relax/ )
1728    o (more) consistent directory structure for AD-related verif.'s
1729    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1730    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1731    o bug fix in find_alpha.F for MDJWF:
1732      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1733        change rho -> rho-rhoConst
1734      - replace call find_rho to find_rhonum
1735    o initialisation of rFlx extended to full array (required by TAF)
1736      and shifted to thermodynamics
1737    o removed PTRACERS.h in ptracers routine
1738    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1739    o Correcting initialisations for fVerU, fVerV.
1740    o helping TAF to recognize dependency on kUp for
1741      fVerU, fVerV
1742    o Replacing delZ by delR in pkg/ctrl/
1743    checkpoint51o_pre
1744    
1745    o undid all of cp51 pending some cleanups and discussion
1746    o added the [#include "AD_CONFIG.h"] statement to all files that need
1747       it for adjoint/tl #defines
1748     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1749     o removed tools/genmake since it no longer works
1750    
1751    checkpoint51n_post
1752    o modifications to make FREEZE flux visible to pkg/kpp
1753      - moved surfaceTendencyTice from pkg/seaice to main code
1754      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1755      - subroutine FREEZE now limits only surface temperature
1756        (this means new output.txt for global_ocean.90x40x15,
1757         global_ocean.cs32x15, and global_with_exf)
1758    o added surface flux output variables to TIMEAVE_STATVARS
1759    
1760    checkpoint51n_pre
1761    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1762    o added [#include "AD_CONFIG.h"] to all files that use the following
1763      defines:
1764      - ALLOW_ADJOINT_RUN
1765      - ALLOW_TANGENTLINEAR_RUN
1766      - ALLOW_ECCO_OPTIMIZATION
1767    
1768    checkpoint51m_post
1769    o incorporating changes to get TAMC/TAF working in genmake2
1770      - added new TAMC/TAF targets to the Makefile
1771      - various cleanups related to package handling
1772      - these changes should have no impact on the forward model
1773    
1774    checkpoint51l_post
1775    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1776     - faster algorithm for cal_addtime.F
1777     - higher precision arithmetic, where needed
1778     - pkg/exf *startdate variables changed from calendar date to
1779       model integration time
1780    
1781    checkpoint51l_pre
1782    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1783    o enable to apply restoring on S & T only in a latitude band.
1784    o update output (external_forcing_surf modif. change truncation errors)
1785       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1786    
1787    checkpoint51k_post
1788    o change default to: useNHMTerms=.FALSE.
1789     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1790       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1791     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1792        exp1, ideal_2D_oce
1793     - change data file of oceanic exp (leave the results unchanged for now)
1794       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1795    o set gravitySign automatically according to the vertical coordinate used
1796      (and change sign: back to "logical" value: +1 when R increases downward)
1797    o added an include barrier to the default CPP_OPTIONS.h and
1798      removed the #include "PACKAGES_CONFIG.h" from it
1799    o fix a bug in mom_fluxform (from chk51j_post)
1800    
1801    checkpoint51j_post
1802    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1803    o adjusted some flow directives (dynamics, thermodynamics)
1804    o added cubed-sphere case to test cost function
1805    o heckpoint_lev?_directives.h now include
1806      pkg-specific directives, whenever those are enabled.
1807    o Moving pkg-specific flow directives to corresponding pkg
1808      Moving pkg-specific differentiation list to corresponding pkg
1809      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1810      ---> conventions are
1811           - pkg_ad.flow
1812           - pkg_ad_diff.list
1813           - pkg_ad_check_lev?_dir.h
1814    
1815    checkpoint51i_post
1816    o merge of the branch-genmake2
1817      - knowingly breaks the older genmake
1818      - automatic generation of all ALLOW_${PKG_NAME} defines
1819      - new testreport supersedes older testscript
1820    o large number of package inclusion and header cleanups
1821    checkpoint51i_pre
1822    
1823    o new output for adjoin of global ocean vector invariant
1824    o fix for checkpoint of thermodynamic seaice and bulk_force
1825    o Steph gchem various cleanups
1826    
1827    checkpoint 51h_pre
1828    o fixed some single quotes
1829    o modify gchem pkg to be more versatile
1830    o modifications to clean up dic pkg
1831    o add pkg/cfc
1832    
1833    checkpoint51g_post
1834    o provide links for ARPACK and ADM*TLM
1835    o start removing verification/vero/
1836    o update AD-related stuff
1837      (in particular some IF-statements in model/src/ routines)
1838    o adding to verification/global_ocean.90x40x15/ adjoint of
1839      vector invariant setup
1840    
1841    checkpoint51f_post
1842    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1843    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1844      of tracer Green's fucntions for ocean inversion project.
1845    
1846    checkpoint51f_pre
1847    o Added on-the-fly spatial interpolation capability
1848        "USE_EXF_INTERPOLATION" to pkg/exf.
1849      - This is a temporary Cartesian-grid hack until
1850        the super-duper ESMF coupler becomes available.
1851      - See verification/global_with_exf/README for usage example.
1852      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1853        flags and modified pkg/seaice accordingly.
1854    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1855        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1856        non-local transport term.
1857    
1858    checkpoint51e_post
1859    o pkg/mom_vecinv:
1860      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1861      - add time-ave diagnostic of vorticity advection.
1862    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1863    o atmospheric geopotential: - include water vapor effect;
1864                                - use p^kappa in p* scaling.
1865    o land pkg: read initial state from files.
1866    o AIM : add stratospheric drag in the upper level
1867    
1868    checkpoint51d_post
1869    o change function ILNBLNK (=> last non-blank char.) to return zero
1870      (instead of the string length) when the string. char is empty
1871    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1872    o modif's to restore TAMC compatibility
1873      - avoid "_d" constructs in PARAMETER declarations
1874      - avoid interrupting lines by comment lines
1875    o Use cluster local disks for purely local I/O
1876      vs. globally visible disks needed for ctrl stuff
1877      (merged from ecco-branch)
1878      - new active_file_loc... and mdsio_..._loc routines
1879      - affected packages: autodiff, ctrl, grdchk, mdsio
1880    
1881    checkpoint51c_post
1882    o introducing integer flag debugLevel
1883      - debLevZero: suppress all output
1884      - debLevA: standard
1885      - debLevB: equivalent to current debugMode=.TRUE.
1886    o introducing pathname variable mdsioLocalDir for mdsio
1887      that can be specified at runtime
1888      (relevant for cluster I/O to local disk)
1889    `
1890    >>>checkpoint51b_post
1891    adjoint of ptracers
1892    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1893    o extended state in checkpoint_lev?, etc.
1894    o alternative ctrl/cost with tr1 or ptracer
1895    o new comlev1_bibj_ptracers
1896    o new ptracers.flow
1897    o made ptracers_forcing same as external_forcing_s
1898    o added verification for adjoint with ptracers
1899      - adm. grdchk fail so far
1900      - tlm. grdchk OK
1901      - checked tapelev/comlev recomputations: OK
1902    <<<checkpoint51b_pre
1903    
1904    checkpoint51a_post
1905    o added code for biogeochemistry package
1906      - new pkgs: dic, gchem
1907      - new subroutine in ptracers
1908    o modify code for biogeo packages
1909      - in model/src and pkg/ptracers
1910    
1911    checkpoint51
1912    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1913      - autodiff, ctrl, exf, grdchk, seaice
1914      kept separate packages
1915      - cost, ecco, obcs
1916    o updating verification/internal_wave, verification/lab_sea
1917      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1918    
1919    checkpoint50i_post
1920    o Preparing next differentiable checkpoint and sync
1921      of MAIN vs. ecco-branch
1922      - 1st step: this one is differentiable
1923      - 2nd step: next(! not this) checkpoint will have updated packages
1924                  from ecco-branch)
1925    
1926    checkpoint50h_post
1927    o new package "land": provide surface BC for AIM.
1928    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1929    o AIM: use true log-P extrapolation for near surface temp (= as in
1930        F.Molteni paper) ; update aim.5l_cs output.
1931    o New variable in PARM03 for more flexible pickups
1932    o somewhat cleaned package initialisation sequence for
1933      ctrl/ cost/ ecco/ in packages_... routines
1934    
1935    checkpoint50g_post
1936    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1937      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1938      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1939        made the default because of faster convergence than ADI
1940    
1941    checkpoint50f_post
1942    o exf totally restructured
1943      - replaced all exf_set_ routines by one generic exf_set_gen.F
1944        and made sure it's still differentiable
1945      - split exf_getffields.F into new exf_bulkformulae.F
1946      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1947      - updated adjoint/makefile and relevant verif. accordingly
1948    
1949    checkpoint50f_pre
1950     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1951          + change Evap over land. (update aim.5l_cs output)
1952     o added missing .cvsignores and made uniform across expts
1953     o changed configuration of tidal_basin_2d expt
1954     o added pkg/debug functions for tracing code in fatal crashes
1955     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1956     o new fn in pkg/monitor to stop model if solution grows too big
1957     o removed lots of single quotes from comments
1958    
1959    checkpoint50e_post
1960    o make KPP work with PTRACERS
1961     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1962       nearly a copy of kpp_transport_s
1963     - there is no analogue to SurfaceTendencyS, so I have to use
1964       gPtr(of the surface layer) instead
1965    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1966    checkpoint50e_pre
1967    
1968    checkpoint50d_post
1969    o change kpp output from multiple-record state files to single-record state
1970      files analogous to write_state.F
1971    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1972      analogous to the cg2d-related output.
1973    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1974      so that writing to internal file fn (with length 512) fails.
1975    checkpoint50d_pre
1976    
1977    checkpoint50c_post
1978    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1979    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1980    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1981    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1982    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1983    
1984    checkpoint50c_pre
1985    Merging from release1_p13:
1986    o bug fix for pkg/seaice dynamic solver
1987    o Added SEAICE_initialHEFF to pkg/seaice
1988    
1989    checkpoint50b_post
1990    o store u*,v* in gU,V instead of in guNm1,gvNm1
1991    o in order to put the momForcing out of the Adams-Bashforth:
1992      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1993      to timestep.F
1994    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1995    o re-generate output for highly sensitive test-exp:
1996       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1997    
1998    checkpoint50b_pre
1999    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2000    o corrected CPP option mismatch in exf_Bulk... functions for case
2001      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2002    
2003    checkpoint50a_post
2004    o Bug fix for merging between c50 and KPP.
2005      ikey was passed from thermodynamics to kpp_calc via
2006      common block rather than being recomputed in kpp_calc,
2007      in contradiction with new key itdkey.
2008      New key ikppkey created, and tamc.h headers updated.
2009    
2010    checkpoint50
2011    - 2nd step of merge with ecco-branch:
2012      merge changes in ecco-branch back into main trunk
2013    - bug fix in find_alpha
2014    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2015    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2016    - merged some sliced AD support routines
2017    
2018    checkpoint49
2019    merged from ecco-branch:
2020    o exf:
2021      - Enable initialisation of forcing fields to constant
2022        (runtime) values.
2023      - in exf_getffields.F
2024        Reduce i-/j-loop to interior domain, discarding overlaps.
2025        That also fixes wrong TAF-key computations for key_1, key_2
2026        with bulf formulae.
2027      - exf_init.F modify #ifdef for exf_init_evap
2028      - exf_getffieldrec.F, ctrl_getrec.F
2029        The following INT-usages are not safe:
2030          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2031          fldcount = int(fldsecs/fldperiod) + 1
2032        and were modified.
2033    o autodiff: checkpoint_lev...
2034      - updated storing for bulk formulae (some arrays were missing)
2035      - added state for seaice package
2036      - synchronized with main branch
2037    o DIVA:
2038      Modif.s in
2039      - the_main_loop.F
2040      - the_model_main.F
2041      and added cost_final_restore.F cost_final_store.F
2042      o With these changes, it is possible to fully separate
2043        the first forward run to compute the cost function (mdthe_main_loop)
2044        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2045        into separate model executions.
2046        This enables better tuning of DIVA to given queue sizes.
2047      o Loss of cost function value in consecutive DIVA runs is
2048        fixed by storing to 'costfinal' file.
2049      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2050        beginning/end of adjoint integration is accounted for.
2051      The current changes apply to TAF-1.4.26.
2052      TAF has one remaining bug, requiring one manual change
2053      (see MITgcm manual).
2054    o cal: synchronized between MAIN and ecco-branch
2055    
2056    checkpoint48i_post
2057    o Changes to restore differentiability of code w.r.t. previous tag
2058      (mostly adding new routines to make list and replacing
2059      pressure by totPhiHyd).
2060    o Updated and merged grdchk package
2061      - has both ADM and TLM checks
2062      - works for single- and multi-proc.
2063      - output cleaned
2064      - worked successfully for parallel DIVA
2065    o genmake:
2066      - Adding -platform=SP4
2067      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2068    o Modif. for DIVA:
2069      ctrl_unpack should not be called in intermediate DIVA interval.
2070      (similar thing would apply for active files such as
2071      tbar, sbar, psbar, which should not be reinitialised;
2072      only relevant for ecco-branch)
2073    
2074    checkpoint48h_post
2075    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2076    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2077    o Added SEAICE_initialHEFF to pkg/seaice
2078    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2079    
2080    checkpoint48g_post
2081    --- EOS:
2082    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2083      store total Potential in totPhyHyd for diagnostics & EOS.
2084    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2085    --- Pressure/geopotential gradient:
2086    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2087    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2088      ( changes results of global_ocean_pressure )
2089    o NLFS + z-coord.: add eta*Rho' contribution.
2090    o accurate phiHyd when using interface-W at the middle between 2 centers
2091     ( changes results of ideal_2D_oce )
2092    o includes r* 2nd term in potential gradient.
2093    
2094    checkpoint48f_post
2095    Merging from release1_p12:
2096    o Modifications for using pkg/exf with pkg/seaice
2097      - improved description of the various forcing configurations
2098      - added basic radiation bulk formulae to pkg/exf
2099      - units/sign fix for evap computation in exf_getffields.F
2100      - updated verification/global_with_exf/results/output.txt
2101    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2102      (SBO) core products, including oceanic mass, center-of-mass,
2103      angular, and bottom pressure (see pkg/sbo/README.sbo).
2104    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2105      to avoid negative values in shallow regions.
2106      - updated verification/natl_box/results/output.txt
2107      - updated verification/lab_sea/results/output.txt
2108    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2109    o Added useSingleCpuIO option (see PARAMS.h).
2110    o Updated useSingleCpuIO option in mdsio_writefield.F to
2111      work with multi-field files, e.g., for single-file pickup.
2112    o pkg/seaice:
2113      - bug fix in growth.F: QNET for no shortwave case
2114      - added HeffFile for specifying initial sea-ice thickness
2115      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2116    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2117      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2118    o pkg/seaice:
2119      - adjoint-friendly modifications
2120      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2121    
2122    checkpoint48e_post
2123    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2124    o dynamics: change definition of computational domain & adapt mom_fluxform
2125      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2126    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2127        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2128        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2129        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2130        inverted_barometer solid-body.cs-32x32x1
2131      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2132    
2133    checkpoint48d_post
2134    o in preparation for r*:
2135     a) use pre-computed gradient of hydrostatic potential:
2136        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2137     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2138        => affects results of glob_oce_pressure (different truncation error)  
2139      update output.txt of ideal_2D_oce & global_ocean_pressure
2140    
2141    checkpoint48d_pre
2142    o in preparation for r*:
2143      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2144      pass the 2 comp. of the grad. as arguments to momentum S/R.
2145      but for the moment, only used if it does not change the results.
2146    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2147    
2148    checkpoint48c_post
2149    Modifications in treatment of initial flux forcing controls
2150    to avoid extra storing of flux fields.
2151    
2152    checkpoint48c_pre
2153    o Added tidal_basin_2d experiment (currently 1D!)
2154    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2155    
2156    checkpoint48b_post
2157    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2158     (modification to pressure gradient not yet implemented)
2159    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2160      (for U & V) that are used for vertical advection of momentum.
2161    
2162    checkpoint48a_post
2163    o In preparation for r*, use temp. array to compute vertical transport
2164       in flux-form momentum pkg. => change results of few test-exp.
2165      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2166                        lab_sea, natl_box & plume_on_slope
2167    
2168    checkpoint48
2169    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2170    
2171    checkpoint47j_post
2172    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2173    o moved adexch from forward_step to addummy_in_stepping
2174    o added exch in ctrl_map_...
2175    o aveFreq.=0. at end of cost_final to avoid overwrite in
2176      reverse checkpointing loop
2177    o Yet more changes in gmredi:
2178      * adgmredi_calc_tensor
2179        avoiding all recomputation of gmredi_slope_limit
2180      * adgmredi_x/y/rtransport
2181        added flag for excessive storing to avoid recomp. of
2182        u/v/rtans, dTdx/y/z
2183        -> this is not really necessary and very memory-consuming
2184      * adgmredi_slope_psi:
2185        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2186      * gmredi_slope_limit
2187        re-activated full calculation of taperfct for case 'ac02'
2188    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2189    
2190    checkpoint47i_post
2191    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2192    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2193      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2194    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2195    o gmredi: fix few bugs.
2196    
2197    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2198    This will be a good checkpoint to plug into the ecco-branch.
2199    o few modif.'s to get latest version adjointed
2200      (mainly kick out code in ini_linear_phisurf)
2201    o modif's to run adjoint with exactConserv
2202    o case GM_BOLUS_ADVEC should be cleaned
2203      S/R gmredi_slope_psi should be cleaned
2204    o verification/carbon now has exactConserv=.TRUE.
2205    
2206    checkpoint47g_post
2207    o time-average AIM output: becomes independent from statvars time-average
2208      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2209    o After TAF bug fix:
2210      Tested adjoint of gmredi package.
2211      Tests were done with checkpoint47 rather than with latest
2212      checkpoint47f_post since the latter is broken for the adjoint
2213      verification/carbon/ contains both ADM and TLM gradient checks.
2214    Here they are, before they get changed/lost/stolen.
2215    Mostly modif.'s to fix numerical sensitivities.
2216    Gradient checks OK for
2217    - GM_taper_scheme:
2218      * clipping
2219      * ac02
2220      * linear
2221      * glw91
2222      * dm95
2223      * ldd97
2224    - GMREDI_OPTIONS:
2225      * GM_VISBECK_VARIABLE_K
2226      * GM_NON_UNITY_DIAGONAL
2227      * GM_EXTRA_DIAGONAL
2228      * GM_BOLUS_ADVEC
2229    in conjunction with data.gmredi parameters to be checked in
2230    in a few minutes under verification/carbon/code/
2231    
2232    checkpoint47f_post
2233    Merging from release1_p10:
2234    o modifications for using pkg/exf with pkg/seaice
2235      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2236        and SEAICE_EXTERNAL_FLUXES
2237      - pkg/exf CPP options EXF_READ_EVAP and
2238        EXF_NO_BULK_COMPUTATIONS
2239      - usage examples are Experiments 8 and 9 in
2240        verification/lab_sea/README
2241      - verification/lab_sea default experiment now uses
2242        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2243    
2244    checkpoint47e_post
2245    o created a tag prior to creating a branch
2246    
2247    checkpoint47d_post
2248    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2249      at the bottom boundary had an erroneous half slip boundary condition
2250    o added bottom drag and no slip boundary condition capabilities to
2251      oceanic pressure coordinates code
2252    o added new verification experiment global_ocean_pressure, this experiment is
2253      also described in the tutorial section of the manual
2254    checkpoint47d_pre
2255    
2256    checkpoint47c_post
2257    o Added a verification experiment for a global cubed-sphere ocean run
2258      -  verification/global_ocean.cubed32x32x30
2259      -  uses pkg/therm_seaice and pkg/bulk_forcing
2260    
2261    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2262    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2263      when using P-coordinate; only implemented for atmospheric config.
2264    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2265      NOTES: requires option NONLIN_FRSURF to be "#define".
2266    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2267    
2268    checkpoint47b_post
2269    Merging from release1_p9:
2270    o pkg/seaice
2271      - removed GOTO's and added taf directives
2272      - double precision constants to reduce the g77 (Linux)
2273        to F77 (SGI) differences reported in release1_p8
2274    o tools/genmake
2275      - added SGI options
2276    o verification/testscript
2277      - updated to that of checkpoint47a_post
2278    o verification/global_ocean.90x40x15/input/eedata
2279      - modified for SGI f77 compatibility
2280    o verification/lab_sea
2281      - added description of sea-ice model
2282      - added missing matlab routines
2283      - added test of thermodynamics parallelization
2284    
2285    checkpoint47a_post
2286    o new pkg: aim_v23
2287     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2288       for now, keep the same surface forcing as before.
2289     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2290     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2291     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2292    o add diagnostic of surface correction term in monitor output
2293    
2294    o bulk_force and therm_seaice
2295    - Two packages:  bulk_force (Bulk forcing)
2296      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2297    - Earlier integration from Stephaine Dutkiewicz
2298      and Patrick Heimbach.
2299    - Two ifdef statements for compile time,
2300       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2301    
2302    checkpoint47
2303    differentiable version of checkpoint46n_post
2304    o bug fix in quasihydrostaticterms
2305    o * "clean" adjoint code (in terms of extensive recomputations)
2306        can now be obtained for all GMREDI options (i.e. for
2307        - GM_VISBECK_VARIABLE_K
2308        - GM_NON_UNITY_DIAGONAL
2309        - GM_EXTRA_DIAGONAL
2310        - GM_BOLUS_ADVEC )
2311      * However, wrong gradient check problem remains unsolved.
2312      * New CPP options have been introduced for different
2313        tapering schemes
2314    o external_fields_load now part of differentiation list
2315    o pressure needs multiple storing;
2316      would be nice to have store_pressure at beginning or
2317      end of forward_step, e.g. by having phiHyd global (5-dim.)
2318      (NB: pressure is needed for certain cases in find_rho,
2319      which is also invoked through convective_adjustment).
2320    o recomputations in find_rho for cases
2321     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2322    o #define ATMOSPHERIC_LOADING should be differentiable
2323    o ini_forcing shifted to begining of initialise_varia
2324    o Incorporating QNVS line search routines into MITgcm
2325      (this is separate code, and therefore not under pkg)
2326      lsopt/, optim/
2327    o Updated verification/carbon/
2328      - #define GM_VISBECK_VARIABLE_K
2329      - GM_taper_scheme    = 'ldd97'    
2330    
2331    checkpoint46n_post
2332    Merging from release1_p8:
2333    o verification/natl_box:
2334      updating new external_fields_load routine
2335    o New package: pkg/seaice
2336      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2337      The sea-ice code is based on Hibler (1979-1980).
2338      Two sea-ice dynamic solvers, ADI and LSR, are included.
2339      In addition to computing prognostic sea-ice variables and diagnosing
2340      the forcing/external data fields that drive the ocean model,
2341      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2342      The implied surface heat flux is then stored in variable
2343      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2344      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2345      non-local transport term.  Because this call precedes model
2346      thermodynamics, temperature under sea-ice may not be "exactly" at
2347      the freezing point by the time theta is dumped or time-averaged.
2348      N.B.: fairly large differences in accuracy occur across
2349            different platforms/compilers; comparison between
2350            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2351            generated output gives:
2352       T           S           U           V
2353      C D M    c        m  s        m  s        m  s        m  s
2354      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2355      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2356      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2357    
2358      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2359    o GAD:
2360      - generated new common blocks to account for call of
2361        same gad routines with differing traceridentities
2362        (needed to modify tracerIdentity indices in GAD.h)
2363      - generated separate common blocks for case useCubedSphereExchange
2364        (Department of Futurology)
2365      - parameter lists to gmredi_?transport: added tracerIdentity
2366      - added new key indices to tamc.h
2367    o external_fields_load:
2368      - added this routine to TAF list
2369      - needed to make some common blocks global and additional storing
2370        along the same lines as exf package (checkpoint_lev?_directives.h)
2371    o exf:
2372      updated external forcing package
2373      - bug fixes carried over from ecco-branch
2374        (missing OBCS_OPTIONS.h in two routines)
2375      - enable easy to use "no forcing".
2376      - added exf I/O for atmospheric loading
2377      - added exf I/O for runoff data
2378      - transfered scaling between exf <-> MITgcm to exf namelist
2379    o Adding new verification experiment global_with_exf.
2380      This verification experiment is almost identical to the
2381      global_ocean.90x40x15 experiment, except that it uses
2382      the exf (and cal) package instead of the
2383      external_fields_load routine (cf README file).
2384    
2385    checkpoint46m_post
2386    o modified testscript to return -- when there are no lines of "%MON" output
2387    o added new flag "quasiHydrostatic" for QH mode
2388      and new routine quasihydrostaticterms()
2389    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2390      New routine: mom_u_coriolis_nh()
2391    o fixed sign of non-hydrostatic metric terms in u and v equations.
2392      Depend on correct sign of gravitySign.
2393    o added work.pc* to .cvsignore in aim directories using ifc
2394    o introduced flag for controllin non-hydrostatic metric terms
2395    o removed gravitySign from PARM04
2396    o switched to g77/ifc from pgf77 in aim experiments
2397    
2398    checkpoint46l_post
2399    o made convective adjustment work with pressure coordinates:
2400     - changed the direction of k-loop in convective_adjustment.F for the
2401       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2402     - adjusted the reference pressure k-index in convective_adjustment.F
2403     - adjusted the convection condition in convect.F (in analogy to
2404       calc_ivdc.F)
2405     - convective_adjustment no longer computes anything on the halos
2406     - removed the warnings about negative salinity from find_rho.F and
2407       find_alpha.F; instead the new routine look_for_neg_salinity, called
2408       at the beginning of find_rho, find_alpha, and find_beta, does a
2409       check of the entire slice, if CPP-option
2410       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2411    checkpoint46l_pre
2412    
2413    checkpoint46k_post
2414    o fixed the verification/global_ocean.90x40x15 experiment:
2415     - new bathymetry (the world according to A., JMC, and M.)
2416     - new initial fields and forcing fields (*.bin files)
2417     - new POLY3.COEFFS (for the next release one should switch to a full
2418       equation of state: JMD95P or MDJWF)
2419     - fixed several errors and redundancies in the data file
2420     - experiment uses looped cells
2421     - added matlab directory with diagnostic scripts for plotting of output
2422    
2423    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2424     - read AIM physics parameters from a file (data.aimphys)
2425     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2426    
2427    checkpoint46j_post
2428    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2429    o move wVel computation at the end of the time step, in S/R integr_continuity
2430    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2431    o update timeave pkg for wVel diagnostic.
2432    checkpoint46j_pre
2433    
2434    checkpoint46i_post
2435    o Clean up AIM package (and keep the results unchanged):
2436      include CPP_OPTION and use IMPLICT NONE in all routines ;
2437      declare all the variables _RL ; use _d 0 for all numerical constants.
2438      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2439    
2440    checkpoint46h_post
2441    o cleaned up the use of rhoNil and rhoConst.
2442      - rhoNil should only appear in the LINEAR equation of state, everywhere
2443        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2444        and the dynamical equations are all divided by rhoConst
2445    o introduced new parameter rhoConstFresh, a reference density of fresh
2446      water, to remove the fresh water flux's dependence on rhoNil. The default
2447      value is 999.8 kg/m^3
2448    o cleanup up external_forcing.F and external_forcing_surf.F
2449      - can now be used by both OCEANIC and OCEANICP
2450    checkpoint46h_pre
2451    
2452     Added code to convert surface volume flux (fresh water) into
2453     a mass flux when using P coordinates in the ocean (OCEANICP).
2454     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2455    
2456    checkpoint46g_post
2457    o Include a new diagnostic variable phiHydLow for the ocean model
2458      - in z-coordinates, it is the bottom pressure anomaly
2459      - in p-coordinates, it is the sea surface elevation
2460      - in both cases, these variable have global drift, reflecting the mass
2461        drift in z-coordinates and the volume drift in p-coordinates
2462      - included time averaging for phiHydLow, be aware of the drift!
2463    o depth-dependent computation of Bo_surf for pressure coordinates
2464      in the ocean (buoyancyRelation='OCEANICP')
2465      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2466        Theta, Salinity, and Pressure in the parameter list. This routine is
2467        presently contained in find_rho.F. This routine does not give the
2468        correct density for 'POLY3', which would be a z-dependent reference
2469        density.
2470    o cleaned up find_rho
2471      - removed obsolete 'eqn' from the parameter list.
2472    o added two new verification experiments: gop and goz
2473      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2474    checkpoint46g_pre
2475    
2476    checkpoint46f_post
2477    o Enable tangent linear (forward mode) gradient checks:
2478      - extended active file handling to g_... files
2479      - added TANGENT_SIMULATION to theSimulationMode
2480      - extended grdchk package accordingly
2481    o added tangent linear setup in verification/carbon/code_ftl
2482    o added adjoint setup in verification/front_relax/code_ad
2483    
2484    checkpoint46e_post
2485    o Added new equation of state -> MDJWF
2486      - EOS of McDougall et al., 2002, JAOT, submitted
2487      - caveat: the equation of state is only valid for a smaller (more
2488        realistic?) range of values than JMD95P/Z and UNESCO
2489      - added masks to the calculation of pressure in store_pressure
2490      - added more check values for density in check_eos (ini_eos.F), some of
2491        the old check values are out of the range of the MDJWF-eos, so don't
2492        expect perfect matches for those
2493    checkpoint46e_pre
2494    
2495    checkpoint46d_post
2496    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2497      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2498      case of pressure coordinates. eosType='JMD95Z' in
2499      combination with buoyancyRelation='OCEANICP' now causes an error.
2500    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2501      in find_alpha/beta.
2502    checkpoint46d_pre
2503    
2504    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2505      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2506    
2507    checkpoint46c_post
2508    o Changes necessary for ocean in p-coordinates
2509     -  Added new buoyancy relation = 'OCEANICP'
2510     -  Added new parameters = gravitySign (this used to be contained inside
2511        the factor dRdZ which I added when we first switched to R coordinates).
2512     X GM/Redi is not compatible (yet)
2513     X bottom drag and no-slip need to be debugged.
2514    checkpoint46c_pre
2515    
2516    checkpoint46b_post
2517    o Added new equation of state -> JMD95Z and JMD95P
2518      - EOS of Jackett and McDougall, 1995, JAOT
2519      - moved all EOS parameters into EOS.h
2520      - new routines ini_eos.F, store_pressure.F
2521    o Added UNESCO EOS, but not recommended because it requires
2522      in-situ temperature (see JMD95)
2523    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2524      unesco.f to be used with POLY3
2525    checkpoint46b_pre
2526    
2527    checkpoint46a_post
2528    o Added (atmospheric) pressure loading
2529      - new field in FFIELDS.h, etc...
2530      - new cpp flag ATMOSPHERIC_LOADING
2531    o Changed hFacC to _hFacC in calc_phi_hyd.F
2532    o Added SHORTWAVE_HEATING to some files for consistency
2533    checkpoint46a_pre
2534    
2535    checkpoint46
2536    further merges from release1_p5
2537    o new ctrl package
2538      - adopted from ECCO environment to enable optimization
2539      - added Eliassen Palm fluxes to controls
2540    o added Eliassen Palm flux controls to gradient check package
2541    o cost package
2542      - Compatible with new ctrl package
2543      - added Eliassen Palm cost hooks
2544      - modif's of existing cost functions
2545    o Adjoint-related bug fixes in kpp:
2546      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2547      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2548    o autodiff package
2549      - flow directives:
2550        + new for S/R do_the_model_io
2551        + enhanced for S/R checkpoint
2552        + new gmredi.flow
2553      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2554        disable adcommon.h/g_common.h by default.
2555      - fixed problem for adjoint of global_max
2556    o modified verification/carbon/
2557    o New setup for adjoint of global_ocean
2558    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2559    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2560    o incorporated hooks for sponge layer code (external_forcing.F)
2561    
2562    checkpoint45d_post
2563    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2564    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2565      (affects plume_on_slope "cg2d" output)
2566    o add new parameter deltaTfreesurf for free-surface time stepping
2567    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2568    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2569    o change phiMin in exp1 (to agree with documentation)
2570    o add new flags:
2571     - T,S forcing inside/outside Adams-Bashforth
2572     - turn off temp,salt advection and/or forcing
2573     - for each tracer, define internal flag for multiDimAdvection & A-B
2574    o monitor: change definition of KE to check conservation of Energy
2575    
2576    checkpoint45c_post
2577    o Removed f90 comments ("!")
2578    o Modified initialisations to enable exf package for MITgcm
2579      (without invoking ECCO_PACKAGE).
2580    o modifications to gradient check package (Martin Losch)
2581      - enable centered differences
2582      - modified format of standard output
2583    
2584    checkpoint45b_post
2585    o cleaned exchange calls in cg2d
2586    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2587    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2588      to configure barotropic setup (Martin Losch)
2589    o moved some initialisations within bi,bj loop in dynamics
2590      (TAF flow dependency)
2591    o in initialise_varia, moved call packages_init_variables
2592      before convective_adjustment_init
2593      (corresponding adjustment of TAF tape initialisation).
2594    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2595    
2596    checkpoint45a_post
2597    o compute Rho over the whole domain (extend iMin,jMin indices)
2598    o specific exchange for X-slice domain (case Ny=1)
2599    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2600    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2601    
2602    checkpoint44h_post = checkpoint45
2603    o Fix to restore differentiability:
2604      place at which packages_init_variables is called in
2605      initialise_varia is crucial for reverse control flow.
2606    o modifications in GMRedi to enable stable adjoint
2607      (corresponding modif's in thermodynamics, dynamics)
2608    o added missing hook for sponge layer code in external_forcing
2609    o modified test cost functions
2610    o storing in gad_advection (plus removal of write(0,*)!
2611    o missing headers TR1.h added in convective_adjustment routines
2612    o errorMessageUnit set non-equal zero in eeboot
2613      (conflict on some platforms, e.g. IBM SP3)
2614    o modified carbon verif.
2615    
2616    checkpoint44h_pre
2617    o vertical grid option: allow to put the Interface at the middle between
2618      2 cell-centers ; replace delZ in pkg/kpp by drF.
2619    o GM Advective form: Tracers are advected using the residual transport (=
2620      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2621    
2622    checkpoint44g_post
2623    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2624      results) ; ifdef missing in thermodynamics.F
2625    
2626    checkpoint44f_pre,checkpoint44f_post
2627    o added PTRACERS package
2628      This allows an arbitrary number of passive tracers to be integrated
2629      forward simultaneously with the dynamicaly model.
2630      + Implemented so far:
2631        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2632        - I/O and checkpointing
2633        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2634      + Not implemented so far:
2635        - KPP
2636        - OBCS
2637      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2638        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2639        line in data.pkg.
2640      + This package is disabled by default since it increases storage.
2641    
2642    
2643    o testscript: added -cleanup option
2644    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2645                 b) enable to filter 2D fields.
2646    
2647    checkpoint44e_pre,post
2648    o re-wrote convective adjustment to use pre-calculated weights
2649      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2650      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2651      Original calls to convect() still in place.
2652    
2653    chkpt44d_pre,post
2654    o added missing EXCLUDE_MONITOR flags
2655    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2656      (incompatible typ in MIN/MAX expressions caused problems
2657      on IBM SP3)
2658    o in genmake added variable MAKEDEPEND
2659      plus resetting for case SunOS
2660    o added timer_stats.c routine for IBM SP3
2661    o removed variables in dynamics
2662    !!! I forgot to create tag chkpt44d_pre !!!
2663    !!! But chkpt44d_pre = chkpt44c_post    !!!
2664    
2665    o real fresh water flux implemented with non-linear free-surface.
2666    
2667    chkpt44c_pre,post
2668    o few fix (mask in shap_s2, EmPmR in external_field_load,
2669      USE_NATURAL_BCS in solve_for_P);
2670    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2671    
2672    checkpoint44b_pre/_post
2673    o merge of relevant stuff from the ecco-branch:
2674      - genmake: removed $S64 overwrite for case SunOS
2675      - pkg/exf: update and corrections for field swapping and obcs
2676      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2677                  harmonized between ECCO and MITgcm
2678      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2679                      updated checkpointing_lev... lists for obcs
2680      - model/src: minor changes in forward_step, plot_field
2681                   added directive for divided adjoint in the_main_loop
2682      - pkg/mdsio: added mdsio_gl_slice
2683    
2684    o check parameters & config (chkpt44a_pre,post)
2685    o OBC and NonLin_FrSurf.
2686    
2687    checkpoint44
2688    o fix bug in mom_vi_del2uv
2689    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2690    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2691    o update AIM experiments (NCEP input files)
2692    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2693    o added some stuff for AD
2694    
2695    checkpoint43
2696    o added two new advection tests
2697    o added global 4x4 degree ocean test
2698    o added test of H&S94 with free surface on cube
2699    o some final mods for gradient check, adjoint,...
2700    
2701    checkpoint42
2702      Fixed AD-related problems:
2703    o Store directives up-to-date with re-arranged Adams-Bashforth
2704      (mainly thermodynamics.F)
2705    o New store directives for multi-dim. advection schemes
2706      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2707      * new common block and key passkey
2708      (mainly gad_advection.F)
2709    o Modified store directives for split of dynamics/thermodynamics
2710      for the case ALLOW_KPP
2711    o Cleaned argument list for timestep_tracer.F
2712    
2713    checkpoint41
2714    o re-formatted/added comments in prologues of key subroutines
2715      to work with protex
2716    
2717    checkpoint40
2718    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2719    o added FLT (floats) package from Arne along with demo. experiment
2720    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2721      implementation of forward-in-time forcing terms
2722    o more mods for non-linear free-surface including new variable
2723    o modified multi-dim method to work on cube
2724    o bug fix in KPP (from DM)
2725    
2726    checkpoint40pre9
2727    o added DST advection schemes
2728    o fix MPI bug on SGI's
2729    o modifications for non-linear free-surface
2730    o fixed conditionals for fixed flow/passive tracer only mode
2731    o added tension/strain form of stress tensor
2732    o changes to commenting of arguments for TAF/TAMC
2733    o added/updated many matlab scripts
2734    o added multi-dimensional advection method for tracers
2735      
2736    checkpoint40pre8
2737    o new package rw/
2738      Added method for dumping intermediate local arrays:
2739      mdsio_writetile - same as mdsio_writefield except works from inside
2740                        bi,bj loop
2741      mdsio_writelocal - same as mdsio_writetile except works for local
2742                         arrays
2743      write_local_r? - higher-level wrapper for mdsio_writelocal
2744      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2745      Example given at end of mom_vecinv.F that dumps some local arrays.
2746    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2747      control flux-form versus vector invariant code.
2748      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2749      or genmake -DISABLE ...
2750    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2751      (additional storing is now needed for case vecinv;
2752      currently nothing implemented to switch this storing off
2753      in case fluxform is used since no CPP flag available).
2754    
2755    checkpoint40pre7
2756    o bug fix in dynamics.F
2757      calc_viscosity called before k=1,Nr loop.
2758    o added some #ifdef's ALLOW_PASSIVE_TRACER
2759    o cleaned initialisations in ctrl_map_ini
2760      related to TAF
2761    
2762    checkpoint40pre6
2763    o split dynamics into thermodynamics & dynamics
2764    o corresponding split of calc_diffusivity into
2765      calc_diffusivity, calc_viscosity
2766      (kpp_calc_diff, kpp_calc_visc).
2767    o Added diffkr, kapgm to control variables
2768    o bug fix in gmredi_slope_limit for ldd97
2769    
2770    checkpoint40pre5
2771    o proper initialization of Adams-Bashforth time stepping
2772      + uses forward step for very first step of model (iter=0)
2773    o re-generated *all* output since almost all output is modified by this
2774      change (sorry but we've been putting this one off for about 2 years)
2775      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2776        *not* regenerated since they are already out of date and I don't
2777        want to create the impression that they are suddenly working.
2778    o removed KAP stuff for DEC's
2779    o modified/added many .cvsignore files in */code and */input
2780    o added new expt "solid-body.cs-32x32x1"
2781      + this uses an alternative form of ini_curvilinear_grid.F which
2782        is not necessarily any better than the current one...
2783    
2784    checkpoint40pre4
2785    o added re-initialisations of utrans,vtrans,rtrans in
2786      calc_common_factors which are crucial for TAF.
2787    o extended iMin,jMin range for calc_common_factors,
2788      calc_diffusivity
2789    o added option ALLOW_PASSIVE_TRACER
2790    o a few minor updates and fixes
2791    
2792    checkpoint40pre3
2793    o created calc_gtr1.F for gad package
2794    o split the_main_loop and re-introduced forward_step
2795    o some recomputations of nIter0 for TAMC
2796    
2797    checkpoint40pre2
2798    o Updated to latest branch of AJA, JMC
2799    o Added gradient check package
2800    o Added routines for passive tracer handling
2801    o Added carbon sequestration sensitivity experiment
2802    
2803    checkpoint39
2804     o Modifications and fixes to support TAMC
2805       (mainly missing or wrong directives)
2806     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2807       in addummy_in_stepping
2808     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2809     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2810     o Included following packages:
2811       cal: calendar
2812       exf: external forcing
2813       ecco: essential routines to control use of cal, exf
2814             (NB: this is not the full ECCO environment)
2815     o disabled some packages by default in genmake
2816    
2817    checkpoint38
2818     o see notes_c37_adj.txt
2819     o corrected wrong layer index in external_forcing_t
2820     o replaced the_main_loop/forward_step by the_main_loop
2821     o removed forceoutput from write_state
2822       (replaced criteria for initial/final state)
2823     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2824    
2825    checkpoint37
2826     o mdsio.F routine split and packaged in pkg/mdsio
2827       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2828        used unless genmake -disable=mdsio)
2829     o allow a more precise surface-geopotential gradient for the atmosphere
2830       taking into account the change in space of Alpha (=1/rho) at the surface.
2831     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2832       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2833     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2834       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2835       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2836     o Time-Average diagnostics defined as a pseudo package "timeave".
2837     o pickup files : old pickup (before c35) did not work with new code (c35
2838       and after) unless activating 2 commented lines in initialise-varia.
2839     o Non-Hydrostatic pickup file Pb fixed.
2840     o bug with Rigid-lid version (since c35) fixed.  
2841    
2842    checkpoint36
2843     o implement Crank-Nickelson barotropic time-stepping
2844     o recover Time-Average diagnostics
2845     o fix Pb in checkpoint (PR#19)
2846     o AIM become a standard package ; clean unused CPP_kees
2847    
2848    checkpoint35
2849     o subtantial rewrite of dynamics.f
2850     o allows staggered time-stepping
2851     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2852     o added bottom drag (linear + quadratic)
2853    
2854    checkpoint34
2855     o Modified exchange routines for correct reverse simulation.
2856     o Added verification output to comply with bug fix in impldiff.F
2857       as of c33 (exp2, natl_box).
2858     o Corrected store directives in dynamics.F
2859     o Corrected array boundaries in impldiff.F
2860     o Corrected array dimensions in gmredi.
2861       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2862     o Added routine GLOBAL_SUM_INT to global_sum.F
2863     o Added mdsio_gl.F for ECCO purposes.
2864    
2865  checkpoint33  checkpoint33
2866   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
2867   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h

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